Wireless communications systems supporting carrier aggregation and selective distributed routing of secondary cell component carriers based on transmission power demand or signal

Patent metadata

Field	Value
Publication number	US-11223995-B2
Application number	US-201916264314-A
Country	US
Kind code	B2
Filing date	Jan 31, 2019
Priority date	Sep 26, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

Wireless communications systems supporting carrier aggregation and selective distributed routing of secondary cell component carriers based on transmission power demand or signal quality are disclosed. The wireless communications system includes a signal router circuit communicatively coupled to a signal source. The signal router circuit is configured to distribute a primary cell component carrier, including control information, to each of multiple remote units to be distributed to any mobile device in a respective coverage area of any remote unit to avoid the need to support handovers. In addition, the signal router circuit is configured to selectively distribute one or more secondary cell component carriers to any subset of the remote units based on at least one of transmission power demand or signal quality associated with the remote units.

First claim

What is claimed is:

1. A wireless communications system, comprising:
a signal router circuit, comprising:
a plurality of signal source inputs each configured to receive a component carrier among a plurality of component carriers, the plurality of component carriers comprising a primary cell component carrier and a secondary cell component carrier;
a plurality of signal outputs each configured to couple to a remote unit among a plurality of remote units; and
a routing control input configured to receive a routing control signal indicating a routing configuration for routing the primary cell component carrier and the secondary cell component carrier to the plurality of signal outputs;

a controller circuit comprising a routing control output coupled to the routing control input, the controller circuit configured to communicate the routing control signal indicating the routing configuration for:
routing the primary cell component carrier to each of the plurality of signal outputs; and
routing the secondary cell component carrier to a subset of the plurality of signal outputs based on at least one of a transmission power demand or a signal quality associated with the plurality of signal outputs; and

a monitoring circuit communicatively coupled to the controller circuit and configured to:
monitor wireless capacity demand associated with the plurality of signal outputs; and
monitor the signal quality associated with the plurality of signal outputs based on a signal to noise ratio (SNR) measurement;
wherein the routing configuration is further based on the wireless capacity demand associated with the plurality of signal outputs; and

wherein the controller circuit determines the subset of the plurality of signal outputs for routing the secondary cell component carrier based on the subset of the plurality of signal outputs being associated with a respective wireless capacity demand which exceeds a capacity demand threshold.

2. The wireless communications system of claim 1 , wherein the controller circuit is further configured determine a respective transmission power demand for each of the plurality of signal outputs based on a respective signal quality associated with the respective signal output.

3. The wireless communications system of claim 2 , wherein the controller circuit determines the subset of the plurality of signal outputs for routing the secondary cell component carrier based on the respective transmission power demand of the subset of the plurality of signal outputs being below a power demand threshold.

4. The wireless communications system of claim 3 , further comprising a monitoring circuit communicatively coupled to the controller circuit and configured to monitor a respective signal to noise ratio (SNR) measurement associated with each of the plurality of signal outputs;
wherein the respective signal quality is based on the respective SNR measurement.

5. The wireless communications system of claim 4 , wherein:
the monitoring circuit is further configured to monitor wireless capacity demand associated with the plurality of signal outputs; and
the routing configuration is further based on the wireless capacity demand associated with the plurality of signal outputs.

6. The wireless communications system of claim 3 , further comprising a monitoring circuit communicatively coupled to the controller circuit and a signal source circuit;
wherein:
the monitoring circuit is configured to receive an interference measurement from the signal source circuit; and
the respective signal quality is based on the interference measurement.

7. The wireless communications system of claim 1 , wherein the controller circuit further determines the subset of the plurality of signal outputs for routing the secondary cell component carrier based on the subset of the plurality of signal outputs being associated with a respective signal quality above a quality threshold.

8. The wireless communications system of claim 1 , wherein the controller circuit is further configured to:
determine an optimal number of secondary cell component carriers associated with a first of the plurality of signal outputs; and
determine the routing configuration based on the optimal number of secondary cell component carriers.

9. The wireless communications system of claim 1 , further comprising the plurality of remote units each coupled to a corresponding signal output of the plurality of signal outputs;
wherein in response to receiving the routing configuration from the controller circuit, the signal router circuit is configured to:
route the primary cell component carrier over each of the plurality of signal outputs to each of the plurality of remote units; and
route the secondary cell component carrier over the subset of the plurality of signal outputs to a corresponding subset of the plurality of remote units.

10. The wireless communications system of claim 9 , wherein:
the plurality of signal source inputs are each configured to receive the component carrier among the plurality of component carriers in baseband; and
the signal router circuit is further configured to route the primary cell component carrier and the secondary cell component carrier in baseband.

11. The wireless communications system of claim 10 , wherein:
each of the plurality of remote units is configured to transmit the primary cell component carrier on a first wireless channel; and
the subset of the plurality of remote units is configured to transmit the secondary cell component carrier on a second wireless channel.

12. The wireless communications system of claim 1 , wherein:
the secondary cell component carrier is a first secondary cell component carrier;
the subset of the plurality of signal outputs is a first subset of the plurality of signal outputs;
the controller circuit is further configured to communicate the routing control signal indicating the routing configuration for routing a second secondary cell component carrier of the plurality of component carriers to a second subset of the plurality of signal outputs less than all of the plurality of signal outputs; and
the first subset of the plurality of signal outputs includes at least one signal output not included in the second subset of the plurality of signal outputs.

13. The wireless communications system of claim 1 , further comprising a signal source circuit coupled to the plurality of signal source inputs of the signal router circuit;
wherein the signal source circuit is configured to:
transmit the primary cell component carrier to a first signal source input of the plurality of signal source inputs; and
transmit the secondary cell component carrier to a second signal source input of the plurality of signal source inputs.

14. The wireless communications system of claim 13 , wherein the signal source circuit comprises an Evolved Node B (eNB) base station of a telecommunications network.

15. The wireless communications system of claim 1 , further comprising the plurality of remote units each coupled to a corresponding signal output of the plurality of signal outputs by an optical fiber communications link;
wherein:
each of the plurality of signal outputs comprises an electrical-to-optical (E-O) converter configured to transmit a respective optical communications signal by the optical fiber communications link according to the routing configuration for the plurality of component carriers; and
each remote unit of the plurality of remote units comprises an optical-to-electrical (O-E) converter configured to convert the respective optical communications signal into a respect

Assignees

• Corning Optical Communications LLC

Inventors

• Harel Dror

Classifications

• H04W40/08

  based on transmission power · CPC title

• H04W40/16 Primary

  based on interference · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W84/045

  using private Base Stations, e.g. femto Base Stations, home Node B · CPC title