Granted Patent B2

US 12,621,759 · App. 18/014,038 · Granted May 5, 2026

Inventor: Xiaofei Liu (Beijing, CN)

Assignee: Beijing Xiaomi Mobile Software Co., Ltd.

H04W48/20H04W36/08

Abstract

Claims (73)

1 . A cell determination method, performed by a terminal, comprising:

performing at least one of a cell selection or a cell reselection based on slice-related information, wherein the slice-related information is received by an access stratum from a non-access stratum, and the slice-related information comprises a slice priority relation of multiple slices,

wherein performing at least one of the cell selection or the reselection based on the slice-related information comprises:

determining a first frequency priority relation of multiple frequencies related with the multiple slices based on the slice priority relation; and

performing the at least one of the cell selection or the cell reselection based on the first frequency priority relation and a second frequency priority relation received from a base station, comprising:

determining a target frequency priority relation based on the first frequency priority relation and the second frequency priority relation; and

performing the at least one of the cell selection or the cell reselection based on the target frequency priority relation;

wherein determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation comprises:

in a case where the second frequency priority relation is carried in a broadcast message of the base station, determining priorities of frequencies in the first frequency priority relation being higher than priorities of frequencies in the second frequency priority relation;

wherein determining the priorities of the frequencies in the first frequency priority relation being higher than the priorities of the frequencies in the second frequency priority relation comprises:

determining overlap frequencies between the frequencies in the first frequency priority relation and the frequencies in the second frequency priority relation; and

determining priorities of the overlap frequencies based on the first frequency priority relation, and determining the priorities of the overlap frequencies being higher than the priorities of other frequencies in the second frequency priority relation.

2 . The method of claim 1 , wherein the slice-related information comprises at least one of requested network slice selection assistance information or allowed network slice selection assistance information.

3 . The method of claim 2 , wherein at least one of the requested network slice selection assistance information or the allowed network slice selection assistance information is provided to the access stratum by the non-access stratum in a case where the terminal sends an initial non-access stratum message.

4 . The method of claim 2 , wherein at least one of the requested network slice selection assistance information or the allowed network slice selection assistance information is provided to the access stratum by the non-access stratum in a case where the terminal sends a non-access stratum message so as to update registered slices.

5 . The method of claim 1 , wherein the slice-related information comprises pre-configured network slice selection assistance information provided by the non-access stratum to the access stratum when selecting a public land mobile network.

6 . The method of claim 1 , further comprising:

determining a third frequency priority relation of a frequency related with each slice;

wherein determining the first frequency priority relation based on the slice priority relation comprises:

for the frequency related with each slice, determining a priority of the frequency related with a high priority slice being higher than a priority of the frequency related with a low priority slice; and

determining a priority of the frequency related with the slice based on the third frequency priority relation.

7 . The method of claim 6 , further comprising:

in a case of a conflict between the slice priority relation determined based on a policy of the terminal and the slice priority relation determined based on a priority of applications in the terminal indicated by a first non-access stratum message, selecting the slice priority relation determined based on the policy of the terminal or the slice priority relation determined based on the priority of applications in the terminal indicated by the first non-access stratum message based on a second non-access stratum message.

8 . The method of claim 1 , wherein the slice priority relation is determined based on at least one of a policy of the terminal or a priority of applications in the terminal indicated by a first non-access stratum message.

9 . The method of claim 1 , wherein determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation comprises:

in a case where the second frequency priority relation is carried in a first dedicated signaling sent by the base station to the terminal, determining the priorities of the frequencies in the first frequency priority relation being higher than the priorities of the frequencies in the second frequency priority relation.

10 . The method of claim 1 , wherein determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation comprises:

in a case where the second frequency priority relation is carried in a first dedicated signaling sent by the base station to the terminal, determining the priorities of the frequencies in the second frequency priority relation being higher than the priorities of the frequencies in the first frequency priority relation.

11 . The method of claim 1 , wherein determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation comprises:

in a case where the second frequency priority relation is carried in a first dedicated signaling sent by the base station to the terminal, determining the priorities of the frequencies in the first frequency priority relation being higher than the priorities of the frequencies in the second frequency priority relation, or determining the priorities of the frequencies in the second frequency priority relation being higher than the priorities of the frequencies in the first frequency priority relation based on a second dedicated signaling sent by the base station to the terminal.

12 . An electronic device being a terminal, comprising:

a processor; and

a memory for storing instructions executable by the processor;

wherein the processor is configured to:

perform at least one of a cell selection or a cell reselection based on slice-related information,

wherein the slice-related information is received by an access stratum from a non-access stratum, and the slice-related information comprises a slice priority relation of multiple slices, and

the processor is configured to perform at least one of the cell selection or the reselection based on the slice-related information by:

determining a first frequency priority relation of multiple frequencies related with the multiple slices based on the slice priority relation; and

performing at least one of the cell selection or the cell reselection based on the first frequency priority relation and a second frequency priority relation received from a base station, comprising:

determining a target frequency priority relation based on the first frequency priority relation and the second frequency priority relation; and

performing the at least one of the cell selection or the cell reselection based on the target frequency priority relation;

wherein determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation comprises:

in a case where the second frequency priority relation is carried in a broadcast message of the base station, determining priorities of frequencies in the first frequency priority relation being higher than priorities of frequencies in the second frequency priority relation;

wherein determining the priorities of the frequencies in the first frequency priority relation being higher than the priorities of the frequencies in the second frequency priority relation comprises:

determining overlap frequencies between the frequencies in the first frequency priority relation and the frequencies in the second frequency priority relation; and

determining priorities of the overlap frequencies based on the first frequency priority relation, and determining the priorities of the overlap frequencies being higher than the priorities of other frequencies in the second frequency priority relation.

13 . The electronic device of claim 12 , wherein the slice-related information comprises at least one of requested network slice selection assistance information or allowed network slice selection assistance information.

14 . The electronic device of claim 12 , wherein the slice-related information comprises pre-configured network slice selection assistance information provided by the non-access stratum to the access stratum in a case of selecting a public land mobile network.

15 . The electronic device of claim 12 , wherein the processor is further configured to:

determine a third frequency priority relation of a frequency related with each slice; wherein

in determining the first frequency priority relation based on the slice priority relation, the processor is configured to:

for the frequency related with each slice, determine a priority of the frequency related with a high priority slice being higher than a priority of the frequency related with a low priority slice; and

determine a priority of the frequency related with the slice based on the third frequency priority relation.

16 . The electronic device of claim 15 , wherein the processor is further configured to:

in a case of a conflict between the slice priority relation determined based on a policy of the terminal and the slice priority relation determined based on a priority of applications in the terminal indicated by a first non-access stratum message, select the slice priority relation determined based on the policy of the terminal or the slice priority relation determined based on the priority of applications in the terminal indicated by the first non-access stratum message based on a second non-access stratum message.

17 . The electronic device of claim 12 , wherein the slice priority relation is determined based on at least one of a policy of the terminal or a priority of applications in the terminal indicated by a first non-access stratum message.

18 . The electronic device of claim 12 , wherein in determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation, the processor is further configured to:

in a case where the second frequency priority relation is carried in a first dedicated signaling sent by the base station to the terminal, determine the priorities of the frequencies in the first frequency priority relation being higher than the priorities of the frequencies in the second frequency priority relation.

19 . The electronic device of claim 12 , wherein in determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation, the processor is further configured to:

in a case where the second frequency priority relation is carried in a first dedicated signaling sent by the base station to the terminal, determine the priorities of the frequencies in the second frequency priority relation being higher than the priorities of the frequencies in the first frequency priority relation.

20 . A communication system, comprising a terminal and a base station,

wherein the terminal communicates with the base station, and is configured to:

perform at least one of a cell selection or a cell reselection based on slice-related information, wherein the slice-related information is received by an access stratum from a non-access stratum, and the slice-related information comprises a slice priority relation of multiple slices;

wherein the terminal is configured to perform at least one of the cell selection or the reselection based on the slice-related information by:

determining a first frequency priority relation of multiple frequencies related with the multiple slices based on the slice priority relation; and

performing at least one of the cell selection or the cell reselection based on the first frequency priority relation and a second frequency priority relation received from a base station, comprising:

determining a target frequency priority relation based on the first frequency priority relation and the second frequency priority relation; and

performing the at least one of the cell selection or the cell reselection based on the target frequency priority relation;

wherein determining the target frequency priority relation based on the first frequency priority relation and the second frequency priority relation comprises:

in a case where the second frequency priority relation is carried in a broadcast message of the base station, determining priorities of frequencies in the first frequency priority relation being higher than priorities of frequencies in the second frequency priority relation;

wherein determining the priorities of the frequencies in the first frequency priority relation being higher than the priorities of the frequencies in the second frequency priority relation comprises:

determining overlap frequencies between the frequencies in the first frequency priority relation and the frequencies in the second frequency priority relation; and

determining priorities of the overlap frequencies based on the first frequency priority relation, and determining the priorities of the overlap frequencies being higher than the priorities of other frequencies in the second frequency priority relation.

Assignments (1)

Continuity (1)

References Cited (20)