US 8,027,698 B2Granted

Communication method

AssigneeMitsubishi Electric Corporation

InventorsKazuhito Niwano, Hideji Wakabayashi, Miho Maeda

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Abstract

For lack of a unique, specific and detailed specification for information on status of a mobile station to be notified by a mobile station to a fixed station, an operation may be varied from one mobile station to another in a communication system, thereby posing a problem for an efficient uplink scheduling. A communication method includes a transmission process multiplexing a transport channel for transmitting data from a high-order layer on a physical data channel and transmitting the multiplexed result to the fixed station, a status notification process notifying status information containing information on a transmission power headroom used for scheduling, and a transmission control process receiving the scheduling result and controlling the transmission process. The status information notification process includes notifying an index attached to each predetermined transmission power headroom level classified between upper and lower limit values of the transmission power headroom as the status information.

Claims2

Dependent claims

A communication method comprising:

sending, from a mobile station to a base station, mobile station transmission power headroom information reflecting headroom quantity of transmission power in the mobile station;
indicating uplink radio resources from said base station to said mobile station on a basis of said mobile transmission power headroom information;
and
sending data from said mobile station to said base station according to said indication of said uplink radio resources by said base station,
wherein a selected one of a first signaling value reflecting that headroom quantity of mobile station transmission power is contained within a first range having a predetermined first lower limit quantity and a predetermined upper limit quantity, and a second signaling value reflecting that headroom quantity of said mobile station transmission power is contained within a second range having a predetermined second lower limit quantity, is sent as said mobile station transmission power headroom information in the step of sending said mobile station transmission power headroom information.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/067,187Filed 22 Sep 2005
Published: US 2008/0254819 A116 Oct 2008
Granted: 27 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 52/367
With a discrete range or set of values, e.g. step size, ramping or offsets: power values between minimum and maximum limits, e.g. dynamic range
H04W 52/16
TPC algorithms: deriving transmission power values from another channel
H04W 72/20
Local resource management: control channels or signalling for resource management
H04W 28/22
Negotiating wireless communication parameters: negotiating communication rate