CN104105186A - Method, device and system for performing power control - Google Patents

Method, device and system for performing power control Download PDF

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Publication number
CN104105186A
CN104105186A CN201310116435.8A CN201310116435A CN104105186A CN 104105186 A CN104105186 A CN 104105186A CN 201310116435 A CN201310116435 A CN 201310116435A CN 104105186 A CN104105186 A CN 104105186A
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China
Prior art keywords
link
power control
transmitting power
dci
subscriber equipment
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CN201310116435.8A
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CN104105186B (en
Inventor
彭莹
陈文洪
高秋彬
赵锐
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201310116435.8A priority Critical patent/CN104105186B/en
Priority to PCT/CN2014/074614 priority patent/WO2014161484A1/en
Publication of CN104105186A publication Critical patent/CN104105186A/en
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Publication of CN104105186B publication Critical patent/CN104105186B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC

Abstract

The invention discloses a method, a device and a system for performing power control, which solve the problem that the current power control order cannot be distinguished to adjust the emission power of a user device in D2D communication or to adjust the emission power of the user equipment in N2D communication. The method comprises steps of producing DCI by network side equipment, wherein the DCI carries user device emission power control information needed by power emission control performed on a D2D link and / or a N2D link by at least one D2D user device supporting D2D communication, transmitting the produced DCI to the D2D user device and instructing D2D user device to perform emission power control through the DCI by the link, wherein the link comprises D2D link and/ or N2D link. As a result, the problem is solved.

Description

A kind of method, Apparatus and system that carries out power control
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method, Apparatus and system that carries out power control.
Background technology
In traditional cellular telecommunication art, two subscriber equipment (User Equipment, UE) the data communication flow process between is shown in Figure 1, and as can be seen from Figure 1, the business such as the voice-and-data of two subscriber equipmenies are through resident separately eNB(evolution base station) and core net carry out alternately.
User is to user (Device-to-Device, D2D), it is the straight-through technology of subscriber equipment, refer to that contiguous subscriber equipment can carry out the mode of transfer of data in short range by direct connected link, do not need to forward by Centroid (being base station), its data communication flow process is shown in Figure 2.Short haul connection feature and the direct communication mode of D2D technology itself make it have following advantage:
1) subscriber equipment carrying out direct communication in close range mode can realize higher data rate, lower delay and lower power consumption;
2) utilize the subscriber equipment of extensive distribution in network and the short distance feature of D2D communication link, can realize effective utilization of frequency spectrum resource;
3) the direct communication mode of D2D can adapt to share demand as the local data of the business such as wireless peer-to-peer network (Peer to Peer, P2P), and the data, services with flexible adaptation ability is provided;
4) D2D direct communication mode can utilize the huge and widely distributed communication user equipment of quantity in network to expand the coverage of network.
LTE D2D technology refers to that being operated in Long Term Evolution (Long Term Evolution, LTE) authorizes the D2D that is subject to LTE network control in frequency range to communicate by letter.Can give full play on the one hand the advantage of D2D technology, the control of LTE network simultaneously also can overcome some problems of traditional D2D technology, for example, disturb uncontrollable etc.The introducing of LTE D2D characteristic will make the direction evolution of (Universal Connectivity Technology) from simple wireless mobile cellular telecommunication art towards " general interconnection technique " of LTE technology.
Be different from cellular communication, in D2D communication, be also subscriber equipment to the node of subscriber equipment transmitting data, adjust the transmitting power consumption that can reduce this subscriber equipment of the transmitting power of subscriber equipment, reduce in community and the interference of minizone, and reach the required transmission energy of quality of service (Quality of Service, QoS).Can find from foregoing description, in D2D communication, the adjustment of the transmitting power of subscriber equipment is similar to the adjustment of up link in LTE cellular communication, can accumulate adjustment transmitting power by the power control command of network side.Introduce the relevant knowledge of the adjustment of up link in LTE cellular communication below.
One, LTE up-link power control
The control of LTE up-link power is the combination of open-loop compensation and closed-loop control mechanism, the former means that the transmitting power of subscriber equipment depends on downlink path loss, and the latter makes network side can directly adjust by the power control command of clear and definite downlink transfer the through-put power of subscriber equipment.In fact, these power control commands are that network side is according to the measurement of the ascending power receiving is obtained.The power control command of Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) can offer subscriber equipment by following two modes:
In each descending scheduling request, comprise a power control command, when subscriber equipment is scheduled clearly on down link, all can receive power control signal at every turn; In this case, power control command uses one or more Cell Radio Network Temporary Identifier/Identity, Cell-RNTI by this UE (Cell-Radio Network Temporary Identifier, C-RNTI) scrambling has a Downlink Control Information (Downlink Control Information, DCI) Physical Downlink Control Channel of form (format) 1A/1B/1D/1/2A/2/2B/2C/2D (Physical Downlink Control Channel, PDCCH) provide, unless UE receives (Discontinuous Reception, DRX) state in noncontinuity;
Power control command also can be provided by special PDCCH, and this special PDCCH can be simultaneously for multiple UE provide power control command, and it adopts the PDCCH of DCI form 3/3A.This class power control command normally the cycle send, be used for regulating the transmitting power of PUCCH, for example, before uplink signal-channel quality reports.Under semi-static scheduling, can use, in this case, the uplink of Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) and PUCCH does not have display scheduling to distribute/authorize yet.
In the time that PDCCH is configured to DCI form 3, each power control command comprises 2bits, and its transmitting power is adjusted step-length referring to table 1; In the time that PDCCH is configured to DCI form 3A, each power control command comprises 1bit, and its transmitting power is adjusted step-length referring to table 2, in this situation, utilizes single PDCCH to carry out power control to the subscriber equipment of twice quantity.Here the cyclic redundancy check (CRC) of PDCCH (Cyclic Redundancy Check, CRC) TPC-PUCCH-RNTI that position is notified by high level organizes subscriber equipment for this and carries out scrambling, select which transmitting power control (Transmit Power Control, TPC) command field by higher level parameters TPC-Index(TPC index for each subscriber equipment) determine.
TPC command field and adjusted value δ in table 1:DCI format1A/1B/1D/1/2A/2B/2C/2D/2/3 pUCCHcorresponding relation
TPC command field in DCI format3A δ PUCCH[dB]
0 -1
1 1
TPC command field and adjusted value δ in table 2:DCI format3A pUCCHcorresponding relation
In PUSCH transmission situation, at uplink scheduling authorization but not descending scheduling in distributing, comprised direct Power Control order and dynamically controlled.This is because of the situation except semi-persistent scheduling, before PUSCH transmission, can have a uplink scheduling authorization DCI form 0/4.Similar with the power control of PUCCH, be also multistage for the power control command of PUSCH.In addition, on special PDCCH, use DCI form 3/3A that the power control of clear and definite PUSCH is provided, can provide power control command for multiple subscriber equipmenies so simultaneously.These power control commands can use for the PUSCH transmission that uses semi-persistent scheduling.Concrete transmitting power is adjusted step-length referring to table 3 and table 4.Now, the TPC-PUCCH-RNTI that the CRC position of PDSCH is notified by high level carries out scrambling for this group subscriber equipment, selects which TPC command field to be determined by higher level parameters TPC-Index for each subscriber equipment.
Table 3
TPC command field in DCI form 3A The δ of accumulation mode PUSCH,c[dB]
0 -1
1 1
Table 4
Two, LTE power division professional format
DCI format3, adopt the PUCCH of 2bit-TPC and the TPC order (command) of PUSCH group for transmitting one group, information bit after its length and format0 bit padding is equal in length, and under this form, the bit length that information field is corresponding and implication ginseng are shown in Table 5.
Information field Bit number Implication and explanation
TPC?command1 2 Power control command 1
TPC?command2 2 Power control command 2
TPC?command3 2 Power control command 3
…… …… ……
TPC?command?N 2 Power control command N
The format description of table 5:DCI format3
Wherein, l format0the length of the payload (payload) when equaling format0 and being mapped to public search space before additional CRC, comprises extra order.The parameter TPC-Index being provided by high level determines the index (index) of the TPC order that each UE is corresponding.If need to mend one 0 to DCI format3 end.
DCI format3A, adopts the PUCCH of 1bit-TPC and the TPCcommand of PUSCH group for transmitting one group.Under this form, the bit length that information field is corresponding and implication ginseng are shown in Table 6.
Information field Bit number Implication and explanation
TPC?command1 1 Power control command 1
TPC?command2 1 Power control command 2
TPC?command3 1 Power control command 3
…… …… ……
TPC?command?M 1 Power control command M
The format description of table 6:DCI format3A
Wherein, M=L format0, L format0the length of the payload (payload) when equaling format0 and being mapped to public search space before additional CRC, comprises extra order.The parameter TPC-Index being provided by high level determines the index of the TPC order that given UE is corresponding.
At present, subscriber equipment is in carrying out D2D communication, under the network coverage, still can keep the proper communication of its Cellular Networks, this cannot distinguish the power control command of network side is for adjusting the transmitting power of this subscriber equipment in D2D communication, or the transmitting power of communicating by letter to subscriber equipment (Network to Device, N2D) in (N2D communication is cellular communication) at network for adjusting this subscriber equipment.
Summary of the invention
The embodiment of the present invention provides a kind of method, Apparatus and system that carries out power control.For adjusting the transmitting power of subscriber equipment in D2D communication for solving that the power control command of the network side that prior art exists cannot distinguish, or for adjusting the problem of subscriber equipment in the transmitting power of N2D communication.
The embodiment of the present invention provides a kind of method of carrying out power control, comprising:
Network equipment generates Downlink Control Information DCI, carries at least one and support subscriber equipment to subscriber equipment N2D link, to carry out the required user equipment transmitting power control information of transmitting power control at D2D link and/or network to the D2D subscriber equipment of subscriber equipment D2D communication in described DCI;
Described network equipment sends the DCI generating to described D2D subscriber equipment, and indicates described D2D subscriber equipment to carry out the link of transmitting power control by described DCI, and described link comprises D2D link and/or N2D link.
The embodiment of the present invention provides a kind of method of carrying out power control, comprising:
Subscriber equipment receives the DCI that network equipment sends, and is determined and self carried out the link of transmitting power control by described DCI, and described link comprises D2D link and/or N2D link;
Described subscriber equipment, according to the user equipment transmitting power control information of carrying in described DCI, on subframe n+k, carries out transmitting power control to definite link, wherein, n is the subframe that described subscriber equipment receives described DCI, and k is default sub-frame offset, and k is not less than 4 positive integer.
The embodiment of the present invention provides a kind of network equipment, comprising:
The first processing module, generates Downlink Control Information DCI, carries at least one and support the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in described DCI;
The second processing module, for send the DCI generating to described D2D subscriber equipment, and indicates described D2D subscriber equipment to carry out the link of transmitting power control by described DCI, and described link comprises D2D link and/or N2D link.
The embodiment of the present invention provides a kind of subscriber equipment, comprising:
Receiver module, the DCI sending for receiving network equipment, and determine and self carry out the link of transmitting power control by described DCI, described link comprises D2D link and/or N2D link;
Power regulation module, for the corresponding user equipment transmitting power control information of carrying according to described DCI, on subframe n+k, definite link is carried out to transmitting power control, wherein, n is the subframe that described subscriber equipment receives described DCI, and k is default sub-frame offset, and k is not less than 4 positive integer.
The embodiment of the present invention provides a kind of communication system, comprising:
Network equipment, for generating Downlink Control Information DCI, carries at least one and supports the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in described DCI; And send the DCI generating to described D2D subscriber equipment, and indicate described D2D subscriber equipment to carry out the link of transmitting power control by described DCI;
Subscriber equipment, the DCI sending for receiving network equipment, and determine and self carry out the link of transmitting power control by described DCI; And according to the corresponding user equipment transmitting power control information of carrying in described DCI, on subframe n+k, definite link is carried out to transmitting power control, wherein, n is the subframe that described subscriber equipment receives described DCI, and k is sub-frame offset, and k is not less than 4 positive integer;
Wherein, described link comprises D2D link and/or N2D link.
In the embodiment of the present invention, network equipment generates DCI, carries at least one and support the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in this DCI; And send the DCI generating to D2D subscriber equipment, and the link that carries out transmitting power control by this DCI instruction D2D subscriber equipment; Make to have subscriber equipment that cellular communication communicates by letter with D2D in the time receiving this DCI simultaneously, the power control command that can distinguish in this DCI is for adjusting subscriber equipment in D2D communication transmitting power, or the transmitting power while carrying out transmitting uplink data for adjusting this subscriber equipment to network side, the technical scheme that the embodiment of the present invention provides has kept lower signaling consumption, and can not increase the blind check complexity of terminal.
Brief description of the drawings
Fig. 1 is the data flow schematic diagram of terminal communication in cellular network in background technology;
Fig. 2 is the data flow schematic diagram of the direct-connected communication of terminal in background technology;
Fig. 3 is the schematic diagram of the direct-connected communication of embodiment of the present invention subscriber equipment;
The network equipment that Fig. 4 provides for the embodiment of the present invention carries out the method flow schematic diagram of power control;
The user equipment side that Fig. 5 provides for the embodiment of the present invention is carried out the method flow schematic diagram of power control;
The structural representation of the network equipment that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the subscriber equipment that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the communication system that Fig. 8 provides for the embodiment of the present invention.
Embodiment
First the technical term relating in the embodiment of the present invention is illustrated as follows.
Subscriber equipment in the embodiment of the present invention comprises D2D subscriber equipment and N2D subscriber equipment, wherein, D2D subscriber equipment refers to have the subscriber equipment that carries out communication capacity between subscriber equipment (being D2D characteristic), and N2D subscriber equipment refers to tradition (legacy) subscriber equipment of not supporting D2D characteristic.
D2D Link(D2D link in the embodiment of the present invention) be straight-through link between Device-to-Device Link(subscriber equipment); N2D Link(N2D link, i.e. link in Cellular Networks) be the straight-through link of Network-to-Device Link(network and subscriber equipment); Specifically shown in Figure 3, wherein, D2D-PDSCH is the channel of the carrying data in D2D communication, for communicating transfer of data between D2D subscriber equipment; D2D-PUCCH is the channel that carries the control information of feedback information or scheduling of resource requirement in D2D communication, for carrying out if desired information feedback between D2D subscriber equipment.
It should be noted that, be that two UE carry out D2D transmission in Fig. 3, can be also that multiple UE transmit as required, and such as a UE sends, multiple UE receive;
In the embodiment of the present invention, D2D subscriber equipment carries out transmitting power control and refers to the adjustment to the transmitting power on the PUCCH/PUSCH in Cellular Networks on N2D link; This D2D subscriber equipment carries out transmitting power control and refers to the adjustment of the transmitting power on the channel of control information of channel/carrying feedback information to the carrying data in D2D communication or scheduling of resource requirement on D2D link.
In declarative procedure below, first describe from the enforcement of network side and user equipment side respectively, implement to describe from the cooperation of network side and user equipment side again, but this does not also mean that the two must coordinate enforcement, in fact, separate while implementing when network side and user equipment side, also solved respectively in network side, the existing problem of user equipment side, when just the two is combined with, can obtain better technique effect.
A kind of method of carrying out power control shown in Figure 4, the embodiment of the present invention provides, the method comprises the following steps:
Step 41, network equipment generate DCI, carry at least one and support the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in this DCI;
Step 42, network equipment send the DCI generating to D2D subscriber equipment, and indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control by this DCI, and this link comprises D2D link and/or N2D link.
In the embodiment of the present invention, network equipment by N2D link for the descending control signaling DCI(of power control referred to as power control signal) at least one D2D subscriber equipment provides its emissive power control command required in D2D communication (TPC command), be used for adjusting the transmitting power of D2D link channel.
In force, the D2D subscriber equipment that carries out transmitting power control in D2D communication is: in D2D communication as the D2D subscriber equipment of transmitting terminal.
In force, DCI is divided into first kind DCI and Equations of The Second Kind DCI, wherein, first kind DCI has resource scheduling information and is only that a subscriber equipment (comprising D2D subscriber equipment and N2D subscriber equipment) provides required transmitting power control TPC order (being called again the DCI with data resource scheduling), Equations of The Second Kind DCI can provide required TPC order (being called again independently DCI) for multiple subscriber equipmenies (comprising D2D subscriber equipment and N2D subscriber equipment), in TPC order, carry network equipment and be that this subscriber equipment determines carries out the required user equipment transmitting power control information of transmitting power control.
Preferably, the form that first kind DCI adopts comprises DCI form 1A, DCI form 1B, DCI form 1D, DCI form 1, DCI form 2A, DCI form 2B, DCI form 2C, DCI form 2D and DCI form 2;
The form that Equations of The Second Kind DCI adopts comprises DCI form 3A and DCI form 3.
In force, in step 41, the required user equipment transmitting power control information on D2D link and/or N2D link of D2D subscriber equipment comprises transmitting power adjustment step-length.
Further, network equipment is according to the channel information in the D2D communication of D2D subscriber equipment feedback, and the channel information of the downlink communication of the interfere information of the uplink communication that in N2D communication (being Cellular Networks), network equipment measures or D2D subscriber equipment feedback, determine the required user equipment transmitting power control information on D2D link of this D2D subscriber equipment, specifically referring to 3GPP TS36.213 agreement.
Wherein, channel information can be channel condition information (Channel State Information, CSI), Reference Signal Received Power (Reference Signal Received Power, RSRP), one or more information in Reference Signal Received Quality (Reference Signal Received Quality, RSRQ).
In force, in step 41, when network equipment generates corresponding DCI, also need to determine the signaling mode of this DCI, the form that this DCI adopts, specifically referring to 3GPP TS36.212 agreement; If this DCI is Equations of The Second Kind DCI, also need to determine the D2D group of user equipments that uses this DCI to indicate.
In force, in step 42, network equipment indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control by DCI, comprises following three kinds of modes:
Mode A, network equipment, by this DCI is carried out to the RNTI that CRC scrambling is used, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control;
Concrete, if this DCI is first kind DCI, network equipment is by carrying out to this DCI the RNTI that CRC scrambling is used, the link of indicating the indicated D2D subscriber equipment of this DCI to carry out transmitting power control;
If this DCI is Equations of The Second Kind DCI, network equipment is by carrying out to this DCI the RNTI that CRC scrambling is used, the link of indicating the indicated D2D group of user equipments of this DCI to carry out transmitting power control, wherein, the link that this D2D group of user equipments is carried out transmitting power control is identical.
Further, be a RNTI if this DCI is carried out to the RNTI that CRC scrambling uses, network equipment indicates corresponding D2D subscriber equipment on N2D link, to carry out transmitting power control;
If it is the 2nd RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, network equipment indicates corresponding D2D subscriber equipment on D2D link, to carry out transmitting power control.
Preferably, a RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI.
Concrete, if it is D2D-TPC-PCCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, network equipment indicates the channel of the control information that carrying feedback information that corresponding D2D subscriber equipment sends self on D2D link or scheduling of resource require to carry out transmitting power control;
If it is D2D-TPC-PSCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, network equipment indicates the channel of the carrying data that corresponding D2D subscriber equipment sends self on D2D link to carry out transmitting power control;
If it is TPC-PUCCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, the PUCCH that network equipment indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control;
If it is TPC-PUSCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, the PUSCH that network equipment indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control.
For Equations of The Second Kind DCI, the identical situation of link that mode A is applicable to the indicated D2D group of user equipments of this DCI carries out transmitting power control, be which does not allow the power control on power control and the D2D link on N2D link to indicate by a DCI, also do not allow the D2D subscriber equipment that carries out transmitting power control on N2D link and D2D link by a DCI instruction simultaneously.
In mode A, D2D subscriber equipment can be according to this DCI being carried out to power control signal that RNTI that CRC scrambling uses judges that network equipment sends for which link, which needs the RNTI resource outside occupying volume, the link that carries out transmitting power control with instruction D2D subscriber equipment, but can not increase the blind check number of times of D2D subscriber equipment.
Based on mode A, the method for the embodiment of the present invention also comprises:
Network equipment sends to each D2D subscriber equipment by high-level signaling by a RNTI and the 2nd RNTI.
Wherein, high-level signaling can be Radio Resource control (Radio Resource Control, RRC) or media access control (Media Access Control, MAC) signaling.
Mode B, network equipment, by the information field of DCI, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control;
Further, mode B comprises again following two kinds of modes:
If this DCI of mode B1 for first kind DCI(be that power control command that network equipment provides for certain D2D subscriber equipment is included in the DCI with data resource scheduling): the link of the information field instruction that the link that network equipment indicates corresponding D2D subscriber equipment to carry out transmitting power control is this DCI;
Wherein, in the information field of this DCI, comprise the customizing messages territory that is used to indicate the link information that this DCI is corresponding.
If the power control command that this DCI of mode B2 provides for D2D group of user equipments for Equations of The Second Kind DCI(is network equipment is DCI independently): network equipment indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in DCI.
Concrete, in mode B2, the information field after reshuffling in DCI has different implications from the information field of this DCI defining in existing 3GPP standard, and the information field after reshuffling in DCI can indicate D2D subscriber equipment to carry out the link of transmitting power control.
Further, in mode B2, the link that network equipment indicates corresponding D2D subscriber equipment to carry out transmitting power control by the information field after reshuffling in DCI comprises following mode:
Mode B21, network equipment use the bit information of assigned address in DCI, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control;
Based on mode B21, the information field after reshuffling in DCI comprises that multiple TPC command and one are used to indicate corresponding D2D subscriber equipment and carry out the TPC link of the link of transmitting power control.
Concrete, this assigned address can be the position of network side and terminal agreement, can be also that after being determined by network side, notice, to terminal, can also specify this assigned address in agreement, but must ensure that network side is consistent to the understanding of this assigned address with terminal;
The bit information of this assigned address can be a bit information in arbitrary TPC order in DCI; If this TPC order comprises at least two bit informations: can be indication information (being TPC link) by most significant bit information definition, all the other bit informations be obligate information; Also the bit information of lowest order can be defined as to this indication information, all the other bit informations are obligate information.
Preferably, network equipment is using a bit information of last TPC order in the information field of this DCI as TPC link.
For example, after the TPC command of the DCI that adopts DCI form 3 is reshuffled, can be using a bit information of a certain TPC order of information field in this DCI as TPC link, the link that this TPC link indicates corresponding D2D subscriber equipment to carry out transmitting power control is N2D link or D2D is link, because each TPC command of DCI form 3 comprises 2bits, can use wherein 1bit to indicate the link that carries out transmitting power control, remaining 1bit is reserved (Reserve), and table 7 has provided a specific implementation form of which;
Table 7
The number of users that can carry out transmission power control in table 7 is (L format0/ 2)-1, L format0for the bit length (being total bit number) of the information field of DCI form 0.
And for example, after the TPC command of the DCI to employing DCI form 3A reshuffles, using the bit information of arbitrary TPC order of information field in this DCI as TPC link, the specific implementation form that table 8 is which;
Table 8
The number of users that can carry out transmission power control in table 8 is (L format0-1) individual, L format0for the length of DCI form 0.
For Equations of The Second Kind DCI, be provided as the corresponding TPC-Index of D2D user device configuration by high level, with the TPC order of informing that this D2D subscriber equipment is corresponding.
Based on mode B21, accordingly, when the DCI instruction of receiving when D2D subscriber equipment is carried out transmitting power control to D2D link, if this D2D subscriber equipment determines that it is TPC-PUCCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment is determined and need to be carried out transmitting power control to the channel that carries the control information that feedback information or scheduling of resource require in D2D communication; If this D2D subscriber equipment determines that it is TPC-PUSCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment is determined and need to be carried out transmitting power control to the channel of the carrying data in D2D communication.
Below only provided two specific implementations under which, but the implementation of the mode B21 of the embodiment of the present invention is not limited to above-mentioned two embodiment.
Which is in the time that the information field of DCI is enough to the quantity of the D2D subscriber equipment that carries required instruction, do not need the RNTI resource outside occupying volume, and do not increase the blind check number of times of terminal, but which does not allow to indicate by a DCI subscriber equipment that carries out the subscriber equipment of transmitting power adjustment and carry out transmitting power adjustment on N2D link on D2D link simultaneously, do not allow to indicate the transmitting power adjustment of same D2D subscriber equipment on N2D link and the transmitting power adjustment on D2D link by a DCI simultaneously yet.
TPC order after reshuffling in mode B22, network equipment use DCI, the link that the user equipment transmitting power control information that instruction D2D subscriber equipment is required and this D2D subscriber equipment carry out transmitting power control;
Wherein, in the case of total bit number of the information field of this DCI is constant, the bit number of the each TPC order after reshuffling increases than the bit number of the each TPC order before reshuffling, thus the link that the each TPC order after making to reshuffle can indicate the required user equipment transmitting power control information of D2D subscriber equipment and this D2D subscriber equipment to carry out transmitting power control simultaneously.
Further, mode B22 comprises again following two kinds of implementations:
The bit number of mode B221, each TPC order after reshuffling increases setting multiple than the bit number of the each TPC order before reshuffling, wherein, the each TPC order after reshuffling comprises that be used to indicate D2D subscriber equipment carries out the first information of the required user equipment transmitting power control information of transmitting power control and be used to indicate this D2D subscriber equipment second information of carrying out the required user equipment transmitting power control information of transmitting power control on D2D link on N2D link;
Concrete, for Equations of The Second Kind DCI, the information field of existing DCI comprises multiple TPC orders, each TPC order can only be used to indicate a certain the user equipment transmitting power control information on link, and because the bit number of the each TPC order after reshuffling in embodiment of the present invention DCI has increased setting multiple, can make the user equipment transmitting power control information (being the first information) on a part of bit information instruction N2D link of the each TPC order after reshuffling in this DCI, user equipment transmitting power control information (i.e. the second information) on another part bit information instruction D2D link.
Preferably, user equipment transmitting power control information on high significance bit bit information instruction N2D link (or D2D link) in each TPC order after reshuffling in use DCI, the user equipment transmitting power control information on low order bit information instruction D2D link (or N2D link).
Double as example and describe taking the bit number of the each TPC order after reshuffling below, certainly, also can as required the bit length of each TPC order be increased to the multiple of other numerical value.
For example, under the constant prerequisite of total bit number of the information field of DCI, the bit length of each TPC command of the DCI of employing DCI form 3 is doubled, highest significant position (Most Significant Bit in TPC command after reshuffling, MSB) 2bits is used for representing the user equipment transmitting power control information on N2D link (or D2D link), least significant bit (Least Significant Bit, LSB) 2bits is used for representing the user equipment transmitting power control information on D2D link (or N2D link), wherein, table 9 is a specific implementation form of which,
Table 9
The quantity that can carry out the D2D subscriber equipment of transmitting power control in table 9 is L format0/ 4, L format0for the length of DCI form 0.
And for example, under the constant prerequisite of total bit number of the information field of DCI, the bit length of each TPC command of the DCI of employing DCI form 3A is doubled, highest significant position (Most Significant Bit in TPC command after reshuffling, MSB) 1bits is used for representing the user equipment transmitting power control information on N2D link (or D2D link), least significant bit (Least Significant Bit, LSB) 1bits is used for representing the user equipment transmitting power control information on D2D link (or N2D link), wherein, table 10 is a specific implementation form of which,
Table 10
The quantity that can carry out the D2D subscriber equipment of transmitting power control in table 10 is L format0/ 2, L format0for the length of DCI form 0.
Under which, in the time that the information field of DCI is enough to the quantity of the D2D subscriber equipment that carries required instruction, do not need the RNTI resource outside occupying volume, and do not increase the blind check number of times of terminal; In addition, for the group of user equipments of supporting D2D characteristic, which allows the subscriber equipment that need to carry out transmitting power adjustment on N2D link to indicate by a DCI with the subscriber equipment that need to carry out transmitting power adjustment on D2D link, also allow to indicate the transmitting power adjustment of same D2D subscriber equipment on N2D link and the transmitting power adjustment on D2D link by a DCI, but the number of users that every DCI can carry out transmitting power control has reduced.
The bit number of mode B222, each TPC order after reshuffling increases setting quantity than the bit number of the each TPC order before reshuffling, wherein, and the link that the bit information of this setting quantity is used to indicate D2D subscriber equipment carries out transmitting power control.
Concrete, for Equations of The Second Kind DCI, the information field of existing DCI comprises multiple TPC orders, each TPC order can only be used to indicate a certain the user equipment transmitting power control information on link, and the bit number of each TPC order after reshuffling in DCI due to the embodiment of the present invention has increased setting quantity, the each TPC order after reshuffling in this DCI comprises and is used to indicate the first bit information of a user equipment transmitting power control information on link and is used to indicate the second bit information that this link is N2D link or D2D link.
Increase 1bit as example describes taking the bit length of the each TPC order after reshuffling below, certainly, also can as required the bit number of each TPC order be increased to other numerical value.
For example, under the constant prerequisite of total bit number of the information field of DCI, the bit number of each TPC command of the DCI of employing DCI form 3 is increased to 1bit, the 1bit of this increase is for representing that this TPCcommand is used to indicate the user equipment transmitting power control information on user equipment transmitting power control information or the D2D link on N2D link, if this 1bit is " 0 ", indicate N2D link, if this 1bit is " 1 ", indicate D2D link.As shown in table 11, be a specific implementation form of which;
Table 11
The quantity that can carry out the D2D subscriber equipment of transmitting power control in table 11 is L format0/ 3, L format0for the length of DCI form 0.
And for example, under the constant prerequisite of total bit number of the information field of DCI, the bit number of each TPC command of the DCI of employing DCI form 3A is increased to 1bit, and the 1bit of this increase is for representing that this TPC command is used to indicate the user equipment transmitting power control information on user equipment transmitting power control information or the D2D link on N2D link.As shown in table 12, be a specific implementation form of which;
Table 12
The quantity that can carry out the D2D subscriber equipment of transmitting power control in table 12 is L format0/ 2, L format0for the length of DCI form 0.
Based on mode B22, accordingly, when the DCI instruction of receiving when D2D subscriber equipment is carried out transmitting power control to D2D link, if this D2D subscriber equipment determines that it is TPC-PUCCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the channel of the control information that the carrying feedback information that need to send self on D2D link or scheduling of resource require carries out transmitting power control; If this D2D subscriber equipment determines that it is TPC-PUSCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the channel of the carrying data that need to send self on D2D link carries out transmitting power control.
Below only provided two specific implementations under which, but the implementation of the mode B222 of the embodiment of the present invention is not limited to above-mentioned two embodiment.
Under which, in the time that the information field of DCI is enough to the quantity of the D2D subscriber equipment that carries required instruction, do not need the RNTI resource outside occupying volume, and do not increase the blind check number of times of terminal; In addition, for the group of user equipments of supporting D2D characteristic, which allows the subscriber equipment that need to carry out transmitting power adjustment on N2D link and the subscriber equipment that need to carry out transmitting power adjustment on D2D link to indicate by a DCI, but the number of users that every DCI can carry out transmitting power control has reduced.
Further, under mode B2, the method for the embodiment of the present invention also comprises:
Network equipment is notified the structure of the information field after reshuffling in D2D subscriber equipment DCI by high-level signaling.
Concrete, under mode B2, network equipment need to be notified the subscriber equipment with D2D characteristic, and it need to receive implication and be different from the form that is used to indicate the DCI of power control in N2D link.
If mode C DCI is the 2nd DCI, the TPC index (TPC-index) of network equipment by the each TPC order in predefined DCI and carry out the corresponding relation between the link of transmitting power control, indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control.
Concrete, because TPC index has defined the TPC order in this DCI, the TPC index of the TPC order for user device configuration is sent to this subscriber equipment by network equipment, this subscriber equipment is receiving after this TPC index, can know network equipment be self configuration be which the TPC order in this DCI, therefore, can predefine TPC index and carry out the corresponding relation between the link of transmitting power control, in the time of network equipment notifying user equipment TPC index, just can recessive notify this TPC order for N2D link or D2D link.
In force, mode C further comprises following two kinds of implementations:
Mode C1, for a DCI, network equipment is TPC index of each D2D user device configuration, and indicates this D2D subscriber equipment to carry out transmitting power control on N2D link or D2D link by this TPC index;
Under which, the TPC index of each TPC order of the predefined DCI of network equipment can be corresponding with N2D link, also can be corresponding with D2D link.
For example, if each TPC command is 2bits, a specific implementation of the corresponding relation between TPC-index and TPC link is as shown in table 13:
TPC-index 1 2 … 15
TPC?link N2D D2D … N2D
Table 13
And for example, if each TPC command is 1bits, a specific implementation of the corresponding relation between TPC-index and TPC link is as shown in table 14:
TPC-index 1 2 … 31
TPC?link N2D D2D … N2D
Table 14
Below only provided two specific implementations under which, but the implementation of the mode C of the embodiment of the present invention is not limited to above-mentioned two embodiment.
Accordingly, receive when D2D subscriber equipment the corresponding D2D link of TPC-index time, if this D2D subscriber equipment determines that it is TPC-PUCCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the channel of the control information that the carrying feedback information that need to send self on D2D link or scheduling of resource require carries out transmitting power control; If this D2D subscriber equipment determines that it is TPC-PUSCH-RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the channel of the carrying data that need to send self on D2D link carries out transmitting power control.
Mode C2, for a DCI, network equipment is each D2D user device configuration the one TPC index and the 2nd TPC index, and indicate this D2D subscriber equipment on N2D link, to carry out transmitting power control by a TPC index, and indicate this D2D subscriber equipment on D2D link, to carry out transmitting power control by the 2nd TPC index.
Concrete, network equipment is two TPC indexes of same D2D user device configuration, an i.e. TPC index (being designated as TPC-N2D-index) and the 2nd TPC index (being designated as TPC-D2D-index), wherein, each TPC index is all corresponding with N2D link, and each the 2nd TPC index is all corresponding with D2D link;
If network equipment is determined certain D2D subscriber equipment and only need to carry out transmitting power control on N2D link, only send a TPC index to this D2D subscriber equipment, or send a TPC index and the 2nd TPC index to this D2D subscriber equipment, and the 2nd TPC index is disable state (the 2nd TPC index can not obtain), accordingly, this D2D subscriber equipment is getting after a TPC index, transmitting power control is carried out in the TPC order corresponding according to a TPC index on N2D link;
If network equipment is determined certain D2D subscriber equipment and only need to carry out transmitting power control on D2D link, only send the 2nd TPC index to this D2D subscriber equipment, or send a TPC index and the 2nd TPC index to this D2D subscriber equipment, and a TPC index is disable state (a TPC index can not obtain), accordingly, this D2D subscriber equipment is getting after the 2nd TPC index, transmitting power control is carried out in the TPC order corresponding according to the 2nd TPC index on D2D link;
If network equipment is determined certain D2D subscriber equipment and need to be carried out transmitting power control on D2D link and N2D link, send a TPC index and the 2nd TPC index to this D2D subscriber equipment, accordingly, this D2D subscriber equipment is getting after a TPC index and the 2nd TPC index, the TPC order corresponding according to a TPC index, on N2D link, carry out transmitting power control, and the TPC order corresponding according to the 2nd TPC index, on D2D link, carry out transmitting power control.
For example, if each TPC command is 2bits, a specific implementation of the corresponding relation between TPC-N2D-index and TPC link is as shown in Table 15:
TPC-N2D-index 1 2 … 15
TPC?link N2D N2D … N2D
Table 15
A specific implementation of the corresponding relation between TPC-D2D-index and TPC link is shown in table 16:
TPC-D2D-index 1 2 … 15
TPC?link D2D D2D … D2D
Table 16
And for example, if each TPC command is 1bits, a specific implementation of the corresponding relation between TPC-N2D-index and TPC link is shown in table 17:
TPC-N2D-index 1 2 … 31
TPC?link N2D N2D … N2D
Table 17
A specific implementation of the corresponding relation between TPC-D2D-index and TPC link is shown in table 18:
TPC-D2D-index 1 2 … 31
TPC?link D2D D2D … D2D
Table 18
Under which, can indicate the transmitting power control on N2D link and the D2D link of subscriber equipment of same support D2D characteristic by a DCI simultaneously, wherein, the set of TPC-N2D-index and TPC-D2D-index supplementary set each other, specific implementation is determined by network side.
Further, based on mode C, the method for the embodiment of the present invention also comprises:
Network equipment is notified the predefined TPC index of D2D subscriber equipment by high-level signaling and is carried out the corresponding relation of the link of transmitting power control; Or,
Network equipment is notified the corresponding N2D link of D2D subscriber equipment the one TPC index and the corresponding D2D link of the 2nd TPC index by high-level signaling.
In the embodiment of the present invention, high-level signaling can be RRC signaling or MAC signaling.
In the embodiment of the present invention, which kind of way of realization link and each mode which kind of mode network equipment specifically adopts indicate D2D subscriber equipment to carry out transmitting power control specifically adopt, after can being determined by network equipment, notice is to D2D subscriber equipment, also can arrange by both party concrete indicating mode, or specify concrete indicating mode by agreement.
Based on above-described embodiment, the embodiment of the present invention also provides a kind of method of carrying out power control, and shown in Figure 5, the method comprises the following steps:
Step 51, subscriber equipment receive the DCI that network equipment sends, and are determined and self carried out the link of transmitting power control by this DCI, and this link comprises D2D link and/or N2D link;
Step 52, subscriber equipment, according to the corresponding user equipment transmitting power control information of carrying in this DCI, on subframe n+k, carry out transmitting power control to definite link, wherein, n is the subframe that subscriber equipment receives DCI, and k is default sub-frame offset, and k is not less than 4 positive integer.
Further, in step 51, subscriber equipment is determined the link that carries out transmitting power control of DCI instruction, specifically comprises following three kinds of methods:
Method A, subscriber equipment, according to DCI is carried out to the RNTI that CRC scrambling is used, are determined and self are carried out the link of transmitting power control;
Further, if subscriber equipment determines that it is a RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment is determined the link N2D link that self carries out transmitting power control;
If subscriber equipment determines that it is the 2nd RNTI that this DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment is determined the link D2D link that self carries out transmitting power control.
Preferably, a RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI.
Concrete, if subscriber equipment determines that it is D2D-TPC-PCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If subscriber equipment determines that it is D2D-TPC-PSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the channel of the carrying data that on D2D link, self sent carries out transmitting power control;
If subscriber equipment determines that it is TPC-PUCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the PUCCH on N2D link, self being sent carries out transmitting power control;
If subscriber equipment determines that it is TPC-PUSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, this subscriber equipment determines that the PUSCH on N2D link, self being sent carries out transmitting power control.
Further, subscriber equipment determine self carry out the link of transmitting power control before, also comprise:
The D2D subscriber equipment that is used to indicate that subscriber equipment reception network equipment configures by high-level signaling carries out a RNTI of transmitting power control and is used to indicate D2D subscriber equipment the 2nd RNTI that carries out transmitting power control on D2D link on N2D link.
It should be noted that, because method A is corresponding with the mode A of above-mentioned network equipment, specifically, referring to the description of mode A, repeat no more herein.
Method B, subscriber equipment, according to the information field of the DCI receiving, are determined and self are carried out the link of transmitting power control;
Further, method B comprises again following two kinds of methods:
If the DCI that method B1 receives is first kind DCI: subscriber equipment is determined the link that self carries out the information field instruction that the link of transmitting power control is this DCI;
Wherein, in this first kind DCI, comprise the information field that is used to indicate the link information that this DCI is corresponding.
It should be noted that, method B1 is corresponding with the mode B1 of above-mentioned network equipment, specifically, referring to the description of mode B1, repeats no more herein.
If the DCI that method B2 receives is Equations of The Second Kind DCI: subscriber equipment, according to the information field after reshuffling in this DCI, is determined and self carried out the link of transmitting power control.
Further, method B2 comprises again following two kinds of methods:
Method B21, subscriber equipment, according to the bit information of assigned address in this DCI, are determined and self are carried out the link of transmitting power control;
Because method B21 is corresponding with the mode B21 of above-mentioned network equipment, specifically, referring to the description of mode B21, repeat no more herein.
Method B22, subscriber equipment, according to the bit information of the TPC order after middle configuration in this DCI, are determined the link that self carries out the required user equipment transmitting power control information of transmitting power control and self carry out transmitting power control.
Concrete, in the case of total bit number of the information field of this DCI is constant, the bit number of the each TPC order after reshuffling increases than the bit number of reshuffling front each TPC order.
As a kind of implementation, the bit number of the each TPC order after reshuffling increases and sets multiple than the bit number of the each TPC order before reshuffling, wherein, the each TPC order after reshuffling comprises that be used to indicate D2D subscriber equipment carries out the first information of the required user equipment transmitting power control information of transmitting power control and be used to indicate this D2D subscriber equipment second information of carrying out the required user equipment transmitting power control information of transmitting power control on D2D link on N2D link;
As another kind of implementation, the bit number of the each TPC order after reshuffling increases and sets quantity, the link that the bit information of this setting quantity is used to indicate D2D subscriber equipment carries out transmitting power control than the bit number of the each TPC order before reshuffling.
Because method B22 is corresponding with the mode B22 of above-mentioned network equipment, specifically, referring to the description of mode B22, repeat no more herein.
In force, based on method B2, if the DCI that subscriber equipment receives indicates this subscriber equipment to carry out transmitting power control on D2D link:
When subscriber equipment is determined when this DCI is carried out to RNTI that CRC scrambling uses for TPC-PUCCH-RNTI, subscriber equipment is determined on the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require and is carried out transmitting power control;
When subscriber equipment is determined when this DCI is carried out to RNTI that CRC scrambling uses for TPC-PUSCH-RNTI, subscriber equipment is determined on the channel of the carrying data that on D2D link, self sent and is carried out transmitting power control.
In force, based on method B2, if the DCI that subscriber equipment receives indicates this subscriber equipment to carry out transmitting power control on N2D link:
When subscriber equipment is determined when this DCI is carried out to RNTI that CRC scrambling uses for TPC-PUCCH-RNTI, subscriber equipment is determined on N2D on the PUCCH to self sending link and is carried out transmitting power control;
When subscriber equipment is determined when this DCI is carried out to RNTI that CRC scrambling uses for TPC-PUSCH-RNTI, subscriber equipment is determined on N2D on the PUSCH to self sending link and is carried out transmitting power control.
Further, based on method B2, the method that the embodiment of the present invention provides also comprises:
Subscriber equipment receives network equipment, and to notify this DCI by high-level signaling be the structure of the information field after reshuffling in this DCI.
Method C, subscriber equipment are according to the TPC index of the each TPC order in predefined DCI and carry out the corresponding relation between the link of transmitting power control, determine and self carry out the link of transmitting power control.
In force, method C further comprises:
Method C1, subscriber equipment, according to TPC index and the corresponding relation of link that carries out transmitting power control, determine link corresponding to TPC index receiving.
Because method C1 is corresponding with the mode C1 of above-mentioned network equipment, specifically, referring to the description of mode C1, repeat no more herein.
If method C2 subscriber equipment receives a TPC index, this subscriber equipment is determined and self need on N2D link, be carried out transmitting power control; If subscriber equipment receives the 2nd TPC index, this subscriber equipment is determined and self need on D2D link, be carried out transmitting power control.
Because method C2 is corresponding with the mode C2 of above-mentioned network equipment, specifically, referring to the description of mode C2, repeat no more herein.
In force, based on method C, if the corresponding D2D link of the TPC index that subscriber equipment receives, or this subscriber equipment receives the 2nd TPC index:
If subscriber equipment determines that it is TPC-PUCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, subscriber equipment determines that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If subscriber equipment determines that it is TPC-PUSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, subscriber equipment determines that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
In force, based on method C, if the corresponding N2D link of the TPC index that subscriber equipment receives, or this subscriber equipment receives a TPC index:
If subscriber equipment determines that it is TPC-PUCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, subscriber equipment determines that the PUCCH on N2D link, self being sent carries out transmitting power control;
If subscriber equipment determines that it is TPC-PUSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, subscriber equipment determines that the PUSCH on N2D link, self being sent carries out transmitting power control.
In force, based on method C, the method that the embodiment of the present invention provides also comprises:
Subscriber equipment receive the predefined DCI that notifies by high-level signaling of network equipment each TPC order TPC index and carry out the corresponding relation of the link of transmitting power control; Or,
Subscriber equipment receives the corresponding N2D link of a TPC index and the corresponding D2D link of the 2nd TPC index that network equipment is notified by high-level signaling.
In force, in step 52, subscriber equipment, on subframe n+k, carries out transmitting power control to definite link, comprising:
If transmitting power control is carried out in DCI instruction on D2D link, subscriber equipment is on subframe n+k, the channel of the channel to the carrying data that self send on D2D link or the control information to the carrying feedback information self sending on D2D link or scheduling of resource requirement carries out transmitting power control, wherein, k is default sub-frame offset, and k gets the positive integer that is equal to or greater than 4.
That is to say, because the subframe of communicating by letter for D2D may not be continuous subframe, therefore, when D2D subscriber equipment carries out transmitting power control on D2D link, subframe n+k is the effective D2D communication subframe close to n on the time, and this effective D2D communication subframe refers to have the communication subframe that the subscriber equipment of D2D characteristic can take in the time carrying out D2D communication.
Further, if transmitting power control is carried out in DCI instruction on N2D link, subscriber equipment, on subframe n+k, carries out transmitting power control to the PUCCH or the PUSCH that self send on N2D link, and because the subframe of N2D communication is continuous subframes, therefore, the value of k is 4.
It should be noted that, the power control on N2D link is generally positioned in different subframes from the power control on D2D link.
The method of implementing the embodiment of the present invention to provide from the cooperation of network side and user equipment side below describes.
First, network equipment, according to the interference level of the D2D communication channel state information of D2D user feedback and Cellular Networks user's up or downlink communication, determines that the transmitting power of the control channel of channel/carrying feedback information of the carrying data of D2D link is adjusted step-length and signaling mode (being the form that DCI adopts) and used the group of user equipments of this descending control signaling (DCI).
Then, network equipment carries out power adjustment by the descending control signaling for power control (being called for short power control signal) instruction D2D as the subscriber equipment of transmitting terminal on N2D link, the DCI that D2D is received as the subscriber equipment basis of communications transmit end, the power control command of distinguishing the transmission of current network side apparatus is the power adjustment for the PUCCH/PUSCH self sending in N2D link, or the transmitting power adjustment of the channel of the control information requiring for channel/carrying feedback information or the scheduling of resource of the carrying data that self send in D2D link,
Wherein, in descending control signaling, concrete indicating mode comprises aforesaid way A～mode C, repeats no more herein.
Finally, D2D subscriber equipment is being received after the power control signal that network equipment sends, if for the adjustment of the transmitting power of D2D link, this D2D subscriber equipment is on subframe n+k, the adjustment of the transmitting power of the channel of the control information that the channel/carrying feedback information to the carrying data that self send on D2D link or scheduling of resource require comes into force, wherein n is the subframe that subscriber equipment receives DCI, and k is sub-frame offset.
The technical scheme that the embodiment of the present invention provides is applicable to the adjustment of the transmitting power of D2D unicast communication and D2D cast communication.
Said method handling process can realize with software program, and this software program can be stored in storage medium, in the time that the software program of storage is called, carries out said method step.
Based on same inventive concept, a kind of network equipment is also provided in the embodiment of the present invention, because the principle that this network equipment is dealt with problems is similar to the method shown in Fig. 4, the enforcement of the method that therefore enforcement of this network equipment can be shown in Figure 4, repeats part and repeats no more.
Network equipment shown in Figure 6, the embodiment of the present invention provides, comprising:
The first processing module 61, for generating Downlink Control Information DCI, carries at least one and supports the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in this DCI;
The second processing module 62, for send the DCI generating to D2D subscriber equipment, and the link that carries out transmitting power control by this DCI instruction D2D subscriber equipment, this link comprises D2D link and/or N2D link.
Further, the first processing module 61 specifically for:
According to the channel condition information in the D2D communication of D2D subscriber equipment feedback, and the interfere information of upstream or downstream communication in N2D communication, determine the required user equipment transmitting power control information on D2D link of this D2D subscriber equipment.
Further, the link that the second processing module 62 is carried out transmitting power control by this DCI instruction D2D subscriber equipment specifically comprises following mode:
Mode A, by DCI is carried out to the RNTI that CRC scrambling is used, the link that instruction D2D subscriber equipment carries out transmitting power control;
Mode B, by the information field of DCI, the link that instruction D2D subscriber equipment carries out transmitting power control;
If mode C DCI is the 2nd DCI, the TPC index of the each TPC order by predefined DCI and carry out the corresponding relation between the link of transmitting power control, the link that instruction D2D subscriber equipment carries out transmitting power control, wherein, Equations of The Second Kind DCI can provide required TPC order for multiple D2D subscriber equipmenies.
Based on aforesaid way A, the second processing module 62 specifically for:
If it is a RNTI that DCI is carried out to the RNTI that CRC scrambling uses, indicate corresponding D2D subscriber equipment on N2D link, to carry out transmitting power control;
If it is the 2nd RNTI that DCI is carried out to the RNTI that CRC scrambling uses, indicate corresponding D2D subscriber equipment on D2D link, to carry out transmitting power control.
Further, a RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI;
If it is D2D-TPC-PCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, indicate the channel of the control information that carrying feedback information that corresponding D2D subscriber equipment sends self on D2D link or scheduling of resource require to carry out transmitting power control;
If it is D2D-TPC-PSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, indicate the channel of the carrying data that corresponding D2D subscriber equipment sends self on D2D link to carry out transmitting power control;
If it is TPC-PUCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, the PUCCH that indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control;
If it is TPC-PUSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, the PUSCH that indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control.
Based on aforesaid way A, further, the second processing module 62 also for:
By high-level signaling, the one RNTI and the 2nd RNTI are sent to each D2D subscriber equipment.
Based on aforesaid way B, the second processing module 62 specifically for:
If DCI is first kind DCI, the link of the information field instruction that the link of indicating corresponding D2D subscriber equipment to carry out transmitting power control is DCI;
If DCI is Equations of The Second Kind DCI, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in DCI;
Wherein, first kind DCI has resource scheduling information and only for a subscriber equipment provides required transmitting power control TPC order.
Further, the second processing module 62 indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in DCI, specifically comprises:
Use the bit information of assigned address in DCI, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control; Or,
TPC order after reshuffling in use DCI, the link of indicating the required user equipment transmitting power control information of corresponding D2D subscriber equipment and this D2D subscriber equipment to carry out transmitting power control.
Wherein, in the case of total bit number of the information field of this DCI is constant, the bit number of the each TPC order after reshuffling increases than the bit number of the each TPC order before reshuffling.
As a kind of implementation, the bit number of the each TPC order after reshuffling increases and sets multiple than the bit number of the each TPC order before reshuffling, wherein, the each TPC order after reshuffling comprises that be used to indicate D2D subscriber equipment carries out the first information of the required user equipment transmitting power control information of transmitting power control and be used to indicate this D2D subscriber equipment second information of carrying out the required user equipment transmitting power control information of transmitting power control on D2D link on N2D link.
As another kind of implementation, the bit number of the each TPC order after reshuffling increases and sets quantity, the link that the bit information of this setting quantity is used to indicate D2D subscriber equipment carries out transmitting power control than the bit number of the each TPC order before reshuffling.
Based on aforesaid way B, the second processing module 62 also for:
Notify the structure of the information field after reshuffling in D2D subscriber equipment DCI by high-level signaling.
Preferably, in mode C, the second processing module 62 specifically for:
For a DCI, be TPC index of each D2D user device configuration, and on N2D link or D2D link, carry out transmitting power control by TPC index instruction D2D subscriber equipment; Or
For a DCI, for each D2D user device configuration the one TPC index and the 2nd TPC index, and indicate this D2D subscriber equipment on N2D link, to carry out transmitting power control by a TPC index, and indicate this D2D subscriber equipment on D2D link, to carry out transmitting power control by the 2nd TPC index.
Based on aforesaid way C, the second processing module 62 also for:
Notify the TPC index and the corresponding relation of link that carries out transmitting power control of each TPC order of the predefined DCI of D2D subscriber equipment by high-level signaling; Or
Notify the corresponding N2D link of D2D subscriber equipment the one TPC index and the corresponding D2D link of the 2nd TPC index by high-level signaling.
Based on same inventive concept, a kind of subscriber equipment is also provided in the embodiment of the present invention, because the principle that this subscriber equipment is dealt with problems is similar to the method shown in Fig. 5, the enforcement of the method that therefore enforcement of this subscriber equipment can be shown in Figure 5, repeats part and repeats no more.
Subscriber equipment shown in Figure 7, the embodiment of the present invention provides, comprising:
Receiver module 71, the DCI sending for receiving network equipment, and determine and self carry out the link of transmitting power control by this DCI, this link comprises D2D link and/or N2D link;
Power regulation module 72, for the corresponding user equipment transmitting power control information of carrying according to this DCI, on subframe n+k, definite link is carried out to transmitting power control, wherein, n is the subframe that subscriber equipment receives DCI, and k is default sub-frame offset, and k is not less than 4 positive integer.
Further, receiver module 71 determines that according to following any method DCI indicates the link that self carries out transmitting power control:
Method A, basis carry out to DCI the RNTI that scrambling is used, and determine and self carry out the link of transmitting power control;
Method B, according to the information field of DCI, determine and self carry out the link of transmitting power control;
Method C, according to TPC index corresponding to each TPC order of the predefined DCI of network equipment and the corresponding relation of link that carries out transmitting power control, determine and self carry out the link of transmitting power control.
Based on said method A, receiver module 71 specifically for:
If it is a RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine the link N2D link that self carries out transmitting power control;
If it is the 2nd RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine the link D2D link that self carries out transmitting power control.
Further, a RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI;
Receiver module 71 specifically for:
If it is D2D-TPC-PCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If it is D2D-TPC-PSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the carrying data that on D2D link, self sent carries out transmitting power control;
If it is TPC-PUCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine that the PUCCH on N2D link, self being sent carries out transmitting power control;
If it is TPC-PUSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine that the PUSCH on N2D link, self being sent carries out transmitting power control.
Based on method A, receiver module 71 also for:
Before determining and self carrying out the link of transmitting power control, receive the D2D subscriber equipment that is used to indicate that configures by high-level signaling of network equipment and on N2D link, carry out a RNTI of transmitting power control and be used to indicate D2D subscriber equipment the 2nd RNTI that carries out transmitting power control on D2D link.
Based on method B, receiver module 71 specifically for:
If DCI is first kind DCI, determine the link that self carries out the information field instruction that the link of transmitting power control is DCI;
If DCI is Equations of The Second Kind DCI, according to the information field after reshuffling in DCI, determines and self carry out the link of transmitting power control;
Wherein, first kind DCI has resource scheduling information and only for a subscriber equipment provides required transmitting power control TPC order, Equations of The Second Kind DCI can provide required TPC order for multiple subscriber equipmenies.
Further, receiver module 71 specifically for:
According to the bit information of assigned address in DCI, determine and self carry out the link of transmitting power control; Or,
According to the bit information of the each TPC order after reshuffling in DCI, determine the link that self carries out the required user equipment transmitting power control information of transmitting power control and self carry out transmitting power control.
Wherein, in the case of total bit number of the information field of this DCI is constant, the bit number of the each TPC order after reshuffling increases than the bit number of the each TPC order before reshuffling.
Preferably, the bit number of the each TPC order after reshuffling increases and sets multiple than the bit number of the each TPC order before reshuffling, wherein, the TPC order after each reshuffling comprises that be used to indicate D2D subscriber equipment carries out the first information of the required user equipment transmitting power control information of transmitting power control and be used to indicate this D2D subscriber equipment second information of carrying out the required user equipment transmitting power control information of transmitting power control on D2D link on N2D link.
Preferably, the bit number of the each TPC order after reshuffling increases and sets quantity, the link that the bit information of this setting quantity is used to indicate D2D subscriber equipment carries out transmitting power control than the bit number of the each TPC order before reshuffling.
Further, if DCI indicates from carry out transmitting power control on D2D link, receiver module 71 specifically for:
In the time DCI being carried out to RNTI that CRC scrambling uses for TPC-PUCCH-RNTI, determine that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
In the time DCI being carried out to RNTI that CRC scrambling uses for TPC-PUSCH-RNTI, determine that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
Based on method B, receiver module 71 also for:
Before definite DCI instruction self is carried out the link of transmitting power control, the structure of the information field after reshuffling in the DCI that reception network equipment is notified by high-level signaling.
Further, based on method C, receiver module 71 specifically for:
According to the TPC index receiving and this TPC index and the corresponding relation of link that carries out transmitting power control, determine and self carry out the link of transmitting power control; Or
If receive a TPC index, determine and self need on N2D link, carry out transmitting power control; If receive the 2nd TPC index, determine and self need on D2D link, carry out transmitting power control.
Further, receiver module 71 specifically for:
If the corresponding D2D link of the TPC index receiving, or receive the 2nd TPC index:
If it is TPC-PUCCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If it is TPC-PUSCH-RNTI that DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
Based on method C, receiver module 71 before definite DCI instruction self is carried out the link of transmitting power control, also for:
Receive the predefined DCI that notifies by high-level signaling of network equipment each TPC order TPC index and carry out the corresponding relation of the link of transmitting power control; Or
Receive the corresponding N2D link of a TPC index and the corresponding D2D link of the 2nd TPC index that network equipment is notified by high-level signaling.
Based on above-described embodiment, shown in Figure 8, the communication system that the embodiment of the present invention provides, comprising:
Network equipment 81, for generating Downlink Control Information DCI, carries at least one and supports the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in this DCI; And send the DCI generating to D2D subscriber equipment, and the link that carries out transmitting power control by this DCI instruction D2D subscriber equipment;
Subscriber equipment 82, the DCI sending for receiving network equipment, and determine and self carry out the link of transmitting power control by this DCI; And according to the corresponding user equipment transmitting power control information of carrying in DCI, on subframe n+k, definite link is carried out to transmitting power control, and wherein, n is the subframe that subscriber equipment receives DCI, k is sub-frame offset, and k is not less than 4 positive integer;
Wherein, this link comprises D2D link and/or N2D link.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (49)

1. a method of carrying out power control, is characterized in that, the method comprises:
Network equipment generates Downlink Control Information DCI, carries at least one and support subscriber equipment to subscriber equipment N2D link, to carry out the required user equipment transmitting power control information of transmitting power control at D2D link and/or network to the D2D subscriber equipment of subscriber equipment D2D communication in described DCI;
Described network equipment sends the DCI generating to described D2D subscriber equipment, and indicates described D2D subscriber equipment to carry out the link of transmitting power control by described DCI, and described link comprises D2D link and/or N2D link.
2. the method for claim 1, is characterized in that, described method also comprises:
Described network equipment is according to the channel information in the D2D communication of D2D subscriber equipment feedback, and the channel information of the downlink communication of the interfere information of the uplink communication that described in N2D communication, network equipment measures or D2D subscriber equipment feedback, determine the required user equipment transmitting power control information on D2D link of this D2D subscriber equipment.
3. the method for claim 1, is characterized in that, described network equipment indicates described D2D subscriber equipment to carry out the link of transmitting power control by described DCI, comprising:
Described network equipment, by described DCI being carried out to the Radio Network Temporary Identifier RNTI that cyclic redundancy check (CRC) scrambling is used, indicates described D2D subscriber equipment to carry out the link of transmitting power control; Or
Described network equipment, by the information field to described DCI, indicates described D2D subscriber equipment to carry out the link of transmitting power control; Or
If described DCI is Equations of The Second Kind DCI, described network equipment is by TPC index corresponding to each transmitting power control TPC order of predefined described DCI and the corresponding relation of link that carries out transmitting power control, indicate described D2D subscriber equipment to carry out the link of transmitting power control, wherein, described Equations of The Second Kind DCI can carry out the required TPC order of transmitting power control for multiple subscriber equipmenies provide.
4. method as claimed in claim 3, is characterized in that,
If it is a RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described network equipment indicates corresponding D2D subscriber equipment on N2D link, to carry out transmitting power control;
If it is the 2nd RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described network equipment indicates corresponding D2D subscriber equipment on D2D link, to carry out transmitting power control.
5. method as claimed in claim 4, is characterized in that, a described RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and described the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI;
If it is D2D-TPC-PCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described network equipment indicates the channel of the control information that carrying feedback information that corresponding D2D subscriber equipment sends self on D2D link or scheduling of resource require to carry out transmitting power control;
If it is D2D-TPC-PSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described network equipment indicates the channel of the carrying data that corresponding D2D subscriber equipment sends self on D2D link to carry out transmitting power control;
If it is TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, the PUCCH that described network equipment indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control;
If it is TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, the PUSCH that described network equipment indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control.
6. the method as described in claim 4 or 5, is characterized in that, described method also comprises:
Described network equipment is a RNTI and described the 2nd RNTI described in each D2D user device configuration by high-level signaling.
7. method as claimed in claim 3, is characterized in that, described network equipment, by the information field of described DCI, indicates described D2D subscriber equipment to carry out the link of transmitting power control, specifically comprises:
If described DCI is first kind DCI, the link of the information field instruction that the link that described network equipment indicates corresponding D2D subscriber equipment to carry out transmitting power control is described DCI;
If described DCI is Equations of The Second Kind DCI, described network equipment indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in described DCI;
Wherein, described first kind DCI has resource scheduling information and only for a subscriber equipment provides required transmitting power control TPC order.
8. method as claimed in claim 7, is characterized in that, described network equipment indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in described DCI, comprising:
Described network equipment uses the bit information of assigned address in described DCI, indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control; Or,
TPC order after described network equipment uses and reshuffles in described DCI, the link of indicating the required user equipment transmitting power control information of corresponding D2D subscriber equipment and this D2D subscriber equipment to carry out transmitting power control.
9. method as claimed in claim 8, is characterized in that, the TPC order after reshuffling in described DCI comprises following form:
In the case of total bit number of the information field of described DCI is constant, the bit number of the each TPC order after reshuffling increases and sets multiple than the bit number of the each TPC order before reshuffling, wherein, the each TPC order after reshuffling comprises that be used to indicate D2D subscriber equipment carries out the first information of the required user equipment transmitting power control information of transmitting power control and be used to indicate this D2D subscriber equipment second information of carrying out the required user equipment transmitting power control information of transmitting power control on D2D link on N2D link; Or,
In the case of total bit number of the information field of described DCI is constant, the bit number of the each TPC order after reshuffling increases and sets quantity, the link that the bit information of described setting quantity is used to indicate D2D subscriber equipment carries out transmitting power control than the bit number of the each TPC order before reshuffling.
10. the method as described in claim 7～9 any one, is characterized in that, if described DCI is Equations of The Second Kind DCI, described method also comprises:
Described network equipment is notified the structure of the information field after reshuffling in DCI described in D2D subscriber equipment by high-level signaling.
11. methods as claimed in claim 3, it is characterized in that, the TPC index of described network equipment by the each TPC order in predefined described DCI and carry out the corresponding relation between the link of transmitting power control, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control:
For a DCI, described network equipment is TPC index of each D2D user device configuration, and indicates described D2D subscriber equipment to carry out transmitting power control on N2D link or D2D link by described TPC index; Or
For a DCI, described network equipment is each D2D user device configuration the one TPC index and the 2nd TPC index, and indicate this D2D subscriber equipment on N2D link, to carry out transmitting power control by a described TPC index, and indicate this D2D subscriber equipment on D2D link, to carry out transmitting power control by described the 2nd TPC index.
12. methods as claimed in claim 11, is characterized in that, described method also comprises:
Described network equipment is notified the TPC index and the corresponding relation of link that carries out transmitting power control of each TPC order of the predefined DCI of D2D subscriber equipment by high-level signaling; Or
Described network equipment is notified the corresponding N2D link of D2D subscriber equipment the one TPC index and the corresponding D2D link of the 2nd TPC index by high-level signaling.
13. 1 kinds are carried out the method for power control, it is characterized in that, the method comprises:
Subscriber equipment receives the DCI that network equipment sends, and is determined and self carried out the link of transmitting power control by described DCI, and described link comprises D2D link and/or N2D link;
Described subscriber equipment, according to the user equipment transmitting power control information of carrying in described DCI, on subframe n+k, carries out transmitting power control to definite link, wherein, n is the subframe that described subscriber equipment receives described DCI, and k is default sub-frame offset, and k is not less than 4 positive integer.
14. methods as claimed in claim 13, is characterized in that, described subscriber equipment is determined and self carried out the link of transmitting power control by described DCI, specifically comprises:
Described subscriber equipment, according to described DCI is carried out to the RNTI that CRC scrambling is used, is determined and self is carried out the link of transmitting power control;
Or described subscriber equipment is according to the information field of described DCI, determines and self carries out the link of transmitting power control;
Or described subscriber equipment is according to TPC index corresponding to each TPC order of the predefined described DCI of described network equipment and the corresponding relation of link that carries out transmitting power control, determines and self carries out the link of transmitting power control.
15. methods as claimed in claim 14, is characterized in that, described subscriber equipment according to described DCI is carried out to the RNTI that CRC scrambling is used, is determined and self carried out the link of transmitting power control, comprising:
If described subscriber equipment determines that it is a RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment is determined the link N2D link that self carries out transmitting power control;
If described subscriber equipment determines that it is the 2nd RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment is determined the link D2D link that self carries out transmitting power control.
16. methods as claimed in claim 15, is characterized in that, a described RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and described the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI;
If described subscriber equipment determines that it is D2D-TPC-PCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment determines that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If described subscriber equipment determines that it is D2D-TPC-PSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment determines that the channel of the carrying data that on D2D link, self sent carries out transmitting power control;
If described subscriber equipment determines that it is TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment determines that the PUCCH on N2D link, self being sent carries out transmitting power control;
If described subscriber equipment determines that it is TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment determines that the PUSCH on N2D link, self being sent carries out transmitting power control.
17. methods as described in claim 15 or 16, is characterized in that, described subscriber equipment, before determining and self carrying out the link of transmitting power control, also comprises:
Described subscriber equipment receives the D2D subscriber equipment that is used to indicate that described network equipment configures by high-level signaling and on N2D link, carries out a RNTI of transmitting power control and be used to indicate D2D subscriber equipment the 2nd RNTI that carries out transmitting power control on D2D link.
18. methods as claimed in claim 14, is characterized in that, described subscriber equipment according to the information field of described DCI, is determined and self carried out the link of transmitting power control, specifically comprises:
If described DCI is first kind DCI, described subscriber equipment is determined the link that self carries out the information field instruction that the link of transmitting power control is described DCI;
If described DCI is Equations of The Second Kind DCI, described subscriber equipment, according to the information field after reshuffling in this DCI, is determined and self is carried out the link of transmitting power control;
Wherein, described first kind DCI has resource scheduling information and only for a subscriber equipment provides required transmitting power control TPC order, described Equations of The Second Kind DCI can provide required TPC order for multiple subscriber equipmenies.
19. methods as claimed in claim 17, is characterized in that, described subscriber equipment according to the information field after reshuffling in described DCI, is determined and self carried out the link of transmitting power control, comprising:
Described subscriber equipment, according to the bit information of assigned address in described DCI, is determined and self is carried out the link of transmitting power control; Or,
Described subscriber equipment, according to the TPC order after reshuffling in described DCI, is determined the link that self carries out the required user equipment transmitting power control information of transmitting power control and self carry out transmitting power control.
20. methods as claimed in claim 19, is characterized in that, the TPC order after reshuffling in described DCI comprises following form:
In the case of total bit number of the information field of described DCI is constant, the bit number of the each TPC order after reshuffling increases and sets multiple than the bit number of the each TPC order before reshuffling, wherein, the each TPC order after reshuffling comprises that be used to indicate D2D subscriber equipment carries out the first information of the required user equipment transmitting power control information of transmitting power control and be used to indicate this D2D subscriber equipment second information of carrying out the required user equipment transmitting power control information of transmitting power control on D2D link on N2D link; Or,
In the case of total bit number of the information field of described DCI is constant, the bit number of the each TPC order after reshuffling increases and sets quantity, the link that the bit information of described setting quantity is used to indicate D2D subscriber equipment carries out transmitting power control than the bit number of the each TPC order before reshuffling.
21. methods as claimed in claim 18, is characterized in that, if described DCI indicates described subscriber equipment to carry out transmitting power control on D2D link:
When described subscriber equipment is determined when described DCI is carried out to RNTI that CRC scrambling uses for TPC-PUCCH-RNTI, described subscriber equipment determines that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
When described subscriber equipment determines that when described DCI is carried out to RNTI that CRC scrambling uses for TPC-PUSCH-RNTI, described subscriber equipment determines that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
22. methods as described in claim 17 or 18, is characterized in that, if described DCI is Equations of The Second Kind DCI, described subscriber equipment, before determining that described DCI instruction self is carried out the link of transmitting power control, also comprises:
The structure of the information field after described subscriber equipment receives and reshuffles in the described DCI that described network equipment notifies by high-level signaling.
23. methods as claimed in claim 14, it is characterized in that, described subscriber equipment is according to the TPC index of the each TPC order in predefined described DCI and carry out the corresponding relation between the link of transmitting power control, determines and self carries out the link of transmitting power control, comprising:
Described subscriber equipment, according to TPC index and the corresponding relation of link that carries out transmitting power control, is determined link corresponding to TPC index receiving; Or
If described subscriber equipment receives a TPC index, described subscriber equipment is determined self need to carry out transmitting power control on N2D link; If described subscriber equipment receives the 2nd TPC index, described subscriber equipment is determined self need to carry out transmitting power control on D2D link.
24. methods as claimed in claim 23, is characterized in that, if the corresponding D2D link of the TPC index that described subscriber equipment receives, or described subscriber equipment receives the 2nd TPC index:
If described subscriber equipment determines that it is TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment determines that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If described subscriber equipment determines that it is TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, described subscriber equipment determines that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
25. methods as described in claim 23 or 24, is characterized in that, described subscriber equipment, before determining that described DCI instruction self is carried out the link of transmitting power control, also comprises:
Described subscriber equipment receives the TPC index and the corresponding relation of link that carries out transmitting power control of each TPC order of the predefined DCI that described network equipment notifies by high-level signaling; Or,
Described subscriber equipment receives the corresponding N2D link of a TPC index and the corresponding D2D link of the 2nd TPC index that described network equipment is notified by high-level signaling.
26. 1 kinds of network equipments, is characterized in that, this equipment comprises:
The first processing module, generates Downlink Control Information DCI, carries at least one and support the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in described DCI;
The second processing module, for send the DCI generating to described D2D subscriber equipment, and indicates described D2D subscriber equipment to carry out the link of transmitting power control by described DCI, and described link comprises D2D link and/or N2D link.
27. network equipments as claimed in claim 26, is characterized in that, described the first processing module specifically for:
According to the channel information in the D2D communication of D2D subscriber equipment feedback, and the channel information of the downlink communication of the interfere information of the uplink communication self measuring in N2D communication or D2D subscriber equipment feedback, determine the required user equipment transmitting power control information on D2D link of this D2D subscriber equipment.
28. network equipments as claimed in claim 26, is characterized in that, described the second processing module specifically for:
By described DCI being carried out to the Radio Network Temporary Identifier RNTI that CRC scrambling is used, indicate described D2D subscriber equipment to carry out the link of transmitting power control;
Or by the information field of described DCI, indicate described D2D subscriber equipment to carry out the link of transmitting power control;
If or described DCI is Equations of The Second Kind DCI, by TPC index corresponding to each transmitting power control TPC order of predefined described DCI and the corresponding relation of link that carries out transmitting power control, indicate described D2D subscriber equipment to carry out the link of transmitting power control, wherein, described Equations of The Second Kind DCI can carry out the required TPC order of transmitting power control for multiple subscriber equipmenies provide.
29. network equipments as claimed in claim 28, is characterized in that, described the second processing module specifically for:
If it is a RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, indicate corresponding D2D subscriber equipment on N2D link, to carry out transmitting power control;
If it is the 2nd RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, indicate corresponding D2D subscriber equipment on D2D link, to carry out transmitting power control.
30. network equipments as claimed in claim 29, is characterized in that, a described RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and described the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI;
Described the second processing module specifically for:
If it is D2D-TPC-PCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, indicate the channel of the control information that carrying feedback information that corresponding D2D subscriber equipment sends self on D2D link or scheduling of resource require to carry out transmitting power control;
If it is D2D-TPC-PSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, indicate the channel of the carrying data that corresponding D2D subscriber equipment sends self on D2D link to carry out transmitting power control;
If it is TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, the PUCCH that indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control;
If it is TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, the PUSCH that indicates corresponding D2D subscriber equipment on N2D link, self to be sent carries out transmitting power control.
31. network equipments as described in claim 29 or 30, is characterized in that, described the second processing module also for:
By high-level signaling, a described RNTI and described the 2nd RNTI are sent to each D2D subscriber equipment.
32. network equipments as claimed in claim 28, is characterized in that, described the second processing module specifically for:
If described DCI is first kind DCI, the link of the information field instruction that the link of indicating corresponding D2D subscriber equipment to carry out transmitting power control is described DCI;
If described DCI is Equations of The Second Kind DCI, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in described DCI;
Wherein, described first kind DCI has resource scheduling information and only for a subscriber equipment provides required transmitting power control TPC order.
33. network equipments as claimed in claim 32, is characterized in that, described the second processing module indicates corresponding D2D subscriber equipment to carry out the link of transmitting power control by the information field after reshuffling in described DCI, specifically comprises:
Use the bit information of assigned address in described DCI, indicate corresponding D2D subscriber equipment to carry out the link of transmitting power control; Or,
Use the TPC order after reshuffling in described DCI, the link of indicating the required user equipment transmitting power control information of corresponding D2D subscriber equipment and this D2D subscriber equipment to carry out transmitting power control.
34. network equipments as described in claim 32 or 33, is characterized in that, if described DCI is Equations of The Second Kind DCI, described the second processing module also for:
Notify the structure of the information field after reshuffling in DCI described in D2D subscriber equipment by high-level signaling.
35. network equipments as claimed in claim 28, is characterized in that, described the second processing module specifically for:
For a DCI, be TPC index of each D2D user device configuration, and indicate described D2D subscriber equipment to carry out transmitting power control on N2D link or D2D link by described TPC index; Or
For a DCI, for each D2D user device configuration the one TPC index and the 2nd TPC index, and indicate this D2D subscriber equipment on N2D link, to carry out transmitting power control by a described TPC index, and indicate this D2D subscriber equipment on D2D link, to carry out transmitting power control by described the 2nd TPC index.
36. network equipments as claimed in claim 35, is characterized in that, described the second processing module also for:
Notify the TPC index and the corresponding relation of link that carries out transmitting power control of each TPC order of the predefined DCI of D2D subscriber equipment by high-level signaling; Or
Notify the corresponding N2D link of D2D subscriber equipment the one TPC index and the corresponding D2D link of the 2nd TPC index by high-level signaling.
37. 1 kinds of subscriber equipmenies, is characterized in that, this subscriber equipment comprises:
Receiver module, the DCI sending for receiving network equipment, and determine and self carry out the link of transmitting power control by described DCI, described link comprises D2D link and/or N2D link;
Power regulation module, for the corresponding user equipment transmitting power control information of carrying according to described DCI, on subframe n+k, definite link is carried out to transmitting power control, wherein, n is the subframe that described subscriber equipment receives described DCI, and k is default sub-frame offset, and k is not less than 4 positive integer.
38. subscriber equipmenies as claimed in claim 37, is characterized in that, described receiver module determines that according to following mode described DCI indicates the link that self carries out transmitting power control:
According to described DCI is carried out to the RNTI that CRC scrambling is used, determine and self carry out the link of transmitting power control;
Or according to the information field of described DCI, determine and self carry out the link of transmitting power control;
Or according to TPC index corresponding to each TPC order of the predefined described DCI of described network equipment and the corresponding relation of link that carries out transmitting power control, determine and self carry out the link of transmitting power control.
39. subscriber equipmenies as claimed in claim 38, is characterized in that, described receiver module specifically for:
If it is a RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine the link N2D link that self carries out transmitting power control;
If it is the 2nd RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine the link D2D link that self carries out transmitting power control.
40. subscriber equipmenies as claimed in claim 39, is characterized in that, a described RNTI comprises TPC-PUCCH-RNTI and TPC-PUSCH-RNTI, and described the 2nd RNTI comprises D2D-TPC-PCCH-RNTI and D2D-TPC-PSCH-RNTI;
Described receiver module specifically for:
If it is D2D-TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If it is D2D-TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the carrying data that on D2D link, self sent carries out transmitting power control;
If it is TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine that the PUCCH on N2D link, self being sent carries out transmitting power control;
If it is TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine that the PUSCH on N2D link, self being sent carries out transmitting power control.
41. subscriber equipmenies as described in claim 39 or 40, is characterized in that, described receiver module also for:
Before determining and self carrying out the link of transmitting power control, receive the D2D subscriber equipment that is used to indicate that described network equipment configures by high-level signaling and on N2D link, carry out a RNTI of transmitting power control and be used to indicate D2D subscriber equipment the 2nd RNTI that carries out transmitting power control on D2D link.
42. subscriber equipmenies as claimed in claim 38, is characterized in that, described receiver module specifically for:
If described DCI is first kind DCI, determine the link that self carries out the information field instruction that the link of transmitting power control is described DCI;
If described DCI is Equations of The Second Kind DCI, according to the information field after reshuffling in described DCI, determines and self carry out the link of transmitting power control;
Wherein, described first kind DCI has resource scheduling information and only for a subscriber equipment provides required transmitting power control TPC order, described Equations of The Second Kind DCI can provide required TPC order for multiple subscriber equipmenies.
43. subscriber equipmenies as claimed in claim 42, is characterized in that, described receiver module specifically for:
According to the bit information of assigned address in described DCI, determine and self carry out the link of transmitting power control; Or,
According to the TPC order after reshuffling in described DCI, determine the link that self carries out the required user equipment transmitting power control information of transmitting power control and self carry out transmitting power control.
44. subscriber equipmenies as described in claim 42 or 43, is characterized in that, if described DCI indicates from carry out transmitting power control on D2D link, described receiver module specifically for:
In the time described DCI being carried out to RNTI that CRC scrambling uses for TPC-PUCCH-RNTI, determine that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
In the time described DCI being carried out to RNTI that CRC scrambling uses for TPC-PUSCH-RNTI, determine that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
45. subscriber equipmenies as described in claim 42 or 43, is characterized in that, described receiver module also for:
Before determining that described DCI instruction self is carried out the link of transmitting power control, receive the structure of the information field after reshuffling in the described DCI that described network equipment notifies by high-level signaling.
46. subscriber equipmenies as claimed in claim 38, is characterized in that, described receiver module specifically for:
According to the TPC index receiving and this TPC index and the corresponding relation of link that carries out transmitting power control, determine and self carry out the link of transmitting power control; Or
If receive a TPC index, determine and self need on N2D link, carry out transmitting power control; If receive the 2nd TPC index, determine and self need on D2D link, carry out transmitting power control.
47. subscriber equipmenies as claimed in claim 46, is characterized in that, described receiver module specifically for:
If the corresponding D2D link of the TPC index receiving, or receive the 2nd TPC index:
If it is TPC-PUCCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the control information that the carrying feedback information that on D2D link, self sent or scheduling of resource require carries out transmitting power control;
If it is TPC-PUSCH-RNTI that described DCI is carried out to the RNTI that CRC scrambling uses, determine that the channel of the carrying data that on D2D link, self sent carries out transmitting power control.
48. subscriber equipmenies as described in claim 46 or 47, is characterized in that, described receiver module before determining that described DCI instruction self is carried out the link of transmitting power control, also for:
Receive the TPC index and the corresponding relation of link that carries out transmitting power control of each TPC order of the predefined DCI that described network equipment notifies by high-level signaling; Or
Receive the corresponding N2D link of a TPC index and the corresponding D2D link of the 2nd TPC index that described network equipment is notified by high-level signaling.
49. 1 kinds of communication systems, is characterized in that, this system comprises:
Network equipment, for generating Downlink Control Information DCI, carries at least one and supports the D2D subscriber equipment of D2D communication on D2D link and/or N2D link, to carry out the required user equipment transmitting power control information of transmitting power control in described DCI; And send the DCI generating to described D2D subscriber equipment, and indicate described D2D subscriber equipment to carry out the link of transmitting power control by described DCI;
Subscriber equipment, the DCI sending for receiving network equipment, and determine and self carry out the link of transmitting power control by described DCI; And according to the corresponding user equipment transmitting power control information of carrying in described DCI, on subframe n+k, definite link is carried out to transmitting power control, wherein, n is the subframe that described subscriber equipment receives described DCI, and k is sub-frame offset, and k is not less than 4 positive integer;
Wherein, described link comprises D2D link and/or N2D link.
CN201310116435.8A 2013-04-03 2013-04-03 A kind of method, apparatus and system for carrying out Power Control Active CN104105186B (en)

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