CN113574935A - Network selection method and user equipment - Google Patents

Network selection method and user equipment Download PDF

Info

Publication number
CN113574935A
CN113574935A CN201980094015.XA CN201980094015A CN113574935A CN 113574935 A CN113574935 A CN 113574935A CN 201980094015 A CN201980094015 A CN 201980094015A CN 113574935 A CN113574935 A CN 113574935A
Authority
CN
China
Prior art keywords
network
plmn
list
priority
type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201980094015.XA
Other languages
Chinese (zh)
Inventor
杨皓睿
卢前溪
许阳
杨宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2019/098950 priority Critical patent/WO2021017015A1/en
Publication of CN113574935A publication Critical patent/CN113574935A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service

Abstract

The invention discloses a network selection method, User Equipment (UE), a chip, a computer readable storage medium, a computer program product and a computer program, wherein the method comprises the following steps: selecting a PLMN to be accessed from the detected at least one candidate PLMN according to the priorities of at least two public land mobile network PLMNs; wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.

Description

Network selection method and user equipment Technical Field
The present invention relates to the field of information processing technologies, and in particular, to a network selection method, a User Equipment (UE), a chip, a computer-readable storage medium, a computer program product, and a computer program.
Background
When selecting a Public Land Mobile Network (PLMN), processing is performed based on a selection priority order of PLMNs, and usually a Home Public Land Mobile Network (HPLMN) and a highest-priority Equivalent Home Public Land Mobile Network (EHPLMN) list are considered first, without considering types of access networks under the PLMN. In the current 5G deployment scenario, there is a possibility that multiple operators jointly form a network. For example: when a UE of another operator 2 with a roaming agreement moves to a coverage area of the 5G network in a region, the UE may not preferentially select the 5G network provided by the operator 1 in the region, so that communication efficiency or communication quality of the UE cannot be guaranteed.
Disclosure of Invention
To solve the above technical problem, embodiments of the present invention provide a network selection method, a UE, a chip, a computer-readable storage medium, a computer program product, and a computer program.
In a first aspect, a network selection method is provided, which is applied to a user equipment UE, and includes:
selecting a PLMN to be accessed from at least one detected candidate PLMN according to the priorities of at least two PLMNs;
wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.
In a second aspect, a UE is provided, including:
the processing unit is used for selecting the PLMN to be accessed from at least one detected candidate PLMN according to the priority of at least two public land mobile network PLMNs;
wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.
In a third aspect, a UE is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.
In a fourth aspect, a chip is provided for implementing the method in the foregoing implementation manners.
Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method according to any one of the first aspect and the third aspect or the implementation manners thereof.
In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first and third aspects or implementations thereof.
A sixth aspect provides a computer program product comprising computer program instructions to cause a computer to perform the method of any of the first to second aspects above or implementations thereof.
In a seventh aspect, a computer program is provided, which, when run on a computer, causes the computer to perform the method of the first aspect or its implementations.
By adopting the scheme, the priority of the PLMN corresponding to the first type of network is higher than that of the PLMN corresponding to the second type of network, so that the UE can select to access the PLMN corresponding to the first type of network as much as possible. Therefore, the communication efficiency and the communication quality of the UE are ensured.
Drawings
Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;
fig. 2 is a schematic flow chart of a network selection method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an IMSI composition according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a UE structure according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a chip provided by an embodiment of the present application;
fig. 7 is a schematic diagram two of a communication system architecture provided in an embodiment of the present application.
Detailed Description
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.
For example, a communication system 100 applied in the embodiment of the present application may be as shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with UEs located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Network device (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.
The communication system 100 also includes at least one UE120 located within the coverage area of the network device 110. "UE" as used herein includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or another UE's device configured to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A UE that is arranged to communicate over a radio interface may be referred to as a "radio communication terminal", "radio terminal" or "mobile terminal".
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
An embodiment of the present invention provides a network selection method, applied to a UE, as shown in fig. 2, including:
step 21: selecting a Public Land Mobile Network (PLMN) to be accessed from the detected at least one candidate PLMN according to priorities of the at least two PLMNs;
wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.
The first type of network may be a 5G network, and correspondingly, the second type of network may be a 4G network, a 3G network, and so on; the second type of network may also be one or more, for example, the second type of network may be a second type of network at the visited location, a second type of network at the home location, which may be understood as a second type of network corresponding to the visited location PLMN and a second type of network corresponding to the home location PLMN, respectively.
The first type of network is taken as a 5G network as an example, and actually, as communication technologies are discovered, updated networks may appear, so that the first type of network may be understood as a current latest network, such as a 6G network and the like; correspondingly, when the first type of network is a 6G network, the second type of network may be at least one of a 5G network and a 4G network.
The processing of the scheme provided by this embodiment in the UE may include:
detecting surrounding cells or surrounding networks to obtain corresponding system information; then a Non-access stratum (NAS) of a chip in the UE triggers the access stratum to read system information of surrounding cells, PLMN IDs of the surrounding cells are obtained from the system information and serve as candidate PLMNs, and the access stratum reports the detected at least one candidate PLMN ID to the NAS layer; the NAS layer selects one PLMN from the PLMNs according to the priority of the PLMNs.
In addition, the scenario in which the UE executes the scheme provided in this embodiment may be that the UE selects a PLMN of the network immediately after being turned on or entering an idle state.
When the UE performs the selection of the PLMN corresponding to the network, the priority order needs to be determined according to a certain priority order, and the priority order may be determined by reading at least one of the following files from the SIM card: "HPLMN Selector with Access Technology" (i.e. HPLMN associated Access Technology), "User Controlled PLMN Selector with Access Technology" (User Controlled PLMN selection associated Access Technology), "Forbidden PLMNs", "Equivalent HPLMN", "Operator Controlled PLMN Selector with Access Technology" (Operator Controlled PLMN selection associated Access Technology).
The NAS layer selects a PLMN following sequence:
when the EHPLMN is not configured, selecting according to the HPLMN, or, under the condition of the highest priority configuration of the EHPLMN, selecting according to the EHPLMN;
that is, one case is: the HPLMN is a first priority, the EHPLMN is a second priority, and the first priority is higher than the second priority for selection; the EHPLMN may include identifiers of multiple PLMNs, and accordingly, there is a corresponding priority for the multiple PLMN identifiers in the EHPLMN.
In another case, the EHPLMN may include the HPLMN, and in this case, PLMN selection may be performed according to the priority in the EHPLMN, and it should be noted that the priority of the HPLMN in the EHPLMN is also the highest priority.
Access technology selection is then also performed based on the user-controlled and/or operator-controlled PLMN selection associated access technology list in the SIM card.
The next sequence may be to select a PLMN with good signal quality and its associated access technology.
As shown in fig. 3, in one embodiment, the HPLMN is the mobile country code MCC + mobile network code MNC in the IMSI.
In addition, there is also HPLMN Selector with Access Technology (i.e. HPLMN associated Access Technology list) in the SIM card of the UE, one of which is for example the following table, the higher the priority rank is the earlier:
based on the foregoing description, the present embodiment is described below in various scenarios:
scene 1,
Setting a new PLMN identification for the first type of network provided by different operators, and keeping the original PLMN identification corresponding to the second type of network. For example, an operator sets a PLMN as identifier 1 for a 5G network, other operators may set PLMN identifiers 2 and 3 for the 5G network, and the PLMN set for the 5G network may serve a home network user, may serve only a roaming user, and may serve the home network and the roaming user; the original identities 4, 5, 6 may be reserved for 4G networks. In this scenario, the purpose of preferentially selecting the PLMN corresponding to the first type of network is achieved by configuring the parameter or list related to the PLMN priority. To implement the priority, the following configuration is adopted in the present scenario:
determining priorities of at least two PLMNs based on a Home Public Land Mobile Network (HPLMN) and an Equivalent Home Public Land Mobile Network (EHPLMN) list;
wherein, the PLMN included in the HPLMN is a first priority, and the PLMN included in the EHPLMN list is a second priority; the second priority is lower than the first priority.
The method can also comprise the following steps: taking the PLMN contained in the user-controlled or operator-controlled associated access technology list as a third priority;
wherein the second priority is lower than the first priority and the third priority is lower than the second priority.
At this time, it should be understood that the EHPLMN list may include the HPLMN, and then the identifier of the PLMN corresponding to the HPLMN in the EHPLMN list is also the first priority, and the identifiers of other PLMNs are the second priority.
Further, there may be more than one other PLMN identity of the EHPLMN, i.e. there are also sub-priorities of the identities of the more than one other PLMN in the second priority. Similarly, the user-controlled or operator-controlled associated access technology list may also include a plurality of PLMN identities and their associated access technologies, wherein the plurality of PLMNs are also provided with sub-priorities.
That is, the UE selects according to the HPLMN, and when there is no identifier of the matching PLMN, selects from the EHPLMN list according to its existing sub-priority; and if the EHPLMN list also has no matched PLMN identification, selecting according to the PLMN and the corresponding sub-priority contained in the user-controlled or operator-controlled associated access technology list.
In addition, the PLMN to be accessed can be selected based on the selection of the priority order, but if not, a PLMN with the best signal quality can be selected as the PLMN to be accessed according to the signal quality of the currently detected PLMN.
The HPLMN comprises: an identification of a first PLMN corresponding to the first type of network. For example, set HPLMN ═ PLMN 1. PLMN1 may be understood as the identity of the home PLMN.
The list of access technologies associated with the HPLMN includes one of:
empty set or not present;
a first access network corresponding to a first type of network under a non-independent networking, NSA, network;
and under the independent networking SA network, a second access network corresponding to the first type of network.
For example, assuming that the identity of the first PLMN of the first type of network is denoted PLMN1, i.e. the identity of the home PLMN, PLMN 1+ E-UTRAN is filled in under the NSA network, and PLMN 1+ NG-RAN is filled in under the SA network.
The EHPLMN list comprises one of:
empty or absent; for example, EHPLMN is empty or not provisioned;
an identification of a second PLMN corresponding to the first type of network; for example, the second PLMN may be a visited PLMN, and a PLMN of one visited place is identified as PLMN2, and then may be EHPLMN — PLMN 2;
the identity of the second PLMN corresponding to the first type of network is prioritized over the identity of the third PLMN corresponding to the second type of network; for example, if the PLMN identifier of the visited place is PLMN2, and the identifier of a PLMN corresponding to the second type of network is PLMN4, then EHPLMN ═ PLMN 2- > PLMN-4 may be set.
Further, determining priorities of at least two PLMNs based on a User or Operator Controlled list of associated Access technologies (User or Operator Controlled PLMN Selector with Access Technology); wherein a PLMN corresponding to the user-controlled or operator-controlled associated access technology list is a third priority, and the third priority is lower than the second priority;
wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
the first access network or the second access network associated with the identity of the second PLMN corresponding to the first type of network has a higher priority than the first access network associated with the identity of the third PLMN corresponding to the second type of network; this configuration may correspond to the situation where the EHPLMN list is set to be empty or not present, that is, when the EHPLMN list does not exist, the selection may be performed according to the identifier of the PLMN configured by the user-controlled or operator-controlled associated access technology list and its corresponding access technology;
associating an identity of a third PLMN corresponding to the second type of network with the first access network; this configuration corresponds to the case where the identifier of the visited PLMN corresponding to the first type of network is set in the EHPLMN list, that is, when the EHPLMN only configures the identifier of the visited PLMN of the first type of network, if the PLMN is not detected, the PLMN selection is performed by using the identifier of the PLMN configured by the user-controlled or operator-controlled associated access technology list and the access technology corresponding to the identifier;
access technologies associated with the identities of other PLMNs; wherein the other PLMNs are PLMNs except the first PLMN, the second PLMN and the third PLMN. In case the identifier of the visited PLMN corresponding to the first type of network is set in the EHPLMN list with a higher priority than the identifier of the home PLMN corresponding to the second type of network, i.e. when no suitable PLMN is selected according to the configuration of such EHPLMN, the PLMN is selected using the identifiers of other PLMNs configured in the user-controlled or operator-controlled associated access technology list and their associated access technologies.
For example, assume that the visited PLMN corresponding to the first type of network is identified as PLMN2, one visited PLMN corresponding to the second type of network is identified as PLMN4, the first access network is E-UTRAN, the second access network is NG-RAN:
then the first access network or the second access network associated with the identity of the second PLMN corresponding to the first type of network having a higher priority than the first access network associated with the identity of the third PLMN corresponding to the second type of network may be expressed as: PLMN 2+ E-UTRAN/PLMN 2+ NG-RAN- > PLMN 4+ E-UTRAN;
the association of the identity of the third PLMN corresponding to the second type of network with the first access network may be expressed as: PLMN 4+ E-UTRAN.
When the UE moves, when the EHPLMN is configured with only the identifier of the visited PLMN of the first type of network, and the identifier of the home PLMN corresponding to the second type of network is associated with the first access network, service continuity can be further ensured because the equivalent (equivalent) PLMN assumes that an interface exists between networks, and can perform UE registration context transfer, and when the UE moves to the equivalent PLMN, it is not necessary to initiate initial registration.
It should be noted that, in this scenario, it has been described above that the first PLMN set for the 5G network, that is, the first type of network, may serve the home network UE, may serve only the roaming UE, and may also serve the home network and the roaming UE.
When the 5G network, i.e. the first PLMN set corresponding to the first type of network, only serves roaming UEs, and does not serve the local network UE, the identity of the third PLMN still corresponding to the second type of network set in the UE may be selected according to the configuration in the HPLMN associated access technology list, since the HPLMN associated technology list includes the first access network or the second access network that is the first type of network (i.e. 5G), and in addition, in this case, the priority of the third PLMN corresponding to the second type of network in the EHPLMN list and in the user-controlled or operator-controlled associated access technology list is lower. Therefore, the UE can still access the PLMN corresponding to the first type network.
Scene 2,
The operator uses the old PLMN ID without having to assign a new card to the 5G subscriber. I.e. each operator still uses the current PLMN ID. For example: the existing PLMN IDs of the three operators are 4, 5 and 6 respectively. In this way, each operator does not need to assign a new card to the user.
In this scenario, in order to maintain the UE to select the first type of network, the RAT is prioritized according to the present scenario, for example, the priority of the PLMN is determined based on a PLMN selection list of the first type of network and a PLMN selection list of the second type of network; wherein the PLMN selection list of the first type of network has a higher priority than the PLMN selection list of the second type of network.
That is, when selecting a PLMN, the PLMN list of the first type of network may be used to perform PLMN selection, and when no PLMN is selected, the PLMN list of the second type of network may be used to perform PLMN selection.
In this case, the order of the existing PLMN selections may be multiplexed, that is, the order included in the PLMN list of the second type network may be the same as the order of the PLMN selections in the prior art.
In the NAS scenario, because access technologies are all E-UTRAN and are indistinguishable from a general LTE network, it is necessary for the UE to know whether the cell belongs to the NSA network or the LTE network through system information of the cell. Here, collectively, NSA and SA are referred to as 5G access technology, that is, they can be used as a first type network or an access technology of the first type network, and LTE is used as a 4G access technology, that is, they can be understood as a second type network or an access technology of the second type network.
The configuration of this scenario may be as follows:
for the PLMN selection list of the first type of network, the PLMN selection list using RAT 5G as entry specifically includes:
the PLMN selection list of the first type of network comprises: an HPLMN; the HPLMN comprises an identifier of a first PLMN; for example, HPLMN ═ PLMN 4;
the HPLMN associated access technology list is set to null or non-existent.
An EHPLMN list contained in a PLMN selection list of the first type of network; wherein the PLMN included in the EHPLMN list is a second sub-priority; the second sub-priority is lower than the first sub-priority.
The EHPLMN list in the PLMN selection list of the first type of network is empty or non-existent;
or, the identifier of the visited PLMN included in the EHPLMN list in the PLMN selection list of the first type of network is used as the second sub-priority; wherein the second sub-priority is lower than the first sub-priority. For example, the PLMN id of the visited place is 5, which may be denoted as EHPLMN 5.
The PLMN selection list of the first type of network further comprises: a user-controlled or operator-controlled list of associated access technologies; the PLMN included in the user-controlled or operator-controlled list of associated access technologies is a third sub-priority; the third sub-priority is lower than the second sub-priority;
wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
the priority of the first access network or the second access network associated with the identifier of the visited PLMN is higher than that of the first access network associated with the identifier of the home PLMN; corresponding to the processing mode that the EHPLMN list in the PLMN selection list of the first type of network is empty or does not exist;
the identifier of the home PLMN is associated with the first access network; and the processing mode corresponds to the processing mode of using the identifier of the visited PLMN contained in the EHPLMN list in the PLMN selection list of the first type of network as the second sub-priority.
The home PLMN is identified as 4, the visited PLMN is identified as 5,
the first access network or the second access network associated with the identity of the visited PLMN having a higher priority than the first access network associated with the identity of the home PLMN may be denoted PLMN 5+ E-UTRAN or PLMN 5+ NG-RAN > PLMN 4+ E-UTRAN;
the identification of the home PLMN is associated with the first access network may be denoted PLMN 4+ E-UTRAN.
In the foregoing scenario, when the UE moves, the user-controlled or operator-controlled associated access technology list associates the first access network with the identifier of the home PLMN, and the identifier of the visited PLMN included in the EHPLMN list in the PLMN selection list of the first type of network is used as a configuration mode of the second sub-priority, which can better ensure service continuity because the equivalent PLMN assumes that there is an interface between networks, can perform UE registration context transfer, and when the UE moves to the equivalent PLMN, it is not necessary to initiate initial registration.
The HPLMN and the HPLMN associated access technology list contained in the PLMN selection list of the second type of network;
wherein the HPLMN comprises an identification of a first PLMN; the HPLMN associated access technology list is set to null or non-existent.
That is, when the second type of network is 4G, the UE side may store a PLMN selection list indexed by RAT 4G:
where HPLMN may be set to PLMN4 (i.e., the identity of the home PLMN);
the HPLMN selector with access technology is empty or not.
Scene 3,
In this scenario, the operator uses the old PLMN ID without having to assign a new card to the 5G subscriber. I.e. each operator still uses the current PLMN ID. For example: the existing PLMN IDs of the three operators are 4, 5 and 6 respectively. In this way, each operator does not need to assign a new card to the user. For example, the operator configures the data file for the subscriber with the 5G subscription in the following manner, and here, the operator holding the PLMN4 is taken as an example. In order for the UE to always select to the 5G network, priority PLMN 4+5G- > PLMN 5+5G- > PLMN 4+4G is required.
In the NAS scenario, because access technologies are all E-UTRAN and are indistinguishable from a general LTE network, it is necessary for the UE to know whether the cell belongs to the NSA network or the LTE network through system information of the cell. In this scenario, both NSA and SA are collectively referred to as an access technology of a first type of network, for example, a 5G access technology, and LTE is used as an access technology of a second type of network, for example, a 4G access technology.
In the scene, a PLMN corresponding to the HPLMN is used as a first priority;
taking a PLMN included in the EHPLMN list as a second priority;
wherein the second priority is lower than the first priority.
At this time, it should be understood that the EHPLMN list may include the HPLMN, and then the identifier of the PLMN corresponding to the HPLMN in the EHPLMN list is also the first priority, and the identifiers of other PLMNs are the second priority.
Further, there may be more than one other PLMN identity of the EHPLMN, i.e. there are also sub-priorities of the identities of the more than one other PLMN in the second priority.
The HPLMN includes an identification of the first PLMN. The first PLMN may be a home PLMN, for example, if the identifier of the home PLMN is 4, then HPLMN is PLMN 4;
the HPLMN associated access technology list comprises: the identity of the first PLMN is associated with an access technology of the first type of network. That is, in HPLMN selector with access technology, PLMN 4+5G is filled in, note that PLMN 4+4G cannot be present here.
The EHPLMN list is set to null or non-existent.
Or the priority corresponding to the identifier of the PLMN included in the EHPLMN list is the same as the access technology list associated with the HPLMN. The priority in the EHPLMN list and the HPLMN associated access technology list may be set the same, or the HPLMN associated access technology list may be directly used as the EHPLMN list.
Alternatively, the EHPLMN list is associated with a list of access technologies associated with the EHPLMN;
wherein the access technology list associated with the EHPLMN includes: the identification of the second PLMN is associated with the access technology of the first type of network. That is, instead of using the same associated access technology list with the HPLMN, an EHPLMN selector with access technology list is newly added, and the PLMN identifier of the visited place and the corresponding access technology, for example, PLMN 5+5G, are set in the list. At this time, in order to prevent the UE of the PLMN4 from selecting the 4G network of the PLMN 5, PLMN 5+4G needs not to appear;
using the PLMN contained in the access technology list related to operator control as a third priority; the third priority is lower than the second priority;
wherein the operator controls a list of associated access technologies, including one of:
the identifier of the second PLMN is associated with the access technology of the first network, the identifier of the first PLMN is associated with the access technology of the second network, and the priority of the access technology of the identifier of the second PLMN associated with the first network is higher than that of the access technology of the identifier of the first PLMN associated with the second network; for example, it can be expressed as PLMN 5+5G- > PLMN 4+ 4G;
the first PLMN identification is associated with the access technology of the second type of network; may be denoted PLMN 4+ 4G.
The operator-controlled associated access technology list may also include a plurality of PLMN identities and their associated access technologies, where the plurality of PLMNs are also provided with sub-priorities.
That is, the UE selects according to the HPLMN, and when there is no identifier of the matching PLMN, selects from the EHPLMN list according to its existing sub-priority; and if the EHPLMN list also has no matched PLMN identification, selecting according to the PLMN and the corresponding sub-priority contained in the access technology list controlled by the operator.
In addition, the PLMN to be accessed can be selected based on the selection of the priority order, but if not, a PLMN with the best signal quality can be selected as the PLMN to be accessed according to the signal quality of the currently detected PLMN.
It should be noted that, when the EHPLMN is empty or does not exist, the identifier of the visited PLMN may be associated with the first type of network and the identifier of the home PLMN may be associated with the second type of network according to the associated access technology controlled by the corresponding operator, and the priority of the identifier of the visited PLMN associated with the first type of network is higher than that of the identifier of the home PLMN associated with the second type of network;
in addition, the EHPLMN adopts the priority in the access technology list associated with the HPLMN; or, establishing an access technology list associated with the EHPLMN, wherein the identifier of the visited PLMN is set in the access technology list associated with the EHPLMN and is associated with the first type of network, and the priority is highest. In both cases, the operator controlled associated access technology setting is associated with the second type of network for the home PLMN identity. The configuration mode can ensure service continuity because the priority PLMN assumes that an interface exists between networks, can perform UE registration context transfer, and does not need to initiate initial registration when the UE moves to the priority PLMN.
Therefore, by adopting the scheme, the priority of the PLMN corresponding to the first type of network is controlled to be higher than the priority of the PLMN corresponding to the second type of network, so that the UE can select to access the PLMN corresponding to the first type of network as much as possible. Therefore, the communication efficiency and the communication quality of the UE are ensured.
An embodiment of the present invention provides a UE, as shown in fig. 4, including:
a processing unit 31 for selecting a Public Land Mobile Network (PLMN) to be accessed from the detected at least one candidate PLMN according to priorities of the at least two PLMNs;
wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.
The first type of network may be a 5G network, and correspondingly, the second type of network may be a 4G network, a 3G network, and so on; the second type of network may also be one or more, for example, the second type of network may be a second type of network at the visited location, a second type of network at the home location, which may be understood as a second type of network corresponding to the visited location PLMN and a second type of network corresponding to the home location PLMN, respectively.
The present embodiment is described below in various scenarios:
scene 1,
Setting a new PLMN identification for the first type of network provided by different operators, and keeping the original PLMN identification corresponding to the second type of network. For example, an operator sets the PLMN identifier to 1 for a 5G network, and other operators may set the PLMN identifiers to 2 and 3 for the 5G network; the original identities 4, 5, 6 may be reserved for 4G networks. In this scenario, the purpose of preferentially selecting the PLMN corresponding to the first type of network is achieved by configuring the parameter or list related to the PLMN priority. To implement the priority, the following configuration is adopted in the present scenario:
a processing unit 31 for determining a priority of at least two PLMNs based on the home public land mobile network HPLMN and the equivalent home public land mobile network EHPLMN list;
wherein, the PLMN included in the HPLMN is a first priority, and the PLMN included in the EHPLMN list is a second priority; the second priority is lower than the first priority.
The processing unit 31 may further include: taking the PLMN contained in the user-controlled or operator-controlled associated access technology list as a third priority;
wherein the second priority is lower than the first priority and the third priority is lower than the second priority.
At this time, it should be understood that the EHPLMN list may include the HPLMN, and then the identifier of the PLMN corresponding to the HPLMN in the EHPLMN list is also the first priority, and the identifiers of other PLMNs are the second priority.
Further, there may be more than one other PLMN identity of the EHPLMN, i.e. there are also sub-priorities of the identities of the more than one other PLMN in the second priority. Similarly, the user-controlled or operator-controlled associated access technology list may also include a plurality of PLMN identities and their associated access technologies, wherein the plurality of PLMNs are also provided with sub-priorities.
In addition, the PLMN to be accessed can be selected based on the selection of the priority order, but if not, a PLMN with the best signal quality can be selected as the PLMN to be accessed according to the signal quality of the currently detected PLMN.
The HPLMN comprises: an identification of a first PLMN corresponding to the first type of network. For example, set HPLMN ═ PLMN 1. PLMN1 may be understood as the identity of the home PLMN.
The list of access technologies associated with the HPLMN includes one of:
empty set or not present;
a first access network corresponding to a first type of network under a non-independent networking, NSA, network;
and under the independent networking SA network, a second access network corresponding to the first type of network.
The EHPLMN list comprises one of:
empty or absent; for example, EHPLMN is empty or not provisioned;
an identification of a second PLMN corresponding to the first type of network; for example, the second PLMN may be a visited PLMN, and a PLMN of one visited place is identified as PLMN2, and then may be EHPLMN — PLMN 2;
the identity of the second PLMN corresponding to the first type of network is prioritized over the identity of the third PLMN corresponding to the second type of network; for example, if the PLMN identifier of the visited place is PLMN2, and the identifier of a PLMN corresponding to the second type of network is PLMN4, then EHPLMN ═ PLMN 2- > PLMN-4 may be set.
Further, determining priorities of at least two PLMNs based on a User or Operator Controlled list of associated Access technologies (User or Operator Controlled PLMN Selector with Access Technology); wherein a PLMN corresponding to the user-controlled or operator-controlled associated access technology list is a third priority, and the third priority is lower than the second priority;
wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
the first access network or the second access network associated with the identity of the second PLMN corresponding to the first type of network has a higher priority than the first access network associated with the identity of the third PLMN corresponding to the second type of network; this configuration may correspond to the situation where the EHPLMN list is set to be empty or not present, that is, when the EHPLMN list does not exist, the selection may be performed according to the identifier of the PLMN configured by the user-controlled or operator-controlled associated access technology list and its corresponding access technology;
associating an identity of a third PLMN corresponding to the second type of network with the first access network; this configuration corresponds to the case where the identifier of the visited PLMN corresponding to the first type of network is set in the EHPLMN list, that is, when the EHPLMN only configures the identifier of the visited PLMN of the first type of network, if the PLMN is not detected, the PLMN selection is performed by using the identifier of the PLMN configured by the user-controlled or operator-controlled associated access technology list and the access technology corresponding to the identifier;
access technologies associated with the identities of other PLMNs; wherein the other PLMNs are PLMNs except the first PLMN, the second PLMN and the third PLMN. In case the identifier of the visited PLMN corresponding to the first type of network is set in the EHPLMN list with a higher priority than the identifier of the home PLMN corresponding to the second type of network, i.e. when no suitable PLMN is selected according to the configuration of such EHPLMN, the PLMN is selected using the identifiers of other PLMNs configured in the user-controlled or operator-controlled associated access technology list and their associated access technologies.
For example, assume that the visited PLMN corresponding to the first type of network is identified as PLMN2, one visited PLMN corresponding to the second type of network is identified as PLMN4, the first access network is E-UTRAN, the second access network is NG-RAN:
then the first access network or the second access network associated with the identity of the second PLMN corresponding to the first type of network having a higher priority than the first access network associated with the identity of the third PLMN corresponding to the second type of network may be expressed as: PLMN 2+ E-UTRAN/PLMN 2+ NG-RAN- > PLMN 4+ E-UTRAN;
the association of the identity of the third PLMN corresponding to the second type of network with the first access network may be expressed as: PLMN 4+ E-UTRAN.
Scene 2,
The operator uses the old PLMN ID without having to assign a new card to the 5G subscriber. I.e. each operator still uses the current PLMN ID. For example: the existing PLMN IDs of the three operators are 4, 5 and 6 respectively. In this way, each operator does not need to assign a new card to the user.
In this scenario, in order to implement the UE selecting the first type of network, the RAT is prioritized in this scenario, for example, the processing unit 31 determines the priority of the PLMN based on the PLMN selection list of the first type of network and the PLMN selection list of the second type of network; wherein the PLMN selection list of the first type of network has a higher priority than the PLMN selection list of the second type of network.
The configuration of this scenario may be as follows:
for the PLMN selection list of the first type of network, the PLMN selection list using RAT 5G as entry specifically includes:
the PLMN selection list of the first type of network comprises: an HPLMN; the HPLMN comprises an identifier of a first PLMN; for example, HPLMN ═ PLMN 4;
the HPLMN associated access technology list is set to null or non-existent.
An EHPLMN list contained in a PLMN selection list of the first type of network; wherein the PLMN included in the EHPLMN list is a second sub-priority; the second sub-priority is lower than the first sub-priority.
The EHPLMN list in the PLMN selection list of the first type of network is empty or non-existent;
or, the identifier of the visited PLMN included in the EHPLMN list in the PLMN selection list of the first type of network is used as the second sub-priority; wherein the second sub-priority is lower than the first sub-priority. For example, the PLMN id of the visited place is 5, which may be denoted as EHPLMN 5.
The PLMN selection list of the first type of network further comprises: a user-controlled or operator-controlled list of associated access technologies; the PLMN included in the user-controlled or operator-controlled list of associated access technologies is a third sub-priority; the third sub-priority is lower than the second sub-priority;
wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
the priority of the first access network or the second access network associated with the identifier of the visited PLMN is higher than that of the first access network associated with the identifier of the home PLMN; corresponding to the processing mode that the EHPLMN list in the PLMN selection list of the first type of network is empty or does not exist;
the identifier of the home PLMN is associated with the first access network; and the processing mode corresponds to the processing mode of using the identifier of the visited PLMN contained in the EHPLMN list in the PLMN selection list of the first type of network as the second sub-priority.
A HPLMN included in a PLMN selection list of the second type of network;
wherein the HPLMN comprises an identification of a first PLMN; the HPLMN associated access technology list is set to null or non-existent.
Scene 3,
In this scenario, the operator uses the old PLMN ID without having to assign a new card to the 5G subscriber. I.e. each operator still uses the current PLMN ID. For example: the existing PLMN IDs of the three operators are 4, 5 and 6 respectively. In this way, each operator does not need to assign a new card to the user. For example, the operator configures the data file for the subscriber with the 5G subscription in the following manner, and here, the operator holding the PLMN4 is taken as an example. In order for the UE to always select to the 5G network, priority PLMN 4+5G- > PLMN 5+5G- > PLMN 4+4G is required.
In the NAS scenario, because access technologies are all E-UTRAN and are indistinguishable from a general LTE network, it is necessary for the UE to know whether the cell belongs to the NSA network or the LTE network through system information of the cell. In this scenario, both NSA and SA are collectively referred to as an access technology of a first type of network, for example, a 5G access technology, and LTE is used as an access technology of a second type of network, for example, a 4G access technology.
In this scenario, the processing unit 31 takes the PLMN corresponding to the HPLMN as the first priority;
taking a PLMN included in the EHPLMN list as a second priority;
wherein the second priority is lower than the first priority.
At this time, it should be understood that the EHPLMN list may include the HPLMN, and then the identifier of the PLMN corresponding to the HPLMN in the EHPLMN list is also the first priority, and the identifiers of other PLMNs are the second priority.
Further, there may be more than one other PLMN identity of the EHPLMN, i.e. there are also sub-priorities of the identities of the more than one other PLMN in the second priority.
The HPLMN includes an identification of the first PLMN. The first PLMN may be a home PLMN, for example, if the identifier of the home PLMN is 4, then HPLMN is PLMN 4;
the HPLMN associated access technology list comprises: the identity of the first PLMN is associated with an access technology of the first type of network. That is, in HPLMN selector with access technology, PLMN 4+5G is filled in, note that PLMN 4+4G cannot be present here.
The EHPLMN list is set to null or non-existent.
Or the priority corresponding to the identifier of the PLMN included in the EHPLMN list is the same as the access technology list associated with the HPLMN. The priority in the access technology list associated with the HPLMN may be set the same for the EHPLMN list or may be the HPLMN directly as the EHPLMN list.
In the alternative to this, either,
the EHPLMN list is associated with an access technology list associated with the EHPLMN;
wherein the access technology list associated with the EHPLMN includes: the identification of the second PLMN is associated with the access technology of the first type of network. That is, instead of using the same associated access technology list with the HPLMN, an EHPLMN selector with access technology list is newly added, and the PLMN identifier of the visited place and the corresponding access technology, for example, can be thank wegian PLMN 5+5G, are set in the list. At this time, in order to prevent the UE of the PLMN4 from selecting the 4G network of the PLMN 5, PLMN 5+4G needs not to appear;
using the PLMN contained in the access technology list related to operator control as a third priority; the third priority is lower than the second priority;
wherein the operator controls a list of associated access technologies, including one of:
the identifier of the second PLMN is associated with the access technology of the first network, the identifier of the first PLMN is associated with the access technology of the second network, and the priority of the access technology of the identifier of the second PLMN associated with the first network is higher than that of the access technology of the identifier of the first PLMN associated with the second network; for example, it can be expressed as PLMN 5+5G- > PLMN 4+ 4G;
the first PLMN identification is associated with the access technology of the second type of network; may be denoted PLMN 4+ 4G.
The operator-controlled associated access technology list may also include a plurality of PLMN identities and their associated access technologies, where the plurality of PLMNs are also provided with sub-priorities.
It should be noted that, when the EHPLMN is empty or does not exist, the identifier of the visited PLMN may be associated with the first type of network and the identifier of the home PLMN may be associated with the second type of network according to the associated access technology controlled by the corresponding operator, and the priority of the identifier of the visited PLMN associated with the first type of network is higher than that of the identifier of the home PLMN associated with the second type of network;
in addition, the EHPLMN adopts the priority in the access technology list associated with the HPLMN; or, establishing an access technology list associated with the EHPLMN, wherein the identifier of the visited PLMN is set in the access technology list associated with the EHPLMN and is associated with the first type of network, and the priority is highest. In both cases, the operator controlled associated access technology setting is associated with the second type of network for the home PLMN identity. The configuration mode can ensure service continuity because the priority PLMN assumes that an interface exists between networks, can perform UE registration context transfer, and does not need to initiate initial registration when the UE moves to the priority PLMN.
Therefore, by adopting the scheme, the priority of the PLMN corresponding to the first type of network is controlled to be higher than the priority of the PLMN corresponding to the second type of network, so that the UE can select to access the PLMN corresponding to the first type of network as much as possible. Therefore, the communication efficiency and the communication quality of the UE are ensured.
Fig. 5 is a schematic structural diagram of a communication device 600 according to an embodiment of the present invention, where the communication device in this embodiment may be embodied as a network device or a terminal device in the foregoing embodiments. The communication device 600 shown in fig. 5 comprises a processor 610, and the processor 610 may call up and run a computer program from a memory to implement the method in the embodiment of the present invention.
Optionally, as shown in fig. 5, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present invention.
The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.
Optionally, as shown in fig. 5, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.
The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.
Optionally, the communication device 600 may specifically be a network device according to the embodiment of the present invention, and the communication device 600 may implement a corresponding process implemented by the network device in each method according to the embodiment of the present invention, which is not described herein again for brevity.
Optionally, the communication device 600 may specifically be a terminal device or a network device in the embodiment of the present invention, and the communication device 600 may implement a corresponding process implemented by a mobile terminal/a terminal device in each method in the embodiment of the present invention, and for brevity, details are not described here again.
Fig. 6 is a schematic structural diagram of a chip of an embodiment of the present invention. The chip 700 shown in fig. 6 comprises a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present invention.
Optionally, as shown in fig. 6, the chip 700 may further include a memory 720. From memory 720, processor 710 may invoke and execute a computer program to implement the methods of embodiments of the present invention.
The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.
Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.
Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
Optionally, the chip may be applied to the network device in the embodiment of the present invention, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present invention, and for brevity, details are not described here again.
It should be understood that the chips mentioned in the embodiments of the present invention may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.
It should be understood that the processor of embodiments of the present invention may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present invention may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.
Fig. 7 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in fig. 7, the communication system 800 includes a terminal device 810 and a network device 820.
The terminal device 810 may be configured to implement the corresponding function implemented by the UE in the foregoing method, and the network device 820 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.
The embodiment of the invention also provides a computer readable storage medium for storing the computer program.
Optionally, the computer-readable storage medium may be applied to a network device or a terminal device in the embodiment of the present invention, and the computer program enables a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present invention, which is not described herein again for brevity.
Embodiments of the present invention also provide a computer program product, which includes computer program instructions.
Optionally, the computer program product may be applied to a network device or a terminal device in the embodiment of the present invention, and the computer program instruction enables a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present invention, which is not described herein again for brevity.
The embodiment of the invention also provides a computer program.
Optionally, the computer program may be applied to the network device or the terminal device in the embodiment of the present invention, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the network device in the methods in the embodiment of the present invention, which is not described herein again for brevity.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (45)

  1. A network selection method is applied to User Equipment (UE) and comprises the following steps:
    selecting a PLMN to be accessed from the detected at least one candidate PLMN according to the priorities of at least two public land mobile network PLMNs;
    wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.
  2. The method of claim 1, wherein the method further comprises:
    determining priorities of at least two PLMNs based on a Home Public Land Mobile Network (HPLMN) and an Equivalent Home Public Land Mobile Network (EHPLMN) list;
    wherein, the PLMN included in the HPLMN is a first priority, and the PLMN included in the EHPLMN list is a second priority; the second priority is lower than the first priority.
  3. The method of claim 2, wherein the HPLMN comprises: an identification of a first PLMN corresponding to the first type of network.
  4. The method of claim 3, wherein the HPLMN associated access technology list comprises one of:
    empty set or not present;
    a first access network corresponding to a first type of network under a non-independent networking, NSA, network;
    and under the independent networking SA network, a second access network corresponding to the first type of network.
  5. The method of claim 2, wherein the EHPLMN list includes one of:
    empty or absent;
    an identification of a second PLMN corresponding to the first type of network;
    the identity of the second PLMN corresponding to the first type of network is prioritized over the identity of the third PLMN corresponding to the second type of network.
  6. The method of claim 5, wherein the method further comprises:
    determining priorities of at least two PLMNs based on a user-controlled or operator-controlled list of associated access technologies; wherein a PLMN corresponding to the user-controlled or operator-controlled associated access technology list is a third priority, and the third priority is lower than the second priority;
    wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
    the first access network or the second access network associated with the identity of the second PLMN corresponding to the first type of network has a higher priority than the first access network associated with the identity of the third PLMN corresponding to the second type of network;
    associating an identity of a third PLMN corresponding to the second type of network with the first access network;
    access technologies associated with the identities of other PLMNs; wherein the other PLMNs are PLMNs except the first PLMN, the second PLMN and the third PLMN.
  7. The method of claim 4 or 6,
    the first access network is an evolved universal terrestrial radio access network E-UTRAN;
    the second access network is a fifth generation wireless communication network radio access network NG-RAN.
  8. The method of claim 1, wherein the method further comprises:
    determining a priority of the PLMN based on the PLMN selection list of the first type of network and the PLMN selection list of the second type of network;
    wherein the PLMN selection list of the first type of network has a higher priority than the PLMN selection list of the second type of network.
  9. The method of claim 8, wherein the PLMN selection list for the first type of network comprises: an HPLMN; the HPLMN includes an identification of the first PLMN as a first sub-priority.
  10. The method of claim 9, wherein the HPLMN associated access technology list is empty or absent.
  11. The method of claim 9, wherein the PLMN selection list for the first type of network further comprises an EHPLMN list; wherein the PLMN included in the EHPLMN list is a second sub-priority; the second sub-priority is lower than the first sub-priority;
    wherein the EHPLMN list is empty or non-existent; alternatively, the EHPLMN list includes an identification of the second PLMN.
  12. The method of claim 11, wherein the PLMN selection list for the first type of network further comprises: a user-controlled or operator-controlled list of associated access technologies; the PLMN included in the user-controlled or operator-controlled list of associated access technologies is a third sub-priority; the third sub-priority is lower than the second sub-priority;
    wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
    the priority of the first access network or the second access network associated with the identification of the first PLMN is higher than that of the first access network associated with the identification of the second PLMN;
    the identification of the first PLMN is associated with the first access network.
  13. The method of claim 12, wherein,
    the first access network is an evolved universal terrestrial radio access network E-UTRAN;
    the second access network is a fifth generation wireless communication network radio access network NG-RAN.
  14. The method of claim 8, wherein the PLMN selection list for the second type of network comprises a HPLMN and a HPLMN associated access technology list;
    wherein the HPLMN comprises an identification of a first PLMN; the HPLMN associated access technology list is set to null or non-existent.
  15. The method of claim 2, wherein the HPLMN includes an identification of the first PLMN.
  16. The method of claim 15, wherein the HPLMN associated access technology list comprises:
    the identity of the first PLMN is associated with an access technology of the first type of network.
  17. The method of claim 16, wherein the EHPLMN list is set to null or non-existent.
  18. The method of claim 17, wherein the identities of PLMNs included in the EHPLMN list correspond to the same priority as the list of access technologies associated with the HPLMN.
  19. The method of claim 17, wherein the EHPLMN list is associated with an access technology list associated with the EHPLMN;
    wherein the access technology list associated with the EHPLMN includes: the identification of the second PLMN is associated with the access technology of the first type of network.
  20. The method of claim 17, wherein the method further comprises:
    using the PLMN contained in the access technology list related to operator control as a third priority; the third priority is lower than the second priority;
    wherein the operator controls a list of associated access technologies, including one of:
    the identifier of the second PLMN is associated with the access technology of the first network, the identifier of the first PLMN is associated with the access technology of the second network, and the priority of the access technology of the identifier of the second PLMN associated with the first network is higher than that of the access technology of the identifier of the first PLMN associated with the second network;
    the first PLMN identity is associated with an access technology of the second type of network.
  21. A UE, comprising:
    the processing unit is used for selecting the PLMN to be accessed from at least one detected candidate PLMN according to the priority of at least two public land mobile network PLMNs;
    wherein a priority of a PLMN corresponding to a first type of network among the priorities of the at least two PLMNs is higher than a priority of a PLMN corresponding to a second type of network; the first type of network is a newer generation or more than the second type of network.
  22. The UE of claim 21, wherein the processing unit,
    determining priorities of at least two PLMNs based on a Home Public Land Mobile Network (HPLMN) and an Equivalent Home Public Land Mobile Network (EHPLMN) list;
    wherein, the PLMN included in the HPLMN is a first priority, and the PLMN included in the EHPLMN list is a second priority; the second priority is lower than the first priority.
  23. The UE of claim 22, wherein the HPLMN comprises: an identification of a first PLMN corresponding to the first type of network.
  24. The UE of claim 23, wherein the HPLMN associated access technology list comprises one of:
    empty set or not present;
    a first access network corresponding to a first type of network under a non-independent networking, NSA, network;
    and under the independent networking SA network, a second access network corresponding to the first type of network.
  25. The UE of claim 22, wherein the EHPLMN list includes one of:
    empty or absent;
    an identification of a second PLMN corresponding to the first type of network;
    the identity of the second PLMN corresponding to the first type of network is prioritized over the identity of the third PLMN corresponding to the second type of network.
  26. The UE of claim 25, wherein the processing unit,
    determining priorities of at least two PLMNs based on a user-controlled or operator-controlled list of associated access technologies; wherein a PLMN corresponding to the user-controlled or operator-controlled associated access technology list is a third priority, and the third priority is lower than the second priority;
    wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
    the first access network or the second access network associated with the identity of the second PLMN corresponding to the first type of network has a higher priority than the first access network associated with the identity of the third PLMN corresponding to the second type of network;
    associating an identity of a third PLMN corresponding to the second type of network with the first access network;
    access technologies associated with the identities of other PLMNs; wherein the other PLMNs are PLMNs except the first PLMN, the second PLMN and the third PLMN.
  27. The UE of claim 24 or 26, wherein,
    the first access network is an evolved universal terrestrial radio access network E-UTRAN;
    the second access network is a fifth generation wireless communication network radio access network NG-RAN.
  28. The UE of claim 21, wherein the processing unit,
    determining a priority of the PLMN based on the PLMN selection list of the first type of network and the PLMN selection list of the second type of network;
    wherein the PLMN selection list of the first type of network has a higher priority than the PLMN selection list of the second type of network.
  29. The UE of claim 28, wherein the PLMN selection list for the first type of network comprises: an HPLMN; the HPLMN includes an identification of the first PLMN as a first sub-priority.
  30. The UE of claim 29, wherein the HPLMN associated access technology list is empty or non-existent.
  31. The UE of claim 29, wherein the PLMN selection list for the first type of network comprises an EHPLMN list; wherein the PLMN included in the EHPLMN list is a second sub-priority; the second sub-priority is lower than the first sub-priority;
    wherein the EHPLMN list is empty or non-existent; alternatively, the EHPLMN list includes an identification of the second PLMN.
  32. The UE of claim 31, wherein the PLMN selection list for the first type of network further comprises: a user-controlled or operator-controlled list of associated access technologies; the PLMN included in the user-controlled or operator-controlled list of associated access technologies is a third sub-priority; the third sub-priority is lower than the second sub-priority;
    wherein the user-controlled or operator-controlled list of associated access technologies comprises one of:
    the priority of the first access network or the second access network associated with the identification of the first PLMN is higher than that of the first access network associated with the identification of the second PLMN;
    the identification of the first PLMN is associated with the first access network.
  33. The UE of claim 32, wherein,
    the first access network is an evolved universal terrestrial radio access network E-UTRAN;
    the second access network is a fifth generation wireless communication network radio access network NG-RAN.
  34. The UE of claim 28, wherein the PLMN selection list for the second type of network includes a HPLMN and a HPLMN associated access technology list;
    wherein the HPLMN comprises an identification of a first PLMN; the HPLMN associated access technology list is set to null or non-existent.
  35. The UE of claim 22, wherein the HPLMN includes an identification of the first PLMN.
  36. The UE of claim 35, wherein the HPLMN associated access technology list comprises:
    the identity of the first PLMN is associated with an access technology of the first type of network.
  37. The UE of claim 36, wherein the EHPLMN list is set to null or non-existent.
  38. The UE of claim 37, wherein the identities of PLMNs included in the EHPLMN list correspond to the same priority as the access technology list associated with the HPLMN.
  39. The UE of claim 37, wherein the EHPLMN list is associated with an access technology list associated with the EHPLMN;
    wherein the access technology list associated with the EHPLMN includes: the identification of the second PLMN is associated with the access technology of the first type of network.
  40. The UE of claim 37, wherein the processing unit,
    using the PLMN contained in the access technology list related to operator control as a third priority; the third priority is lower than the second priority;
    wherein the operator controls a list of associated access technologies, including one of:
    the identifier of the second PLMN is associated with the access technology of the first network, the identifier of the first PLMN is associated with the access technology of the second network, and the priority of the access technology of the identifier of the second PLMN associated with the first network is higher than that of the access technology of the identifier of the first PLMN associated with the second network;
    the first PLMN identity is associated with an access technology of the second type of network.
  41. A UE, comprising: a processor and a memory for storing a computer program capable of running on the processor,
    wherein the memory is adapted to store a computer program and the processor is adapted to call and run the computer program stored in the memory to perform the steps of the method according to any of claims 1-20.
  42. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1-20.
  43. A computer readable storage medium for storing a computer program for causing a computer to perform the steps of the method according to any one of claims 1 to 20.
  44. A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 20.
  45. A computer program for causing a computer to perform the method of any one of claims 1-20.
CN201980094015.XA 2019-08-01 2019-08-01 Network selection method and user equipment Pending CN113574935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/098950 WO2021017015A1 (en) 2019-08-01 2019-08-01 Network selection method and user equipment

Publications (1)

Publication Number Publication Date
CN113574935A true CN113574935A (en) 2021-10-29

Family

ID=74229948

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980094015.XA Pending CN113574935A (en) 2019-08-01 2019-08-01 Network selection method and user equipment

Country Status (2)

Country Link
CN (1) CN113574935A (en)
WO (1) WO2021017015A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106465464B (en) * 2014-05-30 2020-02-28 苹果公司 Method and apparatus for supporting concurrent communication of multiple subscriber identities in a wireless communication device
CN107548122B (en) * 2016-06-28 2020-09-18 工业和信息化部电信研究院 Method and device for searching network by starting up multimode terminal
WO2018218145A1 (en) * 2017-05-26 2018-11-29 Intel IP Corporation Systems, methods and devices for selecting a public land mobile network using coverage enhancement indicators
CN109246681A (en) * 2018-10-23 2019-01-18 中国联合网络通信集团有限公司 A kind of terminal method of network entry and device

Also Published As

Publication number Publication date
WO2021017015A1 (en) 2021-02-04

Similar Documents

Publication Publication Date Title
CN111316705B (en) Method for selecting cell, terminal equipment and network equipment
CN113330779A (en) Cell selection method, terminal equipment and network equipment
CN112956242A (en) Cell selection or reselection method and device, and terminal
CN110720237B (en) Information configuration method and device, and communication equipment
CN113615314A (en) Relay selection method and device and terminal equipment
CN110972219A (en) Information processing method, terminal device, network device, and storage medium
CN113574935A (en) Network selection method and user equipment
CN112738840A (en) Method for configuring PDCCH detection and related equipment
CN112205016A (en) Terminal capability information interaction method, terminal equipment and network equipment
CN112534738A (en) Reference signal measurement configuration method, terminal equipment and network equipment
CN113498615A (en) Communication method, terminal equipment and network equipment
CN111869266A (en) Core network selection method and device, terminal equipment and network equipment
CN112385271A (en) Network information transmission method, network information acquisition method, network equipment and terminal equipment
CN111357314A (en) Method and device for maintaining neighbor relation and network equipment
CN112369061A (en) Method for configuring measurement information, terminal equipment and network equipment
US20220124521A1 (en) Method and device for information transmission
CN112470524A (en) Wireless communication method and terminal device
CN111757428B (en) Information processing method, network equipment and terminal equipment
RU2766435C1 (en) Method of determining data transmission mode along direct communication line, terminal and network device
CN114363976A (en) Wireless communication method and terminal device
CN112673687A (en) Registration method, terminal equipment and network equipment
CN113114512A (en) Policy configuration method, network equipment and terminal equipment
CN113574936A (en) Wireless communication method, terminal equipment and network equipment
CN112400338A (en) Method and device for establishing data channel and network equipment
CN112602351A (en) Method and device for controlling terminal mobility and terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination