engleski

Lossless compression in a combined GSM/UMTS mobile backhaul network

Deployment of UMTS networks and enhancement of GSM/GPRS with EDGE gives more efficient radio interface that enables higher data speeds and more capacity for voice. That evolution requires additional transmission capacity to transport extra traffic through mobile backhaul network from Base stations to Mobile Switching Centers. Moreover, UMTS specifies ATM or IP as a bearer, requiring upgrade of TDM based backhaul network used for GSM. Building separate mobile backhaul networks for UMTS and GSM is inefficient and expensive, especially since mobile operators expect that UMTS will cannibalize use of GSM network over time, leaving GSM backhaul capacity unused. This article defines a solution for a single mobile backhaul network that supports UMTS and GSM with GPRS and EDGE. The solution reduces mobile backhaul transmission capacity requirements by using advanced lossless compression method for GSM voice, traffic aggregation, and statistical multiplexing of voice and data traffic generated by both GSM and UMTS networks. It explains in details used lossless GSM compression method.

GSM ; UMTS ; EDGE ; backhaul network ; ATM ; IP

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