Short range communication in a wireless communications system

摘要

There is provided mechanisms for wireless devices to initiate direct-mode or device-to-device communications by exploiting the availability of the existing network coverage. Short range communications in a wireless communications system between a first wireless device and a second wireless device involves exchanging messages between the first wireless device and the second wireless device, first on a first communications link via a network node and then on a second communications link A corresponding method is provided. Also a computer program, a computer program product and a wireless device are provided.

主权项

1. A first wireless device for short range communications in a wireless communications system between the first wireless device and a second wireless device, comprising:
a first communications interface circuit; a second communications interface circuit; and a processing circuit operatively connected to the first and second communications interface circuits;wherein:
the first communications interface circuit is configured to exchange a first set of messages with the second wireless device via a network node in the wireless communications system for establishing a first communications link with the second wireless device via the network node; the processing circuit is configured to acquire a first channel quality indication (CQI) of the first communications link; the first communications interface circuit further is configured to exchange a second set of messages with the second wireless device via the network node for evaluating conditions for setting up a short range connection between the first wireless device and the second wireless device on a second communications link; the second communications interface circuit is configured to exchange a third set of messages with the second wireless device on the second communications link for establishing the short range connection with the second wireless device based on at least one of the conditions; the processing circuit is configured to acquire at least one second channel quality indication (CQI) of the second communications link, prior to establishing the short range connection with the second wireless device; and the processing circuit is configured to trigger the establishing of the short range connection in response to the second CQI being above a first predetermined quality threshold, said first predetermined quality threshold being dependent on said at least one first CQI.