Communications system, apparatus and method

• US 9,065,567 B2
• Filed: 06/13/2012
• Issued: 06/23/2015
• Est. Priority Date: 06/17/2011
• Status: Active Grant

• Current Assignee: Airwave Solutions Ltd. (Motorola Solutions, Inc.)
• Original Assignee: Airwave Solutions Ltd. (Motorola Solutions, Inc.)
• Inventors: Davies, Euros
• Primary Examiner(s): Alam, Fayyaz
• Application Number:
  US13/517,514
• Publication Number:
  US 20120322365A1
• Time in Patent Office: 1,105 Days
• Field of Search: 455/7, 455/8, 455/11.1, 455/12.1, 455/13.1, 455/25, 455517-521
• US Class Current: 1/1
• CPC Class Codes: H04B 10/25753 Distribution optical network, e.g. between a base station and a plurality of remote units
• CPC Class Codes: H04B 7/12 Frequency diversity
• 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: H04L 5/08 each combination of signals in different channels being represented by a fixed frequency
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 84/08 Trunked mobile radio systems

Abstract

Communications apparatus is disclosed which is arranged to configure a signal for transmission on a first carrier frequency from a transmit station, configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal, and delay said signal for transmission on a first carrier frequency from a transmit station.

Claims

1. A communications apparatus, arranged to:

configure a signal for transmission via an antenna on a first carrier frequency;

configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal; and

delay said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for said signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said first remote repeater station to a transmit antenna thereof.

2. The communications apparatus according to claim 1 comprising a local repeater station operative to transmit on said second carrier frequency and wherein said communications apparatus is further arranged to couple said signal to said local repeater station for transmission on said second carrier frequency.

3. The communications apparatus according to claim 2, further arranged to couple said signal to said local repeater at said first carrier frequency.

4. The communications apparatus according to claim 2, wherein said local repeater station comprises two configuration paths, a first configuration path for said signal for transmission on said first carrier frequency and a second configuration path for configuring signal on to said second carrier frequency.

5. The communications apparatus according to claim 4, wherein said first configuration path is configurable to introduce said delay into said signal for transmission on said first carrier frequency.

6. The communications apparatus according to claim 2, comprising:

a first module arranged to configure said signal for transmission on a first carrier frequency; and

a second module comprising said local repeater station.

7. The communications apparatus according to claim 6, wherein said first module comprises a base transceiver station.

8. The communications apparatus according to claim 1, comprising a user interface for configuring said delay in said signal for transmission.

9. The communications apparatus according to claim 8, wherein said user interface is configured to provide remote access for configuring said delay.

10. A repeater station comprising a communications apparatus arranged to:

receive a signal on a first carrier frequency from said communications apparatus;

configure said signal for re-transmission on said first carrier frequency;

configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal;

delay said signal for re-transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for a signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said remote repeater station to a transmit antenna thereof.

11. The repeater station according to claim 10, comprising first and second configuration paths, said first configuration path for configuring said signal for transmission on said first carrier frequency and said second configuration path for configuring signals on to said second carrier frequency.

12. The repeater station according to claim 11, wherein said first configuration path is configurable to delay said signal for transmission on said first carrier frequency.

13. The repeater station according to claim 10, comprising a user interface operative to configure said repeater station to introduce said delay through said first configuration path.

14. The repeater station according to claim 13, wherein said user interface is configured to provide remote access to said repeater station for configuring said delay.

15. A repeater station operative as a remote repeater station, comprising:

a communications receiver configured to receive a signal transmitted on a second carrier frequency; and

a communications transmitter configured to transmit on a first carrier frequency said signal received by said communications receiver on said second carrier frequency to form a repeated signal;

said remote repeater station configurable to introduce a delay in said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for a signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said remote repeater station to said communications antenna thereof.

16. The remote repeater station according to claim 15, further comprising a user interface operative to configure said delay in said signal to be transmitted on said first or third carrier frequency.

17. The remote repeater station according to claim 16, wherein said user interface is configured to provide remote access to said remote repeater station for configuring said delay.

18. A communications system, comprising:

a communications apparatus arranged to;

configure a signal for transmission on a first carrier frequency;

configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal, and

delay said signal for transmission on a first carrier frequency;

a local repeater station configured to receive said signal on said first carrier frequency from said communications apparatus and retransmit said signal via an antenna on said second carrier frequency; and

a first remote repeater station for receiving said signal on said second carrier frequency and re-transmitting said signal on said first carrier frequency;

wherein said local repeater station is configured to invoke a synchronization delay in said signal for transmission on said first carrier frequency corresponding to the sum of the time taken for a signal on said second carrier frequency to reach said first remote repeater station and the time taken for said signal to transition said first remote repeater station to a transmit antenna thereof.

19. The communications system according to claim 18, further comprising a second remote repeater station, wherein said second remote repeater station is placed at a shorter distance from said local repeater station than said first remote repeater station, said second remote repeater station configured to invoke a synchronization delay in said signal for transmission on said first carrier frequency corresponding to the difference between the time taken for a signal on said second carrier frequency to reach said first remote repeater station from said local repeater station and the time taken for a signal on said second carrier frequency to reach said second remote repeater station from said local repeater station.

20. A communications method comprising:

configuring a signal for transmission via an antenna on a first carrier frequency;

configuring said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal; and

delaying said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for a signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said remote repeater station to a transmit antenna thereof.

21. The method according to claim 20 comprising transmitting on said second carrier frequency from a local repeater station and coupling said signal to said local repeater station for transmission on said second carrier frequency.

22. The method according to claim 21, further comprising coupling said signal to said local repeater at said first carrier frequency.

23. The method according to claim 21, further comprising providing two configuration paths, a first configuration path for said signal for transmission on said first carrier frequency and a second configuration path for configuring signal on to said second carrier frequency.

24. The method according to claim 23, further comprising introducing said delay into said signal for transmission on said first carrier frequency.

25. The method according to claim 20, further comprising providing a user interface for configuring said delay in said signal for transmission.

26. The method according to claim 25, further comprising configuring said user interface to provide remote access for configuring said delay.

27. A method of operating a repeater station as a local repeater station comprising:

receiving a signal on a first carrier frequency from a communications apparatus;

configuring said signal for re-transmission on said first carrier frequency;

configuring said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal;

delaying said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for said signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said remote repeater station to a transmit antenna thereof.

28. The method according to claim 27, further comprising configuring said signal for transmission on said first carrier frequency on a first configuration path and configuring signals on to said second carrier frequency on a second configuration path.

29. The method according to claim 28, wherein said first configuration path is configurable to delay said signal for transmission on said first carrier frequency.

30. The method according to claim 29, configuring a user interface for introducing said delay through said first configuration path.

31. The method according to claim 30, further comprising providing remote access to said repeater station for configuring said delay.

32. A method for operating a remote repeater station, comprising:

receiving a signal transmitted on a second carrier frequency; and

transmitting on a first carrier frequency said signal received by a communications receiver thereof on said second carrier frequency to form a repeated signal; and

introducing a delay in said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for a signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said remote repeater station to a transmit antenna thereof.

33. The method according to claim 32, further comprising configuring said delay in said signal to be transmitted on said first or third carrier frequency via a user interface.

34. The method according to claim 33, further comprising providing remote access to said remote repeater station for configuring said delay.

35. A non-transitory computer readable storage medium having executable computer program instructions embodied therein, said computer program comprising instructions that when executed cause a processor to:

receive a signal on a first carrier frequency from a communications apparatus;

configure said signal for re-transmission on said first carrier frequency;

configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal; and

delay said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for a signal on said second carrier frequency to reach said remote repeater station and the time taken for said signal to transition said remote repeater station to a transmit antenna thereof.

36. A non-transitory computer readable storage medium having executable computer program instructions embodied therein, said computer program comprising instructions that when executed cause a processor to:

receive a signal transmitted on a second carrier frequency; and

transmit on a first carrier frequency said signal received on said second carrier frequency to form a repeated signal; and

introduce a delay in said signal for transmission on said first carrier frequency, said delay corresponding to the sum of the time taken for a signal on said second carrier frequency to reach a remote repeater station comprising said processor and the time taken for said signal to transition said repeater station to a transmit antenna thereof.