Mobile communication method and mobile station
AssigneeNtt Docomo, Inc.
InventorsAnil Umesh, Mikio Iwamura
Life of this patent
Estimating the term…
Abstract
A mobile communication method according to the present invention includes a step of transmitting, by a radio base station eNB, “RRC Connection Reconfiguration” instructing to add new DL CC to a mobile station UE, a step of calculating, by the mobile station UE, Power headroom on the basis of a path loss estimated from the new DL CC, in response to the “RRC Connection Reconfiguration”, and a step of transmitting, by the mobile station UE, “MAC Control Element” including the Power headroom to the radio base station eNB.
Claims4
A mobile communication method, in which a mobile station communicates with a radio base station by using a plurality of downlink carriers and a plurality of uplink carriers, each of which has a different carrier frequency, the method comprising:
- a step of transmitting, by the radio base station, an instruction signal instructing to add a new downlink carrier to the mobile station;
- a step of calculating, by the mobile station, information on difference between an estimated value of desired transmission power on an uplink shared channel and a maximum transmission power of the mobile station, on the basis of a path loss estimated from the new downlink carrier, in response to the instruction signal;
- and
- a step of transmitting, by the mobile station, control information including the information on difference, to the radio base station.
A mobile communication method, in which a mobile station communicates with a radio base station by using a plurality of downlink carriers and a plurality of uplink carriers, each of which has a different carrier frequency, the method comprising:
- a step of transmitting, by the radio base station, an instruction signal instructing a change of a predetermined downlink carrier to an active state to the mobile station;
- a step of calculating, by the mobile station, information on difference between an estimated value of desired transmission power on an uplink shared channel and a maximum transmission power of the mobile station, on the basis of a path loss estimated from the predetermined downlink carrier, in response to the instruction signal;
- and
- a step of transmitting, by the mobile station, control information including the information on difference, to the radio base station.
A mobile station configured to be capable of communicating with a radio base station by using a plurality of downlink carriers and a plurality of uplink carriers, each of which has a different carrier frequency, the mobile station comprising:
- a reception unit configured to receive an instruction signal instructing to add a new downlink carrier from the radio base station;
- a calculation unit configured to calculate information on difference between an estimated value of desired transmission power on an uplink shared channel and a maximum transmission power of the mobile station, on the basis of a path loss estimated from the new downlink carrier, in response to the instruction signal;
- and
- a transmission unit configured to transmit control information including the information on difference, to the radio base station.
A mobile station configured to be capable of communicating with a radio base station by using a plurality of downlink carriers and a plurality of uplink carriers, each of which has a different carrier frequency, the mobile station comprising:
- a reception unit configured to receive an instruction signal instructing a change of a predetermined downlink carrier to an active state from the radio base station;
- a calculation unit configured to calculate information on difference between an estimated value of desired transmission power on an uplink shared channel and a maximum transmission power of the mobile station, on the basis of a path loss estimated from the predetermined downlink carrier, in response to the instruction signal;
- and
- a transmission unit configured to transmit control information including the information on difference, to the radio base station.
Dependencies are inferred from the claim text.