WO2017036272A1

WO2017036272A1 - Resource selection method and device

Info

Publication number: WO2017036272A1
Application number: PCT/CN2016/093094
Authority: WO
Inventors: 王文焕; 杨瑾; 黄双红
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-01
Filing date: 2016-08-03
Publication date: 2017-03-09
Also published as: CN106488560A

Abstract

A resource selection method, comprising: a UE acquires resource pre-configuration information, and according to the resource pre-configuration information and a service type determines a useable unoccupied resource, wherein, the resource pre-configuration information at least comprises an unoccupied resource amount and priority level configuration information. The above resource selection method realizes resource selection on the basis of priority level.

Description

Resource selection method and device

Technical field

The present application relates to, but is not limited to, the field of communications, and in particular, to a resource selection method and apparatus.

Background technique

In the cellular system, when there is a service between the two user equipments (UE, User Equipment), the service data of the user equipment 1 (UE1) to the user equipment 2 (UE2) is first transmitted to the cell where the UE1 is located through the air interface. The base station (also referred to as an eNB, or an evolved eNB) transmits the user data of the UE1 to the base station of the cell where the UE2 is located through the core network, and the base station transmits the user data to the UE2 through the air interface. The service data transmission from UE2 to UE1 adopts a similar processing flow.

However, in reality, with the diversification of mobile communication services, for example, social networking, electronic payment, and the like are increasingly used in wireless communication systems, so that the demand for service transmission between close-range users is increasing. Therefore, the communication mode of device-to-device (D2D) has received increasing attention. The so-called D2D means that the service data is not forwarded by the base station, and is directly transmitted by the source user equipment to the target user equipment through the air interface, and may also be called a ProSe (Proximity Service). This communication mode is different from the communication mode of a conventional cellular system. For users of short-range communication, D2D not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network.

The D2D communication standardized in the Release 12 (R12) version is broadcast communication, and is divided into two modes depending on whether or not there is base station participation. Mode 1 communication means that the eNB schedules the transmitting end device (Tx UE) to perform D2D data transmission, that is, each D2D data packet resource transmitted by the Tx UE is indicated by the eNB, D2D After the UE establishes a Radio Resource Control (RRC) connection with the eNB, Mode 1 communication can be performed under the unified scheduling of the eNB. Mode 2 communication means that in a given resource pool, the D2D Tx UE is free to compete for the selected resource for D2D data transmission.

In the Release 13 (R13) version, data priority, relay, etc. have been added. Service requirements, the free competition in the relevant R12 version of the choice of resources can not meet the different priorities. In the case of a device-to-device relay (UE-to-UE relay) scenario, the priority of the relay UE is higher than that of the normal D2D UE. However, since the resource preemption probability of all user equipments is the same, D2D Relay is caused. When the UE and the D2D UE exist simultaneously, a resource collision problem occurs, and the access probability of the external D2D Relay UE is low. Different resource pool configurations are used to securely support different priority services, which causes a large waste of resources when there are fewer high-priority services.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a resource selection method and apparatus, which implement resource selection based on priorities.

An embodiment of the present invention provides a resource selection method, including: a user equipment (UE) acquires resource pre-configuration information; the UE determines a vacant resource that can be used according to the resource pre-configuration information and the service type; where the resource pre-configuration information includes at least The amount of free resources and priority configuration information.

The embodiment of the present invention further provides a resource selection device, which is applied to a user equipment, and includes: an obtaining module, configured to acquire resource pre-configuration information; and a processing module, configured to determine, according to the resource pre-configuration information and the service type, a spare that can be used. The resource pre-configuration information includes at least a vacant resource quantity and priority configuration information.

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the resource selection method being implemented when the computer executable instructions are executed.

In the embodiment of the present invention, the UE acquires the resource pre-configuration information, and determines the available vacant resources according to the resource pre-configuration information and the service type, where the resource pre-configuration information includes at least the vacant resource amount and the priority configuration information. The embodiment of the present invention performs resource selection by using a priority-based method, dynamically adjusts resource selection according to priority configuration information, and improves resource utilization.

In the embodiment of the present invention, 1) in the UE-to-UE relay scenario, dynamically adjust the Relay UE resource pool and the D2D UE resource pool according to the resource occupancy situation in the random resource selection to ensure the user equipment of the high priority service. Resource preemption, thereby increasing the access probability of the overlay relay UE, reducing The resource collision between the D2D Relay UE and the D2D UE; 2) In the scenario of multiple priorities, the high priority service user preferentially selects the resource pool according to the resource pre-configuration information, and the low priority service user guarantees the high priority user After the configuration, the resource pool is selected to reflect the access capabilities of different priorities.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a flowchart of a resource selection method according to an embodiment of the present invention;

2 is a flowchart of a resource selection method according to Embodiment 1 of the present invention;

3 is a schematic diagram 1 of a configuration of a physical shared control channel (PSCCH) resource pool in an embodiment of the present invention;

4 is a schematic diagram 2 of a configuration of a PSCCH resource pool according to an embodiment of the present invention;

FIG. 5 is a schematic diagram 3 of a configuration of a PSCCH resource pool according to an embodiment of the present invention;

6(a) and (b) are schematic diagrams showing resource allocation of a Relay UE and a Remote UE according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a relay UE sending control information according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a resource selection apparatus according to an embodiment of the present invention.

Embodiments of the invention

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a resource selection method according to an embodiment of the present invention. As shown in FIG. 1, the resource selection method provided in this embodiment includes the following steps:

Step 11: The user equipment (UE) acquires resource pre-configuration information. The resource pre-configuration information includes at least a vacant resource quantity and priority configuration information.

In an embodiment, the priority configuration information includes: a pre-configured spare resource amount corresponding to different priority services and a vacant resource selection mode of the user equipment according to different priority services.

The manner in which the user equipment selects the available resources according to different priority services includes:

The user equipment selects a pre-configured spare resource quantity corresponding to the service priority of the user equipment from the detected vacant resources according to the priority of the service.

The user equipment selects, according to the priority of the service, the amount of the pre-configured spare resources corresponding to the service priority of the user equipment, including: according to the high frequency to the low frequency. The amount of vacant resources detected is selected, or selected from the detected amount of vacant resources from low frequency to high frequency.

For example, the service priority of the n user equipment groups is A1, A2, ..., An, and the priority relationship is A1>A2>...>An, and the pre-configured spare resources corresponding to A1 to An are K1 and K2, respectively. , ..., Kn, when the amount of vacant resources detected by the user equipment is N, in the vacant resource quantity N, according to the high frequency to the low frequency or the low frequency to the high frequency, sequentially configure the pre-configured spare resources for the user equipment group whose service is A1 level. The quantity K1 and the service are configured for the user equipment group of the A2 level to configure the pre-configured spare resource quantity K2, and so on, until the spare resource quantity N is all allocated. In this way, the user equipment of the A1 level selects the vacant resource from the pre-configured vacant resource quantity K1, and the user equipment of the A2 level selects the vacant resource from the pre-configured spare resource quantity K2, and so on. Where n is an integer greater than 1, and N is an integer greater than or equal to 1.

In an embodiment, the priority configuration information includes: an occupation ratio of the pre-configured spare resource amount corresponding to the different priority services, and a vacant resource selection manner of the user equipment according to different priority services.

The user equipment converts the occupation ratio of the pre-configured spare resource amount corresponding to the pre-configured different priority services into the simplest integer ratio with the same denominator;

When the multiple of the sum of the numerators of the simplest integer ratios of the pre-configured spare resources corresponding to the different priority services is less than or equal to the detected amount of the vacant resources, the occupancy ratio of the pre-configured spare resources corresponding to the different priority services, The first value and the second value determine the pre-configured spare resource amount corresponding to the different priority services, and the user equipment selects the service from the user equipment according to the priority of the service type from high to low. a pre-configured amount of spare resources corresponding to the priority, wherein the first value is a rounded value of a ratio of the detected amount of the vacant resource to the sum of the simplest integers of the pre-configured vacant resources, the second value The remainder of the ratio of the sum of the detected vacant resources to the sum of the simplest integers of the pre-configured vacant resources.

The user equipment is sequentially updated from the detected priority according to the priority of the service. The amount of the pre-configured spare resource corresponding to the service priority of the user equipment is selected in the source quantity, including: selecting the amount of the vacant resource detected from the high frequency to the low frequency, or detecting from the low frequency to the high frequency The amount of spare resources is selected.

For example, the service priority of the n user equipment groups is A1, A2, ..., An, and the priority relationship is A1>A2>...>An, and the ratio of the pre-configured spare resources corresponding to A1 to An is K1:K2. :...:Kn, where K1, K2, ..., Kn are integers greater than 0, and there is no common divisor between the values. When the detected amount of vacant resources is N, the first value P = INT(N /(K1+K2+...+Kn)), the second value M=MOD(N/(K1+K2+...+Kn)), where INT represents a rounding operation and MOD represents a modulo operation. It can be seen from the calculation that, when M ≤ K1, the pre-configured spare resource corresponding to the user equipment of the A1 level is, for example, P*K1+M, and the pre-configured spare resource corresponding to the user equipment of the A2 level is, for example, P*. K2, and so on. When K1 < M ≤ K1 + K2, the pre-configured spare resource corresponding to the user equipment of the A1 level is, for example, P*K1+K1, and the pre-configured spare resource corresponding to the user equipment of the A2 level is, for example, P*. K2+M-K1, and so on, M is preferentially assigned to the user equipment of the A1 level, and then the user equipment of the A2 level until M-(K1+K2+...+Ki)<0. Where n is an integer greater than 1, N is an integer greater than or equal to 1, and i is an integer greater than or equal to 1.

According to this, in the vacant resource quantity N, according to the high frequency to the low frequency or the low frequency to the high frequency, when M ≤ K1, the pre-configured spare resource quantity P*K1+M is configured for the user equipment whose service is the A1 level, and the service is The A2 level user equipment is configured with the pre-configured spare resource amount P*K2, and so on. In this way, the user equipment of the A1 level selects the spare resource from the pre-configured spare resource quantity P*K1+M, and the service equipment of the A2 level selects the spare resource from the pre-configured spare resource quantity P*K2, and so on. When K1 < M ≤ K1 + K2, the pre-configured spare resource corresponding to the user equipment of the A1 level is, for example, P*K1+K1, and the pre-configured spare resource corresponding to the user equipment of the A2 level is, for example, P*. K2+M-K1, and so on, M is preferentially assigned to the user equipment of the A1 level, then the user equipment of the A2 level, until M-(K1+K2+...+Ki)<0, each level of user equipment The resource is selected in the corresponding pre-configured spare resource according to the service priority.

In an embodiment, the priority configuration information includes: a resource pool corresponding to different priority services, a preset ratio of the amount of idle resources in each resource pool and a total resource amount of the corresponding resource pool, and a priority of the user equipment according to different priorities. The choice of spare resources for the level of business.

When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is greater than or equal to the preset ratio of the resource pool, the user equipment selects the vacant resource from the resource pool;

When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is less than the preset ratio of the resource pool, the user equipment has a lower priority from the resource pool and the service priority. The resource pool of the resource pool is selected from the resource pool, and the ratio of the resource pool and the resource resource in the resource pool of the resource pool to the total resource amount of the resource pool is greater than or equal to the preset ratio. .

The user equipment selects the vacant resource in the following manner, and the service priority is lower than the resource pool in the resource pool: from all the resource pools whose service priority is lower than the resource pool, the service priority is from high to low. The resource pools are sequentially selected in sequence, or sequentially selected according to the resource pools whose service priorities are from low to high.

For example, the resources are divided into n resource pools R1, R2, ..., Rn that do not overlap each other, and respectively correspond to n service priorities A1, A2, ..., An, where n service priority relationships are A1>A2> ...>An, the preset ratio of the idle resource amount of the resource pool Ri to the total resource amount of the resource pool Ri is Pi. Where n is an integer greater than 1, and i is less than or equal to n.

When the user equipment of the service Ai detects that the actual ratio of the amount of the idle resource in the resource pool Ri to the total resource amount of the resource pool Ri is greater than or equal to the preset ratio Pi of the resource pool Ri, the service is the user equipment slave resource of the Ai level. Select a spare resource in the pool Ri;

When the user equipment of the service Ai checks that the actual ratio of the amount of the idle resource in the resource pool Ri to the total resource amount of the resource pool Ri is less than the preset ratio Pi of the resource pool Ri, the service is the user equipment of the Ai level from the resource pool Ri. And selecting a spare resource in the resource pool whose service priority is lower than the resource pool Ri (for example, the resource pool Ri+1, Ri+2, or the resource pool Rn, Rn-1), wherein the resource pool Ri and the priority are lower than The ratio of the amount of vacant resources in the resource pool of the resource pool Ri (for example, the resource pool Ri+1, Ri+2, or the resource pool Rn, Rn-1) to the total resource amount of the resource pool Ri is greater than or equal to a preset ratio. Pi.

In an embodiment, the priority configuration information includes: a resource pool corresponding to different priority services, a preset collision probability of each resource pool, and a vacant resource of the user equipment according to different priority services. options.

When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is less than or equal to the preset collision probability of the resource pool, the user equipment selects the vacant resource from the resource pool corresponding to the priority of the service, where The collision probability of the resource pool is equal to the reciprocal of the amount of vacant resources of the resource pool detected by the user equipment;

When the user equipment detects that the collision probability of the resource pool corresponding to the service priority is greater than the preset collision probability of the resource pool, the user equipment has a resource pool corresponding to its own service priority and the service priority is lower than the resource pool. The vacant resource is selected in the resource pool, wherein the resource pool detected by the user equipment and the reciprocal of the vacant resource in the resource pool whose service priority is lower than the resource pool are less than or equal to the preset collision probability.

For example, the resources are divided into n resource pools R1, R2, ..., Rn that do not overlap each other, and respectively correspond to n service priorities A1, A2, ..., An, where n service priority relationships are A1>A2> ...>An, the preset collision probability of the resource pool Ri is Pi. Where n is an integer greater than 1, and i is less than or equal to n.

When the user equipment detects that the collision probability Qi of the resource pool Ri is less than or equal to the preset collision probability Pi of the resource pool Ri, the user equipment service is Ai level, and the spare resource is selected from the resource pool Ri; wherein the collision probability Qi=1/ The actual amount of vacant resources of the resource pool Ri;

When the collision probability Qi of the resource pool Ri is greater than the preset collision probability Pi of the resource pool Ri, the user equipment service is Ai level, and the resource pool Ri and the resource pool whose service priority is lower than the resource pool Ri (for example, resources) The pools Ri+1, Ri+2, or the resource pools Rn, Rn-1) select the vacant resources, wherein the resource pool Ri and the resource pool whose service priority is lower than the resource pool Ri (for example, the resource pool Ri+1, Ri+2, or the reciprocal of the amount of spare resources in the resource pools Rn, Rn-1) is less than or equal to the preset collision probability Pi.

Step 12: The UE determines the available spare resources according to the resource pre-configuration information and the service type.

The UE determines the available spare resources according to the service type, the detected amount of spare resources, and the priority configuration information.

This embodiment is divided into two processes of listening and occupying for a D2D UE that needs to communicate. The interception process learns the resource occupation status by power detection or decoding the corresponding resource unit, and considers that the resource occupied by the next period continues to be used by the user equipment until a certain period of detection is empty. The power detection is resource detection, and the corresponding time-frequency resource power exceeds a certain threshold (such as M), or the resource is correctly decoded, and the control channel obtains its control channel content, that is, the resource occupancy of the user equipment communication or according to the control channel. Decoding, further decoding the broadcast or unicast traffic associated with the user equipment at the indicated traffic channel.

For each user equipment, whether it is a user equipment with a high service priority or a user equipment with a low service priority, it will first listen to the vacant resources of a period before preparing the resource for preemption. In the next cycle, according to the user equipment service priority configuration, the vacant resources that are intercepted, and the service requirements of the D2D UE in the next cycle, the resources are preempted on which resources.

It should be noted that when the embodiment of the present invention is configured for different service priority users, the priority configuration information includes priority configuration performed by users for different service priorities.

The present application is described below by various embodiments.

Embodiment 1

FIG. 2 is a flowchart of a resource selection method according to Embodiment 1 of the present invention. As shown in FIG. 2, the resource selection method provided in this embodiment includes:

Step 101: The UE detects a vacant resource of the resource pool.

Step 102: Determine an area of random resource selection according to resource pre-configuration information.

The scenario in this embodiment is a D2D outdoor coverage, and the Remote UE1 and the Remote UE2 communicate through the Relay UE. The present embodiment will be described in detail below.

In this embodiment, the resource pool of the user equipment of the service priority class A1 is R1, and the resource pool of the user equipment of the service priority class A2 is R2, that is, the resource pool is divided by the frequency division mode, where the A1 level service is The priority is higher than the A2 level service.

For the outdoor coverage scenario, the priority of the data packet selected as the Relay UE is greater than the D2D UE that needs to communicate, the Relay UE is the user equipment of the A1 level service, and the other D2D UEs are the A2 level service. For the user equipment, the ratio of the vacant resource of the resource pool R1 corresponding to the user equipment of the A1 level service to the pre-configured resource quantity (that is, the total resource quantity of the resource pool R1) is P1=0.6, and the user equipment of the A2 level service The ratio of the amount of vacant resources of the corresponding resource pool R2 to the amount of pre-configured resources (ie, the total amount of resources of the resource pool R2) is P2=0.4. Here, the resource pool R1 is used by the D2D Relay UE, and the resource pool R2 is used by the D2D UE. Since the service priority of the D2D UE is lower than that of the Relay UE, the resource pool R2 can be dynamically adjusted to preferentially satisfy the Relay UE.

For example, as shown in FIG. 3, the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 5, and the vacant resource quantity K2 in the resource pool R2 is 5. The total resource amount of the resource pool R1 is 8. At this time, the total resource amount of the resource pool R1 K1/the total resource of the resource pool R1=5/8=0.625>P1(0.6), and the A1 level is satisfied if the preset requirement is met. The user equipment of the service performs resource selection on the vacant resources of the resource pool R1, such as physical resource block (PRB),

number

1, 2, 3, 4, and 7;

As shown in Figure 3, the user equipment of the A2 service listens to the vacant resources in the first period. The vacant resource quantity K1 in the resource pool R1 is 5, and the vacant resource quantity K2 in the resource pool R2 is 5. The resource pool R2 The total resource amount of the A2 level service is 8 at this time. The total resource quantity of the resource pool K2 of the resource pool R2/the total resource quantity of the resource pool R2=5/8=0.625>P2(0.4), and the user equipment of the A2 level service is satisfied. Resource selection is performed on the vacant resources of the resource pool R2, such as

PRB numbers

9, 11, 12, 13, and 15.

For example, as shown in FIG. 4, the user equipment of the A1 level service listens to the vacant resource in the first period, the vacant resource quantity K1 in the resource pool R1 is 4, and the vacant resource quantity K2 in the resource pool R2 is 5. The total resource amount of the resource pool R1 is 8. At this time, the total resource amount of the resource pool R1 K1/the total resource of the resource pool R1=4/8=0.5<P1(0.6) does not meet the preset requirement. The resource pool corresponding to the user equipment of the A1 service is adjusted as shown in FIG. 4, and the user equipment of the A1 service performs resource selection on the spare resource in the resource pool R1+Ri area; at this time, the resource pool R1+Ri is free. The amount of resources is 6. The amount of resources in the resource pool R1+Ri/the total resource in the resource pool R1=6/8=0.75>P1(0.6). If the preset requirements are met, the user equipment of the A1 service is in the resource pool R1. Resource selection on +Ri's spare resources, such as PRB

serial numbers

1, 2, 4, 7, 9, 11;

As shown in Figure 4, the user equipment of the A2 service listens to the vacant resources in the first period. The vacant resource quantity K1 in the resource pool R1 is 4, and the vacant resource quantity K2 in the resource pool R2 is 5. The resource pool R2 The total amount of resources is 8, at this time, the total amount of spare resources K2 of the resource pool R2 / the total of the resource pool R2 The amount of resources is 5/8=0.625. Since the user equipment of the A1 service does not meet the preset requirement, that is, greater than or equal to P1 (0.6), the resource adjustment is performed based on the preset requirements of the user equipment that preferentially satisfies the A1 service, and the A2 is adjusted. The resource pool corresponding to the user equipment of the level service is R2-Ri. As shown in Figure 4, the user equipment of the A2 level service performs resource selection on the spare resources of the adjusted resource pool area. At this time, the resource pool R2-Ri The amount of vacant resources is 3, the vacant resources of the resource pool R2-Ri/the total resources of the resource pool R2=3/8=0.375<P2(0.4), which do not meet the preset requirements, and the users of the A2 level service are reduced. The optional vacant resources of the device are used to preferentially ensure the vacant resource selection of the user equipment of the A1 level service with high priority.

For example, as shown in FIG. 5, the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 3, and the vacant resource quantity K2 in the resource pool R2 is 4. The total resource amount of the resource pool R1 is 8. In this case, the total resource amount of the resource pool R1 and the total resource amount of the resource pool R1=3/8=0.375<P1(0.6), that is, the user equipment of the A1 level service is not The resource pool corresponding to the user equipment of the A1 service is adjusted as shown in FIG. 5, and the user equipment of the A1 service performs resource selection on the spare resource in the resource pool R1+R2 area; The vacant resource of the resource pool R1+R2 is 7, and the vacant resource of the resource pool R1+R2/the total resource of the resource pool R1=7/8=0.875>P1(0.6), and the A1 level service is satisfied if the preset requirement is met. The user equipment performs resource selection on the vacant resources of the resource pool R1+R2, such as

PRB numbers

2, 4, 7, 9, 12, 13, and 15;

As shown in FIG. 5, the user equipment of the A2 service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 3, and the vacant resource quantity K2 in the resource pool R2 is 4, in order to satisfy A1. The user equipment of the A2 service is required to serve the user equipment of the A1 service, that is, the user equipment of the A2 service is in the next user access (SA, Subscriber Access) resource occupation period. In order to ensure that the resource occupancy probability of the user equipment of the A1 service is not preempted, the amount of the spare resource of the resource pool R1 corresponding to the user equipment of the A1 level service of a certain SA resource period meets the preset requirement, as shown in the figure. The resource pool R1 shown in FIG. 3 or the adjusted resource pool R1 in FIG. 4 performs resource preemption. For example, the resource of the resource pool R2 shown in FIG. 3 and the resource of the adjusted resource pool R2 shown in FIG. Resource selection of user equipment for A2 level service.

Here, the case where the user equipment of the A1 level service is the Relay UE, due to the coverage of the Relay The UE is used for the information exchange of the two Remote UEs, and the resources reserved by the Relay UE are used for the Remote UE in the next cycle, that is, the Relay UE and the Remote UE are time-division multiplexed, as shown in FIG. 6(a) and FIG. 6(b). The process is as follows:

The working period of the Relay UE and the Remote UE is notified by the signaling or the pre-configuration. After the SA0 period is monitored, in the SA period 1, the Relay UE is used by the Relay UE after the SA1 preemption to indicate that it is performing on the resource R1 to the Remote UE1 user. After the SA2 preemption, the Relay UE is used by the Relay UE to indicate that it sends the related information to the Remote UE2 user on the resource R2. In the next cycle SA, the SA1 is used to indicate that the Remote UE1 user is in the resource R1 to the Relay UE. The communication is performed, and SA2 is used to instruct the Remote UE2 to communicate with the Relay UE on the resource R2. Or, when the Relay UE establishes a link with the Remote UE, notifying the start period of the Relay UE, the Remote UE will send in the next period, or the pre-configured parity period is used for the Relay UE and the Remote UE;

In the control signaling, the data is sent to the Remote UE or the Relay UE. After the SA0 period is monitored, in the SA period 1, the Relay UE is used for the Relay UE to indicate that the Remote UE1 user sends the related information on the resource R1 after the SA1 preemption. After the SA2 preemption, the Relay UE is used to indicate that the Remote UE2 user sends the related information on the resource R2. In the next cycle SA, the SA1 is used to indicate that the Relay UE performs communication to the Remote UE1 on the resource R1. The relay UE is instructed to perform communication to the Remote UE 2 on the resource R2.

As shown in FIG. 7, the control information of the Relay UE and the Remote UE1 and the Remote UE2 is sent by the Relay UE, where the content of the control information is as shown in Table 1, which is used to indicate that the Relay UE sends the resource or sends the Remote UE. One bit indication of the resource.

Table 1

Embodiment 2

The scene in this embodiment is an outdoor coverage scenario. Here, the service priority of the Relay UE is greater than that of the D2D UE that needs to communicate, the Relay UE is sent as the A1 level data packet, and the other D2D is used as the A2 level data packet, where the A1 level service is used. If the priority is higher than that of the A2 service, the resource pool of the user equipment with the priority of the A1 is R1, the resource pool of the user equipment with the priority of the A2 is R2, and the default collision probability of the resource pool R1 is 0.2. The preset collision probability of the resource pool R2 is P2=0.25, wherein the collision probability is the reciprocal of the vacant resource amount in the corresponding resource pool;

For example, as shown in FIG. 3, the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1=5 in the resource pool R1, and the vacant resource quantity K2=5 in the resource pool R2. The collision probability of the resource pooling of the resource pool R1 is 1/5=0.2=P1(0.2). If the preset requirement is met, the user equipment of the A1 level service performs resource selection on the spare resource of the resource pool R1 area, such as the PRB sequence number. 1, 2, 3, 4, 7;

As shown in Figure 3, the user equipment of the A2 service intercepts the vacant resources in the first period, the vacant resource quantity K1=5 in the resource pool R1, the vacant resource quantity K2=5 in the resource pool R2, and the resource pool R2 The collision probability of the resource preemption is 1/5=0.2<P2(0.25), and the user equipment of the A2 level service performs resource selection on the spare resource of the resource pool R2 area, such as the PRB

serial number

9, 11, 12, 13, 15

For example, as shown in FIG. 4, the user equipment of the A1 level service listens to the vacant resource in the first period, the vacant resource quantity K1 in the resource pool R1 is 4, and the vacant resource quantity K2 in the resource pool R2 is 5. The collision probability of the resource pooling of the resource pool R1 is 1/4=0.25>P1(0.2), which does not meet the preset requirement. In this case, the resource pool corresponding to the user equipment of the A1 level service is adjusted, for example, in the resource pool R2. Selecting the resource pool Ri area as the extended area of the resource pool R1, and selecting the vacant resource PRB number 9 from the left to the right as the resource selection area of the user equipment of the A1 level service, that is, the spare resource selected by the user equipment of the A1 level service is

PRB number

1, 2, 4, 7, and 9, the collision probability of the selected area is 1/5=0.2=P1, which satisfies the preset requirement;

As shown in FIG. 4, the user equipment of the A2 level service listens to the vacant resources in the first period. The amount of vacant resources K1 in the resource pool R1 is 4, the amount of vacant resources K2 in the resource pool R2 is 5, and the collision probability of resource preemption in the resource pool R2 is 1/5=0.2<P2(0.25), which satisfies the preset requirement. However, in order to meet the preset requirements of the user equipment of the A1 level service, the area of the resource pool R2 is reduced, for example, only the first frequency resource from the bottom up is occupied, and the spare resources are the PRB

serial numbers

12, 13, and 15. The collision probability is 1/3=0.33>P2(0.25), which does not meet the preset requirement, and continues to select the vacant resource with the PRB sequence number 11 from the bottom to the left. At this time, the collision probability is 1/4=0.25= P2, meet the preset requirements.

For example, as shown in FIG. 5, the user equipment of the A1 level service listens to the vacant resources in the first period, the vacant resource quantity K1 in the resource pool R1 is 3, and the vacant resource quantity K2 in the resource pool R2 is 4. The collision probability of the resource pooling of the resource pool R1 is 1/3=0.33>P1(0.2), which does not meet the preset requirement, and adjusts the resource pool R1 of the user equipment of the A1 level service, for example, the resource pool R2 is selected from the top to the bottom. The Ri area is used as the resource pool extension area, and the vacant resource PRB number 9 is selected from left to right as the selection area of the user equipment of the A1 level service, that is, the vacant resources selected by the user equipment of the A1 level service are

PRB numbers

2, 4, 7, and 9. The collision probability of the selected area is 1/4=0.25>P1(0.2), which still does not meet the design requirements. Continue to select the vacant resource to the right to the resource pool boundary and then select the vacant resource PRB number 12 downward. At this time, the collision probability is 1/5=0.2=P1, if the preset requirement is met, the remaining spare resources are used as the selected resources of the user equipment of the A2 level service, such as the PRB

serial numbers

13, 15.

Embodiment 3

In this embodiment, the resource pool is not divided, and only the pre-configured spare resources that can be used by each priority service (group or data packet) and the pre-configured spare resources that can be used by the user equipment with high priority service requirements are configured. The amount of pre-configured free resources that can be used by user equipment that is larger than the service requirement with low priority.

For the outdoor coverage scenario, the service priority of the Relay UE is greater than the D2D UE that needs to communicate. The data packet of the Relay UE is used as the A1 level, and the data packets of other D2D UEs are used as the A2 level, and the priority of the A1 level is higher than the priority of the A2 level. The pre-configured vacant resource of the D2D Relay UE is 6, and the pre-configured vacant resource of the D2D UE is 3, and the D2D Relay UE and the D2D UE use a unified resource pool.

For the configured resource pool, the D2D Relay UE retrieves the available vacant resources from top to bottom; for the configured resource pool, the D2D UE searches for the vacant resources that can be accessed from the bottom up.

For example, as shown in FIG. 3, the D2D Relay UE retrieves the

PRB sequence numbers

1, 2, 3, 4, 7, and 9 from the top to the bottom as vacant resources, that is, the six vacant resources are D2D Relay UE accessible resources. . The D2D UE searches for the

PRB sequence numbers

15, 13, and 12 from the bottom up to the vacant resources, that is, the three vacant resources are the accessible resources of the next cycle of the D2D UE.

As shown in FIG. 5, the D2D Relay UE retrieves the

PRB numbers

2, 4, 7, 9, 12, and 13 as vacant resources from the top to the bottom, that is, the six vacant resources are the accessible resources of the Relay UE, and only the vacant resources. The PRB sequence number 15 is an accessible resource of the D2D UE. When the amount of the vacant resources detected is less than the amount of the pre-configured vacant resources of the D2D Relay UE, only the D2D Relay UE is accessed in the next cycle, and the D2D UE is not accessed.

In this case, the data resource allocation is similar. In the data resource pool, the resources of each user equipment are the frequency domain PRB, the time domain subframe is the smallest unit, and the power detection is configured by the D2D resource pool. Resources, analyze the pool of spare resources that can be used. According to the power detection result, the available vacant resources are retrieved from the low frequency to the high frequency, and the predefined vacant resources are configured as the user equipment with high priority, and the remaining vacant resources are freely selected by the user equipment with low service priority.

Embodiment 4

In this embodiment, the resource pool is not divided, and only the ratio of the pre-configured spare resources that can be used by each priority is configured, and the user equipment with a high service priority uses a pre-configured spare resource that is larger than the user with a lower service priority. The amount of preconfigured free resources used by the device.

For the outdoor coverage scenario, the service priority of the Relay UE is greater than that of the D2D UE that needs to communicate. The service of the Relay UE is the A1 level, the other D2D UE services are the A2 level, and the priority of the A1 level is higher than the A2 level. The ratio of the configured spare resource amount to the pre-configured spare resource amount of the D2D UE is 2, and the D2D Relay UE and the D2D UE use the unified resource pool.

For example, as shown in FIG. 3, the total amount of vacant resources retrieved is 10, and the D2D Relay UE retrieves the

PRB numbers

1, 2, 3, 4, 7, 9, and 11 from the top down to the vacant resources, that is, 7 The vacant resources are D2D Relay UEs that can access resources, and the D2D UEs retrieve the PRB

serial numbers

15, 13, and 12 as vacant resources from the bottom up, satisfying the pre-configured vacant resources of the D2D Relay UE/preconfigured vacant resources of the D2D UE = Predefined requirements for 2.3>2,

ie PRB number

1, 2, 3, 4, 7, 9, 11 As the access resource of the D2D Relay UE in the next cycle, the

PRB sequence numbers

12, 13, and 15 serve as access resources for the next cycle of the D2D UE.

For example, as shown in FIG. 5, the D2D Relay UE retrieves the

PRB numbers

2, 4, 7, 9, 12, 13, and 15 from the top to the bottom as vacant resources, that is, 7 vacant resources, according to the pre-configuration requirements, PRB. No. 2, 4, 7, 9, and 12 are the access resources of the D2D Relay UE in the next cycle. The PRB

serial numbers

13 and 15 are used as the access resources of the D2D UE. In this case, the pre-configured spare resources of the D2D Relay UE are satisfied. The pre-configured vacancy resource of the D2D UE = the pre-configuration requirement of 2.5>2. In addition, when the pre-configured vacant resource amount of the D2D Relay UE/the pre-configured vacant resource amount of the D2D UE >=2 is not satisfied, all resources are used. D2D Relay UE.

In this case, the data resource allocation is similar. In the data resource pool, the resources of each user equipment are the frequency domain PRB, the time domain subframe is the smallest unit, and the power resource detection is configured for each subframe frequency resource of the D2D resource pool. A pool of spare resources that can be used. According to the power detection result, the available spare resources are retrieved from the low frequency to the high frequency, and are allocated to the user equipment with high service priority and the user equipment with low service priority according to a predefined ratio.

Embodiment 5

In this embodiment, the resource pool is divided into multiple independent areas R1, R2, R3, R4, R5, and R6 according to the pre-configuration. The resource pool can be divided into two-dimensional time-frequency, and the time-domain resource pool parameters are resource-based through startPRB1 and startPRB2. The pool frequency domain indicates the configuration, and the time domain is indicated by the time-resource pattern for transmitter (T-RPT), and the vacant resources that can be accessed by each service priority are pre-configured, and the priority is A1>A2. >A3>A4>A5>A6, when the user equipment service is A1 level, and the detected R1 vacant resources do not meet the predefined requirements, the resources of the combined R1 and R6 are used by the user equipment of the service priority level A1. When the vacant resources of R2 do not meet the predefined requirements, the merging R2 and R5 are used by the user equipment of the service priority A2 level, and the resources of the R3 and R4 are the users of the service priority A3 level when the resources of the R3 do not meet the requirements of the vacant resources. Equipment.

Embodiment 6

In this embodiment, the resource pool is divided into multiple independent resource pools of R1, R2, R3, R4, R5, and R6, and the spare resources that can be accessed by each priority are pre-configured, corresponding to the priority A1>A2>A3> A4>A5>A6, when the service is the user equipment of the A1 level, the R1 free resource is not detected. When the requirements are met, the resources of R1+R2 are selected to meet the A1 priority requirements. When the vacant resources of the user equipment of the A2 level do not meet the requirements, the vacant resources are selected in the next level of resources. And so on, until the available spare resources are all selected by the high-level user equipment.

Example 7

In this embodiment, the resource pools are not divided, and only the priority resources A1>A2>A3>A4>A5>A6 can be configured to meet the required pre-configured vacancy resources: P1, P2, P3, P4, P5, and P6. The user equipment searches for the vacant resources from the low frequency to the high frequency of the resource pool to satisfy the pre-configured spare resource amount P1 corresponding to the A1 priority service, and the user equipment whose service is the A1 level uses the spare resources of the P1 in the next cycle, so that the user equipment does not need to continue to detect low. The vacant resource of the service priority, the user equipment of the A2 level continues to detect the remaining vacant resources to satisfy the pre-configured vacant resource P2 of the A2 priority service, and the user equipment of the A2 level uses the vacant resource of the P2 in the next cycle. , you do not have to continue to detect the vacant resources of its low business priority, and so on to allocate available vacant resources. The user equipment of the high-priority service only needs to detect the vacant resources that meet the high priority in turn, and the user equipment of the lowest-priority service needs to detect the remaining resources after all the resources satisfy the user requirements higher than the service level (P6). = All detected vacant resources - P1-P2-P3-P4-P5) are used by the user equipment of the lowest priority service. If there is no remaining, the detection will continue in the next cycle until the system resource occupancy rate is not high to meet the low priority. The user equipment of the level service is accessed in the next cycle.

In summary, the present embodiment solves the problem of interference between the communication between the devices and the communication in the original network by scheduling physical resources for communication between the devices, realizing direct communication between the user devices, and improving spectrum efficiency.

In addition, as shown in FIG. 8 , the embodiment of the present invention further provides a resource selection apparatus, which is applied to a UE, and includes: an obtaining module, configured to acquire resource pre-configuration information; and a processing module, configured to perform resource pre-configuration information and a service type. Determining the available spare resources; wherein the resource pre-configuration information includes at least the amount of the spare resources and the priority configuration information. In an actual application, the acquisition module is, for example, a communication element having a function of receiving and detecting information such as a receiver, and the processing module is, for example, a communication element having information processing processing capability such as a processor.

In an embodiment, the priority configuration information includes: an occupation ratio of the pre-configured spare resource amount corresponding to the different priority services, and a vacant resource selection manner of the user equipment according to the different priority services.

The user equipment converts the occupation ratio of the pre-configured spare resource amount corresponding to the different priority services into the simplest integer ratio with the same denominator;

When the user equipment detects that the multiple of the sum of the numerators of the simplest integer ratios of the pre-configured spare resources corresponding to the different priority services is less than or equal to the detected amount of the vacant resources, the pre-configured spare resources corresponding to the services of different priorities The occupancy ratio, the first value, and the second value determine the amount of the pre-configured spare resources corresponding to the different priority services, and the user equipment selects from the detected vacant resources according to the priority of the service type. a pre-configured spare resource quantity corresponding to the service priority of the user equipment, where the first value is a rounded value of a ratio of the detected vacant resource quantity to the sum of the simplest integer ratio molecules of the pre-configured vacant resource quantity, The second value is the remainder of the ratio of the detected amount of vacant resources to the sum of the simplest integers of the pre-configured vacant resources.

In an embodiment, the priority configuration information includes: a resource pool corresponding to different priority services, a preset ratio of the amount of idle resources in each resource pool and a total resource amount of the corresponding resource pool, and different user equipments. The method of selecting the spare resources for the priority service.

When the ratio of the amount of the idle resource in the resource pool corresponding to the priority of the user equipment to the total resource amount of the resource pool is greater than or equal to the preset ratio of the resource pool, the user equipment selects the vacant resource from the resource pool;

When the ratio of the amount of the idle resource in the resource pool corresponding to the priority of the user equipment to the total resource of the resource pool is less than the preset ratio of the resource pool, the user equipment has a lower priority from the resource pool and the service priority. The resource pool of the resource pool is selected from the resource pool, and the ratio of the resource pool and the amount of the vacant resource in the resource pool of the resource pool to the total resource amount of the resource pool is greater than or equal to the preset ratio.

In an embodiment, the priority configuration information includes: a resource pool corresponding to different priority services, a preset collision probability of each resource pool, and a vacant resource selection manner of the user equipment according to different priority services.

When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is less than or equal to the preset collision probability of the resource pool, the user equipment selects the spare resource from the resource pool corresponding to the priority of the service; The collision probability of the resource pool is equal to the reciprocal of the vacant resource amount of the resource pool detected by the user equipment;

When a user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is greater than the preset collision probability of the resource pool, the user equipment has a lower priority than the resource pool and the service priority corresponding to the priority of the service. The vacant resource is selected in the resource pool of the pool, wherein the resource pool detected by the user equipment and the reciprocal of the vacant resource in the resource pool whose service priority is lower than the resource pool are less than or equal to the preset collision probability.

In addition, the processing flow of the above device is the same as that described above, and thus will not be described herein.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The basic principles and main features of the present application and the advantages of the present application are shown and described above. The present application is not limited by the above-described embodiments, and the above-described embodiments and the description are only for explaining the principles of the present application, and various changes and modifications may be made to the present application without departing from the spirit and scope of the application. And improvements are within the scope of the claimed invention.

Industrial applicability

The embodiment of the present application provides a resource selection method and device, which performs resource selection by using a priority-based method, dynamically adjusts resource selection according to priority configuration information, and improves resource utilization.

Claims

A resource selection method, including:

The user equipment UE acquires resource pre-configuration information;

Determining, by the UE, the available spare resources according to the resource pre-configuration information and the service type;

The resource pre-configuration information includes at least a vacant resource quantity and priority configuration information.
The method of claim 1, wherein the priority configuration information comprises: a pre-configured spare resource amount corresponding to different priority services and a vacant resource selection manner of the user equipment according to different priority services.
The method of claim 2, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

The user equipment selects a pre-configured spare resource quantity corresponding to the service priority of the user equipment from the detected vacant resources according to the priority of the service.
The method of claim 1, wherein the priority configuration information comprises: an occupancy ratio of the pre-configured spare resource amount corresponding to the different priority services and a vacant resource selection manner of the user equipment according to the different priority services.
The method of claim 4, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

The user equipment converts the occupation ratio of the pre-configured spare resource amount corresponding to the different priority services into the simplest integer ratio with the same denominator;

When the multiple of the sum of the numerators of the simplest integer ratios of the pre-configured spare resources corresponding to the different priority services is less than or equal to the detected amount of the vacant resources, the occupancy ratio of the pre-configured spare resources corresponding to the different priority services, The first value and the second value determine the amount of the pre-configured vacant resources corresponding to the different priority services, and the user equipment selects the service priority of the user equipment from the detected vacant resources according to the service priority from high to low. Corresponding pre-configured vacant resource quantity, wherein the first value is a rounded value of a ratio of the detected vacant resource quantity to a sum of the simplest integer ratio molecules of the pre-configured vacant resource quantity, and the second value is detection The remainder of the ratio of the amount of vacant resources to the sum of the simplest integers of the pre-configured vacant resources.
The method according to claim 3 or 5, wherein the user equipment selects a pre-configured spare resource corresponding to the service priority of the user equipment from the detected amount of spare resources according to the priority of the service from high to low. The quantity includes: selecting according to the amount of vacant resources detected from high frequency to low frequency, or selecting according to the amount of vacant resources detected from low frequency to high frequency.
The method of claim 1, wherein the priority configuration information comprises: a resource pool corresponding to different priority services, a preset ratio of the amount of idle resources in each resource pool and the total resource amount of the corresponding resource pool. And the manner in which the user equipment selects the available resources according to different priority services.
The method of claim 7, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is greater than or equal to the preset ratio of the resource pool, the user equipment selects the vacant resource from the resource pool;

When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is less than the preset ratio of the resource pool, the user equipment has a lower priority from the resource pool and the service priority. The resource pool of the resource pool is selected from the resource pool, and the ratio of the resource pool and the resource resource in the resource pool of the resource pool to the total resource amount of the resource pool is greater than or equal to the preset ratio. .
The method of claim 1, wherein the priority configuration information comprises: a resource pool corresponding to different priority services, a preset collision probability of each resource pool, and a vacant resource selection of the user equipment according to different priority services. the way.
The method of claim 9, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is less than or equal to the preset collision probability of the resource pool, the user equipment selects the spare resource from the resource pool corresponding to the priority of the service, where the The collision probability of the resource pool is equal to the reciprocal of the amount of vacant resources of the resource pool detected by the user equipment;

When the user equipment detects that the collision probability of the resource pool corresponding to the service priority of the user equipment is greater than the preset collision probability of the resource pool, the user equipment selects the resource pool corresponding to the priority of the service. The vacant resource is selected in the resource pool of the resource pool, and the reciprocal of the resource pool and the QoS resource in the resource pool of the resource pool is lower than or equal to the pre-requisite. Set the probability of collision.
The method according to claim 8 or 10, wherein the user equipment selects the spare resource for the service priority lower than the resource pool of the resource pool by the following manner: the slave service priority is lower than all resources of the resource pool. The pool is selected in the order of the resource pools corresponding to the service priorities from high to low, or sequentially according to the resource pools whose service priorities are from low to high.
A resource selection device is applied to user equipment, including:

Obtain a module, which is set to obtain resource pre-configuration information;

a processing module, configured to determine, according to the resource pre-configuration information and a service type, a spare resource that can be used;

The resource pre-configuration information includes at least a vacant resource quantity and priority configuration information.
The device of claim 12, wherein the priority configuration information comprises: a pre-configured resource amount corresponding to different priority services and a vacant resource selection manner of the user equipment according to different priority services.
The apparatus according to claim 13, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

The user equipment selects a pre-configured spare resource quantity corresponding to the service priority of the user equipment from the detected vacant resources according to the priority of the service.
The apparatus according to claim 12, wherein the priority configuration information comprises: an occupancy ratio of the pre-configured spare resource amount corresponding to the different priority services, and a vacant resource selection manner of the user equipment according to the different priority services.
The apparatus according to claim 15, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

The user equipment converts the occupation ratio of the pre-configured spare resource amount corresponding to the different priority services into the simplest integer ratio with the same denominator;

When the multiple of the sum of the numerators of the simplest integer ratios of the pre-configured spare resources corresponding to the different priority services is less than or equal to the detected amount of the vacant resources, the pre-configuration according to the different priority services The occupancy ratio of the vacant resources, the first value, and the second value determine the amount of the pre-configured vacant resources corresponding to the services of different priorities, and the user equipment selects from the detected vacant resources according to the service priority from high to low. The pre-configured spare resource quantity corresponding to the service priority of the user equipment, where the first value is a rounded value of a ratio of the detected vacant resource quantity to a sum of the simplest integer ratio numerator of the pre-configured vacant resource quantity, The second value is a remainder of the ratio of the detected amount of vacant resources to the sum of the simplest integers of the pre-configured vacant resources.
The device according to claim 14 or 16, wherein the user equipment selects a pre-configured spare resource corresponding to the service priority of the user equipment from the detected amount of spare resources according to the priority of the service from high to low. The quantity includes: selecting according to the amount of vacant resources detected from high frequency to low frequency, or selecting according to the amount of vacant resources detected from low frequency to high frequency.
The device according to claim 12, wherein the priority configuration information comprises: a resource pool corresponding to different priority services, a preset ratio of the amount of idle resources in each resource pool and the total resource amount of the corresponding resource pool. And the manner in which the user equipment selects the available resources according to different priority services.
The device of claim 18, wherein the method for selecting a vacant resource of the user equipment according to different priority services comprises:

When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is greater than or equal to the preset ratio of the resource pool, the user equipment selects the vacant resource from the resource pool;

When the ratio of the amount of the idle resource in the resource pool corresponding to the service priority of the user equipment to the total resource amount of the resource pool is less than the preset ratio of the resource pool, the user equipment has a lower priority from the resource pool and the service priority. The resource pool of the resource pool is selected from the resource pool, and the ratio of the resource pool and the resource resource in the resource pool of the resource pool to the total resource amount of the resource pool is greater than or equal to the preset ratio. .
The device of claim 12, wherein the priority configuration information comprises: a resource pool corresponding to different priority services, a preset collision probability of each resource pool, and a vacant resource selection of the user equipment according to different priority services. the way.
The apparatus according to claim 20, wherein the vacant resource selection manner of the user equipment according to different priority services comprises:

When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is less than or equal to the preset collision probability of the resource pool, the user equipment selects the spare resource from the resource pool corresponding to the priority of the service, where the The collision probability of the resource pool is equal to the reciprocal of the amount of vacant resources of the resource pool detected by the user equipment;

When the user equipment detects that the collision probability of the resource pool corresponding to the priority of the service is greater than the preset collision probability of the resource pool, the user equipment has a lower priority than the resource pool and the service priority corresponding to the priority of the service. The vacant resource is selected in the resource pool, wherein the resource pool detected by the user equipment and the reciprocal of the vacant resource in the resource pool whose service priority is lower than the resource pool are less than or equal to the preset collision probability.
The device according to claim 19 or 21, wherein the user equipment selects the vacant resource for the service resource whose priority is lower than the resource pool of the resource pool: the service priority is lower than all the resources of the resource pool. The pool is selected in the order of the resource pools corresponding to the service priorities from high to low, or sequentially according to the resource pools whose service priorities are from low to high.