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Monday, April 2, 2012

SCTP Fast Path Optimization for 3G/LTE Networks

The exploding growth of the internet and associated services over the last decade is fueling the need for ever increasing bandwidth. The number of intelligent handheld devices is growing exponentially and in turn the demand for high-speed data services while on the move is increasing tremendously. Current 3rd Generation (3G) mobile technology is able to cope with the huge increase in demand to some extent but is not suitable for satisfy the needs completely. Long Term Evolution (LTE), a whole new “4th Generation” mobile radio access network (RAN) technology, promises higher data rates—100Mbps in the downlink and 50Mbps in the uplink in LTE’s first phase—and will reduce the data and control plane latency with an aim at quenching the insatiable thirst for high-speed mobile data access. Additionally, LTE is designed to support interoperability with existing mobile network technologies such as GSM, GPRS and UMTS. LTE also supports scalable bandwidth, from 1.25MHz to 20MHz, which allows operators significant deployment flexibility and also can allow for more rapid roll-out due to spectrum flexibility.

All of these features make LTE a very attractive technology for operators as well as subscribers, and many dozens of operators worldwide have committed to LTE roll-outs in the next two to five years.
All is not rosy, however, and the performance demands of LTE technology is leading to increasing signaling and data requirements which impose additional demand on the network. In this paper, the need for and methods of optimizing the Stream Control Transmission Protocol (SCTP) to handle increased signaling loads in LTE and 3G networks is discussed. READ FURTHER

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