Increasing capacity in wireless communications
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04L-012/26
H04W-052/44
H04L-001/18
H04W-052/58
H04L-001/16
H04L-001/00
출원번호
US-0424019
(2009-04-15)
등록번호
US-9408165
(2016-08-02)
발명자
/ 주소
Jou, Yu-Cheun
Black, Peter J.
Attar, Rashid Ahmed A.
출원인 / 주소
QUALCOMM Incorporated
대리인 / 주소
DeHaemer, Jr., Michael J.
인용정보
피인용 횟수 :
1인용 특허 :
106
초록▼
Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are syste
Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment, techniques for reverse link early termination are also provided.
대표청구항▼
1. A method of processing information according to a plurality of rates, the method comprising: receiving a current frame containing traffic information;determining whether the current frame is of a critical frame type;if the current frame is determined to be of a critical frame type, processing the
1. A method of processing information according to a plurality of rates, the method comprising: receiving a current frame containing traffic information;determining whether the current frame is of a critical frame type;if the current frame is determined to be of a critical frame type, processing the traffic information as a result for transmission;if the current frame is determined to be not of a critical frame type, determining whether the current frame is guaranteed for transmission based at least partially on at least one parameter of the current frame;if the current frame is determined to be not guaranteed for transmission, processing a null rate frame as the result for transmission, the null rate frame having a reduced information bitrate compared to the traffic information; andtransmitting the result of said processing for transmission. 2. The method of claim 1, the receiving the current frame comprising receiving the current frame from a vocoder at a modem. 3. The method of claim 1, further comprising: if the current frame is determined to be guaranteed for transmission, processing the traffic information for transmission. 4. The method of claim 3, the traffic information having a frame type selected from a group consisting of full rate frame type, half rate frame type, quarter rate frame type, and eighth rate frame type. 5. The method of claim 4, the critical frame type comprising any frame type among the full rate frame type, the half rate frame type, the quarter rate frame type, and critical eighth rate frame type. 6. The method of claim 3, the processing for transmission comprising formatting data to be transmitted using a physical layer frame format. 7. The method of claim 3, the determining whether the current frame is guaranteed for transmission comprising determining whether a quantity (FrameNumber+FrameOffset) mod N is equal to zero, wherein the FrameNumber is a sequence number for the current frame, the FrameOffset is an offset, and N is a non-blanking interval. 8. The method of claim 3, the processing the null rate for transmission comprising reducing a pilot signal transmission rate using a gated pilot pattern. 9. The method of claim 8, the current frame comprising a plurality of sub-segments, the gated pilot pattern providing for transmission in every other sub-segment of the frame. 10. The method of claim 9, the gated pilot pattern providing for no transmission during groups of two consecutive sub-segments. 11. The method of claim 8, further comprising: transmitting a power control indicator only in sub-segments designated for transmission according to the gated pilot pattern. 12. The method of claim 3, the null rate having a traffic bitrate of 0 bps. 13. The method of claim 3, the null rate containing data associated with the null rate, the data associated with the null rate having a traffic bitrate greater than 0 bps. 14. The method of claim 1, further comprising: if the current frame is determined to be guaranteed for transmission, processing a null-rate indicator for transmission, the null-rate indicator having non-zero information bitrate. 15. The method of claim 13, the data associated with the null rate comprising a previously transmitted frame having a bitrate of 1.8 kbps. 16. An apparatus for processing information according to a plurality of rates, the apparatus comprising: a systematic blanking module configured to: receive a current frame containing traffic information;determine whether the current frame is of a critical frame type;if the current frame is determined to be of a critical frame type, process the traffic information as a result for transmission;if the current frame is determined to be not of a critical frame type, determine whether the current frame is guaranteed for transmission based on at least one parameter of the current frame;if the current frame is determined to be not guaranteed for transmission, process a null rate frame as the result for transmission, the null rate frame having a reduced information bitrate compared to the traffic information; the apparatus further comprising:a transmitter configured to transmit the result of said processing for transmission. 17. The apparatus of claim 16, the apparatus comprising a modem, the modem configured to receive the current frame from a vocoder. 18. The apparatus of claim 16, the systematic blanking module further configured to: if the current frame is determined to be guaranteed for transmission, process the traffic information for transmission. 19. The apparatus of claim 18, the traffic information having a frame type selected from a group consisting of full rate frame type, half rate frame type, quarter rate frame type, and eighth rate frame type. 20. The apparatus of claim 19, the critical frame type comprising any frame type among the full rate frame type, the half rate frame type, the quarter rate frame type, and critical eighth rate frame type. 21. The apparatus of claim 19, the systematic blanking module configured to determine whether the current frame is guaranteed for transmission by determining whether a quantity (FrameNumber+FrameOffset) mod N is equal to zero, wherein the FrameNumber is a sequence number for the current frame, the FrameOffset is an offset, and N is a non-blanking interval. 22. The apparatus of claim 20, the apparatus configured to process the null rate for transmission by reducing a pilot signal transmission rate of the transmitter using a gated pilot pattern. 23. The apparatus of claim 22, the current frame comprising a plurality of sub-segments, the gated pilot pattern providing for transmission in every other sub-segment of the frame. 24. The apparatus of claim 23, the gated pilot pattern providing for no transmission during groups of two consecutive sub-segments. 25. The apparatus of claim 22, the transmitter further configured to transmit a power control indicator only in sub-segments designated for transmission according to the gated pilot pattern. 26. The apparatus of claim 17, the null rate having a traffic bitrate of 0 bps. 27. The apparatus of claim 17, the null rate containing data associated with the null rate, the data associated with the null rate having a traffic bitrate greater than 0 bps. 28. The apparatus of claim 16, the systematic blanking module further configured to: if the current frame is determined to be guaranteed for transmission, process a null-rate indicator for transmission, the null-rate indicator having non-zero information bitrate. 29. The apparatus of claim 27, the data associated with the null rate comprising a previously transmitted frame having a bitrate of 1.8 kbps. 30. An apparatus for processing information according to a plurality of rates, the apparatus comprising: systematic blanking means for: receiving a current frame containing traffic information;determining whether the current frame is of a critical frame type;if the current frame is determined to be of a critical frame type, processing the traffic information as a result for transmission;if the current frame is determined to be not of a critical frame type, determining whether the current frame is guaranteed for transmission based at least partially on at least one parameter of the current frame;if the current frame is determined to be not guaranteed for transmission, processing a null rate frame as the result for transmission, the null rate frame having a reduced information bitrate compared to the traffic information; anda transmitter configured to transmit the result of said processing for transmission. 31. The apparatus of claim 30, the apparatus comprising means for transmitting a pilot signal using a gated pilot pattern. 32. A non-transitory computer-readable storage medium storing instructions for causing a computer to process information according to a plurality of rates, the non-transitory computer-readable storage medium further storing instructions for causing the computer to: receive a current frame containing traffic information;determine whether the current frame is of a critical frame type;if the current frame is determined to be of a critical frame type, process the traffic information as a result for transmission;if the current frame is determined to be not of a critical frame type, determine whether the current frame is guaranteed for transmission based at least partially on at least one parameter of the current frame;if the current frame is determined to be not guaranteed for transmission, process a null rate frame as the result for transmission, the null rate frame having a reduced information bitrate compared to the traffic information; andtransmit the result of said processing for transmission. 33. The non-transitory computer-readable storage medium of claim 32, further storing instructions for causing the computer to: if the current frame is determined to be guaranteed for transmission, process the traffic information for transmission.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (106)
Yang, Hong-Kui; Wang, Shu; Anderson, Kraig Lamar; Gu, Jian; Miao, Tingting; Tian, Zhigang, Adaptive acknowledging and power control.
Mangiapane Rosario (Burlington MA) Ogar George W. (Wakefield MA) Long Albert H. (Framingham MA), All weather strike system (AWTSS) and method of operation.
Peregrim Theodore J. (Bedford MA) Mangiapane Rosario (Burlington MA) Ogar George W. (Wakefield MA), All weather tactical strike system (AWISS) and method of operation.
Young Benjamin L. (Westford MA) Mangiapane Rosario (Burlington MA) Pozgay Jerome H. (Needham MA), All weather tactical strike system (AWTSS) and method of operation.
Kim, Ki Jun; Yi, Byung Kwan; Kim, Sang Gook; Roh, Dong Wook, Apparatus and method of transmitting and receiving data in soft handoff of a wireless communication system.
Lespagnol Albert (33 ; rue de Landerval 22700 Perros-Guirec FRX) Quinquis Jean-Paul (Rue de Cornic 22700 Perros-Guirec FRX) Kerberenes Jacques (Kerlan ; Servel 22300 Lannion FRX), Apparatus for reconstructing and multiplexing frames of various origins made up of a variable number of packets of fixed.
Nakahara, Naruhito; Ishida, Yuuji; Tsubaki, Naoki; Saito, Joichi; Suzuki, Toshinori; Takeuchi, Yoshio; Niida, Sumaru, Base station apparatus, mobile communication system, and method of controlling transmission power.
Walton,Jay Rodney; Ketchum,John W.; Wallace,Mark S.; Howard,Steven J., Broadcast transmission with spatial spreading in a multi-antenna communication system.
Chen,Tao; Wei,Yongbin; Jain,Avinash; Tiedemann, Jr.,Edward G., Forward and reverse link power control of serving and non-serving base stations in a wireless communication system.
Frank, Colin D.; Visotsky, Eugene; Choudhary, Prashant; Ghosh, Amitava, Linear minimum mean square error equalization with interference cancellation for mobile communication forward links utilizing orthogonal codes covered by long pseudorandom spreading codes.
Chen, Tao; Wang, Jun; Tiedemann, Jr., Edward G., Method and apparatus for channel management for point-to-multipoint services in a communication system.
Lundby, Stein A.; Bao, Gang; Jain, Avinash, Method and apparatus for controlling reverse link data rate of a mobile station in a communication system with reverse link common rate control.
Pukkila,Markku; Mattellini,Gian Paolo; Ranta,Pekka A., Method and apparatus for determining components of a channel impulse response for use in a SAIC equalizer.
Butler Brian K. ; Padovani Roberto ; Zehavi Ephraim, Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver.
Wallace, Mark S.; Tiedemann, Jr., Edward G.; Wheatley, III, Charles E.; Walton, J. Rod; Howard, Steven J., Method and apparatus for providing wireless communication system synchronization.
Bahrenburg, Stefan; Euscher, Christoph; Weber, Tobias; Baier, Paul Walter; Mayer, J?rgen; Schlee, Johannes, Method and radio station for data transmission.
Saifuddin, Ahmed; Sarkar, Sandip; Tiedemann, Jr., Edward G., Method and system for controlling transmission energy in a variable rate gated communication system.
Varma,Gottimukkala Narendra; Devesh,Kunwar; Yoganandam,Yeleswarapu, Method and system for data-aided timing offset estimation for frequency selective fading channels.
Saito, Joichi; Nakahara, Naruhito; Ishida, Yuuji; Tsubaki, Naoki; Suzuki, Toshinori; Takeuchi, Yoshio; Niida, Sumaru, Mobile communications system and radio base station apparatus.
Kindred Daniel Ray ; Butler Brian K. ; Zehavi Ephraim ; Wolf Jack Keil, Multirate serial viterbi decoder for code division multiple access system applications.
Shiu,Da shan; Willenegger,Serge; Chi,Richard; Subrahmanya,Parvathanathan; Hsu,Chih Ping, Power control for a channel with multiple formats in a communication system.
Fargues Alain,FRX ; Kimiavi Mani,FRX, Process and device for detecting loss of carrier recovery and of determining the Eb/No ratio of a digital transmission link.
Jokinen, Sami, Receiver and receiving method simplifying the interference cancellation of multi-user detection in a direct sequence code division multiple access (DS-CDMA) telecommunication system.
Sikri, Divaydeep; Dede, Erdogan; Abrishamkar, Farrokh; Children, Philip J. C.; De Laurentiis, Nico, Semi-coherent timing propagation for GERAN multislot configurations.
Guo, Yuanbin; McCain, Dennis; Cavallaro, Joseph R., System, apparatus, and method for adaptive weighted interference cancellation using parallel residue compensation.
Malladi, Durga Prasad; Willenegger, Serge D.; Zhang, Xiaoxia, Systems and methods for multiplexing control data for multiple data channels onto a single control channel.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.