Power management for multi-carrier transmission
First Claim
1. A method of power management for a mobile station in a multi-carrier wireless network, the method comprising:
- establishing a primary connection between the mobile station and a base station by performing initial ranging to adjust power over a primary radio frequency (RF) carrier;
performing open-loop power control and thereby obtaining long-term link measurement of the primary RF carrier;
establishing a secondary connection between the mobile station and the base station by performing periodic ranging to adjust power over a secondary RF carrier, wherein the mobile station does not perform open-loop power control over the secondary RF carrier; and
performing close-loop power control and thereby adjusting transmission power over an activated RF carrier only when the activated RF carrier conveys on-going data transmission.
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Accused Products
Abstract
A method of power management for a mobile station in a multi-carrier wireless network is provided. A primary connection between the mobile station and a serving base station is first established by performing initial ranging over a primary radio frequency (RF) carrier. A secondary connection between the mobile station and the base station is then established by performing periodic ranging over a secondary RF carrier. To achieve efficient power management, the mobile station performs Open Loop Power Control and obtains long-term link measurement (CSI) of the primary carrier. The mobile station then adjusts carrier-specific parameters based on the primary carrier CSI. For RF carriers that convey on-going data traffic, Close Loop Power Control is updated per RF carrier. When the mobile station enters sleep mode operation, it receives traffic indication messages on the primary RF carrier and then dynamically wakes up one or more corresponding RF carriers for data reception.
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Citations
17 Claims
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1. A method of power management for a mobile station in a multi-carrier wireless network, the method comprising:
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establishing a primary connection between the mobile station and a base station by performing initial ranging to adjust power over a primary radio frequency (RF) carrier; performing open-loop power control and thereby obtaining long-term link measurement of the primary RF carrier; establishing a secondary connection between the mobile station and the base station by performing periodic ranging to adjust power over a secondary RF carrier, wherein the mobile station does not perform open-loop power control over the secondary RF carrier; and performing close-loop power control and thereby adjusting transmission power over an activated RF carrier only when the activated RF carrier conveys on-going data transmission. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile station in a multi-carrier wireless network, comprising:
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a first RF module operable over a primary RF carrier, wherein a primary connection with a base station is established by performing initial ranging to adjust power over the primary RF carrier, and wherein open-loop power control is performed to obtain long-term link measurement of the primary RF carrier; and a second RF module operable over a secondary RF carrier, wherein a secondary connection with the base station is established by performing periodic ranging to adjust power over the secondary RF carrier, wherein the mobile station does not perform open-loop power control over the secondary RF carrier, and wherein close-loop power control is performed over the second RF carrier only when the second RF carrier conveys on-going data transmission. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method, comprising:
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establishing a primary connection between a mobile station and a base station by performing initial ranging over a primary radio frequency (RF) carrier, wherein the mobile station performs open-loop power control over the primary RF carrier; and establishing a secondary connection between the mobile station and the base station by performing periodic ranging over a secondary RF carrier without performing initial ranging, wherein the mobile station does not perform open-loop power control over the secondary RF carrier; and performing close-loop power control and thereby adjusting transmission power over an activated RF carrier only when the activated RF carrier conveys on-going data transmission. - View Dependent Claims (14, 15, 16, 17)
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Specification