Patent ID: 9131510
Filing Date: 2015-09-08
Classification: H04W,Y02D

Abstract:
1. A wireless relay device comprising: a receiver configured to receive signals from at least a first wireless device and a second wireless device, and to extract, from a signal received from the first wireless device, an indication of a path metric for a path from a source node to the first wireless device, and from a signal received from the second wireless device, an indication of a path metric for a path from the source node to the second wireless device; a processor configured to select, using the extracted indications, a path from the source node to the wireless relay device and to determine a path metric for the selected path, wherein the processor is configured to use indications of the effective gain for, respectively, a path between the first wireless device and the wireless relay device, and a path between the second wireless device and the wireless relay device and the extracted indications to select a path from the source node to the wireless relay device, and to determine the path metric for the selected path as the effective gain for the path from one of the first and the second wireless device to the wireless relay device multiplied by the path metric for the path from the source node to the one of the first and the second wireless device minus a quantity proportional to the noise power on the wireless relay device; a memory configured to store the path metric for the selected path; and a transmitter configured to transmit an indication of the path metric for the selected path to a third wireless device.