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Channel assigning device and method using quasi-orthogonal code in a CDMA communication system

  • US 6,504,832 B1
  • Filed: 10/19/1999
  • Issued: 01/07/2003
  • Est. Priority Date: 10/19/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A channel assigning method for a base station in a CDMA communication system, comprising the steps of:

  • determining the states of orthogonal codes and quasi-orthogonal code masks when a channel is assigned, selecting an available quasi-orthogonal code mask and an orthogonal code index if it is determined that a quasi-orthogonal code should be used, and generating the quasi-orthogonal code;

    assigning the generated quasi-orthogonal code to a forward link dedicated channel;

    generating a channel assignment message including the selected quasi-orthogonal code mask number and the orthogonal code index; and

    transmitting the channel assignment message on a different channel to a mobile station.

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