Capacity analysis of voice over IP over GERAN with statistical multiplexing

The requirements in terms of service flexibility, spectrum efficiency and speech quality introduce new challenges when voice is transmitted over packet and over wireless. This paper analyses the perceived voice quality when voice frames are transported on packet radio bearers of GSM/EDGE Radio Access Networks (GERAN) and are statistically multiplexed. The resulting quality depends on the link layer quality, on the scheduling and on the header compression algorithms. This paper identifies the range of capacity gain obtained with statistical multiplexing for a given speech quality considering the different radio bearers of GERAN.

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