# US 2008/0186941 A1 · Communication Device, a Method of Operating a Communication Device and a Communication System

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- Number: US 2008/0186941 A1
- Document ID: US20080186941A1
- Status: Published application
- Kind: A1
- Application number: 11/814,563
- Filed: 2006-01-20
- Published: 2008-08-07
- Earliest claimed: 2005-01-22
- Assignees: NXP B.V.
- Inventors: Matthew P.J. Baker; Paul Bucknell
- Web page: https://patentgrep.com/patent/US20080186941A1

## CPC

- H04W 28/22: Negotiating communication rate
- H04W 52/04: Transmission power control [TPC]
- H04W 56/00: Synchronisation arrangements
- H04W 92/10: between terminal device and access point, i.e. wireless air interface
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A mobile station (100) in a mobile communication system obeys commands received from a serving base station (300) to decrease its transmission rate, and obeys commands received from the serving base station (300) to increase its transmission rate except when a predetermined time period is in progress. It obeys commands received from a non-serving base station (200, 400) to decrease its transmission rate, it initiates the predetermined time period in response to receiving such commands, and it terminates the predetermined time period in response to a further command from the same non-serving base station (200, 400).

## Claims

### Claim 1

A method of operating a first communication device in a communication system comprising a plurality of stations, the method comprising:
in response to receiving a first command from a first station, decreasing a parameter value and commencing the timing of a first predetermined time period;
in response to receiving a second command from the first station, terminating the timing of the first predetermined time period if the timing is in progress;
in response to receiving a first command from a second station, decreasing the parameter value; and
in response to receiving a second command from the second station, increasing the parameter value unless the timing of the first predetermined time period is in progress.

### Claim 2 (depends on 1)

A method as claimed in claim 1, further comprising:
in response to receiving a first command from a third station, decreasing a parameter value and commencing the timing of a second predetermined time period;
in response to receiving a second command from the third station, terminating the timing of the second predetermined time period if the timing of the second predetermined time period is in progress;
in response to receiving the second command from the second station, increasing the parameter value unless the timing of at least one of the first and second predetermined time period is in progress.

### Claim 3 (depends on 1)

A method as claimed in claim 1, wherein the increasing and decreasing of the parameter value is indicative of an adjustment of at least one of: transmission rate; transmit power; modulation scheme; number of transmitted carrier frequencies; number of transmitted time slots; number of transmitted spreading codes; spreading factor; code rate.

### Claim 4

A communication device comprising: means for receiving commands from a plurality of stations; adjustment means for adjusting a parameter value in response to the received commands; and timing means for timing one or more predetermined time periods; wherein
in response to the receipt of a first command from a first station, the adjustment means is adapted to decrease the parameter value and the timing means is adapted to commence the timing of a first predetermined time period;
in response to the receipt of a second command from the first station, the timing means is adapted to terminate the timing of the first predetermined time period;
in response to the receipt of a first command from a second station, the adjustment means is adapted to decrease the parameter value; and
in response to the receipt of a second command from the second stations, the adjustment means is adapted to increase the parameter value unless the timing of the first predetermined time period by the timing means in progress.

### Claim 5 (depends on 4)

A communication device as claimed in claim 4, wherein
in response to the receipt of a first command from a third station, the adjustment means is adapted to decrease the parameter value and the timing means is adapted to commence the timing of a second predetermined time period;
in response to the receipt of a second command from the third station, the timing means is adapted to terminate the timing of the second predetermined time period;
in response to the receipt of the second command from the second stationary, the adjustment means is adapted to increase the parameter value unless the timing of at least one of the first and second predetermined time periods by the timing means is in progress.

### Claim 6 (depends on 4)

A method as claimed in claim 4, wherein the increase and decrease of the parameter value is indicative of an adjustment of at least one of: transmission rate; transmit power; modulation scheme; number of transmitted carrier frequencies; number of transmitted time slots; number of transmitted spreading codes; spreading factor; code rate.

### Claim 7 (depends on 4)

A communication system comprising a communication device according to claim 4 and a plurality of stations for communication with the communication device.