name: RB
full_form: Radio Bearer
context: for the HARQ process. Wideband operation: The concept of âRB setâ is introduced which approximately corresponds to one 20MHz channel. For PUSCH, the resource allocation is defined by continuous RB sets and the set of interlaces. The RB sets are defined by RRC configuring the intra-cell guard band between RB sets. If the intra-cell guard band is not configured, the default values for intra-cell guard band from RAN4 will be applied. It is also possible to configure the intra-cell guard band to be 0. In a DL BWP with bandwidth larger than 20MHz, gNB may transmit DL channels and signals when LBT is successful on a subset of RB sets (either contiguous or non-contiguous) in the BWP. In a UL BWP with bandwidth larger than 20MHz, UE is allowed to transmit UL channel and signals only if LBT is successful on all RB sets where UL transmission is scheduled/configured and non-zero intra-cell guard is applied in between. MAC Enhancements At the Medium Access Control (MAC) layer, several features
description: Radio Bearer (RB) refers to a radio resource allocation concept used for transmitting data over the air interface in wireless communication systems, particularly in the context of LTE and 5G networks. It is not strictly a network function, protocol, or any other predefined category but rather a term relevant to telecommunications.
explanation: The provided context from 3GPP TS 21.916 discusses Radio Bearer (RB) sets in relation to resource allocation for PUSCH and the configuration of intra-cell guard bands. This usage does not fit neatly into categories like Network Function, Protocol, or others listed but is a critical concept within telecommunications, thus classified under Miscellaneous.
section_title: 19.1.1	NR-based access to unlicensed spectrum
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