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Improved Method of MAC Protocol in Distributed Antenna System Based on IEEE 802.11

A distributed antenna and protocol technology, applied in transmission systems, electrical components, etc., can solve problems such as mutual interference between RAUs, and achieve the effect of improving throughput

Active Publication Date: 2019-06-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The technical problem to be solved in the present invention is: solve the problem of mutual interference between RAUs in DAS from the perspective of protocol, and provide a PCF improvement method for improving the throughput of edge nodes

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  • Improved Method of MAC Protocol in Distributed Antenna System Based on IEEE 802.11
  • Improved Method of MAC Protocol in Distributed Antenna System Based on IEEE 802.11
  • Improved Method of MAC Protocol in Distributed Antenna System Based on IEEE 802.11

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 Shown is a schematic flow chart of the present invention, based on IEEE 802.11 distributed antenna system MAC protocol improvement method, comprising the following steps:

[0022] Step 1: Establish a network topology diagram;

[0023] The second step: divide the priority and node type of the basic service set (basic service set, referred to as BSS); the priority of BSS is divided into high and low, according to each RAU (remote antenna unit, referred to as RAU ) to determine the relative position; first set the priority of a BSS covered by a certain RAU to be high, which is recorded as a high priority BSS, and then the priority of the BSS covered by an RAU adjacent to its geographic location is low, which is recorded as a low priority BSS ; All BSS will be processed in units of high and low pairs, if the total number...

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Abstract

The invention belongs to the technical field of a wireless communication network and relates to a distributed antenna system MAC protocol improvement method based on IEEE802.11. Under a point coordination function PCF mechanism, conflicts among RAU coverage areas are reduced. The method comprises the steps of S1, establishing a network topology structure diagram; S2, dividing priorities and node types of basic service sets, wherein the BSSs are divided into high priority BSSs and low priority BSSs, interior nodes of the high priority BSSs are divided into edge nodes and non-edge nodes, and the interior nodes of the low priority BSSs are divided into non-conflict nodes and conflict nodes; S3, establishing a polling list according to the network topology structure diagram and marking the nodes in the polling list, the high priority BSSs carry out conventional polling according to the polling list; and S4, the low priority BSSs adjust own polling processes according to the polling processes of the high priority BSSs. According to the method, under the condition of sacrificing the time delay performance in a relatively low degree, the total retransmission performance of the system is reduced, and the edge node throughput is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and relates to an IEEE 802.11 midpoint coordination function (point Coordination function, referred to as PCF) MAC protocol improvement method. Background technique [0002] The MAC protocol provides a solution for the system to schedule wireless resources, so that as many users as possible can obtain system services in a relatively short period of time. In DAS, the use of RAU greatly improves the spectrum efficiency and energy efficiency of the network, and also increases the difficulty of system MAC protocol design. According to the published literature, a lot of researches have been done on DAS at home and abroad, but most of the research work is aimed at the optimization of the physical layer and the influence of the transmission delay introduced by the optical fiber on the system throughput, and there is a lack of specific research on the MAC protocol. The reason fo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L69/03
Inventor 黄圣春陈玓玏赵海涛魏急波周力马东堂
Owner NAT UNIV OF DEFENSE TECH
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