name: LBT
full_form: Listen Before Talk
context: beam. When LBT mode is used, spatial domain multiplexing of different beams is supported. The LBT requirement (if any) for spatial domain multiplexing of multiple beams can be further discussed when specifications are developed. At least the following can be considered while other LBT considerations are not excluded: - leave the LBT behaviour for implementation, - one LBT beam covers all transmission beams, - multiple LBT beams cover multiple transmission beams. When LBT mode is used, time domain multiplexing of DL/UL transmissions in different beams in the same COT is supported. The LBT requirement (if any) for time domain multiplexing of DL/UL transmissions in multiple beams can be further discussed when specifications are developed. At least the following can be considered while other LBT considerations are not excluded: - no additional LBT requirement defined and leave the LBT behaviour for implementation, - perform directional or omni-directional LBT at the beginning of COT with
description: Listen Before Talk (LBT) is a technique used in wireless communication systems to manage interference and improve coexistence between different radio access technologies. In the context of 3GPP TS 38.808, LBT refers to a design approach for beam management in 5G New Radio (NR) systems, enabling spatial domain multiplexing and time domain multiplexing of multiple beams.
explanation: The text describes LBT as a technique used in wireless communication systems to manage interference and improve coexistence between different technologies. It is specifically mentioned in the context of 3GPP TS 38.808, which deals with 5G NR system specifications. This indicates that LBT is a technological concept related to telecommunications.
section_title: 5.2.2Listen before talk (LBT) design
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