CN102281592B - Method and device for transmitting transmission power control command - Google Patents
Method and device for transmitting transmission power control command Download PDFInfo
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Abstract
The invention discloses a method for transmitting a transmission power control (TPC) command. The method comprises the following steps of: transmitting a parameter (tpc-index) related to an uplink transmission power control command to terminal user equipment (UE) by a base station or radio resource controller (RNC-radio network control), and carrying and transmitting TPC information of an uplink channel of each uplink carrier wave by a physical downlink control channel (PDCCH) according to preset sequence and position; for the TPC information of a physical uplink shared channel (PUSCH), scrambling the PDCCH by using a physical uplink shared channel scrambler (TPC-PUSCH-RNTI); and for the TPC information of a physical uplink control channel (PUCCH), scrambling the PDCCH by using a physicaluplink control channel scrambler (TPC-PUCCH-RNTI), and sending the PDCCH to the UE. The invention also discloses a device for transmitting the transmission power control command. By using the embodiment of the invention, the overhead of control signaling can be reduced.
Description
Technical field
The present invention relates to communication technical field, more specifically, relate to a kind of method and device of transmission power control command transmission.
Background technology
At LTE (Long Term Evolution, Long Term Evolution) in the R8 standard, UE is when carrying out transmitting uplink data, for PUCCH (Physical uplink control channel, Physical Uplink Control Channel) and PUSCH (Physical uplink shared channel, Physical Uplink Shared Channel) TPC (transmitpower control, through-put power control) order is that PDCCH (Physical downlinkcontrol channel is passed through in the base station, Physical Downlink Control Channel) DCI (downlink control information, Downlink Control Information) format3/3a carries to transmit and informs UE's (user).Wherein the main distinction of PDCCH DCIformat 3 and format 3a is: for up channel PUCCH or the PUSCH of some specific UE, format 3 has through-put power control (TPC) information of 2bit, and format 3a only has the TPC information of 1bit.
When utilizing PDCCH DCI format3/3a to carry transmission TPC information, TPC information for PUCCH, TPC-PUCCH-RNTI carries out scrambling to PDCCH by the Physical Uplink Control Channel scrambler, and the utilization parametric t pc-index relevant with the TPC information of PUCCH channel to indicate which position be TPC information corresponding to UE oneself; Same, TPC information for PUSCH, TPC-PUSCH-RNTI carries out scrambling to PDCCH by the Physical Uplink Shared Channel scrambler, and the utilization parametric t pc-index relevant with the TPC information of PUSCH channel to indicate which position be TPC information corresponding to UE oneself.And TPC-PUCCH-RNTI is different from TPC-PUSCH-RNTI, is up PUCCH channel or PUSCH channel corresponding to UE in order to distinguish TPC information.For some UE, the parametric t pc-index that TPC-PUCCH-RNTI, TPC-PUSCH-RNTI are relevant with TPC information is disposed by high level.
LTE-Advanced (LTE enhancing) has proposed the concept of uplink and downlink carrier aggregation, i.e. uplink and downlink transmission can be used a plurality of carrier waves.According to the present conclusion of reaching: five carrier waves can be supported at most in upper and lower provisional capital, and each carrier wave maximum can be the bandwidth of 20M.Like this, uplink and downlink can be supported the bandwidth of 100M.If this moment, UE was when carrying out transmitting uplink data, for the TPC information of the PUCCH/PUSCH on up each carrier wave, how the base station utilizes PDCCH DCI format 3/3a to carry transmission and informs UE, is the problem that needs solve.
Prior art has addressed the above problem following methods:
(1) utilizes a plurality of PDCCH channel bearing transmission TPC information
Referring in the accompanying drawing 1 under state of carrier aggregation the signaling structure schematic diagram of some up-link carriers transmission power control command in LTE-Advanced.For some up-link carriers of UE, increase carrier wave indication information (CIF) at PDCCH DCIformat 3/3a.Which up-link carrier CIF carries the TPC information of transmission corresponding in order to indication.Like this, UE can learn the TPC information of back is corresponding to which up-link carrier of UE by CIF information.The TPC information of back is relevant with the parametric t pc-index of high-rise configuration, and tpc-index is corresponding to UE oneself TPC information on this up-link carrier in order to indicate which position.Wherein, for the TPC information of PUCCH by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of PUSCH by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.Wherein, because the corresponding corresponding PDCCH channel of the up channel PUCCH of each up-link carrier and PUSCH difference, so the up channel of a plurality of up-link carriers carries transmission corresponding to different descending PDCCH channels.Therefore the TPC-PUCCH-RNTI relevant with the TPC information of PUCCH channel for different up-link carriers can be the same or different, and can be the same or different equally for the TPC-PUSCH-RNTI relevant with the TPC information of PUSCH channel of different up-link carriers.
(2) utilize a PDCCH channel bearing transmission TPC information
Referring to the left figure in the accompanying drawing 2 be in a PDCCH channel transmission 2 up-link carrier transmission power control commands the signaling structure schematic diagram, increase by two CIF indication informations, the TPC information that is used to indicate the back is corresponding to different up-link carriers.Accordingly, the TPC information behind the CIF of correspondence is relevant with the parametric t pc-index of high-rise configuration, and this parametric t pc-index is used to indicate which position is the TPC information of corresponding UE in the TPC information of back.For 2 up-link carriers, utilize a PDCCH channel to carry the relevant TPC information of transmission.Wherein for the TPC information of PUCCH by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of PUSCH by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.Need 1 TPC-PUCCH-RNTI and 1 TPC-PUSCH-RNTI this moment.
Right figure in the accompanying drawing 2 is different from left figure be in, the tpc-index parameter of relevant with TPC information two up-link carriers corresponding to some UE is identical among the left figure, and the tpc-index parameter among the right figure is different.Same, for the TPC information of PUCCH by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of PUSCH by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.Need 1 TPC-PUCCH-RNTI and 1 TPC-PUS CH-RNTI this moment.
In summary, in the prior art, for the up-link carrier of each carrying PUCCH/PUSCH of UE, when its TPC information of carrying transmission, need in PDCCH, increase corresponding CIF and carry out carrier wave and indicate.The CIF that increase this moment has increased the expense of control signal so that the content of the TPC information of PDCCH carrying transmission reduces.
Summary of the invention
The embodiment of the invention proposes a kind of method of transmission power control command transmission, to reduce the expense of control signal.
The embodiment of the invention also proposes a kind of device of transmission power control command transmission, to reduce the expense of control signal.
The technical scheme of the embodiment of the invention is as follows:
A kind of method of transmission power control command transmission, base station or radio resource controller RNC-radionetwork control are that terminal UE issues the parametric t pc-index relevant with the uplink transmit power control command, the method comprises:
The TPC information of the up channel that physical downlink control channel PDCCH is transmitted each up-link carrier according to predetermined order and position carry;
For the TPC information of PUSCH, utilize Physical Uplink Shared Channel scrambler TPC-PUSCH-RNTI that PDCCH is carried out scrambling; For the TPC information of PUCCH, utilize Physical Uplink Control Channel scrambler TPC-PUCCH-RNTI that PDCCH is carried out scrambling, and described PDCCH is sent to UE.
Describedly comprise according to predetermined order and position carry that according to the number of carrier wave successively continuous bearing, and the bit number of described TPC information is identical.
Describedly comprise according to predetermined order and position carry that carry successively according to the number of carrier wave, the bit number of described TPC information is identical, and the interval of adjacent carrier is identical.
Further comprise segment identification between the described up-link carrier, described segment identification is distinguished the original position of described tpc-index.
Further comprise carrier wave indication information CIF between the described up-link carrier, described CIF distinguishes the original position of described tpc-index.
When TPC-PUSCH-RNTI has two at least, described TPC-PUSCH-RNTI is identical, and when TPC-PUCCH-RNTI has two at least, described TPC-PUCCH-RNTI is identical.
Described tpc-index is identical.
Described tpc-index is different.
A kind of device of transmission power control command transmission, base station or radio resource controller RNC-radionetwork control are that terminal UE issues and uplink transmit power control parametric t pc-index, and this device comprises:
Transmitting terminal, the TPC information of the up channel that transmits each up-link carrier according to predetermined order and position carry in physical downlink control channel PDCCH; For the TPC information of PUSCH, utilize Physical Uplink Shared Channel scrambler TPC-PUSCH-RNTI that PDCCH is carried out scrambling; For the TPC information of PUCCH, utilize Physical Uplink Control Channel scrambler TPC-PUCCH-RNTI that PDCCH is carried out scrambling;
Receiving terminal, utilize TPC-PUSCH-RNTI to described PDCCH descrambling, utilize TPC-PUCCH-RNTI to described PDCCH descrambling, described receiving terminal further obtains described TPC information according to predetermined order by the position that described tpc-index indexes the upper corresponding TPC information of described PDCCH.
Described transmitting terminal comprises,
Control module is in the TPC information of PDCCH according to the up channel of predetermined order and up each carrier wave of position carry transmission;
Scrambling module for the TPC information of PUSCH, utilizes TPC-PUSCH-RNTI that PDCCH is carried out scrambling; For the TPC information of PUCCH, utilize TPC-PUCCH-RNTI that PDCCH is carried out scrambling;
Described receiving terminal comprises,
Descrambling module utilizes TPC-PUSCH-RNTI to described PDCCH descrambling, utilizes TPC-PUCCH-RNTI to described PDCCH descrambling;
Message module, the position by described tpc-index indexes the corresponding TPC information of the upper receiving terminal of described PDCCH further obtains described TPC information according to predetermined order carrying.
Described control module be used for controlling described PDCCH according to the number of carrier wave successively continuous bearing, and the bit number of described TPC information is identical.
Described control module is carried successively for controlling the number of described PDCCH according to carrier wave, and the bit number of described TPC information is identical, and the interval of adjacent carrier is identical.
Described control module is further used for, and segment identification is set between up-link carrier, and described segment identification is distinguished the original position of described tpc-index.
Described control module is further used for, and carrier wave indication information CIF is set between up-link carrier, and described CIF distinguishes the original position of described tpc-index.
Described control module is further used for, and when TPC-PUSCH-RNTI has two at least, it is identical that described TPC-PUSCH-RNTI is set, and when TPC-PUCCH-RNTI has two at least, it is identical that described TPC-PUCCH-RNTI is set.
From technique scheme, can find out, in embodiments of the present invention, high-rise for UE disposes and issue the parametric t pc-index relevant with uplink transmit power control, utilize the TPC information of PDCCH carrying transmission UE PUCCH/PUSCH on each up-link carrier according to predetermined order and position; For the TPC information of PUSCH channel, utilize TPC-PUSCH-RNTI to the PDCCH scrambling; For the TPC information of PUCCH channel, utilize TPC-PUCCH-RNTI to the PDCCH scrambling, then send described PDCCH.Owing to utilize PDCCH to carry TPC information according to predetermined order, then can not use CIF, and then reduce the expense of control signal.
Description of drawings
Fig. 1 be in the prior art under the carrier aggregation situation signaling structure schematic diagram of some up-link carrier transmission power control commands;
Fig. 2 is the signaling structure schematic diagram that utilizes the up channel transmission power control command of two up-link carriers of same PDCCH carrying transmission in the prior art;
Fig. 3 is the method flow schematic diagram of a kind of transmission power control command transmission of the embodiment of the invention;
Fig. 4 is the signaling structure schematic diagram that the embodiment of the invention one is utilized the up channel transmission power control command of a plurality of up-link carriers of same PDCCH carrying transmission;
Fig. 5 is the signaling structure schematic diagram that the embodiment of the invention two is utilized the up channel transmission power control command of a plurality of up-link carriers of same PDCCH carrying transmission;
Fig. 6 is that the embodiment of the invention three utilizes same PDCCH to carry the signaling structure schematic diagram of the up channel transmission power control command of two up-link carriers that transmit;
Fig. 7 is that the embodiment of the invention four utilizes same PDCCH to carry the signaling structure schematic diagram of the up channel transmission power control command of two up-link carriers that transmit;
Fig. 8 is the apparatus structure schematic diagram of transmission power control command of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
In embodiments of the present invention, in the transmission course of TPC information, because bit (bit) Limited Number of the TPC information of PDCCH carrying transmission, and the CIF information that increases a carrier wave just need to take 3bit, the present invention takes full advantage of the TPC sequence of information transmission of the up channel of up-link carrier, no longer need to utilize CIF to carry out the carrier wave indication, compared with prior art, avoided the increase of control signal expense.In addition in embodiment three and four, for the PUCCH channel, owing to adopt identical TPC-PUCCH-RNTI that the PDCCH of its TPC information of carrying transmission is carried out scrambling, and then avoided because the increase of up-link carrier number increases TPC-PUCCH-RNTI accordingly; For the PUSCH channel, owing to adopt identical TPC-PUSCH-RNTI that the PDCCH of its TPC information of carrying transmission is carried out scrambling, and then avoided because the increase of up-link carrier number increases TPC-PUSCH-RNTI accordingly.The minimizing of TPC-PUCCH-RNTI and TPC-PUSCH-RNTI number has further reduced the complexity of UE to the PDCCH blind Detecting.
For some UE, generally corresponding to the TPC information of PUCCH channel on the different up-link carriers, can use different TPC-PUCCH-RNTI that PDCCH is carried out scrambling; TPC information corresponding to PUSCH channel on the different up-link carriers, can use different TPC-PUSCH-RNTI that PDCCH is carried out scrambling, like this, can utilize different scramblers and the corresponding relation of up-link carrier, and then the TPC information of distinguishing PDCCH carrying transmission is corresponding to the PUCCH channel of which up-link carrier or PUSCH channel.If the employing said method then can increase UE to the complexity of PDCCH blind Detecting.For example, respectively there are up PUCCH and PUSCH channel on two carrier waves that some UE go thereon, in same descending PDCCH channel, carry transmission for the TPC information of PUCCH channel on each up-link carrier.In the prior art, the TPC information of PUCCH channel on two up-link carriers of corresponding UE then needs two different TPC-PUCCH-RNTI respectively the PDCCH of carrying TPC information to be carried out scrambling; The TPC information of PUSCH channel on two up-link carriers of corresponding UE then needs two different TPC-PUSCH-RNTI respectively the PDCCH of carrying TPC information to be carried out scrambling; Corresponding to the up PUCCH channel of which up-link carrier of this UE or PUSCH channel in order to the TPC information of distinguishing PDCCH carrying transmission.After UE receives PDCCH information, need to amount to descrambling four times to PDCCH with corresponding scrambler.Therefore the number that reduces TPC-PUCCH-RNTI and TPC-PUSCH-RNTI just can reduce UE to the descrambling number of times of PDCCH, further reduces UE to the complexity of PDCCH blind Detecting.Therefore, in the embodiment of the invention three and four, TPC information for the PUCCH channel of a plurality of up-link carriers of some UE, a plurality of TPC-PUCCH-RNTI can be identical, the TPC information of the PUSCH channel of a plurality of up-link carriers, a plurality of TPC-PUSCH-RNTI also can be identical.
Are method flow schematic diagrames of a kind of transmission power control command of embodiment of the invention transmission referring to accompanying drawing 3, specifically may further comprise the steps:
Base station or radio resource controller (RNC-radio network control) issue and the relevant parametric t pc-index of up channel TPC information for UE, transmit the TPC information of the up channel of each up-link carrier in PDCCH according to the position carry of predetermined order and parametric t pc-index appointment.
For the TPC information of PUCCH, by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of PUSCH, by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.
The TPC information of PUCCH and PUSCH is carried to transmit by PDCCH and is informed UE.After the operations such as PDCCH process chnnel coding, be handed down to UE by the base station.
UE receives PDCCH, and according to the scrambler that oneself distributes, the PDCCH information of receiving is carried out descrambling, judges that this PDCCH has or not the TPC information of the up channel of own up-link carrier.
If descrambling is correct, indexes the position of the corresponding TPC information of the upper UE of PDCCH by tpc-index, and read the TPC information of the up channel of up each carrier wave according to predetermined order.
Embodiment one
In accompanying drawing 4, the base station is when carrying out semi-static data dispatch, at first high level is that base station or radio resource controller (RNC-radio network control) are for UE issues the parametric t pc-index relevant with TPC information, then according to predetermined order and the corresponding TPC information of position carry of parametric t pc-index.For the TPC information of PUCCH by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of PUSCH by TPC-PUSCH-RNTI to the PDCCH scrambling, be corresponding to the up PUCCH channel of up-link carrier or PUSCH channel in order to distinguish TPC information.The TPC information of PUCCH and PUSCH is carried to transmit by PDCCH and is informed UE.Then PDCCH through the operation such as chnnel coding after, be handed down to UE by the base station.In same PDCCH, transmit the TPC information of each carrier wave according to the order of predetermined carrier wave successively continuous bearing, namely begin until the 4th carrier wave from first carrier, the shared bit number of TPC information of the up channel of each carrier wave is identical, and wherein the order of carrier wave can be stipulated according to certain method and principle.For example: for some UE, four carrier waves of its up use utilize same PDCCH to carry the TPC information of the up channel of four up-link carrier polymerizations.TPC information for the up channel of first carrier is indicated by the tpc-index1 parameter, TPC information for the up channel of the 4th carrier wave is indicated by the tpc-index2 parameter, and is carried between first carrier and the 4th carrier wave according to predetermined order for the TPC information of the up channel of up the second carrier wave and the 3rd carrier wave.Like this, as long as use two parameters, i.e. the position at the whole story of TPC information, UE just can know the TPC information of the up channel of each up-link carrier.
For said method, can certainly only adopt a parametric t pc-index, namely indicate the initial position of TPC information of up channel of first carrier of the predefined procedure of some UE, the TPC information of then carrying its up channel according to the order of the number of carrier wave and carrier wave.
For the TPC information of the PUCCH of up-link carrier, by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of the PUSCH of up-link carrier, by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.
UE at first carries out descrambling according to scrambler to PDCCH after receiving the PDCCH information that is issued by the base station.If descrambling is consistent, then according to the position of parametric t pc-index indication, read the TPC information of the up channel of the upper corresponding carriers of PDCCH according to the order of carrier wave.
Different numbers for the up-link carrier polymerization can utilize similar technique scheme, and this paper just no longer gives unnecessary details.Certainly the TPC information of the up channel of each up-link carrier also can be successively discontinuous carrying, namely can transmit according to the sequence interval of carrier wave, and the interval of carrier wave is identical.For example: every the interval of one or several carrier waves, carry the corresponding TPC information of transmission according to predetermined carrier wave order by PDCCH.
Embodiment two
Referring to accompanying drawing 5, the base station is when carrying out semi-static data dispatch, and at first base station or RNC-radionetwork control are that UE issues the parametric t pc-index relevant with TPC information, then according to the corresponding TPC information of the position carry of parametric t pc-index.The bit number of TPC information is identical.For the TPC information of PUCCH by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of PUSCH by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.The TPC information of PUCCH and PUSCH is carried to transmit by PDCCH and is informed UE.Then PDCCH through the operation such as chnnel coding after, be handed down to UE by the base station.In same PDCCH, transmit the TPC information of each carrier wave according to the order of predetermined carrier wave successively continuous bearing, namely begin until the 4th carrier wave from first carrier, the shared bit number of TPC information of the up channel of each carrier wave is identical, and wherein the order of carrier wave can be stipulated according to certain method and principle.For example, utilize the TPC information of the up channel of four up-link carrier polymerizations of same PDCCH carrying.For the up channel of first carrier TPC information indicated by tpc-index1, then do not need tpc-index to indicate for the TPC information of up the second carrier wave, up the 3rd carrier wave and up the 4th carrier wave.Up the second carrier wave, up the 3rd carrier wave and up the 4th carrier wave are carried on after the first carrier according to predetermined order.Like this, as long as use a parameter, i.e. the original position of TPC information, UE just can and sequentially know the TPC information of the up channel of each up-link carrier according to the number of up-link carrier.
For the TPC information of the PUCCH of up-link carrier, by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of the PUSCH of up-link carrier, by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.
UE at first carries out descrambling according to scrambler to PDCCH after receiving the PDCCH information that is issued by the base station.If descrambling is consistent, then according to the original position of parametric t pc-index indication, the TPC information that reads the up channel of the upper corresponding carriers of PDCCH according to order and the carrier wave number of carrier wave.
Different numbers for the up-link carrier polymerization can utilize similar technique scheme, and this paper just no longer gives unnecessary details.Certainly the TPC information of the up channel of each up-link carrier also can be successively discontinuous carrying, namely can transmit according to the sequence interval of carrier wave, and the interval of carrier wave is identical.For example: every the interval of one or several carrier waves, carry the corresponding TPC information of transmission according to predetermined carrier wave order by PDCCH.
Embodiment three
Referring to accompanying drawing 6, left figure and right figure are the PDCCH structural representations of two up-link carrier transmission power control commands of embodiment three.Be that with the technical scheme difference of embodiment one and embodiment two interval of adjacent carrier can be different, between the TPC of each carrier wave information, increased segment identification.The TPC information of PUCCH and PUSCH is carried to transmit by PDCCH and is informed UE.For the TPC information of up channel PUCCH, by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of up channel PUSCH, by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to PUCCH or PUSCH.
In the accompanying drawing 6, the number of UE carrier aggregation is 2, for the TPC information of the up channel PUCCH/PUSCH of each up-link carrier, utilizes same PDCCH to carry transmission.A segment identification for the TPC information of different up-link carriers, can be added in certain fixed position between PDCCH in the base station when carrying out semi-static data dispatch.TPC information before this segment identification is corresponding to some up-link carriers, and to utilize parametric t pc-index 1 which position of indication be the TPC information of this UE; TPC information behind this segment identification is corresponding to the another one up-link carrier, and to utilize parametric t pc-index2 to indicate which position be the TPC information of this UE.
For the TPC information of the up channel PUCCH of up-link carrier, by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of the up channel PUSCH of up-link carrier by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.And for the TPC information of the PUCCH of 2 up-link carriers, TPC-PUCCH-RNTI is identical; For the TPC information of the PUSCH of 2 up-link carriers, TPC-PUSCH-RNTI also is identical.
UE at first carries out descrambling according to scrambler to PDCCH after receiving the PDCCH information that is issued by the base station.If descrambling is correct, then at first obtain the TPC information of the up channel of one of them carrier wave according to the position of tpc-index 1 indication, then according to segment identification and tpc-index 2 obtain the another one carrier waves the TPC information of up channel.
Need to prove: the position of segment identification can Set arbitrarily, namely can be in any set positions of PDCCH information; And the shared bit number of segment identification can change, namely can adopt certain bit to indicate, (bit information that does not need to show is indicated also can to carry out segmentation according to the information bit of certain number, for example: the information bit of 1-15 position is corresponding to some carrier waves, the information bit of back increases segment identification corresponding to the another one up-link carrier between 15 and 16 information bits).
After the technical scheme in implementing present embodiment, do not carry out the carrier wave indication owing to do not re-use CIF, avoided the increase of control signal expense; In addition, for the TPC information of the PUSCH channel of two up-link carriers, TPC-TPC-PUSCH-RNTI is identical; For the TPC information of the PUCCH channel of two up-link carriers, TPC-TPC-PUCCH-RNTI is identical, has therefore reduced the complexity of UE to the PDCCH blind Detecting.
For two up-link carriers of UE, can distribute identical tpc-index to carry out index (shown in the accompanying drawing 6 left figure), also can distribute different tpc-index to carry out index (shown in the accompanying drawing 6 right figure).For plural up-link carrier number, can adopt a plurality of segment identifications, for example three up-link carriers of some uses then can use two segment identifications in PDCCH; Four up-link carriers can use three segment identifications.Just repeat no more at this.Adopt identical tpc-index can reduce the number that base station or RNC-radio networkcontrol issue parameter; And adopt different tpc-index can make the TPC information of the up channel of the different up-link carriers of carrying UE have greater flexibility.
Embodiment four
On the basis of embodiment three, the base station changes to CIF information with the segment identification among the PDCCH when carrying out semi-static data dispatch.In the accompanying drawing 7, the number of UE carrier aggregation is 2, for the TPC information of the up channel PUCCH/PUSCH of each up-link carrier, utilizes same PDCCH to carry transmission.CIF for the TPC information of different up-link carriers, can be added in certain fixed position between PDCCH in the base station when carrying out semi-static data dispatch.TPC information before this CIF is corresponding to some up-link carriers, and to utilize parametric t pc-index 1 which position of indication be the TPC information of this UE; TPC information behind this CIF is corresponding to the another one up-link carrier, and to utilize parametric t pc-index 2 which position of indication be the TPC information of this UE.For two up-link carriers of UE, can distribute identical tpc-index to be used to indicate TPC information (shown in the accompanying drawing 7 left figure), also can distribute different tpc-index to be used to indicate TPC information (shown in the accompanying drawing 7 right figure).For the TPC information of up PUCCH, by TPC-PUCCH-RNTI to the PDCCH scrambling; For the TPC information of up PUSCH by TPC-PUSCH-RNTI to the PDCCH scrambling, in order to distinguish TPC information corresponding to up PUCCH channel or PUSCH channel.The TPC information of PUCCH and PUSCH is carried to transmit by PDCCH and is informed UE.And corresponding to the TPC information of the up PUCCH channel of 2 up-link carriers, TPC-PUCCH-RNTI is identical; Corresponding to the TPC information of the up PUSCH channel of 2 up-link carriers, TPC-PUSCH-RNTI also is identical.
UE at first carries out descrambling according to scrambler to PDCCH after receiving the PDCCH information that is issued by the base station.If descrambling is consistent, then at first obtain the TPC information of the up channel of one of them carrier wave according to the position of tpc-index 1 indication, then according to CIF and tpc-index 2 obtain the another one carrier waves the TPC information of up channel.
Similarly, it is plural situation that technique scheme is equally applicable to carrier number, just repeats no more at this.
Carrier aggregation number at UE is in the situation of N, compared with prior art, needs to add N-1 CIF in the technical scheme among the embodiment four, lacks a CIF information than prior art.Owing to reduced the quantity of TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and lacked than CIF information used in the prior art, then not only reduced the complexity of UE blind Detecting, also reduced the expense of control signal.
Are apparatus structure schematic diagrames of transmission power control command of the present invention transmission referring to accompanying drawing 8, this device comprises and lays respectively at transmitting terminal and receiving terminal.
Base station or RNC-radio network control are that UE issues the parametric t pc-index relevant with the uplink transmit power control command.Identical tpc-index or different tpc-index are set.
Transmitting terminal comprises, control module 801 and scrambling module 802.
Control module 801, the TPC information of the up channel that transmits each up-link carrier according to predetermined order and position carry at PDCCH; Be used in number successively continuous bearing or the discontinuous carrying of described PDCCH according to carrier wave, but according to default rule carrying, and the bit number of described TPC information is identical; Segment identification is set between carrier wave, and described segment identification is sequentially distinguished the original position of described tpc-index; CIF is set between carrier wave, and described CIF distinguishes the original position of described tpc-index; When TPC-PUSCH-RNTI has two at least, it is identical that described control module 801 arranges described TPC-PUSCH-RNTI, and when TPC-PUCCH-RNTI has two at least, it is identical that described control module 801 arranges described TPC-PUCCH-RNTI.
Described receiving terminal comprises, descrambling module 803 and message module 804.
Descrambling module 803 utilizes TPC-PUSCH-RNTI to described PDCCH descrambling, utilizes TPC-PUCCH-RNTI to described PDCCH descrambling;
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for transmission power control command transmission, base station or radio resource controller RNC-radio network control are that terminal UE issues the parametric t pc-index relevant with the uplink transmit power control command, it is characterized in that the method comprises:
Physical downlink control channel PDCCH is controlled TPC information according to the through-put power of the up channel that predetermined order and position carry are transmitted each up-link carrier;
Describedly comprise according to predetermined order and position carry that carry successively according to the number of carrier wave, the bit number of described TPC information is identical, and the interval of adjacent carrier is identical;
For the TPC information of Physical Uplink Shared Channel PUSCH, utilize Physical Uplink Shared Channel scrambler TPC-PUSCH-RNTI that PDCCH is carried out scrambling; For the TPC information of Physical Uplink Control Channel PUCCH, utilize Physical Uplink Control Channel scrambler TPC-PUCCH-RNTI that PDCCH is carried out scrambling, and described PDCCH is sent to UE.
2. the method for described transmission power control command transmission according to claim 1 is characterized in that further comprise segment identification between the described up-link carrier, described segment identification is distinguished the original position of described tpc-index.
3. the method for described transmission power control command transmission according to claim 1 is characterized in that further comprise carrier wave indication information CIF between the described up-link carrier, described CIF distinguishes the original position of described tpc-index.
4. according to claim 2 or the method for 3 described transmission power control commands transmission, it is characterized in that when TPC-PUSCH-RNTI has two at least, described TPC-PUSCH-RNTI is identical, when TPC-PUCCH-RNTI has two at least, described TPC-PUCCH-RNTI is identical.
5. the method for the described transmission power control command transmission of arbitrary claim is characterized in that described tpc-index is identical according to claim 1-4.
6. the method for the described transmission power control command transmission of arbitrary claim is characterized in that described tpc-index is different according to claim 1-4.
7. the device of transmission power control command transmission, base station or radio resource controller RNC-radio network control are that terminal UE issues and uplink transmit power control parametric t pc-index, it is characterized in that this device comprises:
Transmitting terminal, the through-put power control TPC information of the up channel that transmits each up-link carrier according to predetermined order and position carry in physical downlink control channel PDCCH; For the TPC information of Physical Uplink Shared Channel PUSCH, utilize Physical Uplink Shared Channel scrambler TPC-PUSCH-RNTI that PDCCH is carried out scrambling; For the TPC information of Physical Uplink Control Channel PUCCH, utilize Physical Uplink Control Channel scrambler TPC-PUCCH-RNTI that PDCCH is carried out scrambling;
Receiving terminal, utilize TPC-PUSCH-RNTI to described PDCCH descrambling, utilize TPC-PUCCH-RNTI to described PDCCH descrambling, described receiving terminal further obtains described TPC information according to predetermined order by the position that described tpc-index indexes the upper corresponding TPC information of described PDCCH;
Described transmitting terminal comprises,
Control module is in the TPC information of PDCCH according to the up channel of predetermined order and up each carrier wave of position carry transmission;
Scrambling module for the TPC information of PUSCH, utilizes TPC-PUSCH-RNTI that PDCCH is carried out scrambling; For the TPC information of PUCCH, utilize TPC-PUCCH-RNTI that PDCCH is carried out scrambling;
Described receiving terminal comprises,
Descrambling module utilizes TPC-PUSCH-RNTI to described PDCCH descrambling, utilizes TPC-PUCCH-RNTI to described PDCCH descrambling;
Message module, the position by described tpc-index indexes the corresponding TPC information of the upper receiving terminal of described PDCCH further obtains described TPC information according to predetermined order carrying;
Described control module is carried successively for controlling the number of described PDCCH according to carrier wave, and the bit number of described TPC information is identical, and the interval of adjacent carrier is identical.
8. the device of described transmission power control command transmission according to claim 7 is characterized in that described control module is further used for, and segment identification is set between up-link carrier, and described segment identification is distinguished the original position of described tpc-index.
9. the device of described transmission power control command transmission according to claim 7 is characterized in that described control module is further used for, and carrier wave indication information CIF is set between up-link carrier, and described CIF distinguishes the original position of described tpc-index.
10. according to claim 7 or the device of 8 described transmission power control commands transmission, it is characterized in that, described control module is further used for, when TPC-PUSCH-RNTI has two at least, it is identical that described TPC-PUSCH-RNTI is set, when TPC-PUCCH-RNTI has two at least, it is identical that described TPC-PUCCH-RNTI is set.
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| CN104105186B (en) * | 2013-04-03 | 2018-03-02 | 电信科学技术研究院 | A kind of method, apparatus and system for carrying out Power Control |
| CN105794280B (en) * | 2013-12-05 | 2019-05-31 | Lg 电子株式会社 | The method and apparatus of uplink transmission power are controlled in wireless access system |
| US10659207B2 (en) * | 2017-05-15 | 2020-05-19 | Qualcomm Incorporated | Uplink power control in new radio (NR) |
| CN109963329B (en) * | 2017-12-25 | 2022-08-09 | 成都鼎桥通信技术有限公司 | Method and system for sending uplink power control command in LTE cell |
| CN111615182B (en) * | 2019-04-26 | 2023-12-01 | 维沃移动通信有限公司 | Power control method and equipment |
| WO2020227152A1 (en) | 2019-05-03 | 2020-11-12 | Apple Inc. | Closed loop power control for pusch |
| WO2023004740A1 (en) * | 2021-07-30 | 2023-02-02 | Lenovo (Beijing) Limited | Group common tpc command for ul transmission in multi-trp |
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