Device and method for transmitting and receiving information about quality of forward channel in mobile communication system

FIELD: mobile communication systems.

SUBSTANCE: absolute-value character being transmitted presents forward-channel signal power at least in one time slot corresponding to chosen time slot, and relative-value character presents variation between forward-channel signal power in slot corresponding to one of mentioned remaining time slots and signal power of forward channel in preceding time slot.

EFFECT: enhanced quality and throughput capacity of forward channel.

60 cl, 17 dwg, 7 tbl

 

The scope of the invention

The present invention relates in General to the mobile communications system that supports multimedia services, including voice service and data service, and, in particular, to a device and method for transmitting and receiving information, serving as a speed indicator direct data transfer between a mobile station (MS) and base station (BS).

Prior art

A typical mobile communication system, in particular a mobile communication system, multiple access, code-division multiplexing (mdcr), which include synchronous mdcr (IS-2000) and asynchronous universal mobile telecommunications service (USMT) (broadband mdcr)support integrated service voice communication, data transmission via dedicated channels and low-speed packet data (for example, with a speed of 14 Kbps and below). However, with the increasing demands of users in the service, high-speed packet data, for example access to the Internet, led to the development of the respective mobile communication systems. The CDMA2000 1x EV-DO (only data transfer supported service high speed packet data with a speed of 2 Mbps and above by allocating resources voice communication service data, however, this system suffers from the disadvantage is that that it does not support voice communication service and transmission service at the same time.

To meet the demand in the mobile communication system supporting an existing voice communication service, and service high speed packet data, was proposed system CDMA2000 1x EV-DV (data and speech). In the system of the 1x EV-DV BS schedules a transmission packet data and determines transmission parameters in accordance with the direct channel. Namely, for each time interval (slot) BS from many MS communicates with the BS at the moment, selects one MS, which corresponds to the highest quality direct channel, transmits on the selected MS packet data in accordance with a direct channel to the selected MS, determines transmission parameters (e.g., data rate, code rate and the order of modulation).

The ratio of carrier power to interference (C/I)relating to proceeds from the BS direct common channel pilot signal (P-ACNP) and measured in each MS, is essential for determining the quality of the forward channel MC. MS informs the BS about the measure/I on the reverse channel quality indicator channel (On-Knick). The base station schedules transmission of packet data on direct channels packet data (P-CNPD) and determines transmission parameters according to gender is received from the MS values/I.

Figure 1 is a block diagram of a conventional transmitter included MS intended for transmission to the BS information about the quality of the forward channel. According to figure 1 in each time slot has a duration of 1.25 MS measured C/I P-ACNP taken from BS (sector if the sector BS), which at the moment is the exchange of data, carry out the discretization of this C/I, and converts it to binary 5-bit symbol of quality indicator channel (ICC). The encoder 110 encodes the symbol ICC code speed 5/12 (R=5/12) and produces a 12-bit sequence of the KIC. The generator 120 Walsh codes generates a masking code Wi8(i = 0,...,7) Walsh length 8 in accordance with best indicator of the sector (ILS), which points to the BS with the highest quality direct channel among the BS that this station can recognize.

Block 130 masking by Walsh generates a 96-bit symbol, masked by Walsh, by multiplying the above code sequence on the masking code Wi8Walsh. Block 140 signal display displays the 96-bit symbol in a symbol consisting of +1 and-1. Before transferring unit 150 expanding the range for Walsh extends the range of the output Segal unit 140 of the display signal using the code Wi12Walsh, appointed Knick.

Fig. represents a timing diagram of transmission and reception at the BS and MS information about the quality of the forward channel. According to 2 MS in each slot On Knick on the BS transmits the symbol is ICC, the employee indicator With/I P-ACNP coming from the BS. After some delay in the signal propagation, the BS receives this symbol ICC and uses it for planning Knpd and define Knpd. The delay in signal propagation time is the time required for transmission of symbol ICC through the ether. According to figure 2 taken in the n-th slot O-Knick symbol ICC after some delay to the processing applied to the (n+1)-th slot, the P-CNPD. The delay corresponds to the processing time required to calculate the C/I P-ACNP character-based ICC, planning packet data and determine the transmission parameters.

In the above described conventional method of transmitting and receiving information about the quality of the forward channel bandwidth BS for the reverse traffic is markedly reduced, as many MS transmit to the BS symbol ICC in each slot. Moreover, coming from stations MS channels On-Knick create mutual interference, resulting in increased level of mutual interference within the entire system.

The invention

Thus, one of the objectives of the present invention is to provide a device and method of information transfer as a direct channel that minimizes the overhead information transmitted over about atoi line in the mobile communication system supporting a voice service and packet data.

Another objective of the present invention is to provide a device and method of information transfer as a direct channel that minimizes the transmit power on the reverse of the communication line in a mobile communication system supporting a voice service and packet data.

Another objective of the present invention is to provide a device and method of information transfer as a direct channel that minimizes interference channels return line connection in the mobile communication system supporting a voice service and packet data.

Another objective of the present invention is to provide a device and method separate transmit information about the quality of the forward channel in the form of absolute values and relative values in a mobile communication system supporting a voice service and packet data.

Another objective of the present invention is to provide a device and method information is received as a direct channel for scheduling packet data and determination of transmission parameters in a mobile communication system supporting a voice service and packet data.

To solve the above and other is ADAC provided by the apparatus and method of transmitting and receiving information as a direct channel between the base station and mobile station in the mobile communication system mdcr, support multimedia services, including voice service and data service.

In accordance with one aspect of the present invention, the MS measures the signal power of the direct channel into multiple time slots and transmits the symbol of the absolute value of the at least one time slot selected from the set of time slots, and the symbol of the relative values of at least one timeslot of the remaining time slots. In this case, the symbol of the absolute value represents the signal quality of the downlink channel, attributable, at least one time slot corresponding to the selected time slot and symbol relative values represents a change in the signal strength of the direct channel, attributable, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the signal strength of the direct channel, measured in the previous time slot.

In accordance with another aspect of the present invention, the MS measures the signal power of the direct channel into multiple time slots, and transmits the symbol of the absolute value of the at least one time slot selected from the set of time slots, and stores the result of the power measurement signal. In this case, the symbol of the absolute is cosy values represents the signal strength of the forward channel, the measured at least one time slot corresponding to the selected time slot. The MS transmits the symbol of the relative values of at least one timeslot of the remaining time slots, updates the value of the signal power corresponding to the previous time slot, according to what is the symbol relative values, and stores the new value for the output signal. The symbol relative values represents a change in the signal strength of the direct channel, attributable, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the value of signal power of the direct channel, stored in the previous time slot.

In accordance with another aspect of the present invention, the BS accepts the symbol of absolute value at least during one time slot selected from the set of time slots, according to the character of the absolute value calculates the signal power corresponding to the selected time slot, accepts the symbol relative values, at least one of the remaining time slots, updates the value of the signal power corresponding to the previous time slot, according to what is the symbol relative values, and calculates the signal power, with testwuide mentioned one of the remaining time slots.

In accordance with another aspect of the present invention, the generator of the characters in the MS generates a symbol of absolute value at least during one time slot selected from the set of time slots, and generates a symbol of the relative values of at least one of the remaining time slots. In this case, the symbol of the absolute value represents the signal quality of the downlink channel, attributable, at least one time slot corresponding to the selected time slot and symbol relative values represents a change in the signal strength of the direct channel, attributable, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative signal strength of a downlink channel corresponding to the previous time slot. Block coding encodes the symbol of absolute values and the symbol relative values.

In accordance with another aspect of the present invention, the receiver in the BS accepts the symbol of absolute value at least during one time slot selected from the set of time slots, and the symbol relative values, at least one of the remaining time slots. The computing unit symbols calculates the signal power corresponding to the selected time slot, according to the character of the absolute value, updates the value for the output signal corresponding to the previous time slot, according to what is the symbol relative values, and calculates the signal power corresponding to the aforementioned one of the remaining time slots.

Brief description of drawings

The above and other objectives, features and advantages of the present invention are explained in the detailed description below with reference to the drawings, in which:

figure 1 - block diagram of the conventional transmitter MS intended for transmission to the BS information about the quality of the forward channel;

figure 2 - timing diagram of transmission and reception of information about the quality of the forward channel in the conventional BS and MS;

figure 3 corresponds to one of the embodiments of the present invention a block diagram of the transmitter MS intended for transmission to the BS information about the quality of the forward channel;

figure 4 - an appropriate option for implementation of the present invention, the table mappings, in which the levels of C/I P-ACNP appear in the symbols of absolute values;

5 is an appropriate option for implementation of the present invention a block diagram of the BS receiver intended for receiving from the MS information about the quality of the forward channel;

6 is an appropriate option for implementation infusion is his invention the timing diagram of transmission and reception of information about the quality of the downlink channel between the BS and the MS in the case, when the symbol of the absolute value of the transmit once every four slots;

Fig.7 is an appropriate option for implementation of the present invention the timing diagram of the alternate transmission of the symbols of the absolute values from the MS to the BS;

Fig - appropriate variant of implementation of the present invention illustration of a transmission symbol ICC when the symbol of the absolute value is transmitted with the transmission interval, equal to 8;

figure 9 is an illustration corresponding to another variant implementation of the present invention the transmission of consecutive characters of the absolute values;

figure 10 is corresponding to the second variant of implementation of the present invention the timing diagram of the alternate transmission of the symbols of the absolute values from the MS to the BS, when two characters are the absolute values are transmitted from each MS in two consecutive slots;

11 - corresponding to the present invention a block diagram of the algorithm, illustrating one of the embodiments performed in MS procedures for the transfer on the BS information about the quality of the forward channel;

Fig - corresponding to the present invention a block diagram of the algorithm, illustrating one of the embodiments performed in BS admission procedures from MS information about the quality of the forward channel;

Fig - appropriate infusion is his invention a block diagram of the algorithm illustrating another variant implementation running in MS procedures for the transfer on the BS information about the quality of the forward channel;

Fig - corresponding to the present invention a block diagram of an algorithm illustrating another variant of the implementation performed in BS admission procedures from MS information about the quality of the forward channel;

Fig - corresponding to the present invention a block diagram of an algorithm illustrating a third option exercise performed in MS procedures for the transfer on the BS information about the quality of the forward channel;

Fig - corresponding to the present invention, the table of mappings, which lists the characters of the KIC, which is the input of the encoder, which appear in the code sequence, which is output from the encoder;

Fig is a block diagram corresponding to the present invention the encoder, using different encoders for separate encoding of the symbol of absolute values and character relative values.

A detailed description of the preferred embodiments

Below with reference to the drawings described preferred embodiments of the present invention. In the following description, detailed descriptions of well-known functions or constructions are omitted so as not to obscure the invention with unnecessary details.

Currently the m invention the MS transmits to the BS in a predetermined time slot of the absolute value of the signal strength of the direct channel, measured in this MS in the current time slot, and the remaining time slots relative value of the signal strength of the direct channel. The relative value is an indicator of increase, no change or decrease the signal strength of the direct channel as a result of comparison between the capacities of the signals corresponding to the current time slot and the previous time slot. Therefore, the relative value may be passed through a smaller information volume and with less power.

Although the following description is in the context of the system IS-2000 1x EV-DV, the present invention is also applicable to other mobile communication systems operating under similar process conditions and the structures of the channels with modifications made within the scope and essence of the present invention that is obvious to experts in the field of technology.

Figure 3 represents a corresponding one of the embodiments of the present invention a block diagram of the transmitter MS intended for transmission to the BS information about the quality of the forward channel. The MS transmits to the BS in the corresponding slot On Knick information about the quality of the P-ACNP, which is the result of a measurement performed in a predetermined time slot.

According to figure 3 With/I P-ACNP received is from my BS, communicates with the considered MS at the moment, which is measured for each time slot has a duration of 1.25 MS, is supplied to the generator 210 characters of the KIC. The generator 210 characters KIC converts the C/I symbol ICC representing the absolute value/I (in the future this symbol is marked with the term "symbol of absolute values or the character of the KIC, representing the relative value of/I (i.e., increase, equality or decrease) (in the future this symbol is marked with the term "symbol relative values"). In accordance with a rule set in advance between the BS and the MS during a call, the generator 210 characters KIC forms the symbol of the absolute values in a predetermined time slot and the symbols relative values in the remaining slots. The symbol of the absolute value corresponds to the level of C/I. Figure 4 illustrates a table of mappings, in which the levels of C/I P-ACNP appear in the symbols of absolute values.

According to table mappings in figure 4, the symbols of absolute values are 16 levels With/I, each of which corresponds to the band width from 1.4 to 1.5 dB. Despite the fact that in accordance with the 4 most significant bits (GSZ) each symbol ICC reserved, using a 5-bit characters the KIC can be expressed to 25levels of C/I. the Symbol otnositelnoj the value represents a change (increase, equality or decrease) With/I corresponding to the current slot, compared to C/I corresponding to the previous slot.

Therefore, the generator 210 characters ICC maintains a table of mappings in figure 4, produces in this table, symbol search of the absolute values of the corresponding C/I measured in each slot, and outputs the symbol. The generator 210 characters KIC also stores the measurement result With/I, compares the C/I corresponding to the current slot, with I corresponding to the previous slot, and generates a symbol relative values representing the change To/I.

The encoder 220 encodes the symbol ICC and produces a 12-bit code sequence. Generator 230 masking Walsh codes generates a masking code Wi8(i = 0, ..., 7) Walsh in accordance with HUD officials indicator BS with the highest quality direct channel environment BS, which is considered MS can recognize.

Block 240 masking by Walsh generates a 96-bit symbol, masked by Walsh, by multiplying the above code sequence on the masking code Wi8Walsh. Block 250 signal display displays the 96-bit symbol in a symbol consisting of +1 and-1. Block 260 expansion of the range of the Walsh extends the range of the output unit 250 of the display signal using the code W1216is also, appointed Knick. Before passing the signal output unit 260 expansion of the range for Walsh is amplified to an appropriate level of transmission power in the power amplifier (not shown).

As shown above, the symbol for absolute value is larger information amount than the character relative importance, as it directly represents the C/I P-Oknp. Therefore, it is preferable to transmit the symbol of absolute values with greater transmit power (for example, twice as much) compared to the transmit power of the symbol relative values, so it is guaranteed the reliability of the transmission symbol of the absolute value and savings transmit power of the MS during the transmission period of the symbol relative values.

Figure 5 is a corresponding consider the variant of implementation of the present invention a block diagram of the BS receiver intended for receiving from the MS information about the quality of the forward channel. BS uses the information as adopted by O-Knick in a predetermined time slot, corresponding to the time slot P-CNPD.

According to figure 5 block 310 compression range for Walsh compresses the range of the signal received from the MS in each time slot, using the code W1216Walsh, appointed On Knick. Channel compensator 320 performs the canal the second compensation signal with spread spectrum. Block 330 enabling IRQ-unmasking the Walsh restores the ILS by enabling IRQ-unmasking signal for which was made channel compensation, according to Walsh. The decoder 340 decodes the signal for which was made channel compensation, with a corresponding code rate, thereby restoring the character of the KIC. Block 350 calculations characters ICC computes the C/I P-ACNP, using the recovered symbol ICC.

Below the calculation of C/I is described in more detail.

Whenever the decoder 340 generates a symbol of the KIC, block 350 calculations characters ICC determines whether a given symbol ICC symbol of the absolute values or character relative values. In accordance with a rule predefined between the MS and the BS during a call, block 350 calculations characters ICC defines the symbol ICC in a predetermined time slot as the symbol of absolute values, and the symbols of the KIC in the rest of the slots as the symbols of the relative values. In the case of the symbol of the absolute value block 350 calculations characters ICC computes the C/I P-ACNP, using the symbol of absolute values. To perform this operation unit 350 calculations characters KIC contains a table of the mappings in figure 4, in which he searches for C/I corresponding to this symbol of absolute values. In the case of the symbol relative value unit 350 calc is of the character of the KIC calculates the C/I P-ACNP in the current slot, using this symbol relative values, and/I P-ACNP saved in the previous slot.

6 is a relevant consideration variant implementation of the present invention a timing diagram of transmission and reception of information about the quality of the downlink channel between the BS and the MS in the case when the symbol of the absolute value of the transmit once every four slots.

According to 6 MS transmits to the BS symbol ICC representing a C/I P-ACNP, On-Knick in each slot. After reception of a symbol ICC after some delay on the signal propagation, the BS uses this symbol ICC for planning channels Knpd and to determine the transmission parameters after some delay in processing. The delay in signal propagation time is the time required for transmission of symbol ICC through the ether, and the delay processing is the time required to calculate the C/I using the symbol of the KIC, execution planning and determination of transmission parameters.

More specifically, the MS transmits on-Knick symbol of absolute values in the n-th slot, and the symbols of the relative values of (n+1)-th, (n+2)-th and (n+3)-th slot. The symbol of the absolute value of the transmit power transfer, twice the transmit power of each symbol relative values. The BS calculates the C/I P-ACNP, using the symbol of absolute values, and determine the focus of MS, which should be selected (n+1)-th slot, and transmission parameters (e.g., data rate, code rate and the order of modulation for transmission in (n + 1)-th slot. The value of C/I corresponding to the n-th slot, update via symbol relative values adopted in the (n+1)-th slot and applied to the (n + 2)-th slot, the P-CNPD.

For example, if the symbol of the absolute values of the n-th slot is equal to '00100', in accordance with the table of mappings in figure 4 BS determines that the C/I P-ACNP corresponding to the n-th slot is -10,2 dB. If the symbol relative values in the (n+1)-th slot is the increase in C/I, the BS determines that the C/I P-ACNP corresponding to the (n+1)-th slot, as well -8,8 dB.

Which of the slots On Knick should be allocated to the symbols of absolute values, can be defined in many ways. One of them is to use a reverse bias frame (USC), which is unique for each MC. Then slots for characters absolute value, is determined as follows:

(T-N-OCK) MOD INT (1)

where T is the system time, measured in slots; INT - transmission interval, over which is passed a symbol of the absolute values; N is the parameter that determines the interval INT transmission slot assigned for transmission of the symbol of absolute values; USC is a reverse bias frame, which is unique for each MS, a MOD PR is dstanley operation "modulo". Equation (1) is true even when the USC replace other options that are unique to the MC. In the synchronous mobile communication system equation (1) gives the same result for MS and BS as the MS is synchronized with the system timing characteristics BS. Thus, the MS transmits the symbol of absolute values in a slot when the solution of the equation (1) is equal to 0, and transmits the symbols relative values in the remaining slots. Using equation (1), the BS also determines the slot assigned to the symbol of absolute values.

N set so that the slots in which many MS communicate with the BS, the characters, the absolute values were passed alternately over the interval INT gear. The reason for the allocation of slots allocated for transmission of the symbols of absolute values, is to reduce the mutual interference between symbols due to the transfer of characters to the absolute values with a relatively high transmit power.

Fig.7 is a relevant consideration variant implementation of the present invention a timing diagram of alternate transmission symbols of the absolute values from the MS to the BS. If the interval INT transmission symbols absolute value is equal to 4 slots, then the result is the RMS mod 4(=N) is equal to one of the following values: 0, 1, 2 and 3. Here, the system is time is not considered, because it is identical to the time MS. Further, the slots designated for transmission from the MS symbol absolute values are distributed in time according to the parameter N.

According to Fig.7. group 1 includes MS with N=0, group 2 includes MS with N=1, group 3 includes MC with N=2, and group 4 includes MS with N=3. N, are determined by negotiation between the BS and the corresponding MS during a call.

Fig illustrates considered appropriate variant of implementation of the present invention the transmission symbol ICC when the symbol of the absolute values passed with the transmission interval equal to 8. As shown in Fig, the symbol of absolute values passed in every eighth time slot, and the characters relative values passed in the remaining time slots.

Although it was previously described that MS transmits the symbol ICC on-Knick in each slot, the present invention is also applicable in the case when the symbol ICC transmit once every two, four or more slots. For example, if the symbol ICC transmit once every two slots, and the transmission interval is 16 slots, the symbol of absolute values are passed in one of the 16 slots, and the symbols of the relative values of 7 slots.

In accordance with the present invention, the MS transmits the symbol of the absolute values are not in each slot, and in which aranee the specified slot. Therefore, if the symbol of the absolute value of the lost, before reception of the next symbol of the absolute values of BS will not be able to know the exact values of C/I P-Oknp. This implies that the symbol for absolute value requires greater transmission reliability than the symbol relative values. However, simply pass the symbol of the absolute values with a higher transmission power compared to the transmit power of the symbol relative values may not be sufficient to meet the above requirements. Therefore, in accordance with another embodiment of the present invention, the symbols of the absolute value of the transfer, at least in two consecutive slots.

Fig.9 illustrates the corresponding another variant implementation of the present invention retransmission symbol of absolute values. During one transmission interval MS transmits two symbols absolute value.

According to Fig.9 MS transmits the symbol of the absolute values Of Knick in the n-th slot and the (n+1)-th slot, and the symbol of the relative values of (n+2)-th slot and the (n+3)-th slot. The symbol of the absolute values of the n-th slot is C/I P-ACNP corresponding to n-th slot, and the symbol of the absolute values in (n+1)-th slot is C/I P-ACNP corresponding to the (n+1)-th slot. Symbols absolute value of the lane is given when the level of transmission power, twice the power level of characters relative values.

As stated above, due to the fact that the positions of the slots for the transmission symbols of the absolute values determined by the parameter N, each MS shall appoint two parameter N. for Example, the MS transmits the symbols of the absolute values in the slots corresponding to N=0 and N=1, and the symbols of the relative values in the remaining slots. The BS calculates the C/I P-ACNP using accepted in the n-th and (n+1)-th slot symbols absolute value. Even if any of the symbols of the absolute values would be lost, the BS will be able to accurately calculate the C/I P-Oknp. Transfer two characters of the absolute values in two consecutive slots ensures a more reliable transmission symbols absolute value.

Figure 10 is a corresponding second variant implementation of the present invention a timing diagram of alternate transmission symbols of the absolute values from the MS to the BS when two characters are the absolute values are passed from each MS in two consecutive slots. As can be seen from the illustration, the slots designated for the transmission symbols of the absolute value, distributed in time.

The formation and interpretation of symbols KIC

11 is relevant to the present invention a block diagram of the algorithm, Illus ryuudou one of the options for running in MS procedures for the transfer on the BS information about the quality of the forward channel. The generator 210 characters KIC in figure 3 performs the following procedure in MS in each time slot.

According to 11 at step 400 MS measures the signal strength, that is, C/I, P-ACNP in the current time slot. At step 410, the result of measuring C/I keep for comparison with the C/I P-ACNP corresponding to the next slot. At step 420 by equation (1) MS determines whether to transmit the C/I as the symbol of absolute values or character relative values. If, in accordance with the current system time, the calculation result of equation (1) equal to 0, the MS determines that it should communicate the absolute value of C/I, otherwise, it determines that it should transmit the relative importance of C/I.

If the current time slot for the symbol of absolute value, then at step 430 MS generates a symbol of absolute values representing a C/I in accordance with table mappings.

If the current time slot designed for symbol relative value, then at step 450 MS compares the C/I P-ACNP corresponding to the previous slot, with C/I P-ACNP corresponding to the current slot. In accordance with the table of mappings on stage 460 MS determines whether the C/I P-ACNP corresponding to the current slot, large, equal to or less than C/I P-ACNP corresponding to the previous slot.

If C/I P-ACNP, soo is relevant to the current slot, more C/I P-ACNP corresponding to the previous slot, then at step 470 MS forms the symbol of the relative values representing the increase in C/I. for Example, representing an increase in C/I symbol relative values set equal to '11'. If C/I P-ACNP corresponding to the current slot is equal to C/I P-ACNP corresponding to the previous slot, then at step 480 MS generates a symbol of relative values, representing no change C/I. for Example, representing no change in C/I symbol relative values set equal to '00'. If C/I P-ACNP corresponding to the current slot, the smaller C/I P-ACNP corresponding to the previous slot, then at step 490 MS generates a symbol of relative values, representing a decrease of C/I. for Example, representing a decrease of C/I symbol relative values set equal to '01' or '10'. The number of bits and the contents of the symbol relative value is determined depending on the type of encoder, the input of which is applied the symbol relative values, as described below.

At step 440, the symbol is ICC, formed on one of the stages 430, 470, 480 or 490, passed by On-Knick. That is, the symbol ICC is fed to the encoder 220 in figure 3 and is transmitted to the BS in accordance with the above procedure.

Fig is relevant to the present invention a block diagram of an algorithm illustriou the General one of embodiments performed in BS admission procedures from MS information about the quality of the forward channel. Block 350 compute the characters of the KIC in figure 5 performs this procedure in the BS in each time slot.

According pig after taking to the stage 500 symbol ICC in the current time slot at step 510 BS determines whether the symbol ICC symbol of the absolute values or character relative values. If the current slot, which was adopted symbol of the KIC, designed for symbol absolute values, the accepted symbol of the KIC is a symbol of absolute values. If the current slot is designed for symbol relative values, the accepted symbol of the KIC is a symbol of relative values. This definition is carried out in accordance with the same rule that was applied to the MC. That is, if in accordance with the current system time, the calculation result of equation (1) equal to 0, the BS determines that adopted the symbol of absolute values. If the result is different from 0, the BS determines that adopted the symbol relative values. For such definitions BS retains the equation (1).

In the case of the symbol of the absolute values of the BS in accordance with table mappings on stage 520 calculates the C/I P-ACNP, and at step 530 stores the received C/I for use in the reception of the symbol relative values and the transmission of packet data.

In the case of the symbol relative values in step 550 BS ODA shall determine, what is this symbol relative values. If the symbol relative value represents the increase in C/I, then at step 560 the BS updates the previously stored value of C/I by increasing one level in accordance with table mappings. If the symbol relative values represents a decrease of C/I, then at step 570 BS updates the previously stored value of C/I by reducing one level in accordance with table mappings. If the symbol relative values represents no change in C/I, BS leaves previously stored C/I without changes.

After determining the C/I P-ACNP BS at step 540 transmits packet data in accordance with this C/I P-Oknp. That is, the BS schedules a transmission packet data and determines transmission parameters based on the C/I P-Oknp.

For example, if the symbol is an absolute value equal to '00101', adopted in the previous slot, and the symbol of the relative values representing the increase in C/I, adopted in the current slot, the BS determines that the C/I corresponding to the current slot is -7,4 dB, which corresponds to '00110' in the table of mappings in figure 4. If the symbol is an absolute value equal to '00101', adopted in the previous slot, and the symbol relative values, representing a decrease of C/I, adopted in the current slot, the BS determines that the C/I corresponding to the current slot is equal to -102 dB, which corresponds to '00100' in the table of mappings in figure 4. If the symbol is an absolute value equal to '00101', adopted in the previous slot, and the symbol relative values, representing no change in C/I, adopted in the current slot, the BS determines that the C/I corresponding to the current slot is -8,8 dB, which corresponds to '00101' in the table of mappings in figure 4.

The value of C/I, calculated in accordance with the symbol for absolute value is updated whenever the accepted symbol relative values, and replaced with the newly calculated value C/I, when is the next symbol of the absolute value.

Due to the fact that the symbol relative values represents three States C/I (increase, no change and decrease) as obtained when performing procedures on 11 and 12 of the comparison of C/I corresponding to the previous slot, with I corresponding to the current slot, the symbol relative values is at least two bits. If the symbol relative values is only two States C/I (increase and decrease), then it can be represented with one bit. In this case, to save power. Although figure 11 and 12 symbol relative value represents the change in the C/I-based levels in accordance with a pre-stored table of mappings, the change in the C/I which may reflect a comparison of C/I in predetermined units, for example, in dB, for a more exact expression for C/I using relative values. Fig is relevant to the present invention a block diagram of the algorithm, illustrating another variant implementation running in MS procedures for the transfer on the BS information about the quality of the forward channel. The generator 210 characters KIC in figure 3 performs the following procedure in MS in each time slot.

According pig on stage 600 MS measures the signal strength, that is, C/I, P-ACNP in the current time slot. At step 610, the result of measuring the C/I is stored for comparison with the C/I P-ACNP corresponding to the next slot. At step 620 by equation (1) MS determines whether to transmit the C/I as the symbol of absolute values or character relative values. If, in accordance with the current system time, the calculation result of equation (1) equal to 0, the MS determines that it should communicate the absolute value of C/I, otherwise, it determines that it should transmit the relative importance of C/I.

If the current time slot for the symbol of absolute value, then at step 630 MS generates a symbol of absolute values representing a C/I in accordance with table mappings.

If the current time slot designed for symbol relative value, then at step 650 MS compares /I P-ACNP, corresponding to the previous slot, with C/I P-ACNP corresponding to the current slot. At step 660 MS determines whether the C/I P-ACNP corresponding to the current slot, a lower C/I P-ACNP corresponding to the previous slot. If C/I P-ACNP corresponding to the current slot, greater than or equal to C/I P-ACNP corresponding to the previous slot, then at step 670 MS forms the symbol of the relative values representing the increase in C/I. for Example, representing an increase in C/I symbol relative values set equal to '1'. If C/I P-ACNP corresponding to the current slot, the smaller C/I P-ACNP corresponding to the previous slot, then at step 680 MS generates a symbol of relative values, representing a decrease of C/I. for Example, representing a decrease of C/I symbol relative values set equal to '0'. The number of bits and the contents of the symbol relative value is determined depending on the type of encoder, the input of which is applied the symbol relative values, as described below.

At step 640, the symbol ICC formed on one stage 630, 670 or 680 is About-Knick. That is, the symbol ICC is fed to the encoder 220 in figure 3 and is transmitted to the BS in accordance with the above procedure.

Fig is relevant to the present invention a block diagram of the algorithm, illustrating another variant implementation of ipanemas in BS admission procedures from MS information about the quality of the forward channel. Block 350 calculate the KIC in figure 5 of the composition of the BS performs this procedure in each time slot.

According pig after taking to the stage 700 symbol ICC in the current time slot at step 710 BS determines whether the symbol ICC symbol of the absolute values or character relative values. If the current slot, which was adopted symbol of the KIC, designed for symbol absolute values, the accepted symbol of the KIC is a symbol of absolute values. If the current slot is designed for symbol relative values, the accepted symbol of the KIC is a symbol of relative values. This definition is carried out in accordance with the same rule that was applied to the MC. That is, if in accordance with the current system time, the calculation result of equation (1) equal to 0, the BS determines that adopted the symbol of absolute values. If the result is different from 0, the BS determines that adopted the symbol relative values. For such definitions BS retains the equation (1).

In the case of the symbol of the absolute values of the BS in accordance with table mappings on stage 720 calculates the C/I P-ACNP, and at step 730 stores the received C/I for use in the reception of the symbol relative values and the transmission of packet data.

In the case of the symbol relative values in step 750 BS ODA shall determine, does this symbol represent the relative values increase With/I or the decrease of C/I. If the symbol relative value represents the increase in C/I, then at step 760 BS updates the previously stored value of C/I by incrementing predetermined unit. If the symbol relative values represents a decrease of C/I, then at step 770 BS updates the previously stored value of C/I by reducing on pre-determined unit of measure. Predetermined unit may be, for example, 1 dB.

After determining the C/I P-ACNP BS at step 740 transmits packet data in accordance with this C/I P-Oknp. That is, the BS schedules a transmission packet data and determines transmission parameters based on the C/I P-Oknp.

For example, if the symbol is an absolute value equal to '00101', adopted in the previous slot, and the symbol of the relative values representing the increase in C/I, adopted in the current slot, the BS determines that the C/I corresponding to the current slot is -7,8 dB, which corresponds to the increase -8,8 dB by 1 dB. If the symbol is an absolute value equal to '00101', adopted in the previous slot, and the symbol relative values, representing a decrease of C/I, adopted in the current slot, the BS determines that the C/I corresponding to the current slot is -9,8 dB, which corresponds to the reduction -8,8 dB by 1 dB.

In accordance with Provillus is new on Fig procedure C/I, corresponding to each slot, is estimated by increasing or decreasing the C/I calculated using a received from the MS symbol absolute values on pre-determined unit of measurement will be accepted until the next character of the absolute values. In this case, the estimate C/I, made in BS may be different from the C/I measured in MILLISECONDS.

Accordingly, as the third alternative implementation of the present invention, illustrated in Fig additionally considers the situation when instead of measuring the C/I P-ACNP in the previous slot to create the character relative values in MILLISECONDS using C/I. For this purpose, the MS estimates the C/I P-ACNP in each slot, using the same algorithm that is used to estimate the C/I in BS, and stores the evaluation of C/I. evaluation of the C/I is compared with the result of measuring C/I P-ACNP in the next slot to form so symbol relative values.

Fig is relevant to the present invention a block diagram of an algorithm illustrating a third option exercise performed in MS procedures for the transfer on the BS information as a direct channel

According pig on stage 800 MS measures the signal strength, that is, C/I, P-ACNP in the current time slot, and at step 810 by equation (1) MS determines whether giving the e C/I as absolute values or relative values. If, in accordance with the current system time, the calculation result of equation (1) equal to 0, the MS determines that it should communicate the absolute value of C/I, otherwise, it determines that it should transmit the relative importance of C/I.

If the current time slot for the symbol of absolute value, then at step 820 MS stores the result of measurement of C/I for use in the formation of the character of the KIC to be transmitted in the next slot. Then at step 830 MS generates a symbol of absolute values representing a C/I in accordance with the table mappings.

If the current time slot designed for symbol relative value, then at step 850 MS compares the previously stored C/I P-Oknp with C/I P-ACNP corresponding to the current slot. If the previous slot was given the symbol of absolute values, the symbol of the absolute value serves as an indicator of the previously stored C/I. If the previous slot was transmitted symbol relative values, the previously stored value of C/I has been updated in accordance with this symbol relative values.

At step 860 MS determines whether the C/I P-ACNP corresponding to the current slot, the smaller the previously stored C/I P-Oknp. If C/I P-ACNP corresponding to the current slot, greater than or equal to the previously stored C/I P-ACNP, MS this is e 870 generates a symbol relative values serves as the indicator that a C/I corresponding to the current slot, was obtained from the evaluation of the C/I of the previous slot, through its increase, and at step 875 updates the previously stored C/I by incrementing predetermined unit. If C/I P-ACNP corresponding to the current slot is less than the previously stored C/I P-ACNP, MS at step 880 forms the symbol of the relative values, which indicates that C/I corresponding to the current slot, was obtained from the evaluation of the C/I of the previous slot, through its reduction, and at step 885 updates the previously stored value of C/I by reducing on pre-determined unit of measure. Between MS and BS unit describes the increase or decrease set in advance, for example, equal to 1 dB. The number of bits and the contents of the symbol relative values determined depending on the type of encoder, the input of which serves a symbol of relative values, as described below.

At step 840, the symbol ICC formed on one stage 830, 870 or 880, passed by On-Knick. That is, the symbol ICC served on the encoder 220 in figure 3 and transmitted to the BS in accordance with the above procedure.

The reception symbol ICC perform the same way on Fig, and thus, its detailed description is not given here. Not bhodemon be noted, what MS and BS use the same unit of increase or decrease.

In accordance with a third embodiment of the present invention the difference between the C/I measured in MS, and C/I calculated the base stations can be minimized. If the symbols relative values passed in (n-1)-th and n-th slots, the symbol of the relative values of the n-th slot is the result of comparing the C/I measured in the n-th slot, the C/I measured in the (n-1)-th slot. If the C/I measured BS (n-1)-th slot, different from the C/I measured in MS (n-1)-th slot, it follows that the n-th slot of BS and MS measurements get different values of C/I.

Next, a second variant implementation, illustrated in Fig described in conjunction with the third embodiment, illustrated in Fig, in the context of a specific example. In this case, it is assumed that the measured MS values of C/I P-ACNP corresponding to the slots of the n-th to (n+3)-th equal to 1, 1.1, 1.2 and 1.3 dB, respectively, and the symbol of the absolute value of the transfer in the n-th slot, then (n+1)-th, (n+2)-th and (n+3)-th transmit slots symbols relative values.

In the second embodiment, after the n-th slot of the symbol of absolute values corresponding to 1 dB, (n+1)-th, (n+2)-th and (n+3)-th transmit slots symbols relative values representing the increase in C/I. Then BS is canivet values of C/I P-ACNP, the corresponding (n+1)-th, (n+2)-th and (n+3)-th slot, as 2(=1+1), 3(=2+1) and 4(=3+1) dB, respectively, as illustrated in the following table 1.

(Table 1)
nn+1n+2n+3
The measurement result is C/I in MS1 dB1,1 dB1,2 dB1,3 dB
Symbol ICC1 dBIncrease (+)Increase (+)Increase (+)
Evaluation of C/I in BS1 dB2 dB3 dB4 dB
The difference0 dB+0,9 dB+1,8 dB+2,7 dB

As follows from table 1, the difference of values of C/I increases over time. Thus, in the (n+3)-th slot is a very big mistake, equal to 2.7 dB.

In the third embodiment, the n-th slot transmit the symbol of absolute values corresponding to 1 dB. Then (n+1)-th slot, the MS transmits to the BS symbol relative values representing the increase in C/I, and BS and MS estimate the C/I P-ACNP as 2 dB. In the (n+2)-th slot, the MS compares the measurement result C/I, equal to 1.2 dB with the assessment of the C/I is equal to 2 dB, and transmits the symbol relative values of t is engaged in the decrease of C/I. Then MS and BS estimate the C/I P-ACNP as 1 dB. In the (n+3)-th slot, the MS compares the measurement result C/I, equal to 1.3 dB with the assessment of the C/I is equal to 1 dB, and transmits the symbol relative values representing the increase in C/I. BS and MS estimate the C/I P-ACNP as 2 dB. In the following table 2 lists the results of measurements of the C/I estimate the C/I and their difference.

(Table 2)
nn+1n+2n+3
The measurement result is C/I in MS1 dB1,1 dB1,2 dB1,3 dB
Symbol ICC1 dBIncrease (+)Decrease (-)Increase (+)
Evaluation of C/I in BS1 dB2 dB1 dB4 dB
The difference0 dB+0,9 dB-0,2 dB+0,7 dB

As follows from table 2, resulting in (n+3)-th slot is relatively small error, equal to 0.7 dB.

Encoding symbol ICC

The symbol for absolute value is C/I P-ACNP, measured in MS, multiple levels, while the symbol relative values is two or three States C/I. This means that, compared with the forehand is her symbol of absolute values, given the character of the relative values of the reduced volume of the transmitted information. Using this property, you can improve the performance of a block code encoder, designed to encode a symbol of relative values.

Below is a description of three embodiments of the encoding symbol relative values performed so that the transmission of the symbol relative values increases the efficiency of the code block.

Fig illustrates a table of mappings, which lists the characters of the KIC, which is the input of the encoder, shown in the code sequence, which is the output of the encoder. It is assumed that the code rate of the encoder is equal to 5/12 in accordance with known circuit block coding. As can be seen from the illustration on Fig, in response to the input 5-bit symbol (A4, A3, A2, A1, A0) KIC encoder generates a 12-bit code sequence. Although the following description is given in the context of the encoder having input and output characteristics that match the illustration on Fig, under certain modifications of the present invention is also applicable in the case of the encoder with a different code rate.

In the first embodiment, the encoding of the symbol relative values of the symbol relative values contains the same number of bits as the symbol of absolute values, so that they can to derivati the same encoder. In this case, the input symbols of the encoder having the maximum difference between them, after encoding are used as symbols relative values representing the increase in C/I or reduction of C/I.

In response to the character input relative values of the encoder with a code rate of 5/12 issues '000000000000' and '111111111111'depending on what these symbols are relative values. Due to the large differences between the code sequences of these symbols relative values easily distinguish when decoding. According pig to obtain a code sequence characters '00000' and '10000' relative values fed to the encoder input.

The symbol ′00000′ relative values is an indicator of increasing C/I, that is, an indication that C/I P-ACNP corresponding to the current slot, greater than or equal to C/I P-ACNP corresponding to the previous slot, and the character ′10000′relative values is an indicator of decreasing C/I, that is, an indication that C/I P-ACNP corresponding to the current slot, With less/I P-ACNP corresponding to the previous slot, or Vice versa. Between MS and BS is set in advance, that represent characters ′00000′ and ′10000′ relative values.

The characters relative values applied to the input of the encoder with a code rate of 512, and their code sequences are listed in table 3.

(Table 3)
Information about the relative valueSymbol input (A4, A3, A2, A1,A0)Code sequence
Increase ('0')'00000''000000000000'
The decrease in ('1')'10000''111111111111'

In table 3 the values of the input symbols corresponding to the information about the relative value can be changed through negotiation between the BS and MS. Important is the transfer code sequences ′000000000000′ and '111111111111' as symbols relative values.

In table 3 GSZ A4 symbol (A4, A3, A2, A1, A0) of the KIC for the other services do not use. However, if the GSZ A4 is used for other services, the characters relative values applied to the input of the encoder with a code rate of 5/12, is determined as follows depending on what they represent.

(Table 4)
Information about the relative valueSymbol input (A4, A3, A2, A1,A0)Code sequence
Increase ('0')/

Other service ('0')
'0000' '000000000000'
The decrease in ('1')/

Other service ('0')
'00100''011100001111'
Increase ('0')/

Other service ('1')
'01000''000011111111'
The decrease in ('1')/

Other service ('1')
'01100''011111110000'

As follows from table 4, when the bit A4 is used for other services, a 5-bit input character includes semantic information relative values and other services. Use'00000', '00100' '01000' and '01100' as an input characters optimizes the characteristics of the decoding, as between the code sequences are large differences. As stated above, what are the input symbols can be changed through negotiation between the MS and the BS, and important is the transmission of the code characters relative values using code sequences'000000000000', '011100001111', '000011111111' and '011111110000'.

Below with reference to figure 3 describes the encoding of the symbol of absolute values and character relative values using the encoder 220 with code rate 5/12 in accordance with the present invention.

According to figure 3, the generator 210 characters KIC takes measured in the current slot With/I P-ACNP and by equation (1) determined by the t, should I put in the current slot symbol relative value or symbol of absolute values. If, in accordance with the current system time, the calculation result of equation (1) equal to 0, the MS determines that it should transmit the symbol of the absolute value, otherwise, it determines that it should transmit the symbol relative values.

In accordance with the result of this determination, the generator 210 characters KIC forms the symbol of the absolute value representing a C/I corresponding to the current slot, or symbol relative value that serves as an indicator of the result of comparison of the C/I corresponding to the current slot with the C/I corresponding to the previous slot.

The symbol relative value represents the increase in C/I or the decrease of C/I. In the alternative, the symbol relative value represents the increase in C/I, no change in C/I or the decrease of C/I. that is, using symbols relative values can be expressed in two States C/I or three States C/I. In the case when the GSZ A4 is used for other services, the characters relative values form, taking into account the fact that the indicator what is the GSZ A4.

If the current slot is allocated to the transmission symbol of the absolute value generator 210 characters KIC issues on the encoder 220 5-bit symbol of the absolute value representing a C/I, corresponding to the current slot.

On the other hand, if the current slot allocated for transmission of the symbol relative values and GSZ A4 is not used for other services, the generator 210 characters KIC selects the corresponding symbol ICC 5-bit characters KIC ('00000' and '10000')listed in table 3. If C/I corresponding to the current slot, greater than or equal to C/I corresponding to the previous slot, print the character '00000' the KIC that serves as an indicator of the increase in C/I. If C/I corresponding to the current slot, the smaller C/I corresponding to the previous slot, print the character '10000' KIC that serves as an indicator of the reduction of C/I.

If the current slot allocated for transmission of the symbol relative values and GSZ A4 is used for other services, the generator 210 characters KIC selects the corresponding symbol ICC 5-bit characters KIC('00000', '00100' '01000' and '01100')listed in table 4. If C/I corresponding to the current slot is greater than or equal To/I corresponding to the previous slot, print the character '00000' or '01000' the KIC that serves as an indicator of the increase in C/I. If C/I corresponding to the current slot is less than the C/I corresponding to the previous slot, print the character '00100' or '01100' the KIC that serves as an indicator of the reduction of C/I.

The encoder 220 displays taken from generator 210 characters KIC symbol ICC in the appropriate daisoudou sequence according to the rule display Fig. Binary code sequence serves to block 240 masking by Walsh and after modulation transmit to the BS.

BS interprets the symbol ICC adopted from MS for On-Knick. If the symbol ICC is a symbol of relative values and GSZ A4 is not used for other services, the BS interprets this symbol relative values in accordance with table 3. On the other hand, if the symbol ICC is a symbol of relative values and GSZ A4 is used for other services, the BS interprets this symbol relative values in accordance with table 4. The interpretation of the symbol ICC performed through procedures pig or 14.

In the second embodiment, the character encoding of the relative values use two different encoder to encode a symbol of absolute values and character relative values, which differ by the number of bits. In this case, the symbol of the absolute value of the encoding by the encoder with a code rate of 5/12, and the symbol of the relative values encode encoder with code rate n/12 (n not equal to 5).

For example, the code rate of the encoder, designed for symbol relative value equal to 1/12. In response to the input one-bit symbol relative values of the encoder generates a 12-bit sequence '000000000000' or '111111111111'. The relationship between the input of the encoder and the code is the sequence after encoding with the speed of 1/12 shown in table 5.

(Table 5)
Information about the relative valueSymbol input (A0)Code sequence
Increase ('0 )'0''000000000000'
The decrease in ('1')'1''111111111111'

If GSZ A4 is used for other services, to encode the symbol relative values use an encoder with a code rate of 2/12 having input and output characteristics are shown in table 4.

Fig is relevant to the present invention a block diagram of the encoder, using different encoders for separate encoding of the symbol of absolute values and character relative values. The generator 210 characters and the encoder 220 is illustrated in figure 3 Fig more detail except that for the separate encoding of the symbol of absolute values and character relative values use two encoder 920 and 930 with different code rates. In this context, the following example describes the case when the code rate of the encoder 920 is equal to 5/12, however, the code rate can be varied in accordance with the number of bits expressed by the symbol of absolute values.

The agreement is but Fig generator 910 characters KIC takes in the current slot With/I P-ACNP and by equation (1) determines whether to transmit in the current slot is the symbol of absolute values or symbol relative values. If, in accordance with the current system time, the calculation result of equation (1) equal to 0, the MS determines that it should transmit the symbol of absolute values/I, otherwise, it determines that it should transmit the symbol of the relative values of C/I.

In accordance with the result of this determination, the generator 910 characters KIC forms the symbol of the absolute value representing a C/I corresponding to this slot, or symbol relative value that serves as an indicator of the result of comparison of the C/I corresponding to the current slot with the C/I corresponding to the previous slot.

The symbol relative value represents the increase in C/I or the decrease of C/I. In the alternative, the symbol relative value represents the increase in C/I, no change in C/I or the decrease of C/I. that is, using symbols relative values, each of which contains n bits (n is not equal to 5), one can Express the two States C/I or three States C/I. In the case when the GSZ A4 symbol ICC used for other services, the characters relative values form, as indicated by this other service.

If the current slot is the symbol of the absolute value generator 910 characters the QC issues on the first encoder 920 with a code rate of 5/12 5-bit symbol absolute values, representing a C/I corresponding to the current slot.

If the current slot is designed for symbol relative values, the generator 910 symbol ICC issues an n-bit (1-bit or 2-bit) character relative values for the second coder 930 having a code rate n/12. If the symbol relative values represents a 1 bit, the code rate of the second encoder 930 equal to 1/12, and if the symbol relative values represents 2 bits, the code rate of the second encoder 930 equal to 2/12.

If GSZ A4 symbol relative values are not used for other services, the generator 910 symbol ICC issues a corresponding 1-bit symbol '0' or '1' KIC, are shown in table 5, the second encoder 930 with a code rate of 1/12. If C/I corresponding to the current slot, greater than or equal to C/I corresponding to the previous slot, print the character '0' KIC, representing an increase in C/I. If C/I corresponding to the current slot, the smaller C/I corresponding to the previous slot, print the character '1' KIC, representing a decrease of C/I. If the GSZ A4 symbol relative values are used for other services, the generator 910 symbol ICC issued a second encoder 930 with code rate 2/12 corresponding 2-bit symbol'00', '01', '10' or '11' KIC, are given in table 4. If C/I corresponding to the current slot, greater than or equal to C/I corresponding to the previous slot, print symbol '00' or '01' KIC, representing an increase in C/I. If C/I corresponding to the current slot, the smaller C/I corresponding to the previous slot, print '10' or '11' KIC, representing a decrease of C/I.

The second encoder 930 displays taken from the generator 910 characters KIC n-bit symbol relative values to the corresponding binary code sequence according to the rule display Fig. The first encoder 920 displays taken from the generator 910 characters KIC symbol of absolute values in the corresponding binary code sequence according to the rule display Fig. These binary code sequence serves to block 240 masking by Walsh and after modulation transmit to the BS.

Despite the fact that in accordance with the illustration on Fig to encode a symbol of absolute values and character relative values in MS use different encoders, the characters of KIC can be coded by one coder in BS. This is because the code sequence, resulting from the symbol of absolute values and character relative values contain the same number of bits. According to figure 5, the decoder 340 receives the 12-bit code sequence and outputs a 5-bit symbol ICC. If the current slot allocated for transmission of the symbol of absolute values, the symbol ICC performance is made by the C/I. If the current slot allocated for transmission of the symbol relative values, the symbol ICC represents the increase or decrease of C/I. Consequently, the block 350 calculations characters ICC interprets the symbol ICC in accordance with the selection state of the current Ares symbol for absolute value or symbol relative values.

If the received symbol ICC is a symbol of relative values and GSZ A4 this symbol relative values are not used for other services, block 350 calculations characters ICC interprets this symbol ICC in accordance with table 5. On the other hand, if the received symbol ICC is a symbol of relative values and use GSZ A4 this symbol relative value, unit 350 calculations characters ICC interprets this symbol relative values in accordance with table 4. The interpretation of the symbol ICC perform in accordance with the procedure pig or pig.

In the third embodiment, the encoding of the symbol relative values to encode a symbol of absolute values and character relative values use the same encoder, and during transmission of the symbol relative values of specific bits applied to the input of the encoder is set to the off state. In the off state at the encoder is not available when gralow, so that the encoder does not affect the formation of a code sequence. The relationship between the input symbols and output code sequence of the encoder with a code rate of 5/12 shown in table 6.

(Table 6)
Information about the relative valueSymbol input (A4, A3, A2, A1, A0)KICCode sequence
Increase ('0')'0', 'off', 'off', 'off', 'off''000000000000'
The decrease in ('1')'1', 'off', 'off', 'off', 'off''111111111111'

Table 6 shows the symbols relative values when the GSZ A4 is not used for other services, i.e. GSZ A4 determines what is 5-bit symbol relative values.

If GSZ A4 is used for other services, the relationship between the input symbols and output code sequence of the encoder with a code rate of 5/12 shown in table 7.

(Table 7)
Information about the relative valueSymbol input (A4,A3,A2,A1,A0)KIC
Increase ('0')/

Other service ('0')
'off', '0', '0', 'off', 'off'
The decrease in ('1')/

Other service ('0')
'off', '1', '0', 'off', 'off'
Increase ('0')/

Other service ('1')
'off', '0', '1', 'off', 'off'
The decrease in ('1')/

Other service ('1')
'off', '1', '1', 'off', 'off'

According to table 7 bit A3 of the 5-bit symbol ICC determines that represents the symbol relative values, and the bit A2 of the 5-bit symbol ICC serves as an indicator that represents the bit A4. Using symbols KIC listed in table 6 and table 7, optimizes the characteristics of the decoding, because the differences between the code sequence obtained by encoding symbols KIC maximum.

The mapping is shown in table 6 and table 7 characters (A4, A3, A2, A1, A0) of the IRC and what they represent, set between MS and BS in advance.

In accordance with the present invention to transmit information about the quality of the forward link symbol of absolute values take at least one predetermined slot, and the symbols of the relative values in the remaining slots. Consequently, reduces the amount transmitted through a return line connection service information, and decrease the EOI is a lot of interference, resulting in increased throughput for reverse traffic. Moreover, the symbol relative value, occupying a smaller information volume compared to a symbol of the absolute values of the code so that the characteristics of the decoding be the best.

Although the present invention was practically presented and described with reference to certain preferred variations in its implementation, for specialists in the art it is obvious that various changes in form and details may be made without deviating from the essence and scope of the invention as defined by the claims.

1. The way of measuring the quality of a received from the base station forward link in a mobile station and transmitting to the base station reports the result of quality measurement, including the steps of measuring the signal power of the direct channel into multiple time slots, the transmission symbol of the absolute value of the at least one time slot selected from the set of time slots of the reverse channel, and the symbol of the absolute value represents the signal quality of the downlink channel, the transmission of the symbol relative values, at least one of the remaining time slots of the reverse channel, and each remaining time slot t is to be a temporary slot of the reverse channel, different from at least one of a time slot selected for transmission of the symbol of absolute values, and this symbol relative values represents a change relative to the capacity of the forward channel signal in the previous time slot.

2. The method according to claim 1, characterized in that the symbol relative values are passed with a power level lower than the power level of the transmission symbol of the absolute value.

3. The method according to claim 1, characterized in that the symbol relative value has fewer bits than the symbol of absolute values.

4. The method according to claim 1, characterized in that the symbol relative value represents the increase or decrease in the signal strength of the direct channel, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the capacity of the forward channel signal in the previous time slot.

5. The method according to claim 1, characterized in that the symbol relative values represents an increase, no change or decrease the signal strength of the direct channel, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the capacity of the forward channel signal in the previous time slot.

6. The method according to claim 1, characterized in that the time the lot, chosen to transfer the character of the absolute values is different from the time slots allocated for transmission of the symbols of absolute values from other mobile stations.

7. The method according to claim 1, characterized in that the selected time slot satisfies the relationship

(T-N X)mod INT=0,

where mod denotes the operation module;

T is the system time, measured in slots;

INT - transmission interval, over which is passed a symbol of the absolute values;

N is a parameter indicating the selected time slot for transmission in the transmission interval INT symbol absolute values;

X - option, uniquely defined for the mobile station.

8. The method according to claim 1, characterized in that the symbol of the absolute values passed in two consecutive time slots.

9. The method according to claim 1, characterized in that the phase transfer of the symbol relative values includes the steps of finding the power level of the signal measured in the above-mentioned one of the remaining time slots, table maps, showing the many preset power levels of the signal into symbols, each of which contains a predetermined number of bits of symbol formation relative values representing the result of comparison of the power level signal corresponding to the aforementioned one is mu of the remaining time slots, with the power level of the signal corresponding to the previous time slot, the encoding of the symbol relative values before sending.

10. The method according to claim 1, characterized in that the phase transfer of the symbol relative values includes the steps of forming the symbol relative values representing the change of the signal strength of the direct channel relative to the power of the forward channel signal in the previous time slot, and coding of the symbol relative values before sending.

11. The method according to claim 10, characterized in that the step of encoding the symbol relative values encode one of the many pre-defined code sequences, characterized by the maximum difference between them.

12. The method according to claim 11, wherein one of the code sequences contains only zeros, and the other code sequence contains only units.

13. The method according to claim 1, characterized in that the phase transfer symbol of absolute values includes the steps of forming the symbol of absolute values representing the signal quality of the downlink channel, measured in the selected time slot, according to the table of the mappings maps a set of predefined power levels of the signal into symbols, each of which contains a predetermined number of bits, and encoding symbol and the zero values before sending.

14. The way of measuring the quality of a received from the base station forward link in a mobile station and transmitting to the base station reports the result of quality measurement, including the steps of measuring the signal power of the direct channel into multiple time slots of the transmission symbol of the absolute value of the at least one time slot selected from the set of time slots of the reverse channel, and the symbol of the absolute value represents the measured signal quality of the downlink channel, and save the measured signal strength of the direct channel, transmission of the symbol relative values of at least one remaining time slot of the reverse channel, and each remaining time slot is temporary the slot of the reverse channel that is different from at least one of a time slot selected for transmission of the symbol of absolute values, and this symbol relative values represents a change relative to the stored power of the forward channel signal in the previous time slot, change the value of signal power of the previous time slot in accordance with the symbol relative values, and save the modified value of the power signal.

15. The method according to 14, characterized in that the symbol relative values of transmit power transfer, less the th transmit power of the symbol of absolute values.

16. The method according to 14, characterized in that the symbol relative value has fewer bits than the symbol of absolute values.

17. The method according to 14, characterized in that the symbol relative value represents the increase or decrease in the signal strength of the direct channel, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the stored power of the forward channel signal in the previous time slot.

18. The method according to 14, characterized in that the symbol relative values represents an increase, no change or decrease the signal strength of the direct channel, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the stored power of the forward channel signal in the previous time slot.

19. The method according to 14, characterized in that the time slot selected for transmission of the symbol of absolute values, is different from the time slots allocated for transmission of the symbols of absolute values from other mobile stations.

20. The method according to 14, wherein the selected time slot satisfies the relationship

(T-N X)mod INT=0,

where mod denotes the operation module;

T is the system time, measured in slots;

INT - transmission interval, over which is passed a symbol of the absolute values;

N is a parameter indicating the selected time slot for transmission in the transmission interval INT symbol absolute values;

X - option, uniquely defined for the mobile station.

21. The method according to 14, characterized in that the symbol of the absolute values passed in two consecutive time slots.

22. The method according to 14, characterized in that the phase transfer of the symbol relative values includes the steps of forming the symbol relative values representing the result of comparison of the signal power referred to one of the remaining time slots with stored power level of the signal of the previous time slot, the encoding of the symbol relative values before transmission, increasing or decreasing the stored signal power of the previous time slot on the predetermined unit in accordance with what is the symbol relative values.

23. The method according to item 22, wherein the predetermined unit set between the base station and mobile station in advance.

24. The method according to item 22, wherein the step of encoding the symbol relative values encode one of the many pre-defined code sequences, aracteristic maximum difference between them.

25. The method according to paragraph 24, wherein one of the code sequences contains only zeros, and the other code sequence contains only units.

26. The method according to 14, characterized in that the phase transfer symbol of absolute values includes the steps of forming the symbol of absolute values representing the measured signal quality of the downlink channel in the selected time slot, according to the table of the mappings maps a set of predefined power levels of the signal into symbols, each of which contains a predetermined number of bits, the encoding symbol absolute values before sending, and saving power signal corresponding to the symbol of absolute values.

27. The way of reception from the mobile station information about the quality of the forward channel in a base station, comprising the steps

(1) reception of a symbol of the absolute value of at least one time slot selected from the set of time slots of the reverse channel;

(2) calculate the signal power corresponding to the selected time slot, according to the symbol of absolute values;

(3) reception of a symbol relative values, at least one of the remaining time slots of the reverse channel, and each remaining time slot is a time slot of the reverse channel is, different, at least one time slot selected for transmission symbol absolute values;

(4) changes in the power signal of the previous time slot in accordance with the symbol relative values and calculating the signal power referred to one of the remaining time slots.

28. The method according to any one of claims 1, 14, 27, characterized in that the time slot is characterized by the reverse displacement of the frame in each mobile station.

29. The method according to any one of claims 1, 14, 27, characterized in that each mobile station has a different reverse bias frame.

30. The method according to item 27, wherein the selected time slot satisfies the relationship

(T-N X)mod INT=0,

where mod denotes the operation module;

T is the system time, measured in slots;

INT - transmission interval, over which is passed a symbol of the absolute values;

N is a parameter indicating the selected time slot for transmission in the transmission interval INT symbol absolute values;

X - option, uniquely defined for the mobile station.

31. The method according to item 27, wherein in the step (2) detects the power level of the signal corresponding to the symbol of absolute values, in the table of mappings in which many preset power levels signal the Ala are shown in symbols, each of which contains a predetermined number of bits.

32. The method according to item 27, wherein in the step (4) the signal strength of the previous time slot increase or decrease by one level in accordance with what is the symbol relative values according to table mappings, in which the many preset power levels of the signal are displayed in characters, each of which contains a predetermined number of bits.

33. The method according to item 27, wherein in the step (4) the signal strength of the previous time slot is enlarged or reduced at a predetermined unit in accordance with what is the symbol relative values.

34. The method according to p characterized in that the predetermined unit set between the base station and mobile station in advance.

35. Device for measuring the quality of a received from the base station forward link in a mobile station and transmitting messages to the base station of the measurement result of the quality, containing a character generator for generating character of the absolute value of at least one time slot selected from the set of time slots of the reverse channel, and the formation of the symbol relative values, at least one of the remaining time slots on the military channel, each remaining time slot is a time slot of the reverse channel that is different from at least one of a time slot selected for transmission of the symbol of absolute values, and the symbol of the absolute value represents the signal strength of the forward channel, and the symbol of the relative values represents a change relative to the capacity of the forward channel signal in the previous time slot, the block encoding to encode a symbol of absolute values and character relative values and a transmitter for transmitting the symbol of the absolute values of at least one selected time slot, and transmitting the symbol relative values of at least one remaining time slot.

36. The device according to p, wherein the transmitter transmits the encoded symbol relative values with a power level lower than the power level of transmission of the encoded symbol absolute values.

37. The device according to p, characterized in that the time slot selected for transmission of the symbol of absolute values, is different from the time slots allocated for transmission of the symbols of absolute values from other mobile stations.

38. The device according to p, wherein the selected time slot satisfies the relationship

(T-K-X)mod INT=0,

g is e mod denotes the operation module;

T is the system time, measured in slots;

INT - transmission interval, over which is passed a symbol of the absolute values;

N is a parameter indicating the selected time slot for transmission in the transmission interval INT symbol absolute values;

X - option, uniquely defined for the mobile station.

39. The device according to p, characterized in that the symbol for absolute value is transmitted in two consecutive time slots.

40. The device according to p, wherein the character generator generates the symbol relative values representing the change of the power level of the signal measured in the above-mentioned at least one of the remaining time slots, with the power level of the signal of the previous time slot, according to the table of the mappings maps a set of predefined power levels of the signal into symbols, each of which contains a predetermined number of bits.

41. The device according to p, wherein the character generator generates the symbol relative values representing the result of comparison of the signal power is mentioned, at least one of the remaining time slots, with the power level of the signal of the previous time slot.

42. The device according to p, characterized in that the symbol meant relative who I represents the increase or decrease in signal power, at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the power level of the signal of the previous time slot.

43. The device according to p, characterized in that the symbol relative values represents an increase, no change or decrease in signal power at least one time slot corresponding to the aforementioned one of the remaining time slots, relative to the power level of the signal of the previous time layer.

44. The device according to p, wherein the character generator generates a symbol of absolute values representing measured in the selected time slot signal quality of the downlink channel according to table mappings that maps a set of predefined power levels of the signal into symbols, each of which contains a predetermined number of bits.

45. The device according to p, wherein the character generator contains a first device for forming the symbol of absolute values representing measured in the selected time slot signal quality of the downlink channel, and to save the measured power signal, a second device for the formation of the symbol relative values representing the change relative to the stored signal strength of Pramogu the channel in the previous time slot, to update the value of signal power of the previous time slot according to what is the symbol relative values, and to save the updated values of signal power.

46. The device according to item 45, wherein the first device generates a symbol of absolute values representing measured in the selected time slot signal quality of the downlink channel according to table mappings that maps a set of predefined power levels of the signal into symbols, each of which contains a predetermined number of bits, and stores the signal.

47. The device according to item 45, wherein the second device generates a symbol relative values representing the result of comparison of the signal power is mentioned, at least one of the remaining time slots with the power level of the signal of the previous time slot and increments or decrements the stored signal strength of the previous time slot on the predetermined unit in accordance with what is the symbol relative values.

48. The device according to p, characterized in that the coding block includes an encoder for encoding the symbol of absolute values and character relative values with the same code rate.

49. The device according to p different is seesa fact, the encoder encodes the symbol relative values in one of the many pre-defined code sequences, characterized by the maximum difference between them.

50. The device according to 49, wherein the code sequence contains only zeros or only one.

51. The device according to p, characterized in that the coding block includes: a first encoder to encode a symbol of the absolute value from the first code rate in accordance with the number of bits of the symbol of the absolute values of the second encoder for encoding the symbol relative values with the second code rate in accordance with the number of bits of the symbol relative values.

52. The device according to 51, wherein the number of bits of the symbol relative value is less than the number of bits of the symbol of absolute values.

53. Device for receiving from the mobile station information as a direct channel to the base station containing a receiver for receiving symbol of absolute value at least during one time slot selected from the set of time slots of the reverse channel, and reception of a symbol relative values, at least one of the remaining time slots of the reverse channel, and each remaining time slot is a time slot of the reverse channel, otlichalis is, at least one time slot selected for transmission of the symbol of absolute values, the computing unit symbols to calculate the signal power of the selected time slot according to the symbol of absolute values and calculating the signal power of the mentioned at least one remaining time slot by changing the value of signal power of the previous time slot in accordance with the symbol relative values.

54. The device according to item 53, wherein the selected time slot satisfies the relationship

(T-N X)mod INT=0,

where mod denotes the operation module;

T is the system time, measured in slots;

INT - transmission interval, over which is passed a symbol of the absolute values;

N is a parameter indicating the selected time slot for transmission in the transmission interval INT symbol absolute values;

X - option, uniquely defined for the mobile station.

55. The device according to item 53, wherein the computing unit of the character searches for the power level of the signal corresponding to the symbol of absolute values, in the table of mappings in which many preset power levels of the signal are displayed in characters, each of which contains a predetermined number of bits.

56. Elimination of the ETS on item 53, characterized in that the computing unit symbols increases or decreases the signal strength of the previous time slot one level in accordance with what is the symbol relative values according to table mappings, in which the many preset power levels of the signal are displayed in characters, each of which contains a predetermined number of bits.

57. The device according to item 53, wherein the computing unit symbols increases or decreases the signal strength of the previous time slot on the predetermined unit in accordance with what is the symbol relative values.

58. The device according to 57, wherein the predetermined unit set between the base station and mobile station in advance.

59. Device according to any one of p, 53, characterized in that the time slot is characterized by the reverse displacement of the frame in each mobile station.

60. Device according to any one of p, 53, characterized in that each mobile station has a different reverse bias frame.

Priority items:

31.08.2001 - according to claims 1-10, 13, 26-34, 35-44, 48, 53-56;

25.10.2001 - PP-23, 45-47;

30.11.2001 - 11-12, 24-25, 49-52.



 

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