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US 8,620,325 B2Granted
Link quality measurements based on data rate and received power level
AssigneeBlackBerry Limited
InventorsMichael Montemurro, Roger Durand
Life of this patent
Estimating the term…
Abstract
A mobile station associated with a base station determines a measure of the quality of a communication link between the mobile station and the base station. The measure takes into account (a) RF power levels of signals received at the mobile station over the link and (b) an actual data rate of communications over the link. This measure of the quality of the link may be a factor in triggering the mobile station to initiate a handoff.
Claims16
A method in a mobile station that is associated with a base station, the method comprising:
- determining an expected radio frequency power level for communications over a link between the mobile station and the base station, where the expected power level takes into account an actual data rate of communications over the link;
- and
- determining a measure of the quality of the link by comparing the expected power level and radio frequency power levels of signals received at the mobile station over the link.
A mobile station comprising:
- a wireless local area network communication interface through which the mobile station is able to communicate with an access point over a communication link;
- a processor coupled to the wireless local area network communication interface;
- a memory coupled to the processor, the memory storing a link quality measurement module that, when executed by the processor, is arranged to determine an expected radio frequency power level for communications over the link, where the expected power level takes into account an actual data rate of communications over the link, and is arranged to determine a measure of the quality of the link by comparing the expected power level and radio frequency power levels of signals received at the mobile station over the link via the wireless local area network communication interface.
A mobile station comprising:
- a wireless local area network communication interface through which the mobile station is able communicate with an access point;
- another wireless communication interface through which the mobile station is able to communicate with a base station over a communication link;
- a processor coupled to the wireless local area network communication interface and to the other wireless communication interface;
- a memory coupled to the processor, the memory storing a link quality measurement module that, when executed by the processor, is arranged to determine an expected radio frequency power level for communications over the link, where the expected power level takes into account an actual data rate of communications over the link, and is arranged to determine a measure of the quality of the link by comparing the expected radio frequency power level and radio frequency power levels of signals received at the mobile station over the link via the other wireless communication interface.
1 more element
Dependencies are inferred from the claim text.