Method for spectrum resource allocation between cellular users and d2d users in the same cell

Abstract

The present invention relates to a relay-based in-cluster D2D multicast method, the method comprising: S1: partitioning, by a base station, users which have a data sharing demand and a small link loss between each other to one cluster; S2: notifying, by the base station, data distribution in a cluster by means of multicast to each user, and controlling terminal detection link information in each cluster; S3: choosing, by a terminal node in the cluster, an information multicast order based on the demand amount of each data packet, choosing a corresponding sending end based on the occupancy rate of each data packet of each user, and exchanging sharing data in a distributed multicast manner; and S4: acquiring, by a user which has a poor sending end link quality, the sharing data by means of relay retransmission. Provided is an in-cluster information sharing approach of relay assisted multicast communications, which overcomes the effect of a minority of large fading links on transmission rate in a multicast process, and realizes optimization of network performance.

Description

technical field [0001] The invention relates to the field of wireless mobile communication, and provides a method for allocating frequency spectrum resources between cellular users and D2D users in the same cell. Background technique [0002] In recent years, with the increase of mobile devices and applications, a large number of multimedia services have emerged. However, at present, the utilization rate of spectrum resources in the cellular network is not high, that is to say, among the allocated spectrum resources, a large proportion of resources are in an idle state, which causes a great degree of waste of spectrum resources. Device-to-Device (D2D) communication aims at this problem, so that communication can be directly established between users in the same cell, and the information transmission process can be realized by multiplexing cellular spectrum resources. The assisted use of the D2D network under the cellular network not only reduces the transmission delay, impr...

AI Technical Summary

Problems solved by technology

Such an approach may cause cellular users to occupy most of the spectrum resources, even exceeding their own transmission needs; and it is difficult for D2D users to achieve high efficiency due to insufficient allocation of spectrum resources, especially when the user density is high. There is still a lot of room for improvement in the utilization of spectrum resources in D2D communication

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