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Resource allocation algorithm of D2D communication in cellular network

A resource allocation and cellular network technology, applied in wireless communication, machine-to-machine/machine-type communication services, sustainable communication technology, etc., can solve problems such as poor energy efficiency

Active Publication Date: 2018-11-30
CHONGQING UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the technical problem of improving energy efficiency in the prior art

Method used

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  • Resource allocation algorithm of D2D communication in cellular network
  • Resource allocation algorithm of D2D communication in cellular network
  • Resource allocation algorithm of D2D communication in cellular network

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Embodiment 1

[0066] In this embodiment, a resource allocation algorithm for D2D communication in a cellular network is provided, such as Figure 8 , including: step 1, establishing a cellular network D2D communication model, defining the transmit power of cellular user n as The transmit power of D2D user m is D2D user m multiplexes the channel resources of cellular user n, and defines constraints. The constraints include: the channel resource of one cellular user is only multiplexed by one D2D user, one D2D user only multiplexes one channel resource of cellular user, the transmit power of cellular user and The transmit power of D2D users must meet the maximum power limit requirements, and the signal-to-interference-noise ratio of cellular users and the signal-to-interference-noise ratio of D2D users must not be less than the minimum signal-to-interference-noise ratio requirements;

[0067] Step 2: Use the improved power control algorithm to perform power control, and remove unqualified ...

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Abstract

The invention relates to a resource allocation algorithm of D2D communication in a cellular network for solving the technical problem of improving the poor energy efficiency. The problem is well solved by the following technical scheme: establishing a cellular network D2D communication model, and defining constraint conditions; performing power control based on an improved power control algorithm,and eliminating users not meeting the condition from a reusable set, comprising: calculating a power allocation closed expression (the formula is shown in the specification) to serve as an optimal transmitting power combination satisfying the constraint conditions, wherein (the formula is shown in the specification) represents the optimal transmitting power of a D2D user m, and (the formula is shown in the specification) represents the optimal transmitting power of a cellular user n; and obtaining an optimal channel pair by using an improved matching algorithm, and obtaining an optical channel allocation scheme satisfying the constraint conditions. The resource allocation algorithm can be applied to the D2D communication.

Description

technical field [0001] The present invention relates to the field of D2D communication, in particular to a resource allocation algorithm for D2D communication in a cellular network. Background technique [0002] As one of the key technologies of 5G, device-to-device (Device-to-Device, D2D) communication is a short-distance communication technology that directly performs data communication without forwarding by base stations. It has broad application prospects. However, when D2D communication is introduced into the cellular network, the multiplexing of cellular user channels will cause serious interference, resulting in system performance degradation and affecting the battery life of user equipment. Therefore, how to reduce interference and reduce energy consumption while multiplexing channels has become one of the key issues in current research. [0003] In the existing resource allocation schemes based on energy efficiency, the resource allocation algorithm aimed at optim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/70H04B17/382H04B17/391H04W72/10H04W72/04
CPCH04B17/382H04B17/3912H04W4/70H04W72/0473H04W72/56Y02D30/70
Inventor 吴玉成刘思含甘海华翟莎莎刘小翠
Owner CHONGQING UNIV
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