Monday, April 12, 2010

the demand

As the fast development of communications and information technology the demand of the downlink data service of mobile network is increasing tremendously. The 2Mbps peak speed of single frequency TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) data transportation became unable to satisfy some new data services. In this blog lace wedding dresses context, the multi-frequency blog wedding dresses 2010(High Speed Downlink Packet Access) is proposed by new wedding dresses in Release 5 specification.To satisfy the demand of unsymmetrical downlink packet data service, the multi-frequency HSDPA implements the cheap shoes blog 2010 entity into Node B. This dissertation is focus on discussing the design and implementing of the key algorithms of flow control, scheduling & priority handling and discount wedding gowns.This dissertation investigates the 3GPP module of custom made prom dresses system, analyzes the mechanism of flow control in HSDPA MAC in detail, and proposes a suitable method, which has low transport lag and low signaling cost. Furthermore, based on the thought of the Proportional Fairness Algorithm, the dissertation proposes a way to solve the problem of how to determine the priority of the HSDPA user, which proves to be practicable.
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