Wireless communication device and method of subcarrier dedication

FIELD: information technology.

SUBSTANCE: in the device, data selection is used to schedule according to data type, at that for transmission it is determined whether to transmit Channel Quality Indicators (CQI) for each of all subcarrier blocks in communication frequency band or to transmit CQI indicating receive quality averaged by all subcarrier blocks in communication frequency band on the basis of control information included in the received signal, and CQI for each of all subcarrier blocks in communication frequency band or CQI indicating channel quality averaged by all subcarrier blocks in communication frequency band on the basis of determination.

EFFECT: higher transmission efficiency, achieving low power consumption and high speed of signal processing.

2 cl, 22 dwg

 

The technical field to which the invention relates

The present invention relates to wireless communication and method of allocating subcarriers in particular to wireless communication and method of allocation of subcarriers where data are allocated to the subcarriers together using, for example, OMCR (OFDM).

The level of technology

In this field of technology transfer in multiple weight-bearing, such as OFDM and MC-CDMA, etc. was tested as beyond the system of the 3rd generation, considered as satisfying the requirements of high-speed packet transmission. You can increase the efficiency of use of frequencies in the transmission on multiple bearing by performing adaptive modulation and scheduling each subcarrier and by separating the data transmitted from each mobile station, subcarriers higher reception quality in the communication range using frequency planning. On the device the base station to perform frequency planning by allocating data to be transmitted to each mobile station, the subcarriers of the highest quality reception, the mobile station informs the base station device CQI (quality indicator channel), containing the information quality of an individual channel for each subcarrier for all subcarriers. Then the device is a base station and determines subcarriers, modulation scheme and the encoding speed to be used for each mobile station according to a predetermined scheduling algorithm considering CQI. Technology is disclosed, for example, in Japanese laid patent publication No. 2002-252619, where frequency scheduling is performed using all CQI subcarrier from all users in the case when the base station transmits simultaneously on the set of mobile stations.

In particular, based on the CQI, the base station device allocates a large number of subcarriers to each user properly multiplexing (frequency division), and selects the MCS (modulation scheme and coding) for each subcarrier. In particular, based on the channel quality to the base station device satisfies the required communication quality (for example, the lowest rate, the lowest frequency error) for each user, allocates subcarriers to maximize the efficiency of use of frequencies and selects the high-speed MCS for each subcarrier. It provides high throughput for a large number of users.

To select the MCS uses a pre-generated table of MCS. In the MCS selection table shows the correspondence between the reception quality, such as CIR (ratio of carrier/interference) and so the., and frequency errors, such as PER (frequency packet error) or BER (bit frequency error) and so on, for each MCS. When selecting MCS, choose MCS able to meet the required frequency error on the basis of the measured reception quality.

Figure 1 shows a diagram showing the relation between the frequency and time allocation of each element of the data block of subcarriers to the base station device. According to figure 1, the base station device allocates all data blocks subcarriers #10-#14 using planning.

However, in the case plan and adaptive modulation for each block of subcarriers, the communication terminal device should inform the base station device CQI of each subcarrier. This means that the amount of control information transmitted from the communication terminal device to the base station device, is very great, in consequence of which the transmission rate decreases. In addition, the device of the communication terminal needs to perform the processing for measuring the reception quality and the generation of the CQI, the base station device needs to perform processing for scheduling and adaptive modulation and similarly, for each subcarrier using the received CQI. This means that the amount of signal processing performed on the device base station and the communication terminal device, is extremely great, clostridial achieve low power and high speed signal processing.

Disclosure of invention

Thus, the present invention is the provision of wireless communication devices and method of allocating subcarriers to improve transfer efficiency, achieve low power consumption and high speed signal processing due to the selection of data for planning in accordance with the data type.

According to the aspect of the present invention, the wireless communication device contains a block allocation of subcarriers, allocating the first data satisfying predetermined conditions of subcarriers selected by planning, based on the information of reception quality, which indicates the reception quality of each user, and information required transmission rate specifies the baud rate of each user, and allocating the second data different from the first data, the assigned subcarriers, and a transmission unit that transmits the first data and the second data allocated to subcarriers of the block allocation of subcarriers.

According to another aspect of the present invention, the base station device equipped with wireless communication of the present invention.

According to another aspect of the present invention a method of allocating subcarriers contains the steps that produce the first data satisfying sarane the specific conditions subcarriers selected by planning, based on the information of reception quality, which indicates the reception quality of each participant's communication and information transfer rate that specifies the transmission rate of each communication partner, and allocate the second data different from the first data, the assigned subcarriers.

Brief description of drawings

Figure 1 is a diagram showing allocation of data subcarriers according to the prior art.

Figure 2 is a block diagram showing the configuration of the wireless communication devices according to the first variant implementation of the present invention.

Figure 3 is a block diagram showing the configuration of a communication terminal device according to the first variant implementation of the present invention.

4 is a diagram showing allocation of data subcarriers according to the first variant implementation of the present invention.

5 is another diagram showing the allocation of data subcarriers according to the first variant implementation of the present invention.

Figa is another chart showing allocation of data subcarriers according to the first variant implementation of the present invention.

FIGU is a diagram showing allocation of data subcarriers according to the first variant implementation of this izobreteny is.

Figa is another chart showing allocation of data subcarriers according to the first variant implementation of the present invention.

Figv is another chart showing allocation of data subcarriers according to the first variant implementation of the present invention.

Fig is a block diagram showing the configuration of the wireless communication devices according to the second variant of implementation of the present invention.

Figure 9 is a logical block diagram illustrating the operation of the wireless communication devices according to the second variant of implementation of the present invention.

Figure 10 is a block diagram showing the configuration of the wireless communication devices according to the third variant of implementation of the present invention.

11 is a logical block diagram illustrating the operation of the wireless communication devices according to the third variant of implementation of the present invention.

Fig is a block diagram showing the configuration of the wireless communication devices according to the fourth variant of implementation of the present invention.

Fig is a logical block diagram illustrating the operation of the wireless communication devices according to the fourth variant of implementation of the present invention.

Fig is another logical block diagram illustrating the operation of the wireless communication devices according to the about the fourth variant of implementation of the present invention.

Fig is a block diagram showing the configuration of the wireless communication devices according to the fifth variant of implementation of the present invention.

Fig is a diagram showing allocation of data subcarriers according to the fifth variant of implementation of the present invention.

Fig is another chart showing allocation of data subcarriers according to the fifth variant of implementation of the present invention.

Fig is a block diagram showing the configuration of the wireless communication devices according to the sixth variant of implementation of the present invention.

Fig is a block diagram showing the configuration of the wireless communication devices according to a seventh variant of implementation of the present invention.

Fig is another logical block diagram illustrating the operation of the wireless communication devices according to a seventh variant of implementation of the present invention.

Preferred embodiments of the invention

Below is a detailed description, with reference to the drawings, preferred embodiments of the present invention.

The first option exercise

Figure 2 shows the block diagram showing the configuration of a wireless communication device 100 according to the first variant implementation of the present invention.

Each of the processing units is data transmission 120-1 through 120-n contains the block 105 retrieve information management, block 106 demodulation block 107 decoding unit 109 coding, the coding block 110, block 111 HARQ (mixed automatic repeat request) transmission unit 112 HARQ transmission unit 113 modulation and block 114 modulation. Blocks data transfer with 120-1 through 120-n are provided for the number of users, and each of the blocks of data transmission 120-1 through 120-n carries out the processing of data transmission sent by a single user.

Block 102 processing converts radio with decreasing frequency signal, received by the antenna 101, a radio frequency to the frequency of the modulating signal to the output unit 103 remove guard interval (denoted hereafter "GI").

Block 103 GI removal removes the GI from the received signal entered from block 102, the radio reception processing to output unit 104 of the fast Fourier transform (below referred to here as the "PPF").

After the received signal entered by the block 103 removal of the GI, is converted from serial data format to a parallel data format, block 104 performs FFT processing of the FFT and outputs the result to each unit 105 retrieve information management as a received signal for each user.

Then block 105 retrieve information management extracts the management information from a received signal, introduced by the block 104 FFT output unit 106 demo is ulali.

Block 106 demodulation exposes the management information is entered by the block 105 retrieve information management, demodulation output unit 107 decoding.

Unit 107 decodes decodes the received signal, introduced by the block 106 demodulation, and outputs the CQI for each sub-carrier contained in the received data after demodulation, the control unit 108. Next, block 107 decoding decodes the received signal, introduced by the block 106 demodulation, and outputs the signal or NACK signal is an ACK for the sequence 1 data contained in the received data after decoding block 111 HARQ transmission, and outputs the signal or NACK signal is an ACK for the sequence 2 data contained in the received data after decoding, the block 112 HARQ transmission.

Unit 108 controls containing the subcarrier allocator and MCS, knows the number of used subcarriers and transmission rate required by each device of the communication terminal, and therefore, in accordance with the CQI, containing the information of reception quality for each communication terminal of the user entered the block decoding 107, selects subcarriers to which the selected sequence 1 data transfer using frequency planning, and selects the assigned subcarriers to which the selected sequence 2 data without you is filling up frequency planning, thus ensuring the transmission rate required for each device of the communication terminal. This subcarriers, which are allocated sequence 1 data are localized subcarriers around a specific frequency in the frequency range of communication, and which is allocated a sequence of 2 data are the set of subcarriers distributed across the frequency band of communication. In addition, the data for the sequence 1 data are, for example, the selected data transmitted separately to the communication terminal device of each user, and the data for sequence 2 data are, for example, shared data (such as data broadcasting or data multihoming), transmitted in a General manner to the device of the communication terminal for the set of users. Sequence 1 data transfer is not limited to the selected data, and you can use any data from which it is possible to obtain the effects of frequency scheduling and adaptive modulation, such as high-speed data required for high-speed transmission, or data sent to the communication terminal while driving at a low speed, etc. Sequence 2 data is also not limited to shared data and random the data, for example, the data requiring continuous transmission at the same transmission rate, and can be used, for example, the data for which the required transmission rate is low, or data sent to the communication terminal device while driving at high speed, or data for which the effects of frequency planning is small, and the frequency of bit error can be improved by using the effects of frequency diversity.

Next, block 108 control properly selects an MCS for each M-ary number and the coding rate, etc. using CQI of the communication terminal device of each user, the entered unit 107 for decoding the sequence 1 data subjected to frequency planning. In particular, the control unit 108 maintains a table that stores information of MCS selection, correlated CQI modulation schemes, and CQI and encoding speed, and selects the modulation scheme and encoding speed for each subcarrier, addressing information of the MCS selection using CQI for each sub-carrier transmitted from the communication terminal device of each user. As for the sequence 1, a data transfer unit 108 control outputs information of the coding rate selected for each subcarrier, which is allocated the sequence 1 data, at block 109, codiovan and outputs information of the modulation scheme, selected for each subcarrier, which is allocated the sequence 1 data block modulation 113.

In addition, in the case where CQI is not reported by the device of the communication terminal, each of subcarriers for sequence 2 data, is not affected by frequency planning, unit 108 control uses a predefined encoding speed and a predetermined modulation scheme using the required transmission speed. Block 108 control displays information encoding speed containing a predetermined encoding speed, the encoding unit 110 and the information of the modulation scheme, containing a predetermined modulation scheme, at block 114 modulation. On the other hand, if the input of one element CQI indicating the average reception quality of all subcarriers in the frequency range of the communication unit 108 controls accesses information select the MCS of the entered CQI and selects the speed of coding and modulation scheme, and outputs the selected information to the coding rate, the encoding unit 110 and outputs the selected information of the modulation scheme at the block 114 modulation.

Next, block 108, the control displays information for subcarriers, which are highlighted sequence 1 data transmission by means of frequency planning, at block 115 allocation of channels and allocates in advance naznaczony the subcarriers for sequence 2 data which is not subjected to frequency planning, and outputs information subcarrier block 116 selection of channels. The necessary transmission rate is, for example, information for the proportions of the amount of data per unit time required by the communication terminal device of one user with respect to the amount of data per unit time, required by all devices of the communication terminal. Below is described the method of allocation sequence 1 data and sequence 2 data subcarriers.

Block 109 encoding encodes the input sequence 1 data (first data) and displays it on the block 111 HARQ transmission on the basis of the information of the coding rate, introduced by the block 108 control.

The coding block 110 encodes the input sequence 2 data (second data) and outputs it to the block 112 HARQ transmission on the basis of the information of the coding rate, introduced by the block 108 control.

Block 111 HARQ transmission prints a sequence 1 data entered by the coding block 109, block 113 modulation and temporarily supports the sequence 1 data displayed in block 113 modulation. When the NACK signal is entered by the block 107 decoding block 111 HARQ transmission outputs the temporarily stored sequence 1 data, for which the completion is output to the block 113 modulation, again, on request re-transmission side communication terminal device. On the other hand, when the ACK signal is entered by the block 107 decoding block 111 HARQ transmission displays the new data transmission unit 113 modulation.

Block 112 HARQ transmission outputs a sequence of 2 data entered by the encoding unit 110, at block modulation 114 and temporarily supports the sequence 1 data displayed in the block modulation 114. When the NACK signal is entered by the block 107 decoding unit 112 HARQ transmission outputs the temporarily stored sequence 2 data, for which the complete output block 114 modulation, again, on request re-transmission side communication terminal device. On the other hand, when the ACK signal is entered by the block decoding 107, block 112 HARQ transmission displays the new data transmission unit 114 modulation.

Block 113 modulation modulates the sequence 1 data entered by the block 111 HARQ transmission on the basis of the information of the modulation scheme, introduced by the block 108 control, and displays it on the block 115 selection of channels.

Block 114 modulation modulates a sequence of 2 data entered by the block 112 HARQ transmission on the basis of the information of the modulation scheme, introduced by the block 108 control, and displays it on the block 116 selection of channels.

The block 115 is adelene channels selects the sequence 1 data introduced by block 113 modulation of subcarriers on the basis of the subcarrier information entered by the unit 108 controls, and displays it on the block 117 inverse fast Fourier transform (hereinafter referred to here OBPF").

Block 116 allocation of channels allocates a sequence of 2 data entered by the block 114 modulation of the subcarriers on the basis of the subcarrier information entered by the unit 108 controls, and displays it on the block 117 OBPF.

Block OBPF 117 exposes sequence 1 data entered by block 115 selection channels, and a sequence of 2 data entered by the block 116 allocation of channels, the inverse fast Fourier transform, and outputs them to the block 118 insert GI.

Block 118 GI insertion inserts a GI into a sequence of 1 data and a sequence of 2 data entered by the block OBPF 117, and outputs them to the block 119 processing wireless transmission.

Block 119 processing wireless transmission converts with increasing frequency, etc. sequence 1 data and a sequence of 2 data entered from block 118, the GI insertion, the frequency of the modulating signal to the radio frequency for transmission from the antenna 101. The device 100 wireless transmits the management information to the communication terminal device, the coding control data with the use of block coding (not pok is Zan) and modulating the management information using block modulation (not shown). While the management information contains information of the modulation scheme, the information of the coding rate and scheduling information formed by the information of the allocated subcarrier, etc. in Addition, the management information can be transmitted to continuous or data can be transmitted as one of a sequence of 2 transfer data while transferring data.

Now we describe the configuration of the device 200 to the communication terminal with reference to figure 3. Figure 3 shows a block diagram showing the configuration of the device 200 to the communication terminal.

The processing unit 202 of the radio converts with decreasing frequency signal, received by the antenna 201, a radio frequency to the frequency of the modulating signal, etc. to the output unit 203 of the GI removal.

Block 203 deleting GI removes the GI from the received signal, introduced by the processing unit 202 of the radio broadcast output unit 204 FFT.

After the received signal entered by the block 203 removal of the GI, is converted from serial data format to parallel format data block 204 FFT removes the extension of the spectrum of each data item is converted into a parallel data format, code removal of the extension exposes its fast Fourier transform and outputs it to the block 205 demodulation and block 206 measurement of the reception quality.

Block 205 demodulation to demodu the range signal, introduced by the FFT block 204, and outputs it to the block of the HARQ reception 207.

Block 206 measuring the reception quality measures the reception quality using the received signal entered by the block 204 FFT, and outputs the measured information of the reception quality at block 213 generating CQI. In particular, the block 206 to measure the quality of reception receives the measured value indicating an arbitrary reception quality, for example, CIR (carrier to noise ratio) or SIR (signal-to-noise ratio), etc. and displaying the received measured value block 213 generating CQI information.

If the received signal entered by the block 205 demodulation is new data, then the control unit 207 HARQ reception fully or partially saves the received signal, and outputs the received signal at block 208 decoding. If the received signal is re-transmitted data, it is saved after combining with the previously stored received signal and the combined signal is output at block 208 decoding.

Unit 208 decodes decodes the received signal, introduced by block 207 HARQ reception, and outputs it as user data. In addition, the block 208 decoding performs detection and decoding errors, displays them on the block 209 definition of management information and the block 210 generating ACK/NACK. When errors are detected, you can use a CRC (cycle is an economic redundancy check). This error detection is not limited to CRC, and can also be used arbitrary methods of detecting errors.

Block 209 definition of management information, extracts the management information from a received signal, introduced by the block 208 decoding, and determines whether the user data for its own address subjected to frequency planning using the extracted control information. When frequency planning took place, unit 209 definition information control unit 213 generating CQI so that CQI is not generated, or manage unit 213 generating CQI so that was generated by one element CQI indicating the reception quality averaged over all subcarriers in the frequency range of communication. In this case, no frequency planning means that the assigned subcarriers have been allocated by the device 100 wireless connection.

Block 210 generating ACK/NACK generates a NACK signal containing the signal error detection, if necessary re-transmission using the information of the detection result of the error introduced by block 208 decoding, generates an ACK signal containing the signal error detection, when retransmission is not required, and outputs the generated signal NACK and ACK for block 211 encoding.

The coding block 211 code is any signal or NACK signal is an ACK, introduced by block 210 generating ACK/NACK, for output to the block 212 modulation.

Block 212 modulation modulates the signal NACK or ACK signal entered by block 211 encoding for output to the multiplexer 216.

When frequency planning took place, and when running unit 209 definition information management unit 213 generating generates CQI CQI, block 213 generating CQI compares the information of reception quality, introduced by block 206, the measurement of the reception quality, and the set of threshold selection CQI defined according to the reception quality, and selects and generates a CQI for each sub-carrier. In particular, the block generating CQI 213 has a reference table that stores the information for use selecting the CQI, which is assigned to different CQI, each pre-selected region of the measured value indicating the reception quality, separated by a set of threshold selection and selects the CQI CQI addressing information for use selecting CQI using the information of reception quality, introduced by block 206, the measurement of the reception quality. The block generating CQI 213 generates a CQI for a single subcarrier. The block generating CQI 213 outputs the generated CQI to the block 214 encoding. When frequency planning was not under the control block 209 definition information management unit 213 generating generates CQI CQI, ukazyvali the average reception quality for all subcarriers in the frequency range of communication block 213 generating CQI receives the average reception quality of the information of reception quality for each subcarrier, introduced by block 206, the measurement of the reception quality, and outputs one element CQI indicating the obtained average reception quality at block 214 encoding. On the other hand, when frequency planning was not and block 209 definition information control unit 213 so that it did not generate CQI, block 213 generating CQI does not generate CQI.

Block 214 encoding encodes the CQI entered by block 213 generating CQI, and outputs it to the block 215 modulation.

Block 215 modulation modulates CQI entered by block 214 encoding for output to the multiplexer 216.

The multiplexer 216 multiplexes CQI entered by block 215 modulation, and the signal NACK or ACK signals entered by the block 212 modulation, and outputs the generated data transmission unit 217 OBPF. When the CQI is not entered by block 215 modulation, the multiplexer 216 displays a block 217 OBPF only the ACK signal or the NACK signal.

Block OBPF 217 exposes transfer data entered by the multiplexer 216 in an inverse fast Fourier transform, and outputs them to the block 218 insert GI.

Block 218 GI insertion inserts a GI into the transfer data entered from block 217 OBPF output unit 219 processing the radio.

Block 219 processing converts radio with increasing frequency, etc. given the s transmission, entered from block 218, the GI insertion, the frequency of the modulating signal to the radio frequency for transmission to the antenna 201.

In the description of the wireless communication device 100 and device 200 to the communication terminal subcarriers is considered as the unit of selection, but you can also use blocks of subcarriers or resource blocks, which together are assembled together subcarriers.

Now, with reference to figure 4 and figure 5, we describe the method of allocating subcarriers on the device 100 wireless. Figure 4 shows a diagram showing the relation between the frequency and time when the sequence 1 data and a sequence of 2 data multiplexed by frequency in each frame, and figure 5 shows a diagram showing the relation between the frequency and time when the sequence 1 data and a sequence of 2 data multiplexed in time in each frame.

However, when frequency scheduling and adaptive modulation is performed on each subcarrier, the amount of control information is large and the amount of signal processing performed on the device 100 wireless device 200 to the communication terminal, an excessively large. Usually blocks subcarriers are used when a set of consecutive subcarriers, when the correlation of the fluctuations of fading is large, collected in the natural, the frequency scheduling and adaptive modulation are performed in units of blocks of subcarriers.

First, we describe the case when the sequence 1 data and a sequence of 2 data multiplexed in frequency. According to figure 4 in a predetermined frequency range of the communication sequence data 1 data sent to the device of the communication terminal of the user 1, is allocated to the block of subcarriers #301, sequence data 1 data sent to the device of the communication terminal of the user 2 is allocated to the block of subcarriers #305, and sequence data 1 data sent to the communication terminal device of the user n, allocated block of subcarriers #306. On the other hand, the data for sequence 2 data to be passed in the General procedure for the communication terminal device of the set of users, randomly selected users 1 through n, are allocated multiplexed by time channels #302, #303, #304, and the channels #302, #303, #304 subcarriers are allocated between blocks subcarriers #301, #305, #306. Channels #302, #303, #304 allocates the aggregate of subcarriers distributed across the frequency band of communication. As a result, the effects of frequency diversity for the data for sequence 2 data. In this case, the larger the number is in the allocated subcarriers and the greater the range of frequencies of subcarriers the stronger the effect of frequency diversity.

Now let us describe the case when the sequence 1 data and a sequence of 2 data multiplexed in time. According to the first method of time division multiplexing sequence 1 data and sequence 2 data, according to figure 5, in a predetermined frequency range, data for the sequence 1 data sent to the device of the communication terminal of the user 1, is allocated to the block of subcarriers #404, the data for the sequence 1 data sent to the device of the communication terminal of the user 2 is allocated to the block of subcarriers #405, and the data for the sequence 1 data sent to the communication terminal device of the user n, allocated block of subcarriers #406. On the other hand, the data for sequence 2 data to be passed in the General procedure for the communication terminal device of the set of users, randomly selected users 1 through n, are allocated to the frequency-multiplexed channels #401, #402, #403. Channels #401, #402, #403 allocated the aggregate of subcarriers distributed across the frequency band of communication. As a result, the effects of frequency diversity for the data for sequence 2 data. In this case, the more the number of allocated subcarriers and the greater the range of frequencies of subcarriers the stronger the effect of frequency diversity.

According to the second method of time division multiplexing sequence 1 data and sequence 2 data configuration of the channel is specified in units of channel intervals. Timeslot for transmission of the sequence 1 data, which was subjected to frequency planning and channel interval to send the sequence 2 data that has not been subjected to frequency planning, chosen in advance. The number of timeslots allocated to the data sequence 1 data, and the number of channel intervals, selected data for the sequence 2 data, then changes in accordance with the traffic volume, the properties of the sequence of data transmission and the environment pathways. For example, when it is necessary to reduce the resources allocated sequence 1 data transfer, and to increase the resources allocated sequence 2 data, when the channel configuration shown in figure 4 and figure 5, the number of bits that can be transmitted on one channel (for example, a block of subcarriers #301) for the corresponding MCS is reduced, and it is necessary to change the amount of data transferred to the upper layers, such as control stations, etc. This means that the impact on others is uncle significantly, and there is a need for complex management. However, according to the second method, if the channel configuration is set in advance with the units of the channel interval, you can simply change the number of channel intervals. Therefore, the number of bits transmitted in one channel does not change, and you can guarantee no effect on other functions with direct control.

Now let us describe the method of allocation sequence 1 data and sequence 2 transmission data of each subcarrier and the impact of fluctuations SIR in case of transmission of each of the sequence 1 data and sequence 2 data allocated to subcarriers with reference to figa, figw, figa and figv. How the selection sequence 1 data and sequence 2 data subcarriers, which can be viewed as two ways figa, and figa, show case selection sequence 1 data subcarriers using frequency planning and allocation sequence 2 data only localized subcarriers of a particular frequency. In addition, figa, In the shown case selection sequence 1 data subcarriers using frequency planning and allocation sequence 2 data together subcarriers is x, distributed across the frequency band of communication. On figa, figw, figa and figv on vertical axis, SIR of a received signal with fluctuations occurring in the direction of the frequency due to frequency-selective fading.

First, we describe the case figa, when the sequence 1 data is allocated subcarriers using planning and sequence 2 data is only localized subcarriers around a particular frequency.

According figa, at the time T1, data #501 for the sequence 1 data subcarriers are allocated only for parts of the frequency range of the communications planning and data #502 for sequence 2 data are allocated only localized subcarriers around a particular frequency specified in advance.

According figv at the time T2, SIR for frequency subcarriers, which are highlighted data #502 sequence 2 data, are lower than at the time T1, due to fluctuations fading, and data #501 for the sequence 1 data subcarriers are allocated the highest reception quality, other than subcarriers at the time T1, using planning. On the other hand, data #502 for sequence 2 data are allocated subcarriers defined in advance. Therefore, the selection of one and the same lifting the essence remains possible even if SIR falls. Thus, when the data #502 for sequence 2 data are allocated only localized subcarriers around a specific frequency, when SIR falls within a long period of time, the coding efficiency by correcting errors is also reduced, and the likelihood that the data #502 for sequence 2 data will not be decoded without error on device terminal connection, high.

Now let us describe the case figa, when the sequence 1 data is allocated subcarriers using frequency planning and sequence 2 data is allocated the aggregate of subcarriers distributed across the frequency band of communication. According figa, at the time T1, data #602 for sequence 1 data subcarriers are allocated only for parts of the frequency range due by planning and data #601a-#601e sequence 2 data are allocated to the aggregate of subcarriers distributed across the entire frequency range of a relation defined in advance. At the time T1 SIR for frequency subcarriers, which are highlighted data #601e, falling into force fluctuations fading, but SIR for frequency subcarriers, which are highlighted data #601a-#601d, components of the same data, does not fall. Therefore, the communication terminal device capable of receiving data #601a-#601e for having posledovatelnosti 2 data without error using the results of encoding with error correction. In addition, data #602 for sequence 1 data subcarriers are allocated to frequencies which SIR does not fall, thanks to the plan.

According figv, at the time T2, when the environment changes the distribution of SIR for frequency subcarriers, which are highlighted data #601e and data #601b, falls due to fluctuations fading, but SIR for frequency subcarriers, which are highlighted data #601a, #601c, #601d, components of the same data, does not fall. Consequently, although the processing of the reception signal is performed on the communication terminal device, it is possible to decode the data for sequence 2 data, which includes data for the data #601e and data #601b, without error using the results of encoding with error correction. In addition, data #502 sequence 1 data subcarriers are allocated to the frequencies for which the SIR is not falling, other than carriers with frequencies which are allocated at the time T1 using the planning.

According to this first variant of implementation, the sequence 1 data is allocated subcarriers using planning and sequence 2 data is allocated in predetermined subcarriers. So no need to send the CQI from the device of the communication terminal, transmitting a sequence of 2 data on each subcarriers is th. This means that the transmission speed can be increased, since it is possible to reduce the amount of control information regarding the amount of data transfer.

In addition, according to this first variant implementation is not necessary to generate a CQI for each sub-carrier on the device of the communication terminal, transmitting a sequence of 2 data, and not necessarily to carry out the planning and allocation of subcarriers for sequence 2 data transmission to the base station device. This means that it is possible to achieve high-speed signal processing device of the base station and the communication terminal device.

In addition, according to the first variant of implementation, the effects of frequency diversity is obtained by the distribution of the aggregate subcarriers across the entire frequency range of communication and highlighting sequence 2 data. Therefore, it is possible to improve characteristics of the frequency error due to the fact that the fading fluctuation, etc. has no effect, and the number of retransmissions can be reduced. This gives you the opportunity to increase overall throughput.

In addition, when the number of channel slots for transmission of the sequence 1 data transfer and the number of channel slots for transmission of the sequence 2 data varies based on the volume of traffic and so on, this can be achieved by simply increasing or decreasing the number of timeslots for transmission of each data element that allows easier handling.

The second option exercise

On Fig shows a block diagram illustrating the configuration of a wireless communication device 700 according to the second variant of implementation of the present invention.

According pig the wireless device 700 of this second variant implementation is a device 100 for wireless communication of the first variant implementation, shown in figure 2, in which the added block 701 measurement of the amount of data and the block 702 definitions of channel. On pig parts with the same configuration as in figure 2, are denoted by the same positions and are not described.

Each of the blocks of data transmission 703-1 through 703-n contains unit 105 of the information retrieval control unit 106 demodulation block 107 decoding unit 109 encoding, the encoding unit 110, block 111 HARQ (mixed automatic repeat request) transmission unit 112 HARQ transmission unit 113 of the modulation unit 114 of the modulation unit 701 measurement of the amount of data and the block 702 definitions of channel. Blocks data transfer with 703-1 through 703-n are provided for a certain number of users, and each of the blocks of data transmission 703-1 through 703-n performs about what abotu data transmission, transmitted by one user.

Block 701 measurement of the amount of data measures the amount of data for the data transmission, and outputs the measurement results to block 702 to determine the channel used. The unit of measurement of volume data 701 measures the amount of data before the data for easier management. Then the data is transmitted using the same channel you are using until you are finished with the transfer. Block 701 measurement of the amount of data informs the device of the communication terminal measurement results prior to the transfer.

Then the block definitions of channel 702 compares the results of measurement, introduced by the measurement unit data volume 701, and a threshold value, and selects the channel to use. In particular, if the measurement result is greater than or equal to the threshold value, the block 702 definitions of channel selects the data channel allocated subcarriers good quality reception using frequency planning, and outputs it to the block 109 encoding as data for the sequence 1 data. If the measurement result is less than the measurement threshold value, block 702 definitions of channel selects a data channel allocated to the assigned subcarriers, and outputs it to the encoding unit 110 as the data for sequence 2 data.

Now let's describe the slave is the device 700 wireless communication according to Fig.9. Figure 9 shows a logical block diagram illustrating the operation of the device 700 wireless connection.

First block 701 measurement of the amount of data measures the amount of data (step ST801).

Then block 702 definitions of channel compares the measured amount of data and the threshold value and checks that the data volume is greater than or equal to the threshold value (step ST802).

When the amount of data is greater than or equal to the threshold value, the block 702 definitions of channel determines the allocation of data subcarriers of the highest reception quality (step ST803).

On the other hand, when the amount of data less than the threshold value, the block 702 definitions of channel determines the selection data assigned subcarriers (fixed allocation) (step ST804).

Then the device 700 wireless transmits data allocated to subcarriers (step ST805). Except where the amount of data is greater than or equal to the threshold value, which is allocated to the blocks of subcarriers and data, where the amount of data less than the threshold value, which highlighted the assigned subcarriers, the method of allocating data to each subcarrier is the same as figure 4 and figure 5, and is therefore not described.

According to the second variant of the invention, in addition to the effects of the first variant of implementation, it is possible to allocate the data for the cat is where the amount of data is extremely large subcarriers of the highest quality using frequency planning and to carry out modulation using a modulation scheme with a large M-ary number. So you can transfer large amounts of data at high speed, and the device of the communication terminal, receiving data, can decode the data without errors.

In addition, according to this second variant implementation of the data for which the amount of data is small, stand out together subcarriers determined in advance, across the frequency band of communication. So no need to send the CQI from the terminal device connection for each subcarrier and the amount of control information can be reduced relative to the amount of data transfer. This gives the opportunity to improve the transmission efficiency. In addition, the device of the communication terminal, receiving the data, is able to decode the data without error using the frequency diversity effect.

A third option exercise

Figure 10 shows the block diagram showing the configuration of 900 wireless communication devices of the third variant of implementation of the present invention.

According to figure 10, the device 900 wireless this third variant implementation is a device 100 for wireless communication of the first variant implementation, shown in figure 2, in which a new block was added to extract the helot signal 901, block 902 evaluation speed and block 903 determine the channel used. Figure 10 parts with the same configuration as in figure 2, are denoted by the same positions and are not described.

Each of the blocks of data transmission 904-1 through 904-n contains unit 105 of the information retrieval control unit 106 demodulation block 107 decoding unit 109 encoding, the encoding unit 110, block 111 HARQ (mixed automatic repeat request) transmission unit 112 HARQ transmission unit 113 of the modulation unit 114 of the modulation unit 901 extract the pilot signal, block 902 evaluation speed and block 903 determine the channel used. Blocks data transfer with 904-1 through 904-n are provided for a certain number of users, and each of the blocks of data transmission 904-1 through 904-n carries out the processing of data transmission sent by a single user.

Block 901 extract the pilot signal, extracts a pilot signal from a received signal of the communication terminal device, introduced by block 104 FFT, and outputs it to the block 902 evaluation speed.

Block 902 evaluation speed gets the value fluctuations of the purpose of the pilot signal using the pilot signal, introduced by the block 901 extract the pilot signal, and estimates the moving velocity of the terminal device communication using the obtained value fluctuations. Then block 902 of Enki speed displays the speed for the terminal device communication unit 903 determine the channel used as the evaluation results.

Then block 903 definitions of channel compares the information of the speed entered by block 902 evaluation speed, with a threshold value to select the channel to use. In particular, if the estimated speed of movement of the user less than the threshold value, the block 903 definitions of channel selects the data channel allocated subcarriers good quality reception using frequency planning, and outputs it to the block 109 encoding as data for the sequence 1 data. If the estimated speed of movement of the user is greater than or equal to the threshold value, the block 903 definitions of channel selects a data channel allocated to the assigned subcarriers, and outputs it to the encoding unit 110 as the data for sequence 2 data.

Now describe the operation of the device 900 wireless with reference to 11. Figure 11 shows a logical block diagram illustrating the operation of the device 900 wireless connection.

First block 901 extract the pilot signal, extracts a pilot signal from a received signal, and block 902 evaluation of speed estimates the speed of the communication terminal device on the basis of the magnitude of fluctuations fading extracted pilot signal (step ST1001).

Then block 903 determine ispolzuemogo the channel compares the estimated speed and the threshold value and checks what speed less than the threshold value (step ST1002).

When the speed is less than the threshold value, the block 108 management determines the allocation of data subcarriers of the highest quality reception using frequency planning (step ST1003). Frequency planning in the case when the speed is less than the threshold value, used for the reason that the accuracy of the CQI during adaptive allocation of subcarriers at block 108 control high when the speed fluctuation of the fading caused by the movement device of the communication terminal is small compared to the period for which the device of the communication terminal reports the CQI that provides the efficiency of frequency planning.

On the other hand, when the speed is not less than the threshold value, the block 108 management determines the selection data assigned subcarriers (fixed allocation) (step ST1004). Frequency planning, when speed is not less than the threshold value, is not used for the reason that the accuracy of the CQI during adaptive allocation of subcarriers at block 108 control is low when the speed fluctuation of the fading caused by the movement device of the communication terminal is large compared with the period for which the device of the communication terminal reports the CQI, is the result of what frequency planning leads to poor communication. In this case, it is more efficient to perform transmission using channels allocated a fixed manner, for example, obtained by using frequency diversity, where CQI is not required for each subcarrier.

Then the device 900 wireless transmits data allocated to subcarriers (step ST1005). With the exception of data to be transmitted to the device terminal connection speed is, the smaller the threshold value, which is allocated to the blocks of subcarriers and data to be transmitted to the device terminal connection speed is greater than a threshold value, which highlighted the assigned subcarriers, the method of allocating data to each subcarrier is the same as figure 4 and figure 5, and is therefore not described.

According to the third variant embodiment of the invention, in addition to the effects of the first variant of implementation, it is possible to select data to be transferred to the device terminal connection with low speed subcarriers of the highest quality with the use of a private plan, and implement modulation using modulation schemes with a larger M-ary number. This gives the possibility to transfer data at high speed, and the device of the communication terminal, receiving data, can analyze the data without errors.

In addition, according to the third version of the wasp is estline data transmitted to the communication terminal device with a high speed, stand out together the assigned subcarriers across the frequency band of communication. Thus, the device of the communication terminal, receiving the data, is able to demodulate the data without error using the frequency diversity effect.

According to the third variant of implementation, the speed of the communication terminal device is measured and compared with a threshold value, but it is by no means limiting, and the speed of fading in the time direction can be estimated and compared with the threshold value. You can also get information speed from the terminal device connection.

The fourth option exercise

On Fig shows a block diagram illustrating the configuration of the device 1100 wireless communication according to the fourth variant of implementation of the present invention.

According pig device 1100 wireless this fourth variant implementation is a device 100 for wireless communication of the first variant implementation, shown in figure 2, in which the added block 1101 extract the pilot signal block 1102 measure of the dispersion of the delay and block 1103 definitions of channel. On pig parts with the same configuration as in figure 2, marked timize positions and are not described.

Each of the blocks of data transmission 1104-1 through 1104-n contains unit 105 of the information retrieval control unit 106 demodulation block 107 decoding unit 109 encoding, the encoding unit 110, block 111 HARQ (mixed automatic repeat request) transmission unit 112 HARQ transmission unit 113 of the modulation unit 114 of the modulation unit 1101 extract the pilot signal block 1102 measure of the dispersion of the delay and block 1103 definitions of channel. Blocks data transfer with 1104-1 through 1104-n are provided for a certain number of users, and each of the blocks of data transmission 1104-1 through 1104-n carries out the processing of data transmission sent by a single user.

The block extracting the pilot signal 1101 extracts a pilot signal from a received signal of the communication terminal device, introduced by block 104 FFT, and outputs it to the block 1102 measure of the dispersion of the delay.

Block 1102 measure of the dispersion of the delay measures the delay spread using the pilot signal, introduced by block 1101 extract the pilot signal.

Block 1102 measurement of the dispersion delay displays the results of measurement of the variation of the delay unit 1103 definitions of channel.

Block 1103 definitions of channel compares the delay spread obtained from the measurement results of the dispersion delay the spread of introduced block is m 1102 measure of the dispersion of the delay with the high threshold value, and compares the variation of delay with the lower threshold value. When the delay spread is greater than or equal to the lower threshold value and less than the upper threshold, the block 1103 definitions of channel displays the entered data transmission unit 109 encoding as sequence data 1 data. When the delay spread is less than the lower threshold or greater than or equal to the upper threshold value, the block 1103 definitions of channel displays the entered data transmission unit 110 encoding as sequence data 2 data. Block 1103 definitions of channel can also compare the variation of the delay on the path distribution with one threshold value, and not with the upper threshold and the lower threshold value. In particular, block 1103 definitions of channel can compare the variance of the delay determined by the measurement results of the dispersion delay the spread introduced by block 1102 measure of the dispersion of the delay and the threshold value and may output the entered data transmission unit 109 encoding as data for the sequence 1 data transfer in the case when the delay spread is greater than or equal to the threshold value, and to output the entered data transmission unit Cody the Finance 110 as the data for sequence 2 data in case when the delay spread is less than the threshold value.

Now, with reference to Fig, describe the operation of the device 1100 wireless communication in case of allocation of data transmission subcarriers on the basis of the results of the comparison of the variation of the delay, the threshold value of the upper order and the threshold value of the lower order. On Fig shows a logical block diagram illustrating the operation of the device 1100 wireless connection.

First block 1101 extract the pilot signal, extracts the pilot signal using the signal reception unit 1102 measure of the dispersion of the delay measures the delay spread using the extracted pilot signal (step ST1201).

Then block 1103 definitions of channel compares the measured variation of the delay with the lower threshold value, then checks that the delay spread is greater than or equal to the lower threshold value (step ST1202).

When the delay spread is less than the lower threshold, the block 1103 definitions of channel outputs the data transmission unit 110 and encoding unit 108 control instructs to select the data of the assigned subcarriers (fixed allocation) (step ST1203).

On the other hand, when the delay spread is greater than or equal to the lower threshold value in step ST1202, block 1103 definitions of channel checks that resposability less than the upper threshold value (step ST1204).

When the delay spread is less than the upper threshold, the block 1103 definitions of channel outputs the data transmission unit 110 and encoding unit 108 control determines the allocation of data subcarriers of the highest quality reception using frequency planning (step ST1205).

When the delay spread is not smaller than the upper threshold value at step ST1204, block 108 management determines the selection data assigned subcarriers (fixed allocation) (step ST1203).

Then the device 1100 wireless transmits data allocated to subcarriers (step ST1206).

Now, with reference to Fig, describe the operation of the device 1100 wireless communication in case of allocation of data transmission subcarriers on the basis of the results of the comparison of the variation of the delay and the threshold value. On Fig shows a logical block diagram illustrating the operation of the device 1100 wireless connection.

First block 1101 extract the pilot signal, extracts the pilot signal using the signal reception unit 1102 measure of the dispersion of the delay measures the delay spread using the extracted pilot signal (step ST1301).

Then block 1103 definitions of channel checks that the measured delay spread is greater than or equal to the threshold value (step ST1302).

When the variation of the delay b is the larger or equal to the threshold value, block 1103 definitions of channel outputs data transmission unit 109 encoding unit 108 control determines the allocation of data subcarriers of the highest quality reception using frequency planning (step ST1303).

On the other hand, when the delay spread is not greater than or equal to the threshold value, the block 1103 definitions of channel outputs the data transmission unit 110 and encoding unit 108, the control requires the selection data assigned subcarriers (fixed allocation) (step ST1304).

Then the device 1100 wireless transmits data allocated to subcarriers (step ST1305).

Now explain the reason for the frequency planning is not used when the variation of the delay on the path of expansion less than the threshold value, or when the variation of the delay on the path of propagation is less than the lower threshold or greater than or equal to the upper threshold value. With regard to the properties of the pathways, in the case where the delay spread is small, fluctuations fading in the direction of the smoothed frequency, but with a large scatter delay fluctuations become more pronounced. When the variation of the delay on the path of propagation is small and fading fluctuation in the direction of the frequency in units of subcarriers for the sequence 1 transmission and data on Fig.6 and Fig.7 is small (in the case of smooth fluctuations), from the point of view of the average reception quality in blocks of subcarriers, the difference between the highest blocks of subcarriers and lower blocks subcarriers significant and the effect of frequency planning is great. On the other hand, when the dispersion delay the spread is too small, there are almost no fluctuations fading in the direction of the frequency in all used frequency band, and for each block of subcarriers is achieved the same quality of reception, so the effect of frequency planning disappears. Therefore, frequency planning is used when the variation of the delay on the path of propagation is in the above range. In addition, when the variation of the delay on the path of propagation of the great fluctuation of fading blocks of subcarriers shown in figa, figw, figa and figv is great and the reception quality is essentially the same for all blocks of subcarriers from the point of view of the average reception quality in blocks of subcarriers. In this case, almost no effect of frequency planning, and the transmission efficiency falls by providing CQI for each sub-carrier. Similarly, when the variance of the delay on the path of propagation is small, there is no effect of frequency planning because there is no difference in the quality of reception blocks subcarriers.

Except where the delay spread is greater than or equal to threshold the mu value, or data, where the delay spread is greater than or equal to the threshold value of the lower order and less than the threshold value of the upper order, allocated blocks of subcarriers and data, where the delay spread is less than the threshold value, or data, where the delay spread is less than the threshold value of the lower order and greater than or equal to the threshold value of the highest order, which are allocated subcarriers defined in advance, a method of allocating data to each subcarrier is the same as figure 4 and figure 5, and is therefore not described.

According to the fourth variant of implementation, in addition to the effects of the first variant implementation, when the delay spread is greater than or equal to the threshold value, or when the delay spread is greater than or equal to the lower threshold value and less than the upper threshold, the data transmission are allocated subcarriers of the highest quality using planning. Therefore, when the difference in reception quality for each block of subcarriers is great for smoothing fluctuations fading, and so, the effects of high frequency planning in the allocation of data transmission to be transmitted to users with a large amount of data, which are allocated blocks of subcarriers of the highest quality reception.

In addition, according to the fourth variant of implementation, with the learn the use of the upper threshold and the lower threshold value, planning is not performed when the variation of the delay, where the difference in the reception quality for different blocks of subcarriers is smaller than the lower threshold value. This makes it possible to reduce the volume of information management and to improve the transmission efficiency due to the fact that the device of the communication terminal is not required to transmit the CQI.

On Fig shows a block diagram illustrating the configuration of the device 1400 wireless communication according to the fifth variant of implementation of the present invention.

According pig device 1400 wireless this fifth variant of the implementation is a device 100 for wireless communication of the first variant implementation, shown in figure 2, in which the added block 1401 configuration management channels. On pig parts with the same configuration as in figure 2, are denoted by the same positions and are not described.

Each of the blocks of data transmission 1402-1 through 1402-n contains unit 105 of the information retrieval control unit 106 demodulation block 107 decoding unit 109 encoding, the encoding unit 110, block 111 HARQ (mixed automatic repeat request) transmission unit 112 HARQ transmission unit 113 modulation and block 114 modulation. Blocks data transfer with 1402-1 through 1402-n are provided for a certain number of users, and each of the blocks of data per the villas with 1402-1 through 1402-n carries out the processing of data transmission, transmitted by one user.

Unit 1401 configuration management channels measures the amount of data and the required transmission rate of user data transmitted by each device of the communication terminal, and calculates the ratio for the number of low-speed data and the number of high-speed data (quantitative flow). Then block 1401 control channel configuration sets the configuration of the channel so that the ratio of high-speed and low-speed data channels data channels was equal to that calculated quantitative relation, and outputs information of the channel configuration on the block 115 allocation of channels and block 116 selection of channels.

Block 115 allocation of channels selects the sequence 1 data formed of the high-speed input unit 113 of the modulation of subcarriers on the basis of information of the channel configuration entered by the block 1401 configuration management channels, and the subcarrier information entered by the block 108 control.

Block 116 allocation of channels allocates a sequence of 2 data formed of a low-speed input unit 114 modulation modulation of subcarriers on the basis of information of the channel configuration entered by the block 1401 control channel configuration information and subcarrier entered Blo is om 108 control.

Now let us describe the method of allocating subcarriers on the device 1400 wireless with reference to figure 4, figure 5, Fig and Fig. On Fig shown is a diagram showing the relation between the frequency and time when the sequence 1 data transfer (high speed data) and sequence 2 data (low speed data) frequency-multiplexed in each frame, and Fig shown is a diagram showing the relation between the frequency and time when the sequence 1 data transfer (high speed data) and sequence 2 data (low speed data) multiplexed in time in each frame.

First, we describe the case when the sequence 1 data and a sequence of 2 data multiplexed in frequency. On Fig shows a case where the proportion of low-speed data in quantitative terms, for low-speed data and high speed data is greater than 4, and Fig shows six low-speed data channels compared to the three low-speed data channels figure 4.

According pig, in a predetermined frequency range communication sequence data 1 data sent to the device of the communication terminal of the user 1, is allocated to the block of subcarriers #150, sequence data 1 data sent to the device of the communication terminal of the user 2 is allocated to the block of subcarriers #1508, and sequence data 1 data sent to the communication terminal device of the user n, allocated block of subcarriers #1509. On the other hand, the data for the sequence of data transmission sent in a General manner to the device of the communication terminal set of users, randomly selected users 1 through n, are allocated multiplexed by time channels#1502, #1503, #1504, #1505, #1506, #1507, and channels#1502, #1503, #1504, #1505, #1506, #1507 allocated subcarriers for each block of subcarriers #1501, #1508, #1509. Channels#1502, #1503, #1504, #1505, #1506, #1507 there are combination of subcarriers distributed across the frequency band of communication. As a result, the effects of frequency diversity for the data for sequence 2 data. In this case, the larger the number of allocated subcarriers and the greater the variation of frequency subcarriers, the stronger the effect of frequency diversity.

Now let us describe the case when the sequence 1 data and a sequence of 2 data multiplexed in time. On Fig shows a case where the proportion of low-speed data in quantitative terms, for low-speed data and high-speed big data is, than 5, and Fig shows six low-speed data channels compared to the three low-speed data channels figure 5. According pig, in a predetermined frequency range communication sequence data 1 data sent to the device of the communication terminal of the user 1, is allocated to the block of subcarriers #1607, sequence data 1 data sent to the device of the communication terminal of the user 2 is allocated to the block of subcarriers #1608, and sequence data 1 data sent to the communication terminal device of the user n, allocated block of subcarriers #1609. On the other hand, the data for sequence 2 data to be passed in a General manner to the device of the communication terminal set of users, randomly selected users 1 through n, are allocated to the frequency-multiplexed channels#1601, #1602, #1603, #1604, #1605, #1606. Channels#1601, #1602, #1603, #1604, #1605, #1606 there are combination of subcarriers distributed across the frequency band of communication. As a result, the effects of frequency diversity for the data for sequence 2 data. In this case, the larger the number of allocated subcarriers and the greater the variation of frequency subcarriers, the stronger the effect of frequency diversity.

According to the fifth variant implementation, is beside the effects of the first variant implementation, the number of high-speed data channels and the number of low-speed data channels vary depending on traffic volume. This allows to further improve the transmission efficiency.

In this fifth embodiment, the number of high-speed data channels and the number of low-speed data channels vary depending on the volume of low-speed data and high volume data, but it is by no means limiting, and you can also change the number of channels for each type of data in accordance with the amount of data for each data type, or to change the number of channels for each speed in accordance with the amount of data for each speed for a predetermined range of the communication terminal device.

The sixth option exercise

On Fig shows a block diagram illustrating the configuration of the device 1700 wireless communication according to the sixth variant of implementation of the present invention.

According pig device 1700 wireless this sixth version of the implementation is a device 100 for wireless communication of the first variant implementation, shown in figure 2, in which the added block 1701 volume measurements data block 1702 definitions of channel and block 1703 control channel configuration.

Unit 1701 capacity measurement data measures the amount of data for the data transmission, and outputs the measurement results to the unit 1702 definitions of channel and block 1703 control channel configuration. Unit 1701 capacity measurement data measures the amount of data before the data for easier management. Then the data is transmitted using the same channel you are using until you are finished with the transfer. Unit 1701 measurement of the amount of data informs the device of the communication terminal measurement results prior to the transfer.

Then block 1702 definitions of channel compares the results of measurement, introduced by the block 1701 capacity measurement data, and a threshold value, and selects the channel to use. Threshold value, block 1702 definitions of channel selects the data channel, the dedicated subcarriers good quality reception using frequency planning, and outputs it to the block 109 encoding as data for the sequence 1 data. If the measurement result is less than the threshold value, the block 1702 definitions of channel selects a data channel allocated to the assigned subcarriers, and outputs it to the encoding unit 110 as the data for sequence 2 data.

Unit 1703 control channel configuration measures the amount of data and the required transmission rate of user data transmitted by each device of the communication terminal, and calculates the ratio for the number of low-speed data and the number of high-speed data (quantitative flow). Then block 1703 control channel configuration sets the configuration of the channel so that the ratio of high-speed and low-speed data channels data channels was equal to that calculated quantitative relation, and outputs information of the channel configuration on the block 115 allocation of channels and block 116 selection of channels.

Block allocation of channels 115 allocates the sequence 1 data formed of the high-speed input unit 113 subcarriers output unit 117 OBPF on the basis of information of the channel configuration entered by the unit 1703 control channel configuration, and the subcarrier information entered by the block 108 the Board.

Block 116 allocation of channels allocates a sequence of 2 data formed of a low-speed input unit 114, subcarriers output unit 117 OBPF, on the basis of information of the channel configuration entered by the unit 1703 control channel configuration, and the subcarrier information entered by the block 108 control.

In the case when the data is allocated to subcarriers thus multiplexed in frequency, as shown in Fig, high-speed data, the volume of which is greater than or equal to the threshold value, are allocated to channel #1501, #1508, #1509, and low-speed data, the volume of which is less than the threshold value, are allocated to channels#1502, #1503, #1504, #1505, #1506, #1507. In addition, low-speed data, the volume of which is greater than or equal to the threshold value, are allocated to channels #1501, #1508, #1509, and high-speed data, the volume of which is less than the threshold value, are allocated to channels#1502, #1503, #1504, #1505, #1506, #1507. This is by no means limiting, and low-speed data, the volume of which is greater than or equal to the threshold value, you can also select channels#1502, #1503, #1504, #1505, #1506, #1507, and high-speed data, the volume of which is less than the threshold value, it is possible to allocate channels #1501, #1508, #1509.

On the other hand, according pig, if division multiplexing time, high-speed data volume to the which is greater than or equal to the threshold value, are allocated to channels #1607, #1608, #1609, and low-speed data, the volume of which is less than the threshold value, are allocated to channels#1601, #1602, #1603, #1604, #1605, #1606. In addition, low-speed data, the volume of which is greater than or equal to the threshold value, are allocated to channels #1607, #1608, #1609, and high-speed data, the volume of which is less than the threshold value, are allocated to channels#1601, #1602, #1603, #1604, #1605, #1606. This is by no means limiting, and low-speed data, the volume of which is greater than or equal to the threshold value, you can also select channels#1601, #1602, #1603, #1604, #1605, #1606, and high-speed data, the volume of which is less than the threshold value, it is possible to allocate channels #1607, #1608, #1609.

According to the sixth variant implementation, in addition to the effects of the first, second and fifth embodiments, when the amount of high-speed data is great, but the total volume of high-speed data is less than the low-speed data, it is possible to improve the transmission efficiency of high-speed data, highlighting the high-speed data subcarriers of the highest quality, and the efficiency of transmission of low speed data can also be improved by increasing the number of channels for low speed data. Thus, the overall efficiency of transmission for wireless communication devices can be improved by setting the optimal number of channels is according to the amount of data low-speed data and high speed data.

On Fig shows a block diagram illustrating the configuration of the device 1800 wireless communication according to a seventh variant of implementation of the present invention.

According pig device 1800 wireless this seventh variant implementation is a device 100 for wireless communication of the first variant implementation, shown in figure 2, in which the added block 1801 volume measurements data block 1802 determine the channel that uses the new data and the block 1803 determine the channel that uses the re-transmitted data. On pig parts with the same configuration as in figure 2, are denoted by the same positions and are not described.

Each of the blocks of data transmission 1804-1 in 1804-n contains unit 105 of the information retrieval control unit 106 demodulation block 107 decoding unit 109 encoding, the encoding unit 110, block 111 HARQ (mixed automatic repeat request) transmission unit 112 HARQ transmission unit 113 of the modulation unit 114 of the modulation unit 1801 volume measurements data and block 1802 determine the channel that uses the new data. Blocks data transfer with 1804-1 in 1804-n are provided for a certain number of users, and each of the blocks of data transmission 1804-1 in 1804-n carries out the processing of data transmission sent by a single user.

Unit 1801 measuring the volume of the mA data measures the amount of data for the data transmission, and outputs the measurement results to the block definition channel, using new data 1802. Unit 1801 volume measurement data measures the amount of data before the data for easier management. Then the data is transmitted using the same channel you are using until you are finished with the transfer. Unit 1801 volume measurements data informs the device of the communication terminal measurement results prior to the transfer.

Then block 1802 determine the channel that uses the new data, compares the results of measurement, introduced by the block 1801 volume measurement data, and a threshold value, and selects the channel to use. In particular, if the measurement result is greater than or equal to the threshold value, the block 1802 determine the channel that uses the new data, selects a data channel allocated subcarriers good quality reception using frequency planning, and outputs it to the block 109 encoding as data for the sequence 1 data. If the measurement result is less than the threshold value, the block 1802 determine the channel that uses the new data, selects a data channel allocated to the assigned subcarriers, and outputs it to the encoding unit 110 as the data for sequence 2 data. Unit 1803 determine the channel that uses the re-transmitted data, determines whether the data transmission, introduced by block 113 modulation and block the om 114 modulation, new data or re-transmitted data. In the case of new data, the data is transferred as is to the block 115 allocation of channels and block 116 selection of channels. Block allocation of channels 115 and block allocation of channels 116. In the case of re-transmitted data, the data is written only to the block 116 allocation of channels as the data for sequence 2 data allocation assigned subcarriers.

Block 115 allocation of channels allocates new data input unit 1803 determine the channel that uses the re-transmitted data subcarriers based on the subcarrier information entered by the unit 108 controls and displays them on the block 117 OBPF. Block 115 allocation of channels allocates new data subcarriers of the highest quality reception.

Block 116 allocation of channels allocates new data or re-transmitted data input unit 1803 determine the channel that uses the re-transmitted data subcarriers based on the subcarrier information entered by the unit 108 controls, and displays it on the block 117 OBPF. Block 116 allocation of channels allocates new data or re-transmitted data to the assigned subcarriers.

Now, with reference to Fig, describe the operation of the device 1800 wireless communications. On Fig shows a logical block diagram illustrating the operation of the device besprovodnoy 1800.

First block 1801 volume measurement data measures the amount of data (step ST1901).

Then block 1802 determine the channel that uses the new data, compares the measured volume of new data and a threshold value, and verifies that the amount of data for the new data is greater than or equal to the threshold value (step ST1902).

When the new data is greater than or equal to the threshold value, the block 1802 determine the channel that uses the new data, instructs the allocation of new data subcarriers of the highest reception quality (step ST1903).

On the other hand, when the amount of new data is less than the threshold value, the block 1802 determine the channel that uses the new data, instructs the allocation of new data assigned subcarriers (fixed allocation) (step ST1904).

Then block 1803 determine the channel that uses the re-transmitted data, determines whether the input data is re-transmitted data (step ST1905).

When the re-transmitted data is not entered, the unit 1803 determine the channel that uses the re-transmitted data, outputs the data as is (step ST1906). As a result, the block 115 allocation of channels and the block 116 allocation of new data channels are allocated to channels defined at block 1802 determine the channel that uses the new data.

On the other hand, in the case to the da re-transmitted data is entered, unit 1803 determine the channel that uses the re-transmitted data, instructs the allocation of re-transmitted data assigned subcarriers (fixed allocation) (step ST1907).

Then the device 1800 wireless transmits new data or re-transmitted data, the allocated subcarriers (step ST1908). Except where new data for which the amount of data is greater than or equal to the threshold value, which is allocated to the blocks of subcarriers and data, where the amount of data less than the threshold value, allocated subcarriers defined in advance, the method of allocation of new data or re-transmitted data of each subcarrier is the same as shown in figure 4 and figure 5, and is therefore not described.

According to a seventh variant of implementation, in addition to the effects of the first and second embodiments, the re-transmitted data is always allocated the assigned subcarriers, and applies the fixed rate at which errors to decode subcarriers, which are highlighted re-transmitted data. This helps to prevent the re-transmitted data subjected to adaptive modulation using error-prone modulation schemes, which leads to deterioration under repeated re-transmission. In particular, since repeat is but the transmitted data is transmitted, when the data transfer last time were wrong, in the case of a resend request, it should be considered that in the case where the transfer was not carried out correctly using frequency scheduling and adaptive modulation as a result of erroneous CQI estimation, etc. during the previous transmission, the possibility exists that for the same reasons, errors can occur during retransmission. Thus, the allocation of the assigned subcarriers during retransmission is also effective in this regard because it prevents the falling of transfer speed due to repeated retransmissions.

According to a seventh variant of the implementation it is possible to obtain the frequency diversity effect, highlighting the re-transmitted data assigned subcarriers distributed across the frequency band of communication. This allows to suppress the effects of fading fluctuations in respect of the re-transmitted data to a minimum and to prevent the deterioration of transfer speed due to repeated retransmissions.

According to a seventh variant of the implementation of the re-transmitted data are allocated to the assigned subcarriers, but it is by no means limiting, and you can also select the re-transmitted data with a predetermined number or more, the surface is ornago transmission of the assigned subcarriers.

The eighth option exercise

In this embodiment, in the configuration of the wireless communication devices and devices of the wireless terminal according to the options exercise from the first to the seventh, the device of the communication terminal, allocating subcarriers by frequency planning, generates CQI only for a number of subcarriers specified by the station device of a higher level than the communication terminal device, such as device control stations, etc. and reports it to the base station device.

According to this variant implementation, the amount of control information transmitted by the communication terminal device with frequency planning can be extremely small. This allows to further increase the transmission rate by reducing the amount of control information for all devices of the communication terminal that communicates with a base station device.

According to the options exercise of the first, seventh and other options implementation uses either frequency multiplexing, or temporal multiplexing, but it is by no means limiting, and for users of the transmission method for multiple posing as a method of multiplexing possible combination of frequency multiplexing and time multiplexing. In this case, coz the ACLs options exercise of the first, third, timeslot for transmission of the sequence 1 data, which was subjected to frequency planning and channel interval to send the sequence 2 data that has not been subjected to frequency planning, are determined in advance. Then the wireless communication device allocates timeslots to the data transmission in accordance with the properties of the sequence of data transfer and protection pathways. The result is only necessary to change the allocation of timeslots in the adaptive modification of an appropriate number of channels and the amount of data transmitted over the corresponding channels, which allows for direct control. In addition, the data allocated to subcarriers of the highest quality of reception in the frequency planning, and data is allocated to subcarriers defined in advance, is not limited to data of the embodiments from the first to the seventh and other embodiments, and may apply to any data provided that you can get the results of frequency scheduling and adaptive modulation.

The wireless communication device according to the options exercise of the first, seventh, and other options of implementation can also be applied to the base station device.

The ninth option exercise

the wireless Device according to this variant implementation is for the configuration of the third variant of the implementation is provided with the evaluation unit speed for estimating the speed of movement of the communication partner on the basis of the received signal. Then the block allocation of subcarriers allocates the first data sent to the participant of communication, the speed of which the evaluation unit speed was estimated as equal to or greater than a predefined threshold value, the subcarriers selected by planning, the second data transmitted to the participant of communication, the speed of which the evaluation unit speed was estimated as less pre-assigned threshold value, the assigned subcarriers.

According to the method of allocating sub-carriers of this variant implementation of the evaluation stage speed communication partner on the basis of a received signal provided in the method of the third variant implementation. The first data sent to the participant of communication, the speed of which the evaluation unit speed was estimated as equal to or greater than a predefined threshold value, are allocated subcarriers selected by planning, the second data transmitted to the participant of communication, the speed of which the evaluation unit speed was estimated as less pre-assigned threshold value, are allocated to the assigned subcarriers. Therefore, according to the fact a variant implementation, for example, data sent to the device of the communication terminal with high speed, allocated subcarriers of the highest quality through planning. This means that the deterioration of reception quality due to fading fluctuations can be minimized. In addition, the data to be transferred to the device terminal connection with low speed, stand out together subcarriers determined in advance. This allows you to increase the speed of signal processing, since scheduling is optional.

The tenth option exercise

In the wireless communication device according to this variant implementation, the configuration of the first variant implementation, the block allocation of subcarriers selects the second data aggregate subcarriers with predefined frequency intervals in the frequency range of communication.

In addition, according to the method of allocating sub-carriers of this variant implementation, in the first embodiment, the second data are allocated together subcarriers with predefined frequency intervals in the frequency range of communication.

According to this variant implementation of the second data allocated with the allocation of subcarriers together, covering the entire frequency range of communication. This allows you to demodulate the second data without errors even when the situation is uh is Denia quality due to fluctuations fading lasts a long time due to the effect of frequency diversity.

Eleventh variant implementation

In the wireless communication device according to this variant implementation, the configuration of the first variant implementation, the block allocation of subcarriers supports reference table in which is stored information of the modulation scheme, correlating the information of reception quality and modulation scheme. Modulation scheme selected for each subcarrier by using the information of reception quality for the user, and allocate the first data subcarriers using planning so as to provide the required transmission rate for each communication partner using the information in the required transmission speed. In addition, according to the method of allocating subcarriers of the present invention, in the method of the first variant implementation, use the information of reception quality for the user and modulation scheme for each subcarrier choose the addressing information of the modulation scheme, linking information quality reception and modulation scheme. Then allocate the first data subcarriers by planning in such a way as to ensure the required transmission rate for each communication partner using the information in the required transmission speed.

Therefore, according to this variant implementation of direct treatment planning can produce the e l e C just referring to the reference table, and planning carried out in such a way as to ensure the required transmission speed. This allows you to take data of the highest quality on each device of the communication terminal.

Each functional block used in the description of each of the above embodiments, can usually be implemented by means of integrated circuits with a high degree of integration. It can be a separate chip, or they can be partially or completely contained in a single chip.

As used herein, the term "integration of high level" can be understood as IP system IP, big IP, verbally IP depending on the degree of integration.

In addition, the method of integration schemes is not limited to IP, and also a possible implementation based on a specific schema. In addition, after fabrication of the IC can be used VMPP (gate matrix custom programming) or tunable processor where connections and settings of the cell circuits in IP can be rebuilt.

In addition, if the result of the development of semiconductor technology or any other technology of integrated circuits will lead to the replacement of IP, of course, possible to integrate the functional blocks using the new technology. Perhaps t is the train biotechnology.

This description of the invention is based on Japanese patent application No. 2003-295971, filed August 20, 2003, the contents of which are fully incorporated here by reference.

Industrial application

Wireless communication and a method of allocating subcarriers of the present invention enables to increase the transmission rate due to the choice of data frequency planning, in accordance with the data type, effective in achieving high-speed signal processing, and is useful when allocating subcarriers.

1. A transfer method, comprising:
determining whether to deliver quality indicators channel for each of all the blocks of subcarriers in the frequency range of the communication or transfer quality indicator channel indicating the quality of the channel averaged over all blocks of subcarriers in the frequency range of communication, on the basis of control information included in the received signal; and
transmission quality indicators channel for each of all the blocks of subcarriers in the frequency range of communications or the quality indicator channel indicating the quality of the channel averaged over all blocks of subcarriers in the frequency range of communication, based on the definition.

2. The transmission device, comprising:
the definition block configured to determine whether to deliver quality indicators channel for each of all the blocks of subcarriers is the frequency range of the communication or transfer quality indicator channel, indicates the quality of the channel averaged over all blocks of subcarriers in the frequency range of communication, on the basis of control information included in the received signal; and
a transmission unit configured to transmit the indicator of channel quality for each of all the blocks of subcarriers in the frequency range of communications or the quality indicator channel indicating the quality of the channel averaged over all blocks of subcarriers in the frequency range of communication, based on the definition in the block definition.



 

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Base station // 2438248

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22 cl, 3 dwg, 4 tbl

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2 cl, 12 dwg

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6 dwg

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