Translation unit for wireless communications system

• US 7,133,697 B2
• Filed: 05/14/2002
• Issued: 11/07/2006
• Est. Priority Date: 05/14/2001
• Status: Expired due to Term

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: Andrew Corporation (CommScope Holding Company, Inc.)
• Inventors: Ommodt, Kevin W., Judd, Mano D., Varghese, Johnsy C.
• Primary Examiner(s): Maung, Nay
• Assistant Examiner(s): PEREZ, ANGELICA
• Application Number:
  US10/145,298
• Publication Number:
  US 20030036410A1
• Time in Patent Office: 1,638 Days
• Field of Search: 455/11.1, 455/561, 455/560, 455/7
• US Class Current: 455/561
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H04B 7/15542 Selecting at relay station its transmit and receive resources selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003
• CPC Class Codes: H04W 88/085 Access point devices with remote components
• CPC Class Codes: H04W 88/181 Transcoding devices; Rate adaptation devices
• CPC Class Codes: H04W 92/045 between access point and backbone network device

Abstract

A translation unit for use in a wireless communications system comprises translation circuitry configured to be interfaced between an RF antenna network and a backhaul network. The translation circuitry is operable for translating the frequency of signals directly between an RF network and a backhaul network without conversion to audio in order to provide direct communications between a base station and a backhaul destination.

Claims

1. A base station for a wireless communications system comprising:

at least one RF antenna for transceiving RF signals with a plurality of devices in an RF communication frequency band;

a backhaul system for transceiving signals with a backhaul destination in a backhaul band different from and outside of the RF communication frequency band, the backhaul band including one of a microwave band and an IF band;

translation circuitry configured to be interfaced between the RF antenna and the backhaul system;

the translation circuitry operable for translating the frequency of signals directly between the RF band for the RF antenna and the backhaul band for the backhaul antenna without conversion to audio to provide direct communications between a base station and a backhaul destination, wherein the conversion to and from audio is handled at a backhaul destination remote from the base station.

2. The base station of claim 1 wherein the translation circuitry is operable for translating the frequency of the signals between the different bands without modulation, and wherein modulation is handled at the backhaul destination.

3. The base station of claim 1 wherein the translation circuitry is operable for translating RF signals, in a plurality of channels spread over an RF frequency band, into the backhaul band.

4. The base station of claim 1 wherein the backhaul band includes at least a band from the group of:

LMDS, MMDS 2500, MMDS 2100, PCS 1900, WCS 2300, 2400 UNLICENSED, 5.1 GHz UNII, 5.8 GHz UNII, 900 UNLICENSED, CELL 800, 3.5 GHZ.

5. The base station of claim 1 wherein the RF band includes at least a band from the group of:

PCS 1900, 3G 1900, CELLULAR 800, 4G, WCS 2300, 2400 UNLICENSED, 5.1 GHz UNII, 5.8 GHz UNII, UMTS 1900/2100, DCS-1800, DCS 900.

6. The base station of claim 1 wherein said translation circuitry is operable for translating signals to an intermediate IF band when translating between the RF band and the microwave backhaul band.

7. The base station of claim 1 further comprising a power amplifier coupled to the translation circuitry for amplifying the translated signals.

8. The base station of claim 7 wherein the power amplifier is a part of the RF antenna.

9. The base station of claim 1 further comprising a low noise amplifier coupled to the translation circuitry for amplifying the signals prior to translation.

10. The base station of claim 9 wherein the low noise amplifier is a part of the RF antenna.

11. The base station of claim 1 wherein the translation circuitry is configured for mounting on a tower structure associated with the base station.

12. A base station for a wireless communications system comprising:

at least one RF antenna for transceiving RF signals with a plurality of devices in an RF communication frequency band;

a backhaul interface for interfacing with a backhaul destination in an IF backhaul band different from and outside the RF band;

translation circuitry configured to be interfaced between the RF antenna and the backhaul interface;

the translation circuitry operable for translating the frequency of signals directly between the RF band for the RF antenna and the IF backhaul band for the backhaul interface without conversion to audio to provide direct communications between a base station and a backhaul destination wherein the conversion to and from audio is handled at the backhaul destination remote from the base station.

13. The base station of claim 12 wherein the translation circuitry is operable for translating the frequency of the signals between the different bands without modulation.

14. The base station of claim 12 wherein the translation circuitry is configured for mounting on a tower structure associated with the base station.

15. The base station of claim 12 wherein the backhaul interface includes a cable interface.

16. The base station of claim 12 further comprising D/A circuitry operable for converting signals between analog and digital formats between the RF antenna and the backhaul interface.

17. The base station of claim 12 further comprising D/A circuitry operable for converting between digital and analog IF signals to provide digital IF backhaul.

18. The base station of claim 15 wherein the cable interface further comprises fiber transceiver circuitry coupled to the translation circuitry for providing communications over fiber between the base station and a backhaul destination.

19. A method for backhauling signals in a wireless communications system comprising:

transceiving RF signals with a plurality of devices using an RF antenna network including an RF antenna operating in an RF communication frequency band;

communicating with a backhaul destination through a backhaul network antenna operating in a backhaul band different from and outside of the RF band, the backhaul band including one of a microwave band and an IF band;

translating the frequency of signals directly between the RF band of the RF network and the backhaul band of the backhaul network without conversion to audio to provide direct communications between the RF antenna network and a backhaul destination;

converting the backhauled signals to and from audio at a backhaul destination remote from the base station.

20. The method of claim 19 further comprising translating the frequency of the signals between the different bands without modulation.

21. The method of claim 20 further comprising translating RF signals, in a plurality of channels spread over an RF frequency band, into the backhaul band.

22. The method of claim 19 wherein the RF channels have a total bandwidth comprising a first bandwidth, and further comprising translating the RF signals into a backhaul band having a second bandwidth at least as great as said first bandwidth.

23. The method of claim 19 wherein the backhaul network is a wireless microwave network, and further comprising translating the signals between an RF band and a microwave backhaul band.

24. The method of claim 19 wherein the backhaul network is a wireless network operating in a backhaul band including at least a band from the group of:

LMDS, MMDS 2500, MMDS 2100, PCS 1900, WCS 2300, 2400 UNLICENSED, 5.1 GHz UNII, 5.8 GHz UNII, 900 UNLICENSED, CELL 800, 3.5 GHZ.

25. The method of claim 19 further comprising transceiving RF signals over an RF frequency band which includes at least a band from the group of:

PCS 1900, 3G 1900, CELLULAR 800, 4G, WCS 2300, 2400 UNLICENSED, 5.1 GHz UNII, 5.8 GHz UNII, UMTS 1900/2100, DCS-1800, DCS 900.

26. The method of claim 23 further comprising translating signals to an intermediate IF band when translating between the RF band and the microwave backhaul band.

27. The method of claim 19 further comprising translating the signals on a tower structure proximate the RF antenna network.

28. A method for backhauling in a wireless communication system comprising:

transceiving RF signals with a plurality of devices using an RF network including an RF antenna operating in an RF communication frequency band;

communicating with a backhaul destination through a backhaul network operating in a backhaul band different from and outside of the RF band, the backhaul band including one of a microwave band and an IF band;

translating the frequency of signals directly between the RF band of the RF network and the backhaul band of the backhaul network without modulation to provide direct communications between the RF network and a backhaul destination;

performing modulation and demodulation of the backhaul signals at a backhaul destination remote from the base station.

29. The method of claim 28 wherein the RF signals include channels having a total bandwidth comprising a first bandwidth, the method further comprising translating the signals into a backhaul band having a second bandwidth at least as great as said first bandwidth.

30. The method of claim 28 wherein the backhaul band includes at least a band from the group of:

LMDS, MMDS 2500, MMDS 2100, PCS 1900, WCS 2300, 2400 UNLICENSED, 5.1 GHz UNII, 5.8 GHz UNII, 900 UNLICENSED, CELL 800, 3.5 GHZ.

31. The method of claim 28 further comprising converting the signals in an IF backhaul band to a fiber format for providing communications over fiber with the backhaul destination.

32. The method of claim 28 further comprising translating signals to an intermediate IF band when translating between the RF band and the backhaul band.

33. The method of claim 28 further comprising translating the signals on a tower structure proximate the RF antenna.

34. The method of claim 28 further comprising converting signals between analog and digital formats between the RF band and an IF backhaul band.