D2D communication resource scheduling method and D2D communication resource scheduling device

Abstract

The invention discloses a D2D communication resource scheduling method and a D2D communication resource scheduling device, which are used to solve a resource scheduling unfairness problem, and are used to reduce signaling overheads. The D2D communication resource scheduling method comprises steps that any time slot included in a current scheduling period, a rate gain factor and a service quality factor of every D2D user group are respectively determined, and the rate gain factor is used to represent the rate gain after the multiplexing of the RB of the D2D user groups, and the service qualityfactor is used to represent the demand rate satisfying conditions of the D2D user groups in the current time slot; by aiming at every D2D user group, the scheduling priorities of the D2D user groups are determined according to the rate gain factor and the service quality factor; according to the scheduling priorities of the D2D user groups, first N / n D2D user groups are selected sequentially fromtop to bottom, and N is the number of the to-be-scheduled D2D user groups; the available RB included by the current time slot are assigned to the selected D2D user groups.

Description

technical field [0001] The present invention relates to the field of mobile communication technologies, in particular to a D2D communication resource scheduling method and device. Background technique [0002] The D2D (Device-to-Device, device-to-device) communication technology is a technology that allows terminals to communicate directly by multiplexing cell resources under the control of an LTE (Long Term Evolution, long-term evolution) system. D2D communication technology is one of the foreground technologies of mobile cellular networks, which can be applied to mobile cellular networks to improve resource utilization and network capacity. In D2D communication, the communication data between adjacent mobile terminals does not need to be forwarded by the base station, but under the control of the base station, the spectrum resources of the cellular network are allowed to directly establish a local link communication, so as to reduce the load bottleneck of the relay forward...

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, in scenarios where there are more D2D users than cellular users, such as shopping malls and stadiums, under the existing resource allocation model, the number of RBs that can be reused by D2D users is insufficient, which will cause The problem of resource scarcity makes some D2D users unable to obtain resources; and the allocation method of maximizing system throughput makes D2D users with better channel gain have higher scheduling priority, while users located in weak coverage areas at the edge are due to channel gain Poor, the probability of obtaining resources is small, resulting in the problem of unfair resource scheduling; moreover, the existing resource model summarizes the resource scheduling problem as a combinatorial optimization problem, and the centralized solution by the base station has high complexity. When the user When the number grows exponentially, the real-time performance of the resource scheduling and allocation process cannot be guaranteed

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