Patent ID: 9344180
Filing Date: 2016-05-17
CPC Classification: H04B

Claim Text:
1. An antenna-diversity receiver for receiving data units from a transmitter in a frequency-hopping communication system having a channel set comprising of two or more channels, each channel having a respective frequency range of a plurality of frequency ranges, the transmitter having an advertising mode in which the transmitter transmits an advertising signal and switches from one advertising channel to another advertising channel in accordance with a sequence of advertising intervals, each advertising interval comprising one or more advertising packets; and the channel set comprising a set of two or more advertising channels and a set of two or more data channels, the receiver being connectable to an antenna set comprising of two or more antennas; the receiver having an antenna sampling mode in which the receiver receives, successively for each combination of an antenna of the antenna set and an advertising channel of the set of advertising channels, one or more advertising packets on the respective advertising channel of the set of advertising channels using the respective antenna of the antenna set and determines a corresponding signal quality value; wherein the receiver is arranged to select, for each data channel, a respective antenna on the basis of the determined signal quality values, and wherein the receiver is arranged to prompt the transmitter to switch to the advertising mode in response to detecting that one or more of antennas of the antenna set have an insufficient received signal strength indicator (RSSI) level in a data reception mode.