| EPSRC Reference: |
GR/J52082/01 |
| Title: |
MEDIA ACCESS CONTROL PROTOCOLS FOR INDOOR WIDEBAND RADIO COMMUNICATIONS |
| Principal Investigator: |
Aghvami, Professor AH |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Electronic Engineering |
| Organisation: |
Kings College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 December 1993 |
Ends: |
30 November 1996 |
Value (£): |
131,621
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| EPSRC Research Topic Classifications: |
| RF & Microwave Technology |
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Summary on Grant Application Form |
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a) To investigate the performance of a novel media access control protocol for indoor radio local area networks. b) To compare the performance with other media access control systems.c) To study the effect of varying station complexity on system performance.Progress:Since the beginning of this project, both a discrete event simulator and mathematical model of the protocol to be examined has been constructed. The simulator has been thoroughly tested in simplified form against the ma thematic model. Results obtained from the simulator have been compared with alternative protocol models which have been built. Currently the protocols are being evaluated against the emerging standards IEEE802.11 and HIPERLANWe have characterised the behaviour of outage events and examined the bandwidth lost for a variety of data transfer modes using Carrier Sense Multiple Access when transmitting typical LAN data across the indoor radio channel. A flexible analysis of bandwidth utilisation for CSMA transmission has been calculated. The impact of outage on utilisation for an example 10Mb/s network operating at a frequency of 18GHz. It has been shown that a handshake prior to data transmission can result in better network efficiency for all but small data packet sizes. The effect of a decision feedback equaliser training sequence is determined and the outage improvement necessary to justify the necessary redundant data calculated. Publications:1. R.J. Haines, A. Hoffmann and A.H. Aghvami, Performance Analysis of a Token Based Media Access Control Protocol with Asymmetric Polling Strategy for Indoor Radio Local Area Networks under Channel Outage Conditions, IEEE International Communications Conference, New Orleans, 1994.2. R.J. Haines, A. Hoffmann and A.H. Aghvami, Performance Analysis of a Token Based Media Access Control Protocol for Indoor Radio Local Area Networks under Channel Outage Conditions, submitted Journal of Wireless Networks.3. R.J. Haines and A.H. Aghvami, Impact of Chamlel Outage on Performance of Wireless Local Area Network Protocols, submitted IEEE Transactions on Networks.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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