发明名称 |
Method for subscriber unit compressing and transmitting high speed data |
摘要 |
Two related voiceband compression techniques are employed in order to enable an RF telecommunications subscriber unit to accommodate data signals of high speed voiceband modems and FAX machines. A High Speed Codec enables the subscriber unit to pass voiceband modem and FAX transmissions at up to 9.6 kb/s. An Ultra-High Speed Codec supports voiceband modem and FAX transmissions up to 14.4 kb/s. The High Speed Codec operates using three 16-phase RF slots or four 8-phase RF slots, and the Ultra-High Speed Codec operates using four 16-phase RF slots. Because these codecs transmit information over several RF slots which can be contiguous, the slots within RF communication channels are dynamically allocated. The Dynamic Time slot/Bandwidth Allocation feature detects and monitors the data transmission and forms a data channel from the necessary number of slots.
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申请公布号 |
US6574207(B2) |
申请公布日期 |
2003.06.03 |
申请号 |
US20020093623 |
申请日期 |
2002.03.08 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
KURTZ SCOTT DAVID |
分类号 |
H03M7/30;G10L19/04;G11C27/02;H03M13/19;H04B1/66;H04L1/00;H04L5/06;H04L25/49;H04M11/06;H04N1/41;H04W28/06;(IPC1-7):H04B7/212;H04J3/16;H04J4/00;H04J3/12 |
主分类号 |
H03M7/30 |
代理机构 |
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代理人 |
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地址 |
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