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US 7,480,517 B2Granted
Method of power control in a wireless communication system
AssigneeMotorola, Inc.
InventorsJonathan H. Gross, Murali Ranganathan
Life of this patent
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Abstract
A method of power control in a 3G wireless communication system (100) incorporating fast forward power control, may include setting an initial base station transmit power boundary (402) and an initial signal-to-noise ratio boundary (502). A mobile station (102) may send a forward link FER measurement to a base station (106). The base station may perform at least one of a base station transmit power boundary adjustment (403) and a mobile station signal-to-noise ratio boundary adjustment (503) based on the forward link FER measurement received from the mobile station, thereby imposing dynamic constraints on the fast forward power control operation.
Claims18
A method of power control in a 3G wireless communication system, comprising:
- a mobile station communicating a forward link Frame Error Rate (FER) measurement to a base station on a reverse link;
- the base station performing at least one of a base station transmit power boundary adjustment and a mobile station signal-to-noise ratio boundary adjustment based on the forward link FER measurement received from the mobile station, wherein the base station transmit power boundary adjustment comprises:
- if the forward link FER measurement is above an FER threshold value, and if a base station maximum transmit power setpoint is not at a maximum transmit power ceiling, increasing the base station maximum transmit power setpoint;
- if the forward link FER measurement is below the FER threshold value and if the base station maximum transmit power setpoint is not at a maximum transmit power floor, decreasing the base station maximum transmit power setpoint;
- and wherein the mobile station signal-to-noise ratio boundary adjustment comprises:
- if the forward link FER measurement is above the FER threshold value, and if a maximum signal-to-noise ratio target setpoint is not at a maximum signal-to-noise ratio ceiling, increasing the maximum signal-to-noise ratio target setpoint;
- and
- if the forward link FER measurement is below the FER threshold value, and if the maximum signal-to-noise ratio target setpoint is not at a maximum signal-to-noise ratio floor, decreasing the maximum signal-to-noise ratio target setpoint.
5 more elements
A method of power control in a 3G wireless communication system, comprising:
- setting an initial base station transmit power boundary and an initial signal-to-noise ratio boundary;
- a mobile station communicating a forward link Frame Error Rate(FER) measurement to a base station on a reverse link;
- the base station performing at least one of a base station transmit power boundary adjustment and a mobile station signal-to-noise ratio boundary adjustment based on the forward link FER measurement received from the mobile station, wherein the base station transmit power boundary adjustment comprises:
- adjusting the initial base station transmit power boundary to a second base station transmit power boundary;
- and
- wherein the mobile station signal-to-noise ratio boundary adjustment comprises:
- adjusting the initial signal-to-noise ratio boundary to a second signal-to-noise ratio boundary, and
- wherein the step of adjusting the initial base station transmit power boundary comprises:
- if the forward link FER measurement is above an FER threshold value, and if a base station maximum transmit power setpoint is not at a maximum transmit power ceiling, increasing the base station maximum transmit power setpoint;
- and
- if the forward link FER measurement is below the FER threshold value and if the base station maximum transmit power setpoint is not at a maximum transmit power floor, decreasing the base station maximum transmit power setpoint.
8 more elements
A method of power control in a 3G wireless communication system, comprising:
- setting an initial base station transmit power boundary and an initial signal-to-noise ratio boundary;
- a mobile station communicating a forward link Frame Error Rate (FER) measurement to a base station on a reverse link;
- the base station performing at least one of a base station transmit power boundary adjustment and a mobile station signal-to-noise ratio boundary adjustment based on the forward link FER measurement received from the mobile station, wherein the base station transmit power boundary adjustment comprises:
- adjusting the initial base station transmit power boundary to a second base station transmit power boundary;
- and
- wherein the mobile station signal-to-noise ratio boundary adjustment comprises:
- adjusting the initial signal-to-noise ratio boundary to a second signal-to-noise ratio boundary wherein the step of adjusting the initial signal-to-noise ratio boundary comprises:
- if the forward link FER measurement is above an FER threshold value, and if a maximum signal-to-noise ratio target setpoint is not at a maximum signal-to-noise ratio ceiling, increasing the maximum signal-to-noise ratio target setpoint;
- and
- if the forward link FER measurement is below the FER threshold value, and if the maximum signal-to-noise ratio target setpoint is not at a maximum signal-to-noise ratio floor, decreasing the maximum signal-to-noise ratio target setpoint.
7 more elements
A computer-readable medium containing computer instructions for instructing a processor to perform a method of power control in a 3G wireless communication system, comprising:
- setting an initial base station transmit power boundary and an initial signal-to-noise ratio boundary;
- a mobile station communicating a forward link Frame Error Rate (FER) measurement to a base station on a reverse link;
- the base station performing at least one of a base station transmit power boundary adjustment and a mobile station signal-to-noise ratio boundary adjustment based on the forward link FER measurement received from the mobile station, wherein the base station transmit power boundary adjustment comprises:
- adjusting the initial base station transmit power boundary to a second base station transmit power boundary;
- and
- wherein the mobile station signal-to-noise ratio boundary adjustment comprises:
- adjusting the initial signal-to-noise ratio boundary to a second signal-to-noise ratio boundary wherein adjusting the initial signal-to-noise ratio boundary comprises:
- if the forward link FER measurement is above an FER threshold value, and if a maximum signal-to-noise ratio target setpoint is not at a maximum signal-to-noise ratio ceiling, increasing the maximum signal-to-noise ratio target setpoint;
- and
- if the forward link FER measurement is below the FER threshold value, and if the maximum signal-to-noise ratio target setpoint is not at a maximum signal-to-noise ratio floor, decreasing the maximum signal-to-noise ratio target setpoint.
7 more elements
A computer-readable medium containing computer instructions for instructing a processor to perform a method of power control in a 3G wireless communication system, comprising:
- setting an initial base station transmit power boundary and an initial signal-to-noise ratio boundary;
- a mobile station communicating a forward link Frame Error Rate (FER) measurement to a base station on a reverse link;
- the base station performing at least one of a base station transmit power boundary adjustment and a mobile station signal-to-noise ratio boundary adjustment based on the forward link FER measurement received from the mobile station, wherein the base station transmit power boundary adjustment comprises:
- adjusting the initial base station transmit power boundary to a second base station transmit power boundary wherein adjusting the initial base station transmit power boundary comprises:
- if the forward link FER measurement is above an FER threshold value, and if a base station maximum transmit power setpoint is not at a maximum transmit power ceiling, increasing the base station maximum transmit power setpoint;
- and
- if the forward link FER measurement is below the FER threshold value and if the base station maximum transmit power setpoint is not at a maximum transmit power floor, decreasing the base station maximum transmit power setpoint, and
- wherein the mobile station signal-to-noise ratio boundary adjustment comprises:
- adjusting the initial signal-to-noise ratio boundary to a second signal-to-noise ratio boundary.
6 more elements
Dependencies are inferred from the claim text.