WO2024037495A1 - 通信方法、系统、核心网网元和用户设备 - Google Patents
通信方法、系统、核心网网元和用户设备 Download PDFInfo
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- WO2024037495A1 WO2024037495A1 PCT/CN2023/112887 CN2023112887W WO2024037495A1 WO 2024037495 A1 WO2024037495 A1 WO 2024037495A1 CN 2023112887 W CN2023112887 W CN 2023112887W WO 2024037495 A1 WO2024037495 A1 WO 2024037495A1
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- indication message
- plmn
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Definitions
- the present disclosure relates to the field of communication technology, and in particular, to a communication method, system, core network element and user equipment (User Equipment, UE).
- UE User Equipment
- the UE selects a PLMN from multiple public land mobile networks (Public Land Mobile Network, PLMN) based on the preset information in the UE's subscriber identity card, and further resides in a certain cell of the PLMN to establish Data Connections.
- PLMN Public Land Mobile Network
- a communication method including: a core network element sending an indication message to a user equipment UE to indicate whether the UE selects a public land mobile network PLMN according to an auxiliary network selection parameter.
- the indication message includes a first indication message, and the first indication message is used to instruct the UE to select a PLMN according to the secondary network selection parameter in the first indication message.
- the core network element sending the indication message to the UE includes: the core network element sending the first indication message to the UE multiple times, wherein for two consecutive first indication messages sent twice, Instruction message, the auxiliary network selection parameter in the previous first indication message is different from the auxiliary network selection parameter in the subsequent first indication message.
- the core network element sending the first indication message to the UE multiple times includes: after sending the previous first indication message, the signal quality and network load of the candidate PLMN are determined.
- the core network element sends the latter first indication message, and the latter first indication message is used to instruct the UE to perform the following operations according to the following first indication message:
- the auxiliary network selection parameters are used to determine whether to select the candidate PLMN.
- the auxiliary network selection parameters include a signal threshold; when the signal quality of the candidate PLMN is less than or equal to the first predetermined quality, or when the network load of the candidate PLMN is greater than or equal to the first predetermined load , the signal threshold in the latter first indication message is greater than the signal threshold in the previous first indication message; when the signal quality of the candidate PLMN is greater than or equal to the second predetermined quality, or in the network of the candidate PLMN When the load is less than or equal to the second predetermined load, the signal threshold in the subsequent first indication message is smaller than the signal threshold in the previous first indication message.
- the indication message includes a second indication message, the second indication message being used to instruct the UE not to select a PLMN according to the secondary network selection parameter.
- the core network element sending the indication message to the UE includes: when the signal quality of the candidate PLMN is greater than or equal to a third predetermined quality, the core network element sends the second indication to the UE. information.
- the core network element sends the indication message to the UE only when the UE is a data-centric UE.
- the method further includes: the core network element receiving a registration request from the UE; the core network element obtaining the user subscription information of the UE; and the core network element according to The user subscription information determines whether the UE is a data-centric UE.
- a communication method including: a UE receiving an indication message from a core network element; and the UE determining, according to the indication message, whether to select a PLMN according to an auxiliary network selection parameter.
- the UE determines whether to select a PLMN according to the auxiliary network selection parameter according to the indication message, including: in the case where the indication message is a first indication message carrying the auxiliary network selection parameter, the The UE determines to select a PLMN according to the auxiliary network selection parameter, and saves the auxiliary network selection parameter.
- the UE saves the secondary network selection parameters to a subscriber identity card in the UE.
- the UE determines whether to select the PLMN according to the auxiliary network selection parameter according to the indication message. In the case where the indication message is a second indication message, the UE determines not to select the PLMN according to the auxiliary network selection parameter. Select Parameters Select PLMN.
- the UE deletes the auxiliary network selection parameter if the indication message is the second indication message and the UE has saved the auxiliary network selection parameter.
- the method further includes: in the case where it is determined to select a PLMN according to the auxiliary network selection parameter, the UE selects a PLMN according to priorities of a plurality of candidate PLMNs and the auxiliary network selection parameter.
- the auxiliary network selection parameters include a signal threshold; the UE selecting a PLMN according to the priorities of multiple candidate PLMNs and the auxiliary network selection parameters includes: the UE determines whether to select the first priority PLMN. A candidate PLMN; when the received signal quality of at least one cell of the first candidate PLMN is greater than or equal to the signal threshold, the UE selects the first candidate PLMN; in each of the first candidate PLMN When the received signal quality of the cell is less than the signal threshold, the UE does not select the first candidate PLMN, and uses the second candidate PLMN of the second priority as the first candidate PLMN to repeat the judgment, Wherein, the level of the second priority is smaller than the level of the first priority, and the second priority and the first priority are the priorities of the plurality of candidate PLMNs in order from high to low. Two adjacent priorities in the case of sequential arrangement.
- the UE is a data-centric UE.
- the core network element is a mobility management function network element.
- the indication message is a non-access stratum message.
- the auxiliary network selection parameters include signal thresholds.
- the signal threshold includes a signal strength threshold.
- a communication method including: sending an indication message to a user equipment UE to indicate whether the UE selects a public land mobile network PLMN according to an auxiliary network selection parameter.
- a core network element including: a sending module configured to send an indication message to a UE to indicate whether the UE selects a PLMN according to an auxiliary network selection parameter.
- a core network element including: a memory; and a processor coupled to the memory, configured to execute any one of the above based on instructions stored in the memory. methods described in the examples.
- a user equipment including: a receiving module configured to receive an indication message from a core network element; and a determining module configured to determine whether to determine whether to The auxiliary network selection parameter selects PLMN.
- a user equipment including: a memory; and a processor coupled to the memory, configured to execute any one of the above embodiments based on instructions stored in the memory. the method described.
- a communication system including: the core network element described in any of the above embodiments; and the user equipment described in any of the above embodiments.
- a computer-readable storage medium including computer program instructions, wherein when the computer program instructions are executed by a processor, the method described in any of the above embodiments is implemented.
- a computer program product including a computer program, wherein when the computer program is executed by a processor, the method described in any of the above embodiments is implemented.
- the core network element sends an indication message to the UE to indicate whether the UE selects a PLMN according to the auxiliary network selection parameter.
- the core network can flexibly control whether the UE selects a PLMN based on the auxiliary network selection parameters according to actual needs. In this way, the success rate of the UE in establishing the data connection can be improved while also improving the efficiency of the UE in establishing the data connection.
- Figure 1 is a schematic flowchart of a communication method according to some embodiments of the present disclosure
- Figure 2 is a schematic flowchart of a communication method according to other embodiments of the present disclosure.
- Figure 3 is a schematic flowchart of a communication method according to further embodiments of the present disclosure.
- Figure 4 is a schematic flowchart of a communication method according to further embodiments of the present disclosure.
- Figure 5 is a schematic structural diagram of a core network element according to some embodiments of the present disclosure.
- Figure 6 is a schematic structural diagram of a UE according to some embodiments of the present disclosure.
- FIG. 7 is a schematic structural diagram of an electronic device according to some embodiments of the present disclosure.
- any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.
- the UE selects a PLMN according to the auxiliary network selection parameters in the preset information except for the priorities of multiple PLMNs, so as to increase the possibility of the UE camping in a cell with better signal quality and improve the success of the UE in establishing a data connection. Rate.
- the efficiency of the UE in establishing a data connection will be reduced. For example, for a PLMN with good signal quality, even if the PLMN is directly selected without selecting parameters based on the auxiliary network, the UE can still camp in a cell with good signal quality and successfully establish a data connection.
- the UE regardless of the signal quality of the PLMN, the UE always selects the PLMN according to the auxiliary network selection parameters, thereby reducing the efficiency of the UE in establishing a data connection.
- Embodiments of the present disclosure provide a communication method.
- the communication method includes: sending an indication message to the UE to indicate whether the UE selects the public land mobile network PLMN according to the auxiliary network selection parameter.
- the communication method may include, but is not limited to, being performed by core network elements.
- An embodiment of a communication method performed by a core network element will be described below with reference to Figure 1 .
- Figure 1 is a flowchart of a communication method according to some embodiments of the present disclosure.
- the communication method includes step 102.
- the core network element sends an indication message to the UE to indicate whether the UE selects a PLMN according to the secondary network selection parameters.
- the auxiliary network parameters may include auxiliary network parameters corresponding to each candidate PLMN. In this case, indicate Whether the UE selects a PLMN based on the secondary network selection parameters, that is, indicates whether the UE determines whether to select the candidate PLMN based on the secondary network parameters corresponding to the candidate PLMN.
- auxiliary network parameters corresponding to different candidate PLMNs may be the same or different.
- the auxiliary network selection parameters include signal thresholds, eg, signal thresholds for received signal quality.
- the signal threshold for received signal quality is greater than the cell selection criterion (Cell Selection Criterion, also known as the S criterion).
- the signal threshold includes a signal strength threshold.
- the auxiliary network parameters may include the signal strength threshold of the received signal strength corresponding to each candidate PLMN.
- the indication message includes a first indication message, and the first indication message is used to instruct the UE to select a PLMN according to the secondary network selection parameter.
- the core network element sends a first indication message to the UE to instruct the UE to determine whether to select the candidate PLMN based on the signal threshold corresponding to the candidate PLMN, thereby improving the success rate of the UE in establishing a data connection.
- the indication message includes a second indication message, and the second indication message is used to instruct the UE not to select a PLMN according to the secondary network selection parameter.
- the core network element sends a second indication message to the UE to instruct the UE not to determine whether to select the candidate PLMN based on the signal threshold corresponding to the candidate PLMN, thereby improving the efficiency of the UE in establishing a data connection.
- the indication message is a Non Access Stratum (NAS) message.
- NAS Non Access Stratum
- the first indication message is a NAS message; for another example, the second indication message is a NAS message.
- the core network element is a mobility management function element.
- the mobility management function network element can be the Mobility Management Entity (MME) in the 4G core network or the Access and Mobility Management Function (AMF) network element in the 5G core network.
- MME Mobility Management Entity
- AMF Access and Mobility Management Function
- mobility management function network element can also be other network elements with similar functions in other core networks (for example, 6G core network, etc.).
- the core network element sends an indication message to the UE to indicate whether the UE selects a PLMN according to the auxiliary network selection parameter.
- the core network can flexibly control whether the UE is based on actual needs.
- the auxiliary network selection parameter selects PLMN. In this way, the success rate of the UE in establishing the data connection can be improved while also improving the efficiency of the UE in establishing the data connection.
- auxiliary network selection parameters are burned into the user identification card when the card is produced, or are sent to the user through the user interface by the Over-the-Air Technology (OTA) platform. identification card.
- OTA Over-the-Air Technology
- the UE can only select a PLMN based on fixed auxiliary network selection parameters, resulting in the failure of the UE to effectively improve the success rate of establishing a data connection.
- the present disclosure also proposes the following embodiments.
- the indication message includes a first indication message, and the first indication message is used to instruct the UE to select a PLMN according to the secondary network selection parameters in the first indication message.
- the first indication message carries the auxiliary network selection parameter, that is, the first indication message carries the value of the signal threshold.
- the core network can adjust the signal threshold value corresponding to the candidate PLMN according to the actual situation such as the current signal quality of the candidate PLMN.
- the core network element may send a first indication message to the UE to instruct the UE to determine whether to select the candidate PLMN based on the signal threshold corresponding to the candidate PLMN, thereby improving the success rate of the UE in establishing a data connection.
- the core network element sends a first indication message to the UE to instruct the UE to select a PLMN according to the secondary network selection parameters in the first indication message.
- the core network can control and send the auxiliary network selection parameters to the UE, so as to flexibly control the UE to select a PLMN based on different auxiliary network selection parameters. In this way, the success rate of the UE establishing a data connection can be further improved.
- the first indication message is used to instruct the UE to set the auxiliary network selection parameters.
- the UE before receiving the first indication message, the UE does not save the secondary network selection parameters, that is, the UE does not select the PLMN according to the secondary network selection parameters. Afterwards, the core network element sends a first indication message to the UE to instruct the UE to save the auxiliary network selection parameters in the first indication message. After saving the auxiliary network selection parameters, the UE can select a PLMN according to the saved auxiliary network selection parameters. In this way, the setting of auxiliary network selection parameters can be achieved.
- the first indication message is used to instruct the UE to update the auxiliary network selection parameter.
- the UE before receiving the first indication message, the UE has saved the secondary network selection parameters, that is, the UE has been able to select the PLMN according to the saved secondary network selection parameters.
- the core network element sends a first indication message to the UE to instruct the UE to update the saved auxiliary network selection parameter to the auxiliary network selection in the first indication message. parameter.
- the UE no longer selects a PLMN based on the previously saved secondary network selection parameters, but selects a PLMN based on the secondary network selection parameters in the first indication message. In this way, the auxiliary network selection parameters can be updated.
- the auxiliary network selection parameters saved by the UE before receiving the first instruction message for update are burned into the user identity card when the card is produced, or are sent to the user identity card by the OTA platform through the user plane. middle.
- the auxiliary network selection parameters saved by the UE before receiving the first indication message for update are sent by the core network element to the UE through another first indication message.
- the core network element sends the first indication message carrying the auxiliary network selection parameter to the UE multiple times.
- the auxiliary network selection parameter in the previous first indication message is different from the auxiliary network selection parameter in the following first indication message.
- the previous first indication message is the first indication message sent previously among the first indication messages sent twice adjacently
- the latter first indication message is the latter one among the first indication messages sent twice adjacently.
- the latter first instruction message is used to instruct the UE to update the auxiliary network selection parameters.
- the previous first indication message is used to instruct the UE to set the auxiliary network selection parameters. In other embodiments, the previous first indication message is also used to instruct the UE to update the auxiliary network selection parameters.
- the core network element sends the first indication message to the UE multiple times, and the auxiliary network selection parameters in the two first indication messages sent twice are different.
- the core network can more flexibly control the UE to select a PLMN based on different auxiliary network selection parameters. In this way, the success rate of the UE establishing a data connection can be further improved.
- the core network element after sending the previous first indication message, if at least one of the signal quality and network load of the candidate PLMN meets the predetermined condition, the core network element sends the next first indication message.
- the latter first indication message is used to instruct the UE to determine whether to select a candidate PLMN according to the auxiliary network selection parameter in the latter first indication message.
- the core network element first sends the previous first indication message to the UE to instruct the UE to determine whether to select a candidate PLMN based on the auxiliary network selection parameter corresponding to the candidate PLMN in the previous first indication message.
- At least one of the signal quality and network load of the candidate PLMN changes at a relatively large scale, until the predetermined conditions are met.
- the core network element sends the next first indication message to the UE to instruct the UE to no longer determine whether to select the candidate PLMN based on the auxiliary network selection parameter corresponding to the candidate PLMN in the previous first indication message, but instead Determine whether to select the candidate PLMN according to the auxiliary network selection parameter corresponding to the candidate PLMN in the subsequent first indication message.
- the core network element when at least one of the signal quality and network load of the candidate PLMN satisfies the predetermined condition, the core network element sends a first instruction message for update to instruct the UE according to the first instruction message.
- the auxiliary network selection parameters determine whether to select a candidate PLMN.
- the core network can flexibly adjust the auxiliary network selection parameters corresponding to the candidate PLMN according to the signal quality or network load of the candidate PLMN, so as to instruct the UE to determine whether to select the candidate PLMN according to the auxiliary network selection parameters corresponding to the candidate PLMN.
- auxiliary network selection parameters include signal thresholds.
- the signal threshold in the subsequent first indication message is greater than the signal threshold in the previous first indication message.
- the signal threshold in the latter first indication message is smaller than the previous one.
- the first indicates the signal threshold in the message.
- the first predetermined quality and the second predetermined quality may be the same or different.
- the first predetermined quality is different from the second predetermined quality, and the second predetermined quality is greater than the first predetermined quality.
- the first predetermined load and the second predetermined load may be the same or different.
- the first predetermined load is different from the second predetermined load, and the first predetermined load is greater than the second predetermined load.
- the greater the signal threshold corresponding to the candidate PLMN the smaller the possibility that the UE will select the candidate PLMN based on the signal threshold corresponding to the candidate PLMN.
- the smaller the signal threshold corresponding to the candidate PLMN the greater the possibility that the UE will select the candidate PLMN based on the signal threshold corresponding to the candidate PLMN.
- the core network element increases the signal threshold corresponding to the candidate PLMN; and when the signal quality of the candidate PLMN becomes better or the network load decreases, the core network element increases the signal threshold corresponding to the candidate PLMN. In this case, the core network element reduces the signal threshold corresponding to the candidate PLMN. In this way, the possibility of the UE selecting a candidate PLMN with better signal quality or smaller network load can be improved, thereby improving the possibility of the UE camping in a cell with better signal quality or smaller network load. In this way, it can further improve the UE
- the success rate of establishing a data connection can also reduce the possibility of network congestion in candidate PLMNs and help achieve load balancing among candidate PLMNs.
- the value of the signal threshold can be adjusted according to the signal quality of the candidate PLMN or the actual network load.
- the signal threshold of the received signal quality is not greater than the maximum signal quality of the candidate PLMN; for another example, the signal threshold of the received signal quality is not greater than a certain proportion of the maximum signal quality of the candidate PLMN, for example, 80%, 70%, or 60%.
- the second indication message for instructing the UE not to select a PLMN according to the auxiliary network selection parameters will be further described below with reference to some embodiments.
- the core network element when the signal quality of the candidate PLMN is greater than or equal to the third predetermined quality, the core network element sends a second indication message to the UE.
- the third predetermined quality is greater than the aforementioned first predetermined quality and second predetermined quality.
- the signal quality of the candidate PLMN is greater than or equal to the third predetermined quality, which indicates that the signal quality of the candidate PLMN is very good.
- the core network element sends the second indication message to the UE.
- the core network element sends a second indication message to the UE to instruct the UE not to determine whether to select the candidate PLMN based on the signal threshold corresponding to the candidate PLMN, but to directly select the candidate PLMN.
- the core network can control the UE to not determine whether to select the candidate PLMN based on the auxiliary network selection parameters when the signal quality of the candidate PLMN is very good, thereby improving the efficiency of the UE in establishing a data connection and ensuring that the UE establishes a data connection. success rate.
- data-centric (also known as data-only) UEs will select a PLMN based on the auxiliary network selection parameters.
- voice-centric typically do not select a PLMN based on secondary network selection parameters.
- present disclosure also proposes the following embodiments.
- the core network element sends the indication message to the UE only if the UE is a data-centric UE. For example, core network elements will not send indication messages to voice-centric UEs. In this way, the processing pressure of core network elements can be reduced and the possibility of core network element failure can be reduced.
- Figure 2 is a schematic flowchart of a communication method according to other embodiments of the present disclosure.
- the communication method also includes steps 202 to 206.
- step 202 the core network element receives the registration request from the UE.
- the UE after powering on, the UE sends a registration request. In other embodiments, from the untrusted After the area covered by the signal moves to an area covered by the signal, the UE sends a registration request. In some embodiments, the UE sends a registration request when performing periodic registration updates.
- step 204 the core network element obtains the user subscription information of the UE.
- the core network element obtains the user subscription information of the UE from a unified data management (Unified Data Management, UDM) network element.
- UDM Unified Data Management
- the core network element determines whether the UE is a data-centric UE based on the user subscription information.
- step 102 is performed.
- step 102 is performed. For another example, if it is determined that the UE is a voice-centric UE, step 102 is not performed.
- the core network element can accurately determine whether the UE is a data-centric UE according to the user subscription information of the UE, so as to ensure that the indication message is sent to the UE only when the UE is a data-centric UE.
- Figure 3 is a schematic flowchart of a communication method according to further embodiments of the present disclosure.
- the communication method includes steps 302 to 304.
- step 302 the UE receives an indication message from a core network element.
- the UE is a data-centric UE, such as an Internet of Things UE.
- step 304 the UE determines whether to select a PLMN according to the auxiliary network selection parameters according to the indication message.
- the UE determines to select the PLMN according to the secondary network selection parameters, and saves the secondary network selection parameters. In this way, the UE can subsequently perform PLMN selection based on the saved auxiliary network selection parameters.
- the first indication message carries secondary network selection parameters corresponding to the candidate PLMN.
- the UE determines whether to select the candidate PLMN based on the auxiliary network selection parameter corresponding to the candidate PLMN.
- the UE may save the auxiliary network selection parameter carried in the first indication message to the user identity card in the UE.
- the subscriber identification card can be a Universal Subscriber Identity Module (USIM) card, a Subscriber Identity Module (SIM) card, etc.
- USB Universal Subscriber Identity Module
- SIM Subscriber Identity Module
- the UE determines not to select the PLMN according to the secondary network selection parameter.
- the UE when the indication message is the second indication message and the UE has saved the auxiliary network selection parameter, the UE deletes the auxiliary network selection parameter. For example, if the auxiliary network selection parameter is stored in the subscriber identity card of the UE, the UE deletes the auxiliary network selection parameter from the subscriber identity card. In this way, it can ensure that the UE's subsequent PLMN selection is not based on auxiliary network selection parameters.
- the second indication message is used to instruct the UE not to determine whether to select the candidate PLMN based on the auxiliary network selection parameter corresponding to the candidate PLMN.
- the UE deletes the secondary network selection parameter corresponding to the candidate PLMN.
- the UE determines whether to select a PLMN according to the auxiliary network selection parameters according to the instruction message from the core network element. In this way, the success rate of the UE in establishing the data connection can be improved while also improving the efficiency of the UE in establishing the data connection.
- Figure 4 is a schematic flowchart of a communication method according to further embodiments of the present disclosure.
- the communication method also includes step 402.
- step 402 if it is determined that the PLMN is selected according to the secondary network selection parameter, the UE selects the PLMN according to the priorities of the plurality of candidate PLMNs and the secondary network selection parameter.
- the priorities of multiple candidate PLMNs can be determined based on a PLMN Selector List (PLMN Selector List).
- PLMN Selector List may be an operator-defined PLMN selection list or a user-defined PLMN selection list.
- the PLMN selection list can be saved in the subscriber identity card of the UE.
- auxiliary network selection parameters include signal thresholds.
- the UE selects a PLMN based on the priorities of multiple candidate PLMNs and the secondary network selection parameters in the following manner.
- the UE determines whether to select the first candidate PLMN with the first priority.
- the UE selects the first candidate PLMN.
- the UE when the received signal quality of each cell of the first candidate PLMN is less than the signal threshold corresponding to the first candidate PLMN, the UE does not select the first candidate PLMN and uses the second candidate PLMN with the second priority as the first candidate PLMN.
- the candidate PLMN repeats the above determination, that is, determines whether to select the second candidate PLMN.
- the level of the second priority is smaller than the level of the first priority, and the second priority and the first priority are two adjacent ones when the priorities of multiple candidate PLMNs are arranged in order from high to low. priority.
- the UE determines whether to select each candidate PLMN in descending order according to the priority of multiple candidate PLMNs until it selects a candidate PLMN whose received signal quality in at least one cell is greater than or equal to the signal threshold.
- the UE first determines whether to select PLMN A with the highest priority level. During this process, the UE attempts to search for each cell of PLMN A and access a certain cell of PLMN A. At the same time, the UE measures the received signal quality of each cell of PLMN A to determine whether the received signal quality of each cell is greater than or equal to that of PLMN A. corresponding signal threshold. The UE finds that the received signal quality of each cell of PLMN A is less than the signal threshold corresponding to PLMN A.
- the UE continues to determine whether to select PLMN B whose priority level is second to PLMN A. During this process, the UE attempts to search for each cell of PLMN B and access a certain cell of PLMN B. At the same time, the UE measures the received signal quality of each cell of PLMN B to determine whether the received signal quality of each cell is greater than or equal to the signal threshold corresponding to PLMN B. The UE finds that the received signal quality of at least one cell of PLMN B is greater than or equal to the signal threshold corresponding to PLMN B.
- the UE selects PLMN B and camps in a cell of PLMN B to establish a data connection.
- the UE can select a suitable candidate PLMN according to the priorities of multiple candidate PLMNs and the auxiliary network selection parameters.
- the communication method shown in Figures 1 and 2 also includes one or more steps in the communication method shown in Figures 3 and 4.
- the communication method includes step 102 and steps 302 to 304.
- the communication method includes steps 202 to 206, step 102, and steps 302 to 304.
- the communication method includes steps 202 to 206, step 102, and steps 302 to 306.
- Figure 5 is a schematic structural diagram of a core network element according to some embodiments of the present disclosure.
- the core network element 500 includes a sending module 501.
- the sending module 501 is configured to send an indication message to the UE to indicate whether the UE selects the PLMN according to the secondary network selection parameter.
- core network element 500 may also include other various modules to perform operations performed by the core network element in any of the above embodiments.
- Figure 6 is a schematic structural diagram of a UE according to some embodiments of the present disclosure.
- UE 600 includes a receiving module 601 and a determining module 602.
- the receiving module 601 is configured to receive an indication message from a core network element.
- the determining module 602 is configured to determine, according to the indication message, whether to select the PLMN according to the auxiliary network selection parameter.
- the UE 600 may also include various other modules to perform operations performed by the UE in any of the above embodiments.
- FIG. 7 is a schematic structural diagram of an electronic device according to some embodiments of the present disclosure.
- the electronic device 700 includes a memory 701 and a processor 702 coupled to the memory 701 .
- the processor 702 is configured to execute the communication method of any of the above embodiments based on instructions stored in the memory 701 .
- Memory 701 may include, for example, system memory, fixed non-volatile storage media, and the like.
- System memory may store, for example, operating systems, application programs, boot loaders, and other programs.
- the electronic device 700 may also include an input-output interface 703, a network interface 704, a storage interface 705, and the like. These interfaces 703, 704, and 705, and the memory 701 and the processor 702 may be connected through a bus 706, for example.
- the input and output interface 703 provides a connection interface for input and output devices such as a monitor, mouse, keyboard, and touch screen.
- Network interface 704 provides a connection interface for various networked devices.
- the storage interface 705 provides a connection interface for external storage devices such as SD cards and USB disks.
- the electronic device 700 may be a core network element or a UE in any of the above embodiments.
- the electronic device 700 when configured to perform the communication methods of FIG. 1, FIG. 2 and related embodiments, the electronic device 700 is a core network element.
- the electronic device 700 when configured to perform the communication methods of FIG. 3, FIG. 4 and related embodiments, the electronic device 700 is a UE.
- An embodiment of the present disclosure also provides a communication device, including a module configured to perform the communication method of any one of the above embodiments.
- the communication device may be a core network element.
- the communication device may be a UE.
- An embodiment of the present disclosure also provides a communication system, including the core network element (for example, core network element 500) of any of the above embodiments and the UE (for example, UE 600) of any of the above embodiments.
- the core network element for example, core network element 500
- the UE for example, UE 600
- Embodiments of the present disclosure also provide a computer-readable storage medium, which includes computer program instructions.
- the computer program instructions are executed by a processor, the communication method of any of the above embodiments is implemented.
- An embodiment of the present disclosure also provides a computer program product, including a computer program, which implements the communication method of any of the above embodiments when executed by a processor.
- embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk memory, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein. .
- These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
- the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
- These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
- Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.
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Abstract
Description
Claims (29)
- 一种通信方法,包括:核心网网元向用户设备UE发送指示消息,以指示所述UE是否根据辅助网络选择参数选择公共陆地移动网络PLMN。
- 根据权利要求1所述的方法,其中,所述指示消息包括第一指示消息,所述第一指示消息用于指示所述UE根据所述第一指示消息中的所述辅助网络选择参数选择PLMN。
- 根据权利要求2所述的方法,其中,核心网网元向UE发送指示消息包括:所述核心网网元多次向所述UE发送所述第一指示消息,其中,对于相邻两次发送的两条第一指示消息,前一条第一指示消息中的所述辅助网络选择参数不同于后一条第一指示消息中的所述辅助网络选择参数。
- 根据权利要求3所述的方法,其中,所述核心网网元多次向所述UE发送所述第一指示消息包括:在发送所述前一条第一指示消息后,在候选PLMN的信号质量和网络负载中的至少一项满足预定条件的情况下,所述核心网网元发送所述后一条第一指示消息,所述后一条第一指示消息用于指示所述UE根据所述后一条第一指示消息中的所述辅助网络选择参数判断是否选择所述候选PLMN。
- 根据权利要求4所述的方法,其中,所述辅助网络选择参数包括信号门限;在候选PLMN的信号质量小于或等于第一预定质量的情况下,或者在候选PLMN的网络负载大于或等于第一预定负载的情况下,所述后一条第一指示消息中的信号门限大于所述前一条第一指示消息中的信号门限;在候选PLMN的信号质量大于或等于第二预定质量的情况下,或者在候选PLMN的网络负载小于或等于第二预定负载的情况下,所述后一条第一指示消息中的信号门限小于所述前一条第一指示消息中的信号门限。
- 根据权利要求1-5任意一项所述的方法,其中,所述指示消息包括第二指示消息,所述第二指示消息用于指示所述UE不根据所述辅助网络选择参数选择PLMN。
- 根据权利要求6所述的方法,其中,核心网网元向UE发送指示消息包括:在候选PLMN的信号质量大于或等于第三预定质量的情况下,所述核心网网元向所述UE发送所述第二指示消息。
- 根据权利要求1-7任意一项所述的方法,其中,仅在所述UE是以数据为中心的UE的情况下,所述核心网网元向所述UE发送所述指示消息。
- 根据权利要求8所述的方法,还包括:所述核心网网元接收来自所述UE的注册请求;所述核心网网元获取所述UE的用户签约信息;和所述核心网网元根据所述用户签约信息,确定所述UE是否是以数据为中心的UE。
- 一种通信方法,包括:UE接收来自核心网网元的指示消息;和所述UE根据所述指示消息,确定是否根据辅助网络选择参数选择PLMN。
- 根据权利要求10所述的通信方法,其中,所述UE根据所述指示消息,确定是否根据辅助网络选择参数选择PLMN包括:在所述指示消息是携带所述辅助网络选择参数的第一指示消息的情况下,所述UE确定根据所述辅助网络选择参数选择PLMN,并保存所述辅助网络选择参数。
- 根据权利要求11所述的方法,其中,所述UE将所述辅助网络选择参数保存至所述UE中的用户识别卡。
- 根据权利要求10-12任意一项所述的方法,其中,所述UE根据所述指示消息,确定是否根据辅助网络选择参数选择PLMN包括:在所述指示消息是第二指示消息的情况下,所述UE确定不根据所述辅助网络选择参数选择PLMN。
- 根据权利要求13所述的方法,其中,在所述指示消息是所述第二指示消息、且所述UE已保存所述辅助网络选择参数的情况下,所述UE删除所述辅助网络选择参数。
- 根据权利要求10-14任意一项所述的方法,还包括:在确定根据所述辅助网络选择参数选择PLMN的情况下,所述UE根据多个候选PLMN的优先级和所述辅助网络选择参数选择PLMN。
- 根据权利要求15所述的方法,其中,所述辅助网络选择参数包括信号门限;所述UE根据多个候选PLMN的优先级和所述辅助网络选择参数选择PLMN包括:所述UE判断是否选择第一优先级的第一候选PLMN;在所述第一候选PLMN的至少一个小区的接收信号质量大于或等于所述信号门限的情况下,所述UE选择所述第一候选PLMN;在所述第一候选PLMN的各个小区的接收信号质量均小于所述信号门限的情况下,所述UE不选择所述第一候选PLMN,并将第二优先级的第二候选PLMN作为所述第一候选PLMN重复所述判断,其中,所述第二优先级的级别小于所述第一优先级的级别,且所述第二优先级和所述第一优先级是所述多个候选PLMN的优先级按照从高到低的顺序排列的情况下的相邻的两个优先级。
- 根据权利要求10-16任意一项所述的方法,其中,所述UE为以数据为中心的UE。
- 根据权利要求1-17任意一项所述的方法,其中,所述核心网网元为移动性管理功能网元。
- 根据权利要求1-17任意一项所述的方法,其中,所述指示消息为非接入层消息。
- 根据权利要求1-17任意一项所述的方法,其中,所述辅助网络选择参数包括信号门限。
- 根据权利要求20所述的方法,其中,所述信号门限包括信号强度门限。
- 一种通信方法,包括:向用户设备UE发送指示消息,以指示所述UE是否根据辅助网络选择参数选择公共陆地移动网络PLMN。
- 一种核心网网元,包括:发送模块,被配置为向UE发送指示消息,以指示所述UE是否根据辅助网络选择参数选择PLMN。
- 一种核心网网元,包括:存储器;以及耦接至所述存储器的处理器,被配置为基于存储在所述存储器中的指令,执行权利要求1-9任意一项所述的方法。
- 一种用户设备,包括:接收模块,被配置为接收来自核心网网元的指示消息;和确定模块,被配置为根据所述指示消息,确定是否根据辅助网络选择参数选择 PLMN。
- 一种用户设备,包括:存储器;以及耦接至所述存储器的处理器,被配置为基于存储在所述存储器中的指令,执行权利要求10-17任意一项所述的方法。
- 一种通信系统,包括:权利要求23或24所述的核心网网元;和权利要求25或26所述的用户设备。
- 一种计算机可读存储介质,包括计算机程序指令,其中,所述计算机程序指令被处理器执行时实现权利要求1-22任意一项所述的方法。
- 一种计算机程序产品,包括计算机程序,其中,所述计算机程序被处理器执行时实现权利要求1-22任意一项所述的方法。
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