US 12,471,130 B2
Communication device and method of selecting a bandwidth
Po-Chuan Lin, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on Aug. 28, 2022, as Appl. No. 17/897,215.
Claims priority of application No. 110138508 (TW), filed on Oct. 18, 2021.
Prior Publication US 2023/0124501 A1, Apr. 20, 2023
Int. Cl. H04W 72/08 (2009.01); H04W 24/08 (2009.01); H04W 72/542 (2023.01)
CPC H04W 72/542 (2023.01) [H04W 24/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A first communication device capable of selecting a bandwidth, comprising:
a receiving circuit, configured to receive a wireless signal from a second communication device according to a first bandwidth, wherein the second communication device initially communicates with the first communication device over an initial bandwidth different from the first bandwidth;
a measurement circuit, coupled to the receiving circuit, the measurement device configured to measure a communication quality of the wireless signal;
a processing circuit, coupled to the measurement circuit, the processing device configured to select a second bandwidth according to the initial bandwidth, the first bandwidth and the communication quality, wherein the communication quality is compared to a plurality of values, when the communication quality is less than a first value, the second bandwidth is selected to be smaller than the first bandwidth, and when the communication quality is more than a second value, the second bandwidth is selected to be greater than the first bandwidth; and
a transmission circuit, coupled to the processing circuit, the transmission device configured to transmit information of the second bandwidth to the second communication device, and the second communication device transmits the wireless signal to the first communication device according to the second bandwidth;
wherein the second bandwidth does not exceed the initial bandwidth.