New Radio Access Layer 2/3 Aspects and System Operation
Abstract
The layer 2 of the new radio protocol stack is split into four sublayers: medium access control, radio link control, packet data convergence protocol, and service data adaptation protocol, where each sublayer hosts a number of functions and performs certain functionalities that are configurable via radio resource control at layer 3. The layer 2 protocols of NR have some similarities with the corresponding LTE protocols; however, the NR has added more configuration flexibility and more functionalities to support the new features such as beam management that have no counterpart in LTE. In NR layer 2 protocol structure, each sublayer provides certain services to the immediately ...
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