A network node, a wireless device and methods therein for selecting a communication mode in a wireless communications network

Abstract

Embodiments herein relate to a method performed by a network node (110) for selecting a communication mode in a wireless communications network (100). The network node (110) obtains information about a first and a second wireless device (121, 122) in the wireless communications network (100) indicating that the first and the second wireless device (121, 122) are capable of communicating using any one of a set of at least three communication modes comprising at least a cellular communication mode, a Device-to-Device, D2D, half-duplex communication mode, and a D2D full-duplex communication mode. Also, the network node (110) selects, from the set of at least three communication modes, one of the communication modes for a communication between the first and second wireless devices (121, 122) when at least one criterion on a capability of the first and second wireless device (121) associated with one of the communication modes is met, and / or at least one criterion on an operational capability of the network node (110) associated with one of the communication modes is met. Then, the network node (110) transmits information about the selected communication mode for the communication between the first and second wireless devices (121, 122) to at least the first wireless device (121). Embodiments of the network node (110) are also described. Furthermore, embodiments herein further relate to a wireless device (110) and method therein for selecting a communication mode for a communication with a second wireless device (122) in a wireless communications network (100).

Description

technical field [0001] Embodiments herein relate to communication modes in wireless communication networks. Specifically, the embodiments herein relate to a network node for selecting a communication mode in a wireless communication network and a method thereof, and to a wireless device and a method for selecting a communication mode for communicating with a second wireless device in a wireless communication network method. Background technique [0002] In a typical wireless communication network, wireless devices (also referred to as mobile stations, terminals and / or user equipment (UE)) communicate via a radio access network (RAN) with one or more core networks. The RAN coverage is divided into a geographical area of ​​cells, where each cell is served by a base station, such as a radio base station (RBS), or a network node, which in some networks may also be referred to, for example, as a "NodeB", "eNodeB ”, “eNB” or Access Point (AP). A cell is a geographical area wher...

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Problems solved by technology

However, it does not disclose how the wireless communication network should control the D2D communication in order to fully utilize the D2D pair of wireless devices capable of FD communication in the wireless communication network, such as how to perform mode selection (MS)

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