Mobile communication method, mobile station, and radio base station

• US 8,755,341 B2
• Filed: 04/22/2009
• Issued: 06/17/2014
• Est. Priority Date: 04/22/2008
• Status: Expired due to Fees

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Ishii, Hiroyuki, Umesh, Anil
• Primary Examiner(s): SEFCHECK, GREGORY B
• Application Number:
  US12/989,283
• Publication Number:
  US 20110116463A1
• Time in Patent Office: 1,882 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

In a mobile communication method according to the present invention, a mobile station (UE) transmits uplink data to a radio base station by using an uplink radio resource assigned to the mobile station by predetermined scheduling information, in a predetermined cycle. The method includes the steps: (A) notifying, to the mobile station (UE), the predetermined cycle and information on the uplink radio resource; (B) notifying, to the mobile station (UE), the predetermined scheduling information; and (C) transmitting uplink data in the predetermined cycle by using the uplink radio resource assigned by the predetermined scheduling information, the transmission starting at a certain point determined on the basis of the received predetermined scheduling information. In the step (C), the predetermined scheduling information is discarded, when the information on the uplink radio resource and information notified by the predetermined scheduling information are inconsistent with each other.

Claims

1. A mobile communication method in which a mobile station transmits uplink data to a radio base station by using an uplink radio resource assigned to the mobile station by predetermined scheduling information, in a predetermined cycle, the method comprising the steps of:

(A) notifying, to the mobile station, the predetermined cycle;

(B) notifying, to the mobile station, the predetermined scheduling information; and

(C) transmitting uplink data in the predetermined cycle by using a semi-persistent uplink radio resource assigned by the predetermined scheduling information, wherein the start of the transmission is determined by the mobile station on the basis of the received predetermined scheduling information, wherein

the step (C) is performed when information included in the predetermined scheduling information is in compliance with a pre-specified range for the predetermined scheduling information, and wherein

the pre-specified range is received at the mobile station from the base station by Radio Resource Control (RRC) message.

2. The mobile communication method according to claim 1, wherein

the predetermined scheduling information includes at least one of resource block assignment information, a modulation scheme, a data size, MCS information, transmission format information, transmission power control information, information on Cyclic Shift of Demodulation RS, and a CQI request.

3. A mobile station configured to transmit uplink data to a radio base station by using an uplink radio resource assigned to the mobile station by predetermined scheduling information, in a predetermined cycle, the mobile station comprising:

a receiver unit configured to receive the predetermined cycle from the radio base station; and

a communication unit configured to transmit uplink data in the predetermined cycle by using a semi-persistent uplink radio resource assigned by the predetermined scheduling information, wherein the start of the transmission is determined by the mobile station on the basis of the received predetermined scheduling information, wherein

the communication unit is configured to transmit the uplink data, when information notified by the predetermined scheduling information is in compliance with a pre-specified range for the predetermined scheduling information, and wherein

the pre-specified range is received at the mobile station from the base station by Radio Resource Control(RRC) message.

4. The mobile station according to claim 3, wherein

the predetermined scheduling information includes at least one of resource block assignment information, a modulation scheme, a data size, MCS information, transmission format information, transmission power control information, information on Cyclic Shift of Demodulation RS, and a CQI request.