Resource allocation method and device in v2v scene

Abstract

The present invention provides a method and device for resource allocation in a V2V scenario. The method includes: after determining that the user equipment UE supports V2V services, allocate at least one time-domain resource of a semi-static resource to the UE through a first RRC signaling message; After receiving the resource allocation request sent by the UE, determine whether the UE has allocated corresponding time domain resources; if so, according to the size of the data packet and the transmission period of the service to be transmitted by the UE, allocate it to the UE through the medium access control unit MAC CE The frequency domain resources of the corresponding semi-static resources, if not, allocate at least one time domain resource of semi-static resources to the UE through the second RRC signaling message, and at the same time, according to the packet size and transmission period of the service to be transmitted by the UE, through the media interface The access control unit MAC CE allocates frequency domain resources corresponding to the semi-static resources for the UE, and activates the semi-static resources through the MAC CE. The present invention effectively realizes the semi-static resource allocation in the V2V scene.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a resource allocation method and device in a V2V scene. Background technique [0002] V2V service is a communication service that can monitor the speed and position of other vehicles on the street, which cannot be opened to other drivers, and can automatically predict whether there will be a possible collision ahead of the vehicle on the road. . [0003] The CAM in the V2V service is a periodic broadcast service, wherein CAM is an information transmission protocol for data exchange between intelligent transportation application stations defined by European standards. Designing a semi-static resource allocation scheme for periodic services can reduce signaling overhead. During the V2V transmission process controlled by the eNB, the eNB can configure semi-static resources for the vehicle through the Uu interface. The traditional semi-persistent scheduling re...

AI Technical Summary

Problems solved by technology

Since DCI extension in the prior art is difficult to include multiple semi-static service activation commands at the same time, multiple DCI commands are required for multiple semi-static scheduling, and the reliability of SPS resource allocation needs to be fed back to the eNB for confirmation, which will increase the delay At the same time, once the user service changes, the resource allocation size needs to be changed. If only one SPS is modified, there will be deviations between the eNB and the UE for other SPS information. If multiple SPSs are modified at the same time, resources will be wasted. Latency increases

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