# US 11,910,354 B2 · Paging area update

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- Number: US 11,910,354 B2
- Document ID: US11910354B2
- Status: Granted
- Kind: B2
- Application number: 17/799,723
- Filed: 2021-03-02
- Published: 2023-03-16
- Granted: 2024-02-20
- Earliest claimed: 2020-03-02
- Assignees: Sony Group Corporation
- Applicants: Sony Group Corporation
- Inventors: Torgny Palenius; Johan Hill
- Web page: https://patentgrep.com/patent/US11910354B2

## CPC

- H04W 68/00: User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04B 17/328: {Reference signal received power [RSRP]; Reference signal received quality [RSRQ]}
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

According to various examples, a method for operating a wireless communication device (200) connectable to a cellular network (50) comprising a plurality of cells (300-340) is provided. The method comprises receiving (701), from the cellular network (50), configuration information for delaying a transmission of a paging area update request that triggers a paging area update of a paging area of a paging operation of the wireless communication device (200). Furthermore the method comprises, when operating in a disconnected mode associated with the paging operation, determining (703) that the paging area update is required, and upon determining (703) that the paging area update is required, delaying (708) the transmission of the paging area update request in accordance with the configuration information.

## Claims

### Claim 1

A method for operating a wireless communication device connectable to a cellular network comprising a plurality of cells, the method comprising:
receiving, from the cellular network, configuration information for delaying a transmission of a paging area update request that triggers a paging area update of a paging area of a paging operation of the wireless communication device,
when operating in a disconnected mode associated with the paging operation, determining that the paging area update is required, and
upon determining that the paging area update is required, delaying the transmission of the paging area update request in accordance with the configuration information.

### Claim 2 (depends on 1)

The method of claim 1, wherein the configuration information is indicative of a paging discard timer associated with a length of a paging escalation sequence of the paging operation.

### Claim 3 (depends on 2)

The method of claim 2, wherein the transmission of the paging area update request is delayed at most until expiry of the paging discard timer.

### Claim 4 (depends on 1)

The method of claim 1, wherein the configuration information is indicative of whether a current paging area in which the wireless communication device is currently located overlaps a neighboring paging area adjacent to the current paging area.

### Claim 5 (depends on 4)

The method of claim 4, wherein the transmission of the paging area update request is selectively delayed if the configuration information indicates that the current paging area overlaps the neighboring paging area.

### Claim 6 (depends on 4)

The method of claim 4, wherein the configuration information is indicative of a cell which is not defined to belong to the current paging area and in which paging signals for the wireless communication device are transmitted.

### Claim 7 (depends on 1)

The method of claim 1, further comprising:
measuring a received power of a downlink reference signal,
wherein the transmission of the paging area update request is delayed until the received power fulfills a power condition.

### Claim 8 (depends on 7)

The method of claim 7, wherein the received power is repeatedly measured while delaying the transmission of the paging area update request.

### Claim 9 (depends on 8)

The method of claim 8, further comprising:
determining a repetition rate of said repeated measuring of the received power based on at least one of a paging discard timer associated with a length of a paging escalation sequence of the paging operation, or a mobility level of the wireless communication device.

### Claim 10 (depends on 7)

The method of claim 7, wherein the configuration information is indicative of the power condition.

### Claim 11 (depends on 7)

The method of claim 7, further comprising:
determining a repetition level of the transmission of the paging area update request based on the received power of the reference signal.

### Claim 12 (depends on 1)

The method of claim 1, wherein the configuration information is indicative of whether said delaying of the transmission of the paging area update request message is allowed.

### Claim 13 (depends on 1)

The method of claim 1, wherein the method comprises:
entering a sleep state while delaying the transmission of the paging area update request.

### Claim 14 (depends on 1)

The method of claim 1, wherein the configuration information is at least partly received when operating in a connected mode, prior to a transition to the disconnected mode.

### Claim 15 (depends on 14)

The method of claim 14, wherein the configuration information is at least partly included in a connection deactivation message triggering the transition to the disconnected mode.

### Claim 16 (depends on 1)

The method of claim 1, wherein the configuration information is at least partly included in a broadcasted system information block.

### Claim 17

A method of operating a node of a cellular network comprising a plurality of cells, the method comprising:
transmitting, to a wireless communication device, configuration information for delaying a transmission of a paging area update request upon the wireless communication device determining that a paging area update is required, wherein the paging area update request triggers the paging area update of a paging area of a paging operation of the wireless communication device,
when the wireless communication device operates in a disconnected mode associated with the paging operation, performing the paging operation in accordance with the configuration information.

### Claim 18 (depends on 17)

The method of claim 17, wherein the configuration information is indicative of a paging discard timer associated with a length of a paging escalation sequence of the paging operation.

### Claim 19 (depends on 17)

The method of claim 17, wherein the configuration information is indicative of whether a current paging area in which the wireless communication device is currently located overlaps a neighboring paging area adjacent to the current paging area.

### Claim 20

A wireless communication device connectable to a cellular network comprising a plurality of cells, the wireless communication device comprising control circuitry configured to
receive, from the cellular network, configuration information for delaying a transmission of a paging area update request that triggers a paging area update of a paging area of a paging operation of the wireless communication device,
determine that the paging area update is required, when operating in a disconnected mode associated with the paging operation, and
delay the transmission of the paging area update request in accordance with the configuration information upon determining that the paging area update is required.
