# US 10,375,713 B2 · Multi-technology coexistence in the unlicensed intelligent transportation service spectrum

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- Number: US 10,375,713 B2
- Document ID: US10375713B2
- Status: Granted
- Kind: B2
- Application number: 15/644,378
- Filed: 2017-07-07
- Published: 2018-01-11
- Granted: 2019-08-06
- Earliest claimed: 2016-07-08
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Kapil Gulati; Gaurav Gupta; Shailesh Patil; Durga Prasad Malladi; Sudhir Kumar Baghel; Marco Papaleo
- Web page: https://patentgrep.com/patent/US10375713B2

## CPC

- H04W 72/1215: {for collaboration of different radio technologies}
- G06Q 50/40: Business processes related to the transportation industry (shipping G06Q10/083)
- H04L 5/0005: {Time-frequency}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 27/0006: {Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio (for spectrum sharing between different networks H04W16/14)}
- H04W 16/14: Spectrum sharing arrangements {between different networks}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 74/0816: with collision avoidance
- H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)}
- H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A framework to manage coexistence of multiple technologies over multiple channels is desired. The apparatus may be a user equipment (UE). The UE detects whether a second technology different from a first communication technology utilized by the UE is active on a first channel. The UE performs, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

## Claims

### Claim 1

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the detecting whether the second communication technology is active on the first channel comprises:
monitoring the first channel for one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM,
wherein the detecting whether the second communication technology is active on the first channel is based on the one or more messages; and
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

### Claim 2 (depends on 1)

The method of claim 1, wherein the performing the action comprises
determining, based on the detection, whether to stay on a first channel with the first communication technology, or to vacate the first channel of the first communication technology, or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via time division multiplex (TDM),
wherein the action is performed based on the determination.

### Claim 3 (depends on 2)

The method of claim 2, wherein the determination is based on configuration information provided to the UE, the configuration information including at least one of:
priority levels of the first channel and second channel for the first communication technology,
one or more geographical areas in which the first channel is allowed to be used,
one or more geographical areas in which the second channel is allowed to be used, or
an action to be performed upon detection of the second communication technology on each of the first and second channels.

### Claim 4 (depends on 3)

The method of claim 3, where the action is based on a type of the second communication technology.

### Claim 5 (depends on 2)

The method of claim 2, further comprising:
if the UE determines to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM, transmitting a message to one or more other UEs, the message indicating the determination by the UE.

### Claim 6 (depends on 2)

The method of claim 2, further comprising:
if the UE determines to vacate the first channel of the first communication technology, utilizing the second channel with the first communication technology.

### Claim 7 (depends on 1)

The method of claim 1, wherein the detecting whether the second communication technology is active on the first channel further comprises:
if one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology are received, determining that the second communication technology is detected on the first channel; and
if no message indicating that another UE has determined to vacate the first channel of the first communication technology is received, determining that the second communication technology is not detected on the first channel.

### Claim 8

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel;
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel;
receiving one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM; and
relaying the one or more messages to another UE.

### Claim 9

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel;
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel;
receiving one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM;
relaying the one or more message if a relay hop count is less than a relay hop count limit, wherein the one or more message indicates the relay hop count; and
refraining from relaying the one or more message if the relay hop count is greater than or equal to the relay hop count limit.

### Claim 10

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel; and
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel, wherein the performing the action comprises
determining, based on the detection, whether to stay on a first channel with the first communication technology, or to vacate the first channel of the first communication technology, or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via time division multiplex (TDM), wherein the action is performed based on the determination;
if the UE determines to vacate the first channel of the first communication technology, utilizing the second channel with the first communication technology;
performing, periodically, a checking session for availability of the first channel while utilizing the second channel with the first communication technology; and
if the first channel is available based on the checking session, utilizing the first channel with the first communication technology.

### Claim 11 (depends on 10)

The method of claim 10, wherein the performing the checking session comprises:
determining that the first channel is available if a number of consecutive checking sessions finding availability of the first channel exceeds a checking session threshold.

### Claim 12 (depends on 11)

The method of claim 11, wherein the performing the checking session further comprises:
increasing the checking session threshold if the first channel determined to be available becomes unavailable within a predefined time period.

### Claim 13 (depends on 10)

The method of claim 10, wherein the performing the checking session comprises:
if the UE is a multi-mode UE capable of utilizing the first communication technology and the second communication technology, refraining from utilizing the first communication technology and the second communication technology on the first channel during the checking time duration.

### Claim 14

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the detecting whether the second communication technology is active on the first channel comprises receiving a sequence indicating the second communication technology; and
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

### Claim 15

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the detecting whether the second communication technology is active on the first channel comprises:
receiving a sequence unique to the second communication technology; and
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

### Claim 16

A method of wireless communication by a user equipment (UE), comprising:
detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the detecting whether the second communication technology is active on the first channel comprises:
identifying, on the first channel, one or more resources whose energy levels are greater than an energy threshold;
determining that the second communication technology is detected on the first channel if a fraction based on an amount of decodable energy of the one or more resources on the first channel and an overall energy of the one or more resources is less than an fraction threshold, and
determining that the second communication technology is not detected on the first channel if the fraction based on the amount of the decodable energy of the one or more resources on the first channel and the overall energy of the one or more resources is greater than the fraction threshold; and
performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

### Claim 17

A user equipment (UE) for wireless communication, comprising:
means for detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the means for detecting whether the second communication technology is active on the first channel is configured to:
monitor the first channel for one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM,
wherein the means for detecting whether the second communication technology is active on the first channel is based on the one or more messages; and
means for performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

### Claim 18 (depends on 17)

The UE of claim 17, wherein the means for performing the action is configured to:
determine, based on the detection, whether to stay on a first channel with the first communication technology, or to vacate the first channel of the first communication technology, or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via time division multiplex (TDM),
wherein the action is performed based on the determination.

### Claim 19 (depends on 18)

The UE of claim 18, further comprising:
means for transmitting a message to one or more other UEs if the UE determines to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM, the message indicating the determination by the UE.

### Claim 20

A user equipment (UE) for wireless communication, comprising:
means for detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel;
means for performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel;
means for receiving one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM; and
means for relaying the one or more messages to another UE.

### Claim 21

A user equipment (UE) for wireless communication, comprising:
means for detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel;
means for performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel;
means for receiving one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM;
means for relaying the one or more message if a relay hop count is less than a relay hop count limit, wherein the one or more message indicates the relay hop count; and
means for refraining from relaying the one or more message if the relay hop count is greater than or equal to the relay hop count limit.

### Claim 22

A user equipment (UE) for wireless communication, comprising:
means for detecting whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel; and
means for performing, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel; wherein the means for performing the action is configured to:
determine, based on the detection, whether to stay on a first channel with the first communication technology, or to vacate the first channel of the first communication technology, or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via time division multiplex (TDM), wherein the action is performed based on the determination;
means for utilizing the second channel with the first communication technology if the UE determines to vacate the first channel of the first communication technology.

### Claim 23

A user equipment (UE) for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
detect whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the at least one processor is configured to:
monitoring the first channel for one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM,
wherein the at least one processor is configured to detect whether the second communication technology is active on the first channel based on the one or more messages; and
perform, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.

### Claim 24 (depends on 23)

The UE of claim 23, wherein the at least one processor configured to perform the action is configured to:
determine, based on the detection, whether to stay on a first channel with the first communication technology, or to vacate the first channel of the first communication technology, or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via time division multiplex (TDM),
wherein the action is performed based on the determination.

### Claim 25 (depends on 24)

The UE of claim 24, wherein the at least one processor is further configured to:
if the UE determines to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM, transmit a message to one or more other UEs, the message indicating the determination by the UE.

### Claim 26

A user equipment (UE) for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
detect whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel;
perform, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel;
receive one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM; and
relay the one or more messages to another UE.

### Claim 27

A user equipment (UE) for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
detect whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel;
perform, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel;
receive one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM;
relay the one or more message if a relay hop count is less than a relay hop count limit, wherein the one or more message indicates the relay hop count; and
refrain from relaying the one or more message if the relay hop count is greater than or equal to the relay hop count limit.

### Claim 28

A user equipment (UE) for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
detect whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel; and
perform, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel, wherein the at least one processor configured to perform the action is configured to:
determine, based on the detection, whether to stay on a first channel with the first communication technology, or to vacate the first channel of the first communication technology, or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via time division multiplex (TDM), wherein the action is performed based on the determination;
if the UE determines to vacate the first channel of the first communication technology, utilize the second channel with the first communication technology.

### Claim 29

A non-transitory computer-readable medium storing computer executable code, comprising code to:
detect whether a second communication technology different from a first communication technology utilized by the UE is active on a first channel, wherein the code to detect whether the second communication technology is active on the first channel comprises code to:
monitor the first channel for one or more messages indicating that at least one another UE has determined to vacate the first channel of the first communication technology or to stay on the first channel with the first communication technology and the second communication technology sharing the first channel via TDM,
wherein the code to detect whether the second communication technology is active on the first channel is based on the one or more messages; and
perform, based on the detection, an action associated with assigning the first communication technology to at least one of the first channel or a second channel.