# US 10,321,374 B2 · Device and method for handling user equipment configuration

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- Number: US 10,321,374 B2
- Document ID: US10321374B2
- Status: Granted
- Kind: B2
- Application number: 15/908,836
- Filed: 2018-03-01
- Published: 2018-09-06
- Granted: 2019-06-11
- Earliest claimed: 2017-03-01
- Assignees: HTC Corporation
- Applicants: HTC Corporation
- Inventors: Chih-Hsiang Wu
- Web page: https://patentgrep.com/patent/US10321374B2

## CPC

- H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W 4/50: Service provisioning or reconfiguring
- H04W 36/08: Reselecting an access point
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A communication device for handling a temporary UE configuration comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise receiving a configuration from a first base station; communicating with the first BS according to the configuration; transmitting a first message to the first BS to request changing the configuration; performing a handover to a second BS; and transmitting the first message to the second BS to request changing the configuration, when connecting to the second BS in response to the handover.

## Claims

### Claim 1

A communication device for handling user equipment (UE) configuration, comprising:
a storage device; and
a processing circuit, coupled to the storage device, wherein the storage device stores, and the processing circuit is configured to execute instructions of:
receiving a configuration from a first base station (BS);
communicating with the first BS according to the configuration;
transmitting a first message to the first BS to request changing the configuration;
performing a handover to a second BS; and
transmitting the first message to the second BS to request changing the configuration, when connecting to the second BS in response to the handover.

### Claim 2 (depends on 1)

The communication device of claim 1, wherein the instructions further comprise:
receiving a handover command for the handover to the second BS, from the first BS;
determining to transmit the first message to the second BS, when the handover command does not change the configuration; and
determining not to transmit the first message to the second BS, when the handover command changes the configuration.

### Claim 3 (depends on 1)

The communication device of claim 1, wherein the instructions further comprise:
receiving a second message from the first BS or the second BS, when the first BS or the second BS receives the first message, wherein the second message releases, deactivates or reconfigures the configuration.

### Claim 4 (depends on 1)

The communication device of claim 1, wherein the configuration is a carrier aggregation (CA) configuration.

### Claim 5 (depends on 1)

The communication device of claim 1, wherein the configuration is a multi-input-multi-output (MIMO) configuration.

### Claim 6 (depends on 1)

The communication device of claim 1, wherein the communication device transmits the first message, after the communication device successfully reestablishes a radio resource control (RRC) connection to the first BS or the second BS.

### Claim 7

A first base station (BS) for handling user equipment (UE) configuration, comprising:
at least one storage device; and
at least one processing circuit, coupled to the at least one storage device, wherein the at least one storage device stores, and the at least one processing circuit is configured to execute instructions of:
transmitting a configuration to a communication device;
communicating with the communication device according to the configuration;
receiving a first message requesting changing the configuration, from the communication device;
transmitting a Handover Request message to initiate a handover to a second BS, wherein the Handover Request message comprises information indicating that the communication device requests changing the configuration to the second BS when initiating the handover;
receiving a Handover Request Acknowledge message for responding to the Handover Request message from the second BS, wherein the Handover Request Acknowledge message comprises a handover command; and
transmitting the handover command to the communication device.

### Claim 8 (depends on 7)

The first BS of claim 7, wherein the information is the first message.

### Claim 9 (depends on 7)

The first BS of claim 7, wherein the configuration is a carrier aggregation (CA) configuration.

### Claim 10 (depends on 7)

The first BS of claim 7, wherein the configuration is a multi-input-multi-output (MIMO) configuration.

### Claim 11 (depends on 7)

The first BS of claim 7, wherein the handover command configures the communication device to release or modify the configuration.