# US 12,010,060 B2 · Method and apparatus for performing sounding reference signal transmission in RRC_INACTIVE for positioning in mobile wireless communication system

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- Number: US 12,010,060 B2
- Document ID: US12010060B2
- Status: Granted
- Kind: B2
- Application number: 18/230,175
- Filed: 2023-08-04
- Published: 2023-11-23
- Granted: 2024-06-11
- Earliest claimed: 2021-10-05
- Assignees: Blackpin Inc.; Soenghun Kim
- Applicants: Blackpin Inc.; Soenghun Kim
- Inventors: Soenghun Kim
- Web page: https://patentgrep.com/patent/US12010060B2

## CPC

- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management
- H04W 68/00: User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W 68/02: Arrangements for increasing efficiency of notification or paging channel
- H04W 72/04: Wireless resource allocation
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/30: Connection release
- H04W 88/02: Terminal devices
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method and apparatus for positioning in a mobile communication system are provided. Method for positioning includes transmitting to a base station a UECapabilityInformation including one or more first capability information related to SRS, transmitting to a LMF a provideCapabilities including one or more second capability information related to support of SRS in RRC_INACTIVE, receiving from the base station a RRCRelease including a first information and a second information and optionally a fourth information, transmitting in a first cell based on the first information and the second information the fourth information a positioning SRS in RRC_INACTIVE and stopping in the first cell the positioning SRS if a paging message including a third information is received.

## Claims

### Claim 1

A method by a terminal, the method comprising:
transmitting, by the terminal to a base station, a UECapabilityInformation, the UECapabilityInformation includes one or more first capability information related to Sounding Reference Signal (SRS), at most one first capability information can be included per feature set;
transmitting, by the terminal to a Location Management Function (LMF), a provideCapabilities, the provideCapabilities includes one or more second capability information related to support of SRS in RRC_INACTIVE, at most one second capability information can be included per frequency band;
receiving, by the terminal from the base station, a RRCRelease, the RRCRelease includes a first information and a second information and optionally a fourth information, the first information includes configuration of Sounding Reference Signal (SRS) in RRC_INACTIVE and the second information includes information related to Bandwidth Part (BWP) and the fourth information includes information related to supplementary uplink;
transmitting, by the terminal in a first cell to the base station based on the first information and the second information and the fourth information, a positioning SRS in RRC_INACTIVE; and
stopping, by the terminal in the first cell, the positioning SRS when a paging message including a third information is received,
wherein the third information includes a first terminal identifier,
wherein the positioning SRS is transmitted in a normal uplink when the fourth information is not included in the RRCRelease.

### Claim 2 (depends on 1)

The method of claim 1,
wherein the first terminal identifier is received in the RRCRelease.

### Claim 3 (depends on 1)

The method of claim 1,
wherein the terminal initiates resume procedure after the terminal received the paging message.

### Claim 4

A terminal in a wireless communication system, the terminal comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to control the transceiver to:
transmit to a Location Management Function (LMF) a provideCapabilities, the provideCapabilities includes one or more second capability information related to support of SRS in RRC_INACTIVE, at most one second capability information can be included per frequency band;
receive from a base station a RRCRelease, the RRCRelease includes a first information and a second information and optionally a fourth information, the first information includes configuration of Sounding Reference Signal (SRS) in RRC_INACTIVE and the second information includes information related to Bandwidth Part (BWP) and the fourth information includes information related to supplementary uplink;
transmit in a first cell to the base station based on the first information and the second information the fourth information a positioning SRS in RRC_INACTIVE; and
stop in the first cell the positioning SRS when a paging message including a third information is received,
wherein the third information includes a first terminal identifier, and
wherein the positioning SRS is transmitted in a normal uplink when the fourth information is not included in the RRCRelease.