CN101309096A - Power control command transmitting/receiving method and apparatus - Google Patents

Abstract

The invention discloses a power control command transmitting and receiving method and the device thereof. The corresponding relation between a sequence number of a being transmitted or received power control command and a sequence number of a controlled time slot and code combined transmission channel pair can be obtained through a pre-generated search table of the sequence number of the time slot and code combined transmission channel pair or through an updating of the search table at the start time of each frame, so that to transmit the power control command in the time slot which carries the power control command, or to adjust the transmitting power level of the time slot and code combined transmission channel pair according to the obtained corresponding relation to realize the transmitting or receiving of the power control command. The realization of the method and device of the invention are simple and have little calculation, thus increase the processing efficiency of the transmitting or receiving of the power control command.

Description

Power control command transmitting send/method of reseptance and device

Technical field

The present invention relates to the transmission/method of reseptance of power control command in a kind of TD-SCDMA system, the invention still further relates to the transmission/receiving system of power control command in a kind of TD-SCDMA system.

Background technology

TD-SCDMA (TD SDMA, Time Division-Synchronous CodeDivision Multiple Access) be 3-G (Generation Three mobile communication system) (3G), with respect to second generation mobile communication system (2G), the TD-SCDMA system can provide higher service transmission rate, for the user provides abundanter service.

Be illustrated in figure 1 as the frame structure schematic diagram in the TD-SCDMA system, the spreading rate of TD-SCDMA system is 1.28Mcps, the length of each radio frames (Radio Frame) is 10ms, and is divided into two subframes (Sub frame) that structure is identical, and the length of each subframe is 5ms.Wherein, each subframe comprises that (TS0～TS6), the last transmission of each business time-slot is called a burst (Burst) to 7 business time-slots.

Because cdma system is the self-interference system, therefore in order to guarantee communication service quality, reduce the interference of system simultaneously as far as possible, existing TD-SCDMA system adopt the closed power control technology to overcome usually or the near-far interference that as far as possible exists in the reduction system and shadow effect etc. to the influence of communication service.

The closed power controlled function is finished jointly by exterior ring power control (OLPC) and inner loop power control (ILPC) algorithm.The basic principle of exterior ring power control is: by quality of service (as the Block Error Rate or the error rate) and the user's requested service quality (as the desired value of the Block Error Rate or the error rate) that compares actual estimated or monitor, determine the signal interference ratio desired value (SIRtarget) of inner loop power control.The basic principle of inner loop power control is: signal interference ratio (SIRest) and signal interference ratio desired value (SIRtarget) by relatively actual measurement are come definite power control command value that sends, and improve or reduce transmitting power with the indication opposite end.Exterior ring power control and inner loop power control cooperating make actual communication quality satisfy the service quality of user expectation.

Particularly, for descending inner-loop power control (DL ILPC), UE is to the NodeB transmission power control commands, be referred to as TPC (transmitting power control herein, Transmitter Power Control) order, this order is used for the transmitting power of rapid adjustment base station (NodeB) down channel, so that the signal interference ratio estimated value (SIRest) that user terminal (UE) receives is near signal interference ratio desired value (SIRtarget).

Similarly, for up inner-loop power control (UL ILPC), NodeB sends the TPC order to UE, and UE receives the transmitting power of back adjustment up channel, so that the SIRest that NodeB receives is near desired value SIRtarget.

In the TD-SCDMA system, the TPC order sends on dedicated channel, and TPC order back adjustment channel emission power is received in the opposite end.The TPC order transmission cycle is 5ms, i.e. a subframe.The particular location of TPC in time slot as shown in Figure 2, TPC sends in the data field (Data field) of professional Burst part.

To UE, network side is by air interface (being the UU interface) which ascending time slot of signaling UE and descending time slot carrying TPC order, and this has relevant description in 3GPP protocol specification 25.331.

When communication service is set up, the quality of service requirement of network based business, for the higher business of speed, may distribute a plurality of uplink/downlink sub-carriers time slots, in this case, in order to realize the transmitting power control to different time-gap, 3GPP protocol specification 25.225 has defined transmission and the reception mechanism of TPC, below we are example with descending inner-loop power control, simply introduce the transmit mechanism of TPC.

Corresponding descending time slot of each TPC symbol that UE sends and code combination transmission channel are to (timeslot and CCTrCH pair), and promptly each descending time slot and code combination transmission channel are to all being controlled by the TPC of correspondence order.Descending time slot and right specifically being defined as of code combination transmission channel: distribute to a descending time slot and a downstream code-group on this time slot and close transmission channel (DLCCTrCH).

Calculate for convenience TPC and time slot and code combination transmission channel between corresponding relation, at first all descending time slots and code combination transmission channel are numbered respectively sequence and TPC command sequence, concrete coding rule is referring to the description of agreement 25.225.Simply, suppose descending time slot and code combination transmission channel to M altogether, then the right sequence number of descending time slot and code combination transmission channel number is 0 successively ..., M-1; Suppose that the TPC that UE sends orders N altogether, then the TPC sequence number is followed successively by 0 ..., N-1.

Below the corresponding descending time slot of the formula TPC order that is used for determining up transmission and its control and the code combination transmission channel between relation:

DL _pos＝(SFN′·N _{DL_TPCsymbols}+TPCU _Lpos+((SFN′·N _{DL_TPCsymbols}+TPCU _Lpos)div(N _DLslot)))mod(N _DLslot)

Wherein, DLpos refers to be subjected to the descending time slot and the right sequence number of code combination transmission channel of the TPC control that UE sends; SFN ' refers to system's subframe numbers, and system frame number SFN=SFN '/2 for dividing exactly, round downwards here.N _{DL_TPCsymbols}Refer to the TPC total number of symbols that UE sends in the subframe; TPC _ULposRefer to the sequence number of the TPC to be sent of UE in the subframe; N _DLslotRefer to descending time slot and the right sum of code combination transmission channel in the subframe.

Formula above analyzing, for different SFN ', the right corresponding relation of the descending time slot of TPC order and its control and code combination transmission channel is periodically along with the variation of SFN ' and the cycle is

Subframe.Wherein, gcd () is for asking the function of greatest common divisor (greatest commondivisor), so we can calculate a concordance list, finish TPC order and descending time slot and code combination transmission channel between mapping.

For instance, TPC command sequence TPC to be sent _ULposAnd the corresponding relation between the DL time slot of control and the right sequence number DLpos of code combination transmission channel as shown in Figure 3, supposes in the subframe descending time slot and code combination transmission channel in the figure to ading up to 3, i.e. N _DLslotThe TPC that UE sends in=3, subframe adds up to 2, i.e. N _{DL_TPCsymbols}=2.

For the reception of TPC, NodeB at first calculates corresponding DL time slot and the right sequence number of receiving of code combination transmission channel of TPC order according to top formula, adjusts the down transmitting power level then.

Similar with above-mentioned descending inner-loop power control, in the up inner-loop power control process, the time slot corresponding of the TPC order control that NodeB sends and code combination transmission channel are to being determined by following formula:

UL _pos＝(SFN′·N _{UL_TPCsymbols}+TPC _DLpos+((SFN′·N _{UL_TPCsymbols}+TPC _DLpos)div(N _ULslot)))mod(N _ULslot)

Wherein, ULpos refers to up (UL) time slot and the right sequence number of code combination transmission channel of the TPC control that NodeB sends; SFN ' refers to system's subframe numbers, and system frame number SFN=SFN '/2 for dividing exactly, round downwards herein; N _{UL_TPCsymbols}Refer to the TPC total number of symbols that NodeB sends in the subframe; TPC _DLposThe sequence number that refers to the TPC that NodeB in the subframe is to be sent; N _ULslotRefer to ascending time slot and the right sum of code combination transmission channel in the subframe.

Analyze following formula as can be known, for different SFN ', the right corresponding relation of the UL time slot of TPC order and its control and code combination transmission channel also is periodically along with the variation of SFN ' and the cycle is Subframe.

Receive for TPC, UE at first calculates corresponding UL time slot and the right sequence number of receiving of code combination transmission channel of TPC order according to top formula, adjusts the uplink transmission power level then.

Aforesaid TPC sends and reception mechanism exists following shortcoming: promptly, for when sending and receiving, determine TPC and the time slot of being controlled and code combination transmission channel between relation, must be through realizing after the complicated calculating, therefore comparatively expend computational resource, the treatment effeciency when causing TPC transmission and reception all compares lowly.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of power control command transmitting and send/method of reseptance, can be under the situation of carrying out less amount of calculation, determine TPC and the time slot of being controlled and code combination transmission channel between relation, improve the treatment effeciency when power control command transmitting send and receive thus.For this reason, the present invention also provides a kind of power control command transmitting to send/receiving system.

For solving the problems of the technologies described above, the invention provides a kind of power control command transmitting and send/method of reseptance:

Transmission for power control command may further comprise the steps:

(1) time slot and the right total N of code combination transmission channel that sends according to opposite end in the subframe _{Slot_1}, generate one first look-up table;

(2) in current subframe zero hour, current first look-up table is upgraded;

(3) if current subframe transmission power control commands, then the sequence number according to power control command to be sent reads corresponding element in current first look-up table, obtains time slot corresponding and the right sequence number of code combination transmission channel;

(4), send corresponding power control command according to time slot that is obtained and the right sequence number of code combination transmission channel;

(5) return step (2), continue of the transmission of next subframe power control command;

Reception for power control command may further comprise the steps:

(I) time slot and the right total N of code combination transmission channel that sends according to local terminal in the subframe _{Slot_2}, generate a second look-up table;

(II) in current subframe zero hour, current second look-up table is upgraded;

(III) if current subframe receives power control command, then the sequence number according to the power control command that receives reads element corresponding in the current second look-up table, obtains time slot corresponding and the right sequence number of code combination transmission channel;

(IV), adjust transmitting power according to time slot that is obtained and the right sequence number of code combination transmission channel;

(V) return step (II), continue of the reception of next subframe power control command.

The present invention also provide a kind of be used to realize described power control command transmitting give/power control command transmitting of method of reseptance send device, comprising:

Described look-up table initialization module (101) is used to generate the first initial look-up table, and it is input as the opposite end sends in the subframe time slot and the right total N of code combination transmission channel _{Slot_1}, be output as the initial value of each element in first look-up table;

Described circulating register (102), be used for cyclic shift look-up table left, it is input as the initial value of each element in the look-up table that described look-up table initialization module (101) generates and the control signal of register controlled module (103), is output as first look-up table after the cyclic shift;

Described register controlled module (103) is used to control the displacement sum of described circulating register (102) and the read-write of described circulating register (102) is controlled;

Described sequence number memory module (104), the time slot and the right sequence number of code combination transmission channel that are used to preserve power control command sequence number that local terminal sends, read from described register controlled module (103);

Described power control command transmitting send control module (105), is used for time slot and the right sequence number of code combination transmission channel according to described sequence number memory module (104) output, determines the power control command of the power control command sequence number correspondence of transmission.

The present invention also provides a kind of and is used to realize that described power control command transmitting send/the power control command receiving system of method of reseptance, comprising:

Described look-up table initialization module (201) is used to generate initial second look-up table, and it is input as local terminal sends in the subframe time slot and the right total N of code combination transmission channel _{Slot_2}, be output as the initial value of each element in the second look-up table;

Described circulating register (202), be used for cyclic shift look-up table left, it is input as the initial value of each element in the look-up table that described look-up table initialization module (201) generates and the control signal of register controlled module (203), is output as the second look-up table after the cyclic shift;

Described register controlled module (203) is used to control the displacement sum of described circulating register (202) and the read-write of described circulating register (202) is controlled;

Described sequence number memory module (204), the time slot and the right sequence number of code combination transmission channel that are used to preserve the power control command sequence number that receives, read from described register controlled module (203);

Described power control command transmitting send control module (205), is used for time slot and the right sequence number of code combination transmission channel according to described sequence number memory module (204) output, determine time slot and code combination transmission channel to and its transmitting power adjusted.

The present invention has such beneficial effect owing to adopted technique scheme, promptly by generate in advance one with time slot and the right relevant look-up table of sequence number of code combination transmission channel; And by the zero hour this look-up table being upgraded in every subframe, obtain the corresponding relation of the right sequence number of the time slot of the sequence number of to be sent or the power control command that receives and its control and code combination transmission channel, thereby realize according to the corresponding relation transmission power control commands in the time slot of load power control command that obtains, perhaps adjust time slot and the right transmitted power level of code combination transmission channel, promptly realize transmission or reception power control command; This method and apparatus of the present invention implements comparatively simple, and amount of calculation is little, has therefore improved the treatment effeciency of the transmission and the reception of power control command.

Description of drawings

The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a frame structure schematic diagram in the TD-SCDMA system;

Fig. 2 is the position view of TPC in the up-downgoing business burst;

Fig. 3 is expression TPC command sequence TPC _ULposAnd the form of the corresponding relation between the right sequence number DLpos of descending time slot and code combination transmission channel;

Fig. 4 is the flow chart when terminal sends power control command according to one embodiment of present invention;

Fig. 5 is the generation schematic diagram of used look-up table during the terminal transmission power control commands according to one embodiment of present invention;

Fig. 6 is the flow chart when terminal receives power control command according to one embodiment of present invention;

Fig. 7 is the structural representation of TPC dispensing device according to one embodiment of present invention;

Fig. 8 is the structural representation of TPC receiving system according to one embodiment of present invention.

Embodiment

In one embodiment, as shown in Figure 4, for be used to realize the schematic flow sheet of the method that terminal sends power control command according to the present invention, at this moment local terminal is a terminal, and the opposite end is the base station, belongs to descending inner loop power control, and its specific implementation step is as follows:

The first step, time slot that sends according to base station (NodeB) in the subframe and code combination transmission channel are to the total N of (being that descending time slot and code combination transmission channel are right, DL time slot and CCTrCH pair) _DLslot, generating a length is N _DLslot* N _DLslotLook-up table Table1, enter then second the step.The concrete value of the element of look-up table Table1 should be: it is N that this look-up table can be regarded as by length _DLslotThe sublist cascade form, and the total number of sublist is N _DLslotWherein the element 1 of first sublist arrives element N _DLslotValue be respectively 0 to N _DLslot-1 ascending order is arranged, the N in the look-up table after first sublist _DLslotThe element value of-1 sublist has following rule: the element 1 to element N of k sublist _DLslotCorresponding respectively k-1 the sublist of value circulate left and move in the sublist that obtains after 1 element 1 to element N _DLslot, k=2 here, 3 ..., N _DLslot-1, N _DLslotTherefore, can adopt following method to generate look-up table Table1, as shown in Figure 5, comprise: at first, generating a length is N _DLslotSublist 1 (as being SubTable1), element S ubTable1 (1)～SubTable1 (N among the SubTable1 _Dlslot) the corresponding N of difference _DLslotSequence number 0～N that individual descending time slot and code combination transmission channel are right _DLslot-1; Then, generate look-up table Table1, the element T able1 of Table1 (1)～Table1 (N by SubTable1 _Dlslot) difference corresponding SubTable1 (1)～SubTable1 (N _Dlslot), and Table1 ((k-1) * N _DLslot+ 1)～Table1 (k * N _Dlslot) corresponding respectively with SubTable1 left cyclic shift k-1 time and move 1 at every turn after element S ubTable1 (1)～SubTable1 (N of correspondence _Dlslot), k=2 here ..., N _DLslot

Second step, current look-up table Table1 is upgraded by cyclic shift left in current subframe zero hour, entered for the 3rd step then.Number to the cyclic shift of current Table1 is divided into two kinds of situations: if not first Table1 being carried out shifting function, promptly be not to be shifted first, then the number of cyclic shift is N _{DL_TPCsymbols}The position; If first Table1 is carried out shifting function, then the number of cyclic shift is relevant with current subframe numbers SFN ', specifically can calculate by following formula:

$(\left(\left({\mathrm{SFN}}^{\&prime;}\right)\mathrm{mod}\left(\frac{{\mathrm{<figure-callout\; id="2"\; label="N\; DLslot"\; filenames="A20071004071100231.png,A20071004071100242.png"\; state="\{\{state\}\}">N</figure-callout>}}_{\mathrm{DLslot}}^{}}{\gcd (N_{\mathrm{DLslot}},N_{\mathrm{DL}\_\mathrm{TPCsymbols}})}\right)\right)\&times;N_{\mathrm{DL}\_\mathrm{TPCsymbols}})\mathrm{mod}\left(N_{\mathrm{DLslot}}^2\right)$

Wherein, N _{DL_TPCsymbols}Refer to the TPC total number of symbols that UE sends in the subframe; Gcd () is for asking the function of greatest common divisor (greatest common divisor).

The 3rd step, judge whether transmission power control commands TPC of this current subframe, as if not sending, enter step the second and go on foot; Otherwise, entered for the 4th step.

In the 4th step, the sequence number according to TPC to be sent reads element corresponding among the current look-up table Table1 again, obtains corresponding descending time slot and the right sequence number of code combination transmission channel, enters five steps of step the.In one embodiment, the concrete grammar that reads current look-up table Table1 is: power control command sequence number to be sent is added 1 as call number, read the element of this call number correspondence in the look-up table, be TPC sequence number time slot corresponding to be sent and the right sequence number of code combination transmission channel.

The 5th step according to descending time slot that is obtained and the right sequence number of code combination transmission channel, sent corresponding TPC, returned for second step then, to continue the transmission of next subframe to power control command.At this moment, the object of the TPC of transmission control is exactly that the descending time slot and the code combination transmission channel of the right sequence number indication of this descending time slot and code combination transmission channel is right.

In one embodiment, as shown in Figure 6, for be used to realize the schematic flow sheet of the method that terminal receives power control command according to the present invention, at this moment local terminal is a terminal, and the opposite end is the base station, belongs to up inner loop power control, and its specific implementation step is as follows:

The first step, time slot that sends according to terminal in the subframe and code combination transmission channel are to the total N of (being that ascending time slot and code combination transmission channel are right, UL time slot and CCTrCH pair) _ULslot, generating a length is N _ULslot* N _ULslotLook-up table Table10, enter then second the step.The concrete value of the element of look-up table Table10 should be: it is N that this look-up table Table10 can be regarded as by length _ULslotThe sublist cascade form, and the total number of sublist is N _ULslotWherein the element 1 of first sublist arrives element N _ULslotValue be respectively 0 to N _ULslot-1 ascending order is arranged, the N among the look-up table Table10 after first sublist _ULslotThe element value of-1 sublist has following rule: the element 1 to element N of k sublist _ULslotCorresponding respectively k-1 the sublist of value circulate left and move in the sublist that obtains after 1 element 1 to element N _ULslot, k=2 here, 3 ..., N _ULslot-1, N _ULslotTherefore, the generation method of Table1 is similar in the method for generation look-up table Table10 and the transmission flow, and be specially: at first, generating a length is N _ULslotSublist (being made as SubTable10), element S ubTable10 (1)～SubTable10 (N among the SubTable10 _Ulslot) the corresponding N of difference _ULslotSequence number 0～N that individual ascending time slot and code combination transmission channel are right _ULslot-1; Then, generate look-up table Table10, the element T able10 of Table10 (1)～Table10 (N by SubTable10 _Ulslot) difference corresponding SubTable10 (1)～SubTable10 (N _Ulslot), and Table10 ((j-1) * N _ULslot+ 1)～Table10 (j * N _Ulslot) corresponding respectively with SubTable10 left cyclic shift j-1 time and move 1 at every turn after element S ubTable10 (1)～SubTable10 (N of correspondence _Utslot), j=2 here ..., N _ULslot

Second step, current look-up table Table10 is upgraded by cyclic shift left in every subframe zero hour, entered for the 3rd step then.Number to the cyclic shift of current Table10 is divided into two kinds of situations: if not first Table10 being operated, promptly be not to be shifted first, then the number of cyclic shift is N _{UL_TPCsymbols}The position; If first Table10 is operated, then the number of cyclic shift is relevant with current subframe numbers SFN ', specifically can calculate by following formula:

$(\left(\left({\mathrm{SFN}}^{\&prime;}\right)\mathrm{mod}\left(\frac{{\mathrm{<figure-callout\; id="2"\; label="N\; ULslot"\; filenames="A20071004071100231.png,A20071004071100242.png"\; state="\{\{state\}\}">N</figure-callout>}}_{\mathrm{ULslot}}^{}}{\gcd (N_{\mathrm{ULslot}},N_{\mathrm{UL}\_\mathrm{TPCsymbols}})}\right)\right)\&times;N_{\mathrm{UL}\_\mathrm{TPCsymbols}})\mathrm{mod}\left(N_{\mathrm{ULslot}}^2\right)$

Wherein, N _{UL_TPCsymbols}Refer to the TPC total number of symbols that base station (NodeB) sends in the subframe; Gcd () is for asking the function of greatest common divisor.

The 3rd step, judge whether current subframe has received power control command TPC, if do not receive, entered for second step; Otherwise, entered for the 4th step.

The 4th step, read element corresponding among the current look-up table Table10 according to the sequence number of the TPC that receives, obtain corresponding ascending time slot and the right sequence number of code combination transmission channel, enter five steps of step the.The concrete grammar that reads current look-up table Table10 is: the power control command sequence number that receives is added 1 as call number, read the element of this call number correspondence among the Table10, be the TPC sequence number time slot corresponding and the right sequence number of code combination transmission channel that receive.

The 5th step, according to ascending time slot and the right sequence number of code combination transmission channel, adjust uplink transmission power, returned for second step then, to continue of the reception of next subframe to power control command.At this moment, the object of adjusting transmitting power is exactly that the ascending time slot and the code combination transmission channel of the right sequence number indication of this time slot and code combination transmission channel is right.

In another embodiment, if right total identical of the time slot of the right sum of the time slot of up transmission and code combination transmission channel and descending transmission and code combination transmission channel in subframe, the initial look-up table that is generated when then sending and receiving is identical, and promptly the initial value of Tablel and Table10 is identical among the embodiment of front.If but the sum of the sum of the power control command of up transmission and the power control command of descending transmission is different in subframe, when in each subframe, power control command being sent and receiving so, therefore the figure place of look-up table being carried out cyclic shift is inequality, also needs simultaneously to safeguard a look-up table respectively for the transmission of power control command and reception in a terminal.And if right total identical of the time slot of the right sum of the time slot of up transmission and code combination transmission channel and descending transmission and code combination transmission channel in subframe, and the sum of the power control command of up transmission is also identical with the sum of the power control command of descending transmission in subframe, because when at this moment power control command sends and receives, it is identical in each subframe look-up table to be carried out the figure place of cyclic shift, therefore only is required to be the transmission of power control command and receives and safeguard that a look-up table is just passable.

Terminal also can be applied to the transmission/method of reseptance of base station to power control command similarly to the transmission/method of reseptance of power control command as mentioned above, and just at this moment: local terminal is the base station, and the opposite end is a terminal; When being used to realize the base station, belong to up inner loop power control to the transmission of power control command; And when being used to realize the base station, belong to descending inner loop power control to the reception of power control command.

In order to realize the transmission/method of reseptance of aforesaid power control command, the present invention has also designed following dispensing device and receiving system:

In one embodiment, as shown in Figure 7, be terminal (UE) the side TPC dispensing device of being realized according to the present invention, this dispensing device can be realized the sending method of aforesaid power control command, comprise: look-up table initialization module 101, circulating register 102, register controlled module 103, sequence number memory module 104 and power control command transmitting send control module 105.

Described look-up table initialization module 101 is used to generate initial look-up table, and it is input as base station (NodeB) sends in the subframe descending time slot and the right total N of code combination transmission channel _DLslot, be output as the initial value of each element in the look-up table.

Described circulating register 102 is used for cyclic shift look-up table left, and it is input as the initial value of each element in the look-up table that module 101 generates and the control signal of register controlled module 103, is output as the look-up table after the cyclic shift.

Described register controlled module 103 is used for the displacement sum of control module 102 and to the read-write control of module 102; It is input as current subframe numbers SFN ', N _DLslot, UE sends in subframe power control command symbol total N _{DL_TPCsymbols}Be output as control signal to module 102, comprise write control, read control, the displacement control signal.

Described sequence number memory module 104, the time slot and the right sequence number of code combination transmission channel that are used to preserve power control command sequence number that UE sends, read from module 103.Time slot and the right sequence number of code combination transmission channel that it is input as power control command sequence number that UE sends, reads from module 103; Be output as power control command sequence number that UE sends with and corresponding descending time slot and the right sequence number of code combination transmission channel.

Described power control command transmitting send control module 105, is used for the power control command of definite power control command sequence number correspondence that sends; Power control command sequence number and its time slot corresponding and the right sequence number of code combination transmission channel that the UE that its input module 104 generates sends; Output is power control command.

Certainly, for one of ordinary skill in the art, can expect how adopting similar structure to realize base station side TPC dispensing device at an easy rate.

In one embodiment, as shown in Figure 8, be the end side TPC receiving system of being realized according to the present invention, this receiving system can be used for realizing the method for reseptance of aforesaid power control command, comprise: look-up table initialization module 201, circulating register 202, register controlled module 203, sequence number memory module 204, transmitting power are adjusted control module 205.

Described look-up table initialization module 201 is used to generate initial look-up table, and it is input as UE sends in the subframe ascending time slot and the right total N of code combination transmission channel _ULslot, be output as the initial value of each element in the look-up table.

Described circulating register 202 is used for cyclic shift look-up table left, and it is input as the initial value of each element in the look-up table that module 201 generates and the control signal of register controlled module 203, is output as the look-up table after the cyclic shift.

Described register controlled module 203 is used for the displacement sum of control module 202 and to the read-write control of module 202; It is input as current subframe numbers SFN ', N _ULslot, base station (NodeB) sends in subframe TPC total number of symbols N _{UL_TPCsymbols}Be output as control signal to module 202, comprise write control, read control, the displacement control signal.

Described sequence number memory module 204, the time slot and the right sequence number of code combination transmission channel that are used to preserve the power control command sequence number that receives, read from module 203.Time slot and the right sequence number of code combination transmission channel that it is input as the power control command sequence number that receives, reads from module 203; Be output as the power control command sequence number that receives with and time slot corresponding and the right sequence number of code combination transmission channel.

Described transmitting power is adjusted control module 205, be used for determining time slot and code combination transmission channel to and its transmitting power adjusted; The power control command sequence number that receives and its time slot corresponding and the right sequence number of code combination transmission channel that its input module 204 generates; Output is to carrying out the transmitting power adjustment to time slot and code combination transmission channel.

Certainly, for one of ordinary skill in the art, can expect how adopting similar structure to realize base station side TPC receiving system at an easy rate.

Claims (10)

1, a kind of power control command transmitting send/method of reseptance, it is characterized in that:

Transmission for power control command may further comprise the steps:

(1) time slot and the right total N of code combination transmission channel that sends according to opposite end in the subframe _{Slot_1}, generate one first look-up table;

(2) in current subframe zero hour, current first look-up table is upgraded;

(3) if current subframe transmission power control commands, then the sequence number according to power control command to be sent reads corresponding element in current first look-up table, obtains time slot corresponding and the right sequence number of code combination transmission channel;

(4), send corresponding power control command according to time slot that is obtained and the right sequence number of code combination transmission channel;

(5) return step (2), continue of the transmission of next subframe power control command;

Reception for power control command may further comprise the steps:

(I) time slot and the right total N of code combination transmission channel that sends according to local terminal in the subframe _{Slot_2}, generate a second look-up table;

(II) in current subframe zero hour, current second look-up table is upgraded;

(III) if current subframe receives power control command, then the sequence number according to the power control command that receives reads element corresponding in the current second look-up table, obtains time slot corresponding and the right sequence number of code combination transmission channel;

(IV), adjust transmitting power according to time slot that is obtained and the right sequence number of code combination transmission channel;

(V) return step (II), continue of the reception of next subframe power control command.

2, power control command transmitting according to claim 1 send/method of reseptance, it is characterized in that:

The length of described first look-up table be the right sum of the opposite end sends in the subframe time slot and code combination transmission channel square, i.e. N _{Slot_1}* N _{Slot_1}The length of described second look-up table be the right sum of local terminal sends in the subframe time slot and code combination transmission channel square, i.e. N _{Slot_2}* N _{Slot_2}

3, power control command transmitting according to claim 2 send/method of reseptance, it is characterized in that:

Specifically generate first look-up table in the step (1) by the following method: at first, generating a length is N _Slot1The first sublist SubTable1, element S ubTable1 (1)～SubTable1 (N among the first sublist SubTable1 _{Slot_1}) the corresponding N of difference _{Slot_1}Sequence number 0～N that individual time slot and code combination transmission channel are right _{Slot_1}-1 ascending order is arranged; Then, generate the first look-up table Table1, element T able1 (1)～Table1 (N in described first look-up table by SubTable1 _{Slot_1}) difference corresponding SubTable1 (1)～SubTable1 (N _{Slot_1}), and Table1 ((k-1) * N _{Slot_1}+ 1)～Table1 (k * N _{Slot_1}) corresponding respectively with SubTable1 left cyclic shift k-1 time and move 1 at every turn after element S ubTable1 (1)～SubTable1 (N of correspondence _{Slot_1}), k=2 wherein ..., N _{Slot_1}

Generate second look-up table in the step (I) by the following method: generating a length is N _{Slot_2}The second sublist SubTable10, element S ubTable10 (1)～SubTable10 (N among the second sublist SubTable10 _{Slot_2}) the corresponding N of difference _{Slot_2}Sequence number 0～N that individual time slot and code combination transmission channel are right _{Slot_2}-1 ascending order is arranged; Then, generate second look-up table Table10, the element T able10 in the described second look-up table (1)～Table10 (N by SubTable10 _{Slot_2}) difference corresponding SubTable10 (1)～SubTable10 (N _{Slot_2}), and Table10 ((j-1) * N _{Slot_2}+ 1)～Table10 (j * N _{Slot_2}) corresponding respectively with SubTable10 left cyclic shift j-1 time and move 1 at every turn after element S ubTable10 (1)～SubTable10 (N of correspondence _{Slot_2}), j=2 wherein ..., N _{Slot_2}

4, power control command transmitting according to claim 3 send/method of reseptance, it is characterized in that:

In the step (2), specifically by the method for cyclic shift left current first look-up table is upgraded, wherein if not the displacement first to first look-up table, then the displacement number of cyclic shift is N _{TPCsymbols_1}The position; If displacement first then calculates the displacement number by following formula:

$(\left(\left({\mathrm{SFN}}^{\&prime;}\right)\mathrm{mod}\left(\frac{N_{\mathrm{slot}\_1}^2}{\gcd (N_{\mathrm{slot}\_1},N_{\mathrm{TPCsymbols}\_1})}\right)\right)\&times;N_{\mathrm{TPCsymbols}\_1})\mathrm{mod}\left(N_{\mathrm{slot}\_1}^2\right)$

Wherein, N _{TPCsymbols_1}The sum that refers to the power command control character that local terminal sends in the subframe; Gcd () is for asking the function of greatest common divisor, and SFN ' is current subframe numbers;

In the step (II), specifically by the method for cyclic shift left current second look-up table is upgraded, wherein if not the displacement first to second look-up table, then the displacement number of cyclic shift is N _{TPCsymbols_2}The position; If, then calculate the displacement number by following formula to the displacement first of second look-up table:

$(\left(\left({\mathrm{SFN}}^{\&prime;}\right)\mathrm{mod}\left(\frac{N_{\mathrm{slot}\_2}^2}{\gcd (N_{\mathrm{slot}\_2},N_{\mathrm{TPCsymbols}\_2})}\right)\right)\&times;N_{\mathrm{TPCsymbols}\_2})\mathrm{mod}\left(N_{\mathrm{slot}\_2}^2\right)$

Wherein, N _{TPCsymbols_2}The sum that refers to the power control command symbol that the opposite end sends in the subframe; Gcd () is for asking the function of greatest common divisor, and SFN ' is current subframe numbers.

5, send/method of reseptance according to claim 1 or 4 described power control command transmittings, it is characterized in that:

In step (3), the concrete element that reads correspondence in current first look-up table by the following method: power control command sequence number to be sent is added 1 as call number, read the element of this call number correspondence in current first look-up table, be power control command sequence number time slot corresponding to be sent and the right sequence number of code combination transmission channel;

In step (III), the concrete element that reads correspondence in the current second look-up table by the following method: the power control command sequence number that receives is added 1 as call number, read the element of this call number correspondence in the current second look-up table, be the power control command sequence number time slot corresponding and the right sequence number of code combination transmission channel that receive.

6, send/method of reseptance according to claim 1 or 4 described power control command transmittings, it is characterized in that: if right total identical of the time slot of the right sum of the time slot of up transmission and code combination transmission channel and descending transmission and code combination transmission channel in subframe, then the initial value of power control command transmitting first look-up table that send and generated when receiving and second look-up table is identical.

7, send/method of reseptance according to claim 1 or 4 described power control command transmittings, it is characterized in that: if right total identical of the time slot of the right sum of the time slot of up transmission and code combination transmission channel and descending transmission and code combination transmission channel in subframe, and the sum of the power control command of up transmission is also identical with the sum of the power control command of descending transmission in subframe, then only is required to be the transmission of power control command and receives to safeguard a look-up table simultaneously.

8, power control command transmitting according to claim 1 send/method of reseptance, it is characterized in that: described local terminal is a terminal, and the opposite end is the base station; Perhaps, described local terminal is the base station, and the opposite end is a terminal.

9, a kind ofly be used to realize that the power control command transmitting of the described method of claim 1 send device, it is characterized in that, comprising:

Described look-up table initialization module (101) is used to generate the first initial look-up table, and it is input as the opposite end sends in the subframe time slot and the right total N of code combination transmission channel _{Slot_1}, be output as the initial value of each element in first look-up table;

Described circulating register (102), be used for cyclic shift look-up table left, it is input as the initial value of each element in the look-up table that described look-up table initialization module (101) generates and the control signal of register controlled module (103), is output as first look-up table after the cyclic shift;

Described register controlled module (103) is used to control the displacement sum of described circulating register (102) and the read-write of described circulating register (102) is controlled;

Described sequence number memory module (104), the time slot and the right sequence number of code combination transmission channel that are used to preserve power control command sequence number that local terminal sends, read from described register controlled module (103);

Described power control command transmitting send control module (105), is used for time slot and the right sequence number of code combination transmission channel according to described sequence number memory module (104) output, determines the power control command of the power control command sequence number correspondence of transmission.

10, a kind of power control command receiving system that is used to realize the described method of claim 1 is characterized in that, comprising:

Described look-up table initialization module (201) is used to generate initial second look-up table, and it is input as local terminal sends in the subframe time slot and the right total N of code combination transmission channel _{Slot_2}, be output as the initial value of each element in the second look-up table;

Described circulating register (202), be used for cyclic shift look-up table left, it is input as the initial value of each element in the look-up table that described look-up table initialization module (201) generates and the control signal of register controlled module (203), is output as the second look-up table after the cyclic shift;

Described register controlled module (203) is used to control the displacement sum of described circulating register (202) and the read-write of described circulating register (202) is controlled;

Described sequence number memory module (204), the time slot and the right sequence number of code combination transmission channel that are used to preserve the power control command sequence number that receives, read from described register controlled module (203);

Described power control command transmitting send control module (205), is used for time slot and the right sequence number of code combination transmission channel according to described sequence number memory module (204) output, determine time slot and code combination transmission channel to and its transmitting power adjusted.

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