[특허]Dynamic forward error correction in UTRA systems

[미국특허] Dynamic forward error correction in UTRA systems 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-007/216
출원번호	US-0329308 (2002-12-23)
발명자 / 주소	Marinier, Paul Cuffaro, Angelo Cave, Christopher
출원인 / 주소	InterDigital Technology Corporation
대리인 / 주소	Volpe and Koenig, P.C.
인용정보	피인용 횟수 : 9 인용 특허 : 16

초록 ▼

A UE transmitter in a 3G UTRAN wireless communication system performs dynamic link adaptation (DLA) with dynamic semi-static parameters for overcoming RF propagation difficulties. Separate transport channels (DCH) are defined for each semi-static parameter, including forward error coding (FEC) coding type and rate. When data rate is decreased during DLA, a TFC is selected having the desired FEC coding type and rate. Since this adjustment occurs at each TTI, mapping of data packet codes in each timeslot on the physical channel includes the benefit of FEC rather than reduced data rate alone. This permits improved SIR in a timeslot that may be experiencing RF propagation difficulties during the UL mapping process.

대표청구항 ▼

1. In a time division duplex universal mobile telecommunications system terrestrial radio access network wireless communication system having user equipment (UEs) communicating data transmissions via multiplexed transport channels in combinations thereof on a coded composite transport channel (CCTrCh), a method for dynamically varying the combinations of transport channels, comprising:configuring mutually exclusive dedicated transport channels based on semi-static transport parameters; and mapping data to a channel selectively based on a preferred semi-static transport parameter, wherein the mutually exclusive dedicated transport channels are not multiplexed together onto the CCTrCh. 2. The method of claim 1, whereby the configuring of transport channels is performed by a radio network controller further comprising:defining transport format combinations (TFCs) each with a mutually exclusive semi-static parameter; storing the TFCs in a lookup table. 3. The method of claim 2, whereby the UE medium access control layer determines the appropriate semi-static parameter based on UE transmission power, further comprising:dynamically selecting a TFC with the desired semi-static parameter at every transmission time interval. 4. The method of claim 1 wherein the semi-static transport parameter is forward error correction coding type and rate.5. The method of claim 1 wherein the semi-static transport parameter is cyclic redundancy code size.6. The method of claim 1 wherein the semi-static transport parameter is rate matching.7. The method of claim 1 wherein the semi-static transport parameters are optimized for the transmission power conditions of the UE.8. A method for dynamically varying the combinations of transport channels in a time division duplex universal mobile telecommunications system terrestrial radio access network wireless communication system having user equipment (UEs) communicating data transmissions via multiplexed transport channels in combinations thereof on a coded composite transport channel, the method comprising the steps of:configuring mutually exclusive dedicated transport channels based on semi-static transport parameters, the configuring step being performed by a radio network controller; mapping data to a channel selectively based on a preferred semi-static transport parameter; defining transport format combinations (TFCs) each with a mutually exclusive semi-static parameter; and storing the TFCs in a lookup table. 9. The method of claim 8, whereby the UE medium access control layer determines the appropriate semi-static parameter based on UE transmission power, the method further comprising the step of:dynamically selecting a TFC with the desired semi-static parameter at every transmission time interval.

이 특허에 인용된 특허 (16) 인용/피인용 타임라인 분석

Peter Lindskog SE; Ke Wang Helmersson SE; Anneli Crona SE, Adaptive control of telecommunications systems with measurements of varying time-delays.
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He Allen, Channel grouping system and method for a wireless communications system.
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Qing-An Zeng JP, Hand off control for reducing rate of occurrence of forced disconnection of communication.
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Kokko Ismo,FIX ; Rikkinen Kari,FIX, Load control method and apparatus for CDMA cellular system having circuit and packet switched terminals.
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Willenegger, Serge; Lundby, Stein A., Method and apparatus for multiplexing high-speed packet data transmission with voice/data transmission.
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Shiu, Da-Shan; Agrawal, Avneesh, Method and apparatus for performing reverse rate matching in a CDMA system.
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Cuffaro Angelo,CAX ; Wingrowicz Edward,SEX, Method and device for simultaneously recording and presenting radio quality parameters and associated speech.
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Mun, Hyun-Jung; Kim, Kyou-Woong, Method for controlling gated transmission of dedicated channel in W-CDMA communication system.
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Hwang, In Tae; Shin, Sang Rim; Ok, Myoung Jin, Method for formatting signal in mobile communication system.
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Lucidarme, Thierry; Lescuyer, Pierre, Method for transmitting radio signals, radio communication access network and terminal using same.
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Silventoinen, Marko; Posti, Harri; Jokinen, Harri; Ryynanen, Jari, Method of facilitating transmission level measurement, and base station.
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Turcotte Eric,CAX ; Cuffaro Angelo,CAX, Method of updating a list of digital control channels (DCCH) in a mobile station in a radio telecommunications network.
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Walter Muller SE, Power control based on combined quality estimates.
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Vayanos, Alkinoos Hector; Willenegger, Serge; Blanz, Josef, Transport format combination selection for compressed mode in a W-CDMA system.
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Freiberg, Lorenz Fred; Muechkenheim, Jens, Universal mobile telephone system network with improved rate matching method.
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Terry, Stephen E., Wireless communication system with selectively sized data transport blocks.
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이 특허를 인용한 특허 (9) 인용/피인용 타임라인 분석

Choi, Hyung-Nam; Kahlstatt, Harald, Data link layer protocol unit, mobile radio device and method for mapping data which are to be transmitted using a mobile radio device from at least one logical channel, and control data which are to be transmitted, onto at least one transport channel.
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Krinsky, Jeffrey; Khosravi-Sichani, Bahman, Latency reduction and range extension system for radio networks.
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Krinsky, Jeffrey; Khosravi-Sichani, Bahman, Latency reduction and range extension system for radio networks.
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Fan, Xiaoan; Liu, Guang; Li, Bo; Hou, Yunzhe, Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets.
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Fan, Xiaoan; Liu, Guang; Li, Bo; Hou, Yunzhe, Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets.
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Fan, Xiaoan; Liu, Guang; Li, Bo; Hou, Yunzhe, Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets.
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Fan, Xiaoan; Liu, Guang; Li, Bo; Hou, Yunzhe, Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets.
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Cave,Christopher; Rudolf,Marian, Method for providing fast feedback information for random access channel in a wireless communication system.
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Regan, Joe; Kompella, Vach; Hu, Wenao, OAM echo messaging to verify a service-based network distribution path.
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A	생활필수품
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[미국특허] Dynamic forward error correction in UTRA systems 원문보기