Seamless handover of IPTV streams in a wireless LAN network

Ger Cunningham; Philip Perry; John Murphy; Liam Murphy

doi:10.1109/TBC.2009.2030466

Seamless handover of IPTV streams in a wireless LAN network

Ger Cunningham
, Philip Perry
, John Murphy
, Liam Murphy

University College Dublin

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

A robust mechanism to enable seamless handover of streamed IPTV in a WLAN is presented. Handover in a wireless network is usually based on signal strength measurements, but that approach does not consider levels of congestion within the network. Here, the case of stationary nodes with varying levels of network congestion is considered. A scheme that analyzes the jitter is used to establish the relationship between congestion and loss in WLANs. This Moving Average of Negative Jitter is used as the basis of a handover scheme which can minimize loss. The handover scheme uses a client with two simultaneous connections to the same server through two separate WLANs, and it is shown that the client can compare the jitter in the two streams to determine which network delivers the best performance; this information is then used to determine when to perform a handover. The proposed scheme is implemented and results are presented that show the successful handover of an RTP over UDP stream in a live WLAN environment. The test scenario used is aimed at Over-The-Top service delivery, but the core algorithm is expected to be more broadly applicable.

Original language	English
Article number	5272433
Pages (from-to)	796-801
Number of pages	6
Journal	IEEE Transactions on Broadcasting
Volume	55
Issue number	4
Early online date	29 Sept 2009
DOIs	https://doi.org/10.1109/TBC.2009.2030466
Publication status	Published (in print/issue) - 1 Dec 2009

Funding

Manuscript received April 01, 2009; revised July 12, 2009. First published September 29, 2009; current version published November 20, 2009. This work was supported in part by Informatics Research initiative of Enterprise Ireland. The authors are with the School of Computer Science and Informatics, University College Dublin, Dublin 4, Ireland (e-mail: gercunningham@hotmail. com; [email protected]; [email protected]; [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TBC.2009.2030466

Keywords

Handover
IPTV
Streamed video
Wireless LAN

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10.1109/TBC.2009.2030466

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abstract = "A robust mechanism to enable seamless handover of streamed IPTV in a WLAN is presented. Handover in a wireless network is usually based on signal strength measurements, but that approach does not consider levels of congestion within the network. Here, the case of stationary nodes with varying levels of network congestion is considered. A scheme that analyzes the jitter is used to establish the relationship between congestion and loss in WLANs. This Moving Average of Negative Jitter is used as the basis of a handover scheme which can minimize loss. The handover scheme uses a client with two simultaneous connections to the same server through two separate WLANs, and it is shown that the client can compare the jitter in the two streams to determine which network delivers the best performance; this information is then used to determine when to perform a handover. The proposed scheme is implemented and results are presented that show the successful handover of an RTP over UDP stream in a live WLAN environment. The test scenario used is aimed at Over-The-Top service delivery, but the core algorithm is expected to be more broadly applicable.",

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Seamless handover of IPTV streams in a wireless LAN network

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Keywords

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