Telecommunications – Transmitter and receiver at separate stations
Patent
1991-11-08
1993-09-21
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
455 381, 455 542, 379 63, H04B 726
Patent
active
052477029
ABSTRACT:
A method of establishing a wireless communication link between a base unit and a remote unit is disclosed. The base unit transmits periodically a sync signal in a first selected time period in a selected frequency channel. The remote unit scans for the clock signal. The remote unit transmits a first response signal encoded by a first code in the selected frequency channel in response to the detection of the clock signal. The first response signal is transmitted in a second selected time period, different from the first selected time period. The base unit transmits a first control signal which is encoded by said first code, in the selected frequency channel, in a third selected time period, which is different from the first and second selected time periods. The first control signal contains a second code to be used in the communication session between the base unit and the remote unit. The remote unit receives the first control signal in the third time period. The remote unit decodes the first control signal. Thereafter, communication in the selected frequency channel is accomplished between the base unit and the remote unit by the base unit transmitting an encoded data signal, encoded by the second code, in a fourth selected time period different from the first, second and third selected time periods, and by the remote unit transmitting an encoded data signal, encoded by the second code, in a fifth selected time period, which is different from the first, second, third and fourth time periods.
REFERENCES:
patent: 4688210 (1987-08-01), Eizenhofer et al.
patent: 4799252 (1989-01-01), Eizenhofer et al.
patent: 5020094 (1991-05-01), Rash et al.
patent: 5031207 (1991-07-01), Hesdahl et al.
patent: 5060266 (1991-10-01), Dent
patent: 5103459 (1992-04-01), Gilhousen et al.
38th IEEE Vehicular Technology Conference, Jun. 1988, "Variable-Rate Sub-Band Speech Coding and Matched Channel Coding for Mobile Radio Channels", by J. Hagenauer, N. Seshadri, C-E. W. Sundberg, pp. 139-146.
IEEE Transactions on Communications, vol. 38, No. 7, Jul. 1990, "The Performance of Rate-Compatible Punctured Convolutional Codes for Digital Mobile Radio", C-E. W. Sundberg, J. Hagenauer, N. Seshadri, pp. 966-980.
IEEE Transactions on Communications, vol. COM-32, No. 3, Mar. 1984, "High-Rate Punctured Convolutional Codes for Soft Decision Viterbi Decoding", Y. Yasuda, K. Kashiki, Y. Hirata, pp. 315-319.
IEEE Transactions on Communications, vol. 36, No. 4, Apr. 1988, "Rate-Compatible Punctured Convolutional Codes (RCPC Codes) and their Applications", J. Hagenauer, pp. 389-400.
Behtash Saman
Jarett Keith
Su Chun-Meng
Eisenzopf Reinhard J.
Pham Chi H.
Teknekron Communications Systems, Inc.
LandOfFree
Method and an apparatus for establishing a wireless communicatio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and an apparatus for establishing a wireless communicatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an apparatus for establishing a wireless communicatio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1057863