The chapter focuses on the changeover of some RRM functions such as the packet scheduler into NodeB. The alterations in RRM functions of your network nodes led to supplemental modifications of HSDPA air interface like introduction of larger‐get modulation and coding schemes, and modification with the MAC protocol architecture for enabling the speedy scheduling in the BTS.
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In case the mobile device moves, the network performs a handoff, transferring the data session to a new channel or foundation station seamlessly to take care of connectivity.
Evolution-Data Optimized, also referred to as EV-DO, is a telecommunications standard for wi-fi transmission of data via radio alerts, generally Employed in broadband Online access. Introduced to be a Section of the 3G CDMA (Code Division Multiple Access) digital network know-how, EV-DO gives fast data rates, therefore enhancing the mobile connectivity and internet access speeds for smartphone buyers and those using data playing cards on laptops along with other devices. Its most important reason is usually to aid large-velocity Net on mobile devices, thus assisting buyers stream video clips, search the online, download applications, and use their devices for other Net-related jobs on the move.
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Moreover, the network coverage (signal excellent) may effects the data speeds. Down below are a few screenshots for HSPA+ from the handful of speed exams performed in britain.
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制式中，区分各个信道主要不再依靠频率和时隙等方法，同一地区不同用户同时使...
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HSPA also incorporates numerous other characteristics that help to Enhance the overall consumer working experience. As an example, HSPA networks use a way called Adaptive Modulation and Coding (AMC) to Multi-copyright dynamically modify the modulation and coding strategies based upon the standard of the radio url. This really helps to improve the data transmission speeds and reliability in different network situations.
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频谱利用率高： 多载波技术可以更有效地使用有限的频谱资源，提高频谱利用率。