发明申请
- 专利标题: MULTIPLE ACCESS WIRELESS COMMUNICATIONS SYSTEM USING A MULTI-SECTOR CONFIGURATION
- 专利标题(中): 使用多部门配置的多路访问无线通信系统
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申请号: US12119774申请日: 2008-05-13
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公开(公告)号: US20080291856A1公开(公告)日: 2008-11-27
- 发明人: Junyi Li , Rajiv Laroia , Frank Lane
- 申请人: Junyi Li , Rajiv Laroia , Frank Lane
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 主分类号: H04B7/212
- IPC分类号: H04B7/212
摘要:
Power control methods and apparatus for use in a sectorized cell of an OFDM communications system are described. Each sector of a cell uses the same frequencies and transmission times and is synchronized with the other sectors in the cell in terms of tone frequencies used at any given time and symbol transmission times. Tones are allocated to channels in each cell in the same manner so that each channel in a sector has a corresponding channel in another sector. Power differences between channels in different sectors are maintained to be within a pre-selected power difference. Different channels in a cell are assigned different power levels. Wireless terminals are assigned to channels based on channel feedback information. Wireless terminals with poor channel conditions are allocated to higher power channels than wireless terminals with good channel conditions. Lower power channels often include more tones per symbol time than high power channels.
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