发明名称 |
IMPROVED FRAME STRUCTURE FOR A COMMUNICATION SYSTEM USING ADAPTIVE MODULATION |
摘要 |
A system and method for mapping a combined frequency division duplexing (FDD) Time Division Multiplexing (TDM)/Time Division Multiple Access (TDMA) downlink subframe for use with half-duplex and full-duplex terminals in a communication system. Embodiments of the downlink subframe vary Forward Error Correction (FED) types for a given modulation scheme as well as support the implementation of a smart antennae at a base station in the communication system. Embodiments of the system are also used in a TDD communication system to support the implementation of smart antennae. A scheduling algorithm allows TDM and TDMA portions of a downlink to efficiently co-exist in the same downlink subframe and simultaneously support full and half-duplex terminals. The algorithm further allows the TDM of multiple terminals in a TDMA burst to minimize the number of map entries in a downlink map. The algorithm limits the number of downlink map entries to not exceed 2n + 1, where n is the number of DL PHY modes (modulation/FEC combinations) employed by the communication system. |
申请公布号 |
CA2899094(C) |
申请公布日期 |
2016.08.30 |
申请号 |
CA20012899094 |
申请日期 |
2001.11.15 |
申请人 |
WI-LAN INC. |
发明人 |
CHEN, AN;KLEIN, ISRAEL J.;STANWOOD, KENNETH L.;LIN, GEORGE |
分类号 |
H04W72/04;H04B7/26;H04L1/00;H04W28/04;H04W56/00;H04W72/14;H04W80/02 |
主分类号 |
H04W72/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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