Access technology control methods and apparatuses, terminal and network side device

Abstract

The present application belongs to the technical field of communications. Disclosed are access technology control methods and apparatuses, a terminal, and a network side device. An access technology control method of the embodiments of the present application comprises: a terminal acquires first information, the first information being used for indicating information of a radio access technology (RAT); and the terminal executes a first operation on the basis of the first information. The first operation comprises at least one of the following: disabling a first RAT, the first RAT being a RAT determined, on the basis of the first information, to be restricted; and using a second RAT, the second RAT being a disabled RAT associated with a PLMN corresponding to the terminal, but being a RAT determined, on the basis of the first information, not to be restricted.

Description

Access technology control method and device, terminal and network side equipment

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202411094351.3, filed on August 9, 2024, the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application belongs to the field of communication technology, and specifically relates to an access technology control method, device, terminal and network side equipment. BACKGROUND

[0004] A terminal often supports multiple radio access technologies (RATs), and in some related technologies, the restriction of the RAT is controlled by the core network. Thus, there is a risk that the terminal uses a restricted RAT, and when the terminal uses the restricted RAT, it is rejected by the core network. This results in the terminal being unable to use network services for a long time, and the network performance of the terminal is poor. SUMMARY

[0005] The embodiments of the present application provide an access technology control method, device, terminal and network side equipment, which can solve the problem of poor network performance of the terminal.

[0006] In a first aspect, an access technology control method is provided, comprising:

[0007] A terminal acquires first information, which is used to indicate information of a radio access technology (RAT);

[0008] The terminal performs a first operation based on the first information, and the first operation includes at least one of the following:

[0009] Disabling a first RAT, which is determined to be a restricted RAT based on the first information;

[0010] Using a second RAT, which is a disabled RAT associated with a public land mobile network (PLMN) corresponding to the terminal, but is determined to be an unrestricted RAT based on the first information.

[0011] In a second aspect, an access technology control method is provided, comprising:

[0012] A network side equipment sends first information to a terminal, which is used to indicate information of a radio access technology (RAT).

[0013] In a third aspect, an access technology control apparatus is provided, comprising:

[0014] a receiving module configured to obtain first information, the first information being used to indicate information of a radio access technology (RAT);

[0015] a processing module configured to perform a first operation based on the first information, the first operation comprising at least one of:

[0016] disabling a first RAT, the first RAT being a restricted RAT determined based on the first information;

[0017] using a second RAT, the second RAT being a disabled RAT associated with a PLMN corresponding to the terminal, but being a non-restricted RAT determined based on the first information.

[0018] In a fourth aspect, an access technology control apparatus is provided, comprising:

[0019] a sending module configured to send first information to a terminal, the first information being used to indicate information of a radio access technology (RAT).

[0020] In a fifth aspect, an access technology control apparatus is provided, the apparatus being configured to perform the steps of the access technology control method at the terminal side as provided in the embodiments herein.

[0021] In a sixth aspect, an access technology control apparatus is provided, the apparatus being configured to perform the steps of the access technology control method at the network side device as provided in the embodiments herein.

[0022] In a seventh aspect, a terminal is provided, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the access technology control method at the terminal side as provided in the embodiments herein.

[0023] In an eighth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is configured to obtain first information, the first information being used to indicate information of a radio access technology (RAT); and the processor is configured to perform a first operation based on the first information, the first operation comprising at least one of: disabling a first RAT, the first RAT being a restricted RAT determined based on the first information; and using a second RAT, the second RAT being a disabled RAT associated with a PLMN corresponding to the terminal, but being a non-restricted RAT determined based on the first information.

[0024] In a ninth aspect, a network-side device is provided, which includes a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the access technology control method of the network-side device according to the embodiments of the present application.

[0025] In a tenth aspect, a network-side device is provided, which includes a processor and a communication interface, and the communication interface is configured to send first information to a terminal, the first information being used to indicate information of a radio access technology (RAT).

[0026] In an eleventh aspect, a readable storage medium is provided, which stores programs or instructions, and the programs or instructions, when executed by a processor, implement the steps of the access technology control method of the terminal-side according to the embodiments of the present application, or implement the steps of the access technology control method of the network-side device according to the embodiments of the present application.

[0027] In a twelfth aspect, a wireless communication system is provided, which includes a terminal and a network-side device, the terminal being configured to perform the steps of the access technology control method of the terminal-side according to the embodiments of the present application, and the network-side device being configured to perform the steps of the access technology control method of the network-side device according to the embodiments of the present application.

[0028] In a thirteenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to run programs or instructions, and implement the access technology control method of the terminal-side according to the embodiments of the present application, or implement the access technology control method of the network-side device according to the embodiments of the present application.

[0029] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the access technology control method of the terminal-side according to the embodiments of the present application, or the computer program / program product is executed by at least one processor to implement the steps of the access technology control method of the network-side device according to the embodiments of the present application.

[0030] In this embodiment, the terminal obtains first information, which indicates information about a Radio Access Technology (RAT). The terminal performs a first operation based on the first information, the first operation including at least one of the following: disabling a first RAT, where the first RAT is a restricted RAT determined based on the first information; and using a second RAT, where the second RAT is a disabled RAT associated with the Public Land Mobile Network (PLMN) corresponding to the terminal, but is an unrestricted RAT determined based on the first information. Thus, since the terminal obtains the aforementioned first information, disabling the first RAT allows the terminal to disable the restricted RAT, preventing prolonged periods of network service unavailability and improving the terminal's network performance. Using the second RAT allows the terminal to use an unrestricted RAT, again preventing prolonged periods of network service unavailability and improving the terminal's network performance. Attached Figure Description

[0031] Figure 1 is a schematic diagram of a system provided in an embodiment of this application;

[0032] Figure 2 is a flowchart of an access technology control method provided in an embodiment of this application;

[0033] Figures 3 to 19 are schematic diagrams of information encoding provided in the embodiments of this application;

[0034] Figure 20 is a flowchart of another access technology control method provided in an embodiment of this application;

[0035] Figure 21 is a schematic diagram of an access technology control method provided in an embodiment of this application;

[0036] Figures 22 and 23 are schematic diagrams of information encoding provided in the embodiments of this application;

[0037] Figure 24 is a schematic diagram of an access technology control method provided in an embodiment of this application;

[0038] Figure 25 is a schematic diagram of an access technology control method provided in an embodiment of this application;

[0039] Figure 26 is a structural diagram of an access technology control device provided in an embodiment of this application;

[0040] Figure 27 is a structural diagram of another access technology control device provided in an embodiment of this application;

[0041] Figure 28 is a structural diagram of a communication device provided in an embodiment of this application;

[0042] Figure 29 is a structural diagram of a terminal provided in an embodiment of this application;

[0043] FIG. 30 is a structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0045] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally a category and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and including B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0046] The term "indication" in the present application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). The direct indication can be understood as the sender explicitly informing the receiver of the specific information, the operation to be performed or the request result, etc. in the indication sent by the sender. The indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or judging and determining the operation to be performed or the request result, etc. according to the judgment result.

[0047] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems. th

[0048] ​FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palm computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothes, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, a radio access network unit, or a satellite. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0049] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0050] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices jointly, and the embodiments of the present application do not make a limitation on this. It can be understood that the function modules described above can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0051] In some embodiments, an access stratum (AS) performs a PLMN search, in which a terminal scans all radio frequency (RF) channels one by one according to its capability to find available public land mobile network (PLMN) information. At each scanned carrier frequency, the terminal only needs to search for the cell with the strongest signal quality and read system information to confirm the PLMN to which the cell belongs (one cell can belong to one or more PLMNs). If the terminal can read one or more PLMN identities (IDs) from the cell with the strongest signal quality, the terminal needs to report each read PLMN ID to a non-access stratum (NAS). Optionally, the AS layer can also report the read PLMN ID associated RAT information to the NAS layer.

[0052] The NAS layer selects a suitable PLMN according to the following list and provides the selected PLMN and associated RAT (optionally) to the AS layer:

[0053] Home Public Land Mobile Network (HPLMN) (if the Equivalent Home PLMN (EHPLMN) list does not exist or is empty) or the highest priority EHPLMN available (if the EHPLMN list exists);

[0054] Each PLMN / access technology combination (in priority order) in the "User Controlled PLMN Selector with Access Technology" data file in the Subscriber Identity Module (SIM) "User Controlled PLMN Selector with Access Technology";

[0055] Each PLMN / access technology combination in the "Operator Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order) or stored in the Mobile Equipment (ME) (in priority order);

[0056] Other PLMN / access technology combinations of received high quality signals arranged in random order;

[0057] Other PLMN / access technology combinations arranged in order of decreasing signal quality.

[0058] Any forbidden PLMN / NG-RAN combination that meets the following conditions:

[0059] PLMN / NG-RAN combinations for other forbidden PLMNs arranged in random order.

[0060] Once the terminal has selected a PLMN, it needs to perform a cell selection procedure. If the associated RAT for the selected PLMN is set, the AS layer searches within the associated RAT and within other RATs until a suitable cell corresponding to the selected PLMN is found to camp on.

[0061] Access technology here is used to identify a radio carrier type, such as Global System for Mobile Communications (GSM), Universal Terrestrial Radio Access Network (UTRAN), GSM COMPACT, Extended coverage GSM IoT (EC-GSM-IoT), Code Division Multiple Access (cdma)2000 1xRTT, cdma2000 HRPD, evolved UTRAN (E-UTRAN), NG-RAN, satellite NG-RAN, satellite E-UTRAN.

[0062] The HPLMN can provide a terminal with a policy, i.e., an operator-controlled PLMN selector list containing access technologies, through a Steering of Roaming (SOR) procedure, to guide the terminal in an automatic network search mode to search for a higher priority visited PLMN (VPLMN).

[0063] The access technology control method, device, terminal and network-side device provided by the embodiments of the present application are described in detail below in combination with the drawings and some embodiments and application scenarios.

[0064] Please refer to FIG. 2, which is a flowchart of an access technology control method provided by the embodiments of the present application, as shown in FIG. 2, including the following steps:

[0065] Step 201: The terminal acquires first information, which is information for indicating RAT.

[0066] The terminal acquires the first information can be that the terminal receives first information sent by a network-side device, which can be a terminal or a core network device.

[0067] The RAT information indicated by the first information can be RAT restriction information or allowed information, or the RAT information indicated by the first information can be information for controlling RAT, such as information for indicating specific access technologies controlled by an operator within a PLMN.

[0068] Step 202: The terminal performs a first operation based on the first information, and the first operation includes at least one of the following:

[0069] Disabling a first RAT, which is a RAT determined to be restricted based on the first information;

[0070] Using a second RAT, which is a disabled RAT associated with a PLMN corresponding to the terminal, but a RAT determined not to be restricted based on the first information.

[0071] The first RAT is one or more RATs determined to be restricted based on the first information.

[0072] The RAT determined to be restricted based on the first information can be a RAT explicitly or implicitly indicated by the first information.

[0073] The restricted RAT can be understood as a RAT not allowed to be used.

[0074] The disabling of the first RAT can be understood as disabling the first RAT capability or avoiding using the first RAT or not using the first RAT, and the disabling can also be described as de-enabling.

[0075] The second RAT can be a disabled RAT associated with a PLMN corresponding to the terminal, but the RAT determined as not being limited based on the first information can be understood as that the disabled RAT associated with the PLMN includes the second RAT, but the first information explicitly or implicitly indicates that the RAT is not limited or allowed to be used, i.e., the second RAT is changed from being disabled to not being limited or allowed to be used by the first information. For example, the terminal receives a RAT list corresponding to the first information, which is a limited list, and the second RAT is not in the limited list, or the terminal receives a RAT list corresponding to the first information, which is an allowed list, and the second RAT is in the allowed list.

[0076] The PLMN corresponding to the terminal can be a current PLMN of the terminal, wherein the current PLMN of the terminal can be a serving PLMN of the terminal or a PLMN selected by the terminal when performing the first operation. Alternatively, the PLMN corresponding to the terminal can be a PLMN in the list of disabled PLMNs associated with the second RAT.

[0077] The second RAT can be one or more RATs.

[0078] The use of the second RAT can be understood as using the second RAT capability, or can be understood as enabling the second RAT / second RAT capability, or can be understood as re-enabling the second RAT / second RAT capability, and the enabling can also be described as enabling.

[0079] In some embodiments, after the terminal obtains the first information, the terminal can further perform at least one of the following:

[0080] If the first information is obtained by the terminal in a home PLMN or an equivalent PLMN of the home PLMN, the terminal replaces the first information stored at the terminal with the obtained first information;

[0081] If the first information is received by the terminal in a visited PLMN and the first information includes a first RAT list corresponding to the current PLMN, the terminal replaces the first information corresponding to the current PLMN stored at the terminal with the obtained first information;

[0082] If the first information is received by the terminal within a visited PLMN and the first information does not contain the first RAT list corresponding to the current PLMN, the terminal deletes the first RAT list corresponding to the current PLMN from the first information stored at the terminal.

[0083] In this embodiment, since the terminal obtains the aforementioned first information, disabling the first RAT can disable the restricted RAT, thus preventing the terminal from being unable to use network services for an extended period of time, thereby improving the terminal's network performance. By using the aforementioned second RAT, the terminal can use an unrestricted RAT, thus preventing the terminal from being unable to use network services for an extended period of time, thereby improving the terminal's network performance.

[0084] In some implementations, by instructing the operator to control the use of specific access technologies within the PLMN in accordance with the aforementioned first information, the operator can control the use of specific access technology combinations within the PLMN, thereby achieving a gain in ensuring the service experience of the terminal.

[0085] As an optional implementation, the first RAT, which determines the restricted RAT based on the first information, includes at least one of the following:

[0086] If the first RAT list indicated by the first information is a restriction list, then the first RAT is in the restriction list;

[0087] If the first RAT list indicated by the first information is an allowed list, then the first RAT is not in the allowed list.

[0088] The first RAT list mentioned above may be one or more RAT lists, and the first RAT list indicated by the first information may be one or more RAT lists included in the first information, or one or more RAT lists in other information indicated by the first information, such as the RAT list stored in the terminal indicated by the first information.

[0089] In this embodiment of the application, each RAT list may include one or more RATs. Wherein, if the RAT list is a restricted list, it means that the RATs in the RAT list are restricted RATs. If the RAT list is a permitted list, it means that the RATs in the RAT list are unrestricted or permitted RATs.

[0090] In the case that the first RAT list includes a plurality of RAT lists, the first RAT in the restriction list can be understood as the first RAT in the restriction list in the plurality of RAT lists, and the first RAT not in the allowed list can be understood as the first RAT not in the allowed list in the plurality of RAT lists, i.e., the plurality of RAT lists can include at least one of the restriction list and the allowed list.

[0091] The first RAT list can include at least one of the following:

[0092] A RAT restriction list (or a restricted RAT list), a list of RATs not allowed to use, and a list of RATs allowed to use.

[0093] The restriction list indicates that the RATs in the list are restricted, and the allowed list indicates that the RATs in the list are not restricted or allowed to use.

[0094] The first RAT can be restricted by the restriction list and the allowed list to disable the first RAT.

[0095] As an optional implementation, the determining of the RAT not restricted based on the first information includes at least one of the following:

[0096] In the case that the first RAT list indicated by the first information is a restriction list, the RAT is not in the restriction list.

[0097] In the case that the first RAT list indicated by the first information is an allowed list, the first RAT is in the allowed list.

[0098] The second RAT can be used by the terminal through the restriction list and the allowed list.

[0099] As an optional implementation, the first information includes at least one of the following:

[0100] First indication information, the first indication information is used to indicate that the restricted RAT is applicable to the current PLMN or all PLMNs of the terminal;

[0101] Second indication information, the second indication information is used to indicate the number of PLMNs;

[0102] Third indication information, the third indication information is used to indicate the type of the first RAT list;

[0103] Fourth indication information, the fourth indication information is used to indicate that the RAT in the first RAT list is allowed to use or restricted;

[0104] Fifth indication information, used for indicating valid information of a RAT in the first RAT list;

[0105] Sixth indication information, used for indicating a value of a timer enabled when the RAT is disabled;

[0106] The first RAT list;

[0107] Information of a PLMN associated with the first RAT list;

[0108] Seventh indication information, used for indicating whether at least one RAT is restricted;

[0109] Eighth indication information, used for indicating whether at least one RAT is associated with valid information;

[0110] Valid information of the at least one RAT;

[0111] Ninth indication information, used for indicating a RAT associated with the valid information.

[0112] The first indication information can be indicated in a granularity of a RAT or in a granularity of a RAT list, for example: the first indication information can be used to indicate that the first RAT list is applicable to a current PLMN of the terminal or all PLMNs, such as the first RAT list being a restriction list. Wherein, in the case of being applicable to the current PLMN, the first indication information can indicate at least one of the following:

[0113] The first RAT list is applicable to a current PLMN of the terminal or a currently registered PLMN;

[0114] The first RAT is applicable to all tracking areas of the current PLMN of the terminal.

[0115] The current PLMN of the terminal can be a serving PLMN of the terminal, or a PLMN selected by the terminal when performing the first operation.

[0116] All PLMNs can be all available PLMNs.

[0117] The first indication information can be used to control the RATs more finely to improve the control effect of the RATs. For example, the first information can be encoded as shown in FIG. 3. The first information includes the first indication information and a plurality of RATs, which are used to indicate the PLMNs to which the plurality of RATs are applicable. In FIG. 3, the first information further includes a restricted RAT (RAT) information element identifier (IEI) and the length of the restricted RAT contents. The first indication information can indicate that the PLMNs to which the plurality of RATs are applicable are one or more. When one PLMN is indicated, the first information is applicable to the current PLMN or the currently registered PLMN, or is applicable to all tracking areas of the current PLMN, for example, the RATs are restricted or not restricted only in all tracking areas of the PLMN.

[0118] The second indication information can be used to indicate the number of PLMNs to which the first information is applicable. When one PLMN is indicated, the first information is applicable to the current PLMN or the currently registered PLMN, or is applicable to all tracking areas of the current PLMN, for example, the RATs are restricted or not restricted only in all tracking areas of the PLMN.

[0119] The second indication information can be used to indicate the number of PLMNs to which the first information is applicable or the PLMNs to which the first information is applicable, to improve the control effect of the RATs.

[0120] The third indication information can be used to indicate the type of the first RAT list, which can include at least one of the following:

[0121] The first RAT list associated with a plurality of RATs in one PLMN, the first RAT list associated with one RAT in one PLMN, the first RAT list associated with one / multiple RATs in a plurality of different PLMNs, and the first RAT list associated with all available PLMNs in one or more RATs.

[0122] The third indication information can be used to support a plurality of types of first RAT lists, to make the control of the RATs more flexible.

[0123] The fourth indication information can be used to indicate whether the RATs in the first RAT list are allowed to be used or restricted. For example, the fourth indication information can be used to indicate at least one of the following:

[0124] A restricted RAT list, a non-allowed RAT list, and an allowed RAT list.

[0125] The fourth indication information can support the first information corresponding to multiple different RAT lists, so that the RAT control is more flexible.

[0126] The fifth indication information can be used to indicate the valid information of the RATs in the first RAT list, and the valid information of the RATs in the same RAT list is the same.

[0127] The fifth indication information can be used to implement more accurate control of the RATs.

[0128] In some embodiments, the encoding mode of the first information is as shown in FIGS. 4, 5, 6, and 7, including the allowed type, the list type, and the number of elements (i.e., the number of PLMNs indicated by the second indication information), and the fourth indication information, the third indication information, and the second indication information, and the fifth indication information can also be included.

[0129] In some embodiments, the valid information in the embodiments of the present application can include at least one of the following:

[0130] Time valid information, location valid information, and service valid information.

[0131] The time valid information is used to indicate a valid time, which can be a start time and an end time, a start time and a duration, only a start time, meaning that after the start time, the corresponding RAT list is always allowed or always not allowed, or a value (such as infinity, meaning that the corresponding RAT list is always allowed or always not allowed).

[0132] The location valid information is used to indicate a valid location, which can be a tracking area, a cell, a geographical location, or latitude and longitude, etc. For example, in the Antarctic region, NR_Low Earth Orbit (LEO), NR_Medium Earth Orbit (MEO), and NR_Geostationary Orbit (GEO) access technologies are allowed to access, and in the urban area, NR_LEO, NR_MEO, and NR_GEO access technologies are not allowed to access.

[0133] The service valid information is used to indicate a valid service, which can be a data network name (DNN), single network slice selection assistance information (S-NSSAI) APP ID, IP multimedia system voice (IMS voice), etc. For example, when a video application a is used, the NR_LEO, NR_MEO, and NR_GEO access technologies are not allowed to access.

[0134] The time valid information, the location valid information, and the service valid information can be used to implement more precise RAT control, so as to improve the RAT control effect.

[0135] The sixth indication information is used to indicate the value of the timer that is started when a RAT is disabled, and the value indicates the duration of the timer that is started when a RAT is disabled. In this way, the control of disabling a RAT for a specific duration can be implemented, so as to avoid disabling a RAT all the time, and the network performance of the terminal can be improved.

[0136] The first information including the first RAT list can be understood as the first information including one or more RAT lists. Since the first RAT list is directly included in the first information, the terminal can avoid obtaining the first RAT list through other information, so as to save the transmission overhead of the terminal.

[0137] In some embodiments, the first RAT list can be a RAT utilization restriction list, and the encoding mode of the first information is shown in FIGS. 8 and 9. The first information includes a plurality of RAT utilization restriction lists, and further includes a RAT utilization restriction information IEI and the length of the RAT utilization restriction information contents. The length of the RAT utilization restriction information contents field is used to indicate the length of the RAT utilization restriction information contents. If the length field is 0, it means that the RAT utilization restriction information is empty, that is, there is no RAT utilization restriction list. The terminal can replace the RAT utilization restriction information stored at the terminal with the received RAT utilization restriction information. If the length field of the RAT utilization restriction information is 0, it means that the network does not control the RAT utilization.

[0138] The information of the PLMN associated with the first RAT list can be understood as the PLMN information to which the first RAT list is applicable, such as a PLMN ID.

[0139] The information of the PLMN associated with the first RAT list can realize the combined control of the RAT and the PLMN, so as to improve the control effect of the RAT.

[0140] The seventh indication information for indicating whether at least one RAT is limited can be understood as indicating whether to limit in the granularity of the RAT, that is, indicating whether to prohibit or disable in the granularity of the RAT, so as to improve the control effect of the RAT.

[0141] The eighth indication information for indicating whether at least one RAT is associated with valid information can be understood as indicating whether to associate valid information in the granularity of the RAT, so as to improve the control effect of the RAT.

[0142] In some embodiments, the above-mentioned valid information can also be understood as additional information. For example, the encoding mode of the first information can be as shown in FIG. 10, including the following contents:

[0143] An NG-RAN associated additional information list indicator (NAILI) field is used to indicate whether the NG-RAN associated additional information list exists;

[0144] An E-UTRAN associated additional information list indicator (EAILI) field is used to indicate whether the E-UTRAN associated additional information list exists;

[0145] A UTRAN associated additional information list indicator (UAILI) field is used to indicate whether the UTRAN associated additional information list exists;

[0146] A GERAN associated additional information list indicator (GAILI) field is used to indicate whether the GERAN associated additional information list exists.

[0147] For another example, the encoding mode of the first information can be as shown in FIG. 11, FIG. 12, FIG. 13 and FIG. 14, respectively including NAIL content length and position valid information, EAIL content length and position valid information, UAIL content length and position valid information, and GAIL content length and position valid information, wherein the NAIL field in FIG. 11, FIG. 12, FIG. 13 and FIG. 14 is used to carry a list of additional information associated with NG-RAN, the EAIL field is used to carry a list of additional information associated with E-UTRAN, the UAIL field is used to carry a list of additional information associated with UTRAN, and the GAIL field is used to carry a list of additional information associated with GERAN.

[0148] For another example, the encoding mode of the first information can be as shown in FIG. 15 and FIG. 16, including a length of a RAT utilization restriction list content and a list of additional information associated with a restricted RAT, the list of additional information associated with the restricted RAT including a plurality of additional information associated with the restricted RAT, and the length of the RAT utilization restriction list content being used to indicate the length of the RAT utilization restriction list content.

[0149] For another example, the encoding mode of the first information can be as shown in FIG. 17, including a length of additional information associated with a restricted RAT and position valid information.

[0150] For another example, the encoding mode of the first information can be as shown in FIG. 18 and FIG. 19, the position valid information can include a list of tracking area codes (TACs), and the list of TACs including a number of TACs and a plurality of TACs.

[0151] It should be noted that FIG. 3 to FIG. 19 are only examples of encoding of the first information, and the encoding mode of the first information is not limited in the embodiments of the present application.

[0152] In addition, only NR, E-UTRA, UTRA and GSM are taken as examples in the above figures, and the RAT in the embodiments of the present application includes at least one of the following, but is not limited thereto:

[0153] NR, EUTRA, WLAN, VIRTUAL, Narrow Band Internet of Things (NB-IoT), WIRELINE, WIRELINE_CABLE, WIRELINE_Broadband Forum access (WIRELINE_BBF), Long Term Evolution for Machines (LTE-M), New Radio Unlicensed (NR_U), EUTRA Unlicensed (EUTRA_U), Trusted Non-3GPP access (TRUSTED_N3GA), Trusted WLAN (TRUSTED_WLAN), UTRA, GSM / Enhanced Data Rate for GSM Evolution (EDGE) Radio Access Network (GERA), NR_Low Earth Orbit (LEO), NR_Medium Earth Orbit (MEO), NR_Geostationary Orbit (GEO), NR_OTHER_SAT, NR_Reduced capability (NR_REDCAP), WB_E_UTRAN_L EO, WB_E_UTRAN_MEO, WB_E_UTRAN_GEO, WB_E_UTRAN_OTHERSAT, NB_IOT_L EO, NB_IOT_MEO, NB_IOT_GEO, NB_IOT_OTHERSAT, LTE_M_L EO, LTE_M_MEO, LTE_M_GEO, LTE_M_OTHERSA, NR_EREDCAP.

[0154] The valid information of the at least one RAT can be understood as the valid information of the at least one RAT directly indicated in the first information, so as to realize more accurate control on the at least one RAT, wherein the RAT corresponding to the valid information can be indicated by the ninth indication information, that is, the valid information and the associated RAT are respectively indicated by different information, or the ninth indication information is not needed, and the valid information is directly bound with the corresponding RAT.

[0155] The ninth indication information is used for indicating the RAT associated with the valid information. The ninth indication information indicates the RAT associated with the valid information corresponding to the first information. For example, the first information includes valid information of at least one RAT, and the ninth indication information is used for indicating the specific associated RAT. For example, the valid information is associated with at least one of the following: NG-RAN, E-UTRAN, UTRAN, and GERAN.

[0156] The ninth indication information can be used to implement RAT association specific to valid information, so as to implement more accurate RAT control.

[0157] It should be noted that in the embodiments of the present application, the first information can be used to make the terminal determine at least one of the restricted RAT and the non-restricted RAT, in the case that the first information includes any one or any multiple of the above multiple items. For example, the first RAT list in the first information is a restriction list or an allowed list by default, or the first information does not include the first RAT list, and the first RAT list is a RAT list stored by the terminal when the first information is acquired, or the valid information is preconfigured, or the association relationship between the RATs applicable to the PLMNs is preconfigured, or the value of the timer enabled when the RAT is disabled is default, or the valid information associated with each RAT is default, and the like, which are not exemplified one by one here.

[0158] In addition, in the case that the first information includes multiple items, the multiple items can be located in the same information element or different information elements.

[0159] Optionally, the disabling of the first RAT includes at least one of the following:

[0160] In the case that the fourth indication information indicates that the RAT in the first RAT list is restricted, the first RAT is disabled, and the first RAT list includes the first RAT.

[0161] In the case that the first RAT list includes the first RAT, the first RAT is disabled.

[0162] In the case that the seventh indication information indicates that the first RAT is forbidden, the first RAT is disabled.

[0163] In the case that the current time is within the valid time indicated by the time valid information associated with the first RAT, the first RAT is disabled.

[0164] In the case that the current location of the terminal is within the valid location indicated by the location valid information associated with the first RAT, the first RAT is disabled.

[0165] disable the first RAT in a case that the service type expected to be used by the terminal or the service type being used is within the valid service indicated by the service valid information associated with the first RAT;

[0166] The first RAT is a RAT currently used by the terminal.

[0167] The current time can be a time for determining whether to disable the first RAT, and specifically can be a time for performing the first operation.

[0168] The current location can be a location for determining whether to disable the first RAT, and specifically can be a location where the terminal is located when performing the first operation.

[0169] In a case that the first RAT list includes the first RAT, disabling the first RAT can be disabling the first RAT in a case that the first RAT list is a restriction list and includes the first RAT.

[0170] In this embodiment, the first RAT can be disabled in multiple cases to meet the requirements of more scenarios or services.

[0171] The time valid information, the location valid information, and the service valid information can be understood as valid conditions for restricting the first RAT.

[0172] In addition, the time valid information, the location valid information, and the service valid information can also be used to determine the RATs that are not restricted. For example, in a case that the fourth indication information is used to indicate that the access technologies in the first RAT list are not allowed to access, the first RAT can be used in a case that the current time is not within the valid time indicated by the time valid information associated with the first RAT; the first RAT can be used in a case that the current location of the terminal is not within the valid location indicated by the location valid information associated with the first RAT; and the first RAT can be used in a case that the service type expected to be used by the terminal is not within the valid service indicated by the service valid information associated with the first RAT.

[0173] In some embodiments, the service type expected to be used by the terminal can be a service type currently used by the terminal.

[0174] It should be noted that the embodiments of the present application do not limit the disabling of the first RAT to the above multiple cases. For example, the first RAT can also be disabled in a case that the RAT list received by the terminal is a restriction list and the first RAT is in the restriction list, or in a case that the RAT list received by the terminal is an allowed list and the first RAT is not in the allowed list.

[0175] Optionally, the using the second RAT comprises at least one of:

[0176] using the second RAT in a case that the fourth indication information indicates that a RAT in the first RAT list is allowed to be used, the first RAT list comprising the second RAT;

[0177] using the second RAT in a case that the first RAT list does not comprise the second RAT;

[0178] using the second RAT in a case that the seventh indication information indicates that the second RAT is not forbidden;

[0179] using the second RAT in a case that a current time is within a valid time indicated by time valid information associated with the second RAT;

[0180] using the second RAT in a case that a current location of the terminal is within a valid location indicated by location valid information associated with the second RAT;

[0181] using the second RAT in a case that a service type expected to be used by the terminal is within a valid service indicated by service valid information associated with the first RAT;

[0182] using the second RAT in a case that a timer associated with the second RAT expires, the timer being enabled when the second RAT is disabled.

[0183] The above using the second RAT in a case that the first RAT list does not comprise the second RAT can be using the second RAT in a case that the first RAT list is a restricted list and does not comprise the second RAT.

[0184] The above time valid information, location valid information and service valid information can be understood as valid conditions under which the second RAT is allowed or not restricted.

[0185] In addition, the above time valid information, location valid information and service valid information can also be used to determine a restricted RAT, for example, in a case that the fourth indication information is used to indicate that an access technology in the first RAT list is allowed to access, the terminal can disable the second RAT in a case that a current time is not within a valid time indicated by time valid information associated with the second RAT; the terminal can disable the second RAT in a case that a current location of the terminal is not within a valid location indicated by location valid information associated with the second RAT; the terminal can disable the second RAT in a case that a service type expected to be used by the terminal is not within a valid service indicated by service valid information associated with the first RAT.

[0186] In this embodiment, the second RAT can be used in multiple cases to meet the requirements of more scenarios or services.

[0187] It should be noted that the embodiments of the present application are not limited to the above multiple cases, and the second RAT can also be used in other cases, for example, the RAT list received by the terminal is a limited list, the second RAT is not in the limited list, the second RAT is used, or the RAT list received by the terminal is an allowed list, the second RAT is in the allowed list, and the second RAT is used.

[0188] As an optional embodiment, when the first RAT is disabled, the method further comprises at least one of the following:

[0189] The terminal provides the first RAT list or the first RAT to an access stratum (AS);

[0190] When the terminal enters a no-cell-available state (NO-CELL-AVAILABLE state), the terminal performs network selection based on the first information, wherein a first combination is not selected, and the first combination is a combination of a limited RAT and a PLMN.

[0191] The terminal stores the disabled PLMN information associated with the limited RAT.

[0192] A timer is started when the first RAT is disabled.

[0193] When the terminal provides the first RAT to the AS, the AS can report available PLMNs and RATs associated with the available PLMNs to the NAS layer, wherein the associated RATs do not belong to the first RAT.

[0194] The first RAT provided by the terminal to the AS can include one or more disabled RATs.

[0195] Since the first RAT list is provided to the AS layer, the AS can directly perform cell selection or reselection based on the RAT in subsequent communication to improve the network performance of the terminal.

[0196] The limited RAT is a RAT that is not allowed to be used or a disabled RAT.

[0197] The above-noted first combination can include:

[0198] The NAS layer sets an associated RAT for each PLMN, wherein the associated RAT is not a limited RAT or a RAT allowed to be used; or

[0199] The NAS layer provides the selected PLMN and the associated RAT to the AS layer, wherein the associated RAT is not the restricted RAT or the allowed RAT.

[0200] The network selection is not performed based on the first information, so that the combination of the RAT and the PLMN is controlled, and the control effect of the RAT is improved.

[0201] The terminal stores the disabled PLMN information associated with the disabled RAT, which can be a disabled PLMN identifier associated with the disabled RAT, so that the disabled PLMN is not selected for the RAT in a subsequent network selection process, and the control effect of the RAT is improved. For example, the terminal UE maintains a forbidden access technology list with the PLMN as the granularity, or maintains a list with the disabled RAT as the granularity, that is, the list includes a list of disabled PLNNs associated with the RAT.

[0202] The timer is started when the first RAT is disabled, and the value of the timer can be indicated by the first information, preconfigured, or agreed by a protocol, so that the first RAT is not always disabled, and the network performance of the terminal is improved.

[0203] As an optional implementation, in the case of using the second RAT, the method further includes at least one of the following:

[0204] The terminal updates the first information;

[0205] The terminal provides the updated first RAT list to the AS, and the updated first RAT list indicates that the second RAT is allowed to be used;

[0206] The terminal performs cell reselection according to the updated first information;

[0207] The terminal performs network selection using the updated first information, wherein the first combination of the restricted RAT and the PLMN is not selected;

[0208] In the case that the terminal enters a no-cell-available state, the terminal performs network selection based on the updated first information, wherein the second combination of the second RAT and the PLMN is allowed to be selected;

[0209] The terminal sets the current PLMN of the terminal as the allowed access PLMN;

[0210] The updated first information indicates that the second RAT is allowed to be used.

[0211] By updating the first information, the second RAT can be changed from being restricted to being allowed to use, so that the terminal can use the second RAT subsequently, thereby improving the network performance of the terminal.

[0212] Since the updated first RAT list is provided to the AS, the AS of the terminal can use the second RAT subsequently, thereby improving the network performance of the terminal.

[0213] Since the terminal performs cell reselection according to the updated first information, the terminal can perform cell reselection using the second RAT subsequently, thereby improving the network performance of the terminal.

[0214] The network selection is not performed on the first combination based on the first information, so that the control on the combination of the RAT and the PLMN can be implemented, thereby improving the control effect of the RAT. The terminal performs PLMN selection using the updated first information, and the first combination is not selected.

[0215] Since the terminal is allowed to select the second combination when performing network selection based on the updated first information, the network performance of the terminal can be improved.

[0216] The terminal sets the current PLMN of the terminal as the PLMN allowed to be accessed, which can be because the second RAT is allowed to use, so that the current PLMN can be set as the PLMN allowed to be accessed, and the terminal can select the PLMN when performing network selection, thereby improving the network performance of the terminal.

[0217] Optionally, the terminal sets the current PLMN of the terminal as the PLMN allowed to be accessed, including at least one of the following:

[0218] The terminal removes the current PLMN of the terminal from the list of disabled PLMNs associated with the second RAT.

[0219] The terminal removes the second RAT from the list of disabled RATs associated with the current PLMN of the terminal.

[0220] In this embodiment, two ways of setting the current PLMN as the PLMN allowed to be accessed can be implemented, thereby supporting the terminal to control the RAT flexibly.

[0221] As an optional embodiment, the method further includes:

[0222] The terminal sends capability information to the network side device, and the capability information is used to indicate that the terminal supports the operator to control the RAT in the PLMN.

[0223] The capability information is used to indicate that the terminal supports the operator controlling the RAT within the PLMN, which can be understood as that the terminal supports performing the first operation based on the first information.

[0224] By sending the capability information, the network-side device can send the first information to the terminal, so as to implement the operator controlling the RAT within the PLMN, thereby obtaining the gain of guaranteeing the service experience of the terminal.

[0225] In some embodiments, the capability information can also not be sent, for example, the terminal supports the capability by default.

[0226] In the embodiments of the present application, the terminal obtains first information, and the first information is information for indicating a RAT; and the terminal performs a first operation based on the first information, and the first operation includes at least one of the following: disabling a first RAT, the first RAT being a RAT that is determined to be limited based on the first information; and using a second RAT, the second RAT being a disabled RAT associated with a public land mobile network (PLMN) corresponding to the terminal, but being a RAT that is determined not to be limited based on the first information. Since the terminal obtains the first information, the terminal can disable the limited RAT by disabling the first RAT, thereby avoiding a situation that the terminal cannot use network services for a long time, and improving the network performance of the terminal. By using the second RAT, the terminal can use the RAT that is not limited, thereby avoiding a situation that the terminal cannot use network services for a long time, and improving the network performance of the terminal.

[0227] Please refer to FIG. 20, which is a flowchart of another access technology control method according to an embodiment of the present application. As shown in FIG. 20, the method includes the following steps:

[0228] In step 2001, a network-side device sends first information to a terminal, and the first information is information for indicating a radio access technology (RAT).

[0229] Optionally, the first information includes at least one of the following:

[0230] First indication information, the first indication information being used to indicate that a limited RAT is applicable to a current PLMN of the terminal or all PLMNs;

[0231] Second indication information, the second indication information being used to indicate a number of PLMNs;

[0232] Third indication information, the third indication information being used to indicate a type of a first RAT list;

[0233] Fourth indication information, the fourth indication information being used to indicate that a RAT in the first RAT list is allowed to be used or limited;

[0234] fifth indication information, used for indicating valid information of a RAT in the first RAT list;

[0235] sixth indication information, used for indicating a value of a timer enabled when a RAT is disabled;

[0236] a first RAT list;

[0237] information of a PLMN associated with the first RAT list;

[0238] seventh indication information, used for indicating whether at least one RAT is restricted;

[0239] eighth indication information, used for indicating whether at least one RAT is associated with valid information;

[0240] valid information of at least one RAT;

[0241] ninth indication information, used for indicating a RAT associated with valid information.

[0242] Optionally, the valid information comprises at least one of the following:

[0243] time valid information, location valid information, service valid information.

[0244] Optionally, the first RAT list comprises at least one of the following:

[0245] a RAT restriction list, a list of RATs not allowed to use, a list of RATs allowed to use.

[0246] Optionally, the method further comprises:

[0247] the network side device receives capability information sent by the terminal, the capability information being used for indicating that the terminal supports that an operator controls a RAT within a PLMN.

[0248] It should be noted that the embodiment is an implementation of a corresponding network side device in the embodiment shown in FIG. 2, and the specific implementation can be referred to the related description of the embodiment shown in FIG. 2. To avoid repeated description, the embodiment will not be described herein.

[0249] The following embodiments are examples of the method provided by the embodiments of the present application:

[0250] Embodiment one:

[0251] This embodiment mainly describes sending of HPLMN control first information, and the first information is RAT restriction information (RAT restriction information).

[0252] In this embodiment, the terminal obtains the first information (RAT restriction information) from the home network, performs cell reselection or network selection according to the first information, and avoids selecting a restricted RAT, thereby solving the problem that the operator can control the use of a specific access technology combination within the PLMN, and achieving the gain of guaranteeing the service experience of the terminal.

[0253] The corresponding signaling flow is shown in FIG. 21 as follows, including the following steps:

[0254] Step 1. The terminal initiates a registration request to the AMF, containing the terminal identifier.

[0255] Optionally, the terminal includes capability information, such as a first capability indication, in the registration request, indicating that the terminal supports a first feature, and the first feature is used by the operator to control the use of a specific access technology within the PLMN.

[0256] Optionally, the first feature can be at least one of the following:

[0257] RAT restriction, enhancement of controlling RAT utilization, extended RAT restriction, and restricted RAT.

[0258] Optionally, the first capability indication can be included in the existing 5GC mobility management IE (5GMM capability IE), or it can be an independent IE.

[0259] Step 2a. The AMF (i.e., the network side device in the above embodiment) sends an Nudm_SDM_Get message to the UDM to obtain the subscription information of the terminal, containing the terminal identifier.

[0260] Step 2b. The AMF sends an Nudm_UECM_Registration message to the UDM to store the terminal context (UE context) management information on the AMF side to the UDM to obtain the subscription information of the terminal, containing the terminal identifier.

[0261] Optionally, the AMF includes the first capability indication.

[0262] Step 3. The UDM sends a response message containing the first information or updated first information, which is used to indicate the restricted RAT list or the serving RAT list (serving RAT) that is allowed to access or not allowed to access of the terminal, i.e. the first RAT list mentioned above.

[0263] Through the above steps, the terminal subscription information can be enhanced, so that the home network operator and the roaming network operator have a roaming agreement, the control by the HPLMN is more reasonable, the terminal subscription can be updated with the update of the roaming agreement, and the signaling interaction between the terminal and the network can be reduced. The terminal can obtain the RAT restriction of multiple PLMNs from the HPLMN, which can not only perform RAT restriction in the current serving PLMN, but also perform RAT restriction in the next network selection.

[0264] The following are two ways to change the terminal subscription, which have the same effect, but are carried in different attributes:

[0265] Step 3a. The UDM provides the terminal with access and mobility subscription data.

[0266] The access and mobility subscription data is the terminal subscription data, and the following is to enhance the access and mobility subscription data. If the home network operator of the terminal and the roaming network operator have a roaming agreement of RAT restriction, the following at least one can be reflected in the subscription data of the terminal:

[0267] Method one, extend the RAT restrictions attribute, which is used to indicate the restricted RAT type list of the terminal, which can be shown in Table 1 as follows:

[0268] Table 1: Definition of type Access And Mobility Subscription Data

[0269] Method two, add an extended RAT restrictions attribute, which is used to indicate the restricted RAT type list of the terminal, which is shown in Table 2 as follows:

[0270] Table 2:

[0271] The advantage of adding the extended RAT restrictions attribute is that the new attribute has a different effect, which is convenient for the AMF to process after receiving it.

[0272] The third way is to add a PLMN RAT Restriction attribute to indicate the list of restricted RAT types in the PLMN, as shown in Table 3 and Table 4:

[0273] Table 3:

[0274] Table 4:

[0275] The fourth way is to add a RAT restriction information / serving RAT information (RAT restriction Info / serving RAT Info) attribute to indicate the list of restricted RATs or the list of serving RATs allowed to access or not allowed to access in the plurality of PLMNs, as shown in Table 5.

[0276] Table 5:

[0277] Step 3b. The UDM provides the UE with Steering of Roaming (SOR) information, that is, adds first information in the SOR information.

[0278] Specifically, the SOR information can be enhanced, including at least one of the following:

[0279] The first way is to enhance the steering container (steeringContainer) attribute in the SOR information (SorInfo) to indicate that the list of "Operator Controlled PLMN Selector with Access Technology" should not include the combination of PLMN and restricted access technology.

[0280] A SOR restriction information (SOR-RAT restriction Info) attribute is added to indicate the list of restricted RAT types in the plurality of PLMNs, as shown in Table 6.

[0281] Table 6:

[0282] The above response message can be a Nudm_SDM_Get response message or a Nudm_UECM_Registration response message.

[0283] Step 4. The AMF sends the first information to the terminal, for indicating the restricted RAT list or the allowed access / not allowed access serving RAT list of the terminal, containing at least one of the following first information element, second information element and third information element:

[0284] The first information element is used for indicating the restricted RAT list of the terminal, containing at least one of the following:

[0285] The first indication information (also can be called the first indication field) is used for indicating whether the restricted RAT is applied to the current PLMN or applied to all available PLMNs;

[0286] The fourth indication information (specifically, an access technology indication field) is used for indicating whether the corresponding access technology is restricted, and bit 0 is used for indicating that the access technology is not restricted, and bit 1 is used for indicating that the access technology is restricted;

[0287] Here, the extended RAT restrictions attribute and the newly added extended RAT restrictions attribute in step 3a correspond to each other, and if the first indication field indicates that the restricted RAT is applied to the current PLMN, this IE also corresponds to the newly added PlmnRATRestriction attribute in step 3a.

[0288] The first information element can be used to add a new information element in the registration acceptance message, containing the first indication field, for indicating that the restricted RAT is applied to all available PLMNs, so that the range of RAT restriction application can be extended through one indication field, saving coding resources.

[0289] The coding mode of the first information element is shown in FIG. 3.

[0290] The second information element is used for indicating the allowed access RAT list or the first RAT list not allowed to access, containing at least one of the following:

[0291] The second indication information (also can be called the second indication field) is used for indicating the number of PLMNs or the number of access technologies;

[0292] The third indication information (also can be called the third indication field) is used for indicating the type of the first RAT list, containing: one PLMN is associated with multiple access technologies, one PLMN is associated with one access technology, multiple different PLMNs are associated with one / multiple access technologies, and one or more access technologies are associated with all available PLMNs;

[0293] The fourth indication information (also referred to as the fourth indication field) is used to indicate that the access technologies in the first RAT list are allowed to access or not allowed to access;

[0294] The fifth indication information (also referred to as the fifth indication field) is used to indicate the valid information (also referred to as the valid condition) that the access technologies in the list are allowed to access or not allowed to access, including at least one of the following:

[0295] The time valid information can be a start time and an end time, can be a start time and a duration, can be only a start time (meaning that after the start time, the list is always allowed or always not allowed), or can be a value (for example, infinity, meaning that the list is always allowed or always not allowed);

[0296] The location valid information can be a tracking area, a cell, a geographical location, latitude and longitude, etc., for example, in the Antarctic region, the NR_LEO, the NR_MEO, and the NR_GEO access technologies are allowed to access, and in the urban area, the NR_LEO, the NR_MEO, and the NR_GEO access technologies are not allowed to access;

[0297] The service valid information can be a DNN, an S-NSSAI, an APP ID, IMS voice, etc., for example, when the video application a is used, the NR_LEO, the NR_MEO, and the NR_GEO access technologies are not allowed to access;

[0298] The sixth indication information (also referred to as the sixth indication field) is used to indicate the value of the first timer that is started when the access technology is disabled;

[0299] Zero or one or more PLMN ID fields are used to identify the PLMN, depending on the third indication field;

[0300] One or more access technology identifiers (Access technology ID) are used to identify one or more access technologies;

[0301] This corresponds to the newly added RAT restriction information / serving RAT information attribute in step 3a

[0302] The second information element described above can be used to add a second information element containing the second indication field, the third indication field, the fourth indication field, and the fifth indication field in the registration acceptance message. These indication fields need to be used in combination to indicate the RAT restriction of multiple different PLMNs. In this way, the RAT restriction of multiple different PLMNs can be sent to the UE at the same time through one information element, without the need for repeated sending, thereby saving signaling resources;

[0303] An example of the second information element can be shown in FIGS. 4-8.

[0304] The third information element is used to provide the RAT usage restriction list (i.e., the first RAT list described above) information, containing at least one of the following:

[0305] The RAT usage restriction information content length field is used to indicate the length of the RAT usage restriction information content; if the length field is 0, it means that the RAT usage restriction information is empty, i.e., there is no RAT usage restriction list;

[0306] One or more RAT usage restriction list (i.e., the first RAT list described above) fields are used to carry the RAT usage restriction list content;

[0307] The RAT usage restriction list content length field is used to indicate the length of the RAT usage restriction list content;

[0308] The PLMN ID field is used to identify a PLMN, indicating the PLMN associated with the RAT usage restriction list;

[0309] The third RAT field is used to indicate whether at least one RAT is prohibited, specifically as follows

[0310] The NG-RAN field is used to indicate whether NG-RAN is restricted;

[0311] The E-UTRAN field is used to indicate whether E-UTRAN is restricted;

[0312] The UTRAN field is used to indicate whether UTRAN is restricted;

[0313] The GERAN field is used to indicate whether GERAN is restricted;

[0314] The at least one RAT associated additional information list indication field is used to indicate whether the list of at least one RAT associated additional information (i.e., the valid information described above) exists, specifically as follows:

[0315] The NAILI field is used to indicate whether the list of additional information associated with NG-RAN exists;

[0316] The EAILI field is used to indicate whether the list of additional information associated with E-UTRAN exists;

[0317] The UAILI field is used to indicate whether the list of additional information associated with UTRAN exists;

[0318] The GAILI field is used to indicate whether the list of additional information associated with GERAN exists;

[0319] a list of additional information associated with at least one RAT field for carrying a list of additional information associated with at least one RAT, in particular as follows:

[0320] a NG-RAN associated additional information list field for carrying a list of additional information associated with NG-RAN;

[0321] an E-UTRAN associated additional information list field for carrying a list of additional information associated with E-UTRAN;

[0322] a UTRAN associated additional information list field for carrying a list of additional information associated with UTRAN;

[0323] a GERAN associated additional information list field for carrying a list of additional information associated with GERAN;

[0324] the at least one RAT associated additional information list field comprises at least one of:

[0325] a location validity information indication field (LVII) for indicating whether location validity information exists;

[0326] a location validity information field (Location validity information);

[0327] a time validity information indication field (TVII) for indicating whether time validity information exists;

[0328] a time validity information field (Time validity information);

[0329] a service validity information indication field (SVII) for indicating whether service validity information exists;

[0330] a service validity information field (Service validity information);

[0331] a restricted RAT with additional information list field for carrying a list of additional information associated with a restricted RAT;

[0332] an associated third RAT field for indicating whether additional information is associated with a RAT; in particular, comprising at least one of: Associated NG-RAN, Associated E-UTRAN, Associated UTRAN, Associated GERAN.

[0333] wherein the third information element coding can be as shown in FIG. 9 to FIG. 19.

[0334] In one approach, the first information can include a SOR-RAT restriction field or a SOR-serving RAT field in the SOR, for indicating the restricted RAT type list of the terminal or for indicating the allowed serving RAT list / disallowed serving RAT list;

[0335] This corresponds to the newly added RAT restriction Info attribute in step 3b

[0336] Specifically, a SOR-RAT restriction (SOR-RT) field or a SOR-serving RAT (SOR-SR) field is added in the SOR transparent container IE, as shown in FIG. 22.

[0337] Wherein, the encoding of SOR-RT is the same as the Restricted RAT IE, as shown in FIG. 23.

[0338] Step 5. The terminal performs a first operation according to the first information, the first operation being used to control the use of a specific access technology within a PLMN, including:

[0339] Step 5a. In the condition that the terminal determines that the current access technology is not allowed to be used, the terminal disables the current access technology, including:

[0340] The terminal determines that the current access technology (such as the first RAT described above) is in the restricted RAT list or in the disallowed access list or not in the allowed access list, and the UE disables the current access technology;

[0341] In the condition that the fourth indication information is used to indicate that the access technology in the list is allowed to access:

[0342] The current time of the terminal is not within the time validity information associated with the current access technology, and the terminal disables the current access technology;

[0343] The current location of the terminal is not within the location validity information associated with the current access technology, and the terminal disables the current access technology;

[0344] The current service executed by the terminal is not within the service validity information associated with the current access technology, and the terminal disables the current access technology;

[0345] The step 5a can realize that the terminal disables the current access technology according to the fourth indication information in the first information, so that the terminal can disable the restricted RAT through the information received from the HPLMN, guarantee the real-time and effectiveness of the RAT utilization, and further guarantee the service experience of the terminal.

[0346] In the case that the terminal disables the current access technology, the following at least one is further included:

[0347] The terminal stores the received second information or updates the second information;

[0348] The terminal NAS provides the restricted RAT list or the non-allowed RAT list or the allowed RAT list to the terminal AS;

[0349] The terminal performs cell reselection, and does not perform cell reselection in the access technology which is not allowed to use.

[0350] The terminal should use the stored first information in subsequent PLMN selection, and does not select the combination of the PLMN and the access technology which is not allowed to access.

[0351] The terminal enters the NO-CELL-AVAILABLE state, and the terminal performs network selection using the stored first information, and does not select the combination of the PLMN and the access technology which is not allowed to access;

[0352] The terminal remembers the PLMN identifier in which the access technology is disabled; specifically, the terminal maintains a forbidden access technology list with the granularity of the PLMN or a PLMN list associated with the disabled access technology with the granularity of the disabled access technology;

[0353] The terminal starts the first timer, and the UE sets the value of the first timer according to the value of the sixth field.

[0354] The rogue terminal can disable the restricted RAT through the information received from the HPLMN, guarantee the real-time and effectiveness of the RAT utilization, and further guarantee the service experience of the terminal;

[0355] Step 5b. In the case that the terminal determines that the second RAT is allowed to use, the terminal re-enables the second RAT, including re-enabling the second RAT in the following one case:

[0356] The second RAT is the disabled access technology associated with the current PLMN;

[0357] The terminal determines that the second RAT is not in the list of not allowed to access or in the list of allowed to access;

[0358] In the case that the fourth indication information is used to indicate the condition that the access technologies in the list are allowed to access: the terminal current time is within the time validity information associated with the second RAT, the UE current location is within the location validity information associated with the second RAT, the UE current service is within the service validity information associated with the second RAT;

[0359] The first timer associated with the second RAT expires.

[0360] In this way, the terminal can enable the restricted RAT through the information received from the HPLMN, guarantee the real-time and effectiveness of the RAT utilization, and further guarantee the service experience of the terminal;

[0361] In the case that the terminal re-enables the second RAT, the following at least one is further included:

[0362] The terminal updates the second information;

[0363] The terminal NAS provides the updated restricted RAT list or non-allowed RAT list or allowed RAT list to the terminal AS;

[0364] The terminal performs cell reselection according to the updated first information, and can perform cell reselection in the re-enabled second RAT;

[0365] The terminal should use the updated first information in subsequent PLMN selection, and not select the combination of PLMN and access technology combination that is not allowed to access;

[0366] If the terminal is in the NO-CELL-AVAILABLE state at this time, the UE performs network selection using the updated first information, and can select the combination of PLMN and re-enabled second RAT;

[0367] The terminal removes the current PLMN from the list of PLMNs in which the second RAT is disabled;

[0368] Specifically, the terminal removes the second RAT from the list of access technologies that are not allowed to access associated with the current PLMN, or removes the current PLMN from the list of PLMNs associated with the disabled second RAT.

[0369] Embodiment two:

[0370] The flow of the embodiment is shown in FIG. 24.

[0371] The difference between the embodiment and embodiment one is that the information about the RAT restriction is obtained after registration, and can be obtained through the SOR and UE parameter update (UPU) process.

[0372] If acquired through the UPU procedure, the first information element, the second information element, or the third information element is added in a UPU container.

[0373] Embodiment Three:

[0374] This embodiment mainly describes that a serving PLMN (or referred to as a current PLMN) controls sending of the first information (RAT restriction information).

[0375] The main idea of this embodiment is that a terminal acquires the first information (RAT restriction information) from a serving network, performs cell reselection according to the first information (RAT restriction information), and avoids selecting a restricted RAT, thereby solving the problem that an operator can control use of a specific access technology combination within a PLMN and achieving the gain of guaranteeing service experience of a terminal.

[0376] The difference from Embodiment One is that the HPLMN control needs to modify a terminal subscription, and the serving PLMN control needs to modify configuration information of the serving PLMN.

[0377] The corresponding signaling flowchart is shown in FIG. 25, including the following steps:

[0378] Step 1. The terminal initiates a registration request to the AMF, containing capability information, such as a first capability indication, used to indicate that the terminal supports a first feature, and the first feature is used for an operator to control use of a specific access technology within a PLMN.

[0379] Optionally, the first feature can be RAT restriction, enhancement of controlling RAT utilization, extended RAT restriction, or restricted RAT.

[0380] Optionally, the first capability indication can be included in an existing 5GMM capability IE, or can be an independent IE.

[0381] The difference here from Embodiment One is that the terminal must carry the first capability indication, because the AMF needs to determine whether the UE supports the first feature according to the first capability indication.

[0382] Step 2. If the AMF supports and accepts the first feature, the AMF includes the first capability indication in the registration acceptance.

[0383] Optionally, the first capability indication can be contained in a 5G system network feature support (5GS network feature support) IE, or can be an independent IE.

[0384] Further, the AMF contains a new information element in the registration accept for indicating the specific access technology combination controlled by the operator for use within the PLMN, including at least one of a first information element, a second information element, and a third information element. The content is the same as that in step 4 of the embodiment.

[0385] Step 3. The AMF sends a registration accept message to the UE.

[0386] Optionally, the message can also be a registration reject message.

[0387] Step 4. The terminal performs a first operation, which is the same as step 6 of the embodiment.

[0388] In the embodiment of the application, the terminal obtains first information (such as RAT restriction information) from the network, performs cell reselection according to the first information, and avoids selecting a restricted RAT, thereby solving the problem that the operator can control the use of a specific access technology combination within the PLMN, and achieving the gain of guaranteeing the service experience of the terminal.

[0389] The access technology control method provided in the embodiment of the application can be executed by an access technology control device. In the embodiment of the application, the access technology control method is executed by an access technology control device as an example, and the access technology control device provided in the embodiment of the application is described.

[0390] The embodiment of the application provides an access technology control device. As an example, the access technology control device can be a communication device or a component in the communication device, such as a chip. The communication device can be a terminal, a network side device, or a server, etc. For example, the terminal can include but is not limited to the types of the terminal 11 listed above, the network side device can include but is not limited to the types of the network side device 12 listed above, and the embodiment of the application is not limited specifically.

[0391] The access technology control apparatus or the access technology control apparatus can include a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor. The processor can include a general-purpose processor, a special-purpose processor, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic device, a gate circuit, a transistor, a discrete hardware component, etc. The receiving module and the sending module can be implemented by a communication interface. The communication interface can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0392] Specifically, referring to FIG. 26, when the access technology control apparatus is a terminal or a component in the terminal, the access technology control apparatus 2600 includes:

[0393] The receiving module 2601 is configured to obtain first information, the first information being used to indicate information of a radio access technology (RAT).

[0394] The processing module 2602 is configured to perform a first operation based on the first information, the first operation including at least one of the following:

[0395] Disabling a first RAT, the first RAT being a RAT determined to be limited based on the first information;

[0396] Using a second RAT, the second RAT being a disabled RAT associated with a public land mobile network (PLMN) corresponding to the terminal, but being a RAT determined not to be limited based on the first information.

[0397] Optionally, the first RAT being a RAT determined to be limited based on the first information includes at least one of the following:

[0398] In a case where the first RAT list indicated by the first information is a limited list, the first RAT is in the limited list.

[0399] In a case where the first information indicates that the first RAT list is an allowed list, the first RAT is not in the allowed list.

[0400] Optionally, the first information comprises at least one of:

[0401] first indication information, the first indication information being used for indicating that the restricted RAT is applicable to a current PLMN of the terminal or all PLMNs;

[0402] second indication information, the second indication information being used for indicating a number of PLMNs;

[0403] third indication information, the third indication information being used for indicating a type of the first RAT list;

[0404] fourth indication information, the fourth indication information being used for indicating that a RAT in the first RAT list is allowed to use or is restricted;

[0405] fifth indication information, the fifth indication information being used for indicating valid information of a RAT in the first RAT list;

[0406] sixth indication information, the sixth indication information being used for indicating a value of a timer enabled when the RAT is disabled;

[0407] the first RAT list;

[0408] information of a PLMN associated with the first RAT list;

[0409] seventh indication information, the seventh indication information being used for indicating whether at least one RAT is restricted;

[0410] eighth indication information, the eighth indication information being used for indicating whether at least one RAT is associated with valid information;

[0411] valid information of the at least one RAT;

[0412] ninth indication information, the ninth indication information being used for indicating a RAT associated with the valid information;

[0413] wherein the first RAT list is at least one RAT list corresponding to the first information.

[0414] Optionally, the valid information comprises at least one of:

[0415] time valid information, location valid information, and service valid information.

[0416] Optionally, the disabling of the first RAT comprises at least one of:

[0417] disable the first RAT in a case that the fourth indication information indicates that a RAT in the first RAT list is allowed to be used, the first RAT list comprising the second RAT;

[0418] disable the first RAT in a case that the first RAT list comprises the second RAT;

[0419] disable the first RAT in a case that the seventh indication information indicates that the first RAT is not forbidden;

[0420] disable the first RAT in a case that a current time is within valid time indicated by time validity information associated with the first RAT;

[0421] disable the first RAT in a case that a current location of the terminal is within valid location indicated by location validity information associated with the first RAT;

[0422] disable the first RAT in a case that a service type expected to be used by the terminal is within valid service indicated by service validity information associated with the first RAT;

[0423] wherein the first RAT is a RAT currently used by the terminal.

[0424] Optionally, the using the second RAT comprises at least one of:

[0425] use the second RAT in a case that the fourth indication information indicates that a RAT in the first RAT list is allowed to be used, the first RAT list comprising the second RAT;

[0426] use the second RAT in a case that the first RAT list does not comprise the second RAT;

[0427] use the second RAT in a case that the seventh indication information indicates that the second RAT is not forbidden;

[0428] use the second RAT in a case that a current time is within valid time indicated by time validity information associated with the second RAT;

[0429] use the second RAT in a case that a current location of the terminal is within valid location indicated by location validity information associated with the second RAT;

[0430] use the second RAT in a case that a service type expected to be used by the terminal is within valid service indicated by service validity information associated with the first RAT;

[0431] the timer associated with the second RAT expires, the second RAT is used, and the timer associated with the second RAT is a timer that is started when the second RAT is disabled.

[0432] Optionally, in the case that the first RAT is disabled, the processing module 2602 is further configured to perform at least one of the following:

[0433] providing the first RAT list or the first RAT to an access stratum (AS);

[0434] in the case that a no cell available state is entered, performing network selection based on the first information, wherein a first combination is not selected, the first combination being a combination of a RAT and a PLMN that is not allowed to be used;

[0435] storing the disabled PLMN information associated with the disabled RAT;

[0436] starting a timer when the first RAT is disabled.

[0437] Optionally, in the case that the second RAT is used, the processing module 2602 is further configured to perform at least one of the following:

[0438] updating the first information;

[0439] providing the updated first RAT list to an access stratum (AS), the updated RAT list indicating that the second RAT is allowed to be used;

[0440] performing cell reselection according to the updated first information;

[0441] performing PLMN selection using the updated first information, wherein a first combination is not selected, the first combination being a combination of a RAT and a PLMN that is not allowed to be used;

[0442] in the case that a no cell available state is entered, performing network selection based on the updated first information, wherein a second combination is allowed to be selected, the second combination being a combination of the second RAT and a PLMN;

[0443] setting the current PLMN of the terminal as a PLMN that is allowed to be accessed;

[0444] wherein the updated first information indicates that the second RAT is allowed to be used.

[0445] Optionally, the setting the current PLMN of the terminal as a PLMN that is allowed to be accessed comprises at least one of the following:

[0446] removing the current PLMN of the terminal from the list of disabled PLMNs associated with the second RAT;

[0447] remove the second RAT from a currently PLMN associated forbidden RAT list of the terminal.

[0448] Optionally, the first RAT list comprises at least one of:

[0449] a RAT restriction list, a list of RATs not allowed to use, a list of RATs allowed to use.

[0450] Optionally, the apparatus further comprises:

[0451] a sending module, configured to send capability information to a network side device, the capability information being used to indicate that the terminal supports operator control of RAT within a PLMN.

[0452] The access technology control apparatus can improve energy saving effect.

[0453] The access technology control apparatus provided by the embodiments of the present application can implement each process implemented by the method embodiment of FIG. 2 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0454] Referring to FIG. 27, when the access technology control apparatus is a network side device or a component in the network side device, the access technology control apparatus 2700 comprises:

[0455] a sending module 2701, configured to send capability information to a network side device, the capability information being used to indicate that the terminal supports operator control of RAT within a PLMN.

[0456] Optionally, the first information comprises at least one of:

[0457] first indication information, the first indication information being used to indicate that a restricted RAT is applicable to a current PLMN or all PLMNs of the terminal;

[0458] second indication information, the second indication information being used to indicate a number of PLMNs;

[0459] third indication information, the third indication information being used to indicate a type of the first RAT list;

[0460] fourth indication information, the fourth indication information being used to indicate whether a RAT in the first RAT list is allowed to use or is restricted;

[0461] fifth indication information, the fifth indication information being used to indicate valid information of a RAT in the first RAT list;

[0462] sixth indication information, the sixth indication information being used to indicate a value of a timer started when a forbidden RAT is started;

[0463] a first RAT list;

[0464] information of a PLMN associated with the first RAT list;

[0465] seventh indication information, used for indicating whether at least one RAT is limited;

[0466] eighth indication information, used for indicating whether at least one RAT is associated with valid information;

[0467] valid information of at least one RAT;

[0468] ninth indication information, used for indicating a RAT associated with the valid information.

[0469] Optionally, the valid information comprises at least one of:

[0470] time valid information, location valid information, service valid information.

[0471] Optionally, the first RAT list comprises at least one of:

[0472] a RAT limitation list, a list of RATs not allowed to use, a list of RATs allowed to use.

[0473] Optionally, the apparatus further comprises:

[0474] a receiving module, configured to receive capability information sent by the terminal, the capability information being used for indicating that the terminal supports that an operator controls a RAT within a PLMN.

[0475] The access technology control apparatus can improve network performance of the terminal.

[0476] The access technology control apparatus provided by the embodiments of the present application can implement each process implemented by the method embodiment of FIG. 20 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0477] As shown in FIG. 28, the embodiments of the present application further provide a communication device 2800, comprising a processor 2801 and a memory 2802, wherein the memory 2802 stores programs or instructions executable on the processor 2801. For example, when the communication device 2800 is a terminal, the programs or instructions are executed by the processor 2801 to implement each step of the access technology control method embodiments of the terminal side described above and achieve the same technical effects. When the communication device 2800 is a network side device, the programs or instructions are executed by the processor 2801 to implement each step of the access technology control method embodiments of the network side device described above and achieve the same technical effects. To avoid repetition, details are not described herein.

[0478] The embodiment of the present application further provides a terminal comprising a processor and a communication interface, the communication interface being coupled with the processor, and the processor being configured to run programs or instructions to implement the steps in the method embodiment shown in FIG. 2. The terminal embodiment corresponds to the terminal-side method embodiment described above, and each implementation process and implementation manner of the method embodiment described above can be applied to the terminal embodiment and achieve the same technical effects. The terminal can be the access technology control device shown in FIG. 26. Specifically, FIG. 29 is a schematic diagram of the hardware structure of a terminal for implementing the embodiment of the present application.

[0479] The terminal 2900 includes, but is not limited to, at least some of the following components: a radio frequency unit 2901, a network module 2902, an audio output unit 2903, an input unit 2904, a sensor 2905, a display unit 2906, a user input unit 2907, an interface unit 2908, a memory 2909, and a processor 2910.

[0480] Those skilled in the art can understand that the terminal 2900 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 2910 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG. 29 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or have a different arrangement of components, which will not be described here.

[0481] It should be understood that in the embodiment of the present application, the input unit 2904 can include a graphics processor 29041 and a microphone 29042, and the graphics processor 29041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 2906 can include a display panel 29061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 2907 includes at least one of a touch panel 29071 and other input devices 29072. The touch panel 29071 is also called a touch screen. The touch panel 29071 can include two parts of a touch detection device and a touch controller. The other input devices 29072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, etc., which will not be described here.

[0482] In the embodiment of the present application, the radio frequency unit 2901 can transmit downlink data from a network side device to the processor 2910 for processing, and can also transmit uplink data to the network side device. Generally, the radio frequency unit 2901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0483] The memory 2909 can be used to store software programs or instructions and various data. The memory 2909 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 2909 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 2909 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0484] The processor 2910 can include one or more processing units; optionally, the processor 2910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 2910.

[0485] The radio frequency unit 2901 is configured to obtain first information, wherein the first information is used to indicate information of a radio access technology (RAT).

[0486] The processor 2910 is configured to perform a first operation based on the first information, and the first operation includes at least one of the following:

[0487] disable a first RAT, the first RAT being a restricted RAT determined based on the first information;

[0488] use a second RAT, the second RAT being a disabled RAT associated with a public land mobile network (PLMN) corresponding to the terminal, but being a non-restricted RAT determined based on the first information.

[0489] Optionally, the first RAT being a restricted RAT determined based on the first information comprises at least one of:

[0490] in a case where the first RAT list indicated by the first information is a restriction list, the first RAT being in the restriction list;

[0491] in a case where the first RAT list indicated by the first information is an allowance list, the first RAT not being in the allowance list.

[0492] Optionally, the first information comprises at least one of:

[0493] first indication information, the first indication information being used to indicate that the restricted RAT is applicable to a current PLMN of the terminal or all PLMNs;

[0494] second indication information, the second indication information being used to indicate a number of PLMNs;

[0495] third indication information, the third indication information being used to indicate a type of the first RAT list;

[0496] fourth indication information, the fourth indication information being used to indicate whether a RAT in the first RAT list is allowed to be used or restricted;

[0497] fifth indication information, the fifth indication information being used to indicate validity information of a RAT in the first RAT list;

[0498] sixth indication information, the sixth indication information being used to indicate a value of a timer enabled when the RAT is disabled;

[0499] the first RAT list;

[0500] information of a PLMN associated with the first RAT list;

[0501] seventh indication information, the seventh indication information being used to indicate whether at least one RAT is restricted;

[0502] eighth indication information, the eighth indication information being used to indicate whether at least one RAT is associated with validity information;

[0503] validity information of the at least one RAT;

[0504] a ninth indication information, used for indicating a RAT associated with the valid information;

[0505] The first RAT list is at least one RAT list corresponding to the first information.

[0506] Optionally, the valid information comprises at least one of:

[0507] time valid information, location valid information, and service valid information.

[0508] Optionally, the disabling the first RAT comprises at least one of:

[0509] In a case where the fourth indication information indicates that a RAT in the first RAT list is limited, disabling the first RAT, the first RAT list comprising the first RAT;

[0510] In a case where the first RAT list comprises the first RAT, disabling the first RAT;

[0511] In a case where the seventh indication information indicates that the first RAT is not forbidden, using the second RAT;

[0512] In a case where a current time is within a valid time indicated by time valid information associated with the first RAT, disabling the first RAT;

[0513] In a case where a current location of the terminal is within a valid location indicated by location valid information associated with the first RAT, disabling the first RAT;

[0514] In a case where a service type expected to be used by the terminal is within a valid service indicated by service valid information associated with the first RAT, disabling the first RAT;

[0515] The first RAT is a RAT currently used by the terminal.

[0516] Optionally, the using the second RAT comprises at least one of:

[0517] In a case where the fourth indication information indicates that a RAT in the first RAT list is allowed to be used, using the second RAT, the first RAT list comprising the second RAT;

[0518] In a case where the first RAT list does not comprise the second RAT, using the second RAT;

[0519] In a case where the seventh indication information indicates that the second RAT is not forbidden, using the second RAT;

[0520] in case that the terminal is currently located in a valid location indicated by the location valid information associated with the second RAT, using the second RAT;

[0521] in case that the terminal is currently located in a valid location indicated by the location valid information associated with the second RAT, using the second RAT;

[0522] in case that the terminal is currently located in a valid location indicated by the location valid information associated with the second RAT, using the second RAT;

[0523] in case that the terminal is currently located in a valid location indicated by the location valid information associated with the second RAT, using the second RAT;

[0524] Optionally, in case that the first RAT is disabled, the processor 2910 is further configured to perform at least one of the following:

[0525] providing the first RAT list or the first RAT to an access stratum (AS);

[0526] in case that a no cell available state is entered, performing network selection based on the first information, wherein a first combination is not selected, the first combination being a combination of a restricted RAT and a PLMN;

[0527] storing the disabled PLMN information associated with the restricted RAT;

[0528] starting a timer when the first RAT is disabled.

[0529] Optionally, in case that the second RAT is used, the processor 2910 is further configured to perform at least one of the following:

[0530] updating the first information;

[0531] providing the updated first RAT list to an access stratum (AS), the updated first RAT list indicating that the second RAT is allowed to be used;

[0532] performing cell reselection according to the updated first information;

[0533] performing network selection using the updated first information, wherein a first combination is not selected, the first combination being a combination of a restricted RAT and a PLMN;

[0534] in case that a no cell available state is entered, performing network selection based on the updated first information, wherein a second combination is allowed to be selected, the second combination being a combination of the second RAT and a PLMN;

[0535] setting the current PLMN of the terminal as a PLMN allowed to be accessed;

[0536] wherein the updated first information indicates that the second RAT is allowed to be used.

[0537] Optionally, the setting the current PLMN of the terminal as a PLMN allowed to be accessed comprises at least one of:

[0538] removing the current PLMN of the terminal from a list of disabled PLMNs associated with the second RAT;

[0539] removing the second RAT from a list of disabled RATs associated with the current PLMN of the terminal.

[0540] Optionally, the first RAT list comprises at least one of:

[0541] a RAT restriction list, a list of RATs not allowed to be used, and a list of RATs allowed to be used.

[0542] Optionally, the radio frequency unit 2901 is further configured to:

[0543] send, to a network side device, capability information, the capability information being used to indicate that the terminal supports operator control of RATs within a PLMN.

[0544] The terminal described above can improve the network performance of the terminal.

[0545] It can be understood that the implementation processes of the implementation manners mentioned in the embodiments can refer to the related descriptions of the access technology control method embodiments and achieve the same or corresponding technical effects. To avoid repetition, they will not be described here again.

[0546] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run programs or instructions to implement the steps of the method embodiments shown in FIG. 20. The network side device embodiments correspond to the network side device method embodiments described above, and each implementation process and implementation manner of the method embodiments can be applied to the network side device embodiments and achieve the same technical effects.

[0547] Specifically, the embodiments of the present application also provide a network side device. As shown in FIG. 30, the network side device 3000 comprises a processor 3001, a network interface 3002 and a memory 3003. The network side device can be the access technology control apparatus shown in FIG. 27. The network interface 3002 is, for example, a common public radio interface (CPRI).

[0548] Specifically, the network side device 3000 in the embodiments of the present application further includes instructions or programs stored in the storage 3003 and executable on the processor 3001, the processor 3001 invokes the instructions or programs in the storage 3003 to execute the method performed by each module shown in FIG. 27 and achieve the same technical effects, to avoid repetition, details are not described here.

[0549] The network interface 3002 is configured to send first information to the terminal, the first information being used to indicate information of a radio access technology (RAT).

[0550] Optionally, the first information includes at least one of the following:

[0551] First indication information, the first indication information being used to indicate that the restricted RAT is applicable to a current PLMN or all PLMNs of the terminal;

[0552] Second indication information, the second indication information being used to indicate a number of PLMNs;

[0553] Third indication information, the third indication information being used to indicate a type of the first RAT list;

[0554] Fourth indication information, the fourth indication information being used to indicate whether a RAT in the first RAT list is allowed to be used or restricted;

[0555] Fifth indication information, the fifth indication information being used to indicate validity information of the RAT in the first RAT list;

[0556] Sixth indication information, the sixth indication information being used to indicate a value of a timer enabled when the RAT is disabled;

[0557] The first RAT list;

[0558] Information of a PLMN associated with the first RAT list;

[0559] Seventh indication information, the seventh indication information being used to indicate whether at least one RAT is restricted;

[0560] Eighth indication information, the eighth indication information being used to indicate whether at least one RAT is associated with validity information;

[0561] The validity information of the at least one RAT;

[0562] Ninth indication information, the ninth indication information being used to indicate a RAT associated with the validity information.

[0563] Optionally, the validity information includes at least one of the following:

[0564] Time validity information, location validity information, and service validity information.

[0565] Optionally, the first RAT list comprises at least one of the following:

[0566] a RAT restriction list, a list of RATs not allowed to use, a list of RATs allowed to use.

[0567] Optionally, the network interface 3002 is further configured to:

[0568] receive the capability information sent by the terminal, the capability information being used to indicate that the terminal supports operator control of RAT within a PLMN.

[0569] The network side device described above can improve the network performance of the terminal.

[0570] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the access technology control method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0571] The embodiment of the application further provides a readable storage medium, the readable storage medium stores a program or instructions, the program or instructions are executed by a processor to implement each process of the access technology control method embodiment described above, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0572] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0573] The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, the processor is used to run a program or instructions, and each process of the access technology control method embodiment described above is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0574] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system level chip, a system chip, a chip system or a system on chip, etc.

[0575] The embodiment of the application further provides a computer program / program product, the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement each process of the access technology control method embodiment described above, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0576] The embodiments of the present application further provide a wireless communication system, comprising: a terminal and a network side device, the terminal can be used for executing the steps of the access technology control method provided by the embodiments of the present application, and the network side device can be used for executing the steps of the access technology control method provided by the embodiments of the present application.

[0577] It should be noted that, in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0578] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of computer software product and general hardware platform, of course, it can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making the terminal or network side device execute the method described in each embodiment of the present application.

[0579] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, and these embodiments all belong to the protection scope of the present application.

Claims

1. An access technology control method, comprising: a terminal obtaining first information, the first information being used to indicate information of a radio access technology (RAT); the terminal performing a first operation based on the first information, the first operation comprising at least one of: disabling a first RAT, the first RAT being a RAT determined to be restricted based on the first information; using a second RAT, the second RAT being a disabled RAT associated with a public land mobile network (PLMN) corresponding to the terminal, but determined to be unrestricted based on the first information.

2. The method of claim 1, wherein, the first RAT being a RAT determined to be restricted based on the first information comprising at least one of: in a case where a first RAT list indicated by the first information is a restricted list, the first RAT being in the restricted list; in a case where the first RAT list indicated by the first information is an allowed list, the first RAT not being in the allowed list.

3. The method of claim 1 or 2, wherein, the first information comprising at least one of: first indication information, the first indication information being used to indicate that a restricted RAT is applicable to a current PLMN of the terminal or all PLMNs; second indication information, the second indication information being used to indicate a number of PLMNs; third indication information, the third indication information being used to indicate a type of a first RAT list; fourth indication information, the fourth indication information being used to indicate that a RAT in a first RAT list is allowed to use or restricted; fifth indication information, the fifth indication information being used to indicate validity information of a RAT in a first RAT list; sixth indication information, the sixth indication information being used to indicate a value of a timer started when a RAT is disabled; a first RAT list; information of a PLMN associated with the first RAT list; seventh indication information, the seventh indication information being used to indicate whether at least one RAT is restricted; eighth indication information, the eighth indication information being used to indicate whether at least one RAT is associated with validity information; validity information of at least one RAT; ninth indication information, the ninth indication information being used to indicate a RAT associated with validity information.

4. The method of claim 3, wherein, the validity information comprising at least one of: time validity information, location validity information, service validity information.

5. The method of claim 3 or 4, wherein, the disabling of the first RAT comprising at least one of: in a case where the fourth indication information indicates that a RAT in the first RAT list is restricted, the first RAT being disabled, the RAT list comprising the first RAT; in a case where the first RAT list comprises the first RAT, the first RAT being disabled; in a case where the seventh indication information indicates that the first RAT is forbidden, the first RAT being disabled; in a case where a current time is within a valid time indicated by time validity information associated with the first RAT, the first RAT being disabled; in a case where a current location of the terminal is within a valid location indicated by location validity information associated with the first RAT, the first RAT being disabled; in a case where a service type expected to be used by the terminal is within a valid service indicated by service validity information associated with the first RAT, the first RAT being disabled. The first RAT is a RAT currently used by the terminal.

6. The method of claim 3 or 4, wherein, The using the second RAT comprises at least one of: In a case where the fourth indication information indicates that a RAT in the first RAT list is allowed to be used, using the second RAT, the first RAT list comprising the second RAT; In a case where the first RAT list does not comprise the second RAT, using the second RAT; In a case where the seventh indication information indicates that the second RAT is not prohibited, using the second RAT; In a case where a current time is within a valid time indicated by time validity information associated with the second RAT, using the second RAT; In a case where a current location of the terminal is within a valid location indicated by location validity information associated with the second RAT, using the second RAT; In a case where a service type expected to be used by the terminal is within a valid service indicated by service validity information associated with the first RAT, using the second RAT; In a case where a timer associated with the second RAT is expired, using the second RAT, the timer associated with the second RAT being a timer enabled when the second RAT is disabled.

7. The method of any one of claims 1 to 6, wherein, In a case where the first RAT is disabled, the method further comprises at least one of: The terminal provides the first RAT list or the first RAT to an access stratum (AS); In a case where the terminal enters a no cell available state, the terminal performs network selection based on the first information, wherein a first combination is not selected, the first combination being a combination of a restricted RAT and a PLMN; The terminal stores prohibited PLMN information associated with a restricted RAT; In a case where the first RAT is disabled, a timer is started.

8. The method of any one of claims 1 to 7, wherein, In a case where the second RAT is used, the method further comprises at least one of: The terminal updates the first information; The terminal provides an updated first RAT list to an access stratum (AS), the updated first RAT list indicating that the second RAT is allowed to be used; The terminal performs cell reselection according to the updated first information; The terminal performs network selection using the updated first information, wherein a first combination is not selected, the first combination being a combination of a restricted RAT and a PLMN; The terminal performs network selection based on the updated first information in a case where the terminal enters a no cell available state, wherein a second combination is allowed to be selected, the second combination being a combination of the second RAT and a PLMN; The terminal sets a current PLMN of the terminal as a PLMN allowed to be accessed; The updated first information indicates that the second RAT is allowed to be used.

9. The method of claim 8, wherein, The terminal sets a current PLMN of the terminal as a PLMN allowed to be accessed comprises at least one of: The terminal removes the current PLMN of the terminal from a prohibited PLMN list associated with the second RAT; The terminal removes the second RAT from a disabled RAT list associated with the current PLMN of the terminal.

10. The method of any one of claims 2 to 9, wherein, The first RAT list comprises at least one of: RAT restriction list, RAT list not allowed to use, RAT list allowed to use.

11. The method of any of claims 1-10, further comprising: sending, by the terminal, capability information to a network-side device, the capability information indicating that the terminal supports operator control of RATs within a PLMN.

12. A method for access technology control, comprising: sending, by a network-side device, first information to a terminal, the first information indicating information of radio access technologies (RATs).

13. The method of claim 12, wherein, The first information comprises at least one of: first indication information indicating that a restricted RAT applies to a current PLMN of the terminal or all PLMNs; second indication information indicating a number of PLMNs; third indication information indicating a type of a first RAT list; fourth indication information indicating whether a RAT in the first RAT list is allowed to use or restricted; fifth indication information indicating validity information of a RAT in the first RAT list; sixth indication information indicating a value of a timer enabled when a RAT is disabled; the first RAT list; information of a PLMN associated with the first RAT list; seventh indication information indicating whether at least one RAT is restricted; eighth indication information indicating whether at least one RAT is associated with validity information; validity information of the at least one RAT; ninth indication information indicating a RAT associated with the validity information.

14. The method of claim 13, wherein, The validity information comprises at least one of: time validity information, location validity information, service validity information.

15. The method of claim 13 or 14, wherein, The first RAT list comprises at least one of: a RAT restriction list, a RAT list not allowed to use, a RAT list allowed to use.

16. The method of any of claims 12-15, further comprising: receiving, by the network-side device, capability information sent by the terminal, the capability information indicating that the terminal supports operator control of RATs within a PLMN.

17. An apparatus for access technology control, comprising: a receiving module configured to obtain first information, the first information indicating information of radio access technologies (RATs); a processing module configured to perform a first operation based on the first information, the first operation comprising at least one of: disabling a first RAT, the first RAT being a restricted RAT determined based on the first information; using a second RAT, the second RAT being a disabled RAT associated with a current PLMN of a terminal but determined not to be restricted based on the first information.

18. The apparatus of claim 17, wherein, The first information comprises at least one of: first indication information indicating that a restricted RAT applies to a current PLMN of the terminal or all PLMNs; second indication information indicating a number of PLMNs; third indication information indicating a type of a first RAT list; fourth indication information, used for indicating that a RAT in the first RAT list is allowed to be used or is limited; fifth indication information, used for indicating valid information of a RAT in the first RAT list; sixth indication information, used for indicating a value of a timer that is started when a RAT is disabled; the first RAT list; information of a PLMN associated with the first RAT list; seventh indication information, used for indicating whether at least one RAT is limited; eighth indication information, used for indicating whether at least one RAT is associated with valid information; valid information of at least one RAT; ninth indication information, used for indicating a RAT associated with valid information; wherein the first RAT list is at least one RAT list corresponding to the first information.

19. The apparatus of claim 17 or 18, wherein, In a case where the first RAT is disabled, the processing module is further configured to perform at least one of the following: providing the first RAT list or the first RAT to an access stratum (AS); in a case where a no cell available state is entered, performing network selection based on the first information, wherein a first combination is not selected, the first combination being a combination of a RAT that is not allowed to be used and a PLMN; storing disabled PLMN information associated with a disabled RAT; starting a timer when the first RAT is disabled.

20. The apparatus of any one of claims 17-19, wherein, In a case where the second RAT is used, the processing module is further configured to perform at least one of the following: updating the first information; providing an updated first RAT list to an access stratum (AS), the updated first RAT list indicating that the second RAT is allowed to be used; performing cell reselection according to the updated first information; performing PLMN selection using the updated first information, wherein a first combination is not selected, the first combination being a combination of a RAT that is not allowed to be used and a PLMN; in a case where a no cell available state is entered, performing network selection based on the updated first information, wherein a second combination is allowed to be selected, the second combination being a combination of the second RAT and a PLMN; setting a current PLMN of the terminal as a PLMN that is allowed to be accessed; wherein the updated first information indicates that the second RAT is allowed to be used.

21. The apparatus of any one of claims 17-20, wherein, The apparatus further includes: a sending module configured to send capability information to a network side device, the capability information being used for indicating that the terminal supports that an operator controls a RAT within a PLMN.

22. An access technology control apparatus, comprising: a sending module configured to send first information to a terminal, the first information being used for indicating information of a radio access technology (RAT).

23. The apparatus of claim 22, wherein, The first information includes at least one of the following: first indication information, used for indicating that a limited RAT is applicable to a current PLMN of the terminal or all PLMNs; second indication information, used for indicating a number of PLMNs; third indication information, used for indicating a type of a first RAT list; wherein the first RAT list is at least one RAT list corresponding to the first information. a fourth indication information, used for indicating whether a RAT in the first RAT list is allowed to use or is limited; a fifth indication information, used for indicating valid information of a RAT in the first RAT list; a sixth indication information, used for indicating a value of a timer enabled when a RAT is disabled; a first RAT list; information of a PLMN associated with the first RAT list; a seventh indication information, used for indicating whether at least one RAT is limited; an eighth indication information, used for indicating whether at least one RAT is associated with valid information; valid information of at least one RAT; a ninth indication information, used for indicating a RAT associated with the valid information.

24. The apparatus of any one of claims 17-23, wherein, The apparatus further includes: a receiving module, configured to receive capability information sent by the terminal, the capability information being used for indicating that the terminal supports that an operator controls a RAT within a PLMN. 25.A terminal, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement steps of the access technology control method according to any one of claims 1 to 11. 26.A network side device, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement steps of the access technology control method according to any one of claims 12 to 16. 27.A readable storage medium, the readable storage medium storing programs or instructions, the programs or instructions being executed by a processor to implement steps of the access technology control method according to any one of claims 1 to 11, or to implement steps of the access technology control method according to any one of claims 12 to 16. 28.A computer program product, the computer program product being stored in a storage medium, the computer program product being executed by at least one processor to implement steps of the access technology control method according to any one of claims 1 to 11, or to implement steps of the access technology control method according to any one of claims 12 to 16.

Images