Resource pool design for group communications

A group of user devices, UEs, in a wireless communication system, the wireless communication system comprising a plurality of base stations and a plurality of user devices, comprising

• one more first apparatus, and
• one or more second apparatus,
• wherein the one or more first apparatus comprise at least one group leader, GL UE, wherein the GL UE is configured to
• be connected to a base station for a communication with the base station,
• be connected to one or more UEs via a sidelink for a sidelink communication with the one or more UEs, the apparatus and the one or more UEs forming a group of user devices, and
• request from a base station, directly or indirectly, resources to be used for the sidelink communication with the one or more UEs of the group of user devices,
• acquire n from the base station, directly or indirectly, information about at least one set of resources to be used for the sidelink communication within the group, each of the sets of resources being only or exclusively used within the group of user devices, the group members comprising the apparatus and the one or more UEs of the group,
• acquire directly from the base station the information about the set of resources to be used for transmissions within the group of user devices,
• inform the one or more UEs of the group of user devices about the set of resources to be used for transmissions within the group of user devices, and
• for a communication within the group, only the apparatus is configured to request from the base station the set of resources, and the one or more UEs of the group do not request any resources from the base station but communicate within the group using only the resources within the set of resources, and
• wherein the one or more second apparatus comprise one or more remote UEs, wherein the remote UE is configured to
• be connected to a base station for a communication with the base station,
• be connected to one or more UEs via a sidelink for a sidelink communication with the one or more UEs, the apparatus and the one or more UEs forming a group of user devices,
• request from a base station, directly or indirectly, resources to be used for the sidelink communication with the one or more UEs of the group of user devices,
• acquire from the base station, directly or indirectly, information about at least one set of resources to be used for the sidelink communication within the group, each of the sets of resources being only or exclusively used within the group of user devices, the group members comprising the apparatus and the one or more UEs of the group,
• in case of acquiring the information about the set of resources from the base station indirectly, the remote UE is configured to acquire the information about the set of resources from the GL UE, and
• wherein the first and second apparatus form a group of user devices.

A base station for a wireless communication system, wherein

• the base station is configured to communicate with one or more of a plurality of user devices, UEs, the base station configured to provide a number of resources to be allocated for transmissions within one or more groups of user devices, the one or more groups of user devices comprising as group members one or more apparatus, the apparatus configured to
• be connected to a base station for a communication with the base station,
• be connected to one or more UEs via a sidelink for a sidelink communication with the one or more UEs, the apparatus and the one or more UEs forming a group of user devices,
• request from a base station, directly or indirectly, resources to be used for the sidelink communication with the one or more UEs of the group of user devices, and
• acquire from the base station, directly or indirectly, information about at least one set of resources to be used for the sidelink communication within the group, each of the sets of resources being only or exclusively used within the group of user devices, the group members comprising the apparatus and the one or more UEs of the group, and
• the base station is configured to
• receive from one or more group members, a request for resources to be used for transmissions within the group of user devices, and
• provide to one or more group members a set of resources belonging to the first number of resources to be used for transmissions within the group of user devices, the set of resources being only or exclusively used within the group of user devices to which the one or more group members belong.