August 2018
Intermediate to advanced
466 pages
13h 56m
English
book
5G NR: The Next Generation Wireless Access Technology
by Erik Dahlman, Stefan Parkvall, Johan Skold
Content preview from 5G NR: The Next Generation Wireless Access Technology
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Chapter 13
Retransmission Protocols
Abstract
Retransmission functionality in three different protocol layers—hybrid ARQ, RLC, and PDCP—are discussed in this chapter. The timing of hybrid ARQ acknowledgments and the processing time is also described.
Keywords
HARQ; hybrid ARQ; RLC; PDCP; CBG; soft combining; status reports; HARQ codebook; DAI; segmentation; in-sequence delivery
Transmissions over wireless channels are subject to errors, for example, due to variations in the received signal quality. To some degree, such variations can be counteracted through link adaptation as will be discussed in Chapter 14. However, receiver noise and unpredictable interference variations cannot be counteracted. Therefore, virtually all wireless communication systems ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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