A Multiple Access Control Protocol with Multiple Reservation Information Relay and Cooperative Channel Reservation

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A Multiple Access Control Protocol with Multiple Reservation Information Relay and Cooperative Channel Reservation

更新时间：2025-05-08

- A Multiple Access Control Protocol with Multiple Reservation Information Relay and Cooperative Channel Reservation
- Vol. 46, Issue 8, Pages: 59-64(2012)
- 作者机构：
  
  西北工业大学电子信息学院,西安,710129
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP393
- Online First：10 August 2012，
  
  Published：2012
- 稿件说明：
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A Multiple Access Control Protocol with Multiple Reservation Information Relay and Cooperative Channel Reservation[J]. 2012, 46(8): 59-64.
DOI：

A Multiple Access Control Protocol with Multiple Reservation Information Relay and Cooperative Channel Reservation[J]. 2012, 46(8): 59-64. DOI：

摘要

针对Ad Hoc网络中实时业务在背景业务繁重时信道接入效率低的问题

提出一种邻节点协作转发信道预约信息(CRI)的多址接入协议(M-CCRM). 节点在发送数据分组前

选取多条CRI作为其数据开销

在控制该开销不超过预先设定门限的基础上

将这些CRI随分组一起发送; 收到数据分组的邻节点提取其携带的CRI

记录下那些自己位于其预约范围内的CRI

避免在这些CRI的预约时段内接入信道. M-CCRM协议扩大了CRI的覆盖范围

解决了由于信道衰落和(或)分组冲突导致的CRI丢失问题

提高了实时业务的信道接入效率. 仿真结果表明

当开销门限为0.02时

M-CCRM协议的实时业务发送失败概率比基本信道预约协议和基本协作预约协议分别降低了31%和20%.

Abstract

A new multiple access control(MAC)protocol called M-CCRM is proposed to solve the problem of poor channel access efficiency for real-time traffic in Ad Hoc networks with heavy background traffic loads. The proposed protocol bases on the idea of distributing channel reservation information(CRI)through cooperative relays of neighboring nodes. Before a node transmits a packet

multiple CRIs are carefully selected and piggy-backed with the packet so as to limit the corresponding overheads caused by carrying CRIs to be lower than a predefined threshold. By overhearing the packet

neighboring nodes record some of the CRIs as long as they are within the channel reservation distance of the CRIs

and then avoid to access the channel while the traffic indicated by the CRIs are carrying on. The proposed MAC protocol enlarges the coverage area of the announced CRIs

and avoids the possible missing of CRIs caused by channel fading and(or)packet collisions. Therefore

the channel access efficiency for real-time traffic is significantly increased. Simulations and comparisons with the basic channel reservation protocol and the basic cooperative channel reservation protocol show that when the overheads caused by carrying CRIs are limited to be lower than 2%

the transmission failure rates of real-time traffic of the proposed protocol are reduced by 31% and 20%

respectively.

关键词

Keywords

references

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