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

Patent metadata

Field	Value
Publication number	US-11758462-B2
Application number	US-202117559526-A
Country	US
Kind code	B2
Filing date	Dec 22, 2021
Priority date	Sep 26, 2018
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

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 method for selectively routing a primary cell component carrier and a secondary cell component carrier in a wireless communications system, comprising:
receiving the primary cell component carrier;
receiving the secondary cell component carrier;
routing the primary cell component carrier to each of the plurality of remote units;
routing the secondary cell component carrier to a first remote unit and not to a second remote unit of the plurality of remote units based on at least one of a transmission power demand or a signal quality associated with the plurality of remote units;
monitoring wireless capacity demand associated with the plurality of signal outputs;
monitoring the signal quality associated with the plurality of signal outputs based on a signal to noise ratio;
determining 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; and
monitoring a signal to noise ratio (SNR) measurement associated with each of the plurality of remote units, wherein the signal quality is based on the signal to noise ratio.

2. The method of claim 1 , further comprising determining a respective transmission power demand for each of the plurality of remote units based on a respective SNR associated with a respective remote unit, wherein the routing the secondary cell component carrier is based on the power demand for the first remote unit being below a power demand threshold.

3. The method of claim 1 , further comprising monitoring wireless capacity demand associated with each of the plurality of remote units, wherein the routing the secondary cell component carrier is based on the wireless capacity demand associated with each of the plurality of remote units.

4. The method of claim 1 , wherein:
the primary cell component carrier is received and routed in baseband; and
the secondary cell component carrier is received and routed in baseband.

5. The method of claim 1 , wherein the receiving the primary cell component carrier comprises:
establishing a downlink with a telecommunications network, the downlink receiving data to be transmitted to a mobile device; and
establishing an uplink with the telecommunications network, the uplink transmitting data to the telecommunications network.

6. 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, the plurality of remote units each coupled to a corresponding signal output of the plurality of signal outputs by an optical fiber communications link; 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;

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 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

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.

7. The wireless communications system of claim 6 , 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 respective electrical communications signal to interface with a radio frequency (RF) transmitter/receiver.

8. The wireless communications system of claim 6 , 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.

9. The wireless communications system of claim 6 , 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.

10. The wireless communications system of claim 6 , 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.

11. The wireless communications system of claim 6 , 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 respective electrical communications signal to interface with a radio frequency (RF) transmitter/receiver.

12. A wireless communications system, comprising:
a signal router circuit, comprising:
a plurality of signal source inputs configured to receive a component carrier among a plurality of component carriers, the plurality of component carriers comprising at least one of a primary cell component carrier and a secondary cell component carrier;
a plurality of signal outputs configured to couple to a remote unit among a plurality of remote units, the plurality of remote units each coupled to a corresponding signal output of the plurality of signal outputs by an optical fiber communications link; and
a routing control input configured to receive a routing control signal indicating a routing configuratio

Assignees

• Corning Optical Communications LLC

Inventors

• Harel Dror

Classifications

• H04W40/16 Primary

  based on interference · CPC title

• H04W40/08

  based on transmission power · 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