# US 11,310,687 B2 · Techniques for UE mobility prediction based radio resource management

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- Number: US 11,310,687 B2
- Document ID: US11310687B2
- Status: Granted
- Kind: B2
- Application number: 16/947,223
- Filed: 2020-07-23
- Published: 2022-01-27
- Granted: 2022-04-19
- Earliest claimed: 2020-07-23
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Rajeev Kumar; Xipeng Zhu; Ozcan Ozturk; Shankar Krishnan; Linhai He; Gavin Bernard Horn
- Web page: https://patentgrep.com/patent/US11310687B2

## CPC

- H04W 24/00: Supervisory, monitoring or testing arrangements
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 8/08: Mobility data transfer
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 36/06: Reselecting a communication resource in the serving access point
- H04W 36/08: Reselecting an access point
- H04W 36/324: {by mobility data, e.g. speed data}
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 88/02: Terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a mobility prediction for the UE. The UE may determine one or more radio resource management (RRM) measurement parameters based at least in part on the mobility prediction. The UE may perform one or more RRM measurements based at least in part on the one or more RRM measurement parameters. Numerous other aspects are provided.

## Claims

### Claim 1

A method of wireless communication performed by a user equipment (UE), comprising:
determining a mobility prediction for the UE;
determining one or more radio resource management (RRM) measurement parameters based at least in part on the mobility prediction; and
performing one or more RRM measurements based at least in part on the one or more RRM measurement parameters.

### Claim 2 (depends on 1)

The method of claim 1, wherein determining the one or more RRM measurement parameters comprises:
determining one or more reduced RRM measurement parameters that are reduced relative to one or more baseline RRM measurement parameters.

### Claim 3 (depends on 2)

The method of claim 2, wherein the one or more reduced RRM measurement parameters comprise at least one of:
a reduced number of RRM measurements relative to a baseline number of RRM measurements included in the one or more baseline RRM measurement parameters,
a reduced RRM measurement time duration relative to a baseline RRM measurement time duration included in the one or more baseline RRM measurement parameters, or
a reduced number of RRM measurement targets relative to a baseline number of RRM measurement targets included in the one or more baseline RRM measurement parameters.

### Claim 4 (depends on 2)

The method of claim 2, wherein the one or more reduced RRM measurement parameters comprise a reduced number of RRM measurement targets relative to a baseline number of RRM measurement targets included in the one or more baseline RRM measurement parameters; and
wherein determining the one or more reduced RRM measurement parameters comprises:
determining the reduced number of RRM measurement targets based at least in part on at least one of:
the mobility prediction indicating that a probability that the UE will travel into one or more neighboring cells does not satisfy a first threshold,
a signal measurement for a serving cell of the UE satisfying a second threshold, or
a priority of the serving cell being greater than respective priorities of each of the one or more neighboring cells.

### Claim 5 (depends on 1)

The method of claim 1, wherein the UE is in a radio resource control (RRC) connected mode with a base station (BS); and
the method further comprises:
transmitting, to the BS, an indication of the mobility prediction.

### Claim 6 (depends on 5)

The method of claim 5, wherein transmitting the indication of the mobility prediction comprises:
transmitting the indication of the mobility prediction in at least one of:
a UE assistance information communication,
a measurement report,
an RRC reconfiguration complete communication, or
an RRC communication.

### Claim 7 (depends on 5)

The method of claim 5, wherein the mobility prediction indicates at least one of:
a neighboring cell,
a probability that the UE will move into the neighboring cell,
a confidence level of the probability,
an expected arrival time in the neighboring cell,
a route identifier, or
a probability that the UE will use a route associated with the route identifier.

### Claim 8 (depends on 5)

The method of claim 5, further comprising:
receiving, from the BS, an indication of a plurality of RRM measurement objects; and
wherein determining the one or more RRM measurement parameters comprises:
determining an RRM measurement object, from the plurality of RRM measurement objects, based at least in part on the mobility prediction; and
determining the one or more RRM measurement parameters based at least in part on the RRM measurement object.

### Claim 9 (depends on 5)

The method of claim 5, further comprising:
receiving, from the BS, an indication of an RRM measurement parameter range; and
wherein determining the one or more RRM measurement parameters comprises:
determining the one or more RRM measurement parameters based at least in part on the mobility prediction and the RRM measurement parameter range.

### Claim 10 (depends on 1)

The method of claim 1, wherein the UE is in a radio resource control (RRC) idle mode or an RRC inactive mode; and
wherein determining the one or more RRM measurement parameters comprises:
determining that the mobility prediction satisfies an RRM measurement reduction parameter; and
determining the one or more RRM measurement parameters based at least in part on a determination that that mobility prediction satisfies the RRM measurement reduction parameter.

### Claim 11 (depends on 10)

The method of claim 10, further comprising:
receiving, in an RRC release communication, at least one of:
an indication that RRM measurement reduction is permitted for the UE,
an indication of the RRM measurement reduction parameter, or
an indication to perform one or more early measurements.

### Claim 12 (depends on 11)

The method of claim 11, wherein RRM measurement reduction is indicated as being permitted on at least one of a per-carrier basis or a per-cell basis.

### Claim 13 (depends on 1)

The method of claim 1, wherein the UE is in a radio resource control (RRC) idle mode or an RRC inactive mode; and
wherein determining the one or more RRM measurement parameters comprises:
determining that the mobility prediction does not satisfy an RRM measurement reduction parameter; and
determining the one or more RRM measurement parameters based at least in part on a determination that that mobility prediction does not satisfy the RRM measurement reduction parameter.

### Claim 14 (depends on 13)

The method of claim 13, wherein the one or more RRM measurement parameters include one or more intra-frequency cell reselection parameters; and
wherein determining the one or more RRM measurement parameters comprises:
determining the one or more intra-frequency cell reselection parameters based at least in part on at least one of:
the mobility prediction,
historical UE mobility information, or
one or more measurement reports associated with at least one of the UE or one or more other UEs.

### Claim 15 (depends on 13)

The method of claim 13, wherein the one or more RRM measurement parameters include an inter-frequency cell reselection measurement prioritization for a plurality of neighboring cells; and
wherein determining the one or more RRM measurement parameters comprises:
determining a UE-based inter-frequency cell reselection measurement prioritization based at least in part on the mobility prediction; and
determining the inter-frequency cell reselection measurement prioritization based at least in part on at least one of:
the UE-based inter-frequency cell reselection measurement prioritization,
a network-based inter-frequency cell reselection measurement prioritization, or
a tradeoff parameter.

### Claim 16 (depends on 15)

The method of claim 15, further comprising:
receiving an indication of the network-based inter-frequency cell reselection measurement prioritization and an indication of the tradeoff parameter in at least one of:
system information, or
an RRC connection release communication.

### Claim 17 (depends on 13)

The method of claim 13, wherein the one or more RRM measurement parameters include an inter-radio access technology (RAT) target measurement prioritization for a plurality of neighboring RATs; and
wherein determining the one or more RRM measurement parameters comprises:
determining a UE-based inter-RAT target measurement prioritization based at least in part on the mobility prediction; and
determining the inter-RAT target measurement prioritization based at least in part on at least one of:
the UE-based inter-RAT target measurement prioritization,
a network-based inter-RAT target measurement prioritization, or
a tradeoff parameter.

### Claim 18 (depends on 17)

The method of claim 17, further comprising:
receiving an indication of the network-based inter-RAT target measurement prioritization and an indication of the tradeoff parameter in at least one of:
system information, or
an RRC connection release communication.

### Claim 19

A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:
determine a mobility prediction for the UE;
determine one or more radio resource management (RRM) measurement parameters based at least in part on the mobility prediction; and
perform one or more RRM measurements based at least in part on the one or more RRM measurement parameters.

### Claim 20 (depends on 19)

The UE of claim 19, wherein the one or more processors, when determining the one or more RRM measurement parameters, are configured to:
determine one or more reduced RRM measurement parameters that are reduced relative to one or more baseline RRM measurement parameters.

### Claim 21 (depends on 20)

The UE of claim 20, wherein the one or more reduced RRM measurement parameters comprise at least one of:
a reduced number of RRM measurements relative to a baseline number of RRM measurements included in the one or more baseline RRM measurement parameters,
a reduced RRM measurement time duration relative to a baseline RRM measurement time duration included in the one or more baseline RRM measurement parameters, or
a reduced number of RRM measurement targets relative to a baseline number of RRM measurement targets included in the one or more baseline RRM measurement parameters.

### Claim 22 (depends on 20)

The UE of claim 20, wherein the one or more reduced RRM measurement parameters comprise a reduced number of RRM measurement targets relative to a baseline number of RRM measurement targets included in the one or more baseline RRM measurement parameters; and
wherein the one or more processors, when determining the one or more reduced RRM measurement parameters, are configured to:
determine the reduced number of RRM measurement targets based at least in part on at least one of:
the mobility prediction indicating that a probability that the UE will travel into one or more neighboring cells does not satisfy a first threshold,
a signal measurement for a serving cell of the UE satisfying a second threshold, or
a priority of the serving cell being greater than respective priorities of each of the one or more neighboring cells.

### Claim 23 (depends on 19)

The UE of claim 19, wherein the UE is in a radio resource control (RRC) connected mode with a base station (BS); and
the one or more processors are further configured to:
transmit, to the BS, an indication of the mobility prediction.

### Claim 24 (depends on 19)

The UE of claim 19, wherein the mobility prediction indicates at least one of:
a neighboring cell,
a probability that the UE will move into the neighboring cell,
a confidence level of the probability,
an expected arrival time in the neighboring cell,
a route identifier, or
a probability that the UE will use a route associated with the route identifier.

### Claim 25 (depends on 19)

The UE of claim 19, wherein the UE is in a radio resource control (RRC) idle mode or an RRC inactive mode; and
wherein the one or more processors, when determining the one or more RRM measurement parameters, are configured to:
determine that the mobility prediction satisfies an RRM measurement reduction parameter; and
determine the one or more RRM measurement parameters based at least in part on a determination that that mobility prediction satisfies the RRM measurement reduction parameter.

### Claim 26 (depends on 19)

The UE of claim 19, wherein the UE is in a radio resource control (RRC) idle mode or an RRC inactive mode; and
wherein the one or more processors, when determining the one or more RRM measurement parameters, are configured to:
determine that the mobility prediction does not satisfy an RRM measurement reduction parameter; and
determine the one or more RRM measurement parameters based at least in part on a determination that that mobility prediction does not satisfy the RRM measurement reduction parameter.

### Claim 27

A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
determine a mobility prediction for the UE;
determine one or more radio resource management (RRM) measurement parameters based at least in part on the mobility prediction; and
perform one or more RRM measurements based at least in part on the one or more RRM measurement parameters.

### Claim 28 (depends on 27)

The non-transitory computer-readable medium of claim 27, wherein the UE is in a radio resource control (RRC) idle mode or an RRC inactive mode; and
wherein the one or more instructions, that cause the UE to determine the one or more RRM measurement parameters, cause the UE to:
determine that the mobility prediction satisfies an RRM measurement reduction parameter; and
determine the one or more RRM measurement parameters based at least in part on a determination that that mobility prediction satisfies the RRM measurement reduction parameter.

### Claim 29

An apparatus for wireless communication, comprising:
means for determining a mobility prediction for the apparatus;
means for determining one or more radio resource management (RRM) measurement parameters based at least in part on the mobility prediction; and
means for performing one or more RRM measurements based at least in part on the one or more RRM measurement parameters.

### Claim 30 (depends on 29)

The apparatus of claim 29, wherein the means for determining the one or more RRM measurement parameters comprises:
means for determining one or more reduced RRM measurement parameters that are reduced relative to one or more baseline RRM measurement parameters,
wherein the one or more reduced RRM measurement parameters comprise at least one of:
a reduced number of RRM measurements relative to a baseline number of RRM measurements included in the one or more baseline RRM measurement parameters,
a reduced RRM measurement time duration relative to a baseline RRM measurement time duration included in the one or more baseline RRM measurement parameters, or
a reduced number of RRM measurement targets relative to a baseline number of RRM measurement targets included in the one or more baseline RRM measurement parameters.