Title :
Smart resource allocation algorithm considering voice activity for VoIP services in mobile-WiMAX system
Author :
Lee, Howon ; Kim, Hyu-Dae ; Cho, Dong-Ho
Author_Institution :
EECS, KAIST, Daejeon, South Korea
fDate :
9/1/2009 12:00:00 AM
Abstract :
A new algorithm is proposed for wireless voice over IP (VoIP) codecs that allocates radio resources in consideration of the variations in packet size and packet-generation period. This algorithm allows resources to be utilized more efficiently in mobile-WiMAX systems. The outstanding performance of our proposed algorithm with respect to average throughput and average packet dropping probability is demonstrated through intensive numerical analysis and simulations. VoIP capacity is compared with respect to the application of different VoIP codecs (G.729B, adaptive multirate (AMR)) and VoIP header compression schemes (payload header suppression (PHS) and robust header compression (ROHC)).
Keywords :
Internet telephony; WiMax; codecs; mobile radio; packet radio networks; resource allocation; G.729B codec; VoIP capacity; VoIP services; adaptive multirate codec; average packet dropping probability; average throughput probability; intensive numerical analysis; mobile-WiMAX system; payload header suppression; radio resource allocation; robust header compression; smart resource allocation algorithm; voice activity; wireless voice over IP codecs; Analytical models; Codecs; Delay; Internet telephony; Numerical analysis; Payloads; Quality of service; Resource management; Robustness; Throughput; Mobile-WiMAX system; VoIP service; payload header suppression; radio resource allocation; robust header compression; voice activity;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2009.081122
