Configuring a distributed antenna system

• US 9,565,596 B2
• Filed: 08/29/2012
• Issued: 02/07/2017
• Est. Priority Date: 08/29/2011
• Status: Active Grant

• Current Assignee: Outdoor Wireless Networks LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Watkins, Daniel S., Wagstaff, Edward B., Hanson, Van E., Kummetz, Thomas
• Primary Examiner(s): Lai, Andrew
• Assistant Examiner(s): Rahman, M Mostazir
• Application Number:
  US13/597,900
• Publication Number:
  US 20130051278A1
• Time in Patent Office: 1,623 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 28/0247 based on conditions of the access network or the infrastructure network central resource management H04W28/16
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

Systems and methods for developing a configuration plan for communication transport links of a distributed antenna system are provided. The distributed antenna system includes a unit communicating with remote antenna units over the communication transport links. The unit receives signals from base stations. Characteristics of each of the signals are determined. The characteristics include, for each signal, a frequency occupancy, a digital bandwidth, and a coverage zone to which to provide the signal. The frequency occupancy includes the minimum frequency component and the maximum frequency component of the signal. The digital bandwidth is a bandwidth for communicating the signal via the communication transport links. A hardware capability of the distributed antenna system, such as a respective available bandwidth for each communication transport link, is also determined. The configuration plan for transporting the digital representations of the signals is determined based on the hardware capability and the characteristics of the signals.

Claims

1. A method comprising:

developing a configuration plan for communication transport links between a unit of a distributed antenna system and remote antenna units of the distributed antenna system, wherein the configuration plan specifies a configuration of the communication transport links for transporting digital representations of signals that are received by the unit from at least one base station, wherein developing the configuring plan comprises;

determining characteristics comprising, for each respective signal of the received signals, a respective frequency occupancy of the respective signal, a respective digital bandwidth of the respective signal, and a respective coverage zone to which to provide the respective signal, wherein the respective frequency occupancy comprises a minimum frequency component and a maximum frequency component of the respective signal, wherein the respective digital bandwidth comprises a bandwidth for communicating the respective signal via a respective communication transport link,

determining, for each of the communication transport links, a respective available bandwidth,

generating digital data streams representing respective groups of the received signals to be provided to at least one coverage zone,

sorting the digital data streams by bandwidth of the digital data streams from largest to smallest,

assigning a digital data stream having the largest bandwidth to a first communication transport link coupled to the at least one coverage zone,

selecting an unassigned digital data stream having a next largest bandwidth,

analyzing a remaining available bandwidth of the first communication transport link and a number of digital data streams assigned to the first communication transport link,

determining, based on analyzing the remaining available bandwidth, that the digital data stream having the next largest bandwidth is to be provided on a second communication transport link coupled to the at least one coverage zone, and

assigning the digital data stream having the next largest bandwidth to the second communication transport link; and

outputting the configuration plan.

2. The method of claim 1, wherein determining the respective coverage zone for the respective signal comprises determining associations of coverage zones with respective coverage sets comprising respective subsets of the received signals to be transported to the coverage zones, wherein each of the coverage zones represents a subset of the remote antenna units.

3. The method of claim 2, wherein each respective subset of the received signals comprises a respective plurality of band sets, wherein each respective band set of the respective plurality of band sets is represented by a respective digital data steam and comprises signals in a respective frequency band.

4. The method of claim 3, further comprising generating each respective digital data steam representing a respective band set by combining a respective set of digital data streams representing signals in the band set.

5. The method of claim 3, wherein determining the configuration plan comprises:

determining, for each respective band set, a respective digital bandwidth for communicating the respective digital data stream representing the respective band set based on the frequency occupancy of all signals in the respective band set.

6. The method of claim 3, wherein determining the associations of coverage zones with respective coverage sets comprises, for each respective signal of the received signals:

identifying a respective coverage zone to which to provide the respective signal;

assigning the respective signal to a respective band set; and

assigning the respective band set to a respective coverage set, the respective coverage set being associated with a coverage zone and comprising a plurality of digital data streams.

7. The method of claim 3, wherein determining the respective coverage zone for each respective signal comprises:

associating a plurality of coverage zones to the remote antenna units such that each of the coverage zones of the plurality of coverage zones is associated with a respective subset of the remote antenna units;

for each respective signal;

determining a respective frequency band of the respective signal; and

identifying a respective coverage zone to which to provide the respective signal;

determining band sets based on the plurality of coverage zones identified for the received signals and the respective frequency bands determined for the received signals; and

determining at least one coverage set based on the band sets and the plurality of coverage zones, the at least one coverage set being associated with at least one of the plurality of coverage zones and representing a subset of the band sets.

8. The method of claim 2, wherein the configuration plan is also determined based on the coverage sets associated with respective coverage zones.

9. The method of claim 1, further comprising:

receiving, by the unit, additional signals from the at least one base station subsequent to outputting the configuration plan;

determining, by the processor, additional characteristics for the additional signals received from the at least one base station, wherein the additional characteristics for each respective additional signal comprises a respective additional frequency occupancy of the respective additional signal, a respective additional digital bandwidth of the respective additional signal and a respective coverage zone to which to provide the respective additional signal;

modifying, by the processor, the configuration plan based on the hardware capability for the distributed antenna system and the additional characteristics determined for the additional signals; and

outputting the modified configuration plan.

10. A distributed antenna system comprising:

a unit configured to receive a plurality of signals from a base station and communicate the plurality of signals to remote antenna units via communication transport links of the distributed antenna system;

a processor disposed in the unit and configured for;

determining an association of coverage zones with respective coverage sets, wherein each of the coverage zones represents a subset of the remote antenna units, wherein each of the coverage sets comprises a plurality of band sets to be provided to a common coverage zone, each respective band set comprising a subset of the plurality of signals, the band set being represented by a digital data stream;

determining a hardware capability of the distributed antenna system, wherein the hardware capability comprises a respective available bandwidth for each of the communication transport links;

determining, for the distributed antenna system that includes the unit and the remote antenna units, a configuration plan based on the respective available bandwidth of each of the communication transport links, a respective frequency occupancy of each respective band set, a respective digital bandwidth of each respective band set, and associations between the coverage zones and the respective coverage sets, wherein the respective frequency occupancy comprises a minimum frequency component and a maximum frequency component of the subset of plurality of signals of the respective band set, wherein the respective digital bandwidth comprises a bandwidth for communicating the subset of the plurality of signals of the respective band set via the respective communication transport link, wherein determining the configuration plan comprises;

sorting respective band sets of each of the coverage sets by the bandwidth of the band sets from largest to smallest,

providing the band set having the largest bandwidth to a first communication transport link coupled to the coverage zone associated with the coverage set,

selecting a next largest bandwidth band set without an assigned communication transport link,

analyzing remaining available bandwidth of the first communication transport link and a number of band sets on the first communication transport link to determine that the next largest bandwidth band set is to be provided on a second communication transport link coupled to the coverage zone associated with the coverage set, and

providing the next largest bandwidth band set to the second communication transport link; and

outputting the configuration plan.

11. The distributed antenna system of claim 10, wherein the processor is further configured for:

grouping the band sets into common band sets, shared band sets, and zone-specific band sets, wherein each of the common band sets is provided to all of the coverage zones in the distributed antenna system, wherein each of the shared band sets is provided to a respective subset of the coverage zones in the distributed antenna system, wherein each of the zone-specific band sets is provided to a single respective coverage zone in the distributed antenna system;

assigning the common band sets to communication transport links in order of decreasing bandwidth;

assigning the shared band sets to communication transport links in order of decreasing bandwidth; and

assigning the zone-specific band sets to communication transport links in order of decreasing bandwidth.

12. The distributed antenna system of claim 10, wherein the configuration plan further specifies the communication transport links via which to deliver digital data streams representing the band sets to the coverage zones.

13. A distributed antenna system, comprising:

a plurality of remote antenna units grouped into a plurality of coverage zones, each of the coverage zones comprising a subset of the plurality of remote antenna units;

a unit in communication with the plurality of remote antenna units over a plurality of communication transport links, the unit configured for;

developing a configuration plan for communication transport links between the unit and the plurality of remote antenna units, wherein the configuration plan specifies a configuration of the communication transport links for transporting respective digital representations of signals received by the unit from at least one base station, wherein developing the configuring plan comprises;

determining characteristics comprising, for each respective signal of the received signals, a respective frequency occupancy of the respective signal, a respective digital bandwidth of the respective signal, and a respective coverage zone to which to provide the respective signal, wherein the respective frequency occupancy comprises a minimum frequency component and a maximum frequency component of the respective signal, wherein the respective digital bandwidth comprises a bandwidth for communicating the respective signal via a respective communication transport link,

determining, for each of the communication transport links, a respective available bandwidth,

generating digital data streams representing respective groups of the received signals to be provided to at least one coverage zone,

sorting the digital data streams by bandwidth of the digital data streams from largest to smallest,

assigning a digital data stream having the largest bandwidth to a first communication transport link coupled to the at least one coverage zone,

selecting an unassigned digital data stream having a next largest bandwidth,

analyzing a remaining available bandwidth of the first communication transport link and a number of digital data streams assigned to the first communication transport link,

determining, based on analyzing the remaining available bandwidth, that the digital data stream having the next largest bandwidth is to be provided on a second communication transport link coupled to the at least one coverage zone, and

assigning the digital data stream having the next largest bandwidth to the second communication transport link; and

outputting the configuration plan.

14. The distributed antenna system of claim 13, wherein determining the respective coverage zone for the respective signal comprises receiving an association of coverage zones with respective coverage sets, wherein each of the coverage zones represents the subset of the plurality of remote antenna units, wherein each of the coverage sets comprises a subset of signals of the received signals that are to be transported to a common coverage zone of the plurality of coverage zones.

15. The distributed antenna system of claim 14, wherein each subset of signals comprises a respective plurality of band sets, each respective band set comprising a respective set of signals having an association with the common coverage zone, the respective band set being represented by a respective digital data stream, wherein the unit is configured for generating the digital data stream by:

obtaining a set of digital data streams representing the respective set of signals;

combining the set of digital data streams into the respective digital data stream, the respective digital data stream being a single digital data stream.

16. The distributed antenna system of claim 15, wherein the configuration plan is determined based on digital bandwidths for communicating respective digital data streams representing the band sets, wherein a respective digital bandwidth of each respective digital data stream is determined by the frequencies of the signals in the respective set of signals.

17. The distributed antenna system of claim 16, wherein the hardware capability further comprises:

a number of communication transport links between the plurality of remote antenna units and the unit;

a determination of whether one or more communication transport links are shared by two or more remote antenna units; and

a maximum number of digital data streams capable of being carried by the plurality of communication transport links.

18. The distributed antenna system of claim 15, wherein determining the respective coverage zone for each respective signal comprises:

for each respective signal of the received signals;

determining a respective frequency band associated with the respective signal; and

receiving an identification of a coverage zone of the plurality of coverage zones to which to provide the respective signal;

determining band sets based on the plurality of coverage zones and the determined frequency bands of the received signals, each of the band sets representing a subset of the respective signals;

determining coverage sets based on the band sets and the plurality of coverage zones, each of the coverage sets being associated with at least one of the plurality of coverage zones and comprising a subset of the band sets.

19. The distributed antenna system of claim 13, wherein the received signals comprise a plurality of band sets, each respective band set comprising a respective subset of the received signals that is received from the at least one base station and that has at least one respective association with at least one respective coverage zone of the plurality of coverage zones, wherein determining the configuration plan comprises:

for each respective band set, determining a respective bandwidth for transmitting the respective band set based on a respective bandwidth of each signal in the respective band set; and

determining the configuration plan based on the respective available bandwidth of each of the communication transport links, the respective bandwidth for transmitting each respective band set, and associations between the plurality of coverage zones and the respective coverage sets,

wherein the configuration plan further specifies respective one of the communication transport links via which to deliver each of the band sets to the at least one respective coverage zone.

20. A method comprising:

developing a configuration plan for communication transport links between a unit of a distributed antenna system and remote antenna units of the distributed antenna system, wherein the configuration plan specifies a configuration of the communication transport links for transporting digital representations of signals that are received by the unit from at least one base station, wherein developing the configuring plan comprises;

receiving characteristics comprising, for each respective signal of the received signals, a respective frequency band of the respective signal, a respective bandwidth of the respective signal, and a respective coverage zone to which to provide the respective signal,

determining, for each of the communication transport links, a respective available bandwidth,

generating digital data streams representing respective groups of the received signals to be provided to at least one coverage zone,

sorting the digital data streams by bandwidth of the digital data streams from largest to smallest,

assigning a digital data stream having the largest bandwidth to a first communication transport link coupled to the at least one coverage zone,

selecting an unassigned digital data stream having a next largest bandwidth,

analyzing a remaining available bandwidth of the first communication transport link and a number of digital data streams assigned to the first communication transport link,

determining, based on analyzing the remaining available bandwidth, that the digital data stream having the next largest bandwidth is to be provided on a second communication transport link coupled to the at least one coverage zone, and

assigning the digital data stream having the next largest bandwidth to the second communication transport link; and

outputting the configuration plan.