Store and forward repeater

• US 5,633,876 A
• Filed: 02/03/1995
• Issued: 05/27/1997
• Est. Priority Date: 10/26/1992
• Status: Expired due to Fees

• Current Assignee: EON Corporation
• Original Assignee: EON Corporation
• Inventors: Dinkins, Gilbert M.
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): Carman, Melissa Kay
• Application Number:
  US08/383,806
• Time in Patent Office: 844 Days
• Field of Search: 370/95.1, 370/953, 370/69.1, 370/71, 370/73, 370/75, 370/76, 370/124, 370/85, 370/1, 370/97, 370/104.1, 370/61, 348/6, 348/7, 348/12, 348/13, 455/3.1, 455/3.2, 455/4.1, 455/5.1, 455/6.1
• US Class Current: 370/315
• CPC Class Codes: H04B 7/15514 for shadowing compensation for satellite mobile telephony service systems H04B7/18536
• CPC Class Codes: H04H 20/02 Arrangements for relaying broadcast information
• CPC Class Codes: H04H 20/38 Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast
• CPC Class Codes: H04H 20/67 Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications
• CPC Class Codes: H04W 84/025 with acknowledge back capability
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and method for communicating between local subscriber units and a local base station repeater cell in a two-way communication interactive data broadcast network. In one embodiment, a store and forward repeater receives data signals transmitted by a local base station repeater cell and forwards the signals to local subscriber units. Responses from the local subscriber units are then transmitted from the local subscriber units back to the local base station repeater cell means via a local remote receiver. In so doing, two-way communication is achieved between a local base station repeater cell and local subscriber units.

Claims

1. An interactive data broadcast network configuration having a network hub switching center for routing communications to and from a plurality of subscriber units comprising:

subscriber units dispersed at various locations within a base station geographic area,

local base station repeater cell means for communicating with subscriber units within a local base station geographic area associated with said local base station repeater cell means by way of first data signals of variable lengths synchronously related to a base station broadcast signal and timed for multiplexed message transmission, said first data signals broadcast on a first carrier frequency, said local base station repeater cell means further comprising,

base station data processing and transmission means for transmitting to a set of said subscriber units contained within said local base station geographic area associated with said local base station repeater cell means, and

a receiver for receiving from a subset of said set of subscriber units second data messages of variable lengths broadcast on a second carrier frequency, said second data messages multiplexed and synchronously related to said first data signals of variable lengths to provide point-to-point communication between said local base station repeater cell means and said subset of said subscriber units,

store and forward repeater means for receiving said first data signals of variable lengths transmitted by said local base station repeater cell on said first carrier frequency and forwarding said first data signals of variable lengths to said subscriber units on a third carrier frequency, and

reception means for receiving and processing said second data signals broadcast at a low power on said second carrier frequency from said subscriber units, said reception means further comprising a local remote receiver disposed within one of a plurality of cell subdivision sites partitioned from said local base station geographic area associated with said local base station repeater cell means, said plurality of cell subdivision sites dispersed over said local base station geographic area, each of said local remote receivers adapted for receiving said low power second data signals from said subscriber units within range of said local remote receiver and forwarding said second data signals to said local base station repeater cell means.

2. The interactive data broadcast network configuration of claim 1 wherein said store and forward repeater means further includes:

receiver means for receiving said first data signals transmitted by said local base station repeater cell means on said first carrier frequency,

memory means coupled to said receiver means for storing said first data signals received by said receiver means,

transmitter means coupled to said memory means for transmitting said first data signals stored in said memory means to said subscriber units on said third carrier frequency,

controller means coupled to said memory means for controlling the transfer of said first data signals from said memory means to said transmitter means, and

power supply means for providing power to said store and forward repeater means.

3. The interactive data broadcast network configuration of claim 1 wherein said first carrier frequency is approximately 218-219 MHz.

4. The interactive data broadcast network configuration of claim 1 wherein said second carrier frequency is approximately 218-219 MHz.

5. The interactive data broadcast network configuration of claim 1 wherein said first carrier frequency is the same as said third carrier frequency.

6. The interactive data broadcast network configuration of claim 5 wherein the intensity of said first data signals transmitted by said store and forward repeater on said third carrier frequency is greater than the intensity of said first data signals when said first data signals are received by said store and forward repeater on said first carrier frequency.

7. The interactive data broadcast network configuration of claim 6 wherein said first and third carrier frequencies are approximately 218-219 MHz.

8. The interactive data broadcast network configuration of claim 1 wherein said memory means is further comprised of a shift register.

9. The interactive data broadcast network configuration of claim 1 wherein said base station repeater cell means transmits said first data signals in packets.

10. The interactive data broadcast network configuration of claim 9 wherein said store and forward repeater stores at least one of said packets of data and retransmits said at least one of said packets of data on said third carrier frequency to said subscriber units.

11. The interactive data broadcast network configuration of claim 10 wherein said retransmission of said at least one of said packets of data by said store and forward repeater is synchronized with the transmission of packets of data by said local base station repeater cell and with said base station broadcast signal.

12. An interactive data broadcast network system having a network hub switching center, said interactive data broadcast network system further comprising:

at least one subscriber unit receiving and transmitting data during operation of said interactive data broadcast network system,

a local base station repeater cell including a transmitter and a receiver for communicating with said at least one subscriber unit during operation of said interactive data broadcast network system,

a store and forward repeater communicatively coupled to said local base station repeater cell so as to receive data from said local base station and forward said data to said at least one subscriber unit, said store and forward repeater further comprising;

a receiver receiving data from said local base station,

a memory coupled to said receiver to store said data received from said base station by said receiver,

a transmitter coupled to said memory to transmit said data stored in said memory,

a controller coupled to said memory to control a transfer of data from said memory to said transmitter, and

a power supply that provides power to components of said store and forward repeater, and

a local remote receiver communicatively coupled to said at least one subscriber unit and said local base station repeater cell to receive data transmitted by said at least one subscriber unit and to forward said data transmitted by said at least one subscriber unit to said local base station.

13. The interactive data broadcast network system of claim 12 wherein said local base station repeater cell and said store and forward repeater are communicatively coupled via an rf link.

14. The interactive data broadcast network system of claim 13 wherein said rf link is at approximately 218-219 MHz.

15. The interactive data broadcast network system of claim 12 wherein said store and forward repeater and said subscriber unit are communicatively coupled via an rf link.

16. The interactive data broadcast network system of claim 15 wherein said rf link is at approximately 218-219 MHz.

17. The interactive data broadcast network system of claim 12 wherein said subscriber unit and said local remote receiver are communicatively coupled via an rf link.

18. The interactive data broadcast network system of claim 17 wherein said rf link is at approximately 218-219 MHz.

19. The interactive data broadcast network system of claim 12 wherein said memory of said store and forward repeater is a shift register.

20. A method for communicating in a two-way interactive data broadcast network having a network hub switching center comprising the steps of:

transmitting first data signals of variable lengths synchronously related to a base station broadcast signal and timed for multiplexed message transmission from local base station repeater cell means on a first carrier frequency,

receiving at a receiver of a store and forward repeater said first data signals of variable lengths transmitted by said local base station repeater cell on said first carrier frequency,

transmitting said first data signals of variable lengths from a transmitter of said store and forward repeater to local subscriber units on a second carrier frequency,

receiving at a respective receiver of said local subscriber units said first data signals of variable lengths transmitted by said store and forward repeater on said second carrier frequency,

transmitting second data messages of variable lengths synchronously related to said base station broadcast signal and timed for multiplexed message transmission from a transmitter of at least one of said local subscriber units to a local remote receiver on a third carrier frequency,

transmitting said second data messages of variable lengths from said local remote receiver to said local base station repeater cell means such that point-to-point communication between said local base station repeater cell means and said local subscriber units is achieved.

21. The two-way interactive data broadcast network communication method of claim 20 wherein the step of transmitting first data signals from local base station repeater cell means on a first carrier frequency further includes transmitting said first data signals on a first carrier frequency of approximately 218-219 MHz.

22. The two-way interactive data broadcast network communication method of claim 20 wherein the step of transmitting first data signals from a store and forward repeater on a second carrier frequency further includes transmitting said first data signals on a second carrier frequency of approximately 218-219 MHz.

23. The two-way interactive data broadcast network communication method of claim 20 wherein the step of transmitting second data signals from at least one of said local subscriber units to a local remote receiver on a third carrier frequency further includes transmitting said second data signals on a third carrier frequency of approximately 218-219 MHz.

24. The two-way interactive data broadcast network communication method of claim 20 wherein the step of transmitting first data signals from a store and forward repeater to local subscriber units on a second carrier frequency further includes transmitting said first data signals on a second carrier frequency which is the same as said first carrier frequency.

25. The two-way interactive data broadcast network communication method of claim 24 wherein the step of transmitting said first data signals on a second carrier frequency which is the same as said first carrier frequency further includes transmitting said first data signals from said store and forward repeater at an intensity which is greater than the intensity of said first data signals when said first data signals are received at said store and forward repeater.

26. The two-way interactive data broadcast network communication method of claim 24 wherein the step of transmitting said first data signals on a second carrier frequency which is the same as said first carrier frequency further includes transmitting said first data signals on a carrier frequency of approximately 218-219 MHz.

27. The two-way interactive data broadcast network communication method of claim 24 wherein the step of receiving at a receiver of a store and forward repeater said first data signals further includes the steps of:

storing said first data signals received by said receiver in memory means of said store and forward repeater, and

transferring said first data signals from said memory means to a transmitter of said store and forward repeater.

28. The two-way interactive data broadcast network communication method of claim 27 wherein the step of storing said first data signals in memory means of said store and forward repeater further includes storing said first data signals in a shift register.

29. The two-way interactive data broadcast network communication method of claim 20 wherein the step of transmitting first data signals from local base station repeater cell means on a first carrier frequency further includes transmitting said first data signals in packets.

30. The two-way interactive data broadcast network communication method of claim 20 wherein the step of transmitting first data signals from a store and forward repeater to local subscriber units on a second carrier frequency further includes transmitting said first data signals in packets.

31. The two-way interactive data broadcast network communication method of claim 30 wherein the step of transmitting first data signals in packets from a store and forward repeater to local subscriber units on a second carrier frequency further includes synchronizing the transmission of said packets with said local base station repeater cell means and said base station broadcast signal.