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3G Evolution, 2nd Edition by Per Beming, Johan Skold, Stefan Parkvall, Erik Dahlman

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Chapter 15. LTE radio interface architecture

Similar to WCDMA/HSPA, as well as to most other modern communication systems, the processing specified for LTE is structured into different protocol layers. Although several of these layers are similar to those used for WCDMA/HSPA, there are some differences, for example due to the differences in the overall architecture between WCDMA/HSPA and LTE. This chapter contains an overview of these protocol layers and their interaction. A detailed description of the LTE architecture is found in Chapter 21, where the location of the different protocol entities in the different network nodes is discussed. For the discussion in this chapter, it suffices to note that the LTE radio-access architecture consists ...

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