JP2009022035A

2G

Title

TERMINAL DEVICE FOR CELLULAR WIRELESS SYSTEM AND METHOD OF CONTROLLING TRANSMISSION POWER AT BASE STATION

Application Number:

JP20080232456

Publication Date:

29-01-2009

Current Assignee:

Family ID:

Application Date:

10-09-2008

Declaring Company:

Publication Country:

US

Priority Date:

17-06-1996

Title

TERMINAL DEVICE FOR CELLULAR WIRELESS SYSTEM AND METHOD OF CONTROLLING TRANSMISSION POWER AT BASE STATION

Application Number:

JP20080232456

Family ID:

Publication Country:

US

Publication Date:

29-01-2009

Application Date:

10-09-2008

Priority Date:

17-06-1996

Current Assignee:

Declaring Company:

Abstract  Abstract

PROBLEM TO BE SOLVED: To allow a transmission power to be controlled with a small number of signals in a cellular wireless system taking into account a specific need of a packet switching link.

SOLUTION: A terminal device measures a control signal from a base station in a long break period between packets and prior connection establishment (30 31) and compares the signal power (R0) with a target level that the base station holds. The base station also informs the transmission power to the terminal device by the control signal and the terminal device determines the transmission power by correcting the power by a difference (t0-R0) between the target level and link quality measured (32). The link quality measured (RXQUAL) is also transmitted by a positive response message and the transmission power is changed at a transmission side so that the quality becomes a predetermined target level. The maximum change width is determined by the packet length. At packet transfer to the downlink the base station first uses the maximum power and then corrects it based on the measurement information in the acknowledgement.

COPYRIGHT: (C)2009JPO&INPIT

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.