Downlink transmission in a wireless data communication system having a base station with a smart antenna system

Patent 7062294 Issued on June 13, 2006. Estimated Expiration Date:

September 29, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3704465

3774209

3798645

3852749

Interferometric navigation and guidance system
Patent #: 3946385
Issued on: 03/23/1976
Inventor: Ewen

R.F. power distribution network for phased antenna array
Patent #: 4005379
Issued on: 01/25/1977
Inventor: Lerner

Concentric broadband power combiner or divider
Patent #: 4035746
Issued on: 07/12/1977
Inventor: Covington, Jr.

Spatial-multiplex, spatial-diversity optical communication scheme
Patent #: 4085319
Issued on: 04/18/1978
Inventor: Deitz, et al.

Antenna array for a cellular RF communications system
Patent #: 4128740
Issued on: 12/05/1978
Inventor: Graziano

Large scale low-loss combiner and divider
Patent #: 4263568
Issued on: 04/21/1981
Inventor: Nemit

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Inventors

Application

No. 09676887 filed on 09/29/2000

US Classes:

455/562.1, Having specific antenna arrangement455/561, Base station detail455/25, Directive antenna455/522, Transmission power control technique455/68, With control signal455/69, Transmitter controlled by signal feedback from receiver370/334, Using multiple antennas at a station370/329, Channel assignment370/330, Having both time and frequency assignment342/367, Including directive communication system342/372, Controlled342/373, With a matrix455/403, RADIOTELEPHONE SYSTEM455/67.14, Using a test signal375/220, Transmission interface between two stations or terminals370/328Having a plurality of contiguous regions served by respective fixed stations

Examiners

Primary: To, Doris H.
Assistant: Tran, Toan

Attorney, Agent or Firm

Blakely, Sokoloff, Taylor & Zafman LLP

Foreign Patent References

0 639 035 EP 02/01/1995
0 665 665 EP 08/01/1995
0 713 261 EP 05/01/1996
0 777 400 EP 06/01/1997
0786914 EP 07/01/1997
0 841 827 EP 05/01/1998
2 237 706 GB 05/01/1991
2 295 524 GB 05/01/1996
2 313 261 GB 11/01/1997
7-170548 JP 04/01/1995
2000031896 JP 01/01/2000
95/34103 WO 12/01/1995
WO 97/02262 WO 07/01/1996
WO 97/08849 WO 03/01/1997
98/01963 WO 01/01/1998
98/17037 WO 04/01/1998
98/17071 WO 04/01/1998
WO 98/28864 WO 07/01/1998
WO 98/33346 WO 07/01/1998

International Class

H04M 1/00

Abstract

A method, device, and machine readable medium to communicate from a base station having a smart antenna system to a user terminal. The method includes providing a downlink channel for transmitting downlink data from the base station to the user terminal, providing an associated channel for the base station to receive an uplink response signal from the user terminal in response to the downlink data. The associated channel is associated, and has a predefined relationship, with the downlink channel. The method further includes providing an uplink data channel, distinct from the associated uplink channel, for the base station to receive uplink data from the user terminal. The method also includes receiving the uplink response signal at the base station, determining a downlink smart antenna processing strategy using the received uplink response signal, sending downlink data from the base station to the user terminal using the determined downlink smart antenna processing strategy, and receiving uplink data from the user terminal on the uplink data channel.

Other References

Agee, “Blind Separation and Capture of Communication Signals Using A Multitarget Constant Modulus Beamformer”, Oct. 7, 1989 Proc. IEEE Military Communications Conference, vol. 2, pp. 1-12.
Aschied et al., “An All Digital Receiver Architecture for Bandwidth Efficient Transmission at High Data Rates”, 1989, IEEE Transactions on Communications, vol. 37, No. 8, pp. 804-813.
Franks, “Synchronization Subsystems: Analysis and Design”, 1981, Digital Communications Satellite/Earth Station Engineering, pp. 294-335.
Friedlander, “Direction Finding Using an Interpolated Array”, Apr. 3, 1990, International Conference on Acoustics, Speech, and Signal Processing, vol. 5, pp. 2951-2954.
Friedlander et al., “Direction Finding for Wideband Signals Using an Interpolated Array”, 1991, IEEE Publication, pp. 583-587.
Ganz et al., “A Data-Derived Reference Signal Technique for Adaptive Arrays”, IEEE Transactions on Communications, vol. 37, No. 9, Sep. 1989, pp. 975-983.
Iltis et al., “A Digital DS Spread-Spectrum Receiver With Joint Channel and Doppler Shift Esitmation”, IEEE Transactions on Communications, vol. 39, No. 8, Aug. 1991, pp. 1255-1267.
Lee et al., “Decision Directed Carrier Recovery—Chapter 16: Carrier Recovery”, 1994 Digital Communications, 2nd Edition, Kluwer Academic Pub., pp. 725-736.
Lee et al., “Decision Directed Carrier Recovery—Chapter 17: Timing Recovery”, 1994 Digital Communications, 2nd Edition, Kluwer Academic Pub., pp. 737-764.
Lundell et al., “Applications of the Constant Modulus Adaptive Beamformer to Constant and Non-Constant Modulus Signals”, Proceedings, 1998 Asilomar Conference on Signals, Systems, and Computers (ACSSC-1988), pp. 432-436.
Muhamed et al., “Direction of Arrival Estimation Using Antenna Arrays”, 1996, The Bradley Dept. of Electrical Enginerring, Mobile and Portable Radio Research Group, Section 3.8, pp. 64-71.
vander Veen et al., “A Constant Modulus Factorization Technique for Smart Antenna Applications in Mobile Communications”, SPIE 1994 “Advanced Signal Processing Algorithms, Architectures, and Implementations V”, vol. 2296, pp. 230-241.
Talwar et al., “Recursive Algorithms for Estimating Multiple Co-Channel Digital Signals Received at an Antenna Array”, Proc. Fifth Annual IEEE Dual Use Technologies and Applications Conference.
Papadias et al., “A Space-Time Constant Modulus Algorithm for SDMA Systems”, 1996, Proceedings, IEEE 46th Vehicular Technology Conference, pp. 86-90.
Talwar et al., “Blind Estimation of Multiple Co-Channel Digital Signals Arriving at an Antenna Array”, 1993, Proc. 27th Asilomar Conference on Signals, Systems, and Computers, vol. 1, pp. 349-342.
Rashid-Farrokhi et al., “Joint Power Control and Beamforming for Capacity Improvement in Wireless Networks With Antenna Array”, 1996 IEEE GLOBECOM 1996, vol. 1, pp. 555-559.
Rashid-Farrokhi et al., “Transmit Beamforming for Cellular Communication Systems”, Conference on Information Sciences and Systems, CISS-97; Mar. 1997, 4 pages.
Rashid-Farrokhi et al., “Downlink and Uplink Capacity Enhancement in Power Controlled Cellular Systems”, Proceedings, 1997 IEEE 47th Vehicular Technology Conference, vol. 2, May 1997, pp. 647-651.
Rashid-Farrokhi et al., “Downlink Power Control and Base Station Assignment”, IEEE Communications Letters, vol. 1, No. 4, Jul. 1997, pp. 102-104.
Rashid-Farrokhi et al., “Transmit Diversity and Equalization for Power Controlled Wireless Networks”, Conference Record 31st Asilomar Conference on Signals, Systems, and Computers, vol. 1, Nov. 1997, pp. 620-624.
Swidlehurst et al., “Analysis of a Decision Directed Beamformer”, IEEE Transactions on Signal Processing, vol. 43, No. 12, Dec. 1995, pp. 2920-2927.
US98/25364, PCT Search Report, May 11, 1999.
European Examination Report dated Oct. 18, 2002.
Farsakh et al., “A Real Time Downlink Channel Allocation Scheme for an SDMA Mobile Radio System,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, vol. 3, Oct. 18, 1996, pp. 1215-1220.
Farsakh et al., “Channel Allocation and Downlink Beamforming in an SDMA Mobile Radio System,” PIMRC '95, Wireless: Merging onto the Information Superhighway, 6th IEEE International Symposium on Toronto, Ont., Canada, Sep. 27-29, 1995, pp. 687-691.
Gerlach et al., “Base Station Transmitter Antenna Arrays with Mobile to Base Feedback,” IEEE Asilomar Conference on Signals, Systems & Computers, 1993, pp. 1432-1436.
Ottersten, B., “Array Processing for Wireless Communications,” Proc. 8th IEEE Signal Processing Workshop on Statistical Signal and Array Proc., Jun. 1996, pp. 466-473.
Zhang et al., “Performance of a Modified Polling Strategy for Broadband Wireless LANs in a Harsh Fading Environment,” GLOBECOM '91, Jan. 1991, pp. 1141-1146.
Acampora et al., “A New Adaptive MAC Layer Protocol for Wireless ATM Networks in Harsh Fading and Interference Environments,” 1997 IEEE, Aug. 1997, pp. 410-415.
Krishnamurthy et al., “Polling Based Media Access Protocols for Use With Smart Adaptive Array Antennas,” 1998 IEEE, Jan. 1998, pp. 337-344.
Xu et al., “Throughput Multiplication of Wireless LANs for Multimedia Services: SDMA Protocol Design,” 1994 IEEE, 1994, pp. 1326-1332.