Adaptive Error Recovery in cdma2000 1xEV-DO Mobile Broadcast Networks
We analyze the performance of MAC-layer Reed-Solomon error-recovery in the cdma2000 1xEV-DO Broadcast and Multicast Services (BCMCS) environment, with respect to the size of the error control block (ECB) and the air-channel condition, and establish the relationship between ECB size, error-recovery capacity and service latency. Real-time traffic, such as voice and video streaming, is very sensitive to delay, but can stand a certain level of packet loss. We therefore propose an adaptive error-recovery scheme which adjusts the size of the ECB to reflect the environment of the mobile nodes so as to meet the required service quality (target bit error-rate), while reducing the latency of real-time applications, decoding complexity, and memory requirement. Extensive simulation results show the effectiveness of our adaptive approach compared to the current static scheme. Our scheme achieves near-optimal service latency while meeting the target service quality criterion, and also reduces energy consumption during error recovery.
Keywordscdma2000 1xEV-DO BCMCS Adaptive error-recovery Reed-Solomon error control block service latency
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- 2.3GPP2 X.P0019 v0.1.3, Broadcast-multicast services (bcmcs) framework draft doument (August 2003)Google Scholar
- 3.Kang, K., Cho, Y., Shin, H.: Performance analysis of dynamic packet scheduling within a CDMA2000 1xEV-DO Broadcast Network. In: Proc. of IEEE Vehicular Technology Conference, September 2005, vol. 4, pp. 2586–2590 (2005)Google Scholar
- 5.3GPP2 C.S0054 v1.0, Cdma2000 high rate broadcast-multicast packet data air interface specification (February 2004)Google Scholar
- 7.3GPP2 C.S0024 33.0, Cdma2000 high rate packet data air interface specification (December 2001)Google Scholar