WO2014000514A1 - A method for d2d (device to device) communication, user equipment and base station - Google Patents

Abstract

The embodiments in the present invention provide a method for D2D (Device to Device) communication, user equipment and base station. The method comprises that a first UE (User Equipment) receives from the base station occupying information of frequency spectrum indicating the uplink frequency spectrum resource occupied by at least one area, and the at least one area is obtained by partitioning cells covered by the base station; the first UE selects a first uplink frequency spectrum resource from the uplink frequency spectrum resource set that can be used for D2D communication, and communicates with a second UE using the first uplink frequency spectrum resource, wherein the uplink frequency spectrum resource is determined according to occupying information of frequency spectrum by the first UE. In the embodiments of the present invention, the first UE can communicate with the second UE using the first uplink frequency spectrum resource selected from the uplink frequency spectrum resource set that can be used in D2D communication by the first UE according to the occupying information of frequency spectrum, thus it can realize D2D communication by utilizing the uplink frequency spectrum of the present network, and improve the utilization of the uplink frequency spectrum.

Description

 Inter-device communication method, user equipment and base station

 The present invention relates to the field of communications, and in particular, to an inter-device communication method, a user equipment, and a base station. Background technique

 With the rapid development of wireless communication, the generation of ultra-high-speed services (such as high-definition video) has caused the load on wireless communication networks to become heavier.

 In order to reduce the load on wireless communication networks, research on Device to Device (D2D) communication modes has received increasing attention. In the D2D communication mode, the terminal and the terminal can communicate directly without going through the base station, so the load of the base station can be alleviated. However, how to use spectrum resources for D2D communication becomes a problem to be considered. Summary of the invention

 The embodiments of the present invention provide an inter-device communication method, a user equipment, and a base station, which can effectively utilize the uplink spectrum resources of the existing network to implement D2D communication, and can improve the utilization of uplink spectrum resources.

 In one aspect, an inter-device communication method is provided, including: receiving, by a first user equipment, a spectrum occupancy information, where the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is Decoding the cell covered by the base station; the first UE selects the first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for D2D communication between devices, and uses the first uplink spectrum resource and the second The UE performs D2D communication, where the uplink spectrum resource set is determined by the first UE according to the spectrum occupancy information.

 In another aspect, an inter-device communication method is provided, including: determining spectrum occupancy information, where the spectrum occupation information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is to divide a cell covered by the base station. Obtaining the spectrum occupancy information to the first user equipment UE, so that the first UE selects the first uplink spectrum resource from the uplink spectrum resource set that the first UE can use for inter-device D2D communication, and uses the first The uplink spectrum resource is in D2D communication with the second UE, where the uplink spectrum resource set is determined by the first UE according to the spectrum occupancy information.

In another aspect, a user equipment is provided, including: a receiving unit, configured to receive a frequency from a base station Spectrum occupancy information, the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is obtained by dividing a cell covered by the base station; and a communication unit, configured to be available from the first UE And selecting, by the first uplink spectrum resource, the first uplink spectrum resource, and using the first uplink spectrum resource to perform D2D communication with the second UE, where the uplink spectrum resource set is the first UE according to the spectrum occupation information. definite.

 In another aspect, a base station is provided, including: a determining unit, configured to determine spectrum occupancy information, where the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is a cell covered by the base station And the sending unit is configured to send the spectrum occupation information to the first user equipment UE, so that the first UE selects the first uplink spectrum from the uplink spectrum resource set that the first UE can use for inter-device D2D communication. The resource is used to perform D2D communication with the second UE by using the first uplink spectrum resource, where the uplink spectrum resource set is determined by the first UE according to the spectrum occupancy information.

 In the embodiment of the present invention, the spectrum occupancy information indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be determined according to the spectrum occupation information. The first UE can select the first uplink spectrum resource and perform D2D communication with the second UE in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the uplink spectrum resource can be improved. Utilization. DRAWINGS

 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

 1 is a schematic diagram of an example of a scenario in which an embodiment of the present invention is applicable.

 2 is a schematic flow chart of a D2D communication method according to an embodiment of the present invention.

 FIG. 3 is a schematic flowchart of a D2D communication method according to an embodiment of the present invention.

 4 is a schematic flow chart of a process of a D2D communication method according to an embodiment of the present invention. FIG. 5 is a diagram showing an example of a partitioning partition applicable to the scene of FIG. 1 according to an embodiment of the present invention.

6 is an uplink spectrum resource applicable to the scenarios of FIGS. 1 and 5 according to an embodiment of the present invention. A schematic diagram of an example of assignment.

 Figure 7 is a diagram showing an example of a format of spectrum occupancy information applicable to the example of Figure 6 according to an embodiment of the present invention.

 FIG. 8 is a diagram showing another example of a format of spectrum occupation information applicable to the example of FIG. 6 according to an embodiment of the present invention.

 9 is a diagram showing another example of a format of spectrum occupation information applicable to the example of FIG. 6 according to an embodiment of the present invention.

 FIG. 10 is a diagram showing an example of uplink spectrum resource partitioning applicable to the scenario of FIG. 5 according to an embodiment of the present invention.

 11 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

 Figure 12 is a schematic block diagram of a base station in accordance with an embodiment of the present invention. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

 The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access ( Wideband Code Division Multiple Access Wireless (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.

 In the embodiment of the present invention, a user equipment (User Equipment, UE), which may also be called a mobile terminal (MT), a mobile user equipment, etc., may be connected to a radio access network (for example, Radio Access Network, RAN). The one or more core networks communicate, and the user equipment can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be portable, pocket, handheld, built-in computer Or a mobile device on the car.

In the embodiment of the present invention, the base station may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station ( evolved Node B, eNB) in LTE. Or e-NodeB), the invention is not limited. 1 is a schematic diagram of an example of a scenario in which an embodiment of the present invention is applicable. It should be noted that the example of FIG. 1 is intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.

 In Fig. 1, it is assumed that base station 110 covers three sectors 130a, 130b, and 130c on a certain carrier. The base station 110 serves 8 UEs, and 8 UEs are respectively located in 3 sectors. For example, UE 120a, UE 120b and UE 120c are located in sector 130a. UE 120d and UE 120e are located in sector 130b. UE 120f, UE 120g, and UE 120h are located in sector 130c.

 Among the 8 UEs, D2D communication can be performed between D2D-capable UEs. For example, if the UE 120a, the UE 120b, and the UE 120c both have D2D communication capability, the UE 120a and the UE 120b may perform D2D communication, the UE 120a may also perform D2D communication with the UE 120c, and the UE 120b may also perform D2D communication with the UE 120c. In this way, the UEs with D2D communication capability can perform data transmission through D2D communication without forwarding through the base station.

 It should be noted that, for convenience of description, only three sectors of a base station on a certain carrier are described in FIG. 1, but the embodiment of the present invention is not limited thereto, and the base station may also have sectors on other carriers. In addition, the number of UEs served by the base station may also be less or more, which is not limited in this embodiment of the present invention.

 2 is a schematic flow chart of a D2D communication method according to an embodiment of the present invention. The method of Figure 2 is performed by the UE.

 210. The first UE receives the spectrum occupation information from the base station, where the spectrum occupation information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is obtained by dividing the area covered by the base station.

 The first UE selects the first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for D2D communication, and performs D2D communication with the second UE by using the first uplink spectrum resource, where the uplink spectrum resource set is the first The UE is determined according to the spectrum occupancy information.

 The first UE and the second UE may use the uplink spectrum resource for D2D communication. Since the uplink spectrum resource is used for uplink communication from the UE to the base station, and the base station has better anti-interference capability than the UE, the uplink spectrum resource is used for D2D communication. Reduce interference with communications between UEs and base stations in existing networks.

In the embodiment of the present invention, the spectrum occupancy information indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be determined according to the spectrum occupation information. The first UE can be used for uplink frequency of D2D communication The first uplink spectrum resource is selected in the spectrum resource set to perform D2D communication with the second UE, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the utilization of the uplink spectrum resource can be improved.

 Optionally, as an embodiment, in step 210, the spectrum occupancy information may be used to indicate the uplink spectrum resource occupied by all the partitions, or the spectrum occupancy information may be used to indicate the uplink spectrum resource occupied by the partition where the first UE is located. And the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupancy information may be used to indicate the uplink occupied by the partition other than the partition where the first UE is located and/or the partition where the second UE is located in all the partitions. Spectrum resources.

 Specifically, the base station may divide the cell covered by the base station on one carrier into multiple partitions. Then, the spectrum occupancy information received by the first UE from the base station may indicate the uplink spectrum resources occupied by all the partitions. Alternatively, the spectrum occupancy information may indicate the uplink spectrum resource occupied by the partition where the first UE is located, and may also indicate the uplink spectrum resource occupied by the partition where the first UE is located and the uplink spectrum resource occupied by the partition where the second UE is located, and may also indicate The uplink spectrum resource occupied by the partition where the UE is located. Alternatively, the spectrum occupancy information may indicate uplink spectrum resources occupied by other partitions other than the first UE where the first UE is located, and may also indicate other partitions except the first UE where the partition is located and the second UE. The uplink spectrum resources occupied by the partition may also indicate uplink spectrum resources occupied by other partitions except the partition where the second UE is located in all the partitions.

 Optionally, in another embodiment, in step 220, the uplink spectrum resource set may include uplink spectrum resources occupied by the partitions other than the partition where the first UE is located and/or the partition where the second UE is located.

 Optionally, as another embodiment, in step 220, the first UE may select, from the uplink spectrum resource set, an uplink that is not adjacent to the partition where the first UE is located and is not adjacent to the partition where the second UE is located. The spectrum resource serves as the first uplink spectrum resource. By excluding the uplink spectrum resources of the partition adjacent to the partition where the first UE is located and adjacent to the partition where the second UE is located, interference to other UEs and interference from other UEs can be minimized.

Optionally, as another embodiment, in step 210, the first UE may receive downlink control information (DCI) from the base station by using a Physical Downlink Control Channel (PDCCH), where the DCI includes a spectrum. Occupy information. Or the first UE may receive the DCI from the base station by using the PDCCH, where the DCI is used to indicate the time-frequency resource location occupied by the spectrum occupation information on the Physical Downlink Shared Channel (PDSCH), and receive from the base station according to the DCI through the PDSCH. Spectrum occupancy information. Alternatively, the first UE may receive spectrum occupation information from the base station by using a Physical Multicast Channel (PMCH). Alternatively, the first UE may receive spectrum occupation information from the base station through a Physical Broadcast Channel (PBCH).

 Optionally, as another embodiment, a 16-bit Cyclic Redundancy Check (CRC) may be added to the end of the DCI, and the CRC may be a radio network Temporary Identifier (RNTI) common to a group of UEs. In particular, the group of UEs includes the first UE. That is, the DCI including the spectrum occupancy information received by the first UE through the PDCCH may be for a group of UEs including the first UE. Alternatively, the DCI received by the first UE through the PDCCH for indicating the time-frequency resource location occupied by the spectrum occupation information on the PDSCH may be for a group of UEs including the first UE.

 Optionally, as another embodiment, in step 210, the first UE may receive, from the base station, a spectrum occupation sent by the base station in any one of the Nth subframe to the (N+k-1)th subframe. The information, the spectrum occupancy information may be used to indicate an uplink spectrum resource occupied by at least one partition in the (N+k)th subframe, where N and k are positive integers. Generally, the base station has completed the uplink spectrum resource allocation of the (N+k)th subframe in the Nth subframe, and therefore, the base station may be in any one of the Nth subframe to the (N+k-1)th subframe. The spectrum occupancy information is sent. For the Frequency Division Duplexing (FDD) system, k can be 4. For Time Division Duplexing (TDD), k can be 4, 5, 6, or 7.

 Optionally, in another embodiment, after the step 220, after the first UE receives a Negative Acknowledge (NACK) message from the second UE, the first UE may select the first set of uplink spectrum resources. And performing uplink D2D communication with the second UE by using the second uplink spectrum resource. For example, if other UEs performing D2D communication also select the first uplink spectrum resource, the D2D communication between the first UE and the second UE may collide, causing the D2D communication between the first UE and the second UE to fail. . In this way, a Hybrid Automatic Repeat reQuest (HARQ) mechanism can be used. After the first UE receives the NACK message from the second UE, the first UE may reselect the second uplink spectrum resource and perform data retransmission with the second UE through D2D communication, thereby solving the problem of resource conflict.

Optionally, as another embodiment, in step 220, the first UE may select the first uplink spectrum resource from a subset of the uplink spectrum resource set. For example, the uplink spectrum resource set may include multiple subsets, so that the UE performing D2D communication may select uplink spectrum resources from different subsets, and the resource selection conflict between the UEs performing D2D communication can be avoided. Optionally, as another embodiment, in step 220, the first UE may generate a random number, and select a first uplink spectrum resource from the uplink spectrum resource set according to the random number. This makes the first

The UE randomizes the selection of the first uplink spectrum resource, and can avoid conflicts with resource selection between other UEs performing D2D communication.

 Optionally, as another embodiment, in the foregoing spectrum occupation information, each m bits corresponds to one allocation unit, and the m ratio 4 is used for an area that is “^^^^^^^” All allocation units corresponding to the JL step page occupancy information are arranged in order, where m is a positive integer. Or, in the foregoing spectrum occupation information, each X-bit corresponds to one partition, and X bits are used to indicate at least one allocation unit occupied by the partition corresponding to the X-bit, and all the partitions corresponding to the spectrum occupation information are arranged in order. Where X is a positive integer. Or, in the foregoing spectrum occupation information, each bit corresponds to an allocation unit, where the bit is used to indicate whether the allocation unit corresponding to the bit is occupied by the partition where the first UE is located and/or the partition where the second UE is located, and the spectrum occupation information is occupied. All corresponding allocation units are arranged in order. The foregoing allocation unit may include a plurality of consecutive Resource Block Groups (RBGs).

 In the embodiment of the present invention, the spectrum occupancy information indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be determined according to the spectrum occupation information. The first UE can select the first uplink spectrum resource and perform D2D communication with the second UE in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the uplink spectrum resource can be improved. Utilization.

 FIG. 3 is a schematic flowchart of a D2D communication method according to an embodiment of the present invention. The method of Figure 3 is performed by the base station.

 310. Determine spectrum occupation information, where the spectrum occupation information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is obtained by dividing a cell covered by the base station.

 320. Send spectrum occupation information to the first UE, so that the first UE selects the first uplink spectrum resource from the uplink spectrum resource set that the first UE can use for D2D communication, and performs D2D with the second UE by using the first uplink spectrum resource. Communication, wherein the set of uplink spectrum resources is determined by the first UE according to spectrum occupancy information.

In the embodiment of the present invention, the spectrum occupancy information determined by the base station indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is used to divide the cell covered by the base station. The first UE is configured to select the first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for D2D communication according to the spectrum occupancy information to perform D2D communication with the second UE, thereby effectively utilizing existing The uplink spectrum resources of the network implement D2D communication and can improve the utilization of uplink spectrum resources.

 Optionally, as an embodiment, in step 310, the spectrum occupation information may be used to indicate an uplink spectrum resource occupied by all the partitions, or the spectrum occupation information may be used to indicate an uplink spectrum resource occupied by a partition where the first UE is located. And the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupancy information may be used to indicate the uplink occupied by the partition other than the partition where the first UE is located and/or the partition where the second UE is located in all the partitions. Spectrum resources.

 Specifically, the base station may divide the cell covered by the base station on one carrier into multiple partitions. Then, the spectrum occupancy information received by the first UE from the base station may indicate the uplink spectrum resources occupied by all the partitions. Alternatively, the spectrum occupancy information may indicate the uplink spectrum resource occupied by the partition where the first UE is located, and may also indicate the uplink spectrum resource occupied by the partition where the first UE is located and the uplink spectrum resource occupied by the partition where the second UE is located, and may also indicate The uplink spectrum resource occupied by the partition where the UE is located. Alternatively, the spectrum occupancy information may indicate uplink spectrum resources occupied by other partitions other than the first UE where the first UE is located, and may also indicate other partitions except the first UE where the partition is located and the second UE. The uplink spectrum resources occupied by the partition may also indicate uplink spectrum resources occupied by other partitions except the partition where the second UE is located in all the partitions.

 Optionally, as another embodiment, in step 320, the uplink spectrum resource set may include uplink spectrum resources occupied by the partitions of the entire partition except the partition where the first UE is located and/or the partition where the second UE is located.

 Optionally, as another embodiment, in step 320, the base station may send a DCI to the first UE by using a PDCCH, where the DCI includes spectrum occupation information. Alternatively, the base station may send a DCI to the first UE by using the PDCCH, where the DCI is used to indicate the time-frequency resource location occupied by the spectrum occupation information on the PDSCH, and send the spectrum occupation information to the first UE through the PDSCH. Alternatively, the base station may send spectrum occupation information to a group of UEs including the first UE through the PMCH. Alternatively, the base station may send spectrum occupation information to a group of UEs including the first UE through the PBCH.

Optionally, as another embodiment, a 16-bit CRC may be added to the end of the DCI, where the CRC is scrambled by a group of UE common RNTIs, and the group of UEs includes the first UE. That is, the base station may transmit the DCI including the spectrum occupancy information to the group of UEs including the first UE through the PDCCH. Alternatively, the base station may send, by using a PDCCH, a group of UEs including the first UE for indication. The DCI of the time-frequency resource location occupied by the spectrum occupancy information on the PDSCH.

 Optionally, in another embodiment, in step 320, the base station may send spectrum occupation information, the spectrum, to the first UE in any one of the Nth subframe to the (N+k-1) subframe. The occupancy information is used to indicate an uplink spectrum resource occupied by at least one partition in the (N+k)th subframe, where N and k are positive integers. Generally, the base station has completed the uplink spectrum resource allocation of the (N+k)th subframe in the Nth subframe, and therefore, the base station may be in any one of the Nth subframe to the (N+k-1)th subframe. The spectrum occupancy information is sent. For the FDD system, k can be 4. For the TDD system, k can be 4, 5, 6, or 7.

 Optionally, as another embodiment, in step 320, the base station may send spectrum occupation information to a group of UEs including the first UE, where the group of UEs may be all UEs in the partition where the first UE is located, or one The group UE may be all UEs in multiple neighboring partitions including the partition where the first UE is located, or a group of UEs may be all UEs in all partitions, or a group of UEs may have D2D in the partition where the first UE is located. A UE capable of, or a group of UEs may be a D2D-capable UE in a plurality of neighboring partitions including a partition in which the first UE is located, or a group of UEs may be all partitioned D2D-capable UEs, or a group of UEs may All UEs within the angle in which the first UE is aligned for the beam, or a group of UEs may be D2D capable UEs within the angle of the first UE to which the beam is aligned.

 Specifically, the base station may send spectrum occupation information to all UEs in the partition where the first UE is located, or may send spectrum occupation information to all UEs in multiple neighboring partitions including the partition where the first UE is located, or may be in all partitions. All UEs transmit spectrum occupancy information. The base station may also send the spectrum occupation information to the D2D-capable UE in the multiple adjacent partitions of the partition where the first UE is located, or may also send the spectrum occupation information to the D2D-capable UE in the multiple adjacent partitions of the first UE. Spectrum occupancy information is sent to D2D capable UEs in all partitions. This embodiment of the present invention does not limit this. In addition, if the base station supports a directional function such as a smart antenna array or 3D (3D) waveform shaping (BF), the base station may send spectrum occupation information to all UEs within the angle of the first UE in which the beam is aligned, or The spectrum occupancy information is transmitted to the UE having the D2D communication capability within the angle of the beam-aligned first UE.

 Optionally, as another embodiment, before step 310, the base station may divide the cell covered by the base station into multiple partitions.

Optionally, as another embodiment, before step 310, the base station may divide the cell covered by the base station into multiple sector partitions according to the radiation angle of the antenna of the base station. Or, the base station can press The cell covered by the base station is divided into a plurality of ring segments according to the coverage of the base station. Optionally, as another embodiment, the base station may divide the cells covered by the base station into multiple partitions. For example, the base station can evenly divide the cell covered by the base station into a plurality of sector partitions according to the radiation angle of the antenna of the base station. The base station may evenly divide the cell covered by the base station into multiple ring segments according to the coverage of the base station.

 Optionally, as another embodiment, in the foregoing spectrum occupation information, each m bits corresponds to one allocation unit, and the m ratio 4 is used for an area that is “^^^^^^^” All allocation units corresponding to the JL step page occupancy information are arranged in order, and m is a positive integer. Or, in the foregoing spectrum occupation information, each X bit corresponds to one partition, and X bits are used to indicate at least one allocation unit occupied by the X bit corresponding partition, and all partitions corresponding to the spectrum occupation information are arranged in order, where X Is a positive integer. Or, in the foregoing spectrum occupation information, each bit corresponds to an allocation unit, where the bit is used to indicate whether an allocation unit corresponding to the bit is occupied by a partition where the first UE is located and/or a partition where the second UE is located, and spectrum occupation information All corresponding allocation units are arranged in order. The foregoing allocation unit includes a plurality of consecutive RBGs.

 In the embodiment of the present invention, the spectrum occupancy information determined by the base station indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be occupied according to the spectrum. The first UE that is determined by the information can select the first uplink spectrum resource and the second UE to perform D2D communication in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the D2D communication can be improved. Utilization of uplink spectrum resources.

 Embodiments of the present invention will be described in detail below with reference to specific examples. It should be noted that the examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.

 4 is a schematic flow chart of a process of a D2D communication method according to an embodiment of the present invention. Figure 4 will be described in detail below in conjunction with the scenario of Figure 1.

 In FIG. 4, it is assumed that the first UE is the UE 120a and the second UE is the UE 120b. The base station can be the base station 110 of FIG.

 401. The base station 110 divides the cell covered by the base station 110 into multiple partitions.

 The division of the plurality of partitions by base station 110 may be a geographical division.

Optionally, the base station 110 may divide the cell covered by the base station into multiple sector partitions according to the radiation angle of the antenna of the base station 110. For example, the base station 110 can use the cell covered by the base station 110. It is evenly or unevenly divided into a plurality of sector partitions.

 Optionally, the base station 110 may divide the cell covered by the base station into multiple ring partitions according to the coverage of the base station 110. For example, base station 110 can evenly or non-uniformly divide a cell covered by base station 110 into a plurality of ring segments.

 After the base station 110 divides the plurality of partitions, each UE served by the base station 110 can have a partition identifier. For a UE located at the boundary of two partition edges, it is possible to have two partition identifiers, so that it is not required to require the base station to locate the UE too accurately.

 FIG. 5 is a diagram showing an example of a partitioning partition applicable to the scene of FIG. 1 according to an embodiment of the present invention. In Fig. 5, the same or similar portions as those of Fig. 1 follow the same reference numerals in Fig. 1. In FIG. 5, the base station 110 may divide the cell covered by the base station 110 on a certain carrier into six sector-shaped partitions according to the radiation angle of the antenna of the base station 110. The base station 110 serves 8 UEs, and 3 UEs are located in the first partition, that is, the UE 120a, the UE 120b, and the UE 120c. The UE 120d is located in the third partition, the UE 120e is located in the fourth partition, and the UE 120f, the UE 120g, and the UE 120h are located in the fifth partition. There are no UEs in the 2nd and 6th partitions. It should be noted that the example of FIG. 5 is intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention. For example, the base station may further divide the cell covered by the base station into multiple partitions according to other manners, which is not limited in this embodiment of the present invention.

 402. The base station 110 determines spectrum occupation information, where the spectrum occupation information is used to indicate an uplink spectrum resource occupied by at least one partition.

 Generally, the base station 110 has completed the uplink spectrum resource allocation of the (N+k)th subframe in the Nth subframe, and the uplink spectrum resource allocation in each subframe is different, then the spectrum occupancy information determined by the base station is used to indicate the first ( N+k) Upstream spectrum resources occupied by at least one partition in the subframe. Where N and k are positive integers. For the FDD system, k can be 4. For the TDD system, k can be 4, 5, 6, or 7.

6 is a schematic diagram of an example of uplink spectrum resource allocation applicable to the scenarios of FIGS. 1 and 5, in accordance with an embodiment of the present invention. It is assumed that in the (N+k)th subframe, the base station 110 schedules 6 UEs, that is, the UE 120c of the first partition, the UE 120d of the third partition, and the UE 120e of the fourth partition, and the UE 120f of the fifth partition, UE 120g and UE 120h. As shown in FIG. 6, the base station 110 allocates 2 clusters to both the UE 120e and the UE 120f. The base station 110 allocates one cluster to each of the UE 120c, the UE 120d, the UE 120g, and the UE 120h. Each cluster may include one or more consecutive allocation units. Each allocation unit may include a plurality of consecutive RBGs. In Figure 6, it is assumed that each allocation unit can include P RBG. An example of the value of P is shown in Table 1.

 Table 1 Number of RBGs in allocation units under different bandwidths P

可选地， 频谱占用信息可以用于指示全部分区所占用的上行频谱资源， 或者频谱占用信息可以用于指示第一 UE所在分区所占用的上行频谱资源和 /或第二 UE所在分区所占用的上行频谱资源，或者所述频谱占用信息可以用 于指示全部分区中除第一 UE所在分区和 /或第二 UE所在分区之外的其它分 区所占用的上行频谱资源。

Optionally, the spectrum occupancy information may be used to indicate the uplink spectrum resource occupied by all the partitions, or the spectrum occupancy information may be used to indicate the uplink spectrum resource occupied by the partition where the first UE is located and/or the area occupied by the second UE. The uplink spectrum resource, or the spectrum occupancy information, may be used to indicate an uplink spectrum resource occupied by a partition other than the partition where the first UE is located and/or the partition where the second UE is located in all the partitions.

 Optionally, in the frequency occupancy information, each m-bit may correspond to an allocation unit, where the m-bit may be used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and all allocation units corresponding to the spectrum occupancy information are in order. Arranged, m is a positive integer.

 Optionally, in the spectrum occupation information, each X bit may correspond to one partition, and X bits may be used to indicate at least one allocation unit occupied by a partition corresponding to the X bit, and all partitions corresponding to the spectrum occupation information are sequentially arranged. , where X is a positive integer.

 Optionally, in the spectrum occupation information, each bit corresponds to an allocation unit, and the bit may be used to indicate whether an allocation unit corresponding to the bit is occupied by a partition where the first UE is located and/or a partition where the second UE is located, and the spectrum is All allocation units corresponding to the occupation information are arranged in order. In this case, the spectrum occupancy information can be reduced to a Boolean number.

 The format of the spectrum occupation information of the embodiment of the present invention will be described in detail below with reference to specific examples. It should be noted that the following examples of Figures 7 through 9 are intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.

FIG. 7 is a diagram showing an example of a format of spectrum occupancy information applicable to the example of FIG. 6 according to an embodiment of the present invention. As shown in FIG. 7, in the spectrum occupancy information, every 3 bits corresponds to one allocation unit, and these allocation units are identical to the order of the allocation unit in FIG. 6. For example, in FIG. 7, the first 3 bits "101" may indicate that the first allocation unit belongs to the fifth partition; the second three bits "011" may indicate that the second allocation unit belongs to the third partition; 3 bits "100" It can be said that the third allocation unit belongs to the fourth partition. And so on.

 FIG. 8 is a diagram showing another example of a format of spectrum occupation information applicable to the example of FIG. 6 according to an embodiment of the present invention.

 As shown in Figure 8, in the spectrum occupancy information, each 6 bits corresponds to one partition. The six partitions corresponding to the spectrum information are arranged in order, that is, in the order of the partitions in Fig. 5. The allocation unit occupied by the corresponding partition every 6 bits can be obtained through a predefined list or a predefined calculation manner. For example, in FIG. 8, it can be known through a predefined list that the first 6 bits "000110" can indicate that the allocation unit occupied by the first partition is the fourth last allocation unit; the second 6 bits "000000" It can be said that the second partition does not occupy the allocation unit; the third 6-bit "000011" can indicate that the allocation unit occupied by the third partition is the second allocation unit. And so on. It should be noted that the above numerical values are only for the purpose of facilitating a better understanding of the embodiments of the present invention, and not limiting the scope of the embodiments of the present invention.

 9 is a diagram showing another example of a format of spectrum occupation information applicable to the example of FIG. 6 according to an embodiment of the present invention. As shown in Fig. 9, in the spectrum occupancy information, each bit corresponds to one allocation unit. The order of all allocation units corresponding to all bits is identical to the order of the allocation units in Fig. 6. Assuming that the bit is "0", it indicates that the allocation unit corresponding to the bit is not occupied by the first partition where the UE 120a and the UE 120b are located. When the bit is "1", it means that the allocation unit corresponding to the bit is occupied by the first partition.

 403. The base station 110 sends the spectrum occupation information determined in step 402 to the UE 120a.

 Optionally, the base station 110 may send spectrum occupation information to a group of UEs, where the group of UEs includes at least the UE 120a, or the group of UEs includes at least all UEs in the partition where the UE 120a is located.

 The base station 110 may send spectrum occupation information to a group of UEs including the first UE, where a group of UEs may be all UEs in the first partition where the UE 120a is located, or a group of UEs may be multiple phases including the first partition. All UEs in the neighboring partition, or a group of UEs may be all UEs in all partitions, or a group of UEs may be D2D-capable UEs in the first partition, or a group of UEs may be multiple phases including the first partition. A D2D-capable UE in the neighboring cell, or a group of UEs may be all partitioned D2D-capable UEs, or a group of UEs may be all UEs within the angle of the beam-aligned UE 120a, or a group of UEs may A D2D capable UE within the angle at which the beam aligned UE 120a is located.

Specifically, the base station 110 may send spectrum occupation information to all UEs in the first partition, or may send spectrum occupation information to all UEs in multiple neighboring partitions including the first partition, or may All UEs in all partitions transmit spectrum occupancy information. The base station 110 may also send the spectrum occupation information to the D2D-capable UE of the first partition, or may send the spectrum occupation information to the D2D-capable UE of the multiple neighbors including the first partition, or may have the spectrum occupation information to all the partitions. The D2D capable UE transmits spectrum occupancy information. This embodiment of the present invention does not limit this. If the base station 110 supports a directional function such as a smart antenna array or a 3D BF, the base station 110 may transmit spectrum occupancy information to all UEs at the angle of the beam-aligned UE 120a or UEs having D2D communication capabilities.

 Optionally, the base station 110 may send, in any one of the Nth subframe to the (N+k-1)th subframe, the UE 120a, to indicate at least one partition in the (N+k)th subframe. Spectrum occupancy information of occupied uplink spectrum resources, where N and k are positive integers.

 Optionally, the base station 110 may send a DCI to the UE 120a through the PDCCH, where the DCI includes spectrum occupation information. For example, the DCI can be similar to the DCI format 3/3A. A 16-bit CRC can be appended to the end of the DCI, which is scrambled by a group of UE-wide RNTIs including UE 120a.

 Optionally, the base station 110 may send, by using a PDCCH, a DCI to the UE 120a, where the DCI is used to indicate a time-frequency resource location occupied by the spectrum occupation information on the PDSCH, and send spectrum occupation information to the first UE through the PDSCH. For example, the DCI may also indicate related information such as a Modulation and Coding Scheme (MCS) of spectrum occupancy information. The 16-bit CRC may be appended to the end of the DCI, and the CRC is heavily punctured by the RNTI common to a group of UEs including the UE 120a.

 Alternatively, the base station 110 may transmit spectrum occupancy information to a group of UEs including the UE 120a through the PMCH.

 Optionally, the base station 110 may send spectrum occupation information to a group of UEs including the UE 120a through the PBCH.

 404. The UE 120a determines, according to the spectrum occupancy information in step 403, a set of uplink spectrum resources that the UE 120a can use for D2D communication.

 Optionally, the UE 120a may determine an uplink spectrum resource set according to the spectrum occupancy information, where the uplink spectrum resource set may include uplink spectrum resources occupied by the partitions other than the partition where the UE 120a is located and/or the partition where the UE 120b is located. .

 In FIG. 4, UE 120a and UE 120b are both in the first partition, and then the uplink spectrum resource set may include uplink spectrum resources occupied by the second to sixth partitions.

405. The UE 120a selects a first uplink spectrum resource from the uplink spectrum resource set. Optionally, the UE 120a may select the first uplink spectrum resource from the uplink spectrum resources occupied by the second to sixth partitions.

 Optionally, the UE 120a may select the first uplink spectrum resource from the uplink spectrum resources occupied by the third to fifth partitions. Thus, by excluding the uplink spectrum resources adjacent to the partition of the first partition, interference with other UEs can be avoided to the utmost extent.

 In addition, if the UE 120a and the UE 120b are respectively in different partitions, for example, the UE 120b is located in the second partition, the UE 120a may select the first uplink spectrum resource from the uplink spectrum resources occupied by the third to sixth partitions. Further, the UE 120a may select the first uplink spectrum resource from the uplink spectrum resources occupied by the fourth partition and the fifth partition. Thus, by excluding the uplink spectrum resources of the partitions adjacent to the first partition and the second partition, interference with other UEs can be avoided to the utmost extent.

 Alternatively, UE 120a may select a first uplink spectrum resource from a subset of the set of uplink spectrum resources. The set of uplink spectrum resources may include multiple subsets. The UE 120a may select the first uplink spectrum resource from a certain subset to avoid interference with other UEs that are to perform D2D communication. For example, if UE 120c is to perform D2D communication with UE 120d, uplink spectrum resources may be selected from another subset of the uplink spectrum resource set to avoid collision with the first uplink spectrum resource selected by UE 120a.

 FIG. 10 is a diagram showing an example of uplink spectrum resource partitioning applicable to the scenario of FIG. 5 according to an embodiment of the present invention. In Figure 10, the uplink spectrum resources of the first partition may continue to be divided, and may include multiple subsets. For example, UE 120a may use the uplink spectrum resources of the third partition depending on the location. In this way, it is possible to minimize the selection of the same uplink spectrum resources from other UEs that are to perform D2D communication.

 Optionally, the UE 120a may generate a random number and select a first uplink spectrum resource from the set of uplink spectrum resources according to the random number. In this way, the selection of the uplink spectrum resources can be randomized, and the same uplink spectrum resources can be avoided from other UEs that are to perform D2D communication, so that collision of uplink spectrum resources can be avoided.

 406. The UE 120a performs D2D communication with the UE 120b by using the first uplink spectrum resource selected in step 405.

 407. If the UE 120a fails to communicate with the UE 120b through D2D, the UE 120b sends a NACK message to the UE 120a.

For example, if the UE 120a and the other UEs that are to perform D2D communication select the first uplink The spectrum resource, resource conflict occurs, and D2D communication between the UE 120a and the UE 120b fails. The UE 120b may send a NACK message to the UE 120a, that is, inform the UE 120a that the data transmission through the D2D communication link has failed.

 408. The UE 120a selects a second uplink spectrum resource from the uplink spectrum resource set.

 409. The UE 120a performs the second uplink spectrum resource selected in step 408 with the UE 120b.

D2D communication.

 The UE 120a may use the second uplink spectrum resource to perform data retransmission to the UE 120b over the D2D communication link.

 It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present invention.

 In the embodiment of the present invention, the spectrum occupation information indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first

The UE can select the first uplink spectrum resource and perform D2D communication with the second UE from the uplink spectrum resource set that the first UE can use for the D2D communication determined according to the spectrum occupation information, so that the uplink spectrum resource of the existing network can be effectively utilized. Realize D2D communication and improve the utilization of uplink spectrum resources.

 11 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 1100 of FIG. 11 includes a receiving unit 1110 and a communication unit 1120.

 The receiving unit 1110 receives the spectrum occupation information from the base station, where the spectrum occupancy information is used to indicate the uplink spectrum resource occupied by the at least one partition, and at least one partition is obtained by dividing the cell covered by the base station. The communication unit 1120 selects a first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for D2D communication, and performs D2D communication with the second UE by using the first uplink spectrum resource, where the uplink spectrum resource set is the first UE according to the The spectrum occupancy information is determined.

 In the embodiment of the present invention, the spectrum occupancy information indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be determined according to the spectrum occupation information. The first UE can select the first uplink spectrum resource and perform D2D communication with the second UE in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the uplink spectrum resource can be improved. Utilization.

For other functions and operations of the user equipment 1100, reference may be made to the above FIG. 2 and FIG. 4 to FIG. The process of the UE involved in the method embodiment is not repeated here.

 Optionally, as an embodiment, the spectrum occupation information may be used to indicate the uplink spectrum resource occupied by all the partitions, or the spectrum occupation information may be used to indicate the uplink spectrum resource occupied by the partition where the first UE is located and/or the partition where the second UE is located. The occupied uplink spectrum resources, or the spectrum occupancy information, may be used to indicate uplink spectrum resources occupied by the partitions other than the partition where the first UE is located and/or the partition where the second UE is located in all the partitions.

 Optionally, as another embodiment, the uplink spectrum resource set may include uplink spectrum resources occupied by the partitions of the entire partition except the partition where the first UE is located and/or the partition where the second UE is located.

 Optionally, as another embodiment, the communication unit 1120 may select, as the first, an uplink spectrum resource that is not adjacent to the partition where the first UE is located and is not adjacent to the partition where the second UE is located, from the uplink spectrum resource set. Upstream spectrum resources.

 Optionally, in another embodiment, in the foregoing spectrum occupation information, each m-bit may correspond to one allocation unit, and m bits may be used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and all allocation units corresponding to the spectrum occupation information The data is arranged in a sequence, where m is a positive integer; or, in the spectrum occupancy information, each X bit may correspond to one partition, and X bits may be used to indicate at least one allocation unit occupied by the X bit corresponding partition, and the spectrum is occupied. All the partitions corresponding to the information are arranged in order, where X is a positive integer; or, in the above spectrum occupancy information, each bit may correspond to an allocation unit, and the bit may be used to indicate whether the allocation unit corresponding to the bit is used by the first UE. The partitioning unit and/or the partition where the second UE is located are occupied, and all the allocation units corresponding to the spectrum occupation information are arranged in order; wherein the foregoing allocation unit includes a plurality of consecutive RBGs.

 Optionally, as another embodiment, the receiving unit 1110 may receive the DCI from the base station by using the PDCCH, where the DCI may include spectrum occupation information. Alternatively, the DCI may be received from the base station by using the PDCCH, where the DCI may be used to indicate that the spectrum occupation information is on the PDSCH. And occupying the time-frequency resource location, and receiving the spectrum occupation information from the base station by using the PDSCH according to the DCI; or receiving the spectrum occupation information from the base station by using the PMCH; or receiving the spectrum occupation information from the base station by using the PBCH.

 Optionally, as another embodiment, a 16-bit CRC may be added to the end of the DCI, and the CRC may be scrambled by a common RNTI of a group of UEs, where a group of UEs may include the first UE.

Optionally, as another embodiment, the receiving unit 1110 may receive, from the base station, spectrum occupation information, spectrum occupancy information, sent by the base station in any one of the Nth subframe to the (N+k-1) subframe. For indicating an uplink spectrum resource occupied by at least one partition in the (N+k)th subframe, where N and k is a positive integer.

 Optionally, as another embodiment, the communication unit 1120 may further select a second uplink spectrum resource from the uplink spectrum resource set and use the second uplink spectrum, where the first UE receives the NACK message from the second UE. The resource performs D2D communication with the second UE.

 Optionally, as another embodiment, the communication unit 1120 may select the first uplink spectrum resource from a subset of the uplink spectrum resource set.

 Optionally, as another embodiment, the communication unit 1120 may generate a random number, and select a first uplink spectrum resource from the uplink spectrum resource set according to the random number.

 In the embodiment of the present invention, the spectrum occupancy information indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be determined according to the spectrum occupation information. The first UE can select the first uplink spectrum resource and perform D2D communication with the second UE in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the uplink spectrum resource can be improved. Utilization.

 Figure 12 is a schematic block diagram of a base station in accordance with an embodiment of the present invention. The base station 1200 of FIG. 12 includes a determining unit 1210 and a transmitting unit 1220.

 The determining unit 1210 determines spectrum occupancy information, where the spectrum occupancy information is used to indicate the uplink spectrum resources occupied by the at least one partition, and at least one partition is obtained by dividing the cells covered by the base station. The sending unit 1220 sends the spectrum occupation information to the first UE, so that the first UE selects the first uplink spectrum resource from the uplink spectrum resource set that the first UE can use for D2D communication, and performs the first uplink spectrum resource with the second UE. D2D communication, wherein the uplink spectrum resource set is determined by the first UE according to spectrum occupancy information.

 In the embodiment of the present invention, the spectrum occupancy information determined by the base station indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be occupied according to the spectrum. The first UE that is determined by the information can select the first uplink spectrum resource and the second UE to perform D2D communication in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the D2D communication can be improved. Utilization of uplink spectrum resources.

 For other functions and operations of the base station 1200, reference may be made to the process of the base station in the method embodiments in FIG. 3 to FIG. 10 above. To avoid repetition, details are not described herein again.

Optionally, as an embodiment, the spectrum occupation information may be used to indicate that all the partitions are occupied. The uplink spectrum resource, or the spectrum occupancy information, may be used to indicate the uplink spectrum resource occupied by the partition where the first UE is located and/or the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupancy information may be used to indicate the first partition in all the partitions. Uplink spectrum resources occupied by the partition where the UE is located and/or other partitions other than the partition where the second UE is located.

 Optionally, as another embodiment, the uplink spectrum resource set may include all but the first partition.

Upstream spectrum resources occupied by the partition where the UE is located and/or other partitions where the second UE is located.

 Optionally, as another embodiment, in the foregoing spectrum occupation information, each m-bit may correspond to an allocation unit, where the m-bit may be used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and the spectrum occupancy information corresponds to all The allocation unit is arranged in order, where m is a positive integer; or, in the above spectrum occupancy information, each X bit may correspond to a partition, and the X bit may be used to indicate at least one allocation unit occupied by a partition corresponding to the X bit, And all the partitions corresponding to the spectrum occupancy information are arranged in order, wherein X is a positive integer; or, in the spectrum occupancy information, each bit may correspond to an allocation unit, and the bit may be used to indicate whether the allocation unit corresponding to the bit is The partition where the first UE is located and/or the partition where the second UE is located is occupied, and all the allocation units corresponding to the spectrum occupation information are arranged in order; wherein the foregoing allocation unit may include a plurality of consecutive RBGs.

 Optionally, as another embodiment, the sending unit 1220 may send a DCI to the first UE by using a PDCCH, where the DCI may include spectrum occupation information. Alternatively, the DCI may be sent to the first UE by using a PDCCH, where the DCI may be used to indicate spectrum occupation. The time-frequency resource location occupied by the information on the PDSCH, and the spectrum occupancy information is sent to the first UE by using the PDSCH; or the spectrum occupancy information may be sent to the group of UEs including the first UE by using the PMCH; or may be included by using the PBCH A group of UEs of the first UE transmits spectrum occupancy information.

 Optionally, as another embodiment, a 16-bit CRC may be added to the end of the DCI, where the CRC is scrambled by a group of UE common RNTIs, and the group of UEs includes the first UE.

 Optionally, as another embodiment, the sending unit 1220 may send spectrum occupation information to the first UE in any one of the Nth subframe to the (N+k-1) subframe, where spectrum occupancy information is available. And indicating an uplink spectrum resource occupied by at least one partition in the (N+k)th subframe, where N and k are positive integers.

Optionally, in another embodiment, the sending unit 1220 may send spectrum occupation information to a group of UEs that include the first UE, where the group of UEs is all UEs in the partition where the first UE is located, or A group of UEs are all UEs in multiple neighboring partitions including a partition in which the first UE is located, or a group of UEs are all UEs in all partitions, or a group of UEs are D2D-capable UEs in a partition where the first UE is located, Or a group of UEs is a D2D-capable UE in a plurality of neighboring partitions including a partition in which the first UE is located, or a group of UEs are all partitioned D2D-capable UEs, or a group of UEs is beam-aligned first All UEs within the angle in which the UE is located, or a group of UEs are D2D capable UEs within the angle of the first UE where the beam is aligned.

 Optionally, as another embodiment, the base station 1200 may further include a dividing unit 1230, configured to divide the cell covered by the base station into multiple partitions before determining the spectrum occupation information.

 Optionally, as another embodiment, the dividing unit 1230 may divide the cell covered by the base station into multiple sector partitions according to the radiation angle of the antenna of the base station; or, the cell covered by the base station may be according to the coverage of the base station. Divided into multiple ring partitions.

 Optionally, as another embodiment, the dividing unit 1230 may evenly divide the cell covered by the base station into multiple partitions.

 In the embodiment of the present invention, the spectrum occupancy information determined by the base station indicates the uplink spectrum resource occupied by the at least one partition, and the at least one partition is obtained by dividing the cell covered by the base station, so that the first UE can be occupied according to the spectrum. The first UE that is determined by the information can select the first uplink spectrum resource and the second UE to perform D2D communication in the uplink spectrum resource set of the D2D communication, so that the uplink spectrum resource of the existing network can be effectively utilized to implement D2D communication, and the D2D communication can be improved. Utilization of uplink spectrum resources.

 Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

 It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another The system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

 The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

 The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request  An inter-device communication method, comprising:  The first user equipment receives the spectrum occupation information from the base station, where the spectrum occupancy information is used to indicate the uplink spectrum resource occupied by the at least one partition, where the at least one partition is obtained by dividing the cell covered by the base station;  The first UE selects a first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for inter-device D2D communication, and performs D2D communication with the second UE by using the first uplink spectrum resource, where The set of uplink spectrum resources is determined by the first UE according to the spectrum occupancy information.  The method according to claim 1, wherein the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by all the partitions, or the spectrum occupancy information is used to indicate that the first UE is occupied by a partition. The uplink spectrum resource and/or the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupancy information is used to indicate the partition of the entire partition except the first UE and/or the second Uplink spectrum resources occupied by other partitions other than the partition where the UE is located.  The method according to claim 2, wherein the uplink spectrum resource set includes other partitions of the all partitions except the partition where the first UE is located and/or the partition where the second UE is located. The occupied uplink spectrum resources.  The method according to claim 2 or 3, wherein the first UE selects the first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for D2D communication, including:  The first UE selects, as the first uplink spectrum resource, an uplink spectrum resource that is not adjacent to the partition where the first UE is located and is not adjacent to the partition where the second UE is located, from the uplink spectrum resource set. .  The method according to any one of claims 2 to 4, characterized in that  In the spectrum occupancy information, each m-bit corresponds to an allocation unit, the m-bit is used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and all allocation units corresponding to the spectrum occupancy information are arranged in order Where m is a positive integer; or, In the spectrum occupancy information, each X bit corresponds to a partition, the X bit is used to indicate at least one allocation unit occupied by the partition corresponding to the X bit, and all partitions corresponding to the spectrum occupancy information are in order Arranged, where X is a positive integer; or, In the spectrum occupancy information, each bit corresponds to an allocation unit, and the bit is used to indicate whether an allocation unit corresponding to the bit is occupied by a partition where the first UE is located and/or a partition where the second UE is located. And all the allocation units corresponding to the spectrum occupancy information are arranged in order;  The allocation unit includes a plurality of consecutive resource block groups RBG.  The method according to any one of claims 1 to 5, wherein the receiving, by the first UE, the spectrum occupation information from the base station includes:  The first UE receives downlink control information DCI from the base station by using a physical downlink control channel PDCCH, where the DCI includes the spectrum occupancy information; or  The first UE receives a DCI from the base station by using a PDCCH, where the DCI is used to indicate a time-frequency resource location occupied by the spectrum occupation information on a physical downlink shared channel (PDSCH), and passes the PDSCH according to the DCI. Receiving, by the base station, the spectrum occupancy information; or, the first UE receives the spectrum occupation information from the base station by using a physical multicast channel (PMCH); or  The first UE receives the spectrum occupancy information from the base station through a physical broadcast channel PBCH.  The method according to claim 6, wherein the DCI is appended with a 16-bit cyclic redundancy check CRC, and the CRC is scrambled by a group of UE common radio network temporary identifiers RNTI, the one The group UE includes the first UE.  The method according to any one of claims 1 to 7, wherein the first The UE receives spectrum occupation information from the base station, including:  The first UE receives, from the base station, spectrum occupation information that is sent by the base station in any one of the Nth subframe to the (N+k-1)th subframe, where the spectrum occupancy information is used to indicate An uplink spectrum resource occupied by the at least one partition in the (N+k)th subframe, where N and k are positive integers.  The method according to any one of claims 1 to 8, wherein the method further comprises:  In a case that the first UE receives a negative acknowledgement NACK message from the second UE, the first UE selects a second uplink spectrum resource from the uplink spectrum resource set, and uses the second uplink spectrum. The resource performs D2D communication with the second UE.  The method according to any one of claims 1 to 9, wherein the first The UE selects the first uplink from the set of uplink spectrum resources that the first UE can use for D2D communication Spectrum resources, including:  The first UE selects the first uplink spectrum resource from a subset of the uplink spectrum resource set.  The method according to any one of claims 1 to 9, wherein the first UE selects a first uplink spectrum resource from an uplink spectrum resource set that the first UE can use for D2D communication, Includes:  The first UE generates a random number, and selects the first uplink spectrum resource from the set of uplink spectrum resources according to the random number.  12. An inter-device communication method, comprising:  The spectrum occupancy information is used to indicate the uplink spectrum resource occupied by the at least one partition, where the at least one partition is obtained by dividing the cell covered by the base station; and sending the spectrum to the first user equipment UE Occupancy information, so that the first UE selects a first uplink spectrum resource from an uplink spectrum resource set that the first UE can use for inter-device D2D communication, and performs D2D with the second UE by using the first uplink spectrum resource. Communication, wherein the set of uplink spectrum resources is determined by the first UE according to the spectrum occupancy information.  The method according to claim 12, wherein the spectrum occupation information is used to indicate an uplink spectrum resource occupied by all the partitions, or the spectrum occupation information is used to indicate that the first UE is occupied by a partition. The uplink spectrum resource and/or the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupancy information is used to indicate the partition of the entire partition except the first UE and/or the second Uplink spectrum resources occupied by other partitions other than the partition where the UE is located.  The method according to claim 13, wherein the uplink spectrum resource set includes other partitions of the all partitions except the partition where the first UE is located and/or the partition where the second UE is located. The occupied uplink spectrum resources.  15. Method according to claim 13 or 14, characterized in that  In the spectrum occupancy information, each m-bit corresponds to an allocation unit, the m-bit is used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and all allocation units corresponding to the spectrum occupancy information are arranged in order Where m is a positive integer; or, In the spectrum occupancy information, each X bit corresponds to a partition, the X bit is used to indicate at least one allocation unit occupied by the partition corresponding to the X bit, and all partitions corresponding to the spectrum occupancy information are in order Arranged, where X is a positive integer; or, In the spectrum occupancy information, each bit corresponds to an allocation unit, and the bit is used to indicate whether an allocation unit corresponding to the bit is occupied by a partition where the first UE is located and/or a partition where the second UE is located. And all the allocation units corresponding to the spectrum occupancy information are arranged in order;  The allocation unit includes a plurality of consecutive resource block groups RBG.  The method according to any one of claims 12 to 15, wherein the sending the spectrum occupation information to the first UE comprises:  Transmitting downlink control information DCI to the first UE by using a physical downlink control channel PDCCH, where the DCI includes the spectrum occupation information; or  Transmitting a DCI to the first UE by using a PDCCH, where the DCI is used to indicate a time-frequency resource location occupied by the spectrum occupation information on a physical downlink shared channel (PDSCH), and sending the foregoing to the first UE by using the PDSCH. Spectrum occupancy information; or,  Transmitting the spectrum occupancy information to a group of UEs including the first UE by using a physical multicast channel PMCH; or  The spectrum occupancy information is transmitted to a group of UEs including the first UE through a physical broadcast channel PBCH.  The method according to claim 16, wherein the DCI is appended with a 16-bit cyclic redundancy check CRC, and the CRC is scrambled by a group of UE common radio network temporary identifiers RNTI, the one The group UE includes the first UE.  The method according to any one of claims 12 to 17, wherein the transmitting the spectrum occupation information to the first UE comprises:  Transmitting the spectrum occupation information to the first UE in any one of the Nth subframe to the (N+k-1)th subframe, where the spectrum occupancy information is used to indicate the (N+k) An uplink spectrum resource occupied by the at least one partition in the subframe, where N and k are positive integers.  The method according to any one of claims 12 to 18, wherein the transmitting the spectrum occupation information to the first UE comprises: Transmitting the spectrum occupation information to a group of UEs that include the first UE, where the group of UEs is all UEs in a partition where the first UE is located, or the group of UEs includes the first All UEs in multiple neighboring partitions of the partition in which the UE is located, or the group of UEs are all UEs in all partitions, or the group of UEs are D2D-capable UEs in the partition where the first UE is located, or The group of UEs is in multiple adjacent partitions including the partition where the first UE is located a D2D-capable UE, or the group of UEs is a D2D-capable UE of all partitions, or the set of UEs are all UEs within the angle of the beam-aligned first UE, or A group of UEs are D2D capable UEs within the angle of the beam-aligned first UE.  The method according to any one of claims 12 to 19, wherein before the determining spectrum occupancy information, the method further comprises:  The cell covered by the base station is divided into a plurality of partitions.  The method according to claim 20, wherein the dividing the cell covered by the base station into multiple partitions comprises:  Dividing a cell covered by the base station into a plurality of sector-shaped partitions according to a radiation angle of an antenna of the base station; or  The cell covered by the base station is divided into a plurality of ring segments according to the coverage of the base station.  The method according to claim 20 or 21, wherein the dividing the cell covered by the base station into multiple partitions comprises:  The cells covered by the base station are all divided into the plurality of partitions.  23. A user equipment, comprising:  a receiving unit, configured to receive spectrum occupation information from a base station, where the spectrum occupation information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is obtained by dividing a cell covered by the base station;  a communication unit, configured to select a first uplink spectrum resource from the set of uplink spectrum resources that the first UE can use for inter-device D2D communication, and perform D2D communication with the second UE by using the first uplink spectrum resource, where The set of uplink spectrum resources is determined by the first UE according to the spectrum occupancy information.  The user equipment according to claim 23, wherein the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by all the partitions, or the spectrum occupancy information is used to indicate a partition where the first UE is located. The occupied uplink spectrum resource and/or the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupation information is used to indicate the partition and/or the part of the all partitions except the first UE. The uplink spectrum resources occupied by other partitions other than the partition where the UE is located; The set of uplink spectrum resources includes a partition of the all partitions except the first UE and / or uplink spectrum resources occupied by other partitions other than the partition where the second UE is located.  The communication unit is specifically configured to select, as the first uplink, an uplink spectrum resource that is not adjacent to the partition where the first UE is located and is not adjacent to the partition where the second UE is located, from the uplink spectrum resource set. Spectrum resources.  25. The user equipment of claim 24, wherein  In the spectrum occupancy information, each m-bit corresponds to an allocation unit, the m-bit is used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and all allocation units corresponding to the spectrum occupancy information are arranged in order Where m is a positive integer; or,  In the spectrum occupancy information, each X bit corresponds to a partition, the X bit is used to indicate at least one allocation unit occupied by the partition corresponding to the X bit, and all partitions corresponding to the spectrum occupancy information are in order Arranged, where X is a positive integer; or,  In the spectrum occupancy information, each bit corresponds to an allocation unit, and the bit is used to indicate whether an allocation unit corresponding to the bit is occupied by a partition where the first UE is located and/or a partition where the second UE is located. And all the allocation units corresponding to the spectrum occupancy information are arranged in order;  The allocation unit includes a plurality of consecutive resource block groups RBG.  The user equipment according to any one of claims 23 to 25, wherein the receiving unit is specifically configured to receive downlink control information DCI from the base station by using a physical downlink control channel PDCCH, where the DCI includes The spectrum occupancy information is received; or the DCI is received from the base station by using a PDCCH, where the DCI is used to indicate a time-frequency resource location occupied by the spectrum occupation information on a physical downlink shared channel PDSCH, and the PDSCH is adopted according to the DCI. Receiving the spectrum occupancy information from the base station; or receiving the spectrum occupancy information from the base station by using a physical multicast channel PMCH; or receiving the spectrum occupancy information from the base station by using a physical broadcast channel PBCH.  The user equipment according to any one of claims 23 to 26, wherein the receiving unit is specifically configured to receive, by the base station, the base station from a Nth subframe to a (N+k-1) a spectrum occupancy information that is sent in any one of the sub-frames, where the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by the at least one partition in the (N+k)th subframe, where N and k are A positive integer. The user equipment according to any one of claims 23 to 27, wherein the communication unit is further configured to: when the first UE receives a negative acknowledgement NACK from the second UE, And selecting a second uplink spectrum resource from the set of uplink spectrum resources, and performing D2D communication with the second UE by using the second uplink spectrum resource.  The user equipment according to any one of claims 23 to 28, wherein the communication unit is specifically configured to select the first uplink spectrum resource from a subset of the uplink spectrum resource set.  The user equipment according to any one of claims 23 to 28, wherein the communication unit is specifically configured to generate a random number, and select the selected from the uplink spectrum resource set according to the random number. The first uplink spectrum resource.  31. A base station, comprising:  a determining unit, configured to determine spectrum occupancy information, where the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by at least one partition, where the at least one partition is obtained by dividing a cell covered by the base station;  a sending unit, configured to send the spectrum occupation information to the first user equipment UE, so that the first UE selects the first uplink spectrum resource from the uplink spectrum resource set that the first UE can use for inter-device D2D communication, And performing the D2D communication with the second UE by using the first uplink spectrum resource, where the uplink spectrum resource set is determined by the first UE according to the spectrum occupancy information.  The base station according to claim 31, wherein the spectrum occupancy information is used to indicate an uplink spectrum resource occupied by all the partitions, or the spectrum occupancy information is used to indicate that the first UE is occupied by a partition. The uplink spectrum resource and/or the uplink spectrum resource occupied by the partition where the second UE is located, or the spectrum occupancy information is used to indicate the partition of the entire partition except the first UE and/or the second Uplink spectrum resources occupied by other partitions other than the partition where the UE is located;  The uplink spectrum resource set includes uplink spectrum resources occupied by the partitions other than the partition where the first UE is located and/or the partition where the second UE is located.  33. The base station according to claim 32, wherein:  In the spectrum occupancy information, each m-bit corresponds to an allocation unit, and the m-bit is used to indicate a partition to which the allocation unit corresponding to the m-bit belongs, and all allocation units corresponding to the spectrum occupancy information are arranged in order. Where m is a positive integer; or, In the spectrum occupancy information, each X bit corresponds to a partition, and the X bit is used to indicate at least one allocation unit occupied by the partition corresponding to the X bit, and the spectrum occupancy information pair All partitions should be in order, where X is a positive integer; or,  In the spectrum occupancy information, each bit corresponds to an allocation unit, and the bit is used to indicate whether an allocation unit corresponding to the bit is occupied by a partition where the first UE is located and/or a partition where the second UE is located. And all the allocation units corresponding to the spectrum occupancy information are arranged in order;  The allocation unit includes a plurality of consecutive resource block groups RBG.  The base station according to any one of claims 31 to 33, wherein the sending unit is specifically configured to send downlink control information DCI to the first UE by using a physical downlink control channel PDCCH, where the DCI includes The spectrum occupancy information is sent to the first UE by using a PDCCH, where the DCI is used to indicate a time-frequency resource location occupied by the spectrum occupation information on a physical downlink shared channel (PDSCH), and the PDSCH is used to Transmitting, by the first UE, the spectrum occupancy information; or transmitting, by using a physical multicast channel PMCH, the spectrum occupation information to a group of UEs that include the first UE; or, by using a physical broadcast channel PBCH A group of UEs of a UE transmits the spectrum occupancy information.  The base station according to any one of claims 31 to 34, wherein the sending unit is specifically configured to use any one of a subframe from the Nth subframe to the (N+k-1)th subframe. Sending the spectrum occupation information to the first UE, where the spectrum occupation information is used to indicate an uplink spectrum resource occupied by the at least one partition in the (N+k)th subframe, where N and k are positive integers .  The base station according to any one of claims 31 to 35, wherein the sending unit is configured to send the spectrum occupation information to a group of UEs including the first UE, where a group of UEs is all UEs in a partition where the first UE is located, or the group of UEs is all UEs in multiple neighboring partitions including the partition where the first UE is located, or the group of UEs is all All the UEs of the partition, or the group of UEs are D2D-capable UEs in the partition where the first UE is located, or the group of UEs are in multiple neighboring partitions including the partition where the first UE is located a D2D-capable UE, or the group of UEs is a D2D-capable UE of all partitions, or the set of UEs are all UEs within the angle of the beam-aligned first UE, or the one The group UE is a D2D capable UE within the angle of the beam-aligned first UE. The base station according to any one of claims 31 to 36, wherein the base station further includes a dividing unit, configured to divide, according to the determining spectrum occupation information, a cell covered by the base station into Multiple partitions. The base station according to claim 37, wherein the dividing unit is configured to divide a cell covered by the base station into a plurality of sector-shaped partitions according to a radiation angle of an antenna of the base station; or The coverage of the base station divides the cell covered by the base station into multiple ring segments.  The base station according to claim 37 or 38, wherein the dividing unit is configured to evenly divide a cell covered by the base station into the plurality of partitions.