# US 2022/0286342 A1 · Adaptive radio frequency communication

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- Number: US 2022/0286342 A1
- Document ID: US20220286342A1
- Status: Published application
- Kind: A1
- Application number: 17/249,590
- Filed: 2021-03-05
- Published: 2022-09-08
- Earliest claimed: 2021-03-05
- Assignees: Perspecta Labs Inc.
- Applicants: Perspecta Labs Inc.
- Inventors: William JOHNSON; Kiran REGE; Achilles KOGIANTIS
- Web page: https://patentgrep.com/patent/US20220286342A1

## CPC

- H04J 11/0093: {Neighbour cell search}
- H04L 27/2657: {Carrier synchronisation}
- H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
- H04B 7/088: {using beam selection}
- H04L 27/0014: {Carrier regulation (of chaotic carriers H04L27/001; for multicarrier receivers H04L27/2657)}
- H04W 48/16: Discovering, processing access restriction or access information
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

There is set forth herein, in one embodiment, receiving, by a transceiver of a UE device an aggregate signal stream, the aggregate signal stream including an aggregate of base station downlink signal streams from a plurality of base stations; processing the aggregate signal stream and detecting, from the processing of the aggregate signal stream, a set of base stations in communication range of the UE device, wherein the set of base stations include a current serving base station and a scanning base station; determining, from the processing of the aggregate signal stream, a Doppler shifted center frequency of a downlink scanning signal stream received from the scanning base station; and enhancing, in dependence on the Doppler shifted center frequency, the downlink scanning signal stream associated to the scanning base station.

## Claims

### Claim 1

A method comprising:
receiving, by a transceiver of a UE device an aggregate signal stream, the aggregate signal stream including an aggregate of base station downlink signal streams from a plurality of base stations;
processing the aggregate signal stream and detecting, from the processing of the aggregate signal stream, a set of base stations in communication range of the UE device, wherein the set of base stations include a current serving base station and a scanning base station;
determining, from the processing of the aggregate signal stream, a Doppler shifted center frequency of a downlink scanning signal stream received from the scanning base station; and
enhancing, in dependence on the Doppler shifted center frequency, the downlink scanning signal stream associated to the scanning base station.

### Claim 2 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a serving signal stream from the serving base station.

### Claim 3 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a serving signal stream from the serving base station, wherein the serving signal stream from the serving base station is a frequency compensated serving signal stream from the serving base station.

### Claim 4 (depends on 3)

The method of claim 3, wherein the set of base stations include the current serving base station, the scanning base station and a second scanning base station, wherein the combining the frequency compensated scanning signal stream with a serving signal stream from the serving base station includes further combining the frequency compensated scanning signal stream with a second base station signal stream from the second scanning base station.

### Claim 5 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a frequency compensated serving signal stream from the serving base station, wherein the combining includes weighting the scanning signal stream and combining the weighted and frequency compensated scanning signal stream from the scanning base station with a weighted and frequency compensated serving signal stream from the serving base station.

### Claim 6 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a frequency compensated serving signal stream from the serving base station, and wherein the method includes presenting the combined signal to a down converter of the transceiver that includes a down conversion local oscillator signal matched to a network reference center frequency.

### Claim 7 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a frequency compensated serving signal stream from the serving base station, and wherein the combining includes combining a scanning signal enhanced aggregated signal in which the scanning signal stream has been enhanced with a serving signal enhanced aggregated signal in which the serving signal stream has been enhanced.

### Claim 8 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a frequency compensated serving signal stream from the serving base station, and wherein the combining includes combining a scanning signal enhanced aggregated signal in which the scanning signal stream has been enhanced with a serving signal enhanced aggregated signal in which the serving signal stream has been enhanced, wherein the method includes applying scanning signal enhancing beam forming weights to a set of antennas for enhancement of the scanning signal stream within the scanning signal enhanced aggregated signal, wherein the method includes applying serving signal enhancing beam forming weights to the set of antennas for enhancement of the serving signal stream within the serving signal enhanced aggregated signal.

### Claim 9 (depends on 1)

The method of claim 1, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a frequency compensated serving signal stream from the serving base station, and wherein the combining includes combining a scanning signal enhanced aggregated signal in which the scanning signal stream has been enhanced with a serving signal enhanced aggregated signal in which the serving signal stream has been enhanced, wherein enhancement of the scanning signal stream within the scanning signal enhanced aggregated signal has included use of a first set of one or more directional antenna having a first mounting orientation, wherein enhancement of the serving signal stream within the serving signal enhanced aggregated signal has included use of a second set of one or more directional antenna having a second mounting orientation.

### Claim 10 (depends on 1)

The method of claim 1, wherein the enhancing includes providing a tracking local oscillator signal for optimized down conversion of the scanning signal stream, the tracking local oscillator signal for down conversion of scanning signal stream dynamically tracking changes in the Doppler shifted center frequency of the scanning signal stream.

### Claim 11 (depends on 1)

The method of claim 1, wherein the enhancing includes providing a tracking local oscillator signal for optimized down conversion of the scanning signal stream while maintaining a tracking local oscillator signal optimized for down conversion of a downlink serving signal stream, the tracking local oscillator signal for down conversion of scanning signal stream dynamically tracking changes in the Doppler shifted center frequency of the scanning signal stream, the tracking local oscillator signal for down conversion of the serving signal stream dynamically tracking changes in a center frequency of the serving signal stream.

### Claim 12 (depends on 1)

The method of claim 1, wherein the enhancing includes applying beam forming weights to a set of antennas connected to the transceiver, the antennas of the set of antennas respectively picking up aggregated signals from multiple base stations.

### Claim 13

A system comprising:
a signal processing circuit, wherein the signal processing circuit is configured for performing:
receiving, by a transceiver of a UE device an aggregate signal stream, the aggregate signal stream including an aggregate of base station downlink signal streams from a plurality of base stations;
processing the aggregate signal stream and detecting, from the processing of the aggregate signal stream, a set of base stations in communication range of the UE device, wherein the set of base stations include a current serving base station and a scanning base station;
determining, from the processing of the aggregate signal stream, a Doppler shifted center frequency of a downlink scanning signal stream received from the scanning base station; and
enhancing, in dependence on the Doppler shifted center frequency, the downlink scanning signal stream associated to the scanning base station.

### Claim 14

A method comprising:
receiving by a transceiver of a UE device an aggregate signal stream, the aggregate signal stream including an aggregate of base station downlink signal streams from a plurality of base stations;
processing the aggregate signal stream and detecting, from the processing of the aggregate signal stream, a set of base stations in communication range of the UE device; and
enhancing a downlink scanning signal stream associated to a scanning base station in dependence on the detecting indicating that the scanning base station is included in the set of base stations in communication range of the UE device.

### Claim 15 (depends on 14)

The method of claim 14, wherein the method includes, from iterative performance of the processing, storing into a data repository historical parameter values for the set of base stations in connection range of the UE device, wherein the method includes examining values of the historical parameter values and performing the enhancing the downlink scanning signal stream associated to a scanning base station in dependence on the examining.

### Claim 16 (depends on 14)

The method of claim 14, wherein the method includes performing the enhancing the downlink scanning signal stream associated to a scanning base station in dependence on a determined signal strength of the scanning signal stream satisfying a threshold.

### Claim 17 (depends on 14)

The method of claim 14, wherein the enhancing the downlink scanning signal stream associated to a scanning base station includes applying beam forming weights to a set of antennas connected to the transceiver responsively to a channel estimation associated to the scanning base station, the antennas of the set of antennas respectively picking up aggregated signals from multiple base stations.

### Claim 18 (depends on 14)

The method of claim 14, wherein the method includes, with iterative performance of the processing, storing into a data repository historical Doppler shift parameter values for the set of base stations in connection range of the UE device, wherein method includes examining values of the Doppler shift historical parameter values and performing the enhancing the downlink scanning signal stream associated to a scanning base station in dependence on the examining.

### Claim 19

(canceled)

### Claim 20

(canceled)

### Claim 21

(canceled)

### Claim 22

(canceled)

### Claim 23

(canceled)

### Claim 24

(canceled)

### Claim 25

(canceled)

### Claim 26

(canceled)

### Claim 27

(canceled)

### Claim 28

(canceled)

### Claim 29

(canceled)

### Claim 30

(canceled)

### Claim 31

(canceled)

### Claim 32

(canceled)

### Claim 33 (depends on 13)

The system of claim 13, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a serving signal stream from the serving base station.

### Claim 34 (depends on 13)

The system of claim 13, wherein the enhancing includes frequency compensating the downlink scanning signal stream using a scanning base station Doppler shift parameter value that specifies an amount of a Doppler shift defined by the Doppler shifted center frequency and combining the frequency compensated scanning signal stream with a frequency compensated serving signal stream from the serving base station, and wherein the combining includes combining a scanning signal enhanced aggregated signal in which the scanning signal stream has been enhanced with a serving signal enhanced aggregated signal in which the serving signal stream has been enhanced, wherein the method includes applying scanning signal enhancing beam forming weights to a set of antennas for enhancement of the scanning signal stream within the scanning signal enhanced aggregated signal, wherein the method includes applying serving signal enhancing beam forming weights to the set of antennas for enhancement of the serving signal stream within the serving signal enhanced aggregated signal.
