A resource allocation method in device-to-device communication

Abstract

The present application discloses a resource allocation method in device-to-device communication, which includes: A. Defining periodic detection areas and conflict processing areas in the resource pool of user equipment UE. The conflict processing area is in time sequence with the detection area. Adjacent and located behind the detection area; B. The UE detects whether there are available time-frequency resources on the channel in the detection area. If so, it receives and sends conflict processing signals in the conflict processing area according to the pre-agreed mode, and continues to perform step C. , otherwise enter the next detection area and repeat step B; C. When the UE receives the conflict processing signal, detect whether there are conflict processing signals of other UEs in the time-frequency resource. If a conflict processing signal is detected, the UE gives up the If the available time-frequency resources are available, enter the next detection area and return to step B; otherwise, the UE performs device-to-device communication on the available time-frequency resources. This application solution can reduce the probability of resource conflicts.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a resource allocation method in device-to-device communication. Background technique [0002] In the existing LTE system, the data transmission between two user equipments (UEs) is realized through the transfer of the network side. The UE at the sending end first sends the communication data to the network side, and then the network side sends the data to the network side. forwarded to the receiving end UE. Even if two UEs that are close to each other want to communicate, the communication data must be transmitted by the network side before being sent to the other party. This brings about a decrease in network resource utilization efficiency and an increase in control signaling. The introduction of device-to-device (D2D, Device to Device) communication technology is aimed at the application scenario where the distance between the sending end UE and ...

AI Technical Summary

Problems solved by technology

[0004] A potential conflict situation brought about by D2D communication technology is: due to distributed transmission, there is no interactive information between UEs. When two transmitting UEs choose the same resource location and think that the resource is idle, they cannot find each other, so it may Two UEs appear to transmit data on the same time-frequency resource, resulting in a conflict

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