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Resource selection method and resource selection device

A resource selection and resource technology, applied in the communication field, can solve the problems of resource collision, resource waste, and low access probability of D2DRelay UE, and achieve the effect of reducing resource collision and improving access probability.

Inactive Publication Date: 2017-03-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the Release 13 (R13) version, business requirements such as data priority and relay (Relay) have been added. The free competition and selection of resources in the existing R12 version cannot meet the situation of different priorities.
Taking the equipment-to-device relay (UE-to-UE relay) scenario as an example, the priority of being selected as a relay UE must be higher than that of a normal D2D UE. However, since all user equipments have the same resource preemption probability, D2D Relay Resource collision occurs when UE and D2D UE exist at the same time, and the access probability of out-of-coverage D2D Relay UE is low
However, different resource pool configurations are used to fixedly support different priority services, which will cause a large waste of resources when there are few high-priority services.

Method used

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  • Resource selection method and resource selection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 2 It is a flow chart of the resource selection method provided by Embodiment 1 of the present invention. like figure 2 As shown, the resource selection method provided in this embodiment includes:

[0058] Step 101: UE detects free resources in the resource pool;

[0059] Step 102: Determine an area for random resource selection according to resource pre-configuration information.

[0060] The scenario of this embodiment is D2D outdoor coverage, and Remote UE1 and Remote UE2 communicate through the Relay UE. This embodiment will be described in detail below.

[0061] In this embodiment, the resource pool of user equipment with service priority A1 is configured as R1, and the resource pool of user equipment with service priority A2 is configured as R2, that is, the resource pool is divided by frequency division. Priority is higher than A2 business.

[0062] For outdoor coverage scenarios, the priority of data packets selected as Relay UEs is higher than th...

Embodiment 2

[0077] The scenario of this embodiment is an outdoor coverage scenario. Here, the service priority of the Relay UE is higher than that of the D2D UE that needs to communicate. The Relay UE is sent as an A1-level data packet, and other D2Ds are sent as an A2-level data packet. Among them, the A1-level service Priority is higher than A2 service, the resource pool of user equipment with service priority A1 is configured as R1, the resource pool of user equipment with service priority A2 is configured as R2, and the preset collision probability of resource pool R1 is 0.2 , the preset collision probability of resource pool R2 is P2=0.25, wherein, the collision probability is the reciprocal of the amount of free resources in the corresponding resource pool;

[0078] For example, if image 3 As shown, the user equipment of the A1 service listens to the free resource situation in the first cycle, the amount of free resources in the resource pool R1 is K1=5, the amount of free resource...

Embodiment 3

[0084] In this embodiment, resource pools are not divided, only the amount of preconfigured vacant resources that can be used by each priority service (group or data packet) is configured, and the preconfigured vacant resources that can be used by user equipment with high priority service requirements The amount of pre-configured free resources that can be used by user equipment that is greater than the service requirements of low priority.

[0085] For outdoor coverage scenarios, the service priority of the Relay UE is higher than that of the D2D UE that needs to communicate. The data packets of the Relay UE are classified as A1, and the data packets of other D2D UEs are classified as A2. The priority of A1 is higher than that of A2. The pre-configured amount of free resources for the D2D Relay UE is 6, and the amount of pre-configured free resources for the D2D UE is 3, and the D2D Relay UE and the D2D UE use a unified resource pool.

[0086] For the configured resource pool...

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Abstract

The invention discloses a resource selection method and a resource selection device. The method comprises the following steps: UE acquires resource pre-configuration information; and the UE determines available free resources according to the resource pre-configuration information and the service type, wherein the resource pre-configuration information at least includes the quantity of free resources and priority configuration information. By using the resource selection method and the resource selection device disclosed by the invention, priority-based resource selection is realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a resource selection method and device. Background technique [0002] In a cellular system, when there is a service to be transmitted between two user equipments (UE, User Equipment), the service data from user equipment 1 (UE1) to user equipment 2 (UE2) will first be transmitted to the cell where UE1 is located through the air interface The base station (Base Station, or called eNB, or evolved (evolved) eNB), the base station transmits the user data of UE1 to the base station of the cell where UE2 is located through the core network, and the base station then transmits the above user data to UE2 through the air interface. The service data transmission from UE2 to UE1 adopts a similar processing flow. [0003] However, in fact, with the diversification of mobile communication services, for example, social networking, electronic payment, etc. are more and more widely used in wir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/02H04W72/10
CPCH04W72/02H04W72/56H04W72/563
Inventor 王文焕杨瑾黄双红
Owner ZTE CORP
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