# US 2021/0345294 A1 · Enhancement for paging indication and radio resource management (rrm) measurements for ue power saving in a wireless network

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- Number: US 2021/0345294 A1
- Document ID: US20210345294A1
- Status: Published application
- Kind: A1
- Application number: 17/378,102
- Filed: 2021-07-16
- Published: 2021-11-04
- Earliest claimed: 2019-02-15
- Assignees: Mediatek Inc.
- Applicants: MediaTek Inc.
- Inventors: Chi-Hsuan Hsieh; Wei-De Wu; Yung-Hsiang Liu
- Web page: https://patentgrep.com/patent/US20210345294A1

## CPC

- H04W 68/02: Arrangements for increasing efficiency of notification or paging channel
- H04B 17/336: Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 56/001: {Synchronization between nodes}
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W 48/16: Discovering, processing access restriction or access information
- 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

A User Equipment (UE) de-multiplexes a paging indication, which precedes a Synchronization Signal Block (SSB) in time and is generated using the same sequence generation formula as that for generating a Secondary Synchronization Signal (SSS) in the SSB. From the de-multiplexed paging indication, the UE detects that it is paged for message reception and wakes up to receive the message in a next data reception period of the UE's DRX cycle.

## Claims

### Claim 1

A method performed by a user equipment (UE) in a wireless network, comprising:
de-multiplexing a paging indication broadcast from a base station to a primary cell of the UE, wherein the paging indication precedes a Synchronization Signal Block (SSB) in time and is generated using a same sequence generation formula as that for generating a Secondary Synchronization Signal (SSS) in the SSB;
detecting from the de-multiplexed paging indication that the UE is paged for reception of a message; and
in response to the detecting, waking up from a sleep state to receive the message from the base station in a next data reception period of a Discontinuous Reception (DRX) cycle of the UE.

### Claim 2 (depends on 1)

The method of claim 1, wherein the paging indication is multiplexed by code-division multiplexing a plurality of SSS blocks, each SSS block coded with a paging group identifier.

### Claim 3 (depends on 2)

The method of claim 2, wherein de-multiplexing the paging indication further comprises:
multiplying the paging group identifier of the UE with the paging indication preceding the SSB.

### Claim 4 (depends on 1)

The method of claim 1, wherein the paging indication is multiplexed by frequency-division multiplexing a plurality of SSS blocks, each SSS block transmitted in a frequency location that identifies a paging group.

### Claim 5 (depends on 1)

The method of claim 1, wherein the paging indication is multiplexed by time-division multiplexing a plurality of SSS blocks, each SSS block transmitted in a time location that identifies a paging group.

### Claim 6 (depends on 1)

The method of claim 1, wherein the paging indication is broadcast by the base station at a fixed time interval larger than a time interval for SSB burst transmission.

### Claim 7 (depends on 1)

The method of claim 1, wherein the paging indication is broadcast by the base station at a fixed time interval equal to a time interval for SSB burst transmission.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
detecting from the de-multiplexed paging indication that the UE is not paged for message reception;
staying in a sleep state throughout the next data reception period of the Discontinuous Reception (DRX) cycle; and
using the de-multiplexed paging indication for tuning reception of the SSB.

### Claim 9 (depends on 1)

The method of claim 1, wherein the paging indication occupies one symbol time preceding a corresponding SSB.

### Claim 10 (depends on 1)

The method of claim 1, wherein the wireless network is a Fifth Generation New Radio (5G NR) network.