Radio transmission device and radio transmission method

FIELD: radio engineering, communication.

SUBSTANCE: in the device and the method, BS and MS share a table correlating a basic TF as a combination of parameters such as TB size used for transmitting only user data, an allocation RB quantity, a modulation method and an encoding ratio, with a derived TF having user data of different TB size by combining L1/L2 control information. Even when multiplexing L1/L2 control information, the index corresponding to the basic TF is reported from BS to MS.

EFFECT: high downlink and uplink throughput even when performing dynamic symbol allocation.

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The technical field to which the invention relates.

The present invention relates to a radio transmitting device and method of radio to perform allocation of bandwidth in the uplink communication link through planning.

The level of technology

The group to develop the technical requirements for radio network with subscribers ("TSG RAN") of the partnership project 3rd generation ("3GPP") is currently conducting a study on the mobile communication system of the next generation, referred to as long term evolution (Long Term Evolution "LTE"). Working group 1 TSG RAN ("RAN 1") moves forward in the standardization schemes LTE radio communications with subscribers. Of them, the scheme FDMA single carrier("SC-FDMA") adopted for LTE as the scheme radio communication with subscribers in an upward link.

This scheme SC-FDMA has a low PAPR (peak-to-average power and are suitable for upstream communication link, when the transmit power for the terminal is limited. Therefore, in order to transmit information management level 1 ("L1") or level 2 ("L2") for synchronization, user data are transmitted while maintaining a low PAPR characteristic scheme of SC-FDMA is in full swing in a research multiplexing terminal in the temporary storage area control information, user data and the reference signal (pilot signal to estimate to the Nala).

As the management information L1/L2 is transmitted upstream communication link, for example, ACK/NACK in a downward link and CQI (quality indicator channel) in descending link is generated independently from the user data on the upward link and depending on the presence/absence of user data in a down link. Therefore, the number and combination of information management, L1/L2, which is multiplexed in time with the data in ascending link, change, and therefore non-Patent document 1 describes the research method of dynamic allocation of symbols of control information and user data in accordance with the management information L1/L2, which actually should multiplicious in time (hereafter "the dynamic character distribution"), thereby maximizing the efficiency of use of frequencies in the uplink communication link. That is, the number of symbols of control information L1/L2 and the number of characters allocated for user data, change in accordance with the content information control L1/L2, which should actually be multiplexed in time.

Additionally, in the framework of LTE full swing research on the use of adaptive planning in accordance with the quality of the channel in sunrise is the next link (i.e., adaptive modulation and scheduling frequency-time in accordance with the state of the channel).

When the number of characters allocated for user data varies depending on presence/absence and combinations of management information L1/L2, which are multiplexed in time, as described in the aforementioned non-Patent document 1, if the distribution of the frequency band of the upward link is through adaptive planning, a base station (hereafter "BS") must disclose information about the allocation of the frequency band of the upward link, which is required when transferring data on the rising communication link, to the mobile station ("MS"), which leads to an increase in the volume of this information.

When the BS performs adaptive planning for upward communication link in accordance with the state of the channel, the BS measures the quality of the channel upstream communication link, using the reference signals transmitted from each MS, and determines the bandwidth to distribute it to each MS, the number of characters (or the number subbarow formed with multiple characters) and the transmission parameters (including multilevel (M-ary) value of the modulation frequency coding code with the error correction coefficient distribution and so on), based on the information for determining the bandwidth h is the frequency for each MS or, more specifically, based on the amount of data that must be transferred, the transfer rate of data, information, QoS (quality of service) and so on. BS informs the information that it has determined, (i.e., information on the distribution of the bandwidth) of each MS using the downward control channel of the communication link.

Additionally, when the allocation of bandwidth for E-DCH, described in non-Patent document 2 and non-Patent document 3, the BS informs the MS only time slots allocated to the MS, and the upper limit value of transmission power, and the MS selects the frequency encoding coefficient distribution and the number of bits of the data transmission for the selected time intervals within the range of allowable transmit power, and informs the selected transmission parameters, using indexes TB (see figure 1)provided in the calculation of the size of a single transport block (hereafter "size TB"), so that the BS performs the processing when taken.

The TB size specifies the number of bits of the data transfer before added bits CRC (cyclic redundancy), and is created from the combination of the proposed transmission parameters. One ID size TB is associated with one frequency encoding and rate of spread. Multilevel value of the modulation is fixed, and it is necessary to tell, therefore, by message size TB, receiving the receiving side is able to obtain the number of information bits, the spread ratio and the speed of encoding.

Even when it is assumed centralized control system in which the BS determines the speed of the encoding coefficient distribution and the number of bits of the data transmission, the BS can still control the distribution of frequency bands, including the size of the TB in information on the distribution of bandwidth.

Non-patent document 1: R1-060111, Ericsson, "Uplink Control Signaling for E-UTRA", 3GPP TSG RAN1 WG1 Meeting #44, Denver, USA, 13-17 February 2006

Non-patent document 2: 3GPP TS 25.321V6.7.0 (Application)

Non-patent document 3: 3GPP TS 25.212V6.7.0 (4.3 Transport format detection)

The invention

Problems that must be solved by the invention

When dynamic allocation of symbols, as described above, the efficiency of use of frequencies in the uplink communication link can be increased. However, given that the number of symbols that are subject to allocation for user data varies depending on combinations of management information L1/L2, as a consequence, the above-described method of the message information on the distribution of bandwidth will only increase the amount of characters or TB size for user data prop is razionale information about the number of combinations of control and to increase the number of indexes information on the distribution of frequency bands, which should be reported, that is, to increase the number of bits. Hereafter, this case will be explained more specifically.

Here, assume that the modulation type QPSK and 16QAM adopted as the modulation of user data and the coding rate 1/6, 1/3, 1/2 taken for QPSK and 1/3, 1/2, 2/3, 3/4 - for 16QAM. In this case, as shown in figure 2, there are twenty-eight combinations of user data when transmitted only user data (i.e. the number of RB, the modulation scheme and encoding speed) and indexes transport format (indexes TF)to provide information about the distribution of bandwidth, and they can communicate using five bits. However, if you take into account the combination of ACK/NACK and CQI, as the above user data and the management information L1/L2, that is, if the range of the size of the TB, which can be used simply expanding, as in the prior art, the number of indexes TF becomes equal to 112, as shown in figure 3, and for each MS to report them, requires seven bits.

This increases the number of service signals in the transmission information management (MS → BS) for demodulation, which is transmitted as accompanying information on the distribution of the bandwidth in the uplink communication link or transferred as soprovojdali the user data in the uplink communication link, as in conventional schemes, and reduce the performance of the downstream and upstream links.

Therefore, the present invention is to provide a radio transmitting device and method of radio transmission to improve the performance of downward and upward communication links even when performing dynamic allocation of characters.

The solution

Transmitting device corresponding to the present invention employs a configuration comprising: a storage section that stores a table that is associated with an identification index of the main transport format, which is a combination of parameters such as the reference size of the transport block, the number of distributed resource blocks, the modulation scheme and the encoding speed and the derived transport format in which user data is consistent in speed by using a combination of information management, L1/L2, multiplexed with user data; section definition, which determines the transport format in the uplink communication link and selects from a table index corresponding to a specific transport format; and a transmission section, which transmits the selected information.

Transmitting device corresponding to the present invention uses a configuration containing phases, n is which determine the transport format in the uplink communication link and choose index corresponding to a specific transport format based on a table that links the primary transport format, which is a combination of parameters such as the size of reference of the transport block, the number of allocated resource blocks, the modulation scheme and encoding speed, with the derived transport format in which user data is consistent in speed by using a combination of information management, L1/L2, multiplexed with user data; and transmit the selected index.

Advantages of the invention

In accordance with the present invention, it is possible to increase the performance of downward and upward communication links when performing dynamic allocation of characters.

Brief description of drawings

Figure 1 - the relationship between the size TB and indexes TB;

Figure 2 - dependence between the parameters of the user data and indexes;

Figure 3 - the relationship between the size TB and indices for the case when the user data and the management information L1/L2 multiplexed;

Figure 4 - the relationship between rising time and frequency for radioresource and their distribution units;

Figure 5 - number of data characters in subcate relative to the number of RB, which should be distributed;

6 is a multiplexing user data UL and information the AI control L1/L2;

7 is a block diagram of the configuration of the BS in accordance with option 1 of the implementation of the present invention;

Fig - transport table format in accordance with option 1 of the implementation of the present invention;

Fig.9 is a block diagram of the configuration of the MS in accordance with option 1 of the implementation of the present invention;

Figure 10 is a sequence diagram of operations showing the steps of communication between the BS and the MS;

11 is a sequence diagram of operations showing the case when the MS is unable to receive information about the allocation of the frequency band DL on the steps of communication between the BS and the MS;

Fig - transport table format in accordance with option 2 implementation of the present invention;

Fig - transport table format in accordance with option 2 implementation of the present invention;

Fig - transport table format in accordance with option 3 implementation of the present invention;

Fig - block diagram of the configuration of the BS in accordance with option 4 implementation of the present invention;

Fig - block diagram of the configuration of the MS in accordance with embodiment 4 of the present invention;

Fig - block diagram of the configuration of a BS according to the embodiment 5 of the present invention;

Fig - block diagram of the configuration of the MS in accordance with option 5 implementing the tvline of the present invention;

Fig - transport table format in accordance with option 5 implementation of the present invention; and

Fig - way adjust the number of bits re-transmission for the case where the management information L1/L2 is multiplexed.

The best option of carrying out the invention

Now, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, components having the same functions in different variants of implementation, are assigned the same reference numbers, and repeated explanations will be omitted.

Here, figure 4 shows the relationship between time and frequency for radioresource in ascending link (UL) and their distribution units in accordance with the present embodiment. With reference to the drawing, the period of time TRBis defined as one Subcat along the time axis and one of the M frequency bands, resulting from dividing the bandwidth BWSYSon M, is defined as the bandwidth BWRBalong the frequency axis. Based on this definition, consider a system SC-FDMA in which radioresource time-frequency for the time period TRB× band width BWRBare minimum distribution unit radioresource (RB: resource block), which can be allocated to one MS.

One RB formiruete is how the part with the characters and the pilot signal, moreover, periods of part with the data symbols and the pilot signal unchanged. The part with the character data is used for information transmission control L1/L2 and user data.

In the following explanation, accepted: bandwidth BW systemSYS= 5 MHz; band width of one RB BWRB= 1,25 MHz (the number of RB on the frequency axis M = 4); and the duration of a single Subhadra TRB=0.5 MS. The number of RB allocated to one MS, varies between 1 and 4 on the frequency axis and the number of data symbols NTOTALin subcode corresponding to the number of RB for distribution, defined in figure 5. The values specified here are only examples, and can also adopt other values or other number of RB for distribution.

Additionally, this version of the implementation involves the case when there are two pieces of information management, namely, the ACK/NACK downward link and CQI downward link as information management L1/L2, which should multiplicious user data UL. Therefore, when in accordance with the presence/absence of ACK/NACK and CQI is dynamic distribution of characters, there are four ways of distribution, as shown in Fig.6, and the number of characters allocated user data ("DATA" in the drawing), NDATAvaries depending on combines the second control information. That is, as shown in figa, NDATA= NTOTALwhen data is allocated to one Subhadra are only user data, and, as shown in figv, NDATA= NTOTAL- NACKwhen data is allocated to one Subhadra are user data + ACK/NACK. Additionally, as shown in figs, NDATA= NTOTAL- NCQIwhen data is allocated to one Subhadra are user data + CQI, and, as shown in fig.6D, NDATA= NTOTAL- NACK- NCQIwhen data is allocated to one Subhadra are user data + ACK/NACK + CQI.

In addition to the ACK/NACK and CQI, the management information, such as information about the demand distribution frequency band and information about the transmission power of the terminal can also be used as control information L1/L2. Additionally, it is possible distribution of symbols for the part of management information L1/L2 on an ongoing basis, regardless of whether present or absent, and dynamic allocation of symbols can only be performed between other management information L1/L2 and user data.

Assume that the number of symbols of the ACK/NACK and CQI, the multilevel value of the modulation and encoding speed is constant and that the ACK/NACK is transmitted using twenty characters, and the CQI is transmitted using fifty characters.

The assumption is they, what user data is modulated according to the scheme QPSK or 16QAM, and when the modulation is carried out according to the scheme QPSK, user data is encoded with one of the velocity encoding 1/6, 1/3 and 1/2, and when the modulation is carried out according to the scheme 16QAM, user data is encoded with one of the velocity encoding 1/3, 1/2, 2/3 and 3/4.

Additionally, in the present embodiment, the number of bits of size TB indicates the number of bits of information transmission before added control bits CRC. For the purpose of calculation, the size of the TB is calculated for each number of selected symbols of the multi-value modulation and coding rate, believing that provided thirty-two control bits and twelve bits of the limit combinations are added when encoding error correction.

Option 1 implementation

7 shows a block diagram of the configuration of the BS 100 in accordance with option 1 of the implementation of the present invention. In this drawing section 101 encoding uses indexes TF derived from the section 111 definition of the transport format of the UL in section 109 of the UL scheduler (described below), as information on the distribution of the frequency band, applies a coding error correction to information about the allocation of the frequency band, and outputs the sequence of encoded data in section 102 of the modulation.

Section 102 modules and converts the sequence of encoded data, derived from section 101 encoding, modulation symbols in accordance with a predefined modulation schemes (QPSK, 16QAM, 64QAM, and so on), and outputs a modulated signal in section 103 of the transmission RF signal.

Section 103 of the transmission RF signal converts the up-modulated signal, derived from section 102 modulation, up from band group signal in the frequency band of transmission, and transmits the converted upward modulated signal via the antenna 104.

Section 105 of the reception RF signal receives the signal transmitted from the MS, via the antenna 104, converts the received signal down the signal bandwidth group signal and outputs the signal of the band group signal in the section 106 demodulation.

Section 106 demodulation makes the assessment and compensates channel distortion of the signal bandwidth group signal (the received sequence of data symbols)derived from section 105 of the reception RF signal, identifies the point in the signal received sequence of data symbols are subjected to compensate for channel distortion by a hardware solution or a software solution, suitable for the modulation data based on the number RB and the modulation scheme, derived from section 112 determine the format of the reception UL (described below), and displays achiev that solutions for signal points in section 107 of the decoding.

Section 107 decoding performs error correction processing of the results of the decision points of the signal derived from section 106 demodulation based on the frequency coding, derived from section 112 determine the format of the reception of the UL, and outputs the accepted sequence data in section 108 of the separation.

Section 108 of separation divides the accepted sequence data derived from section 107 decode user data UL and information management L1/L2, based on the size of the TB, extracted from section 112 determine the format of the reception UL.

Section 109 of the UL scheduler contains a section 110 table storage, transport format (TF) and the section 111 definition of the transport format of the UL. Section 110 tables storage TF keeps a table that brings together the main transport formats (hereafter "basic TF") and derivatives of transport formats (hereafter "TF derivatives"). Main TF determines the number of RB, which should be distributed, and the TB size for the case when the transmitted user data. On the other hand, together with the main TF, TF derivatives are with TB sizes, which vary depending on combinations of management information L1/L2, which are simultaneously transmitted with the user data. That is, the section 110 tables storage TF stores a table in which one index TF is prisvaivaetsya, associated with the main TF and many derivatives TF. The corresponding index TF is selected from a stored table, the selected index TF is shown in the section 111 definition of the transport format of the UL and the parameters corresponding to the index TF, shown in section 112 determine the format of the reception of the UL. Details table TF will be described below.

Section 111 definition of the transport format UL defines the number of RB required for the parameters of the distribution and transmission of the authentication information of the MS (or "UE-ID"), information about the quality of the received signal at the MS corresponding to the ID of the MS, information about the demand distribution of bandwidth (the amount of data transfer rate, and so on), information about the allocation of the frequency band DL, derived from partition scheduler DL, (not shown) and information about distribution DL CQI, derived from section CQI scheduler (not shown), selects the corresponding index TF of section 110 tables storage TF card and displays the selected index TF in section 101 encoding section 112 determine the format of the reception UL.

Section 112 determine the format of the reception UL obtains the appropriate transmission parameters from section 110 tables storage TF, based on information on the allocation of the frequency band DL, derived from partition scheduler DL, (not shown), information on the distribution of CQI DL, derived from partition scheduler is CQI (not shown) and the index TF, extracted from the section 111 definition of the transport format UL, specifies the format of the reception user data UL transferred from MS bottom-up link, and determines the reception parameters required for demodulation, such as the size of the TB, encoding speed, number RB and the modulation scheme. A certain number RB and the modulation scheme are shown in section 106 demodulation, encoding speed is displayed in section 107 of the decoding and the size of the TB is shown in section 108 of the separation.

Next will be explained the details of the above section 110 tables storage TF. Table TF is determined in advance, as shown in Fig. This table TF is stored as a table, known BS and MS.

This table TF provides a combination of two types TF, namely, the main TF and derived TF, and the main TF are assigned indexes TF. Main TF determine, for example, the number of RB, which should be distributed, the TB size, modulation scheme and encoding speed for the case when the transmitted user data, as shown in Fig.

On the other hand, together with the main TF, TF derivatives determine the size of the TB, which vary depending on combinations of management information L1/L2, which must be transmitted simultaneously with the data user. That is, TF derivatives are provided so that only changes the amount of si is oxen, which should be assigned to the user data, and with respect to other transmission parameters, including the multi-value modulation and coding rate, with the same index TF contact the same parameters as for the main TF.

In other words, a table is provided, which, together with the main TF derivatives are provided TF, so negotiate the speed with the number of characters that decreases and increases, depending on whether there is or not there is information control L1/L2, (and which is reduced by Fig), is controlled by the size of the TB.

Figure 9 shows the block diagram of the configuration of the MS 150, the corresponding option 1 implementation of the present invention. In this drawing section 152 of the reception RF signal receives the signal transmitted from the BS 100 via the antenna 151, converts the received signal down the signal bandwidth group signal and outputs the signal of the band group signal in section 153 demodulation.

Section 153 demodulation estimates and compensates channel distortion of the signal bandwidth group signal (the received sequence of data symbols)derived from section 152 of the receiving RF signal, identifies the point in the signal received sequence of data symbols are subjected to compensation canal the CSO distortion through a hardware solution or a software solution, suitable for data modulation based on the modulation scheme, and outputs the decision signal points in section 154 decoding.

Section 154 performs decoding processing, error correction results for decision-making points of the signal derived from section 153 demodulation, and outputs the accepted sequence data in section 155 of division.

Section 155 of division divides the accepted sequence data derived from section 154 decoding, user data and information about the allocation of the frequency band UL (index TF), and outputs the separated information on the distribution of the frequency band UL in section 157 of determining the transport format UL.

Section 156 tables storage TF maintains the same table as the table TF for BS 100 and section 157 of determining the transport format UL reads the parameters associated with the index TF, from the stored table.

Section 157 of determining the transport format of the UL gets the index TF, derived from section 155 of division, as information on the distribution of the frequency band UL, determines the size of the TB from the table TF, based on the information on the information transfer control L1/L2 indicating the presence/absence information management L1/L2, derived from the MAC partition (not shown), and displays a certain amount of TB in section 158 sizing TB. Additionally, with the Ktsia 157 determining the transport format UL reads the options index-linked TF, from the table TF and outputs the encoding speed of the read parameters in section 159 encoding, and the number of RB and modulation scheme in section 160 of the modulation.

Section 158 install TB size sets the size of the TB for the user data that must be transmitted, in accordance with the size of the TB, derived from section 157 of determining the transport format UL, adds CRC bits (in this case, thirty-two bits) to the data user to set the size of the TB, and displays user data in section 159 encoding.

Section 159 encoding adds bits of end combinations and applies coding with error correction to the data user, derived from section 158 sizing TB, using the encoding speed, derived from section 157 of determining the transport format of the UL, and outputs the sequence of encoded data in section 160 of the modulation.

Section 160 modulation converts the sequence of encoded data, derived from section 159 encoding, modulation symbols based on the number RB and the modulation scheme (QPSK, 16QAM, 64QAM, etc.), derived from section 157 of determining the transport format of the UL, and outputs a modulated signal in section 163 multiplexing.

Section 161 encoding applies a coding error correction to the information panel, the effect of L1/L2 with a predetermined bit rate and outputs the sequence of encoded data in section 162 of the modulation. Section 162 modulation converts the sequence of encoded data, derived from section 161 coding, modulation symbols in accordance with a predetermined modulation scheme, and outputs a modulated signal in section 163 multiplexing.

Section 163 multiplexing multiplexes user data derived from section 160 modulation, and information management L1/L2, derived from section 162 modulation, and outputs the multiplexed signal in section 164 of the transmission RF signal.

Section 164 of the transmission radio frequency signal, converts the multiplexed signal, derived from section 163 multiplexing, up and out of the signal band frequency group signal in-band transmission and transmits the converted upward multiplexed signal via the antenna 151.

Then, the steps of communication between the above BS 100 and the MS 150 will be explained using figure 10. Case when ACK/NACK is multiplexed with user data as control information L1/L2, will be explained by example.

Figure 10 on the stage ST201 BS 100 performs scheduling DL to 150 MS, transmits to the MS 150 information on the distribution of the frequency band DL and on stage ST202 BS 100 transmits user data DL to 150 MS.

In this case, at step ST203 in a top-down link on the MS 150, which made the distribution of p the band of frequencies UL, after the user data is transmitted multiple TTI (time intervals), the BS 100 performs the UL scheduling for the MS 150. In this case, the scheduler determines the appropriate transmission parameters and the number of RB for distribution, based on the information requirements of bandwidth (the amount of data transfer rate, and so on)received from the MS 150, the CQI information UL scheduled for transmission to the MS 150, information about the presence/absence or type of information control L1/L2, multiplexed with user data in the uplink communication link, and selects the index TF (= TFI)associated with the size of the TB, based on the number of RB subject to distribution, transmission parameters, control information L1/L2, which must be multiplexed determined from table TF, shown in Fig as information on the distribution of bandwidth. In this case, it is assumed that distributed the size of the TB, is equal to 242 bits and TFI=2 is selected as information on the distribution of bandwidth.

At step ST204 information on the distribution of the frequency band UL (TFI = 2) reported to be scheduled for transmission to the MS 150 in a top-down link.

At step ST205 MS 150, which took the information about the allocation of the frequency band UL, gets the amount of RB, which should be distributed, and the size of the primary TB TF from the demodulated index TF. Complement is Ino, in subcate in which data is transmitted user UL, 150 MS selects the size of the TB from the table shown in Fig, in accordance with the presence/absence and combinations of ACK/NACK DL or transmission of CQI DL, which should be carried out at the same time, performs coding and modulation data transmission of TB, using the transmission parameters associated with the received TFI, multiplexes in time the necessary information control L1/L2 and then performs transmission in the uplink communication link.

In this case, since there is ACK DL, choose the size TB = 242 and the user data are processed during transmission using QPSK and R = 1/3 as the applied modulation parameters.

Additionally, because the same BS 100 performs the allocation of the band of frequencies in descending link, and also, when scheduling for the UL, if MS 150 receives information about the distribution of bandwidth DL correctly, BS 100 knows in advance that the ACK/NACK DL multiplexed at the same time, and only reports TFI main TF and, in many cases, the MS 150 also performs UL transmission in the size of the TB, appointed station BS 100.

Next, the BS 100 demodulates the user data UL and can have a variety of cases, including, for example, the case when the MS 150 is not able to take the information distribution frequency band DL (11), and the case is, when DL CQI reported by the initiative of MS. In this case, the MS 150 executes the procedure for transmission of user data UL, using a value other than the size of the TB, appointed station BS 100 in the planning.

Therefore, the BS 100 performs blind assessment within the bandwidth of the size of the TB, the corresponding TFI reported information on the distribution of bandwidth, or performs demodulation, taking from the MS information indicating the management information is L1/L2. Even when other information is multiplexed control L1/L2, the size of the TB, MS 150 may choose, is determined in advance in the table TF, shown in Fig, so that it is possible to reduce the amount of processing to perform a blind evaluation.

Thus, option 1 implementation associates with the same index key TF, which are combinations of parameters such as the size of the TB, the number of RB, which should be distributed, the modulation scheme and encoding speed, for the case when the transmitted user data, and derived TF, which have varying sizes for TB user data depending on the combinations of management information L1/L2, so that when the dynamic distribution of the symbols is performed in the uplink communication link, the transport format could communicate only by message indexes, reducing, thus, the amounts of the bits TF information planning and improving the efficiency of the upward link without increasing the number of service signals control information. Additionally, coordination speed is controlled by regulating the number of information bits for transmission, so that even when the management information is multiplexed at the same time, it was not necessary to change the speed of coding and modulation scheme, and that, therefore, the error rate of the package is now supported.

Was explained for the case when is multiplexed ACK/NACK, but the same applies to cases when multiplexed with other types of information management L1/L2.

Option 2 implementation

Configuration BS and MS in accordance with option 2 implementation of the present invention similar to those shown in Fig.7 and Fig.9 option 1 implementation, respectively, and therefore will be used Fig.7 and Fig.9, and duplicate explanations will be omitted.

On Fig shows a table TF corresponding to option 2 implementation of the present invention. This is an installation in which the main TF are combinations of the number of RB, which should be distributed, TB size, the modulation scheme and the coding rate for the case when the transmitted user data, and wherein TF derivatives have the coding rate for user data, which vary depending on combinations of management information L1/L2. That is, such a pair of the parameters, as the number of RB, which should be distributed, the TB size and the modulation scheme does not change depending on the combinations of management information L1/L2.

Adjusting the speed of encoding may also be performed by changing the number of output bits of code with the error correction submitted by the turbo code, convolutional code and LDPC code, and the pattern of puncturing bits, when wycliffite the result of encoding with error correction. Additionally, the encoding speed can also be adjusted by changing some of the output bits encoding error correction or the number of repetitions of all bits or the number of repetitions of characters. In addition, these methods can be used in various combinations.

However, when repeated only some of the characters, character position, which must be repeated, also share in advance between the BS and MS in table TF.

Thus, in accordance with option 2 of the implementation, even when derived TF set encoding speed user data, changing depending on the combinations of management information L1/L2, the number of bits for the transport format for schedule information can be reduced so that the efficiency of use of frequencies in the uplink communication link is increased without increasing the amount of service is of Ignatov for information management. Additionally, coordination speed is controlled by varying the speed of encoding so that even when the management information is multiplexed at the same time, the number of information bits that must be transmitted, modified, and data transmission rate (i.e., baud rate) are now supported.

As shown in Fig, TF derivatives can be achieved by using multi-level modulation values so that regardless of whether multiplexed or not the management information L1/L2, adequate support is provided by changing multilevel modulation values for some or all of the transmitted symbols. In addition, installation is also possible in which the main TF is used when the CQI is transmitted. However, the combination of information management, L1/L2, which must be installed in connection with the main TF, can be any of all combinations and can be, preferably, the most frequent combination or combinations that reduce the difference in performance between the main TF and TF derivatives.

However, when used as a setting in which the Multilevel value of the modulation when the modulation is changed only for some of the characters, character position, for which the Multilevel value of the modulation when the modulation izmenaet is, also shared in advance between the BS and MS as in table TF.

Option 3 implementation

The configuration of the BS and the MS, the corresponding option 3 implementation of the present invention, similar to the configurations shown in Fig.7 and Fig.9 option 1 implementation and therefore will be used Fig.7 and Fig.9, and duplicate explanations will be omitted.

On Fig shows a table TF, corresponding to version 3 implementation of the present invention. Here, in contrast to the tables shown in Fig, TB sizes that are associated with combinations of management information L1/L2 on one-to-one basis, are not provided in respect of all indexes TF. Instead, one size TB is set for multiple combinations of management information L1/L2. That is, according to the transmission rate for user data is controlled in equal proportions between combinations of management information L1/L2.

In particular, indexes TF, using the modulation scheme with low transmission speeds and the speed of encoding, show a lower efficiency of use of frequencies than the indexes TF with higher transmission speeds, so that the efficiency radioresource may be improved by providing more links with information management L1/L2.

Thus, in accordance with option 3 implementation, the number of the ETS TF derivatives, which will give a small effect of improving the efficiency of use of frequencies, even if the speed control is performed in accordance with the presence/absence information management L1/L2, which should multiplicious, the complexity of the transmitter/receiver is required to ensure compliance with speed, may be reduced.

Parameters to control the line speed between combinations of management information L1/L2 is not restricted by the size of the TB and so forth, as described in option 2, the implementation, and can also be used in other settings such as bit rate, modulation scheme and the number of RB to be distributed. Additionally, the number of derivatives TF index TF is not limited to the number shown on Fig, and can also be installed in accordance with the performance BS and MS.

Option 4 implementation

Option 4 implementation of the present invention will be explained, assuming the case where the scheduling is performed by switching between planning, dependent on the channel/adaptive planning adaptive planning time-frequency in accordance with the quality of the channel, hereafter simply "adaptive planning") and constant/static planning.

Adaptive planning performs adaptive is adulatio, adaptive allocation of bandwidth and adaptive allocation of bandwidth group signal in accordance with the quality of the channel upstream link and the required amount of data. Additionally, information on the allocation of frequency bands according to the MS in a top-down link for each allocation of a frequency band (that is, for each planning). Examples of the use of adaptive planning contain its application to MS, which moves relatively slowly and for which bandwidth for high-quality reception and optimal transmission parameters can be assigned for each distribution in accordance with the instantaneous variation of the channel quality, or use of the services, in which data is not constant, and packages.

On the other hand, the constant planning distributes modulation scheme, encoding speed, bandwidth group signal and number of time intervals in accordance with the quality of the channel in the uplink communication link and the required quality data and reports information on the distribution of bandwidth in a down link only if the first allocation bandwidth. The second k-th distributions bandwidth allocation bandwidth is performed using pre-defined periods and the templates sequence switching frequency, and therefore the transmission of user data in the uplink communication link is performed without information about the distribution of bandwidth in a top-down link (k specifies the number of times when a fixed distribution defined by the system). Examples of constant use planning include its application to services with a constant bit rate data transmission in which data transmission is ongoing (e.g., VoIP, stream video, games, Internet and so on), and the application to the planning for MS, which is fast and which are therefore unsuitable for adaptive planning.

On Fig shows the block diagram of the configuration of the BS 300, the corresponding version 4 implementation of the present invention. Fig differs from Fig.7 that added sections 302 and 303 contain multiple tables TF and section 304 of the selection tables, and section 101 encoding is replaced by section 305 encoding.

On Fig in section 301 of the UL scheduler entered the first section 302 tables storage TF, the second section 303 tables storage TF, section 304 of the selection table and the section 111 definition of the transport format UL.

The first section 302 tables storage TF keeps a table of TF, shown in Fig, and the second section 303 tables storage TF keeps a table of TF, shown in Fig.

Section 304 table selection receives information about the type UL, indicates whether to apply for this MS adaptive planning or constant planning, and selects a table to be used when allocating bandwidth in accordance with the information about the type of planning UL. The selected table TF is used in section 111 definition of the transport format of the UL in the allocation of bandwidth and is used in section 113 determine the format of the reception of the UL, when receiving data UL.

More specifically, section 304 table selection takes a table, in which the size of the TB is installed in TF derivatives (i.e., table TF, shown in Fig), for MS obeying adaptive planning, to maximize the efficient use of frequency.

On the other hand, for MS obeying immutable planning, applied table, in which the physical layer parameters, such as bit rate, modulation scheme and the number of repetitions is set in derived TF (i.e., in the table TF, shown, for example, on Fig). This is because if MS is subjected to constant planning, its bandwidth transmission does not increase or is not reduced within a certain period, so that each time it was possible to transmit data that must be transmitted using the derived TF, between which the negotiation of speed control is aetsa, based on the coding rate, modulation scheme, number of repetitions, and so on, without changing the size of TB and reduce the latency of communication and jitter.

At constant planning information on the distribution of bandwidth is only transmitted at the first transmission and information on the distribution of bandwidth is usually not transmitted through the second through K-th distributions bandwidth for user data UL.

Section 305 encoding applies a coding error correction to the data type of the UL scheduling in addition to the index TF as information on the distribution of bandwidth, derived from the section 111 definition of the transport format of the UL, and outputs the sequence of encoded data in section 102 of the modulation.

On Fig shows the block diagram of the configuration 350 MS, the corresponding version 4 implementation of the present invention. Fig differs from Fig.9 that added section 351 and 352 store many tables TF and section 353 of the selection table.

On Fig the first section 351 tables storage TF keeps a table of TF, shown in Fig, and the second section 352 tables storage TF keeps a table of TF, shown in Fig.

Section 353 table selection receives information about the type of planning UL, derived from section 155 of division, and selects a table to be used when allocating bandwidth in soo is according to the information about the type of planning UL. The selected table TF is used by section 157 of determining a transport format for UL when allocating bandwidth.

Thus, in accordance with option 4 implementation, if MS is subjected to constant planning, bandwidth transmission does not increase or is not reduced within a certain period, so that data that must be transmitted every time reliably transmitted and the delay of communication and the jitter was reduced by managing the coordination of speed without changing the size of the TB. On the other hand, MS, which is subjected to adaptive planning, is managed using the most recent CQI after each allocation of a frequency band, so that the use efficiency of the frequency could be increased by controlling the speed agree in accordance with the size of the TB.

This version has been explained with reference to the case where two switches table TF, but the present invention is not limited to this only and can switch more tables TF.

Option 5 implementation

Option 5 implementation of the present invention will explain a case involving a system using a HARQ (hybrid automatic repeat request)based on the scheme IR (incremental redundancy).

On Fig shows the block diagram of the configuration of the BS 400, according to stuudy version 5 implementation of the present invention. Fig differs from Fig.7 that added section 402 and 403 store many tables TF and section 404 of the selection table.

On Fig in section 401 scheduler for UL entered the first section 402 tables storage TF, the second section 403 tables storage TF, section 404 of the selection table and the section 111 definition of a transport format for UL.

First, section 402 of the storage tables TF remembers the first table shown in Fig, Fig, Fig, Fig and so on, and the second section 403 tables storage TF remembers the second table, which ensures that the derived TF with different number of bits retransmission depending on the combinations of management information L1/L2.

Section 404 of table selection acquires information about the account re-transmission and selects the table to use when allocating bandwidth in accordance with the re-transmission of user data UL. More specifically, section 404 of table selection selects the first table to MS for the first transmission (i.e., account retransmissions = 0) and selects the second table for MS, with the re-transmission unit or more. The selected table TF is used in section 111 definition of a transport format for UL in the allocation of bandwidth and is used in section 112 determine the format of the reception of the UL when a UL data received.

On Fig shows the block diagram of the configuration the MS 450, the corresponding version 5 implementation of the present invention. Fig differs from Fig.9 that added sections 451 and 452 store many tables TF and section 453 table selection.

On Fig the first section 451 tables storage TF stores the first table shown in Fig, Fig, Fig, Fig and so on, and the second section 452 tables storage TF stores a second table in which the number of bits transmitted when re-transmission is set in TF derivatives in accordance with the combinations of management information L1/L2.

Section 453 table selection receives information about the account retransmissions and selects the table that should be applied when allocating bandwidth in accordance with the re-transmission of user data UL. The expense of retransmissions is determined by counting the number of NACK messages from the BS for the same service user data UL.

On Fig shows a table TF, corresponding to version 5 implementation of the present invention. As described above, TF derivatives are provided so that the number of bits re-transmission varies depending on the combination of information management L1/L2. When the number of bits re-transmission varies between re-transmission can be performed, for example, more specifically, the following regulation.

Us is Oasi an implementation option assumes based on the IR HARQ system and in this system, the redundant bits of the transmission are added each time, when resubmitting, as shown in Fig, and therefore, the number of redundant bits that you want to resend, is regulated in accordance with the presence/absence or combinations of management information L1/L2. Therefore, the number of redundant bits that must be transferred, less when there is information control L1/L2 than in the case where the management information L1/L2 does not exist (Fig(a)). As for the location of redundant bits that must be transmitted during re-transmission, re-transmission may begin with the next redundant bits after the previous transmission, as shown in Fig(b). Alternatively, as shown in Fig. 20(C), retransmission may be performed with the designated bit position in which the transfer occurs when the management information L1/L2 is not is multiplexed. The place in which redundant bits are transmissible, may be shared in advance between the BS and MS.

Thus, in accordance with option 5 implementation, compliance with speeds between re-transmissions is controlled by adjusting the number of redundant bits that must be transmitted again, and the selection pattern of redundant bits, so that even when management information of L1/L2 is multiplexed with repeated transmission of redundant bits could be transmitted perfor the but. Option 5 implementation is particularly effective in a synchronous system with HARQ, where re-transmission of information on the distribution of bandwidth for UL not reported on its downward link.

For this variant implementation explained the details of the regulation for the case when the number of bits of the retransmission is changed when re-transmission, assuming the HARQ system, based on the IR scheme, and the details of the regulation for the case when the system HARQ is applied to the system HSDPA (high speed packet access in descending link)described in non-Patent document 3, when the regulation is implemented, as discussed below. That is, the line speed and the bits of the transmission when re-transmission is determined by the parameter "s" and "r" variable RV (redundancy version), which reported information about the distribution of bandwidth.

When s = 0, the parameter "s" is a mode in which the systematic bits are preferably to be retransmitted, so that the systematic bits was chosen as the bits that must be transmitted with reference to the number of bits of the retransmission specified in table TF, and the bits of the even parity is transmitted in addition, when there is a sufficient number of bits resubmit.

On the other hand, when s = 1, the parameter's mode is the Ohm, in which the bits parity preferably be retransmitted, so that the bits parity were selected as the bits to be retransmitted with reference to the number of bits re-transmission, shown in table TF, and the systematic bits are transmitted in addition, if there is a sufficient number of bits resubmit.

The parameter r is a parameter indicating re-transmission, and determines the position, in which it starts gouging bits.

When the number of bits transmitted repeatedly increases or decreases depending on the combinations of management information L1/L2, such a system HARQ increases or decreases the number of bits which is not given priority, instead of bits, which are given priority for re-transmission. That is, when s = 0, the number of bits parity decreases or increases to match the number of bits of the retransmission. On the other hand, when s = 1, the number of systematic bits is decreased or increased to match the number of bits resubmit.

Additionally, explained the case for this version of the implementation, where two switches table TF, but the present invention is not limited to this only and can also be used to switch bolsig the number of tables. Additionally, table TF when re-transmission can be switched for each account re-transmission.

Additionally, this option may not be combined with option 4 implementation.

Although there have been explained the case of the above-mentioned variants of implementation, where the number of symbols of control information L1/L2, such as ACK/NACK and CQI, the multilevel value of the modulation and encoding speed is set by means of examples, the present invention is not limited and for example, when the number of DATA symbols, the multilevel values of the modulation and the coding rate is changed in accordance with the channel, and so on, the number of symbols of control information L1/L2 multi-value modulation and the coding rate can be determined in accordance with these changes.

The above-described embodiments of example has shown, when the main TF and TF derivatives are stored in table form, but the basic TF and TF derivatives can also be defined in the form of equations.

Also, although cases have been described with the above option as an example in which the present invention is made with the possibility of use of hardware, the present invention can be also realized by software.

Each function of the national unit, used in the description of each of the above embodiments, can usually be implemented as a large integrated circuit (LSI)formed by integrated circuits. It can be a separate chip or they may be partially or fully implemented in a single chip. Here we use the term "LSI", but this chip can also be referred to as "IC" (integrated circuit), "system LSI", "super LSI or ultra LSI" depending on different degrees of integration.

Additionally, the integration scheme is not limited to LSI, and it is also possible implementation using a dedicated circuit or a processor of General application. After manufacturing the LSI is also possible to use a programmable FPGA (user-programmable gate array) or processor with variable configuration, where connections and settings of circuit elements inside the LSI can be changed.

Additionally, if the development of the semiconductor technology or other derivative technology appears the technology of integrated circuits that replaces the LSI, of course, will also be possible to integrate the functional blocks using this technology. It is also possible the use of biotechnology.

The disclosure of Japanese patent application No. 2006-140462, registered on may 19, 2006, in h the following technical requirements drawings and abstract, is incorporated into this application in full.

Industrial applicability

Radio transmitting apparatus and method of radio transmission in accordance with the present invention can improve the performance of the descending link of communication and upward communication link even when performing dynamic allocation of symbols and can be used, for example, the 3GPP LTE radio.

1. Radio transmitting device, comprising:
a transmission section that transmits to the receiving device index representing the transfer format, which includes the size of the transport block of user data; and
a receiving section that receives the user data and the management information that is encoded using the format transmission in the receiving device and transmitted from the receiving device;
the speed of encoding user data corresponding to the size of the transport block in the format of the transmission is adjusted based on a combination of user data and control information that must be transmitted together with the user data.

2. Radio transmitting device according to claim 1, in which the transmission parameters for the data user specified in the transfer format.

3. Radio transmitting device according to claim 1, in which transmission parameters, such as the size of the transport is the main block and the modulation scheme included in the transmission format.

4. Radio transmitting device according to claim 1, in which the management information is one of: approval, denial of confirmation and the quality indicator channel.

5. Radio transmitting device according to claim 1, additionally containing a decoding section that decodes the user data and the management information is taken.

6. Radio transmitting device according to claim 5, in which the decoding section decodes the user data and the management information, which are received with the transmission format.

7. Radio transmitting device according to claim 1, additionally containing a storage section that stores the relationship between the index and transmission format,
in this case, the transmission section transmits the index, determined with reference to the transfer format and the connection.

8. Radio transmitting device according to claim 1, in which the size of the transport block of the user data is not changed depending on the combination with management information.

9. Radio transmitting device according to claim 1, in which the encoding rate of the user data is changed depending on the combination with management information.

10. Radio transmitting device according to claim 1, in which the receiving section receives the user data, which agreed on the speed by adjusting the coding rate in the receiving device.

11. Transmitting the device according to claim 1, in which the number of symbols of control information is changed depending on the number of characters the user data.

12. Way radio, containing:
transmitting, to the receiving device, the index representing the transfer format, which includes the size of the transport block of the user data, and
receiving user data and control information, which encode using the format of the transfer with the host device, and which is transmitted from the receiving device;
the speed of encoding user data corresponding to the size of the transport block in the transfer format, adjust depending on the combination of user data and control information that must be transmitted together with the user data.

13. Integrated circuit for controlling a process, comprising:
transmitting, to the receiving device, the index representing the transfer format, which includes the size of the transport block of the user data, and
receiving user data and management information that is encoded using the format of the transfer with the host device, and transmitted from the receiving device;
the speed of encoding user data corresponding to the size of the transport block in the transfer format, is regulated depending on whom is inali user data and control information, which should be transmitted together with the user data.

14. Integrated circuit for controlling a process, comprising:
receiving an index representing the transfer format, which includes the size of the transport block of user data;
encoding the user data and control information using the transmission format; and
transmitting the encoded user data and control information,
the speed of encoding user data corresponding to the size of the transport block in the format of the transmission is adjusted based on a combination of user data and control information that must be transmitted together with the user data.



 

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11 cl, 59 dwg

FIELD: information technology.

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4 cl, 14 dwg

FIELD: information technology.

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FIELD: physics, communications.

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18 cl, 11 dwg

FIELD: radio engineering, communication.

SUBSTANCE: transmitter includes multiple transmitting antennae; a conversion unit configured to generate multiple signal sequences corresponding to a predefined frequency bandwidth from one or more transmission streams associated with any of the transmitting antennae; a precoding unit configured to set the weight the signal sequences using a precoding matrix selected from a code module including multiple predefined precoding matrices; and a transmitting unit configured to convert an output signal from the precoding unit into a number of signals corresponding to the number of transmitting antennae and transmit the converted signals from the transmitting antennae. The precoding unit applies different precoding matrices to different signal sequences, and the relationship between the different precoding matrices and the different signal sequences is determined through open-loop control which is independent of feedback from a receiver.

EFFECT: high capacity.

24 cl, 18 dwg

FIELD: radio engineering, communication.

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EFFECT: high downlink and uplink throughput even when performing dynamic symbol allocation.

14 cl, 20 dwg

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