A method and device for relay selection based on network coding technology

A network coding and technology technology, applied in the field of wireless communication, which can solve the problems of occupation and decrease of system resource utilization rate, etc.

Active Publication Date: 2020-10-27
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, cooperative relay and forwarding will occupy additional channel resources, resulting in a decrease in system resource utilization, while network coding can improve system throughput

Method used

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  • A method and device for relay selection based on network coding technology
  • A method and device for relay selection based on network coding technology
  • A method and device for relay selection based on network coding technology

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] The deployment mode of the relay selection method in this embodiment is based on the following figure 1 In the shown relay cell model, the base station is located in the center of the cell, and 6 relays are deployed inside the cell, and each relay is located 2R / 3 away from the center on the radius of the cell (R is the radius of the cell). This model can obtain the best relay transmission performance, and each central user and each edge user obtain resource blocks with equal probability, which ensures the fairness of scheduling; the received signal strength of users at the edge is equal, which improves the throughput of the cell edge quantity.

[0045] The schematic diagram of the multiple access relay channel model of the present invention ...

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Abstract

The invention provides a relay selection method and device based on network encoding technology. The method comprises the following steps: firstly, selecting an optimal relay according to communication quality, and then selecting a network encoding way with the minimum interference according to the interference capacity of each network encoding way, thereby guaranteeing the effective transmissionof the information and maximizing the use ratio of the system resource. The selection of the network encoding way with the minimum interference adopts the reinforced learning method, an optimal policyof a dynamic system is learned by sensing environmental state information, the improvement of the policy is acquired by continuously interacting trail-and-error method with the environment, thereby selecting the network encoding way with the optimal communication quality and minimum interference for the user.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a network coding technology-based relay selection method and device suitable for wireless networks. Background technique [0002] With the development of the information age, the demand for network coverage is getting stronger and stronger. Introducing relay base stations into the traditional cellular network architecture, and using multi-hop links, mobile terminals can connect to base stations through one or more relay stations, effectively enhancing the coverage of wireless networks and improving throughput. [0003] The basic principle of network coding technology is to linearly or nonlinearly process the information received on each channel on each node in the network, and then forward it to the downstream node, and the intermediate node plays the role of encoder or signal processor . The way traditional communication network nodes transmit data is st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/336H04B17/391H04L1/00H04W40/04H04W40/16
CPCH04L1/0009H04W40/04H04W40/16H04B17/336H04B17/391
Inventor 黄联芬饶慧婷高志斌赵毅峰郭杰锋
Owner XIAMEN UNIV
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