CN-122029768-A - Apparatus and method of communication

Abstract

Embodiments of the present disclosure relate to devices and methods of communication. In an aspect, a terminal device in a first mode may determine a set of candidate cells for cell reselection, the set of candidate cells being ordered in descending order based on a metric. The terminal device may then determine a subset of candidate cells from the set of candidate cells, the metric of candidate cells in the subset of candidate cells being within a range from the metric of the highest ranked cell in the set of candidate cells. If a first candidate cell in the subset of candidate cells supports LPWUS monitoring in the first mode, the terminal device may perform the cell reselection to the first candidate cell. In this way, the LPWUS-capable terminal device may camp as much as possible on LPWUS-capable cells.

Inventors

• SHI RAO
• WANG DA
• LIANG LIN
• WANG GANG

Assignees

• 日本电气株式会社

Dates

Publication Date

20260512

Application Date

20230918

Claims (20)

1. 1. A terminal device, the terminal device comprising: A processor configured to cause the terminal device to: Determining a set of candidate cells for cell reselection in a first mode, the set of candidate cells being ordered in descending order based on a metric; Determining a subset of candidate cells from said set of candidate cells, said metrics of candidate cells in said subset of candidate cells being within a range from said metrics of highest ranked cells in said set of candidate cells, and In accordance with a determination that a first candidate cell of the subset of candidate cells supports low-power wake-up signal (LPWUS) monitoring in the first mode, the cell reselection to the first candidate cell is performed.
2. 2. The terminal device of claim 1, wherein the first candidate cell is a highest ranked cell of the subset of candidate cells that supports the LPWUS monitoring in the first mode.
3. 3. A terminal device according to claim 1, wherein the terminal device is further caused to: in accordance with a determination that none of the candidate cells in the subset of candidate cells supports the LPWUS monitoring in the first mode, performing the cell reselection to a second candidate cell in the subset of candidate cells, the second candidate cell having the highest number of beams with the metric above a first metric threshold, or In accordance with a determination that none of the candidate cells in the subset of candidate cells supports the LPWUS monitoring in the first mode, the cell reselection to the highest ranked cell in the set of candidate cells is performed.
4. 4. A terminal device according to claim 1, wherein the terminal device is caused to perform the cell reselection by: Receiving a first indication from the network device indicating whether the first candidate cell is barred for a LPWUS-capable terminal device, and In accordance with a determination that the first indication indicates that the first candidate cell is not barred for the LPWUS enabled terminal device, the cell reselection to the first candidate cell is performed.
5. 5. A terminal device according to claim 4, wherein the terminal device is further caused to: Receiving a second indication from the network device indicating whether the cell reselection to the on-channel cell corresponding to the first candidate cell is allowed for the LPWUS-capable terminal device, and In accordance with a determination that the first indication indicates that the first candidate cell is barred for the LPWUS supported terminal device, the cell reselection is performed based on the second indication.
6. 6. A terminal device according to claim 4, wherein the terminal device is further caused to: In accordance with a determination that the terminal device does not receive a second indication indicating whether the cell reselection to the on-channel cell corresponding to the first candidate cell is allowed for the terminal device supporting LPWUS, performing operations comprising at least one of: the first candidate cell is considered to be barred, or The cell reselection is performed based on determining that the cell reselection to the on-channel cell is allowed.
7. 7. A terminal device, the terminal device comprising: A processor configured to cause the terminal device to: determining a target cell based on criteria for cell reselection in a first mode, and In accordance with a determination that the target cell supports low power wake-up signal (LPWUS) monitoring in the first mode, the cell reselection to the target cell is performed.
8. 8. A terminal device according to claim 7, wherein the terminal device is further caused to: In accordance with a determination that the target cell does not support the LPWUS monitoring in the first mode, operations are performed that include at least one of: in accordance with a determination that the serving cell metric is above a second metric threshold, not performing the cell reselection to the target cell; In accordance with a determination that a criterion for camping on the serving cell is met, not performing the cell reselection to the target cell; In accordance with a determination that the metric for the serving cell is below the second metric threshold, performing the cell reselection to the target cell, or In accordance with a determination that the criteria for camping on the serving cell are not met, the cell reselection to the target cell is performed.
9. 9. A terminal device according to claim 7 or 8, wherein the terminal device is caused to determine the target cell by: determining a set of candidate cells for cell reselection, the set of candidate cells being ordered in descending order based on a metric, and Determining a third candidate cell of the highest ranked cell of the set of candidate cells or a subset of candidate cells of the set of candidate cells as the target cell, the metric of candidate cells of the subset of candidate cells being within a range of the metric from the highest ranked cell of the set of candidate cells, the third candidate cell having a highest number of beams with the metric above a third metric threshold.
10. 10. A terminal device according to claim 7 or 8, wherein the terminal device is caused to determine the target cell by: In accordance with a determination that a candidate cell has a higher frequency priority than a frequency priority of a serving cell and a metric of the candidate cell is above a fourth metric threshold during a time interval, the candidate cell is determined to be the target cell.
11. 11. A terminal device according to claim 7 or 8, wherein the terminal device is caused to determine the target cell by: in accordance with a determination that a metric of a serving cell is below a fifth metric threshold and the metric of a candidate cell having a lower frequency priority than the frequency priority of the serving cell is above a sixth metric threshold during a time interval, the candidate cell is determined to be the target cell.
12. 12. A terminal device according to claim 7 or 8, wherein the terminal device is caused to perform the cell reselection by: Receiving a third indication from the network device indicating whether the target cell is barred for a LPWUS-capable terminal device, and In accordance with a determination that the third indication indicates that the target cell is not barred for the LPWUS supported terminal device, the cell reselection to the target cell is performed.
13. 13. A terminal device according to claim 12, wherein the terminal device is further caused to: Receiving a fourth indication from the network device indicating whether the cell reselection to the on-channel cell corresponding to the target cell is allowed for the LPWUS supported terminal device, and In accordance with a determination that the third indication indicates that the target cell is barred for the LPWUS supported terminal device, the cell reselection is performed based on the fourth indication.
14. 14. A terminal device according to claim 12, wherein the terminal device is further caused to: In accordance with a determination that the terminal device has not received a fourth indication indicating whether the cell reselection to the on-channel cell corresponding to the target cell is allowed for the terminal device supporting LPWUS, performing operations comprising at least one of: the target cell is considered to be barred, or The cell reselection is performed based on determining that the cell reselection to the on-channel cell is allowed.
15. 15. A terminal device, the terminal device comprising: A processor configured to cause the terminal device to: determining candidate cells supporting low power wake-up signal (LPWUS) monitoring in the first mode in the second mode, and In accordance with a determination that the metric of the candidate cell is above a seventh metric threshold during a time interval, cell reselection to the candidate cell is performed.
16. 16. A terminal device according to claim 15, wherein the terminal device is caused to perform the cell reselection by: Receiving a fifth indication from the network device indicating whether the candidate cell is barred for a LPWUS-capable terminal device, and In accordance with a determination that the fifth indication indicates that the candidate cell is not barred for the LPWUS supported terminal device, the cell reselection to the candidate cell is performed.
17. 17. A terminal device according to claim 16, wherein the terminal device is further caused to: Receiving a sixth indication from said network device indicating whether said cell reselection to an on-channel cell corresponding to said candidate cell is allowed for said supported LPWUS terminal device, and In accordance with a determination that the fifth indication indicates that the candidate cell is barred for the LPWUS supported terminal device, the cell reselection is performed based on the sixth indication.
18. 18. A terminal device according to claim 16, wherein the terminal device is further caused to: in accordance with a determination that the terminal device did not receive a sixth indication indicating whether the cell reselection to the on-channel cell corresponding to the candidate cell is allowed for the terminal device supporting LPWUS, performing operations comprising at least one of: the candidate cell is considered to be barred, or The cell reselection is performed based on determining that the cell reselection to the on-channel cell is allowed.
19. 19. A terminal device according to claim 1, 7 or 15, wherein the terminal device is further caused to: Receiving information from a network device indicating whether neighbor cells in a set of neighbor cells support said LPWUS monitoring in said first mode, or Determining from system information of the first candidate cell that the first candidate cell supports the LPWUS monitoring in the first mode.
20. 20. The terminal device of claim 19, wherein the information comprises a list of neighboring cells supporting the LPWUS monitoring in the first mode.

Description

Apparatus and method of communication Technical Field Embodiments of the present disclosure relate generally to the field of telecommunications and, in particular, relate to a method, apparatus, and computer storage medium for communication for mobility in a lower-power wake-up signal (LPWUS) mode. Background Currently, it has been proposed to use the primary radio to describe a conventional communication device that performs a normal radio resource control (RRC, radio resource control) state, and additionally design LPWUS receiver to monitor LPWUS for turning on the primary radio. When the terminal device is not receiving traffic, the terminal device may enter LPWUS mode during which the main radio is turned off and the LPWUS receiver is turned on to monitor LPWUS. Upon receipt LPWUS, the terminal device may turn on the primary radio and turn off LPWUS the receiver. However, mobility in LPWUS mode is not yet clear and requires further development. Disclosure of Invention In general, embodiments of the present disclosure provide methods, apparatus, and computer storage media for communication of mobility in LPWUS modes. In a first aspect, a terminal device is provided. The terminal device includes a processor configured to cause the terminal device to determine a set of candidate cells for cell reselection in a first mode, the set of candidate cells being ordered in descending order based on a metric, determine a subset of candidate cells from the set of candidate cells, the metric of candidate cells in the subset of candidate cells being within a range of the metric of a highest ordered cell in the set of candidate cells, and perform the cell reselection to a first candidate cell in the subset of candidate cells in accordance with a determination that the first candidate cell supports LPWUS monitoring in the first mode. In a second aspect, a terminal device is provided. The terminal device includes a processor configured to cause the terminal device to determine a target cell based on criteria for cell reselection in a first mode and perform cell reselection to the target cell in accordance with a determination that the target cell supports LPWUS monitoring in the first mode. In a third aspect, a terminal device is provided. The terminal device includes a processor configured to cause the terminal device to determine a candidate cell supporting LPWUS monitoring in a first mode in a second mode and perform cell reselection to the candidate cell in accordance with a determination that a metric of the candidate cell is above a seventh metric threshold during a time interval. In a fourth aspect, a communication method is provided. The method comprises determining, at a terminal device in a first mode, a set of candidate cells for cell reselection, the set of candidate cells being ordered in descending order based on a metric, determining a subset of candidate cells from the set of candidate cells, the metric of candidate cells in the subset of candidate cells being within a range of the metric of a highest ordered cell in the set of candidate cells, and performing the cell reselection to a first candidate cell in the subset of candidate cells in accordance with a determination that the first candidate cell supports LPWUS monitoring in the first mode. In a fifth aspect, a communication method is provided. The method includes determining, at a terminal device in a first mode, a target cell based on criteria for cell reselection, and performing cell reselection to the target cell in accordance with a determination that the target cell supports LPWUS monitoring in the first mode. In a sixth aspect, a communication method is provided. The method includes determining, at a terminal device in a second mode, a candidate cell supporting LPWUS monitoring in a first mode, and performing cell reselection to the candidate cell in accordance with determining that a metric of the candidate cell is above a seventh metric threshold during a time interval. In a seventh aspect, a computer readable medium having instructions stored thereon is provided. The instructions, when executed on at least one processor, cause the at least one processor to perform the method according to any one of the fourth to sixth aspects of the present disclosure. Other features of the present disclosure will become apparent from the following description. Drawings The foregoing and other objects, features, and advantages of the disclosure will be apparent from the following more particular description of certain embodiments of the disclosure, as illustrated in the accompanying drawings in which: FIG. 1A illustrates an example communication network in which some embodiments of the present disclosure may be implemented; fig. 1B illustrates an example structure of a terminal device in which some embodiments of the present disclosure may be implemented; FIG. 1C illustrates a diagram of LPWUS mechanisms in which some embodiments of the present disclosure m