发明授权
- 专利标题: Methods for calibrating radio-frequency receivers using code division multiple access test equipment
- 专利标题(中): 使用码分多址测试设备校准射频接收机的方法
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申请号: US12732108申请日: 2010-03-25
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公开(公告)号: US08718567B2公开(公告)日: 2014-05-06
- 发明人: Vishwanath Venkataraman , Justin Gregg , Wassim El-Hassan
- 申请人: Vishwanath Venkataraman , Justin Gregg , Wassim El-Hassan
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Treyz Law Group
- 代理商 G. Victor Treyz; Jennifer Luh
- 主分类号: H04B17/00
- IPC分类号: H04B17/00 ; H03C1/62
摘要:
Wireless test equipment may be used to perform over-the-air testing of user equipment. The user equipment may contain an antenna and a receiver. The wireless test equipment may contain a call box that performs network-level testing by sending and receiving protocol-compliant network messages. The call box may transmit a radio-frequency test signal at a predetermined power. The antenna in the user equipment may receive the radio-frequency test signal and may provide the received radio-frequency test signal to the input of the receiver. The call box may send a network message such as a code-division-multiple-access intercode handover command to the user equipment to direct the user equipment to measure the received radio-frequency test signal power at the input of the receiver. The measured power may be transmitted to the call box as part of a pilot measurement message indicator, using an intercode handover command, or using other network messages.
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