Radio communication base station device and radio communication method

• US 8,548,524 B2
• Filed: 12/28/2011
• Issued: 10/01/2013
• Est. Priority Date: 06/26/2006
• Status: Active Grant

• Current Assignee: Godo Kaisha IP Bridge 1 (IP Bridge, Inc.)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Aoyama, Takahisa, Fukui, Akito, Petrovic, Dragan
• Primary Examiner(s): LE, DANH C
• Application Number:
  US13/339,046
• Publication Number:
  US 20120100896A1
• Time in Patent Office: 643 Days
• Field of Search: 455/550.1, 455/561, 455/422.1, 370/328
• US Class Current: 455/561
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• CPC Class Codes: H04W 36/302 due to low signal strength
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

It is possible to provide a radio communication terminal device, a radio communication base station device, and a radio communication method capable of rapidly completing a handover even during DRX/DTX. In the devices and the method, a terminal (100) transmits a quality measurement result to a base station (150) at an Active interval. Here, the terminal (100) sets the DRX/DTX interval to a short interval since performance of a handover is predicted. The base station (150) which has received the quality measurement result transmitted from the terminal (100) recognizes that the terminal has set the DRX/DTX interval to a short interval and transmits a handover instruction to the terminal (100) at the Active interval, considering the shortened DRX/DTX interval.

Claims

1. A radio communication base station comprising:

a transmission unit that transmits a control signal to a radio communication terminal, wherein the control signal includes a short timer and a long timer that is longer than the short timer for controlling a discontinuous reception cycle that consists of an active period and an inactive period;

a reception unit that receives a measurement report from the radio communication terminal during the active period; and

a discontinuous reception control unit that controls the discontinuous reception cycle based on the short timer or the long timer included in the transmitted control signal,

wherein, when the measurement report is received during the active period, the discontinuous reception control unit uses the short timer for controlling the discontinuous reception cycle after the active period expires.

2. The radio communication base station according to claim 1, wherein the discontinuous reception control unit uses the long timer for controlling the discontinuous reception cycle after the short timer expires.

3. A radio communication method performed by a radio communication base station comprising:

transmitting a control signal to a radio communication terminal, wherein the control signal includes a short timer and a long timer that is longer than the short timer for controlling a discontinuous reception cycle that consists of an active period and an inactive period;

receiving a measurement report from the radio communication terminal during the active period; and

controlling the discontinuous reception cycle based on the short timer or the long timer included in the transmitted control signal,

wherein, when the measurement report is received during the active period, the short timer is used for controlling the discontinuous reception cycle after the active period expires.

4. The method according to claim 3, wherein the long timer is used for the discontinuous reception cycle after the short timer expires.