SETTING A TRANSMISSION POWER LEVEL FOR A MOBILE UNIT

• US 20100150207A1
• Filed: 02/25/2010
• Published: 06/17/2010
• Est. Priority Date: 01/04/1995
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Lomp, Gary R.
• Granted Patent: US 7,961,822 B2
• Time in Patent Office: Days
• US Class Current: 375/130
• CPC Class Codes: H03G 3/3042 in modulators, frequency-changers, transmitters or power amplifiers transmission power control in bidirectional transmission systems H04W52/04
• CPC Class Codes: H03G 3/3047 for intermittent signals, e.g. burst signals
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 1/709 Correlator structure
• CPC Class Codes: H04B 1/7093 Matched filter type
• CPC Class Codes: H04B 1/7115 Constructive combining of multi-path signals, i.e. RAKE receivers
• CPC Class Codes: H04B 1/712 Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
• CPC Class Codes: H04B 2201/70707 Efficiency-related aspects
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04J 13/10 Code generation
• CPC Class Codes: H04J 13/16 Code allocation
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/22 taking into account previous information or commands
• CPC Class Codes: H04W 52/221 using past power control commands
• CPC Class Codes: H04W 52/225 Calculation of statistics, e.g. average, variance
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/36 with a discrete range or set of values, e.g. step size, ramping or offsets
• CPC Class Codes: H04W 52/362 Aspects of the step size
• CPC Class Codes: H04W 52/367 : Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/52 : using AGC [Automatic Gain Control] circuits or amplifiers
• CPC Class Codes: H04W 52/54 : Signalisation aspects of the TPC commands, e.g. frame structure

Abstract

A spread signal is produced having an adjustable spread spectrum. A data signal is provided for transmission. The data signal is processed to have a first spread spectrum. The processed first spread spectrum data signal is filtered to have one out of a plurality of spread spectrums. The filtering capable of producing a signal having a spread spectrum of any of the plurality of spread spectrums. The filtered one spread spectrum data signal is transmitted.

Claims

1. A mobile station comprising:

at least one antenna device configured to receive a plurality of power commands;

algorithm device circuitry configured to implement a plurality of power control algorithms, a first of the plurality of power control algorithms increases or decreases a transmission power level by a fixed amount for each received power command and a second of the plurality of power control algorithms compares the plurality of power commands to determine an increase or decrease in the transmission power level.

2. The mobile station of claim 1 further comprising a variable gain device configured to adjust the transmission power level in response to the algorithm device circuitry.

3. The mobile station of claim 1 further comprising a despreader for despreading a received spread-spectrum channel, the received spread-spectrum channel carrying the plurality of power commands, the plurality of power commands being multiplexed in the received spread-spectrum channel;

and

a demultiplexer configured to demultiplex the plurality of power commands from the despread received spread-spectrum channel.

4. The mobile station of claim 1 wherein the second of the plurality of power control algorithms increases or decreases by a first amount on a condition that the plurality of compared power commands are the same and not by the first amount on a condition that the plurality of compared power commands are different.

5. A method for setting a transmission power level by a mobile station comprising:

receiving a plurality of power commands;

implementing a plurality of power control algorithms, wherein a first of the plurality of power control algorithms increases or decreases the transmission power level by a fixed amount for each received power command and a second of the plurality of power control algorithms compares the plurality of power commands to determine an increase or decrease in the transmission power level.

6. The method of claim 5 further comprising adjusting the transmission power level in response to the plurality of power commands.

7. The method of claim 5 further comprising:

despreading a received spread-spectrum channel, the received spread-spectrum channel carrying the plurality of power commands, the plurality of power commands being multiplexed in the received spread-spectrum channel; and

demultiplexing the plurality of power commands from the despread received spread-spectrum channel.

8. The method of claim 5 wherein the second of the plurality of power control algorithms increases or decreases by a first amount on a condition the plurality of compared power commands are the same and not by the first amount on a condition the plurality of compared power commands are different.