Sectorization in distributed antenna systems, and related components and methods

• US 8,548,330 B2
• Filed: 10/28/2010
• Issued: 10/01/2013
• Est. Priority Date: 07/31/2009
• Status: Active Grant

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Corning Cable Systems LLC (Corning Incorporated)
• Inventors: Berlin, Igor, Cune, William P., Greene, Jason E., Sauer, Michael, Schmidt, Gerald B.
• Primary Examiner(s): Liu, Li
• Application Number:
  US12/914,585
• Publication Number:
  US 20110268449A1
• Time in Patent Office: 1,069 Days
• Field of Search: 398/79, 398115-117, 4554221-5621, 340/2.22, 370280-338, 379/56.2
• US Class Current: 398/115
• CPC Class Codes: H04B 10/25752 Optical arrangements for wireless networks
• CPC Class Codes: H04B 10/25753 Distribution optical network, e.g. between a base station and a plurality of remote units
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

Embodiments disclosed provide sectorization in distributed antenna systems, and related components and methods. The antenna units in the distributed antenna systems can be sectorized. In this regard, one or more radio bands distributed by the distributed antenna systems can be allocated to one or more sectors. The antenna units in the distributed antenna systems are also allocated to one or more sectors. In this manner, only radio frequency (RF) communications signals in the radio band(s) allocated to given sector(s) are distributed the antenna unit allocated to the same sector(s). The bandwidth capacity of the antenna unit is split among the radio band(s) allocated to sector(s) allocated to the antenna unit. The sectorization of the radio band(s) and the antenna units can be configured and/or altered based on capacity needs for given radio bands in antenna coverage areas provide by the antenna units.

Claims

1. An apparatus configured to distribute radio bands in one or more sectors among a plurality of sectors in a distributed antenna system, comprising:

a plurality of radio interfaces each configured to;

split a received downlink electrical radio frequency (RF) communications signal into a plurality of downlink electrical RF communications signals; and

control providing each of the split plurality of downlink electrical RF communications signals to one or more sectors among a plurality of sectors in a distributed antenna system configured for the radio interface; and

a plurality of optical interfaces each configured to;

receive the split plurality of downlink electrical RF communications signals from the plurality of radio interfaces;

control for which sectors among the plurality of sectors configured for the optical interface, the received split plurality of downlink electrical RF communications signals are provided to one or more remote antenna units (RAUs) communicatively coupled to the optical interface; and

convert the received split plurality of downlink electrical RF communications signals into a plurality of downlink optical RF communications signals, wherein

the plurality of optical interfaces are each further configured to;

split a received uplink optical RF communications signal into a plurality of uplink optical RF communications signals;

control providing each of the split plurality of uplink optical RF communications signals to the one or more sectors among a plurality of sectors configured for the optical interface; and

convert the received split plurality of uplink optical RF communications signals into a plurality of uplink electrical RF communications signals; and

the plurality of radio interfaces are each further configured to;

receive the plurality of uplink electrical RF communications signals from the plurality of optical interfaces; and

control for which sectors among the plurality of sectors configured for the radio interface the received plurality of uplink electrical RF communications signals are provided to one or more carriers communicatively coupled to the radio interface.

2. The apparatus of claim 1, wherein each of the plurality of optical interfaces is further configured to provide the plurality of downlink optical RF communications signals to the one or more RAUs.

3. The apparatus of claim 1, further comprising a downlink distribution matrix configured to distribute the split plurality of downlink electrical RF communications signals for the plurality of sectors.

4. The apparatus of claim 1, wherein each of plurality of radio interfaces is further configured to filter the received downlink electrical RF communications signal in a single radio band.

5. The apparatus of claim 1, wherein each of the plurality of radio interfaces further comprises a plurality of downlink sector switches each assigned to a unique sector among a plurality of sectors in the distributed antenna system, and each configured to:

receive a downlink electrical RF communications signal among the split plurality of downlink electrical RF communications signals; and

control whether the received downlink electrical RF communications signal is distributed to the unique sector assigned to the downlink sector switch.

6. The apparatus of claim 1, wherein each of the plurality of optical interfaces further comprises a plurality of downlink sector switches each assigned to a unique sector among the plurality of sectors in the distributed antenna system, and each configured to:

receive a downlink electrical RF communications signal among the split plurality of downlink electrical RF communications signals for the unique sector assigned to the downlink sector switch; and

control whether the received split downlink electrical RF communications signal is distributed to the unique sector assigned to the downlink sector switch.

7. The apparatus of claim 1, wherein each of the plurality of radio interfaces further comprises a plurality of attenuators each assigned to a sector among the plurality of sectors and configured to control a power level for the assigned sector.

8. The apparatus of claim 1, further comprising a controller configured to control for each of the plurality of radio interfaces which of the one or more sectors among the plurality of sectors the split plurality of downlink electrical RF communications signals are provided.

9. The apparatus of claim 1, further comprising a controller configured to control for each of the plurality of optical interfaces which of the one or more sectors among the plurality of sectors the split plurality of downlink electrical RF communications signals are provided.

10. The apparatus of claim 1, further comprising a controller configured to control sectorization for the plurality of radio interfaces according to a sectorization configuration stored in a sectorization table.

11. The apparatus of claim 10, wherein the sectorization table is comprised of a sector activation entry and a corresponding power level entry for each of the plurality of sectors for each of the plurality of radio interfaces.

12. The apparatus of claim 1, further comprising at least one expansion port coupled to a sector among the plurality of sectors.

13. The apparatus of claim 12, further comprising at least one additional plurality of optical interfaces coupled to the at least one expansion port.

14. The apparatus of claim 1, further comprising an external distribution matrix configured to distribute the received split plurality of downlink electrical RF communications signals for the plurality of sectors.

15. The apparatus of claim 1, wherein each of the plurality of radio interfaces is further configured to provide the received plurality of uplink electrical RF communications signals to the one or more carriers.

16. The apparatus of claim 1, further comprising an uplink distribution matrix configured to distribute the received split plurality of uplink optical RF communications signals for the plurality of sectors.

17. The apparatus of claim 1, wherein each of the plurality of optical interfaces further comprises a plurality of uplink sector switches each assigned to a unique sector among a plurality of sectors in the distributed antenna system, and each configured to:

receive an uplink optical RF communications signal among the plurality of uplink optical RF communications signals; and

control whether the received uplink optical RF communications signal is distributed to the unique sector assigned to the uplink sector switch.

18. The apparatus of claim 1, wherein each of the plurality of radio interfaces further comprises a plurality of uplink sector switches each assigned to a unique sector among the plurality of sectors in the distributed antenna system, and each configured to:

receive an uplink electrical RF communications signal among the plurality of uplink electrical RF communications signals for the unique sector assigned to the uplink sector switch; and

control whether the uplink electrical RF communications signal is distributed to the unique sector assigned to the uplink sector switch.

19. The apparatus of claim 1, further comprising a controller configured to control for each of the plurality of optical interfaces which of the one or more sectors among the plurality of sectors the split plurality of uplink optical RF communications signals are provided.

20. The apparatus of claim 1, further comprising a controller configured to control for each of the plurality of radio interfaces which of the one or more sectors among the plurality of sectors the plurality of uplink electrical RF communications signals from the plurality of optical interfaces are provided.

21. A method of distributing radio bands in one or more sectors among a plurality of sectors in a distributed antenna system, comprising:

splitting a received downlink electrical radio frequency (RF) communications signal into a plurality of downlink electrical RF communications signals;

controlling providing each of the split plurality of downlink electrical RF communications signals to one or more sectors among a plurality of sectors in a distributed antenna system;

receiving the split plurality of downlink electrical RF communications signals;

controlling for which sectors among the plurality of sectors, the received split plurality of downlink electrical RF communications signals are provided to one or more remote antenna units (RAUs) communicatively;

converting the received split plurality of downlink electrical RF communications signals into a plurality of downlink optical RF communications signals;

splitting a received uplink optical RF communications signal into a plurality of uplink optical RF communication signals,

controlling providing each of the split plurality of uplink optical RF communications signals to the one or more sectors among a plurality of sectors configured for the optical interface;

converting the received split plurality of uplink optical RF communications signals into a plurality of uplink electrical RF communications signals;

receiving the plurality of uplink electrical RF communications signals from the plurality of optical interfaces; and

controlling for which sectors among the plurality of sectors configured for the radio interface, the received plurality of uplink electrical RF communications signals are provided to one or more carriers communicatively coupled to the radio interface.

22. The method of claim 21, further comprising providing the plurality of downlink optical RF communications signals to the one or more RAUs.

23. The method of claim 21, further comprising distributing the split plurality of downlink electrical RF communications signals for the plurality of sectors in a distribution matrix.

24. The method of claim 21, further comprising controlling in a controller for each of the plurality of radio interfaces which of the one or more sectors among the plurality of sectors the split plurality of downlink electrical RF communications signals are provided.

25. The method of claim 21, further comprising controlling in a controller for each of the plurality of optical interfaces which of the one or more sectors among the plurality of sectors the split plurality of downlink electrical RF communications signals are provided.

26. The method of claim 21, further comprising controlling in a controller for each of the plurality of optical interfaces which of the one or more sectors among the plurality of sectors the split plurality of uplink optical RF communications signals are provided.

27. The method of claim 21, further comprising controlling in a controller for each of the plurality of radio interfaces which of the one or more sectors among the plurality of sectors the plurality of uplink electrical RF communications signals from the plurality of optical interfaces are provided.

28. The method of claim 21, wherein the at least one RAU is comprised of a plurality of RAUs, and further comprising assigning at least two of the plurality of RAUs to a MIMO communication configuration.

29. The method of claim 28, further comprising assigning the at least two of the plurality of RAUs in the MIMO configuration to the same sector among the plurality of sectors.