Ericsson implements 4G network

Ericsson and TeliaSonera announced the signing of a commercial 4G network, this network will cover Sweden's capital Stockholm and the contract is Ericsson's first for commercial deployment of LTE. Ericsson and TeliaSonera have started the roll-out in Stockholm, for commercial launch 2010.

The roll-out of the 4G mobile broadband network will offer the highest data rates ever realized, with the best interactivity and quality.The LTE system is based on 3GPP standards for LTE (Long Term Evolution) radio technology and SAE (System Architecture Evolution) core technology.LTE is a continued evolution of 2G e 3G (i.e. GSM/CDMA/WCDMA/TD-SCDMA) mobile networks and is an integrated part of Ericsson's Full Service Broadband offering. Ericsson offers high capacity radio access (LTE), high capacity EDA multi-access edge routers, evolved packet core networks (SAE), multimedia communication with IMS and high-capacity, low-cost carrier Ethernet transport.

Source: http://www.ericsson.com/ericsson/press/releases/20090115-1282289.shtml

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Control Layer - Part 2 (CSCF)

We already talked about HSS, now is time to describe other component. The CSCF (Call Session Control Function) is a SIP server and it's responsable for the first iterations int the IMS network. It has the function of registration the termination and establishment of sessions. The CSCF server is divided on 3 parts: S-CSCF (Serving), I-CSCF (Interrogating) and P-CSCF (Proxy).

Source: http://www.3gdb.org/

In coming posts we will go into detail on each part of the server CSCF.

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