[특허]Method for subscriber unit compressing and transmitting high speed data

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-007/212 H04J-003/16 H04J-004/00 H04J-003/12
출원번호	US-0093623 (2002-03-08)
발명자 / 주소	Kurtz, Scott David
출원인 / 주소	InterDigital Technology Corporation
대리인 / 주소	Volpe and Koenig, P.C.
인용정보	피인용 횟수 : 9 인용 특허 : 35

초록 ▼

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

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.

대표청구항 ▼

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

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. of service characteristics. 15. The method of claim 1, wherein the first data packet and the second data packet are IP packets. 16. The method of claim 1, wherein the first data packet and the second data packet are deencapsulated after they are received from a trunk line. 17. The method of claim 1, further comprising: extracting policy information from the first data packet; and adjusting the value of at least one of the set of quality of service characteristics based upon the extracted policy information. 18. The method of claim 1, wherein extracting the set of quality of service characteristics comprises extracting layer information from the first data packet, and determining the set of quality of service characteristics from stored information relating quality of service characteristics to layer information. 19. A line card for routing a micro-flow in a network comprising a plurality of network hops, the line card comprising the steps of: an interface, configured to receive at a network hop a first data packet and a second data packet; a micro flow classifier, in operative communication with the interface, configured to establish the first data packet as corresponding to a given micro flow, extract a set of quality of service characteristics from the first data packet; and a micro flow recognizer, in operative communication with the interface and the micro flow classifier, configured to retain the set of quality of service characteristics in association with the given micro flow, determine whether the second data packet corresponds to the given micro flow, and automatically associate the set of quality of service characteristics to the second data packet where it is determined that the second data packet corresponds to the given micro flow. 20. The line card of claim 19, wherein the micro flow recognizer determines whether the second data packet corresponds to the given micro flow by examining a set of information found in the second data packet. 21. The line card of claim 19, further comprising: a flow block table, in operative communication with the micro flow recognizer, configured to maintain a flow block that stores the set of quality of service characteristics. 22. The line card of claim 21, wherein the flow block table associates the set of quality of service characteristics to packets in the given micro flow. 23. The line card of claim 22, wherein network layer and transport layer information are retrieved from data packets and used to correlate them to the given micro flow. 24. The line card of claim 23, wherein a hash key is generated from the network layer and transport layer information, and the hash key is used to identify the flow block in the flow block table. 25. The line card of claim 19, wherein the set of quality of service characteristics includes a transmission rate constraint. 26. The line card of claim 19, wherein the set of quality of service characteristics includes a delay variation constraint. 27. The line card of claim 25, further comprising: a policing scheduler, configured to discard the second data packet where the determined rate for the second data packet exceeds the transmission rate constraint. 28. The line card of claim 27, wherein the determined rate is derived from an arrival rate for packets in the given micro flow into a switch corresponding to the network hop. 29. The line card of claim 19, wherein the set of quality of service characteristics are used to selectively apply a queuing technique to the given micro flow to adjust the transmission rate of the given micro flow. 30. The line card of claim 29, wherein the queuing technique includes weighted fair queuing. 31. The line card of claim 25, wherein path information for the given micro flow is retrieved prior to comparing the determined rate to the transmission rate constraint. 32. The line card of claim 19, further comprising: an egress micro flow manager, configured to identify a next network hop by d

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