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A qos-based channel allocation and power control method in d2d network

A channel allocation and power control technology, applied in the field of resource allocation, can solve the problem of low resource utilization efficiency, achieve the effect of rational energy allocation optimization, improve spectrum utilization, and increase capacity

Active Publication Date: 2019-03-12
NANJING UNIV OF POSTS & TELECOMM
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  • Claims
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Problems solved by technology

This centralized working method facilitates the management and control of resource interference, but the efficiency of resource utilization is low

Method used

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  • A qos-based channel allocation and power control method in d2d network
  • A qos-based channel allocation and power control method in d2d network
  • A qos-based channel allocation and power control method in d2d network

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Embodiment Construction

[0027] Below in conjunction with embodiment and accompanying drawing, the technical solution of the invention is described in detail:

[0028] The D2D communication model of the present invention sharing cellular system uplink resources is as attached figure 2 As shown, it consists of a base station located in the center of the cell, M cellular users randomly distributed in the cell and N pairs of D2D users, and respectively use C={1,2,..,M} and D={1,2 ,...,N} represent the cellular user set and the D2D user set. Define an array including M×K variables and N×K variables, which are used to store the transmission power of cellular users and D2D users respectively, and initialize the array P C =O M×K and P D =O N×K . Cellular user i (1≤i≤M) occupies channel k (1≤k≤K) for communication, and D2D users reuse K channels that have been allocated to cellular users, where K represents the number of available channels, and S is defined as D2D user multiplex Use the cellular user c...

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Abstract

The present invention is a channel allocation and power control method based on user QoS. The specific steps are as follows: build a system model based on D2D user capacity maximization, and select candidate cells that meet the requirements for D2D users according to the minimum signal-to-interference-noise ratio requirements of D2D users. User set; under the condition of guaranteeing the QoS requirements of cellular users and the limited user power, the Lagrangian multiplier method is used to optimize the transmission power of cellular users and D2D users; and then calculate the capacity of all D2D users according to the optimal transmission power of users and Channels are allocated to the maximum capacity of D2D users, enabling D2D communication in cellular networks. This method jointly optimizes the channel allocation and power control of users, allocates the optimal transmission power for each user, and allocates the channel to the D2D user with the largest capacity, thereby reducing the energy loss of cellular users and D2D users, and improving the total capacity of D2D users .

Description

technical field [0001] The invention relates to a resource allocation method, in particular to a channel allocation and power control method based on user QoS, and belongs to the technical field of communication. Background technique [0002] With the rapid development of wireless communication technology, the shortage of spectrum resources has become a challenge for mobile communication. In traditional cellular networks, direct communication between users is not allowed. The communication process is divided into two stages by the transfer of the base station: from the mobile terminal to the base station, that is, the uplink; from the base station to the mobile terminal, that is, the downlink. This centralized working mode facilitates the management and control of resource interference, but the resource utilization efficiency is low. In this context, D2D communication technology came into being. [0003] D2D communication is a new technology that allows short-distance ter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04W52/26H04W72/08H04W72/54
CPCH04W52/241H04W52/265H04W72/543
Inventor 朱琦于宝舟朱洪波杨龙祥
Owner NANJING UNIV OF POSTS & TELECOMM
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