The High Efficient UPMA+ + Protocol with Improved Throughput

LIU Jing; LI Jian-dong; ZHOU Lei; ZHANG Guang-hui

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The High Efficient UPMA+ + Protocol with Improved Throughput

更新时间：2025-07-16

- The High Efficient UPMA+ + Protocol with Improved Throughput
- Acta Electronica Sinica Vol. 33, Issue 4, Pages: 683-687(2005)
- 作者机构：
  
  西安电子科技大学ISN国家重点实验室信息科学研究所宽带无线通信实验室,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN915.04
- Published Online：25 April 2005，
  
  Published：2005
- 稿件说明：
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LIU Jing, LI Jian-dong, ZHOU Lei, et al. The High Efficient UPMA+ + Protocol with Improved Throughput[J]. Acta Electronica Sinica, 2005, 33(4): 683-687.
DOI：

LIU Jing, LI Jian-dong, ZHOU Lei, et al. The High Efficient UPMA+ + Protocol with Improved Throughput[J]. Acta Electronica Sinica, 2005, 33(4): 683-687. DOI：

摘要

本文提出了基于有效竞争接入、高效无冲突传输的多址接入协议—UPMA+ +.该协议采用了有效的冲突分解策略和及时重获信道资源的方法

克服了UPMA(根据用户数目妥善安排传输的多址接入)协议中的开销;通过自适应调整竞争接入周期长度和限制无冲突服务周期长度的方法

很好地解决了激活节点快速接入信道和传输节点尽快传输分组之间的矛盾

从而提高了协议的吞吐量.本文还应用排队论的方法对UPMA+ +协议的性能进行了理论分析

计算结果与仿真结果基本一致.

Abstract

Based on the effective contention access and polling transmission

a novel multiple access protocol—UPMA+ + protocol is proposed.It overcomes the overhead in UPMA (User-dependent Perfect-scheduling Multiple Access) protocol by using collision resolution method and regaining channel resource in time.By employing the limited polling period and adjusting the length of contention access period adaptively

it resolves the conflicts between active nodes and transmission nodes

in which active nodes expect to access the channel quickly and transmission nodes want to transmit packet as soon as possible

thus improving the throughput greatly.Theoretical analytical is given through the queuing theory

and its numerical result is agreed with the simulated result on the whole.

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