name: DC
full_form: Dedicated Control (SAP)
context: Hybrid ARQ can significantly increase user throughput over independent ARQ and FEC. In effect, Hybrid ARQ adapts to the channel by sending additional increments of redundancy, which decreases the overall coding rate and effectively lowers the data rate to match the channel (NOTE 1). In addition to improving throughput, Hybrid ARQ can be viewed as an enabler for adaptive modulation and coding (AMC). Hybrid ARQ makes AMC rate selection more robust because it does not rely on channel estimates to provide the correct code rate, but instead relies on the errors signalled by the ARQ protocol. However, Hybrid ARQ requires additional receiver memory to store unsuccessful attempts. As a result, Hybrid ARQ can significantly increase UE complexity depending on the ARQ protocol design and the network configuration. NOTE 1: 'Hybrid ARQ' (or HARQ) is defined as any combined ARQ and FEC method that saves failed decoding attempts for future joint decoding. Hybrid ARQ therefore encompasses many named
description: Dedicated Control (DC) is a protocol used in EN-DC (Evolved Universal Terrestrial Radio Access Network - New Radio Dual Connectivity). It allows for the combination of LTE and NR bands to enhance network performance. DC configurations and operating bands facilitate inter-band operations between LTE and NR.
explanation: DC is classified as a Protocol because it defines rules for data transmission and control within the EN-DC setup, specifically focusing on band combinations and configurations that enable efficient communication between LTE and NR.
section_title: 6.2.25	DC_12_n258
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