08-16-2017, 10:03 PM
Improving TCP/IP Performance over Third-Generation Wireless Networks
The (3G) wireless networks with high data rates is gradually being deployed. The Transmission Control Protocol (TCP) must be optimised to perform in these networks. This will have a broad and significant impact on data application performance. The parts described in this chapter are :
-adapting to the significant delay and rate variations over the wireless channel and
-a wireless channel and TCP-aware scheduling and buffer sharing algorithm
Window Regulator algorithms is presented to use the receiver window field in the acknowledgment (ACK) packets. The the latency of
short flows is reduced by the use of the new buffer sharing algorithm.
ARCHITECTURE
the 3G wireless access network architecture consists of PDSN, RNC and many BSs which are connected to the 3G enabled devices wirelessly. The base stations are managed by an RNC. The handoffs and
termination of the Radio-Link Protocol (RLP) is done by the RNC. The Packet Data Service Node (PDSN) terminates the Point-to-Point Protocol (PP).
WINDOW REGULATOR
The delay and bandwidth variations can cause the variation in the throughput.One of the methods to avoid buffer overflow at the congestion (RNC) buffer is to control the amount of data packet that can arrive at the RNC data buffer.
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