Hidden Terminals in Dual Busy Tone Multiple Access and an Improved Solution

张克旺; 张德运; 潘煜

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Hidden Terminals in Dual Busy Tone Multiple Access and an Improved Solution

更新时间：2025-12-08

- Hidden Terminals in Dual Busy Tone Multiple Access and an Improved Solution
- Vol. 42, Issue 12, Pages: 1459-1463(2008)
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP393
- Online First：10 December 2008，
  
  Published：2008
- 稿件说明：
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张克旺, 张德运, 潘煜. Hidden Terminals in Dual Busy Tone Multiple Access and an Improved Solution[J]. 2008, 42(12): 1459-1463.
DOI：

张克旺, 张德运, 潘煜. Hidden Terminals in Dual Busy Tone Multiple Access and an Improved Solution[J]. 2008, 42(12): 1459-1463. DOI：

摘要

针对双忙音媒体接入(DBTMA)协议只能防止发送距离范围内隐藏节点的问题

提出了一种增强的DBTMA改进(EDBTMA)协议

以彻底消除大规模ad hoc网络中的隐藏节点问题. EDBTMA协议特点有二

一是采用了双收发器结构

其中的一个物理信道(数据信道)为高带宽信道

可利用现有802.11a/g无线设备

二是采用了忙音自适应功率控制机制

这样接收节点根据发送节点的信号强度可动态调整忙音的发射功率

以完全覆盖接收节点周围所有的隐藏节点

并在接收数据的过程中保证接收节点不受隐藏节点的干涉.仿真结果表明

在改进协议下的网络吞吐量平均提高了48%.

Abstract

DBTMA(dual busy tone multiple access)protocol is designed to solve both hidden and exposed terminal problems

but hidden terminals outside the transmission range of the receiver are out of control in the protocol. An enhanced protocol named EDBTMA is proposed

which can eliminate hidden terminals in large-scale ad hoc network. There are two key enhancements in EDBTMA different from DBTMA. Firstly

the dual transceiver is adopted in EDBTMA and the 802.11a/g device is used for high-speed data channel. Secondly

the adaptive busy-tone power control scheme is used in EDBTMA. The receiver adjusts the transmission power of busy-tone according to received signal strength of the sender. All hidden terminals are covered by the busy-tone and no collisions occur during the reception of data packet. Simulation results show that EDBTMA solves the hidden terminals problem better than DBTMA and achieves 48% additional network throughput.

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references

HEKMAT R. Ad-hoc networks: fundamental properties and network topologies [M]. Berlin, Germany: Springer Press, 2006.

ARUNA J, SYLVIE P, AREK D, et al. Hidden vs. exposed terminal problem in ad hoc networks [C]∥Proceedings of the Australian Telecommunications, Networks and Architecture Conference. Sydney,Australia: ATNAC, 2004: 52-56.

HAAS Z J, DENG Jing. Dual busy tone multiple access(DBTMA): a multiple access control scheme for ad hoc networks [J]. IEEE Trans on Communications, 2002,50(6): 975-985.

DAVID T, PRAMOD V. Fundamentals of wireless communication [M]. Cambridge, UK: Cambridge University Press, 2005:49-55.

XU Kaixin, GERLA M, BAE S. How effective is the IEEE 802.11 RTS/CTS handshake in ad hoc networks?[C]∥IEEE Global Communications Conference. Piscataway, NJ, USA: IEEE Press, 2002:72-76.

ISI of USC. The network simulator ns-2 [EB/OL]. [2006-08-10]. http:∥www.isi.edu/nsnam/ns/index.html.

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