A slotted floor acquisition multiple access based Mac protocol for underwater acoustic networks with Rts competition*

Liang-fang Qian; Zhang Sen-lin; Liu Mei-qin

doi:10.1631/FITEE.1400187

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A slotted floor acquisition multiple access based Mac protocol for underwater acoustic networks with Rts competition*

Computer & Automation | Updated：2022-06-06

- A slotted floor acquisition multiple access based Mac protocol for underwater acoustic networks with Rts competition*
- 基于RTS竞争机制的声通信网络slotted-FAMA协议研究
- Frontiers of Information Technology & Electronic Engineering Vol. 16, Issue 3, Pages: 217-226(2015)
- Affiliations：
- Author bio：
  
  ‡Corresponding Author
- Funds：
- DOI：10.1631/FITEE.1400187
  CLC：
- Received：16 May 2014，
  
  Revised：28-01，
  
  Accepted：05 November 2014，
  
  Published：2015-03
- Accepted：
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Liang-fang Qian, Zhang Sen-lin, Liu Mei-qin. A slotted floor acquisition multiple access based Mac protocol for underwater acoustic networks with Rts competition*[J]. Frontiers of Information Technology & Electronic Engineering, 2015, 16(3): 217-226.
DOI：

Liang-fang Qian, Zhang Sen-lin, Liu Mei-qin. A slotted floor acquisition multiple access based Mac protocol for underwater acoustic networks with Rts competition*[J]. Frontiers of Information Technology & Electronic Engineering, 2015, 16(3): 217-226. DOI： 10.1631/FITEE.1400187.

摘要

目的

针对水声信道特点，设计适用于水下环境的高效节能的水声通信网络MAC层协议。

创新点

在传统slotted-FAMA协议基础上，引入RTS竞争机制，克服多RTS尝试问题，大幅度提高网络吞吐量并降低网络能耗。

方法

首先，讨论水声通信网络slotted-FAMA协议存在的多RTS尝试问题。指出该问题严重制约了网络性能。然后，提出克服该问题的方法，提出新的MAC协议，RC-SFAMA（图3）。该协议在RTS/CTS握手环节中引入RTS竞争机制。当多RTS尝试问题发生时，各节点利用RTS数据包中的C-number进行RTS竞争来争夺信道使用权。竞争获胜的节点可以继续进行有效数据的传输而失败节点则推迟其数据传输以避免冲突产生。通过竞争机制，当多RTS尝试问题发生时，仍有有效数据得以传输并不会造成冲突，从而克服了这一问题，实现网络吞吐量大幅度提高以及网络能耗的降低。

结论

针对slotted-FAMA存在多RTS尝试问题，提出解决办法，提高网络吞吐量并降低网络能耗。

Abstract

Long propagation delay

limited bandwidth

and high bit error rate pose great challenges in media access control (MAC) protocol design for underwater acoustic networks. A MAC protocol called slotted ﬂoor acquisition multiple access (slotted-FAMA) suitable for underwater acoustic networks is proposed and analyzed. This FAMA based protocol adds a time slot mechanism to avoid DATA packet collisions. However

slotted-FAMA is not suitable for dense networks since the multiple request-to-send (RTS) attempts problem in dense networks is serious and greatly limits the network throughput. To overcome this drawback

this paper proposes a slotted-FAMA based MAC protocol for underwater acoustic networks

called RC-SFAMA. RC-SFAMA introduces an RTS competition mechanism to keep the network from high frequency of backoﬀ caused by the multiple RTS attempts problem. Via the RTS competition mechanism

useful data transmission can be completed successfully when the situation of multiple RTS attempts occurs. Simulation results show that RC-SFAMA increases the network throughput eﬃciency as compared with slotted-FAMA

and minimizes the energy consumption.

关键词

Keywords

references

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