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Mobile communication system, handover control method, radio base station, and mobile station

  • US 9,730,130 B2
  • Filed: 11/21/2007
  • Issued: 08/08/2017
  • Est. Priority Date: 12/20/2006
  • Status: Active Grant
First Claim
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1. A mobile communication system comprising a mobile station, a radio base station as a handover source of the mobile station, and a radio base station as a handover target of the mobile station, whereinthe mobile station comprises a first transmission unit that transmits to the base station as the handover source, measurement reports including first radio quality information between the mobile station and the radio base station as the handover target,the radio base station as the handover source which averages the first radio quality information included in the measurement reports received from the mobile station to provide an averaged radio quality information and comprises a second transmission unit that transmits the averaged radio quality information to the radio base station as the handover target after the radio base station as the handover source determines that the mobile station is to be handed over from the radio base station as the handover source to the radio base station as the handover target, andthe radio base station as the handover target comprises a reception unit that receives the context information from the radio base station as the handover source,wherein the radio quality information is measured by the mobile station,wherein the radio base station as the handover source configured to request the mobile station to send a second radio quality information, wherein an accuracy of the second radio quality information is higher than that of the first radio quality information, andwherein the radio base station as the handover source transmits a context information to the radio base station as the handover target, after the radio base station as the handover source transmits the averaged radio quality information to the radio base station as the handover target.

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