Automatic configuration sub-system for distributed antenna systems

• US 10,122,511 B2
• Filed: 08/17/2017
• Issued: 11/06/2018
• Est. Priority Date: 02/11/2013
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Hanson, Van E., Williamson, Michael J.
• Primary Examiner(s): Tayong, Helene
• Application Number:
  US15/679,262
• Publication Number:
  US 20180091275A1
• Time in Patent Office: 446 Days
• Field of Search: 375267
• CPC Class Codes: H04B 17/12 of transmit antennas, e.g. of the amplitude or phase
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 16/04 Traffic adaptive resource partitioning
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 16/20 for indoor coverage or short range network deployment
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/085 Access point devices with remote components
• CPC Class Codes: H04W 92/20 between access points

Abstract

Systems and methods for automatically configuring a distributed antenna system are provided. A configuration sub-system of the distributed antenna system can identify signal parameters for downlink signals received from one or more base stations via inputs of a unit in the distributed antenna system. The configuration sub-system can automatically determine a configuration plan for the distributed antenna system based on the automatically identified signal parameters. The configuration plan specifies how to combine subsets of the downlink signals for routing to remote antenna units of the distributed antenna system.

Claims

1. A unit of a distributed antenna system, the unit comprising:

an input section configured to receive a plurality of downlink signals from at least one base station;

a processing device communicatively coupled to the input section and configured to;

identify a plurality of signal parameters for the plurality of downlink signals, and

automatically determine a configuration plan for the distributed antenna system based on the plurality of signal parameters, wherein the configuration plan specifies different combinations of subsets of the plurality of downlink signals for routing to a plurality of remote antenna units of the distributed antenna system;

wherein the processing device is configured to identify the plurality of signal parameters for the plurality of downlink signals by;

for each frequency band used by the distributed antenna system;

configuring a receiver of the unit to receive respective signals in the frequency band, and

determining whether a respective power level for the respective signals in the frequency band exceeds a threshold;

identifying at least one frequency band having a power level exceeding the threshold,

determining a signal power distribution among frequencies in the at least one frequency band, and

determining the plurality of signal parameters based on the signal power distribution.

2. The unit of claim 1, wherein the plurality of signal parameters comprises at least one of:

a respective power spectral density for each frequency band used by the distributed antenna system,

a respective lowest frequency for each frequency band used by the distributed antenna system,

a respective highest frequency for each frequency band used by the distributed antenna system,

a center frequency of all frequency channels used by the distributed antenna system,

a bandwidth of all frequency channels used by the distributed antenna system, and

a respective modulation type for each of the plurality of downlink signals.

3. The unit of claim 1, wherein the processing device is configured to automatically determine the configuration plan for the distributed antenna system by:

determining that the plurality of downlink signals includes a plurality of sectors from a common base station;

assigning a first sector of the plurality of sectors to a first subset of the plurality of remote antenna units configured to service a first coverage zone; and

assigning a second sector of the plurality of sectors to a second subset of the plurality of remote antenna units configured to service a second coverage zone, wherein the second sector is assigned to the second subset of remote antenna units based on an absence of overlap between the first and second coverage zones.

4. The unit of claim 1, wherein the processing device is configured to automatically determine the configuration plan for the distributed antenna system by:

determining that the plurality of downlink signals includes a first subset of downlink signals in a first frequency sub-band and a second subset of downlink signals in a second frequency sub-band at least partially overlapping the first frequency sub-band;

assigning the first subset of downlink signals to a first subset of the plurality of remote antenna units servicing a first coverage zone; and

assigning the second subset of downlink signals to a second subset of the plurality of remote antenna units servicing a second coverage zone, wherein the first subset and the second subsets are assigned to the respective first and second coverage zones based on the second frequency sub-band at least partially overlapping the first frequency sub-band.

5. The unit of claim 1, wherein the processing device is configured to automatically determine the configuration plan for the distributed antenna system by:

determining that the plurality of downlink signals includes at least one subset of signals comprising multiple-input-multiple output signals; and

assigning the at least one subset of signals to a subset of the plurality of remote antenna units servicing a common coverage zone and communicate multiple-input-multiple output signals.

6. The unit of claim 1, wherein the processing device is further configured to:

identify at least one routing conflict with respect to a subset of the plurality of remote antenna units and a subset of the plurality of downlink signals;

determine at least one configuration change for resolving the at least one routing conflict; and

output the at least one configuration change with the configuration plan.

7. The unit of claim 1, wherein the processing device is further configured to identify the plurality of signal parameters and automatically determine the configuration plan in response to a change with respect to the at least one base station or the plurality of remote antenna units in communication with the unit.

8. The unit of claim 1, further comprising a combining section configured to combine subsets of the plurality of downlink signals into combined downlink signals,

wherein the processing device is further configured to output a control signal causing the combining section to combine the subsets of downlink signals based on the configuration plan.

9. The unit of claim 8, further comprising an output section configured to route the combined downlink signals to the plurality of remote antenna units,

wherein the processing device is communicatively coupled to the output section and is further configured to output an additional control signal causing the output section to route the combined downlink signals based on the configuration plan.

10. The unit of claim 1, wherein the processing device is further configured to receive information about at least one of the plurality of signal parameters via the input section.

11. The unit of claim 1, further comprising a data interface device configured to communicate with the at least one base station, wherein the processing device is further configured to receive information about at least one of the plurality of signal parameters via the data interface device.