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Optimum Physical-Layer Frame Size for Maximising the Application-Layer Rateless Code’s Effective Throughput

Optimum Physical-Layer Frame Size for Maximising the Application-Layer Rateless Code’s Effective Throughput
Optimum Physical-Layer Frame Size for Maximising the Application-Layer Rateless Code’s Effective Throughput
The tolerable packet-loss ratio of an Internet Protocol (IP) based wireless networks varies according to the specific services considered. File transfer for example must be error free but tolerates higher delays, whereas maintaining a low delay is typically more important in interactive Voice Over IP (VOIP) or video services. Classic Forward Error Correction (FEC) may be applied to the data to provide resilience against bit errors. A wireless IP network provides the opportunity for the inclusion of FEC at the physical, transport and application layers. The demarcation between the analogue and digital domain imposed at the Physical layer (PHY) predetermines the nature of the FEC scheme implemented at the various layers. At the PHY individual packets may be offered FEC protection, which increases the likelihood of their error-free insertion into the protocol stack. Higher layers receive packets that are error free and the purpose of a FEC scheme implemented here is to regenerate any missing packets obliterated for example by the Binary Erasure Channel (BEC) of the IP network’s routers. A rateless code may be beneficially employed at a higher Open Systems Interconnection (OSI) layer for replenishing the obliterated packets, but unless the characteristics of the channel are considered, the ultimate rate achieved by such a code may be compromised, as shown in this contribution.
978-1-4244-2519-8
1-5
Stevens, Timothy
1c4d67b3-6640-49ff-ab0f-0a33fb190ed3
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Stevens, Timothy
1c4d67b3-6640-49ff-ab0f-0a33fb190ed3
Maunder, Robert G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Stevens, Timothy, Maunder, Robert G. and Hanzo, Lajos (2010) Optimum Physical-Layer Frame Size for Maximising the Application-Layer Rateless Code’s Effective Throughput At 2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), Taiwan, Province of China. 16 - 19 May 2010. , pp. 1-5.

Record type: Conference or Workshop Item (Paper)

Abstract

The tolerable packet-loss ratio of an Internet Protocol (IP) based wireless networks varies according to the specific services considered. File transfer for example must be error free but tolerates higher delays, whereas maintaining a low delay is typically more important in interactive Voice Over IP (VOIP) or video services. Classic Forward Error Correction (FEC) may be applied to the data to provide resilience against bit errors. A wireless IP network provides the opportunity for the inclusion of FEC at the physical, transport and application layers. The demarcation between the analogue and digital domain imposed at the Physical layer (PHY) predetermines the nature of the FEC scheme implemented at the various layers. At the PHY individual packets may be offered FEC protection, which increases the likelihood of their error-free insertion into the protocol stack. Higher layers receive packets that are error free and the purpose of a FEC scheme implemented here is to regenerate any missing packets obliterated for example by the Binary Erasure Channel (BEC) of the IP network’s routers. A rateless code may be beneficially employed at a higher Open Systems Interconnection (OSI) layer for replenishing the obliterated packets, but unless the characteristics of the channel are considered, the ultimate rate achieved by such a code may be compromised, as shown in this contribution.

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More information

Published date: May 2010
Venue - Dates: 2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), Taiwan, Province of China, 2010-05-16 - 2010-05-19
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 271164
URI: http://eprints.soton.ac.uk/id/eprint/271164
ISBN: 978-1-4244-2519-8
PURE UUID: f1b6e50b-8bd1-4dbd-a938-6e943bc9f764
ORCID for Robert G. Maunder: ORCID iD orcid.org/0000-0002-7944-2615
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 25 May 2010 20:13
Last modified: 18 Jul 2017 06:46

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Contributors

Author: Timothy Stevens
Author: Robert G. Maunder ORCID iD
Author: Lajos Hanzo ORCID iD

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