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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ho, I.W.-H. Lam, P.P. Chong, P.H.J. Soung Chang Liew |
| Copyright Year | 2011 |
| Description | Author affiliation: School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore (Chong, P.H.J.) || Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong (Soung Chang Liew) || P2 Mobile Technologies Limited, Hong Kong (Ho, I.W.-H.; Lam, P.P.) |
| Abstract | Wireless Mesh Network (WMN) has become a popular access network architecture in the community due to its low cost and readily deployable nature. However, it is well known that multi-hop transmission in WMN is vulnerable to bandwidth degradation, primarily due to contention and radio interference. A straightforward solution to this problem is to use mesh nodes with multiple radios and channels. In this paper, we demonstrate through real-world experiments that the use of multiple radios and channels solely cannot solve the multi-hop TCP throughput degradation problem in IEEE 802.11n mesh networks. We verify that it is because the round trip time (RTT) for wireless communication path increases significantly with the number of hops, and the TCP throughput is limited inversely by the RTT. Due to this TCP throughput limitation, we also found interestingly that the multi-hop TCP throughput (up to five hops) of 802.11a is comparable to that of 802.11n. Our results give a key message that a new generation of TCP needs to be proposed and adopted so as to support the ever advancing wireless technologies and growing demand of multi-hop communications in wireless mesh networks. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 649409 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781457700293 |
| e-ISBN | 9781457700316 |
| DOI | 10.1109/ICICS.2011.6174317 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-12-13 |
| Publisher Place | Singapore |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Throughput Wireless communication IEEE 802.11n Standard Spread spectrum communication Mesh networks Wireless mesh networks Multi-hop TCP Throughput Wireless Mesh Network (WMN) IEEE 802.11n Multi-Radio Multi-Channel (MRMC) |
| Content Type | Text |
| Resource Type | Article |
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