CN106793092B

CN106793092B - Method and device for acquiring control channel resources

Info

Publication number: CN106793092B
Application number: CN201510800477.2A
Authority: CN
Inventors: 杨瑾; 黄双红; 卢有雄
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-11-19
Filing date: 2015-11-19
Publication date: 2022-07-26
Anticipated expiration: 2035-11-19
Also published as: CN106793092A; WO2017084514A1

Abstract

The embodiment of the invention provides a method for acquiring control channel resources, which comprises the following steps: a first UE acquires PSSCCH resources; and sending side link feedback control information on the obtained PSSCCH resource. By setting the PSSCCH and indicating the PSSCCH resource to the first UE, the first UE bears and sends the side link feedback control information on the obtained PSSCCH resource, and provides reference information used by data transmission resources for the second UE or network side equipment. The embodiment of the invention also provides the user equipment and the network side equipment.

Description

Method and device for acquiring control channel resources

Technical Field

The present invention relates to a Device-to-Device (D2D) mobile communication technology, and in particular, to a method and Device for acquiring control channel resources.

Background

In a D2D communication system, when D2D data needs to be transmitted between User Equipments (UEs), the UE at the transmitting end that transmits the D2D data is directly transmitted to the UE at the receiving end through an air interface, as shown in fig. 1, where a radio link between D2D UEs is called a side link (Sidelink). For the near field communication UE applying the D2D communication mode, the D2D transmission not only saves wireless spectrum resources, but also reduces the data transmission pressure of a core network, can reduce the occupation of system resources, increases the spectrum efficiency of a cellular communication system, reduces the transmission power consumption of a terminal, and saves the network operation cost to a great extent.

When data transmission is directly performed between D2D UEs, the sending-end UE may obtain Physical side link Control Channel (PSCCH) resources and Physical side link Shared Channel (pscsch) resources for D2D communication according to scheduling configuration of the network side, or may compete in a given PSCCH resource pool and a PSCCH resource pool to select resources for D2D communication Control and data information transmission.

However, when the D2D UE transmits data based on PSCCH and PSCCH resources, only one-way broadcast/multicast communication is possible, the transmitting end UE blindly transmits the D2D data, and cannot know the receiving condition of the receiving end UE for the D2D data, so that the utilization rate of the side link channel resources is low.

Disclosure of Invention

In view of this, embodiments of the present invention are intended to provide a method and an apparatus for acquiring control channel resources, so as to improve the utilization rate of side link channel resources.

The technical scheme of the embodiment of the invention is realized as follows:

a method for acquiring control channel resources, the method comprising:

a first User Equipment (UE) acquires PSSCCH resources of a second control channel of a physical side link;

the first UE sends side link feedback control information on the acquired PSSCCH resource;

wherein the obtaining, by the first UE, the PSSCCH resource includes:

the first UE receives a high-level signaling sent by a second UE or a network side device, wherein the high-level signaling comprises PSSCCH resource indication information; the first UE acquires the PSSCCH resource according to the PSSCCH resource indication information; or,

the first UE receives side link control information (SCI) sent by the second UE, wherein the SCI comprises PSSCCH resource indication information; the first UE acquires the PSSCCH resource according to the PSSCCH resource indication information; or,

the first UE receives SCI sent by the second UE on a PSCCH resource of a physical side link control channel, and acquires the PSSCCH resource corresponding to the PSCCH resource according to a predefined PSCCH resource and PSSCCH resource index relation; or,

and the first UE receives data information sent by the second UE on the PSSCH resource of the physical side link shared channel, and acquires the PSSCCH resource corresponding to the PSSCH resource according to the index relation between the pre-defined PSSCH resource and the PSSCCH resource.

In the method, the PSSCCH resource indication information indicates a subframe and/or a Resource Block (RB) where the PSSCCH resource is located; or,

the PSSCCH resource indication information indicates a channel index number of the PSSCCH resource.

In the above method, the high layer signaling is a radio resource control RRC message, and the PSSCCH resource indication information is included in a prose commconfig information element; or, the high-level signaling is a system message SIB, and the PSSCCH resource indication information is contained in a special SIB.

In the above method, the step of indicating the sub-frame where the PSSCCH resource is located by the PSSCCH resource indication information includes:

the PSSCCH resource indication information indicates the subframe number of the sub-frame where the PSSCCH resource is located; or,

the PSSCCH resource indication information indicates the time sequence relation between the sub-frame where the PSSCCH resource is located and the sub-frame where the corresponding PSCCH resource or PSSCH resource is located.

In the above method, the step of indicating the resource block RB where the PSSCCH resource is located by the PSSCCH resource indication information includes:

the PSSCCH resource indication information indicates an RB index number of an RB in which the PSSCCH resource is positioned; or,

the PSSCCH resource indication information indicates the relative RB index number of the PSSCCH resource in a PSSCCH resource pool.

In the method, when the PSSCCH resource indication information indicates the channel index number of the PSSCCH resource, the first UE determines the subframe and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

In the above method, the obtaining, by the first UE, the PSCCH resource corresponding to the PSCCH resource according to a predefined PSCCH resource-PSCCH resource index relationship includes:

the first UE determines a subframe where the PSSCCH resource is located corresponding to the subframe where the PSCCH resource is located according to the index relation between the PSCCH resource and the PSSCCH resource; or,

the first UE determines a time sequence relation between a subframe where the PSCCH resource is located and a subframe where the PSSCCH resource is located according to the PSCCH resource and PSSCCH resource index relation, and determines the subframe where the PSSCCH resource is located according to the time sequence relation; or,

the first UE determines the RB index number of the RB where the PSSCCH resource is located corresponding to the RB index number of the RB where the PSCCH resource is located or the relative RB index number in a PSSCCH resource pool according to the PSCCH resource and PSSCCH resource index relation; or,

the first UE determines a subframe where the PSSCCH resource is located corresponding to a channel index number of the PSCCH resource according to the index relation between the PSCCH resource and the PSSCCH resource; or,

the first UE determines the RB index number of the RB where the PSSCCH resource is located corresponding to the channel index number of the PSCCH resource or the relative RB index number in a PSSCCH resource pool according to the index relation between the PSCCH resource and the PSSCCH resource; or,

and the first UE determines the channel index number of the PSSCCH resource corresponding to the channel index number of the PSCCH resource according to the index relationship between the PSCCH resource and the PSSCCH resource, and determines the subframe and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

In the above method, the acquiring, by the first UE, the PSSCCH resource corresponding to the PSSCH resource according to the predefined PSSCH resource-PSSCCH resource index relationship includes:

the first UE determines a sub-frame where the PSSCCH resource is located corresponding to the sub-frame where the PSSCH resource is located according to the PSSCH resource and PSSCCH resource index relation; or,

the first UE determines a time sequence relation between a sub-frame where the PSSCH resource is located and a sub-frame where the PSSCCH resource is located according to the PSSCH resource and PSSCCH resource index relation, and determines the sub-frame where the PSSCCH resource is located according to the time sequence relation; or,

the first UE determines the RB index number of the RB where the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, wherein the RB index number corresponds to the RB index number of the RB where the PSSCH resource is located; or,

the first UE determines a sub-frame where the PSSCCH resource is located corresponding to a channel index number of the PSSCH resource according to the PSSCH resource and PSSCCH resource index relation; or,

the first UE determines the RB index number of the RB where the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, wherein the RB index number corresponds to the channel index number of the PSSCH resource; or,

and the first UE acquires the channel index number of the PSSCCH resource corresponding to the channel index number of the PSSCH resource according to the index relationship between the PSSCH resource and the PSSCCH resource, and determines the subframe and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

In the above method, the determining, by the first UE, the sub-frame where the PSCCH resource is located according to the timing relationship between the sub-frame where the PSCCH resource is located and the sub-frame where the PSSCCH resource is located, or the timing relationship between the sub-frame where the PSCCH resource is located and the sub-frame where the PSSCCH resource is located, includes:

the sub-frame where the PSCCH resource or the PSSCH resource is located is a sub-frame # n, the sub-frame where the corresponding PSSCCH resource is located is a sub-frame # m, wherein the index relationship between the sub-frame # n and the sub-frame # m is predefined by a system;

the sub-frame where the PSCCH resource or the PSSCH resource is located is a sub-frame # n, and the sub-frame where the corresponding PSSCCH resource is located is a sub-frame # n + k, wherein k is a positive integer and is predefined by a system;

the sub-frame where the PSCCH resource or the PSSCH resource is located is a sub-frame # n, the sub-frame where the corresponding PSSCCH resource is located is a sub-frame # m, the sub-frame # m is a sub-frame # n + k and the following sub-frames, the sub-frame # m is a sub-frame in the PSSCCH resource pool, wherein k is a positive integer and is predefined by a system;

wherein n and m take the value of 0-9.

In the method, the first UE determines the sub-frame where the PSSCCH resource is located according to the sub-frame where the PSSCH resource is located, and when the PSSCH resource comprises a plurality of sub-frames, the first or last PSSCH sub-frame is taken as the sub-frame # n in the plurality of PSSCH sub-frames.

In the method, when the first UE determines the RB index number of the RB in which the PSSCH resource is located corresponding to the RB index number of the RB in which the PSSCH resource is located or the relative RB index number in the PSSCCH resource pool according to the PSSCH resource-PSSCCH resource index relationship, the PSSCH resource includes a plurality of RBs, and the minimum value or the maximum value of the RB index numbers is used as the RB index number of the RB in which the PSSCH resource is located in the plurality of RBs.

In the above method, the determining, by the first UE, the subframe where the pschs resource is located according to the channel index number of the pschs resource, or the channel index number of the PSCCH resource, includes:

the first UE performs modular operation on the T by using the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource, and determines a subframe where the PSSCCH resource is located; or,

dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by T by the first UE, and performing a down-rounding operation to determine a sub-frame where the PSSCCH resource is located; or,

dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by T by the first UE, and performing rounding-up operation to determine a sub-frame where the PSSCCH resource is located;

wherein T is a positive integer, and the value of T is any one of the following: the number of sub-frames in a PSSCCH resource pool in a period; the number of subframes used for side link transmission in the period; the number of subframes in a PSCCH resource pool in a period; the number of sub-frames in the PSSCH resource pool in the period.

In the above method, the determining, by the first UE, the RB in which the PSCCH resource is located according to the channel index number of the PSCCH resource, or the channel index number of the PSCCH resource, includes:

the first UE performs modular operation on the F by using the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource, and determines the RB where the PSSCCH resource is located; or,

dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by F by the first UE, and performing a rounding-down operation to determine an RB where the PSSCCH resource is located; or,

dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by F by the first UE, and performing rounding-up operation to determine the RB where the PSSCCH resource is located;

wherein F is a positive integer, and the value of F is any one of the following: the number of RBs in the PSSCCH resource pool; the number of RBs used for sidelink transmission; the number of RBs within the system bandwidth; a fixed value predefined by the system; the number of RBs in the PSCCH resource pool; number of RBs in the psch resource pool.

In the above method, the sending, by the first UE, the side link feedback control information on the obtained PSSCCH resource includes:

and the first UE sends the side link feedback control information on the acquired PSSCCH resource in a Physical Uplink Control Channel (PUCCH) format.

In the above method, the side link feedback control information includes at least one of the following information: side link data receiving confirmation or non-confirmation information A or N, side link channel state information CSI, side link channel quality indication CQI information, side link channel rank indication RI information and side link channel precoding matrix indication PMI information.

In the above method, the network side device includes any one of the following devices: evolved node B eNB, relay node RN, cell coordination entity MCE, gateway GW, mobility management equipment MME, evolved universal terrestrial radio access network EUTRAN operation management and maintenance OAM manager.

A method for acquiring control channel resources, the method comprising:

the second UE indicates the PSSCCH resource to the first UE;

the second UE receives side link feedback control information sent by the first UE on the PSSCCH resource;

wherein the second UE indicates PSSCCH resources to the first UE, including:

the second UE sends an RRC message to the first UE; or, the second UE sends SCI to the first UE; the RRC message or the SCI comprises PSSCCH resource indication information, so that the first UE acquires PSSCCH resources according to the PSSCCH resource indication information; or,

the second UE sending the SCI to the first UE on PSCCH resources; or, the second UE sends data information to the first UE on the PSCCH resource, and implicitly indicates the PSCCH resource to the first UE through the PSCCH resource or the PSCCH resource.

In the above method, the indicating information of the PSSCCH resource indicates the RB where the PSSCCH resource is located, including:

In the above method, the receiving, by the second UE, the side link feedback control information sent by the first UE on the PSSCCH resource includes:

and the second UE receives the side link feedback control information sent by the first UE on the PSSCCH resource in a Physical Uplink Control Channel (PUCCH) format.

A method for acquiring control channel resources, the method comprising:

the network side equipment sends PSSCCH resource indication information to the first UE;

the network side equipment receives side link feedback control information sent by the first UE on the PSSCCH resource;

wherein, the PSSCCH resource indication information is carried in a high-level signaling;

and the network side equipment receives the side link feedback control information sent by the first UE on the PSSCCH resource in a Physical Uplink Control Channel (PUCCH) format.

In the above method, the high layer signaling is a radio resource control RRC message, and the indication of the PSSCCH resource is included in a prose commconfig information element; or, the higher layer signaling is a system message SIB, and the indication of the PSSCCH resource is contained in a special SIB.

In the above method, the side link feedback control information includes at least one of the following information: side link data receiving confirmation/non-confirmation information A/N, side link channel state information CSI, side link channel quality indication CQI information, side link channel rank indication RI information and side link channel precoding matrix indication PMI information.

In the above method, the network side device includes any one of the following devices: evolved node B eNB, relay node RN, cell cooperative entity MCE, gateway GW, mobility management equipment MME, evolved universal terrestrial radio access network EUTRAN operation management and maintenance OAM manager.

A user equipment, the user equipment comprising:

an obtaining module, configured to obtain a PSSCCH resource of a second control channel of a physical edge link;

a first sending module, configured to send side link feedback control information on the PSSCCH resource acquired by the acquiring module;

wherein the obtaining module is specifically configured to:

receiving a high-level signaling sent by a second UE or a network side device, wherein the high-level signaling comprises PSSCCH resource indication information; acquiring the PSSCCH resource according to the PSSCCH resource indication information; or,

receiving side link control information (SCI) sent by the second UE, wherein the SCI comprises PSSCCH resource indication information; acquiring the PSSCCH resource according to the PSSCCH resource indication information; or,

receiving SCI sent by the second UE on a PSCCH resource of a physical side link control channel, and acquiring the PSSCCH resource corresponding to the PSCCH resource according to a predefined PSCCH resource and PSSCCH resource index relation; or,

and receiving data information sent by the second UE on PSSCH resources of the physical side link shared channel, and acquiring the PSSCCH resources corresponding to the PSSCH resources according to a predefined PSSCH resource and PSSCCH resource index relation.

In the user equipment, the PSSCCH resource indication information indicates a sub-frame and/or a resource block RB where the PSSCCH resource is located; or,

In the above user equipment, the high layer signaling is a radio resource control RRC message, and the PSSCCH resource indication information is included in a prose commconfig information element; or, the high-level signaling is a system message SIB, and the PSSCCH resource indication information is contained in a special SIB.

In the user equipment, the PSSCCH resource indication information indicates the sub-frame where the PSSCCH resource is located, and includes:

In the above user equipment, the PSSCCH resource indication information indicates a resource block RB where the PSSCCH resource is located, including:

In the user equipment, when the PSSCCH resource indication information indicates the channel index number of the PSSCCH resource, the obtaining module is specifically configured to determine the sub-frame and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

In the above user equipment, the obtaining module is specifically configured to:

determining a sub-frame where the PSSCCH resource is located corresponding to the sub-frame where the PSCCH resource is located according to the PSCCH resource and PSSCCH resource index relation; or,

determining a time sequence relation between a subframe where the PSCCH resource is located and a subframe where the PSSCCH resource is located according to the index relation between the PSCCH resource and the PSSCCH resource, and determining the subframe where the PSSCCH resource is located according to the time sequence relation; or,

determining the RB index number of the RB in which the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, which corresponds to the RB index number of the RB in which the PSCCH resource is located, according to the index relationship between the PSCCH resource and the PSSCCH resource; or,

determining a sub-frame where the PSSCCH resource corresponding to a channel index number of the PSCCH resource is located according to the index relationship between the PSCCH resource and the PSSCCH resource; or,

determining the RB index number of the RB in which the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, which corresponds to the channel index number of the PSCCH resource, according to the index relationship between the PSCCH resource and the PSSCCH resource; or,

and determining the channel index number of the PSSCCH resource corresponding to the channel index number of the PSCCH resource according to the index relationship between the PSCCH resource and the PSSCCH resource, and determining the subframe and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

determining a sub-frame where the PSSCCH resource is located corresponding to the sub-frame where the PSSCH resource is located according to the PSSCH resource and PSSCCH resource index relation; or,

acquiring a time sequence relation between a sub-frame where the PSSCH resource is located and a sub-frame where the PSSCCH resource is located according to the PSSCH resource and PSSCCH resource index relation, and determining the sub-frame where the PSSCCH resource is located according to the time sequence relation; or,

determining the RB index number of the RB in which the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, which corresponds to the RB index number of the RB in which the PSSCH resource is located, according to the index relationship between the PSSCH resource and the PSSCCH resource; or,

determining a sub-frame where the PSSCCH resource is located corresponding to a channel index number of the PSSCH resource according to the PSSCH resource and PSSCCH resource index relation; or,

determining the RB index number of the RB where the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, which corresponds to the channel index number of the PSSCH resource, according to the index relationship between the PSSCH resource and the PSSCCH resource; or,

and acquiring a channel index number of the PSSCCH resource corresponding to the channel index number of the PSSCH resource according to the PSSCH resource-PSSCCH resource index relationship, and determining a sub-frame and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

A user equipment, the user equipment comprising:

a second sending module, configured to send an indication PSSCCH resource to the first UE;

a first receiving module, configured to receive side link feedback control information sent by the first UE on the PSSCCH resource;

the second sending module is specifically configured to: sending an RRC message to the first UE; or, sending the SCI to the first UE; wherein, the RRC message or the SCI includes PSSCCH resource indication information of a physical side link second control channel, so that the first UE acquires PSSCCH resources according to the PSSCCH resource indication information; or,

transmitting the SCI to the first UE on PSCCH resources; or, sending data information to the first UE on a PSCCH resource, and implicitly indicating the PSCCH resource to the first UE through the PSCCH resource or the PSCCH resource.

In the user equipment, the PSSCCH resource indication information indicates a subframe and/or RB where the PSSCCH resource is located; or,

the PSSCCH resource indication information indicates a channel index number of the PSSCCH resource;

wherein, the PSSCCH resource indication information indicates the sub-frame where the PSSCCH resource is located, including:

the PSSCCH resource indication information indicates a subframe number of a subframe where the PSSCCH resource is located; or,

the PSSCCH resource indication information indicates the time sequence relation between the sub-frame where the PSSCCH resource is located and the corresponding PSCCH resource or the sub-frame where the PSSCH resource is located;

the PSSCCH resource indication information indicates an RB where the PSSCCH resource is located, and the PSSCCH resource indication information includes:

In the foregoing user equipment, the first receiving module is specifically configured to:

and receiving the side link feedback control information sent by the first UE on the PSSCCH resource in a Physical Uplink Control Channel (PUCCH) format.

A network side device, the network side device comprising:

a third sending module, configured to send PSSCCH resource indication information to the first UE;

a second receiving module, configured to receive side link feedback control information sent by the first UE on the PSSCCH resource;

the second receiving module is specifically configured to: and receiving the side link feedback control information sent by the first UE on the PSSCCH resource in a Physical Uplink Control Channel (PUCCH) format.

In the above network side device, the high layer signaling is a radio resource control RRC message, and the indication of the PSSCCH resource is included in a prose commconfig information element; or, the higher layer signaling is a system message SIB, and the indication of the PSSCCH resource is contained in a special SIB.

In the method and apparatus for acquiring Control Channel resources provided in the embodiments of the present invention, a first UE acquires a Physical Sidelink Second Control Channel (PSSCCH), and carries and sends Sidelink feedback Control information on the acquired PSSCCH resources; the side link feedback control information may include at least one of side link data reception a/N information, side link CSI, side link CQI information, side link RI information, and side link PMI information, and provide reference information for the second UE or the network side device to use data transmission resources, so as to achieve the purposes of reducing interference, and improving the side link channel resource utilization rate and the D2D communication data transmission rate.

Drawings

Fig. 1 is a schematic diagram of a prior art D2D communication system;

fig. 2 is a flowchart of a method for acquiring control channel resources according to an embodiment of the present invention;

fig. 3 is a first diagram illustrating the determination of PSSCCH sub-frames according to the indicated timing relationship in the embodiment of the present invention;

fig. 4 is a diagram illustrating a second exemplary method for determining PSSCCH sub-frames according to the indicated timing relationship according to the embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating that an RB where PSSCCH resources are located is determined by indicating an RB index number through SCI information in the embodiment of the present invention;

fig. 6 is a schematic diagram illustrating that an RB in which PSSCCH resources are located is determined by indicating a relative RB index number by SCI information in the embodiment of the present invention;

fig. 7 is a diagram illustrating the determination of the PSSCCH sub-frame by the channel index number of the PSSCCH resource in the embodiment of the present invention;

fig. 8 is a diagram illustrating the determination of the PSSCCH RB by the channel index number of the PSSCCH resource in the embodiment of the present invention;

FIG. 9 is a diagram illustrating the determination of PSSCCH RB by the RB index number of the PSCCH resource in the example of the present invention;

FIG. 10 is a diagram illustrating the determination of PSSCCH sub-frames by the channel index number of PSSCH resources in accordance with an embodiment of the invention;

fig. 11 is a schematic diagram of determining the pschs RBs by the channel index numbers of PSCCH resources in an embodiment of the invention;

fig. 12 is a flowchart of a method for acquiring control channel resources according to a second embodiment of the present invention;

fig. 13 is a flowchart of a method for acquiring control channel resources according to a third embodiment of the present invention;

fig. 14 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a user equipment according to a second embodiment of the present invention;

fig. 16 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

In a D2D communication system, a D2D sending-end UE that has D2D data to send may send D2D scheduling control information on a PSCCH, indicating a receiving-end UE, and the sending-end UE sends D2D data on a corresponding PSCCH; D2D communication adopts a broadcast communication mode, and at this time, after the scheduling control information and corresponding data transmission are completed, the sending end UE cannot obtain feedback information whether data reception is correct from the receiving end UE; the receiving end UE cannot feed back the Sidelink measurement and status information to the sending end UE.

In each embodiment of the present invention, a receiving end UE (also referred to as a first UE in the embodiments of the present invention) acquires a PSSCCH resource, and carries and sends side link feedback control information on the acquired PSSCCH resource; providing reference information used by data transmission resources for a sending terminal UE (also called a second UE in the invention); therefore, the effects of reducing interference, and improving the utilization rate of side link channel resources and the transmission rate of D2D communication data can be achieved.

Wherein the side link feedback control information comprises at least one of the following information: side link channel data reception acknowledgement/non-acknowledgement information (A/N), side link Channel State Information (CSI), side link Channel Quality Indication (CQI) information, side link channel Rank Indication (RI) information, side link channel Precoding Matrix Indication (PMI) information.

In each embodiment of the invention, a resource pool can be configured for PSSCCH resources of a side link, the PSSCCH resource pools repeat according to a certain period, one or more PSSCCH sub-frames are included in the period of one PSSCCH resource pool, and each PSSCCH sub-frame includes one or more RBs; the PSSCCH resource pool can be determined by system predefining or high-level configuration; each PSSCCH resource comprises a subframe in the time domain and an RB pair in the frequency domain, so that the subframe and the RB where the PSSCCH resource is located are determined by determining one PSSCCH resource.

The following describes a method for acquiring control channel resources according to an embodiment of the present invention in detail.

Fig. 2 is a flowchart of a method for acquiring control channel resources according to an embodiment of the present invention. The method for acquiring the control channel resource provided in this embodiment may be specifically executed by the receiving end UE, and specifically, the method provided in this embodiment may include:

step 101, a first UE acquires PSSCCH resources;

and 102, the first UE sends side link feedback control information on the obtained PSSCCH resource.

In step 101, the acquiring, by the first UE, the PSSCCH resource may specifically include:

the first UE receives a high-level signaling sent by a second UE or a network side device, wherein the high-level signaling comprises PSSCCH resource indication information; the first UE acquires the PSSCCH resource according to the PSSCCH resource indication information; or, the first UE receives Sidelink Control Information (SCI) sent by the second UE, where the SCI includes PSSCCH resource indication Information; the first UE acquires the PSSCCH resource according to the PSSCCH resource indication information; or, the first UE receives SCI sent by the second UE on PSCCH resources, and acquires the PSSCCH resources corresponding to the PSCCH resources according to a predefined PSCCH resource and PSSCCH resource index relationship; or the first UE receives data information sent by the second UE on PSSCH resources, and acquires the PSSCCH resources corresponding to the PSSCH resources according to a predefined PSSCH resource-PSSCCH resource index relationship.

It should be noted that the higher layer signaling sent by the second UE or the network side device to the first UE may be a Radio Resource Control (RRC) message or a System Information Block (SIB) message sent by the network side device.

In this embodiment, the network side device may specifically include any one of the following devices: evolved Node B (eNB), Relay Node (RN), cell Coordination Entity (MCE), GateWay (GW), Mobility Management Equipment (MME), Evolved Universal Terrestrial Radio Access Network (EUTRAN) Operation Management and Maintenance (OAM) manager.

When the PSSCCH resource is indicated by the RRC message, the PSSCCH resource indication information may be specifically included in the prose commconfig information element; when the PSSCCH resource is indicated by the SIB, the indication of the PSSCCH resource is contained in a special SIB. The above-mentioned methods for acquiring the PSSCCH resource by the first UE may be combined arbitrarily without collision, which is not specifically limited in this embodiment.

In practical application, the PSSCCH resource indication information indicates a subframe and/or RB where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a channel index number of the PSSCCH resource.

For the case that the PSSCCH resource indication information indicates the sub-frame where the PSSCCH resource is located, optionally, the PSSCCH resource indication information may directly indicate the sub-frame number of the sub-frame where the PSSCCH resource is located, for example, indicate that the sub-frame number of the sub-frame where the PSSCCH resource is located is #2 or #8, and when a PSSCCH resource pool exists, the sub-frame indicated by the PSSCCH resource indication information should be the sub-frame in the PSSCCH resource pool.

For the case that the PSSCCH resource indication information indicates the sub-frame where the PSSCCH resource is located, optionally, the PSSCCH resource indication information may indicate a timing relationship between the sub-frame where the PSSCCH resource is located and the corresponding PSCCH resource or the sub-frame where the PSSCH resource is located.

In this embodiment, the PSCCH resource is used to carry side link feedback control information, where the side link feedback control information is directly related to side link data transmission or control indication information, for example, if the first UE indicates that it is required to report channel measurement feedback in the SCI received on the PSCCH resource, the first UE sends a CSI feedback report on the corresponding PSCCH resource; the first UE indicates PSSCH resources for side link data transmission in SCI received by the PSCCH resources, and receives a D2D communication data packet on the corresponding PSSCH resources according to the indication in the SCI, so that the first UE sends A/N feedback on the corresponding PSSCCH resources and is used for feeding back a receiving result of the data packet to a second UE at a data sending end.

Therefore, the PSSCCH resource has a certain corresponding relation with the PSCCH resource or the PSSCH resource, and the sub-frame where the corresponding PSSCCH resource is located can be indicated in the high-level signaling or SCI through indicating the time sequence relation between the PSCCH resource and the sub-frame where the corresponding PSSCH resource or the PSSCH resource is located.

For example, the PSCCH resource or the PSCCH resource is transmitted on the subframe # n, and the corresponding PSCCH resource is transmitted on the subframe # m, where the subframe interval between the subframe # n and the subframe # m is k, the timing relationship between the two is embodied by indicating the value of k in the RRC message or SCI, that is, the subframe where the corresponding PSCCH resource is located can be indicated; when the PSSCCH resource pool exists, the indicated PSSCCH sub-frame should be a sub-frame included in the PSSCCH resource pool, and the above timing relationship may be described as that the indicated PSSCCH sub-frame is the sub-frame # n + k, and is subsequent to the sub-frame # n + k and is included in the first sub-frame in the PSSCCH resource pool.

Assuming that the timing relationship between the PSCCH resource of the first UE and the corresponding PSCCH resource indicated by the second UE in the RRC message is k ═ 4, that is, subframe # m where the PSCCH resource is located is the 4 th subframe after subframe # n where the PSCCH resource is located, as shown in fig. 3, subframe #6 where the PSCCH resource is located, and subframe #0 where the corresponding PSCCH resource is located; the sub-frame #2 where the PSCCH resource is located, the sub-frame where the corresponding PSSCCH resource is located is # 6; in this embodiment, the subframe numbers are #0 to #9, # m is # n + k, and when n + k is greater than 9, m is equal to n + k, and modulo 10 is taken.

Supposing that a PSSCCH resource pool configured in the system comprises a plurality of sub-frames, and the network side indicates through an RRC message that the timing relationship between the sub-frame where the PSSCCH resource of the first UE is located and the sub-frame where the corresponding PSSCH resource is located is k equal to 3, the sub-frame # m where the PSSCCH resource is located is the first sub-frame contained in the PSSCCH resource pool in the 3 rd sub-frame and the following sub-frames after the sub-frame # n where the PSSCH resource is located. As shown in fig. 4, the pscscch resource pool includes subframe #2/3 in the first radio frame, subframe #6/7 in the second radio frame, and subframe #0/1 in the 4 th radio frame. When the PSSCH resource is in the sub-frame #1 of the first radio frame, according to the time sequence relationship that k is 3, in the sub-frame #4 and the following sub-frames, the first sub-frame contained in the PSSCCH resource pool is the sub-frame where the corresponding PSSCCH resource is located, namely the sub-frame #6 in the second radio frame; when the PSSCH resource is in the sub-frame #7 of the third radio frame, according to the timing relationship that k is 3, in the sub-frame #0 and the following sub-frames in the 4 th radio frame, the first sub-frame contained in the PSSCCH resource pool is the sub-frame where the corresponding PSSCCH resource is located, and the sub-frame #0 in the 4 th radio frame is the sub-frame in the PSSCCH resource pool, so the corresponding PSSCCH sub-frame is the sub-frame # 0.

For the case that the PSSCCH resource indication information indicates the RB where the PSSCCH resource is located, optionally, the PSSCCH resource indication information indicates the RB index number of the RB where the PSSCCH resource is located

Wherein, the RB index refers to that, on the system frequency domain resource, all frequency domain resources are divided by taking RB as a unit and numbered sequentially, and each RB uniquely corresponds to one RB index (index); RB index number for PSSCCH resource

I.e. representing RBs in the system bandwidth

Is used as the PSSCCH resource.

For example, the second UE indexes the RB by indicating the RB index number in the SCI

The RB where the PSSCCH resource is located is indicated to the first UE, and the first UE obtains the corresponding SCI from the RB

Indicating and using within system bandwidth

As PSSCCH resources, the RB in (1) carries corresponding feedback control information and sends the feedback control information to the second UE, as shown in fig. 5.

For the case that the PSSCCH resource indication information indicates the RB where the PSSCCH resource is located, optionally, the PSSCCH resource indication information indicates the relative RB index number of the PSSCCH resource in the PSSCCH resource pool

The relative RB index numbers in the PSSCCH resource pool mean that the defined PSSCCH resource pool includes one or more RBs, the plurality of RBs in the resource pool may be continuous or discrete RBs in the frequency domain, and the RBs included in the PSSCCH resource pool are sequentially numbered, so that each RB uniquely corresponds to one RB index; relative RB index number for PSSCCH resources

I.e. in all RBs in the PSSCCH resource pool,

is used as the PSSCCH resource.

For example, the second UE indexes the relative RB index number by indicating the relative RB in the SCI

Indicating the RB configuration of PSSCCH resources in a PSSCCH resource pool to the first UE, and obtaining the corresponding SCI from the first UE after the first UE receives the corresponding SCI

Indicating and determining the RB of the PSSCCH resource pool

As PSSCCH resources, the RB in (1) carries corresponding feedback control information and sends the feedback control information to the second UE, as shown in fig. 6.

And for the condition that the PSSCCH resource indication information indicates the channel index number of the PSSCCH resource, the first UE determines the sub-frame and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

It should be noted that, with all available PSSCCH sub-frames and the available RBs on each PSSCCH sub-frame, the channel index number of each PSSCCH resource may be defined according to that each PSSCCH resource includes one RB pair on one sub-frame, so that the sub-frame and/or RB of the corresponding PSSCCH resource may be uniquely determined by the channel index number of one PSSCCH resource.

Channel index number for the first UE according to the PSSCCH resource

Determining the sub-frame of the PSSCCH resource, optionally, the first UE indexes the channel of the PSSCCH resourceNumber index _PSSCCH i, carrying out modular operation on T, and determining a subframe # m where the PSSCCH resource is located _i ：i＝index _PSSCCH imodT。

For the case that the first UE determines the sub-frame where the PSSCCH resource is located according to the channel index of the PSSCCH resource, optionally, the first UE may determine the channel index of the PSSCCH resource according to the channel index of the PSSCCH resource _PSSCCH i is divided by T and is subjected to rounding-down operation, and the sub-frame where the PSSCCH resource is located is determined

For the case that the first UE determines the sub-frame where the PSSCCH resource is located according to the channel index of the PSSCCH resource, optionally, the first UE may determine the channel index of the PSSCCH resource according to the channel index of the PSSCCH resource _PSSCCH i is divided by T and rounded up operation is carried out to determine the sub-frame where the PSSCCH resource is located

Wherein T is a positive integer, and the value of T is any one of the following: the number of sub-frames in a PSSCCH resource pool in a period; the number of subframes used for side link transmission in a period; the number of subframes in a PSCCH resource pool in a period; the number of subframes in the PSSCH resource pool within the period.

Further, according to PSSCCH resource index number index _PSSCCH i, and system defined index _PSSCCH i and corresponding PSSCCH sub-frame # m _i Rule between, i value, subframe # m can be determined as described above _i The meaning of (b) is related to the value mode of T, and specifically comprises:

when T represents the number of sub-frames in the PSSCCH resource pool in a period, all sub-frames contained in the PSSCCH resource pool in one period are numbered as sub-frames #0, #1, # …, # T-1 in sequence, and then the PSSCCH sub-frame # m _i I.e. to subframe # i in the resource pool. The resource pool for D2D communication can be configured according to period, the resource pool configuration in each period is the same or circularly mapped according to a certain rule, and the mapping is carried out on PSCCH and/or PSSCH and/or PSSCCThe H resource pool is generally configured with the same cycle, that is, a uniform cycle is configured for the three channel resource pools, and the same cycle start subframe position, and when the cycle in D2D communication refers to the uniform cycle configuration, the H resource pool may be referred to as a PSCCH resource pool cycle, a pscsch resource pool cycle, or a PSCCH resource pool cycle, unless otherwise specified. In addition, it is not excluded that different periods or starting positions are configured for the three channel resource pools in a special scenario.

When T denotes the number of subframes used for sidelink transmission, the subframes available for all sidelink transmissions are numbered sequentially as subframes #0, #1, # …, # T-1, then PSSCCH subframe # m _i I.e. to subframe # i therein.

When T represents the number of subframes in the PSCCH resource pool in a period, all the subframes in the PSCCH resource pool in one period are numbered as subframes #0, #1, # …, # T-1 in sequence, then PSSCCH subframe # m _i I.e. to subframe # i in the resource pool.

When T represents the number of the sub-frames in the PSSCH resource pool in a period, all the sub-frames contained in the PSSCH resource pool in one period are numbered as sub-frames #0, #1, # …, # T-1 in sequence, and then the sub-frame # m of the PSSCCH _i I.e. to subframe # i in the resource pool.

For example, the network side device indicates, by means of an RRC message, the first UE that the channel index number of the configured PSSCCH resource is index _PSSCCH i, using index in the system _PSSCCH i carries out modular operation on T and determines a sub-frame # m corresponding to PSSCCH resource _i Wherein, T is the number of sub-frames in the PSSCCH resource pool, and the first UE obtains index from the RRC message indication of the network side after receiving the RRC message indication of the network side _PSSCCH i-14 and the PSSCCH resource pool contains 8 subframes, as shown in fig. 7, i.e. T-8, then subframe # m of the configured PSSCCH resource can be determined _i Comprises the following steps: i-index _PSSCCH imod T＝14mod 8＝6。

That is, the subframe in which the configured PSSCCH resource is located is the 7 th subframe in the PSSCCH resource pool, that is, subframe #3 in the last radio frame in fig. 7, and further, the first UE carries and sends the side link feedback control information to the second UE on the indicated PSSCCH resource.

For the case that the first UE determines the RB in which the PSSCCH resource is located according to the channel index of the PSSCCH resource, optionally, the first UE uses the channel index of the PSSCCH resource _PSSCCH i, carrying out modular operation on the F, and determining the RB index number of the PSSCCH resource

Or, determining the relative RB index number of the PSSCCH resource in a PSSCCH resource pool

Or,

for the case that the first UE determines the RB in which the PSSCCH resource is located according to the channel index of the PSSCCH resource, optionally, the first UE uses the channel index of the PSSCCH resource _PSSCCH i is divided by F and carries out the operation of rounding down, and the RB index number where the PSSCCH resource is positioned is determined

Or determining the relative RB index number of the PSSCCH resource in a PSSCCH resource pool

Or,

determining the PS for the first UE according to the channel index number of the PSSCCH resourceOptionally, in the case of the RB in which the SCCH resource is located, the first UE may use the channel index of the PSSCCH resource _PSSCCH i is divided by F and is rounded up, and the RB index number of the PSSCCH resource is determined

Or,

For example, the second UE indicates in the SCI that the channel index number of the configured pschs resource is index for the first UE _PSSCCH i, using index in the system _PSSCCH Dividing i by F rounding-down operation to determine RB of PSSCCH resource, wherein F is the number of RBs in a PSSCCH resource pool, and after receiving SCI information, the first UE obtains index from the SCI information _PSSCCH i-27 and 10 RBs in the PSSCCH resource pool as shown in fig. 8, i.e. F-10, the relative RB index of the configured PSSCCH resource can be determined

Comprises the following steps:

that is, the RB in which the pscscch resource is located is an RB with an RB index of 2 in the pscscch resource pool.

In the technical scheme, the sub-frame and/or RB resource of the configured PSSCCH resource is indicated by the channel index number indicating the PSSCCH resource, so that the resource indication overhead can be reduced, flexible resource configuration is provided, the PSSCCH resource requirement of the UE is met, and the effects of fully utilizing system resources, coordinating interference and improving the resource utilization rate are achieved.

In another implementation, the index relationship between the PSCCH resource and the corresponding PSCCH resource or PSCCH resource may be predefined, so that the corresponding PSCCH resource may be obtained according to the PSCCH resource or PSCCH resource; namely, the sub-frame and/or RB resource of the PSSCCH resource is determined according to the predefined index relation between the PSCCH/PSSCH resource and the corresponding PSSCCH resource, so that the corresponding PSSCCH resource can be implicitly indicated for the first UE without any signaling indication overhead, the resource indication overhead is greatly reduced, meanwhile, more flexible resource configuration is provided, the PSSCCH resource requirement of the UE is met, the system resource is fully utilized, the interference is coordinated, and the resource utilization rate is improved.

Optionally, the first UE may determine, according to the PSCCH/PSCCH resource-PSSCCH resource index relationship, a subframe where the PSCCH resource is located, and the PSCCH/PSCCH resource is located.

Specifically, the system predefines a one-to-one corresponding index relationship between a sub-frame # n where the PSCCH/PSCCH resource is located and a sub-frame # m where the PSCCH resource is located, so as to form a fixed index relationship, and after the sub-frame # n receives information on the PSCCH/PSCCH resource, the first UE correspondingly carries and sends corresponding side link feedback control information on the PSCCH resource on the sub-frame # m.

Optionally, the first UE obtains a timing relationship between a subframe where the PSCCH resource is located and a subframe where the PSCCH resource is located according to the PSCCH/PSCCH resource and PSCCH resource index relationship, and determines the subframe where the PSCCH resource is located according to the timing relationship.

Specifically, a relative timing relationship is predefined by the system between a sub-frame # m in which the PSCCH resource is located and a sub-frame # n in which the corresponding PSCCH/PSCCH resource is located, that is, a sub-frame interval k between the sub-frame # m and the sub-frame # n, and the sub-frame # m is the kth sub-frame after the sub-frame # n. Further, when there is a PSSCCH resource pool configuration, the indicated PSSCCH sub-frame should be a sub-frame included in the PSSCCH resource pool, and the timing relationship may be described as that the indicated PSSCCH sub-frame is the sub-frame # n + k, and is subsequent to the sub-frame # n + k and is included in the first sub-frame in the PSSCCH resource pool; and if n + k is greater than 9, m is equal to n + k and takes a modulus of 10.

It will be appreciated that when the corresponding psch resource comprises a plurality of sub-frames, the corresponding pscch sub-frame # m is further determined with the first or last psch sub-frame as sub-frame # n, over the plurality of psch sub-frames; when multiple repeated transmissions of the same data packet are carried on the corresponding PSSCH resource, a corresponding PSSCCH sub-frame # m is further determined, with the first or last PSSCH sub-frame as sub-frame # n, among a corresponding plurality of PSSCH sub-frames used for carrying multiple transmissions of the same data packet.

For example, in TDD system, an index relationship between subframe # n and subframe # m is predefined, as shown in table one.

Watch 1

According to the index relationship between the sub-frame # n and the sub-frame # m defined by the system, after the first UE receives the information on the PSCCH/PSSCH resource in the sub-frame # n, the sub-frame # m where the corresponding PSSCCH resource is located can be determined according to the corresponding index relationship; for example, the system adopts TDD configuration #1, and the first UE receives the SCI indication on subframe #2 and requires feedback of the measurement report of the sidelink, so that the first UE carries the sidelink CSI report on the pscch resource on subframe #7 and sends the feedback to the second UE.

Optionally, the first UE determines an RB index number of an RB in which the PSCCH/PSCCH resource is located according to the PSCCH/PSCCH resource and PSCCH resource index relationship

Corresponding RB index number of RB in which PSSCCH resource is positioned

Or relative RB index number in PSSCCH resource pool

In particular, the RB index number of the RB in which the PSCCH/PSSCH resource is located may be predefined by the system

And PSSCCH resource index number

The index relationship between the two groups of the index blocks is in one-to-one correspondence to form a fixed index relationship.

The first UE determines the RB index number of the RB where the PSCCH/PSSCH resource is located according to the index relation

Corresponding RB index number of RB in which the PSSCCH resource is positioned

Or relative RB index number in PSSCCH resource pool

The method can comprise the following steps:

will be provided with

Performing modular operation on the F, and determining the RB where the PSSCCH resource is located:

or,

or, the first UE will

Dividing by F and carrying out rounding-down operation to determine the RB where the PSSCCH resource is located:

or,

or, the first UE will

Dividing by F and carrying out upward rounding operation to determine the RB where the PSSCCH resource is located:

or,

wherein F is a positive integer, and the value of F is any one of the following: the number of RBs in the PSSCCH resource pool; the number of RBs used for sidelink transmission; the number of RBs within the system bandwidth; a fixed value predefined by the system; the number of RBs in the PSCCH resource pool; number of RBs in PSSCH resource pool.

When the psch resource includes a plurality of RBs, the RB index number is set to be the minimum value or the maximum value of the RB index number among the plurality of RBs

For example, the first UE is in RB

On receiving SCI information of the second UEIn the system, the

Dividing by F to get integer operation, determining RB index number of PSSCCH resource

Wherein, F is the number of RBs in the PSCCH resource pool.

For example, when

The number of RBs in the PSCCH resource pool is 20, i.e., F-20, as shown in fig. 9, then the RB index of the configured PSCCH resource can be determined

Comprises the following steps:

that is, the RB in which the configured PSSCCH resource is located is an RB with RB index equal to 1 in the system bandwidth, and further, the first UE sends the sidelink feedback control information to the second UE on the indicated PSSCCH resource.

Optionally, the first UE obtains a channel index number index of the PSCCH/PSCCH resource according to the PSCCH/PSCCH resource and PSCCH resource index relationship _PSCCH i/index _PSSCH i is corresponding to the sub-frame and/or RB where the PSSCCH resource is located.

Specifically, the first UE determines a channel index associated with the PSCCH/PSCCH resource _PSCCH i/index _PSSCH i corresponding to the sub-frame # m of the PSSCCH resource _i The method comprises the following steps:

the first UE sends index _PSCCH i/index _PSSCH i carries out modular operation on T and determines the sub-frame # m where the PSSCCH resource is located _i ：i＝index _PSCCH imod T，i＝index _PSSCH imod T; or, the first UE sends index to the second UE _PSCCH i/index _PSSCH i is divided by T and rounded-down operation is carried out, and the sub-frame # m where the PSSCCH resource is located is determined _i ：

Or, the first UE sends index to the second UE _PSCCH i/index _PSSCH i is divided by T and is rounded up, and the sub-frame # m where the PSSCCH resource is located is determined _i ：

Specifically, the first UE determines a channel index associated with the PSCCH/PSCCH resource _PSCCH i/index _PSSCH i corresponding to RB index number of RB in which PSSCCH resource is located

Or relative RB index number in PSSCCH resource pool

The method can comprise the following steps:

the first UE sends index _PSCCH i/index _PSSCH i, performing modular operation on the F, and determining an RB (resource block) in which the PSSCCH resource is positioned:

or,

or, the first UE sends index to the second UE _PSCCH i/index _PSSCH Dividing i by F and carrying out rounding-down operation to determine the RB where the PSSCCH resource is located:

or,

or, the first UE sends index to the second UE _PSCCH i/index _PSSCH Dividing i by F and carrying out upward rounding operation to determine the RB where the PSSCCH resource is located:

or,

wherein, F is a positive integer, and the value of F is any one of the following: the number of RBs in the PSSCCH resource pool; the number of RBs used for sidelink transmission; the number of RBs within the system bandwidth; a fixed value predefined by the system; the number of RBs in the PSCCH resource pool; number of RBs in the psch resource pool.

For example, the first UE receives data information of the second UE on the psch resource and obtains a channel index of the psch resource used by the second UE _PSSCH i, use index in the system _PSSCH Dividing i by T to get integer upwards, and determining the sub-frame # m corresponding to PSSCCH resource _i Wherein T is the number of sub-frames in the PSSCH resource pool; first UE obtains index _PSSCH i-56 and the pscch resource pool contains 24 subframes, as shown in fig. 10, i.e. T-24, it may be determined the subframe # m of the configured pscch resource _i Comprises the following steps:

that is, the subframe in which the configured PSCCH resource is located is the 4 th subframe in the PSCCH resource pool, that is, subframe #9 in the second radio frame shown in fig. 10, and further, the first UE carries and sends the side link feedback control information to the second UE on the obtained PSCCH resource.

For another example, the first UE receives the SCI indication of the second UE on the PSCCH resource, and obtains the channel index of the PSCCH resource used by the second UE _PSCCH i, using index in the system _PSCCH And dividing i by F to carry out rounding-up operation to determine the RB of the PSSCCH resource, wherein F is a fixed value predefined by the system. Index obtained by first UE _PSCCH i-15 and F-10, the RB index of the configured PSSCCH resource may be determined

Comprises the following steps:

that is, the RB in which the configured pscscch resource is located is an RB with an RB index of 2 in the system bandwidth, and as shown in fig. 11, the first UE further carries and sends the sidelink feedback control information to the second UE on the indicated pscscch resource.

In step 102, the first UE may specifically send the side link feedback Control information in a Physical Uplink Control Channel (PUCCH) format on the obtained PSSCCH resource, where the side link feedback Control information specifically includes PUCCH format 1/1a/1b/2/2a/2 b/3; the side link feedback control information comprises at least one of the following information: side link A/N, side link channel state information CSI, side link CQI information, side link RI information, and side link PMI information.

According to the technical scheme of the embodiment, the first UE provides reference information of the use condition of the data transmission resource for the sending end UE by acquiring the PSSCCH resource and sending the side link feedback control information on the acquired PSSCCH resource, so that the effects of reducing interference and improving the utilization rate of the new arrival resource of the side link and the data transmission rate are achieved.

Fig. 12 is a flowchart of a method for acquiring control channel resources according to a second embodiment of the present invention. The method provided in this embodiment may be specifically executed by a sending end UE, as shown in fig. 12, the method provided in this embodiment may specifically include:

step 201, the second UE indicates the PSSCCH resource to the first UE.

Specifically, the second UE may send an RRC message to the first UE; or, the second UE sends SCI to the first UE; wherein, the RRC message or the SCI includes PSSCCH resource indication information, so that the first UE acquires PSSCCH resources according to the PSSCCH resource indication information; or, the second UE sends SCI to the first UE on PSCCH resources; or, the second UE transmits data information to the first UE on the psch resource.

It should be noted that, the second UE may directly indicate the PSSCCH resource to the first UE by sending the SCI including the PSSCCH resource indication information to the first UE; or, by sending SCI to the first UE on a PSCCH resource, implicitly indicating the PSCCH resource to the first UE, so that the first UE obtains the corresponding PSCCH resource according to the correspondence between the PSCCH resource and the PSCCH resource, and SCI sent to the first UE on the PSCCH resource does not include PSCCH resource indication information.

Step 202, the second UE receives the side link feedback control information sent by the first UE on the PSSCCH resource.

In step 201, the PSSCCH resource indication information indicates a subframe and/or an RB where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a channel index number of the PSSCCH resource.

Specifically, the step of indicating the sub-frame where the PSSCCH resource is located by the PSSCCH resource indication information includes: the PSSCCH resource indication information indicates a subframe number of a subframe where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a time sequence relation between a sub-frame where the PSSCCH resource is located and a corresponding sub-frame where the PSCCH resource or the PSSCH resource is located.

Specifically, the indicating information of the PSSCCH resource indicates the RB where the PSSCCH resource is located, including: the PSSCCH resource indication information indicates the RB index number of the RB in which the PSSCCH resource is positioned; or, the PSSCCH resource indication information indicates a relative RB index number of the PSSCCH resource in a PSSCCH resource pool.

In step 202, the second UE may specifically receive the side link feedback control information sent by the first UE in the PUCCH format on the PSSCCH resource, where the side link feedback control information includes at least one of the following information: side link A/N, side link CSI, side link CQI information, side link RI information, and side link PMI information.

The technical scheme of the embodiment can improve the utilization rate of the side link channel resource.

Fig. 13 is a flowchart of a method for acquiring control channel resources according to a third embodiment of the present invention. The method provided in this embodiment may be specifically executed by a network side device, as shown in fig. 13, the method provided in this embodiment may specifically include:

step 301, the network side device sends PSSCCH resource indication information to the first UE.

Wherein, the PSSCCH resource indication information is carried in the high-level signaling.

Specifically, the higher layer signaling may be an RRC message, and the indication of the PSSCCH resource is included in a prose commconfig information element; alternatively, the higher layer signaling may be an SIB, and the indication of the PSSCCH resources is included in a dedicated SIB.

In this embodiment, the network side device may include one or more of the following entities: eNB, RN, MCE, GW, MME, EUTRAN, OAM manager. This embodiment is not particularly limited to this.

Step 302, the network side device receives the side link feedback control information sent by the first UE on the PSSCCH resource.

In this step, the network side device may receive the side link feedback control information sent by the first UE in the PUCCH format on the PSSCCH resource; wherein the side link feedback control information comprises at least one of the following information: side link A/N, side link CSI, side link CQI information, side link RI information, and side link PMI information.

The technical scheme of the embodiment can improve the utilization rate of the side link channel resources and the D2D data transmission rate.

Fig. 14 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in fig. 14, the user equipment provided in this embodiment may specifically include:

an obtaining module 11, configured to obtain a PSSCCH resource; a first sending module 12, configured to send the side link feedback control information on the PSSCCH resource acquired by the acquiring module 11.

Specifically, the obtaining module 11 is specifically configured to: receiving a high-level signaling sent by a second UE or a network side device, wherein the high-level signaling comprises PSSCCH resource indication information; acquiring the PSSCCH resource according to the PSSCCH resource indication information; or, receiving an SCI sent by the second UE, where the SCI includes PSSCCH resource indication information; acquiring the PSSCCH resource according to the PSSCCH resource indication information; or, receiving the SCI sent by the second UE on the PSCCH resource, and acquiring the PSSCCH resource corresponding to the PSCCH resource according to the predefined PSCCH resource and PSSCCH resource index relationship; or receiving data information sent by the second UE on PSSCH resources, and acquiring the PSSCCH resources corresponding to the PSSCH resources according to a predefined PSSCH resource-PSSCCH resource index relationship.

The PSSCCH resource indication information indicates a subframe and/or RB where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a channel index number of the PSSCCH resource.

Wherein, the higher layer signaling may be an RRC message, and the PSSCCH resource indication information is included in a prosecomm configuration information element; alternatively, the higher layer signaling may be an SIB, and the pschs resource indication information is included in a dedicated SIB.

The network side device comprises any one of the following devices: eNB, RN, MCE, GW, MME, EUTRAN and OAM manager.

The PSSCCH resource indication information indicates a subframe where the PSSCCH resource is located, and the method comprises the following steps: the PSSCCH resource indication information indicates a subframe number of a subframe where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a timing relationship between a sub-frame where the PSSCCH resource is located and a sub-frame where the corresponding PSCCH resource or PSSCH resource is located.

The PSSCCH resource indication information indicates an RB where the PSSCCH resource is located, and the PSSCCH resource indication information includes: the PSSCCH resource indication information indicates an RB index number of an RB in which the PSSCCH resource is positioned; or, the PSSCCH resource indication information indicates a relative RB index number of the PSSCCH resource in a PSSCCH resource pool.

When the PSSCCH resource indication information indicates the channel index number of the PSSCCH resource, the obtaining module 11 is specifically configured to determine the sub-frame and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

The obtaining module 11 is specifically configured to: determining a sub-frame where the PSSCCH resource is located corresponding to the sub-frame where the PSCCH resource is located according to the index relation between the PSCCH resource and the PSSCCH resource; or determining a time sequence relation between a subframe where the PSCCH resource is located and a subframe where the PSSCCH resource is located according to the index relation between the PSCCH resource and the PSSCCH resource, and determining the subframe where the PSSCCH resource is located according to the time sequence relation; or, according to the PSCCH resource and PSSCCH resource index relation, determining the RB index number of the RB in which the PSSCCH resource is located or the relative RB index number in the PSSCCH resource pool, which corresponds to the RB index number of the RB in which the PSCCH resource is located; or determining a sub-frame where the PSSCCH resource corresponding to the channel index number of the PSCCH resource is located according to the index relationship between the PSCCH resource and the PSSCCH resource; or, according to the PSCCH resource and PSSCCH resource index relation, determining the RB index number of the RB in which the PSSCCH resource is located corresponding to the channel index number of the PSCCH resource or the relative RB index number in a PSSCCH resource pool; or determining the channel index number of the PSSCCH resource corresponding to the channel index number of the PSCCH resource according to the index relationship between the PSCCH resource and the PSSCCH resource, and determining the subframe and/or RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

The obtaining module 11 is specifically configured to: determining a sub-frame where the PSSCCH resource is located corresponding to the sub-frame where the PSSCH resource is located according to the PSSCH resource and PSSCCH resource index relationship; or acquiring a time sequence relation between a sub-frame where the PSSCH resource is located and a sub-frame where the PSSCCH resource is located according to the PSSCH resource and PSSCCH resource index relation, and determining the sub-frame where the PSSCCH resource is located according to the time sequence relation; or determining the RB index number of the RB in which the PSSCCH resource is located or the relative RB index number in the PSSCCH resource pool, which corresponds to the RB index number of the RB in which the PSSCH resource is located, according to the PSSCH resource and PSSCCH resource index relationship; or determining a sub-frame where the PSSCCH resource is located corresponding to a channel index number of the PSSCH resource according to the PSSCH resource and PSSCCH resource index relationship; or determining the RB index number of the RB where the PSSCCH resource is located corresponding to the channel index number of the PSSCH resource or the relative RB index number in a PSSCCH resource pool according to the index relationship between the PSSCH resource and the PSSCCH resource; or acquiring the channel index number of the PSSCCH resource corresponding to the channel index number of the PSSCH resource according to the index relationship between the PSSCH resource and the PSSCCH resource, and determining the sub-frame and/or the RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

The obtaining module 11 is specifically configured to: the sub-frame where the PSCCH resource or the PSSCH resource is located is a sub-frame # n, the sub-frame where the corresponding PSSCCH resource is located is a sub-frame # m, wherein the index relationship between the sub-frame # n and the sub-frame # m is predefined by a system; the sub-frame where the PSCCH resource or the PSSCH resource is located is a sub-frame # n, and the sub-frame where the corresponding PSSCCH resource is located is a sub-frame # n + k, wherein k is a positive integer and is predefined by a system; the sub-frame where the PSCCH resource or the PSSCH resource is located is a sub-frame # n, the sub-frame where the corresponding PSSCCH resource is located is a sub-frame # m, the sub-frame # m is a sub-frame # n + k and later, the sub-frame # m is a sub-frame in the PSSCCH resource pool, wherein k is a positive integer and is predefined by a system; wherein n and m take the value of 0-9.

Further, the obtaining module 11 is specifically configured to determine a subframe where the PSSCCH resource is located according to the subframe where the PSSCH resource is located, and when the PSSCH resource includes multiple subframes, in the multiple PSSCH subframes, use the first or last PSSCH subframe as the subframe # n.

The obtaining module 11 is specifically configured to, when determining an RB index number of an RB in which the PSSCH resource is located corresponding to an RB index number of an RB in which the PSSCH resource is located or a relative RB index number in a PSSCCH resource pool according to the PSSCH resource-PSSCH resource index relationship, determine that the PSSCH resource includes multiple RBs, and use a minimum value or a maximum value of the RB index numbers as the RB index number of the RB in which the PSSCH resource is located in the multiple RBs.

Further, the obtaining module 11 is specifically configured to perform a modulo operation on the channel index number of the PSCCH resource, or the channel index number of the PSCCH resource by T, and determine a subframe where the PSCCH resource is located; or dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by T, and performing a rounding-down operation to determine a subframe where the PSSCCH resource is located; or dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by T, and performing rounding-up operation to determine the sub-frame where the PSSCCH resource is located; wherein T is a positive integer, and the value of T is any one of the following: the number of sub-frames in a PSSCCH resource pool in a period; the number of subframes used for side link transmission in the period; the number of subframes in a PSCCH resource pool in a period; the number of subframes in the PSSCH resource pool within the period.

The obtaining module 11 is specifically configured to: performing modular operation on the F by using the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource, and determining the RB where the PSSCCH resource is located; or dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by F, and performing a down rounding operation to determine the RB where the PSSCCH resource is located; or dividing the channel index number of the PSSCCH resource, or the channel index number of the PSCCH resource, or the channel index number of the PSSCH resource by F, and performing rounding-up operation to determine the RB where the PSSCCH resource is located; wherein F is a positive integer, and the value of F is any one of the following: the number of RBs in the PSSCCH resource pool; the number of RBs used for sidelink transmission; the number of RBs within the system bandwidth; a fixed value predefined by the system; the number of RBs in the PSCCH resource pool; number of RBs in PSSCH resource pool.

The first sending module 12 is specifically configured to: sending the side link feedback control information in a Physical Uplink Control Channel (PUCCH) format on the PSSCCH resource acquired by the acquisition module 11; the side link feedback control information comprises at least one of the following information: side link A/N, side link CSI, side link CQI information, side link RI information, and side link PMI information.

The user equipment of this embodiment may be configured to implement the technical solution of the method embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.

In practical applications, the obtaining module 11 and the first sending module 12 may be implemented by a Central Processing Unit (CPU), a microprocessor unit (MPU), a Digital Signal Processor (DSP), or a Field Programmable Gate Array (FPGA) on a network-side device.

Fig. 15 is a schematic structural diagram of a user equipment according to a second embodiment of the present invention. As shown in fig. 15, the user equipment provided in this embodiment may specifically include:

a second sending module 21, configured to indicate the PSSCCH resource to the first UE;

a first receiving module 22, configured to receive the side link feedback control information sent by the first UE on the PSSCCH resource.

Specifically, the second sending module 21 may send an RRC message to the first UE; or, sending the SCI to the first UE; wherein, the RRC message and the SCI contain PSSCCH resource indication information, so that the first UE acquires PSSCCH resources according to the PSSCCH resource indication information; or, transmitting the SCI to the first UE on PSCCH resources; or, sending data information to the first UE on the PSCCH resource, and implicitly indicating the PSCCH resource to the first UE through the PSCCH resource or the PSCCH resource.

Wherein, the PSSCCH resource indication information indicates the sub-frame and/or RB where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a channel index number of the PSSCCH resource.

The PSSCCH resource indication information indicates a subframe where the PSSCCH resource is located, and the method comprises the following steps: the PSSCCH resource indication information indicates the subframe number of the sub-frame where the PSSCCH resource is located; or, the PSSCCH resource indication information indicates a time sequence relation between a sub-frame where the PSSCCH resource is located and a corresponding sub-frame where the PSCCH resource or the PSSCH resource is located.

The PSSCCH resource indication information indicates an RB where the PSSCCH resource is located, and the PSSCCH resource indication information includes: the PSSCCH resource indication information indicates the RB index number of the RB in which the PSSCCH resource is positioned; or, the PSSCCH resource indication information indicates a relative RB index number of the PSSCCH resource in a PSSCCH resource pool.

The first receiving module 22 is specifically configured to: receiving the side link feedback control information sent by the first UE in a PUCCH format on the PSSCCH resource; the side link feedback control information comprises at least one of the following information: side link A/N, side link CSI, side link CQI information, side link RI information, and side link PMI information.

The user equipment of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 12, and the implementation principle and the technical effect are similar, which are not described herein again.

In practical applications, the second sending module 21 and the first receiving module 22 may be implemented by a CPU, an MPU, a DSP, or an FPGA located on the user equipment.

Fig. 16 is a schematic structural diagram of a network-side device according to an embodiment of the present invention. As shown in fig. 16, the network-side device provided in this embodiment may specifically include:

a third sending module 31, configured to send PSSCCH resource indication information to the first UE;

a second receiving module 32, configured to receive the side link feedback control information sent by the first UE on the PSSCCH resource.

Specifically, the PSSCCH resource indication information is carried in a high-level signaling; the second receiving module 32 is specifically configured to: receiving the side link feedback control information sent by the first UE in a PUCCH format on the PSSCCH resource; the side link feedback control information comprises at least one of the following information: side link A/N, side link CSI, side link CQI information, side link RI information, and side link PMI information.

Wherein, the higher layer signaling may be an RRC message, and the indication of the PSSCCH resource is included in a prose commconfig information element; alternatively, the higher layer signaling may be an SIB, and the indication of the pschs resources is included in a dedicated SIB.

The network side device described in this embodiment may specifically include any one of the following devices: eNB, RN, MCE, GW, MME, EUTRAN and OAM manager.

The network side device of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 13, and the implementation principle and the technical effect are similar, which are not described herein again.

In practical applications, the third sending module 31 and the second receiving module 32 may be implemented by a CPU, an MPU, a DSP, or an FPGA located on the network-side device.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A method for acquiring control channel resources, the method comprising:

wherein the obtaining, by the first UE, the PSSCCH resource includes:

the first UE receives SCI sent by the second UE on PSCCH resources of a physical side link control channel, and acquires the PSSCCH resources corresponding to the PSCCH resources according to a predefined PSCCH resource and PSSCCH resource index relation;

the first UE acquires the PSSCCH resource corresponding to the PSCCH resource according to the index relation between the pre-defined PSCCH resource and the PSSCCH resource, and the method comprises the following steps:

the first UE determines the RB index number of the RB where the PSSCCH resource is located corresponding to the RB index number of the RB where the PSCCH resource is located or the relative RB index number in a PSSCCH resource pool according to the index relation between the PSCCH resource and the PSSCCH resource; or,

and the first UE determines the channel index number of the PSSCCH resource corresponding to the channel index number of the PSCCH resource according to the index relationship between the PSCCH resource and the PSSCCH resource, and determines the RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

2. The method of claim 1, wherein the first UE sending side link feedback control information on the obtained PSSCCH resources comprises:

3. The method according to claim 1 or 2, wherein the side link feedback control information comprises at least one of the following information: side link data receiving confirmation or non-confirmation information A or N, side link channel state information CSI, side link channel quality indication CQI information, side link channel rank indication RI information and side link channel precoding matrix indication PMI information.

4. A method for acquiring control channel resources, the method comprising:

wherein the obtaining, by the first UE, the PSSCCH resource includes:

the first UE receives data information sent by a second UE on PSSCH resources of physical side link shared channels, and acquires the PSSCCH resources corresponding to the PSSCH resources according to a predefined PSSCH resource and PSSCCH resource index relation;

the first UE acquires the PSSCCH resource corresponding to the PSSCH resource according to a predefined PSSCH resource and PSSCCH resource index relation, and the method comprises the following steps:

the first UE determines the RB index number of the RB where the PSSCCH resource is located or the relative RB index number in a PSSCCH resource pool, which corresponds to the RB index number of the RB where the PSSCH resource is located, according to the index relation between the PSSCH resource and the PSSCCH resource; or,

and the first UE acquires the channel index number of the PSSCCH resource corresponding to the channel index number of the PSSCH resource according to the index relationship between the PSSCH resource and the PSSCCH resource, and determines the RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

5. The method of claim 4, wherein the first UE sends side link feedback control information on the acquired PSSCCH resource, and wherein the method comprises:

6. The method according to claim 4 or 5, wherein the side link feedback control information comprises at least one of the following information: side link data receiving confirmation or non-confirmation information A or N, side link channel state information CSI, side link channel quality indication CQI information, side link channel rank indication RI information and side link channel precoding matrix indication PMI information.

7. A user equipment, the user equipment comprising:

the acquisition module is used for acquiring PSSCCH resources of a second control channel of the physical side link;

the acquisition module is specifically configured to:

receiving SCI (service identity code channel) sent by second UE (user equipment) on a PSCCH (physical side link control channel) resource, and acquiring a PSSCCH resource corresponding to the PSCCH resource according to a predefined PSCCH resource and PSSCCH resource index relation;

the acquisition module is specifically configured to:

determining an RB index number of an RB where the PSSCCH resource is located or a relative RB index number in a PSSCCH resource pool, wherein the RB index number corresponds to a channel index number of the PSCCH resource; or,

and determining the channel index number of the PSSCCH resource corresponding to the channel index number of the PSCCH resource according to the index relationship between the PSCCH resource and the PSSCCH resource, and determining the RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.

8. A user equipment, the user equipment comprising:

wherein the obtaining module is specifically configured to:

receiving data information sent by second UE on PSSCH resources of physical side link shared channels, and acquiring the PSSCCH resources corresponding to the PSSCH resources according to a predefined PSSCH resource and PSSCCH resource index relation;

the acquisition module is specifically configured to:

determining an RB index number of an RB where the PSSCCH resource is located or a relative RB index number in a PSSCCH resource pool, wherein the RB index number corresponds to a channel index number of the PSSCH resource; or,

and acquiring a channel index number of the PSSCCH resource corresponding to the channel index number of the PSSCH resource according to the PSSCH resource-PSSCCH resource index relationship, and determining the RB where the PSSCCH resource is located according to the channel index number of the PSSCCH resource.