name: TDM
full_form: Time Division Multiplex
context: From the UE perspective, coexistence between LTE V2X and NR V2X SLs is studied when there are coordinated procedures between LTE and NR, and half-duplex constraints are assumed. Solutions based on TDM or FDM between LTE and NR SLs are the focus of the study. TDM solutions are those that involve overlapping or simultaneous NR and LTE V2X SL transmissions. FDM solutions are those that involve simultaneous NR and LTE V2X SL transmissions, and define solutions for sharing the total power between the two. RAN4 conducted indevice coexistence for two scenarios: 1. when LTE SL and NR SL in the ITS band, and without LTE or NR Uu in another band on the same device 2. when LTE SL and NR SL in the ITS band, and with LTE or NR Uu in another band on the same device For the scenario 1: no self-interference issues are identified for TDM operation in 5.9 GHz ITS spectrum. The long-term coexistence is found feasible without any issues. For short-term switching times for TDM operation needs to be
description: Time Division Multiplex (TDM) is a method of transmitting and receiving multiple signals over a shared signal path by dividing the signal into discrete time slots. Each time slot carries a separate signal. In 3GPP TS 38.886, TDM is explored as a solution for in-device coexistence between LTE V2X and NR V2X SLs, enabling overlapping or simultaneous transmissions.
explanation: The text describes TDM as a method for multiplexing signals and its application in a technical standard (3GPP TS 38.886) for telecommunications. This clearly classifies it as a technology.
section_title: 6.1In-device coexistence scenarios
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