Enhanced listen-before-talk

Abstract

An enhanced LBT procedure (200) mitigates unnecessary delays in delivering transmissions between User Equipment and base stations over unlicensed spectrum. A UE or base station selects a particular CAPC corresponding to an intended transmission (225) based on an intelligent mapping of different types of transmission payload (e.g., transmission payload other than or in in addition to pre-defined, QoS -related UP message data payload) to different CAPCs. Most (if not all) of the mapped CAPCs corresponding to the different types of transmission payload are of a higher priority than a lowest priority CAPC (212-222), resulting in channel access procedures that are more commensurate with respective transmission payloads. The intelligent mapping may indicate different priorities among different types of transmission payload and / or different types of messages, and / or may indicate which type of transmission is to govern selection of a CAPC when multiple types of transmission payload are included in a single, intended transmission.

Description

technical field [0001] The present disclosure relates to wireless communications, and more particularly, to allocating resources for wireless communications in unlicensed portions of the spectrum. Background technique [0002] The background description provided within this document is for the purpose of generally presenting the context of the disclosure. The work of the presently mentioned inventors within the scope described in this Background section, and aspects that do not conform to the description of the prior art at the time of filing, are neither expressly nor implicitly admitted as directed to the present disclosure existing technology. [0003] In some cases, base stations and user equipment operating in a wireless communication network system may utilize portions of both licensed and unlicensed radio spectrum. For example, 5G New Radio (NR) supports operation in unlicensed spectrum, which is generally referred to as NR-U. One of the requirements of NR-U is int...

AI Technical Summary

Problems solved by technology

Similarly, UE transmissions including Control Plane (CP) messages or information are subject to unnecessary, inconsistent or even unknown delays due to LBT procedures performed based on the lowest priority CAPC

[0015] In addition, wireless network systems may also suffer from unnecessary, inconsistent and incompatible delays in downlink transmissions from base stations to UEs, since such downlink transmissions are also subject to the lowest priority prior to transmission of downlink transmissions. The impact of the delay introduced by the LBT process performed by CAPC-level

In essence, these approaches, whether uplink or downlink, may result in an unfavorable mismatch between the channel access priority class and the priority of the payload of the intended transmission, resulting in inappropriate in the delivery of the intended transmission itself , inconsistencies and unnecessary delays

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