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Coexisting GSM and CDMA wireless telecommunications networks

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/20
출원번호 US-0604786 (1996-02-23)
발명자 / 주소
  • Agre Daniel H.
출원인 / 주소
  • QUALCOMM Inc.
대리인 / 주소
    Miller
인용정보 피인용 횟수 : 77  인용 특허 : 30

초록

A novel and improved method and apparatus for switching the radio interface layer of a wireless telephone call from code division multiple access (CDMA) cellular to GSM time division multiple access (TDMA) cellular during the course of that telephone call or other communication is described. In acco

대표청구항

[ I claim:] [1.] A method of switching a subscriber unit in a wireless telecommunications system from a code division multiple access radio frequency signal interface to Global System for Mobile communication time division multiple access radio frequency signal interface during a telephone call, com

이 특허에 인용된 특허 (30)

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  4. , CDMA frequency allocation.
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  8. Gilhousen Klein S. (Bozeman MT) Karmi Gadi (La Jolla CA) Tiedemann ; Jr. Edward G. (San Diego CA) Holcman Alejandro Raul (San Diego CA), Method and apparatus for handoff between different cellular communications systems.
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