Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1992-09-25
1999-11-09
Urban, Edward F.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
455101, 455 59, 375299, H04B 700
Patent
active
059831120
ABSTRACT:
Multiple diversity used in a fading or shadowed error prone, framed, random access channel enhances the probability of successful transmission and reduces delays. This is important, for example, in mobile telephone service, in which traffic channels are only assigned on a speech spurt basis. Selected control messages (such as reverse allocation requests and deallocation requests) are transmitted with multiple diversity. More particularly, an identical control message is transmitted at multiple instants in time (such as three), each transmission occurring on a different carrier frequency, and each transmission occurring at a randomly selected power level.
REFERENCES:
patent: 3125724 (1964-03-01), Foulkes et al.
patent: 3523250 (1970-08-01), Branham
patent: 3953798 (1976-04-01), Sjostrand et al.
patent: 4128809 (1978-12-01), Kage
patent: 4232392 (1980-11-01), French
patent: 4253193 (1981-02-01), Kennard
patent: 4419758 (1983-12-01), Dorey
patent: 4583231 (1986-04-01), Puckette
patent: 4596024 (1986-06-01), Thomson
patent: 4616364 (1986-10-01), Lee
patent: 4621368 (1986-11-01), Onoe
patent: 4637937 (1987-01-01), McRae et al.
patent: 4809296 (1989-02-01), Braun
patent: 4825193 (1989-04-01), Siwiak et al.
patent: 4835731 (1989-05-01), Nazarenko et al.
patent: 4868811 (1989-09-01), Suzuki
patent: 4914649 (1990-04-01), Schwendeman et al.
Fluhr et al., "Advanced Mobile Phone Service: Control Architecture", Bell System Tech. Journal vol. 58, No. 1, Jan. 1979, pp. 43-68.
Fluhr et al, "Control Architecture", Bell System Technical Journal, vol. 58, No. 1, Jan. 1979, pp. 43-69.
Al-Salihi et al, "The Application of Time Assignment Speech Interpolation (TASI) to the Radiophone Service", Colloquium on Radio System Organisation & Control, 1980, pp. 5/1-5/5.
Campanella, "Digital Speech Interpolation", COMSAT Technical Review, vol. 6, No. 1, Spring 1976, pp. 127-158.
Chien et al, "Cellular Access Network (CADN): Wireless Access to Networks of the Future", IEEE Communications Magazine, Jun. 1987, vol. 25, No. 6, pp. 22-31.
Choudhury et al, "Diversity ALOHA--A Random Access Scheme for Satellite Communications", IEEE Transactions on Communications, vol. COM-31, No. 3, Mar. 1983, pp. 450-457, Comments: Su et al, vol. COM-32, No. 10, Oct. 1984, pp. 1143-1145.
Cooper et al, "Cellular Mobile Technology: The Great Multiplier", IEEE Spectrum, Jun. 1983, pp. 30-37.
D'Avella et al, "An Adaptive MLSE Receiver for TDMA Digital Mobile Radio", IEEE Journal on Selected Areas in Communications, vol. 7, No. 1, Jan. 1989, pp. 122-129.
Everitt et al, "Performance Analysis of Cellular Mobile Communication Systems with Dynamic Channel Assignment", IEEE Journal on Selected Areas in Communications, vol. 7, No. 8, Oct. 1989, pp. 1172-1180.
Fisher, "Dual Mode Mobile Unit for Next Generation Digital Narrow Channel Cellular Telephone System", 38th IEEE Vehicular Technology Conference, 1988, pp. 543-547.
Goodman et al, "Packet Reservation Multiple Access for Local Wireless Communications", IEEE Transactions on Communications, vol. 37, No. 8, Aug. 1989, pp. 885-889.
Gupta et al, "Land Mobile Radio Systems--A Tutorial Exposition", IEEE Communications Magazine, Jun. 1985, vol. 23, No. 6, pp. 34-45.
Lee, "Cellular Operators Feel the Squeeze", Telephony, May 30, 1988, pp. 22-23.
Li, "Multiple Access Communications Networks", IEEE Communications Magazine, Jun. 1987, vol. 25, No. 6, pp. 41-48.
Mahmoud et al, "An Integrated Voice/Data System for VHF/UHF Mobile Radio", IEEE Journal of Selected Areas in Communications, vol. SAC-1, No. 6, Dec. 1983, pp. 1098-1111.
Nguyen et al, "Access Strategies for D-TASI Over Mobile Radio Channels", IEEE Vehicular Technology Conference, 1986, pp. 311-318.
Riordon et al, "Demand Time-Assigned Speech Interpolation for Land Mobile Systems", International Conference on Mobile Radio Systems and Techniques,1984, pp. 150-154.
Schoute, "Dynamic Frame Length ALOHA", IEEE Transactions on Communications, vol. COM-31, No. 4, Apr. 1983, pp. 565-568.
Sheikh et al, "Performance of Access Strategies for D-TASI Over Mobile Radio Fading Channels", Journal of the Institution of Electronic and Radio Engineers, vol. 57, No. 6 (Supplement), Nov./Dec. 1987, pp. S304-S310.
Uddenfeldt et al, "Digital Technologies in Cellular Radio", 38th IEEE Vehicular Technology Conference, 1988, pp. 516-519.
Yan, "Performance Analysis of Replication ALOHA for Fading Mobile Communications Channels", IEEE Transactions on Communications, vol. COM-34, No. 12, Dec. 1986, pp. 1256-1259.
Hughes Electronics Corporation
Sales Michael W.
Urban Edward F.
Whelan John T.
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