Method for selecting cell using a 5G user equipment and a 5G UE

Patent metadata

Field	Value
Publication number	US-11979781-B2
Application number	US-202217696155-A
Country	US
Kind code	B2
Filing date	Mar 16, 2022
Priority date	Mar 11, 2021
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

A method for selecting cell using a fifth generation (5G) user equipment (UE) is provided. The method includes detecting an event, when the 5G UE is camped on a serving cell; detecting availability of one or more voice over new radio (VoNR) cells and one or more non-VoNR cells in vicinity of the serving cell in response to detecting the event; based on the event, performing one of (i) selecting a VoNR cell when only one VoNR cell is available, (ii) identifying and selecting a VoNR cell based on a plurality of cell parameters, when a plurality of VoNR cells are available, and (iii) identifying and selecting a non-VoNR cell from the one or more non-VoNR cells, based on the plurality of cell parameters, when one of the one or more non-VoNR cells is available.

First claim

The invention claimed is:

1. A method of a user equipment (UE), the method comprising:
generating, by the UE, a list comprising voice support, a plurality of cell parameters, and cell details of voice over new radio (VoNR) cells and non-VoNR cells, wherein the plurality of cell parameters comprises power-saving features associated with corresponding cells, wherein the power-saving features of the list includes a bandwidth part (BWP) switching feature, a connected mode discontinuous reception (CDRX) feature, and a semi-persistent scheduling (SPS) feature;
storing, by the UE, the list in a memory of the UE;
while the UE is camped on a serving cell, detecting, by the UE, an event among a set of events indicating a requirement for voice services;
in response to detecting the event while being camped on the serving cell, detecting, by the UE, that an availability of one or more VoNR cells and one or more non-VoNR cells in vicinity of the serving cell is based on the list; and
in response to detecting, by the UE, that at least one VoNR cell is available, selecting a VoNR cell based on a priority for selecting the VoNR cell,
wherein the priority is determined based on a number of power-saving features of each of the at least one VoNR cell,
wherein the number of power-saving features of each of the at least one VoNR cell includes the BWP switching feature, the CDRX feature, and the SPS feature, and
wherein the BWP switching feature is utilized for dividing bandwidth of the VoNR cell to use smaller bandwidth, the CDRX feature is utilized for allowing sleep at pre-defined periodic intervals when no downlink data is allocated, and the SPS feature is utilized for using allocated resources periodically.

2. The method of claim 1 , wherein, based on the serving cell having a VoNR support, a plurality of VoNR cells comprises the serving cell and the plurality of VoNR cells in the vicinity of the serving cell.

3. The method of claim 1 ,
wherein the list further comprises a time-based validity associated with each of the one or more VoNR cells and the one or more non-VoNR cells, and
wherein the method further comprises:
in response to the UE camping on a cell, updating an entry in the list associated with the cell from the one or more VoNR cells and the one or more non-VoNR cells based on the time-based validity.

4. The method of claim 1 , wherein one of the VoNR cell or a non-VoNR cell is selected based on at least one of the number of power-saving features, signal power parameters, or a time-based validity associated with one of each of the one or more VoNR cells or each of the one or more non-VoNR cells.

5. The method of claim 1 ,
wherein the UE is in one of an idle mode or a connected mode, and
wherein the method further comprises:
while the UE is in the idle mode, identifying one of the VoNR cell or a non-VoNR cell for cell selection or reselection in response to detecting the event.

6. The method of claim 5 , wherein the method comprises:
while the UE is in the connected mode, detect one of the one or more VoNR cells or the one or more non-VoNR cells from one or more network-configured cells based on the list stored in the UE;
identify and select one of the VoNR cell or the non-VoNR cell from one of the one or more VoNR cells or the one or more non-VoNR cells; and
transmit a measurement report corresponding to the selected one of the VoNR cell or the non-VoNR cell to a network server, for cell mobility, for receiving handover to the selected one of the VoNR cell or the non-VoNR cell from the network server.

7. A user equipment (UE) comprising:
a communication interface;
a memory; and
a processor configured to:
generate a list comprising voice support, a plurality of cell parameters, and cell details of voice over new radio (VoNR) cells and non-VoNR cells, wherein the plurality of cell parameters comprises power-saving features associated with corresponding cells, wherein the power-saving features of the list includes a bandwidth part (BWP) switching feature, a connected mode discontinuous reception (CDRX) feature, and a semi-persistent scheduling (SPS) feature,
store the list in the memory,
while the UE is camped on a serving cell, detect an event among a set of events indicating a requirement for voice services,
in response to detecting the event while being camped on the serving cell, detect that an availability of one or more VoNR cells and one or more non-VoNR cells in vicinity of the serving cell is based on the list, and
in response to detecting, by the UE, that at least one VoNR cell is available, select a VoNR cell based on a priority for selecting the VoNR cell among the at least one VoNR cell,

wherein the priority is determined based on a number of power saving features of each of the at least one VoNR cell,
wherein the number of power-saving features of each of the at least one VoNR cell includes the BWP switching feature, the CDRX feature, and the SPS feature, and
wherein the BWP switching feature is utilized for dividing bandwidth of the VoNR cell to use smaller bandwidth, the CDRX feature is utilized for allowing sleep at pre-defined periodic intervals when no downlink data is allocated, and the SPS feature is utilized for using allocated resources periodically.

8. The UE of claim 7 , wherein, based on the serving cell having VoNR support, a plurality of VoNR cells comprise the serving cell and the plurality of VoNR cells in the vicinity of the serving cell.

9. The UE of claim 7 ,
wherein the list further comprises a time-based validity associated with each of the one or more VoNR cells and the one or more non-VoNR cells, and
wherein the processor is further configured to:
in response to the UE camping on a cell, update an entry in the list associated with the cell from the one or more VoNR cells and the one or more non-VoNR cells based on the time-based validity.

10. The UE of claim 7 , wherein the processor is further configured to:
select one of the VoNR cell or a non-VoNR cell based on at least one of the number of power-saving features, signal power parameters, or a time-based validity associated with one of each of the one or more VoNR cells or each of the one or more non-VoNR cells.

11. The UE of claim 7 ,
wherein the UE is in one of an idle mode or a connected mode, and
wherein the processor is further configured to:
while the UE is in the idle mode, identify one of the VoNR cell or a non-VoNR cell for cell selection or reselection in response to detecting the event.

12. The UE of claim 11 , wherein the processor is further configured to:
while the UE is in the connected mode, detect one of the one or more VoNR cells and the one or more non-VoNR cells from one or more network-configured cells based on the list stored in the memory of the UE,
identify and select one of the VoNR cell or the non-VoNR cell from the one or more VoNR cells and the one or more non-VoNR cells, and
transmit a measurement report corresponding to the selected one of the VoNR cell or the non-VoNR cell to a network server, for cell mobility, for receiving handover to the selected one of the VoNR cell or the non-VoNR cell from the network server.

13. The method of claim 1 ,
wherein the event consists of one of a scrolling through a call history of the UE, an opening of a contact list and searching for a name in the contact list, an unlocking of the UE and viewing missed call notifications, a user receiving an event reminder, or a searching being performed using a browser application, and
wherein the method further comprises:
in response to detecting the event consisting of one of the scrolling through the call histor

Assignees

• Samsung Electronics Co Ltd

Inventors

• Nagarajan Shanthossh
• Agarwal Rishav
• GUHA Shouvik
• Verma Sumit

Classifications

• H04W36/00835

  Determination of neighbour cell lists · CPC title

• H04W36/00224 Primary

  between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] · CPC title

• H04W36/0061 Primary

  of neighbour cell information · CPC title

• H04W36/0083

  Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists · CPC title

• H04W36/30

  by measured or perceived connection quality data · CPC title