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EP-4738928-A2 - CELL DETERMINING METHOD AND APPARATUS

EP4738928A2EP 4738928 A2EP4738928 A2EP 4738928A2EP-4738928-A2

Abstract

The present disclosure relates to the field of mobile communications. Disclosed are a cell determining method and apparatus, a device, and a storage medium. The method comprises: obtaining a cell by means of searching; if the cell is determined to belong to a third-party network, determining the cell as a target cell, wherein the third-party network is another network other than a subscribed network of a terminal device, and the target cell is used for cell selection or cell reselection by the terminal device. The deployment type of a communication network is expanded. The restriction that a terminal device can only perform communication on the basis of a subscription party network is broken, the manner in which the terminal device performs communication on the basis of the communication network is expanded, and the communication quality of the terminal device for communication is improved.

Inventors

  • FAN, Jiangsheng

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260506
Application Date
20210108

Claims (15)

  1. A cell determining method, characterized in being applied to a terminal device, and the method comprising: performing (302) searching to find a cell; and determining the cell as a target cell in a case where it is determined that the cell belongs to a third-party network; wherein the third-party network is a network other than a subscribed network of the terminal device, and the target cell is used for the terminal device to perform cell selection or cell reselection.
  2. The method according to claim 1, wherein the determining the cell as the target cell in a case where it is determined that the cell belongs to the third-party network comprises: determining (303) the cell as the target cell in a case where it is determined that the cell belongs to the third-party network and satisfies a first access condition.
  3. The method according to claim 2, wherein the first access condition comprises at least one of the following: at least one item in first configuration information broadcast by the cell matches at least one item in second configuration information maintained by the terminal device; or a radio frequency signal of the cell satisfies S criterion, wherein the S criterion is that receiving power of the radio frequency signal is greater than preset power and quality of the radio frequency signal is greater than preset quality; or the cell allows access; or tracking area information associated with a Stand-alone Non-public Network, SNPN, network identity in the first configuration information does not belong to any of access-forbidden tracking area information associated with the terminal device, wherein the access-forbidden tracking area associated with the terminal device is a tracking area associated with a network identity of a SNPN selected by the terminal device or a SNPN registered with by the terminal device or a SNPN equivalent to the SNPN registered with by the terminal device, and the SNPN in the first configuration information is the SNPN selected by the terminal device or the SNPN registered with by the terminal device or the SNPN equivalent to the SNPN registered with by the terminal device.
  4. The method according to claim 3, wherein that at least one item in the first configuration information broadcast by the cell matches at least one item in the second configuration information maintained by the terminal device comprises: at least one SNPN network identity in the first configuration information belongs to a SNPN selected by the terminal device, or a SNPN registered with by the terminal device, or a SNPN equivalent to the SNPN registered with by the terminal device.
  5. The method according to claim 3, wherein the first configuration information or the second configuration information comprises at least one of the following: SNPN configuration information; or access control configuration information; or a temporary network identity; or first indication information indicating whether authentication of the terminal device is allowed to be performed through a third-party network; or first group identity information that allows the authentication of the terminal device to be performed through the third-party network, wherein the first group identity information comprises multiple network identities; or second indication information indicating whether the terminal device is allowed to initiate a request for authentication by the third-party network in a case where at least one item in first configuration information broadcast by the cell does not match at least one item in second configuration information maintained by the terminal device; or third indication information indicating whether the terminal device is allowed to access a cell of a third-party network and obtain subscription information; or second group identity information that allows the terminal device to access the cell of the third-party network and obtain the subscription information, wherein the second group identity information comprises multiple network identities; or fourth indication information indicating whether a Public Land Mobile Network, PLMN, a SNPN, the access control configuration information, a Closed Access Group, CAG, or the temporary network identity allows emergency communication.
  6. The method according to claim 5, wherein granularity of the SNPN configuration information, the access control configuration information and the temporary network identity in the first configuration information is cell granularity; granularity of the first indication information, the first group identity information, the second indication information, the third indication information, the second group identity information, and the fourth indication information is SNPN granularity.
  7. The method according to claim 5, wherein granularity of the SNPN configuration information in the second configuration information is terminal granularity; the granularity of the first indication information, the first group identity information, the second indication information, the third indication information, the second group identity information and the fourth indication information is SNPN granularity.
  8. The method according to any one of claims 3-7, wherein the second configuration information is maintained by a Non-Access Stratum, NAS, of the terminal device.
  9. The method according to claim 1, wherein determining that a type of a network to which the cell found through searching belongs is the third-party network comprises: any network identity included in third configuration information broadcast by the cell does not match any subscribed network identity maintained by the terminal device.
  10. The method according to claim 9, wherein the third configuration information comprises an SNPN network identity.
  11. The method according to claims 9 or 10, wherein the subscribed network identity is maintained by a NAS of the terminal device, or the subscribed network identity is maintained by an Access Stratum, AS, of the terminal device; or the subscribed network identity is configured by a network device, or is obtained by the terminal device through NAS signaling, or is configured by a factory pre-configuration process.
  12. A cell determining method, applied to a network device, and the method comprising: sending first configuration information and/or third configuration information to a terminal device; wherein the first configuration information comprises configuration information corresponding to a third-party network, or comprises configuration information corresponding to a subscribed network and the configuration information corresponding to the third-party network, and the third configuration information comprises the configuration information corresponding to the subscribed network.
  13. The method according to claim 12, wherein the first configuration information comprises at least one of the following: Stand-alone Non-public Network, SNPN, configuration information; or access control configuration information; or a temporary network identity; or first indication information indicating whether authentication of the terminal device is allowed to be performed through a third-party network; or first group identity information that allows authentication of the terminal device to be performed through the third-party network, wherein the group identity information comprises multiple network identities; or second indication information indicating whether the terminal device is allowed to initiate a request for authentication by the third-party network in a case where at least one item in first configuration information broadcast by the cell does not match at least one item in second configuration information maintained by the terminal device; or third indication information indicating whether the terminal device is allowed to access a cell of a third-party network and obtain subscription information; or second group identity information that allows the terminal device to access the cell of the third-party network and obtain the subscription information; or fourth indication information indicating whether a Public Land Mobile Network, PLMN, a SNPN, access control configuration information, a Closed Access Group, CAG, or a temporary network identity allows emergency communication.
  14. A terminal device, comprising: a processor and a memory; wherein the memory is configured to store one or more computer programs, which when executed by the processor, cause the terminal device to perform the method as defined in any one of claims 1 to 11.
  15. A network device, comprising: a processor and a memory; wherein the memory is configured to store one or more computer programs, which when executed by the processor, cause the network device to perform the method as defined in claim 12 or 13.

Description

TECHNICAL FIELD The present disclosure relates to the field of mobile communications, and in particular to a cell determining method and apparatus. BACKGROUND Currently, in the mobile communication field, although a terminal device can perform communication based on a mobile communication network, it is necessary for the terminal device to first subscribe the mobile communication network of an operator of a Subscriber Identity Module (SIM) installed, and store the subscribed network identity corresponding to the subscribed network. If the terminal device finds a cell through searching, it compares the network identity corresponding to the cell found through searching with the subscribed network identity, and if it is determined that the network identity corresponding to the cell matches the subscribed network identity, the terminal device can access the cell and perform communication based on the cell. With this method, the terminal device can only access the cell of the subscribed network and perform communication based on the subscribed network, which has limitations. SUMMARY The invention is set out in the appended set of claims. The embodiments of the present disclosure provide a cell determining method and apparatus which expand deployment types of communication networks, break the limitations that terminal device can only perform communication based on a subscribed party's network, and expand the manner in which the terminal device performs communication based on the communication network, thereby improving the communication effect of the terminal device. The technical solutions are as follows. According to an aspect of the present disclosure, a cell determining method is provided as set out in claim 1. Additional features are set out in claims 2 to 11. According to an aspect of the present disclosure, a cell determining method is provided as set out in claim 12. Additional features are set out in claim 13. According to an aspect of the present disclosure, a terminal device is provided as set out in claim 14. According to an aspect of the present disclosure, a network device is provided is provided as set out in claim 15. Reference is also made in the following to other embodiments corresponding to examples deemed useful to understand the invention, even if they do not fall within the scope of the claims. According to an aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon executable program codes, and the executable program codes are loaded and executed by the processor to implement the cell determining method as described in the above aspects. According to an aspect of the present disclosure, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and the chip, when running on a terminal device or a network device, is configured to implement the cell determining method as described in the above aspects. According to an aspect of the present disclosure, an embodiment of the present disclosure provides a computer program product, and the computer program product, when being executed by a processor of a terminal device or a network device, is configured to implement the cell determining method as described in the above aspects. The technical solutions provided by the embodiments of the present disclosure include at least the following beneficial effects. According to the method and apparatus provided in the embodiments of the present disclosure, when the terminal device determines the cell found through searching belongs to the third-party network, it can determine the cell belonging to the third-party network as a cell used for cell selection or cell reselection, which expands the deployment types of communication networks, breaks the limitations that terminal device can only perform communication based on the subscribed party's network, expands the manner in which the terminal device performs communication based on the communication network, thereby improving the communication quality of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS In order to clearly describe the technical solutions in the embodiments of the present disclosure, the accompanying drawings which are referred to in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description show merely some embodiments of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts. FIG. 1 shows a physical cell structure relationship provided by an exemplary embodiment of the present disclosure;FIG. 2 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure;FIG. 3 shows a flowchart of a cell determining method provided in an exemplary embodiment of the present disclosure;FIG. 4 shows a flowchart of a cell determining method provided in an exemp