Cell reselection method and device based on network slice information
View Patent ↗The present disclosure provides cell reselection method, including: a terminal device receivers network slice information supported by a neighboring cell, the network slice information comprising single network slice selection assistance information (S-NSSAI) or an S-NSSAI set; and the terminal device perform cell reselection based on the network slice information. The present disclosure also provides another cell reselection method, an electronic device and a storage medium.
1. A cell reselection method, comprising:
receiving, by a terminal device, network slice information supported by a neighboring cell, the network slice information comprising single network slice selection assistance information (S-NSSAI) or an S-NSSAI set; and
performing, by the terminal device, cell reselection based on the network slice information,
wherein when the network slice information comprises the S-NSSAI, the performing, by the terminal device, cell reselection based on the network slice information comprises: performing, by the terminal device, cell reselection based on the S-NSSAI supported by the neighboring cell, the S-NSSAI supported by the terminal device, and a rangeToBestCell parameter; or
wherein when the network slice information comprises the S-NSSAI set, the performing, by the terminal device, cell reselection based on the network slice information comprises: performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, and a rangeToBestCell parameter.
2. The method according to claim 1 , wherein when the network slice information comprises the S-NSSAI, the performing, by the terminal device, cell reselection based on the network slice information comprises:
performing, by the terminal device, cell reselection based on the S-NSSAI supported by the neighboring cell and the S-NSSAI supported by the terminal device.
3. The method according to claim 2 , wherein the performing, by the terminal device, cell reselection based on the S-NSSAI supported by the neighboring cell and the S-NSSAI supported by the terminal device comprises:
in a case where at least two neighboring cells satisfy a first reselection criterion, determining, by the terminal device, the neighboring cell with a largest number of S-NSSAI supported by the terminal device among the S-NSSAI supported by the at least two neighboring cells as a candidate cell for cell reselection.
4. The method according to claim 3 , wherein the first reselection criterion comprises:
a value of a reference signal reception parameter of the neighboring cell being greater than a first threshold; or
the value of the reference signal reception parameter of a serving cell being smaller than a second threshold, and the value of the reference signal reception parameter of the neighboring cell being greater than a third threshold.
5. The method according to claim 4 , wherein the cell reference signal reception parameter comprises:
reference signal received power (RSRP) of the cell and/or reference signal received quality (RSRQ) of the cell.
6. The method according to claim 3 , wherein:
when more than one candidate cells are determined, a cell with largest cell reference signal reception parameter among the candidate cells is determined by the terminal device as a target cell for cell reselection; or
when one candidate cell is determined, the candidate cell is the target cell for cell reselection.
7. The method according to claim 1 , wherein when the network slice information comprises the S-NSSAI set, the performing, by the terminal device, cell reselection based on the network slice information comprises:
performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell and the S-NSSAI supported by the terminal device.
8. The method according to claim 7 , wherein the performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell and the S-NSSAI supported by the terminal device comprises:
in a case where at least two neighboring cells satisfy a first reselection criterion, determining, by the terminal device, the neighboring cell having the S-NSSAI set with a largest number of S-NSSAI supported by the terminal device among the S-NSSAI sets supported by the at least two neighboring cells as a candidate cell for cell reselection.
9. The method according to claim 7 , wherein the S-NSSAI set comprises the S-NSSAI supported by the neighboring cells at a same time and/or in a same network connection.
10. The method according to claim 1 , further comprising:
receiving, by the terminal device, a first parameter, wherein the first parameter is used to represent a quantity range of intersections between the S-NSSAI supported by the terminal device and the S-NSSAI supported by the neighboring cell for cell reselection.
11. The method according to claim 10 , wherein when the network slice information comprises the S-NSSAI, the performing, by the terminal device, cell reselection based on the network slice information comprises:
performing, by the terminal device, cell reselection based on the S-NSSAI supported by the neighboring cell, the S-NSSAI supported by the terminal device, and the first parameter.
12. The method according to claim 11 , wherein the performing, by the terminal device, cell reselection based on the S-NSSAI supported by the neighboring cell, the S-NSSAI supported by the terminal device, and the first parameter comprises:
in a case where at least two neighboring cells satisfy a second reselection criterion, determining, by the terminal device, a first neighboring cell with a largest number of S-NSSAI supported by the terminal device among the S-NSSAI supported by the at least two neighboring cells; and
determining, by the terminal device, a pending neighboring cell having a difference between a first number of S-NSSAI and a second number of S-NSSAI smaller than the first parameter as a candidate cell for cell reselection, wherein the first number of S-NSSAI is a number of S-NSSAI supported by the terminal device among the S-NSSAI supported by the first neighboring cell, and the second number of S-NSSAI is a number of S-NSSAI supported by the terminal device among the S-NSSAI supported by the pending neighboring cell.
13. The method according to claim 1 , wherein the performing, by the terminal device, cell reselection based on the network slice information further comprises:
performing, by the terminal device, cell reselection based on the S-NSSAI supported by the neighboring cell, the S-NSSAI supported by the terminal device, a first parameter, and the rangeToBestCell parameter,
wherein the first parameter is used to represent a quantity range of intersections between the S-NSSAI supported by the terminal device and the S-NSSAI supported by a target neighboring cell for cell reselection.
14. The method according to claim 1 , wherein the performing, by the terminal device, cell reselection based on the network slice information further comprises:
performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, a first parameter, and the rangeToBestCell parameter,
wherein the first parameter is used to represent a quantity range of intersections between the S-NSSAI supported by the terminal device and the S-NSSAI supported by a target neighboring cell for cell reselection.
15. The method according to claim 14 , wherein the performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, the first parameter, and the rangeToBestCell parameter comprises:
in a case where at least two neighboring cells satisfy a second reselection criterion, determining, by the terminal device, a tenth neighboring cell having the S-NSSAI set with a largest number of S-NSSAI supported by the terminal device among the S-NSSAI sets supported by the at least two neighboring cells; and
determining an eleventh neighboring cell from the at least two neighboring cells according to the first parameter and the tenth neighboring cell.
16. The method according to claim 14 , wherein the performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, the first parameter, and the rangeToBestCell parameter comprises:
in a case where at least two neighboring cells satisfy a second reselection criterion, determining, by the terminal device, a twelfth neighboring cell according to the rangeToBestCell parameter; and
determining, by the terminal device from the twelfth neighboring cell, a thirteenth neighboring cell having the S-NSSAI set with a largest number of S-NSSAI supported by the terminal device among the S-NSSAI set supported by the neighboring cells.
17. The method according to claim 14 , wherein the performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, the first parameter, and the rangeToBestCell parameter comprises:
in a case where at least two neighboring cells satisfy a second reselection criterion, determining, by the terminal device, a fourteenth neighboring cell having the S-NSSAI set with a largest number of S-NSSAI supported by the terminal device among the S-NSSAI set supported by the at least two neighboring cells;
determining a fifteenth neighboring cell from the at least two neighboring cells according to the first parameter and the fourteenth neighboring cell;
determining a sixteenth neighboring cell from the at least two neighboring cells according to the rangeToBestCell parameter; and
determining a cell corresponding to an intersection of the fifteenth neighboring cell and the sixteenth neighboring cell as a candidate cell for cell reselection.
18. A terminal device, comprising a processor and a memory for storing a computer program executable on the processor, wherein,
the processor is configured, when executing the computer program, to:
receive network slice information supported by a neighboring cell, the network slice information comprising single network slice selection assistance information (S-NSSAI) or an S-NSSAI set; and
perform cell reselection based on the network slice information,
wherein when the network slice information comprises the S-NSSAI, the processor is further configured to: perform cell reselection based on the S-NSSAI supported by the neighboring cell, the S-NSSAI supported by the terminal device, and a rangeToBestCell parameter; or
wherein when the network slice information comprises the S-NSSAI set, the processor is further configured to: perform cell reselection based on the network slice information comprises: performing, by the terminal device, cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, and a rangeToBestCell parameter.
19. A network device, comprising a processor and a memory for storing a computer program executable on the processor, wherein,
the processor is configured, when executing the computer program, to:
transmit to a terminal device network slice information supported by a neighboring cell;
wherein the network slice information comprises single network slice selection assistance information (S-NSSAI) or an S-NSSAI set, and the network slice information is used for the terminal device for cell reselection,
wherein when the network slice information comprises the S-NSSAI, the network slice information is used for the terminal device for performing cell reselection based on the S-NSSAI supported by the neighboring cell, the S-NSSAI supported by the terminal device, and a rangeToBestCell parameter; or
when the when the network slice information comprises the S-NSSAI set, the network slice information is used for the terminal device for performing cell reselection based on the S-NSSAI set supported by the neighboring cell, the S-NSSAI supported by the terminal device, and a rangeToBestCell parameter.