Multi-source same-cell wireless distribution system (WDS) with dynamic source adaptation

Patent metadata

Field	Value
Publication number	US-10312972-B2
Application number	US-201715692815-A
Country	US
Kind code	B2
Filing date	Aug 31, 2017
Priority date	Feb 28, 2017
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

Embodiments of the disclosure relate to a multi-source same-cell wireless distribution system (WDS) with dynamic source adaptation. In this regard, the WDS includes multiple remote units each configured to distribute a downlink communications signal having identical cell identification in a respective coverage area. The WDS includes a signal distribution circuit communicatively coupled to multiple signal sources. The signal distribution circuit can dynamically determine a selected coverage cell among multiple coverage cells having a client device load higher than a predefined load threshold. Accordingly, the signal distribution circuit can redistribute the defined source capacity of a selected signal source among the multiple signal sources exclusively to the selected coverage cell. By dynamically distributing more capacity to the selected coverage cell with higher client device load, it is possible to increase data throughput, thus helping to provide improved user experience in the selected coverage cell.

First claim

What is claimed is:

1. A wireless distribution system (WDS), comprising:
a plurality of signal sources associated with an identical cell identification, wherein each of the plurality of signal sources has a defined source capacity and configured to distribute a downlink communications signal comprising the identical cell identification, wherein the WDS does not include a macro coverage cell associated with the identical cell identification;
a plurality of remote units each configured to distribute the downlink communications signal to one or more client devices in a respective coverage cell among a plurality of coverage cells associated with the identical cell identification in the WDS; and
a signal distribution circuit communicatively coupled to the plurality of signal sources, the signal distribution circuit configured to:
receive the downlink communications signal from each of the plurality of signal sources;
determine a selected coverage cell among the plurality of coverage cells having a client device load higher than a predefined load threshold;
determine a selected signal source among the plurality of signal sources for providing the respective defined source capacity to the selected coverage cell; and
distribute the downlink communications signal received from the selected signal source exclusively to the selected coverage cell.

2. The WDS of claim 1 , wherein the signal distribution circuit is further configured to:
determine one or more second selected coverage cells among the plurality of coverage cells having the client device load lower than the predefined load threshold;
determine a second selected signal source among the plurality of signal sources for sharing the respective defined source capacity between the one or more second selected coverage cells; and
distribute the downlink communications signal received from the second selected signal source to the one or more second selected coverage cells.

3. The WDS of claim 2 , wherein the one or more second selected coverage cells overlap at least partially with the selected coverage cell.

4. The WDS of claim 2 , wherein the defined source capacity of the selected signal source equals the defined source capacity of the second selected signal source.

5. The WDS of claim 2 , wherein the defined source capacity of the selected signal source is greater than the defined source capacity of the second selected signal source.

6. The WDS of claim 2 , wherein the defined source capacity of the selected signal source is less than the defined source capacity of the second selected signal source.

7. The WDS of claim 2 , wherein the signal distribution circuit is further configured to:
receive a plurality of client device load reports from the plurality of remote units; and
determine the client device load in each of the plurality of coverage cells based on the plurality of client device load reports.

8. The WDS of claim 2 , wherein the signal distribution circuit is further configured to:
receive an uplink communications signal from the selected coverage cell;
provide the uplink communications signal received from the selected coverage cell exclusively to the selected signal source among the plurality of signal sources;
receive the uplink communications signal from the one or more second selected coverage cells; and
provide the uplink communications signal received from the one or more second selected coverage cells to the second selected signal source.

9. The WDS of claim 8 , wherein each of the plurality of remote units is further configured to:
distribute the downlink communications signal in an identical downlink radio frequency (RF) spectrum; and
receive the uplink communications signal in an identical uplink RF spectrum.

10. The WDS of claim 8 , wherein the signal distribution circuit comprises:
a control circuit configured to:
receive the downlink communications signal from each of the plurality of signal sources;
determine the selected coverage cell among the plurality of coverage cells having the client device load higher than the predefined load threshold;
determine the selected signal source among the plurality of signal sources for providing the respective defined source capacity to the selected coverage cell;
determine the one or more second selected coverage cells among the plurality of coverage cells having the client device load lower than the predefined load threshold; and
determine the second selected signal source among the plurality of signal sources for sharing the respective defined source capacity between the one or more second selected coverage cells; and

a signal distributor/combiner circuit configured to:
distribute the downlink communications signal received from the selected signal source exclusively to the selected coverage cell; and
distribute the downlink communications signal received from the second selected signal source to the one or more second selected coverage cells.

11. The WDS of claim 10 , wherein the signal distributor/combiner circuit is further configured to:
provide the uplink communications signal received from the selected coverage cell exclusively to the selected signal source among the plurality of signal sources; and
provide the uplink communications signal received from the one or more second selected coverage cells to the second selected signal source.

12. The WDS of claim 8 , further comprising a central unit coupled to the plurality of remote units via a plurality of communications mediums, wherein the central unit comprises the signal distribution circuit.

13. The WDS of claim 12 , wherein:
the plurality of communications mediums comprises a plurality of optical fiber-based communications mediums;
the central unit comprises electrical-to-optical (E/O) converters configured to generate a plurality of downlink optical fiber-based communications signals based on the downlink communications signal for distribution to the plurality of remote units;
the plurality of remote units comprises:
remote unit optical-to-electrical (O/E) converters configured to convert the plurality of downlink optical fiber-based communications signals into the downlink communications signal; and
remote unit E/O converters configured to generate a plurality of uplink optical fiber-based communications signals based on the uplink communications signal for distribution to the central unit; and

the central unit further comprises O/E converters configured to convert the plurality of uplink optical fiber-based communications signals into the uplink communications signal.

14. A method for supporting multi-source same-cell operation with dynamic source adaptation in a wireless distribution system (WDS), comprising:
providing a plurality of remote units each configured to distribute a downlink communications signal comprising an identical cell identification to one or more client devices in a respective coverage cell among a plurality of coverage cells in the WDS, wherein the WDS does not include a macro coverage cell associated with the identical cell identification;
communicatively coupling a signal distribution circuit to a plurality of signal sources each having a defined source capacity and associated with the identical cell identification, the plurality of signal sources configured to distribute the downlink communications signal to the WDS;
receiving the downlink communications signal from each of the plurality of signal sources;
determining a selected coverage cell among the plurality of coverage cells having a client device load higher than a predefined load threshold;
determining a selected signal source

Assignees

• Corning Inc

Inventors

• Abraha Solomon Tesfay
• He Chao
• Ng'Oma Anthony

Classifications

• H04B10/25753

  Distribution optical network, e.g. between a base station and a plurality of remote units · CPC title

• H04B7/022

  Site diversity; Macro-diversity (using two or more spaced independent antennas H04B7/04) · CPC title

• H04B7/024 Primary

  Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title

• H04W4/33 Primary

  for indoor environments, e.g. buildings · CPC title

• H04B10/25754

  Star network topology · CPC title