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 over an activated primary radio frequency (RF) carrier;
establishing a secondary connection between the mobile station and the base station over an activated secondary RF carrier;
negotiating a set of sleep mode parameters for the primary connection for sleep mode operation having pre-negotiated alternating listening windows and sleep windows;
determining if traffic indication is enabled based on a traffic indication mode flag before entering sleep mode operation;
entering sleep mode operation and receiving a traffic indication message on the activated primary RF carrier during each listening window if traffic indication is enabled; and
waking up one or more activated secondary RF carriers for data reception indicated by the traffic indication message if traffic indication is enabled.
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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.
17 Citations
20 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 over an activated primary radio frequency (RF) carrier; establishing a secondary connection between the mobile station and the base station over an activated secondary RF carrier; negotiating a set of sleep mode parameters for the primary connection for sleep mode operation having pre-negotiated alternating listening windows and sleep windows; determining if traffic indication is enabled based on a traffic indication mode flag before entering sleep mode operation; entering sleep mode operation and receiving a traffic indication message on the activated primary RF carrier during each listening window if traffic indication is enabled; and waking up one or more activated secondary RF carriers for data reception indicated by the traffic indication message if traffic indication is enabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile station in a multi-carrier wireless network, comprising:
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one or more radio frequency (RF) modules operable over a primary RF carrier and a secondary RF carrier; and a sleep mode operation module that negotiates a set of sleep mode parameters with a base station for the primary RF carrier and thereby establishes sleep mode operation having pre-negotiated alternating listening windows and sleep windows, wherein the mobile station enters sleep mode and receives a traffic indication message on the primary RF carrier during each listening window if traffic indication is enabled based on a traffic indication mode flag, and wherein at least one of the one or more RF modules are waken up for data reception indicted by the traffic indication message if traffic indication is enabled. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. 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 over an activated primary radio frequency (RF) carrier; establishing a secondary connection between the mobile station and the base station over an activated secondary RF carrier; negotiating a set of sleep mode parameters comprising sleep cycle length, listening window length, and a traffic indication mode flag indicating whether traffic indication is enabled during each listening window; entering sleep mode operation and decoding a traffic indication message received on the activated primary RF carrier during each listening window if traffic indication is enabled; and waking up one or more activated secondary RF carriers for data reception if traffic indication is enabled and the traffic indication message indicates positive data traffic. - View Dependent Claims (18, 19, 20)
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Specification