The chapter concentrates on the changeover of some RRM features including the packet scheduler into NodeB. The changes in RRM functions of the network nodes triggered more modifications of HSDPA air interface which include introduction of bigger‐buy modulation and coding schemes, and modification from the MAC protocol architecture for enabling the speedy scheduling during the BTS.
On-line stores have ordinarily relied on the person services of carriers like UPS, FedEx, or USPS for his or her delivery desires. Historically, these alliances provided organizations regular prices and trusted supply timelines, when carriers enjoyed the trustworthiness of forecasted volumes.
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It solves the Close to-considerably trouble where transmitters at diverse distances transmits signal of similar electricity then the power of the signal of Transmitter (nearer to The bottom station) might be higher than that of Transmitter (farther to The bottom station).
多址接入 ：不同的用户使用不同的扩频码，可以在同一频率上同时进行通信，实现了多个用户在同一频段上的同时接入。
Network Infrastructure: The cellular network infrastructure incorporates foundation stations, mobile switching facilities, and data facilities that manage and route EVDO site visitors. Foundation stations connect with mobile get more info devices, though mobile switching facilities manage call routing and deal with network resources.
The elemental features which empower rise in data throughput and ability with lowered latency are presented click here under:
The mobile receiving a variable-rate site visitors frame would not know the rate at which the frame was transmitted. Typically, the frame is decoded at Each individual attainable rate, and employing the standard metrics with the Viterbi decoder, the proper result's picked out.
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Evolution Data Only (EVDO) is often a telecommunications standard for your wi-fi transmission of data by means of radio alerts, mostly useful for broadband World wide web access.
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EVDO, a critical development in the CDMA (Code Division Multiple Access) household, was intended to satisfy the escalating need to have for effective and large-speed data transmission over cellular networks inside the telecommunications sector.
控制精度 ：需要评估功率控制最终达到的精度，即信号的功率是否精确达到了目标值。