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Method and system for mobile communications

  • US 7,664,507 B2
  • Filed: 04/06/2006
  • Issued: 02/16/2010
  • Est. Priority Date: 04/24/1997
  • Status: Expired due to Fees
First Claim
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1. A radio mobile communication system wherein a plurality of channels can be established on a single carrier frequency by code division multiple access, characterized in that the system comprises a plurality of assignable code resources, each of code resources corresponding to a certain bandwidth and being independent of the other code resources;

  • and reassigning means for reassigning a part of an assignable code resource to one of the channels to which a part of another assignable code resource is already assigned if there is not an unused code resource corresponding to a bandwidth suitable for a necessary transmission rate when assigning an unused assignable code resource to one of the channels in accordance with the necessary transmission rate,wherein at least one standard code resource corresponding to a predetermined bandwidth is preselected and the system comprises assignment-possibility-determining means for determining at predetermined moments if there is at least one unused standard code resource or not, the reassigning means reassigning a part of an assignable code resource to one of the channels to which a part of another assignable code resource is already assigned until an unused standard code resource is reserved if the determination result by the assignment possibility determining means has been negative.

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