TECHNICAL FIELD

The present disclosure is generally related to mobile communications and, more particularly, to resource selection of multiple transmission occasions in new radio (NR) sidelink communications with respect to user equipment and network apparatus in mobile communications.

BACKGROUND

Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.

In Long-Term Evolution (LTE) vehicle to everything (V2X) or NR V2X, sidelink was proposed for direct communication between two devices without going through a base station. How to determine the resource allocation for sidelink transmissions is further discussed. It was agreed that two resource allocation modes, Mode 1 and Mode 2, are supported in New Radio (NR) V2X. In Mode 1, a base station can schedule sidelink resources to be used by a transmit (Tx) user equipment (UE) for sidelink transmission, which can be regarded as centralized scheduling method. In Mode 2, a UE should determine sidelink transmission resources within sidelink resources configured by base station or pre-configured. This can be regarded as distributed scheduling method. Mode 2 is a sidelink resource allocation for transmission with UE autonomous selection. Therefore, how to select resources for transmission with as small interference by other UEs as possible becomes a critical issue in NR V2X.

Accordingly, how to design resource selection procedure to avid interference and improve performance between UEs becomes an important issue in the newly developed wireless communication network. Therefore, there is a need to provide proper schemes for resource selection of multiple transmission occasions in NR sidelink communications to meet the requirements in NR V2X network.

SUMMARY

The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.

An objective of the present disclosure is to propose solutions or schemes that address the aforementioned issues pertaining to resource selection of multiple transmission occasions in NR sidelink communications with respect to user equipment and network apparatus in mobile communications.

In one aspect, a method may involve an apparatus selecting a first transmission resource from a resource selection window. The method may also involve the apparatus determining a maximum time gap and a minimum time gap. The method may further involve the apparatus selecting a second transmission resource according to the maximum time gap and the minimum time gap. The method may further involve the apparatus informing the first selected transmission resource and the second selected transmission resource to at least one peer apparatus.

In one aspect, an apparatus may comprise a transceiver which, during operation, wirelessly communicates with a network node of a wireless network. The apparatus may also comprise a processor communicatively coupled to the transceiver. The processor, during operation, may perform operations comprising selecting a first transmission resource from a resource selection window. The processor may also perform operations comprising determining a maximum time gap and a minimum time gap. The processor may further perform operations comprising selecting a second transmission resource according to the maximum time gap and the minimum time gap. The processor may further perform operations comprising informing, via the transceiver, the first selected transmission resource and the second selected transmission resource to a peer apparatus.

It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as Long-Term Evolution (LTE), LTE-Advanced, LTE-Advanced Pro, 5th Generation (5G), New Radio (NR), Internet-of-Things (IoT), Narrow Band Internet of Things (NB-IoT) and Industrial Internet of Things (IoT), the proposed concepts, schemes and any variation(s)/derivative(s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies. Thus, the scope of the present disclosure is not limited to the examples described herein.

