Reliable cut-through forwarding in CDMA inter-vehicle networks

Authors:
Oyunchimeg Shagdar;Suhua Tang;Mehdad N. Shirazi;Ryutaro Suzuki;Sadao Obana
Affiliations:
ATR Adaptive Communications Research Laboratories, Kyoto, Japan;ATR Adaptive Communications Research Laboratories, Kyoto, Japan;ATR Adaptive Communications Research Laboratories, Kyoto, Japan;ATR Adaptive Communications Research Laboratories, Kyoto, Japan;ATR Adaptive Communications Research Laboratories, Kyoto, Japan
Venue:
Proceedings of the 2nd international conference on Ubiquitous information management and communication
Year:
2008

Citing 3
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Abstract

In inter-vehicle networks, it is required that collision warning messages be forwarded over multiple hops with significantly short delay. Cut-through packet forwarding is known to effectively reduce forwarding latency. However, it suffers from reliability issue, which can be severe in wireless networks, due to fading, users' mobility, and so on. This paper tries to establish a reliable cut-through forwarding method by applying diversity combining scheme for collision warning messages. By exploiting the nature of the multi-hop forwarding of a broadcast packet in an CDMA network, the diversity combining scheme does not incur any additional communication overhead or delay. The simulation results show that proposed scheme can reduce BER of the conventional scheme by at least 2 orders of magnitude.