Operation and maintenance link for antenna equipment

• US 6,151,482 A
• Filed: 09/30/1997
• Issued: 11/21/2000
• Est. Priority Date: 09/30/1997
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Eriksson, Hakan
• Primary Examiner(s): Vo, Nguyen
• Assistant Examiner(s): Mehrpour, Naghmeh
• Application Number:
  US08/940,337
• Time in Patent Office: 1,148 Days
• Field of Search: 455/423, 455/67.4, 455/254, 455/33.1, 455/67.1, 455/226.1, 370/321
• US Class Current: 455/67.11
• CPC Class Codes: H04B 17/19 Self-testing arrangements
• CPC Class Codes: H04B 17/29 Performance testing
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

An operation and maintenance communications link is established between an antenna near parts component and transmitter and receiver of a transceiver site assembly. The transmitter and receiver are connected to a remote antenna by means of a radio frequency feeder supporting a plurality of communications channels. A radio transceiver is connected to the antenna near parts component. A communications connection comprising the operation and maintenance communications link is established between the radio frequency transceiver and the transmitter and receiver over the radio frequency feeder connected to the antenna using a selected one of the supported communications channels. Another implementation further utilizes an air interface connection supporting the selected communications channel to provide the operation and maintenance communications link.

Claims

1. A system, comprising:

a first radio frequency transceiver;

an antenna remotely located from the first radio frequency transceiver supporting first radio frequency transceiver communication over an air interface;

a radio frequency feeder connecting the first radio frequency transceiver to the remotely located antenna;

antenna near parts mounted proximate to the remotely located antenna and operable to exchange antenna near parts related operation and maintenance information;

a second radio frequency transceiver connected to the antenna near parts; and

an operation and maintenance communications link connecting the antenna near parts for communication through the second radio frequency transceiver to the first radio frequency transceiver for the exchange of antenna near parts related operation and maintenance information communicated over the radio frequency feeder, the communications link comprising a communications channel supported by the radio frequency feeder.

2. The system as in claim 1 wherein the communications channel is further supported by the air interface and the remotely located antenna.

3. The system as in claim 1 wherein the communications channel comprises a traffic channel.

4. The system as in claim 1 wherein the communications channel comprises a control channel.

5. The system as in claim 1 wherein the communications channel comprises a basic physical channel supported by the air interface and radio frequency feeder.

6. The system as in claim 5 wherein the basic physical channel comprises a frequency channel.

7. The system as in claim 5 wherein the basic physical channel comprises a time slot channel within a frequency.

8. The system as in claim 5 wherein the basic physical channel comprises a code division multiple access (CDMA) channel.

9. The system as in claim 1 wherein the exchanged operation and maintenance information comprises information concerning supervision of the antenna near parts.

10. The system as in claim 9 wherein supervision is provided using the exchanged operation and maintenance information as to one of:

a transmit feeder portion of the radio frequency feeder;

a receive feeder portion of the radio frequency feeder;

an amplifier of the antenna near parts;

the remotely located antenna through a voltage standing wave ratio measurement;

a radio frequency loop within the antenna near parts; and

interference with respect to downlink communications.

22. The apparatus as in claim 1 wherein the antenna near parts device comprises a tower mounted amplifier for the antenna.

23. The apparatus as in claim 1 wherein the antenna near parts device comprises a power amplifier module for the antenna.

24. The apparatus as in claim 1 wherein the antenna near parts device comprises:

a plurality of sensors for sensing operational characteristics of the antenna near parts device; and

a switch for selectively choosing input from the sensors for output to the radio frequency transceiver and communication as the operation and maintenance information.

11. A cellular communications system, comprising:

a base station including a base station radio frequency transceiver capable of radio frequency communicating over a plurality of available channels;

an antenna connected to and remotely located from the base station;

a radio frequency feeder connecting the base station transceiver to the antenna;

antenna near parts mounted proximate to the remotely located antenna and operable to exchange antenna near parts related operation and maintenance information;

a mobile station transceiver connected to the antenna near parts and in communication with the base station radio frequency transceiver over a selected one of the available channels comprising an operation and maintenance communications link supporting the exchange of antenna near parts related operation and maintenance information between the antenna near parts and the base station radio frequency transceiver through the mobile station transceiver and over the radio frequency feeder.

12. The system as in claim 11 wherein the mobile station transceiver is in communication with the base station radio frequency transceiver over an air interface supporting the selected one of the available channels.

13. The system as in claim 11 wherein the selected one of the available channels comprises a traffic channel.

14. The system as in claim 11 wherein the selected one of the available channels comprises a control channel.

15. The system as in claim 11 wherein the selected one of the available channels comprises a basic physical channel supported by a radio frequency feeder connecting the base station to the antenna.

16. The system as in claim 15 wherein the basic physical channel is further supported by an air interface connection using the antenna.

17. The system as in claim 15 wherein the basic physical channel comprises a cellular system frequency channel.

18. The system as in claim 15 wherein the basic physical channel comprises a cellular system time slot channel within a frequency.

19. The system as in claim 15 wherein the basic physical channel comprises a code division multiple access (CDMA) channel.

20. The system as in claim 11 wherein the operation and maintenance information is exchanged using a cellular short message service (SMS) message communication over the selected one of the available channels.

21. The system as in claim 11 wherein the exchanged operation and maintenance information comprises information concerning supervision of the antenna near parts.

25. A method for establishing an operation and maintenance communications link between a cellular radio base station and a mobile station associated with and mounted proximately to antenna near parts for the cellular radio base station, comprising the steps of:

polling for the mobile station mounted proximately to the antenna near parts, wherein the antenna near parts are mounted proximate an antenna remotely located from the base station;

responding to a polling response received from the mobile station by selecting one of a plurality of available cellular communications channels for use as the operation and maintenance communications link;

communicating a channel assignment to the mobile station; and

responding to an access by the mobile station on the selected communications channel by connecting the radio base station with the mobile station for the exchange of antenna near parts related operation and maintenance information over that channel between the radio base station and the antenna near parts through the mobile station.

26. A method for establishing an operation and maintenance communications link between a cellular radio base station and a mobile station associated with and mounted proximate to antenna near parts for the cellular radio base station, comprising the steps of:

responding to a channel request from the mobile station mounted proximately to the antenna near parts by selecting one of a plurality of available cellular communications channels for use as the operation and maintenance communications link, wherein the antenna near parts are mounted proximate an antenna remotely located from the base station;

communicating a channel assignment to the mobile station; and

responding to an access by the mobile station on the selected communications channel by connecting the radio base station with the mobile station for the exchange of antenna near parts related operation and maintenance information over that channel between the radio base station and the antenna near parts through the mobile station.

27. A system, comprising:

a base station including a base station radio frequency transceiver;

an antenna remotely located from the base station and supporting base station radio frequency transceiver communication over an air interface supporting a plurality of radio frequency communications channels;

antenna near parts mounted proximate to the remotely located antenna and including a capability for detecting faults in the operation of the antenna near parts and generating signals indicative of such fault detection;

a radio frequency feeder connecting the base station radio frequency transceiver to the remotely located antenna through the proximately mounted antenna near parts using the plurality of radio frequency communications channels;

a remote radio frequency transceiver connected to the antenna near parts to receive the signals indicative of fault detection from the antenna near parts; and

an operation and maintenance communications link connecting the remote radio frequency transceiver at the antenna near parts to the base station radio frequency transceiver for the communication of the received antenna near parts related signals indicative of fault detection to the base station, wherein the operation and maintenance communications link comprises a certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder.

28. The system as in claim 27 wherein the operation and maintenance communications link comprises the certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder and additionally a certain one of the plurality of radio frequency communications channels supported by the air interface.

29. The system as in claim 27 wherein the certain one of radio frequency communications channels comprises one of a traffic channel or a control channel.

30. The system as in claim 27 wherein the certain one of the radio frequency communications channels comprises a basic physical channel supported by both the air interface and radio frequency feeder.

31. The system as in claim 30 wherein the basic physical channel comprises one of a frequency channel, a time slot channel within a frequency or a code division multiple access (CDMA) channel.

32. The system as in claim 27 wherein the antenna near parts device comprises one of a tower mounted amplifier for the antenna or a power amplifier module for the antenna.

33. The system as in claim 27 wherein the antenna near parts related signals indicative of fault detection are sent using a cellular short message service (SMS) message communication over the certain one of the radio frequency communications channels.

34. A system, comprising:

a base station including a base station radio frequency transceiver;

an antenna remotely located from the base station and supporting base station radio frequency transceiver communication over an air interface supporting a plurality of radio frequency communications channels;

antenna near parts mounted proximate to the remotely located antenna and controlled by software;

a radio frequency feeder connecting the base station radio frequency transceiver to the remotely located antenna through the proximately mounted antenna near parts using the plurality of radio frequency communications channels;

a remote radio frequency transceiver connected to the antenna near parts to download a received software upgrade to the antenna near parts; and

an operation and maintenance communications link connecting the base station radio frequency transceiver to the remote radio frequency transceiver at the antenna near parts for the communication of the software upgrade to the antenna near parts from the base station, wherein the operation and maintenance communications link comprises a certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder.

35. The system as in claim 34 wherein the operation and maintenance communications link comprises the certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder and additionally a certain one of the plurality of radio frequency communications channels supported by the air interface.

36. The system as in claim 34 wherein the certain one of radio frequency communications channels comprises one of a traffic channel or a control channel.

37. The system as in claim 34 wherein the certain one of the radio frequency communications channels comprises a basic physical channel supported by both the air interface and radio frequency feeder.

38. The system as in claim 37 wherein the basic physical channel comprises one of a frequency channel, a time slot channel within a frequency or a code division multiple access (CDMA) channel.

39. The system as in claim 34 wherein the antenna near parts device comprises one of a tower mounted amplifier for the antenna or a power amplifier module for the antenna.

40. The system as in claim 34 wherein the upgrade to the antenna near parts software is sent using a cellular short message service (SMS) message communication over the certain one of the radio frequency communications channels.

41. A system, comprising:

a base station including a base station radio frequency transceiver;

an antenna remotely located from the base station and supporting base station radio frequency transceiver communication over an air interface supporting a plurality of radio frequency communications channels;

antenna near parts mounted proximate to the remotely located antenna;

a radio frequency feeder connecting the base station radio frequency transceiver to the remotely located antenna through the proximately mounted antenna near parts using the plurality of radio frequency communications channels;

a sensor for measuring power on the radio frequency feeder at the location of the antenna near parts and generating signals indicative of such measured feeder power;

a remote radio frequency transceiver connected to receive the signals indicative of measured feeder power from the sensor; and

an operation and maintenance communications link connecting the remote radio frequency transceiver at the antenna near parts to the base station radio frequency transceiver for the communication of the measured feeder power related signals to the base station, wherein the operation and maintenance communications link comprises a certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder.

42. The system as in claim 41 wherein the operation and maintenance communications link comprises the certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder and additionally a certain one of the plurality of radio frequency communications channels supported by the air interface.

43. The system as in claim 41 wherein the certain one of radio frequency communications channels comprises one of a traffic channel or a control channel.

44. The system as in claim 41 wherein the certain one of the radio frequency communications channels comprises a basic physical channel supported by both the air interface and radio frequency feeder.

45. The system as in claim 44 wherein the basic physical channel comprises one of a frequency channel, a time slot channel within a frequency or a code division multiple access (CDMA) channel.

46. The system as in claim 41 wherein the antenna near parts device comprises one of a tower mounted amplifier for the antenna or a power amplifier module for the antenna.

47. The system as in claim 41 wherein the measured feeder power related signals are sent using a cellular short message service (SMS) message communication over the certain one of the radio frequency communications channels.

48. The system as in claim 41 wherein the remote radio frequency transceiver processes the signals indicative of measured feeder power to calculate a voltage standing wave ratio, and then communicates the calculated voltage standing wave ratio to the base station radio frequency transceiver over the operation and maintenance communications link.

49. The system as in claim 41 wherein the base station radio frequency transceiver receives the signals indicative of measured feeder power over the operation and maintenance communications link and processes those signals to calculate a voltage standing wave ratio.

50. A system, comprising:

a base station including a base station radio frequency transceiver;

an antenna remotely located from the base station and supporting base station radio frequency transceiver communication over an air interface supporting a plurality of radio frequency communications channels;

an amplifier mounted proximate to the remotely located antenna and having a configurable gain operation;

a radio frequency feeder connecting the base station radio frequency transceiver to the remotely located antenna through the proximately mounted amplifier using the plurality of radio frequency communications channels;

a remote radio frequency transceiver connected to the amplifier to forward a received a gain parameter to the amplifier to configure its gain operation; and

an operation and maintenance communications link connecting the base station radio frequency transceiver to the remote radio frequency transceiver at the antenna near parts for the communication of the gain parameter from the base station, wherein the operation and maintenance communications link comprises a certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder.

51. The system as in claim 50 wherein the operation and maintenance communications link comprises the certain one of the plurality of radio frequency communications channels supported by the radio frequency feeder and additionally a certain one of the plurality of radio frequency communications channels supported by the air interface.

52. The system as in claim 50 wherein the certain one of radio frequency communications channels comprises one of a traffic channel or a control channel.

53. The system as in claim 52 wherein the certain one of the radio frequency communications channels comprises a basic physical channel supported by both the air interface and radio frequency feeder.

54. The system as in claim 53 wherein the basic physical channel comprises one of a frequency channel, a time slot channel within a frequency or a code division multiple access (CDMA) channel.

55. The system as in claim 50 wherein the amplifier comprises one of a tower mounted amplifier or a power amplifier module for the antenna.

56. The system as in claim 50 wherein the gain parameter is sent using a cellular short message service (SMS) message communication over the certain one of the radio frequency communications channels.