Method and device for determining terminal access mode, equipment and storage medium

Abstract

The invention provides a method and device for determining a terminal access mode, equipment and a storage medium. The method comprises the following steps: acquiring a system information block SIB of a first cell, a first communication protocol of terminal support reduction capability and a first communication protocol of standard capability; according to the SIB of the first cell, determining whether a first communication protocol supported by the first cell comprises a reduced capability first communication protocol, the first communication protocol comprising a standard capability first communication protocol; if the first communication protocol does not comprise the first communication protocol with reduced capability, determining first cell information of the first cell, the first cell information comprising at least one of the following: a duplex mode, the number of receiving antennas of a terminal with standard capability required by a frequency band corresponding to the first cell, an initial partial bandwidth (BWP), and cell restriction information; and determining a target access mode of the terminal according to the first cell information. The continuity of using the network by the terminal is improved, and the use experience of a user is further improved.

Description

Technical Field

[0001] The present application relates to the field of network communications, and in particular to a method, device, equipment and storage medium for determining a terminal access mode. Background Art

[0002] RedCap (Reduced Capability) terminals are lightweight 5G terminals. Compared with ordinary 5G terminals, RedCap terminals have lower power consumption and lower costs. RedCap terminals can support 1T2R (i.e., 1 antenna for transmission and 2 antennas for reception) or 1T1R, 20M bandwidth in frequency range 1 (FR1).

[0003] The 3rd Generation Partnership Project (3GPP) protocol stipulates that RedCap terminals cannot access 5G networks that do not support RedCap; and stipulates that if the frequency band of the 5G network is n7 (FDD band), n38, n41, n48, n77, n78, n79, n104 (TDD band), the standard capability terminal accessing the 5G network should support 1T4R (i.e. single antenna transmission, 4 antennas reception). In other FR1 frequency bands, standard capability terminals accessing the 5G network should at least support 1T2R. In such frequency bands, the configuration requirements of 5G networks for RedCap terminals and standard capability terminals are basically the same. However, RedCap terminals cannot access 5G networks on any frequency band that does not support RedCap, which makes the continuity of the terminal's use of the network poor, resulting in a poor user experience. Summary of the invention

[0004] The present application provides a method, apparatus, device and storage medium for determining a terminal access mode, so as to improve the continuity of the terminal's use of the network, thereby improving the user's experience.

[0005] In a first aspect, the present application provides a method for determining a terminal access mode, comprising:

[0006] Acquire a system information block SIB of the first cell, where the terminal supports a first communication protocol with reduced capabilities and a first communication protocol with standard capabilities;

[0007] Determining, according to the SIB of the first cell, whether a first communication protocol supported by the first cell includes a reduced-capability first communication protocol, the first communication protocol including a standard-capability first communication protocol;

[0008] If the first communication protocol does not include the first communication protocol with reduced capability, determining first cell information of the first cell, the first cell information including at least one of the following: a duplex mode, a frequency band corresponding to the first cell requiring the number of receiving antennas possessed by a standard capability terminal, an initial partial bandwidth BWP, and cell restriction information;

[0009] A target access mode of the terminal is determined according to the first cell information.

[0010] In a possible implementation manner, determining, according to the first cell information, a target access mode for the terminal to access the first cell includes:

[0011] When any of the following conditions is met, the target access mode is determined to be a standard access mode:

[0012] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0013] The number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to a preset threshold; or,

[0014] The duplex mode is a frequency division duplex FDD mode; or,

[0015] The duplex mode is an FDD mode, and the initial BWP is less than or equal to the preset threshold, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0016] The duplex mode is a time division duplex TDD mode, the number of receiving antennas of the terminal is 2, the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold.

[0017] In a possible implementation, the method further includes:

[0018] When any of the following conditions is met, it is determined that the terminal does not access the first cell:

[0019] The duplex mode is a TDD mode; or,

[0020] The duplex mode is a TDD mode, and the initial BWP is greater than a preset threshold; or,

[0021] The duplex mode is a TDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas that a standard-capability terminal has is 4.

[0022] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the method further includes:

[0023] When any of the following conditions is met, the target access mode is determined to be a reduced capability access mode or a standard access mode:

[0024] The duplex mode is FDD mode; or,

[0025] The duplex mode is an FDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2.

[0026] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the method further includes:

[0027] When any of the following conditions is met, the target access mode is determined to be a standard access mode:

[0028] The cell restriction information prohibits access by a reduced-capability terminal having two receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by a standard-capability terminal is at least two, and the number of receiving antennas of the terminal is two; or,

[0029] The cell restriction information prohibits access by reduced-capability terminals having 1 and 2 receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by standard-capability terminals is at least 2, and the number of receiving antennas of the terminal is 2.

[0030] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the method further includes:

[0031] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is 4, and the number of receiving antennas of the terminal is 1 or 2, then determining that the target access mode is a reduced-capability access mode;

[0032] The cell restriction information prohibits a reduced-capability terminal having one receiving antenna from accessing, and the number of receiving antennas of the terminal is 1, then it is determined that the terminal does not access the first cell.

[0033] In a possible implementation manner, after determining the target access mode of the terminal, the method further includes:

[0034] Access the first cell according to the target access mode.

[0035] In a possible implementation manner, if the target access mode is a standard access mode, the terminal has at least one of the following capabilities:

[0036] Supports 16 data radio bearers (DRBs);

[0037] 18-bit Packet Data Convergence Protocol Sequence Number PDCP SN length;

[0038] 18-bit length of the Radio Link Control Protocol Acknowledgement Mode Sequence Number RLC AM SN;

[0039] In frequency range 1, the physical downlink channel PDSCH should support 256 quadrature amplitude modulation QAM;

[0040] There is no need to support early identification of reduced-capability terminals during random access;

[0041] There is no need to carry capability reduction information in the terminal capability message;

[0042] Supports carrier aggregation CA, multi-standard dual connectivity MR-DC, dual activation protocol stack DAPS, conditional primary and secondary cell addition or change CPAC and integrated access backhaul IAB function.

[0043] In a possible implementation manner, if the target access mode is a reduced capability access mode, the terminal has at least one of the following capabilities:

[0044] Supports 8 DRBs;

[0045] Support 12-bit PDCP SN length;

[0046] Support 12-bit RLC AM SN length;

[0047] In frequency range 1, PDSCH should support 64QAM modulation;

[0048] Support early identification of reduced-capability terminals during random access;

[0049] Supporting carrying capability reduction information in the terminal capability message.

[0050] In a possible implementation manner, after determining not to access the first cell, the method further includes:

[0051] searching for a second cell and determining a cell type of the second cell;

[0052] Access the second cell according to the cell type and terminal capability.

[0053] In a possible implementation manner, accessing the second cell according to the cell type and the terminal capability includes:

[0054] If the cell type of the second cell is a 5G cell and the terminal supports 5G, access the second cell in a 5G access mode;

[0055] If the cell type of the second cell is a 4G cell and the terminal supports 4G, accessing the second cell in a 4G access mode;

[0056] If the cell type of the second cell is a 3G cell and the terminal supports 3G, accessing the second cell in a 3G access mode;

[0057] If the cell type of the second cell is a 2G cell and the terminal supports 2G, the second cell is accessed in a 2G access mode.

[0058] In a possible implementation manner, before acquiring a system information block SIB of the first cell, the method further includes:

[0059] Execute the boot-up network search process;

[0060] Before accessing the first cell according to the target access mode, the method further includes:

[0061] The terminal capability message is sent to the first network device, where the terminal capability message is used to indicate that the terminal supports a first communication protocol with standard capability.

[0062] In a possible implementation manner, before acquiring a system information block SIB of the first cell, the method further includes:

[0063] Entering a third cell supporting a second communication protocol from an access state of a first communication protocol with reduced capabilities, or from an access state of a first communication protocol with standard capabilities;

[0064] When the terminal is in an idle state, obtaining the SIB of the third cell, and after a preset reselection condition is met, initiating search and measurement on the first cell;

[0065] After accessing the first cell according to the target access mode, the method further includes:

[0066] A terminal capability update message is sent to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated.

[0067] In a possible implementation manner, the first communication protocol is a 5G protocol or a 6G protocol; and the second communication protocol is lower than the first communication protocol:

[0068] If the first communication protocol is a 5G protocol, the second communication protocol is a 4G protocol;

[0069] If the first communication protocol is the 6G protocol, the second communication protocol is the 5G protocol.

[0070] In a possible implementation manner, before acquiring a system information block SIB of the first cell, the method further includes:

[0071] Accessing the third cell from an access state of the first communication protocol with reduced capabilities, or from an access state of the first communication protocol with standard capabilities;

[0072] When the terminal is in an idle state, obtaining the SIB of the third cell, and after a preset reselection condition is met, initiating search and measurement on the first cell;

[0073] After accessing the first cell according to the target access mode, the method further includes:

[0074] A terminal capability update message is sent to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated, and the first communication protocol supported by the third cell is different from that supported by the first cell.

[0075] In a second aspect, the present application provides a device for determining a terminal access mode, comprising: an acquisition module, a first determination module, a second determination module and a third determination module, wherein:

[0076] The acquisition module is used to acquire a system information block SIB of the first cell, and the terminal supports a first communication protocol with reduced capability and a first communication protocol with standard capability;

[0077] The first determination module is used to determine, according to the SIB of the first cell, whether the first communication protocol supported by the first cell includes a reduced capability first communication protocol, and the first communication protocol includes a standard capability first communication protocol;

[0078] The second determination module is used to determine the first cell information of the first cell if the first communication protocol does not include the first communication protocol with reduced capability, the first cell information including at least one of the following: duplex mode, the number of receiving antennas required by the standard capability terminal for the frequency band corresponding to the first cell, the initial partial bandwidth BWP, and cell restriction information;

[0079] The third determination module is used to determine a target access mode of the terminal according to the first cell information.

[0080] In a possible implementation manner, the third determining module is specifically configured to:

[0081] When any of the following conditions is met, the target access mode is determined to be a standard access mode:

[0082] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0083] The number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to a preset threshold; or,

[0084] The duplex mode is a frequency division duplex FDD mode; or,

[0085] The duplex mode is an FDD mode, and the initial BWP is less than or equal to the preset threshold, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0086] The duplex mode is a time division duplex TDD mode, the number of receiving antennas of the terminal is 2, the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold.

[0087] In a possible implementation manner, the third determining module is further configured to:

[0088] When any of the following conditions is met, it is determined that the terminal does not access the first cell:

[0089] The duplex mode is a TDD mode; or,

[0090] The duplex mode is a TDD mode, and the initial BWP is greater than a preset threshold; or,

[0091] The duplex mode is a TDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas that a standard-capability terminal has is 4.

[0092] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the third determination module is further configured to:

[0093] When any of the following conditions is met, the target access mode is determined to be a reduced capability access mode or a standard access mode:

[0094] The duplex mode is FDD mode; or,

[0095] The duplex mode is an FDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2.

[0096] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the third determination module is further configured to:

[0097] When any of the following conditions is met, the target access mode is determined to be a standard access mode:

[0098] The cell restriction information prohibits access by a reduced-capability terminal having two receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by a standard-capability terminal is at least two, and the number of receiving antennas of the terminal is two; or,

[0099] The cell restriction information prohibits access by reduced-capability terminals having 1 and 2 receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by standard-capability terminals is at least 2, and the number of receiving antennas of the terminal is 2.

[0100] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the third determination module is further configured to:

[0101] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is 4, and the number of receiving antennas of the terminal is 1 or 2, then determining that the target access mode is a reduced-capability access mode;

[0102] The cell restriction information prohibits a reduced-capability terminal having one receiving antenna from accessing, and the number of receiving antennas of the terminal is 1, then it is determined that the terminal does not access the first cell.

[0103] In a possible implementation manner, after determining the target access mode of the terminal, the device further includes an access module:

[0104] The access module is used to access the first cell according to the target access mode.

[0105] In a possible implementation manner, if the target access mode is a standard access mode, the terminal has at least one of the following capabilities:

[0106] Supports 16 data radio bearers (DRBs);

[0107] 18-bit Packet Data Convergence Protocol Sequence Number PDCP SN length;

[0108] 18-bit length of the Radio Link Control Protocol Acknowledgement Mode Sequence Number RLC AM SN;

[0109] In frequency range 1, the physical downlink channel PDSCH should support 256 quadrature amplitude modulation QAM;

[0110] There is no need to support early identification of reduced-capability terminals during random access;

[0111] There is no need to carry capability reduction information in the terminal capability message;

[0112] Supports carrier aggregation CA, multi-standard dual connectivity MR-DC, dual activation protocol stack DAPS, conditional primary and secondary cell addition or change CPAC and integrated access backhaul IAB function.

[0113] In a possible implementation manner, if the target access mode is a reduced capability access mode, the terminal has at least one of the following capabilities:

[0114] Supports 8 DRBs;

[0115] Support 12-bit PDCP SN length;

[0116] Support 12-bit RLC AM SN length;

[0117] In frequency range 1, PDSCH should support 64QAM modulation;

[0118] Support early identification of reduced-capability terminals during random access;

[0119] Supporting carrying capability reduction information in the terminal capability message.

[0120] In a possible implementation manner, after determining not to access the first cell, the apparatus further includes:

[0121] The search module is used to search for the second cell and determine the cell type of the second cell;

[0122] The access module is further configured to access a second cell according to the cell type and terminal capability.

[0123] In a possible implementation manner, the access module is specifically used to:

[0124] If the cell type of the second cell is a 5G cell and the terminal supports 5G, access the second cell in a 5G access mode;

[0125] If the cell type of the second cell is a 4G cell and the terminal supports 4G, accessing the second cell in a 4G access mode;

[0126] If the cell type of the second cell is a 3G cell and the terminal supports 3G, accessing the second cell in a 3G access mode;

[0127] If the cell type of the second cell is a 2G cell and the terminal supports 2G, the second cell is accessed in a 2G access mode.

[0128] In a possible implementation manner, before acquiring the system information block SIB of the first cell, the apparatus further includes: an execution module and a sending module.

[0129] The execution module is used to execute the boot-up network search process;

[0130] Before accessing the first cell according to the target access mode, the method further includes:

[0131] The sending module is used to send the terminal capability message to the first network device, and the terminal capability message is used to indicate that the terminal supports the first communication protocol with standard capability.

[0132] In a possible implementation manner, before acquiring the system information block SIB of the first cell, the apparatus further includes: a measurement module,

[0133] The access module is further configured to access a third cell supporting the second communication protocol from an access state of the first communication protocol with reduced capability, or from an access state of the first communication protocol with standard capability;

[0134] The acquisition module is further configured to, when the terminal is in an idle state, acquire the SIB of the third cell;

[0135] The measurement module is used to initiate search and measurement on the first cell after a preset reselection condition is met;

[0136] After accessing the first cell according to the target access mode, the method further includes:

[0137] The sending module is further used to send a terminal capability update message to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated.

[0138] In a possible implementation manner, the first communication protocol is a 5G protocol or a 6G protocol; and the second communication protocol is lower than the first communication protocol:

[0139] If the first communication protocol is a 5G protocol, the second communication protocol is a 4G protocol;

[0140] If the first communication protocol is the 6G protocol, the second communication protocol is the 5G protocol.

[0141] In a possible implementation manner, before acquiring the system information block SIB of the first cell,

[0142] The access module is further configured to access the third cell from an access state of the first communication protocol with reduced capability or from an access state of the first communication protocol with standard capability;

[0143] The acquisition module is further configured to, when the terminal is in an idle state, acquire the SIB of the third cell;

[0144] The measurement module is further configured to initiate search and measurement on the first cell after a preset reselection condition is met;

[0145] After the terminal accesses the first cell according to the target access mode, the method further includes:

[0146] The sending module is further used to send a terminal capability update message to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated, and the first communication protocol supported by the third cell is different from that supported by the first cell.

[0147] In a third aspect, the present application provides a terminal device, comprising: a processor, and a memory communicatively connected to the processor;

[0148] The memory stores computer-executable instructions;

[0149] The processor executes the computer-executable instructions stored in the memory to implement the method as described in any one of the first aspects.

[0150] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method as described in any one of the first aspects.

[0151] In a fifth aspect, the present application provides a computer program product, including a computer program, which implements the method described in any one of the first aspects when executed by a processor.

[0152] The present application provides a method, apparatus, device and storage medium for determining a terminal access mode, which can obtain a system information block SIB of a first cell, and determine whether a first communication protocol supported by the first cell includes a first communication protocol with reduced capabilities based on the SIB of the first cell. If the first communication protocol does not include the first communication protocol with reduced capabilities, the first cell information of the first cell is determined, and the target access mode of the terminal is determined based on the first cell information. Since the terminal can determine to access the first cell in a standard access mode or to search for a second cell to access the second cell based on the first cell information when determining that the first communication protocol of the first cell does not include the first communication protocol with reduced capabilities; when the first communication protocol includes the first communication protocol with reduced capabilities, it can determine to access the first cell in a standard access mode or a reduced capability access mode, which improves the continuity of the terminal's use of the network, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0153] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0154] Figure 1 A schematic diagram of a scenario provided for an embodiment of the present application;

[0155] Figure 2 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 1 ;

[0156] Figure 3 A schematic diagram of a method for determining a terminal access mode provided in an embodiment of the present application Figure 2 ;

[0157] Figure 4 A schematic diagram of a method for determining a terminal access mode provided in an embodiment of the present application Figure 3 ;

[0158] Figure 5 A schematic diagram of a method for determining a terminal access mode provided in an embodiment of the present application Figure 4 ;

[0159] Figure 6 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 5 ;

[0160] Figure 7 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 1 ;

[0161] Figure 8A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 2 ;

[0162] Fig. 9 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 3 ;

[0163] Fig.10 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 4 ;

[0164] Fig.11 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 5 ;

[0165] Fig.12 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application.

[0166] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0167] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0168] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0169] Below, for ease of understanding, the application scenarios of the embodiments of the present application are described.

[0170] Figure 1 A schematic diagram of a scenario provided for an embodiment of the present application. Figure 1 , including a network device 101 and a terminal 102.

[0171] The network device 101 may be a base station. The terminal 102 may be a reduced capability terminal.

[0172] The network device 101 may provide a plurality of cells of different network types. Cells of different network types may provide network services to different types of terminals.

[0173] When the terminal 102 is in a cell covered by the network device 101, the terminal 102 can establish a network connection with the cell and use the network signal provided by the network device 101 to implement network services.

[0174] The 3GPP protocol stipulates that RedCap terminals cannot access 5G networks that do not support RedCap; and stipulates that if the frequency band of the 5G network is n7 (FDD band), n38, n41, n48, n77, n78, n79, n104 (TDD band), the standard capability terminal accessing the 5G network should support 1T4R (i.e. single antenna transmission, 4 antennas reception). In other FR1 frequency bands, standard capability terminals accessing the 5G network should at least support 1T2R. In such frequency bands, the configuration requirements of 5G networks for RedCap terminals and standard capability terminals are basically the same. However, RedCap terminals cannot access 5G networks on any frequency band that does not support RedCap, which makes the continuity of the terminal's use of the network poor, resulting in a poor user experience.

[0175] In an embodiment of the present application, the terminal may support a first communication protocol with reduced capabilities and a first communication protocol with standard capabilities. The terminal may obtain a system information block (SIB) message of the first cell, and determine whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities according to the SIB message of the first cell; if the first communication protocol does not include the first communication protocol with reduced capabilities, the first cell information corresponding to the first cell may be determined; according to the first cell information, the target access method for the terminal to access the first cell is determined. Since the terminal determines that the first communication protocol of the first cell does not include the first communication protocol with reduced capabilities, it may determine to access the first cell in a standard access method or to search for a second cell to access the second cell according to the first cell information when it determines that the first communication protocol of the first cell does not include the first communication protocol with reduced capabilities; when the first communication protocol includes the first communication protocol with reduced capabilities, it may determine to access the first cell in a standard access method or a reduced capability access method, which improves the continuity of the terminal's use of the network, thereby improving the user experience.

[0176] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0177] Figure 2 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 1 . See Figure 2 , the method may include:

[0178] S201. Obtain a system information block SIB message of a first cell.

[0179] The execution subject of the embodiment of the present application may be a terminal, or a device for determining the terminal access mode set in the terminal. The device for determining the terminal access mode may be implemented by software, or by a combination of software and hardware. The device for determining the terminal access mode may be a processor in the terminal. For ease of understanding, the following description is made by taking the execution subject as an example of a terminal.

[0180] Optionally, the terminal may be a lightweight terminal. The terminal may support the first communication protocol with reduced capabilities and the first communication protocol with standard capabilities, that is, the terminal may have the ability to access the cell in a reduced capability access mode or a standard access mode. The terminal may be an electronic device such as a mobile phone or a computer.

[0181] The first communication protocol may be 5G or 6G. If the first communication protocol is 5G, the terminal may support a reduced capability 5G protocol and a standard capability 5G protocol.

[0182] Optionally, when the terminal is in an idle state, it can obtain the SIB message of the first cell.

[0183] S202. Determine, according to the SIB message of the first cell, whether the first communication protocol supported by the first cell includes a reduced-capability first communication protocol.

[0184] The first communication protocol may include a standard capability first communication protocol. The terminal may determine, based on a SIB message of the first cell, whether the first communication protocol supported by the first cell also includes a reduced capability first communication protocol.

[0185] Optionally, it can be determined whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities based on the SIB message of the first cell in the following manner: if the SIB message includes intrafrequency reselection indication information (IntraFrequency Reselection Indicator, IFRI), it can be determined that the first communication protocol includes the first communication protocol with reduced capabilities; if the SIB message does not include the IFRI message, it can be determined that the first communication protocol does not include the first communication protocol with reduced capabilities.

[0186] The IFRI message can be used to indicate whether the terminal is allowed to perform cell selection (or reselection) to a same-frequency cell, and is common to all reduced-capability terminals.

[0187] If the first communication protocol includes a first communication protocol with reduced capabilities, it means that the first cell supports access in a reduced capability access mode; if the first communication protocol does not include the first communication protocol with reduced capabilities, it means that the first cell does not support access in a reduced capability access mode but supports access in a standard access mode.

[0188] S203: If the first communication protocol does not include a reduced capability first communication protocol, determine first cell information of the first cell.

[0189] The first cell information includes at least one of the following: duplex mode, the number of receiving antennas required by a standard capability terminal for a frequency band corresponding to the first cell, an initial partial bandwidth (Bandwidth Part, BWP), and cell restriction information.

[0190] The duplexing mode may include a frequency division duplexing (FDD) mode and a time division duplexing (TDD) mode.

[0191] Optionally, the terminal may determine the first frequency of the first cell, and determine the duplex mode corresponding to the first cell according to the first frequency. If the first frequency belongs to the FDD frequency band, the duplex mode corresponding to the first cell may be determined to be the FDD mode; if the first frequency belongs to the TDD frequency band, the duplex mode corresponding to the first cell may be determined to be the TDD mode.

[0192] The number of receiving antennas that a standard-capability terminal requires to have in a frequency band corresponding to the first cell refers to the number of receiving antennas that a standard-capability terminal should have to access the first cell in the frequency band corresponding to the first cell.

[0193] Optionally, the terminal may determine the frequency band corresponding to the first cell, and then determine the number of receiving antennas required for the standard-capability terminal to have in the frequency band according to the frequency band corresponding to the first cell. For example, if the frequency band corresponding to the first cell is 2.5 GHz (gigahertz), the number of receiving antennas required for the standard-capability terminal to have in the frequency band may be 2.

[0194] The initial bandwidth BWP may be used by a terminal in an idle state to receive system information and complete random access. For example, the initial bandwidth BWP may be 20 MHz (megahertz).

[0195] The cell restriction information is for the reduced capability terminal. For example, the cell restriction information may be prohibiting the reduced capability terminal having two receiving antennas from accessing.

[0196] S204: Determine a target access mode of the terminal according to the first cell information.

[0197] The target access mode may be a reduced capability access mode or a standard access mode.

[0198] When any of the following conditions is met, the target access mode can be determined as the standard access mode:

[0199] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0200] The number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold; or,

[0201] The duplex mode is FDD mode; or,

[0202] The duplex mode is FDD mode, and the initial BWP is less than or equal to the preset threshold, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0203] The duplex mode is time division duplex TDD mode, and the number of terminal receiving antennas is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold.

[0204] The preset threshold may be 20 MHz.

[0205] In an embodiment of the present application, the terminal can obtain the system information block SIB message of the first cell, and determine whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities based on the SIB message of the first cell; if the first communication protocol does not include the first communication protocol with reduced capabilities, the terminal can determine the first cell information of the first cell, and determine the target access mode of the terminal based on the first cell information. Since the terminal can determine to access the first cell in a standard access mode based on the first cell information when determining that the first communication protocol of the first cell does not include the first communication protocol with reduced capabilities, the continuity of the terminal's use of the network is improved, thereby improving the user experience.

[0206] Below, in Figure 2 Based on the embodiment shown, combined Figure 3-Figure 6 The above method for determining the terminal access mode is further described in detail.

[0207] Figure 3 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 2 . See Figure 3 , the method may include:

[0208] S301, executing the boot-up network search process.

[0209] It should be noted that, since the terminal is in a just-started state and has not yet connected to any network, the terminal has not yet sent a terminal capability message to the first network device. The first network device may be a base station corresponding to the first cell.

[0210] S302: Obtain a system information block SIB of the first cell.

[0211] S303: Determine, according to the SIB of the first cell, whether the first communication protocol supported by the first cell includes a reduced-capability first communication protocol.

[0212] It should be noted that the execution process of steps S302-S303 can refer to steps S201-S202, and will not be repeated here.

[0213] S304: If the first communication protocol does not include a first communication protocol with reduced capability, determine first cell information, and determine, based on the first cell information, that the target access mode is a standard access mode.

[0214] If the first cell information includes at least one of the following information, it can be determined that the target access mode is a standard access mode:

[0215] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0216] The number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold; or,

[0217] The duplex mode is a frequency division duplex FDD mode; or,

[0218] The duplex mode is FDD mode, and the initial BWP is less than or equal to the preset threshold, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0219] The duplex mode is time division duplex TDD mode, and the number of terminal receiving antennas is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold.

[0220] The preset threshold may be 20 MHz.

[0221] S305: If the first communication protocol includes a reduced capability first communication protocol, determine first cell information, and determine, based on the first cell information, that the target access mode is a standard access mode or a reduced capability access mode.

[0222] Optionally, determining the target access mode as a standard access mode or a reduced capability access mode may include the following three situations:

[0223] Case 1: If the first cell information includes at least one of the following information, it can be determined that the target access mode is a reduced capability access mode or a standard access mode:

[0224] The duplex mode is FDD mode; or,

[0225] The duplex mode is FDD mode, and the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of the standard capability terminal is at least 2.

[0226] When the first communication protocol includes a reduced-capability first communication protocol and the first cell information includes that the duplex mode is an FDD mode, the terminal can determine that the target access mode is a reduced-capability access mode or a standard access mode. This is because since the terminal accesses the cell in the reduced-capability access mode or the standard access mode, the user experience on the FDD frequency band is basically the same and there is no access risk.

[0227] Case 2: If the first cell information includes at least one of the following information, it can be determined that the target access mode is a standard access mode:

[0228] The cell restriction information prohibits access by a reduced-capability terminal having two receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by a standard-capability terminal is at least two, and the number of receiving antennas of the terminal is two; or,

[0229] The cell restriction information prohibits access by reduced-capability terminals with 1 and 2 receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by standard-capability terminals is at least 2, and the number of receiving antennas of the terminal is 2.

[0230] Case 3: If the frequency band corresponding to the first cell requires that the number of receiving antennas that a standard-capability terminal has is 4, and the number of receiving antennas of the terminal is 1 or 2, then the target access mode is determined to be a reduced-capability access mode.

[0231] In this case, the duplex mode may be either the FDD mode or the TDD mode.

[0232] S306: Send a terminal capability message to the first network device.

[0233] The terminal capability message may be used to indicate that the terminal supports the first communication protocol as a standard capability.

[0234] Since the terminal does not send a terminal capability message to the first network device, after determining the target access mode, the terminal can send a terminal capability message to the first network device so that the first network device can determine the communication capability of the terminal.

[0235] S307. Access the first cell according to the target access mode.

[0236] After determining the target access mode, the terminal can use the corresponding protocol to access the first cell to be accessed according to the target access mode. For example, if the corresponding target access mode is a reduced capability access mode, the terminal can use the reduced capability first communication protocol and access the first cell according to the reduced capability access mode.

[0237] Optionally, if the target access mode is different, the capabilities that the terminal should have to access the first cell are also different.

[0238] If the target access mode is a standard access mode, the terminal has at least one of the following capabilities: support for 16 Data Radio Bearers (DRBs); 18-bit Packet Data Convergence Protocol Sequence Number (PDCP SN) length; 18-bit Radio Link Control Acknowledge Mode Serial Number (RLC AM SN) length; Physical Downlink Shared Channel (PDSCH) should support 256 Quadrature Amplitude Modulation (QAM) in frequency range 1; no need to support early identification of reduced capability terminals during random access; no need to carry reduced capability information in terminal capability messages; support Carrier Aggregation (CA), multi-rate dual connectivity (MR-DC), Dual Active Protocol Stack (DAPS), Conditional PSCell Addition or Change (CPAC) and Integrated Access and Backhaul (IAC). Backhaul, IAB) function.

[0239] If the target access mode is a reduced capability access mode, the terminal shall have at least one of the following capabilities: support 8 DRBs; support a PDCP SN length of 12 bits; support an RLC AM SN length of 12 bits; PDSCH shall support 64QAM modulation in frequency range 1; support early identification of reduced capability terminals during random access; support carrying reduced capability information in terminal capability messages.

[0240] Optionally, since the terminal can support the reduced-capability first communication protocol and the standard-capability first communication protocol, the terminal can set a first priority for the reduced-capability first communication protocol and a second priority for the standard-capability first communication protocol.

[0241] In an embodiment of the present application, the terminal can perform a power-on network search process, and can obtain the system information block SIB of the first cell, and determine whether the first communication protocol supported by the first cell includes a first communication protocol with reduced capabilities according to the SIB of the first cell. If the first communication protocol does not include the first communication protocol with reduced capabilities, the terminal can determine the first cell information, and determine the target access method as a standard access method according to the first cell information; if the first communication protocol includes the first communication protocol with reduced capabilities, the terminal can determine the first cell information, and determine the target access method as a standard access method or a reduced capability access method according to the first cell information. The terminal can also send a terminal capability message to the first network device and access the first cell according to the target access method. Since when the first communication protocol includes the first communication protocol with reduced capabilities, the terminal can determine the target access method as a standard access method or a reduced capability access method, and access the first cell in a standard access method or a reduced capability access method; when the first communication protocol does not include the first communication protocol with reduced capabilities, the terminal can determine the target access method as a standard access method, and access the first cell in a standard access method, which improves the continuity of the terminal's use of the network, thereby improving the user experience.

[0242] Figure 4 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 3 . See Figure 4 , the method may include:

[0243] S401. Access a third cell supporting a second communication protocol from an access state of a first communication protocol with reduced capabilities, or from an access state of a first communication protocol with standard capabilities.

[0244] Optionally, the first communication protocol is a 5G protocol or a 6G protocol; and the second communication protocol is lower than the first communication protocol:

[0245] If the first communication protocol is a 5G protocol, the second communication protocol is a 4G protocol; if the first communication protocol is a 6G protocol, the second communication protocol is a 5G protocol.

[0246] The third cell is a cell accessed by the terminal before accessing the first cell. The third cell may support the second communication protocol. For example, if the second communication protocol is a 4G protocol, the third cell supports the 4G protocol.

[0247] S402: When the terminal is in an idle state, obtain the SIB of the third cell, and after a preset reselection condition is met, initiate search and measurement to the first cell.

[0248] Optionally, the preset reselection condition may be that the reference signal reception quality of the third cell is less than a first threshold and / or the reference signal reception power is less than a second threshold.

[0249] The first cell may be a neighboring cell of the third cell. The terminal may obtain a SIB message of the third cell, the SIB message may include frequency information of the first cell, and the terminal may initiate search and measurement to the first cell according to the frequency information of the first cell.

[0250] Optionally, the terminal may measure a reference signal received power (Reference Signal Received Power, RSRP) and a reference signal received quality (Reference Signal Receiving Quality, RSRQ) of the first cell to obtain a measurement result of the first cell.

[0251] S403: Obtain a system information block SIB of the first cell.

[0252] S404: Determine, according to the SIB of the first cell, whether the first communication protocol supported by the first cell includes a reduced-capability first communication protocol.

[0253] It should be noted that the execution process of steps S403-S404 can refer to steps S201-S202, which will not be repeated here.

[0254] S405: If the first communication protocol does not include a first communication protocol with reduced capability, determine first cell information, and determine, based on the first cell information, that the target access mode is a standard access mode.

[0255] S406: If the first communication protocol includes a reduced capability first communication protocol, determine first cell information, and determine, based on the first cell information, that the target access mode is a standard access mode or a reduced capability access mode.

[0256] It should be noted that the execution process of steps S405-S406 can refer to steps S304-S305, which will not be repeated here.

[0257] S407. Access the first cell according to the target access mode.

[0258] It should be noted that the execution process of step S407 can refer to step S307, which will not be described in detail here.

[0259] S408: Send a terminal capability update message to the first network device.

[0260] The terminal capability update message may be used to indicate that the first communication protocol supported by the terminal is updated.

[0261] Since the terminal has accessed the third cell before accessing the first cell, the terminal has sent a terminal capability message to the network. After determining the target access mode, the terminal can send a terminal capability update message to the first network device so that the first network device can determine the first communication protocol currently supported by the terminal. The first network device can send a network indication or network parameters to the terminal according to the terminal capability update message.

[0262] If the target access mode is a standard capability access mode, the terminal capability update information may include that the terminal supports the first communication protocol of standard capability, to indicate that the terminal has standard access capability; if the target access mode is a reduced capability access mode, the terminal capability update information may include that the terminal supports the first communication protocol of reduced capability, to indicate that the terminal has reduced access capability. Optionally, in the terminal capability update message, "support" may be displayed in the field of supporting reduced capability, to indicate that the terminal supports the first communication protocol of reduced capability; if the first communication protocol of reduced capability is not supported, there is no such item in the terminal capability update message.

[0263] In an embodiment of the present application, the terminal can access a third cell supporting the second communication protocol from an access state of a first communication protocol with reduced capabilities, or from an access state of a first communication protocol with standard capabilities. When the terminal is in an idle state, the terminal can obtain the SIB of the third cell, and after meeting the preset reselection conditions, initiate search and measurement to the first cell. The terminal can obtain the system information block SIB of the first cell, and determine whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities based on the SIB of the first cell. If the first communication protocol does not include the first communication protocol with reduced capabilities, the first cell information is determined, and the target access method is determined to be the standard access method based on the first cell information. If the first communication protocol includes the first communication protocol with reduced capabilities, the first cell information is determined, and the target access method is determined to be the standard access method or the reduced capability access method based on the first cell information. The terminal can access the first cell according to the target access method and send a terminal capability update message to the first network device. Because when the first communication protocol includes a first communication protocol with reduced capabilities, the terminal can determine that the target access mode is a standard access mode or a reduced capability access mode, and access the first cell in the standard access mode or the reduced capability access mode; when the first communication protocol does not include the first communication protocol with reduced capabilities, the terminal can determine that the target access mode is a standard access mode, and access the first cell in the standard access mode, which improves the continuity of the terminal's use of the network, thereby improving the user experience.

[0264] Figure 5 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 4 . See Figure 5 , the method may include:

[0265] S501. Access a third cell from an access state of a first communication protocol with reduced capability, or from an access state of a first communication protocol with standard capability.

[0266] Optionally, if the third cell supports the first communication protocol with reduced capabilities, the terminal may access the third cell using the first communication protocol with reduced capabilities; if the third cell supports the first communication protocol with standard capabilities, the terminal may access the third cell using the first communication protocol with standard capabilities.

[0267] S502: When the terminal is in an idle state, obtain the SIB of the third cell, and after a preset reselection condition is met, initiate search and measurement to the first cell.

[0268] Optionally, the preset reselection condition may be that the signal quality acquired by the terminal in the third cell is lower than a preset quality.

[0269] The first cell may be a neighboring cell of the third cell. The terminal may obtain a SIB message of the third cell, the SIB message may include frequency information of the first cell, and the terminal may initiate search and measurement to the first cell according to the frequency information of the first cell.

[0270] Optionally, the terminal may measure the RSRP and RSRQ of the first cell to obtain a measurement result of the first cell.

[0271] The first communication protocols supported by the third cell and the first cell may be different. For example, if the third cell supports the first communication protocol with reduced capabilities, the first cell may support the first communication protocol with standard capabilities; if the third cell supports the first communication protocol with standard capabilities, the first cell may support the first communication protocol with reduced capabilities.

[0272] S503: Obtain a system information block SIB of the first cell.

[0273] S504: Determine, according to the SIB of the first cell, whether the first communication protocol supported by the first cell includes a reduced-capability first communication protocol.

[0274] It should be noted that the execution process of steps S503-S504 can refer to steps S201-S202, which will not be repeated here.

[0275] S505: If the first communication protocol does not include a first communication protocol with reduced capability, determine first cell information, and determine, based on the first cell information, that the target access mode is a standard access mode.

[0276] S506: If the first communication protocol includes a reduced capability first communication protocol, determine first cell information, and determine, based on the first cell information, that the target access mode is a standard access mode or a reduced capability access mode.

[0277] It should be noted that the execution process of steps S505-S506 can refer to steps S304-S305, and will not be repeated here.

[0278] S507. Access the first cell according to the target access mode.

[0279] It should be noted that the execution process of step S507 can refer to step S307, which will not be described in detail here.

[0280] S508: Send a terminal capability update message to the first network device.

[0281] The terminal capability update message may be used to indicate that the first communication protocol supported by the terminal is updated.

[0282] Since the terminal has accessed the third cell before accessing the first cell, the terminal has sent a terminal capability message to the network. After determining the target access mode, the terminal can send a terminal capability update message to the first network device so that the first network device can determine the first communication protocol currently supported by the terminal. The first network device can send a network indication or network parameters to the terminal according to the terminal capability update message.

[0283] If the target access method is a standard capability access method, the terminal capability update information may include that the terminal supports the first communication protocol of standard capabilities, to indicate that the terminal has standard access capabilities; if the target access method is a reduced capability access method, the terminal capability update information may include that the terminal supports the first communication protocol of reduced capabilities, to indicate that the terminal has reduced access capabilities.

[0284] In an embodiment of the present application, the terminal accesses the third cell from the access state of the first communication protocol with reduced capabilities, or from the access state of the first communication protocol with standard capabilities. When the terminal is in an idle state, the terminal can obtain the SIB of the third cell, and after meeting the preset reselection conditions, initiate search and measurement to the first cell. The terminal can obtain the system information block SIB of the first cell, and determine whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities based on the SIB of the first cell. If the first communication protocol does not include the first communication protocol with reduced capabilities, the first cell information is determined, and according to the first cell information, the target access method is determined to be the standard access method. If the first communication protocol includes the first communication protocol with reduced capabilities, the first cell information is determined, and according to the first cell information, the target access method is determined to be the standard access method or the reduced capability access method. The terminal can access the first cell according to the target access method, and send a terminal capability update message to the first network device. Because when the first communication protocol includes a first communication protocol with reduced capabilities, the terminal can determine that the target access mode is a standard access mode or a reduced capability access mode, and access the first cell in the standard access mode or the reduced capability access mode; when the first communication protocol does not include a first communication protocol with reduced capabilities, the terminal can determine that the target access mode is a standard access mode, and access the first cell in the standard access mode, thereby improving the continuity of the terminal's use of the network, thereby improving the user experience.

[0285] Figure 6 A flow chart of a method for determining a terminal access mode provided in an embodiment of the present application Figure 5 . See Figure 6 , the method may include:

[0286] S601. Obtain a system information block SIB of a first cell.

[0287] S602: Determine, according to the SIB of the first cell, whether a first communication protocol supported by the first cell includes a reduced-capability first communication protocol.

[0288] It should be noted that the execution process of steps S601-S602 can refer to steps S201-S202, which will not be repeated here.

[0289] S603: Determine the first cell information, and determine that the terminal does not access the first cell according to whether the first communication protocol supported by the first cell includes the reduced capability first communication protocol and the first cell information.

[0290] Optionally, determining that the terminal does not access the first cell may include the following two situations:

[0291] Case 1: If the first communication protocol does not include a first communication protocol with reduced capability, and if the first cell information includes at least one of the following information, considering the compatibility risk, it can be determined that the terminal does not access the first cell:

[0292] The duplex mode is TDD mode; or,

[0293] The duplex mode is TDD mode, and the initial BWP is greater than a preset threshold; or,

[0294] The duplex mode is TDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas that a standard capability terminal has is 4.

[0295] Case 2: If the first communication protocol includes a reduced capability first communication protocol; and if the cell restriction information prohibits access by a reduced capability terminal having 1 receiving antenna, and the number of receiving antennas of the terminal is 1, it is determined that the terminal does not access the first cell.

[0296] S604: Search for a second cell and determine the cell type of the second cell.

[0297] Optionally, after the terminal determines not to access the first cell, it can continue to search for the second cell and determine the cell type of the second cell. The cell type may include a 5G cell, a 4G cell, a 3G cell, and a 2G cell.

[0298] S605: Access a second cell according to the cell type and terminal capability.

[0299] Terminal capabilities include whether the terminal supports 5G, 4G, 3G or 2G.

[0300] If the cell type of the second cell is a 5G cell and the terminal supports 5G, access the second cell in a 5G access mode;

[0301] If the cell type of the second cell is a 4G cell and the terminal supports 4G, accessing the second cell in a 4G access mode;

[0302] If the cell type of the second cell is a 3G cell and the terminal supports 3G, accessing the second cell in a 3G access mode;

[0303] If the cell type of the second cell is a 2G cell and the terminal supports 2G, the second cell is accessed in a 2G access mode.

[0304] In an embodiment of the present application, the terminal may obtain the system information block SIB of the first cell, and determine whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities based on the SIB of the first cell. The terminal may determine the first cell information, and determine that the terminal does not access the first cell based on whether the first communication protocol supported by the first cell includes the first communication protocol with reduced capabilities and the first cell information. After determining not to access the first cell, the terminal may search for the second cell and determine the cell type of the second cell, and then access the second cell based on the second cell type and the terminal capabilities. Since the terminal can search for the second cell to access the second cell after determining not to access the first cell, the continuity of the terminal's use of the network is improved, thereby improving the user experience.

[0305] Figure 7 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 1 . See Figure 7 The device 10 for determining the terminal access mode includes: an acquisition module 11, a first determination module 12, a second determination module 13 and a third determination module 14, wherein:

[0306] The acquisition module 11 is used to acquire a system information block SIB of the first cell, and the terminal supports a first communication protocol with reduced capability and a first communication protocol with standard capability;

[0307] The first determination module 12 is used to determine, according to the SIB of the first cell, whether the first communication protocol supported by the first cell includes a reduced capability first communication protocol, and the first communication protocol includes a standard capability first communication protocol;

[0308] The second determination module 13 is used to determine the first cell information of the first cell if the first communication protocol does not include the first communication protocol with reduced capability, the first cell information including at least one of the following: duplex mode, the number of receiving antennas required for the standard capability terminal by the frequency band corresponding to the first cell, the initial partial bandwidth BWP, and cell restriction information;

[0309] The third determination module 14 is used to determine a target access mode of the terminal according to the first cell information.

[0310] The device for determining the terminal access mode provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0311] In a possible implementation manner, the third determining module 14 is specifically configured to:

[0312] When any of the following conditions is met, the target access mode is determined to be a standard access mode:

[0313] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0314] The number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to a preset threshold; or,

[0315] The duplex mode is a frequency division duplex FDD mode; or,

[0316] The duplex mode is an FDD mode, and the initial BWP is less than or equal to the preset threshold, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or,

[0317] The duplex mode is a time division duplex TDD mode, the number of receiving antennas of the terminal is 2, the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold.

[0318] In a possible implementation manner, the third determining module 14 is further configured to:

[0319] When any of the following conditions is met, it is determined that the terminal does not access the first cell:

[0320] The duplex mode is a TDD mode; or,

[0321] The duplex mode is a TDD mode, and the initial BWP is greater than a preset threshold; or,

[0322] The duplex mode is a TDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas that a standard-capability terminal has is 4.

[0323] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the third determination module 14 is further configured to:

[0324] When any of the following conditions is met, the target access mode is determined to be a reduced capability access mode or a standard access mode:

[0325] The duplex mode is FDD mode; or,

[0326] The duplex mode is an FDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2.

[0327] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the third determination module 14 is further configured to:

[0328] When any of the following conditions is met, the target access mode is determined to be a standard access mode:

[0329] The cell restriction information prohibits access by a reduced-capability terminal having two receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by a standard-capability terminal is at least two, and the number of receiving antennas of the terminal is two; or,

[0330] The cell restriction information prohibits access by reduced-capability terminals having 1 and 2 receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by standard-capability terminals is at least 2, and the number of receiving antennas of the terminal is 2.

[0331] In a possible implementation manner, if the first communication protocol includes a reduced capability first communication protocol; the third determination module 14 is further configured to:

[0332] The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is 4, and the number of receiving antennas of the terminal is 1 or 2, then determining that the target access mode is a reduced-capability access mode;

[0333] The cell restriction information prohibits a reduced-capability terminal having one receiving antenna from accessing, and the number of receiving antennas of the terminal is 1, then it is determined that the terminal does not access the first cell.

[0334] The device for determining the terminal access mode provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0335] Figure 8 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 2 . See Figure 8 ,exist Figure 7 Based on the device shown, the device 10 for determining the terminal access mode further includes an access module 15, wherein:

[0336] The access module 15 is used to access the first cell according to the target access mode.

[0337] In a possible implementation manner, if the target access mode is a standard access mode, the terminal has at least one of the following capabilities:

[0338] Supports 16 data radio bearers (DRBs);

[0339] 18-bit Packet Data Convergence Protocol Sequence Number PDCP SN length;

[0340] 18-bit length of the Radio Link Control Protocol Acknowledgement Mode Sequence Number RLC AM SN;

[0341] In frequency range 1, the physical downlink channel PDSCH should support 256 quadrature amplitude modulation QAM;

[0342] There is no need to support early identification of reduced-capability terminals during random access;

[0343] There is no need to carry capability reduction information in the terminal capability message;

[0344] Supports carrier aggregation CA, multi-standard dual connectivity MR-DC, dual activation protocol stack DAPS, conditional primary and secondary cell addition or change CPAC and integrated access backhaul IAB function.

[0345] In a possible implementation manner, if the target access mode is a reduced capability access mode, the terminal has at least one of the following capabilities:

[0346] Supports 8 DRBs;

[0347] Support 12-bit PDCP SN length;

[0348] Support 12-bit RLC AM SN length;

[0349] In frequency range 1, PDSCH should support 64QAM modulation;

[0350] Support early identification of reduced-capability terminals during random access;

[0351] Supporting carrying capability reduction information in the terminal capability message.

[0352] The device for determining the terminal access mode provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0353] Fig. 9 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 3 . See Fig. 9 , in the Figure 7Based on the device shown, the device 10 for determining the terminal access mode further includes an access module 15 and a search module 16, wherein:

[0354] In a possible implementation, the search module 16 is used to:

[0355] searching for a second cell and determining a cell type of the second cell;

[0356] The access module 15 is further configured to access a second cell according to the cell type and terminal capability.

[0357] In a possible implementation manner, the access module 15 is specifically configured to:

[0358] If the cell type of the second cell is a 5G cell and the terminal supports 5G, access the second cell in a 5G access mode;

[0359] If the cell type of the second cell is a 4G cell and the terminal supports 4G, accessing the second cell in a 4G access mode;

[0360] If the cell type of the second cell is a 3G cell and the terminal supports 3G, accessing the second cell in a 3G access mode;

[0361] If the cell type of the second cell is a 2G cell and the terminal supports 2G, the second cell is accessed in a 2G access mode.

[0362] Fig.10 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 4 . See Fig.10 , in the Figure 8 Based on the device shown, the device 10 for determining the terminal access mode further includes an execution module 17 and a sending module 18, wherein:

[0363] In a possible implementation manner, before acquiring the system information block SIB of the first cell,

[0364] The execution module 17 is used to execute the boot-up network search process;

[0365] Before accessing the first cell according to the target access mode, the method further includes:

[0366] The sending module 18 is used to send the terminal capability message to the first network device, where the terminal capability message is used to indicate that the terminal supports a first communication protocol with standard capability.

[0367] The device for determining the terminal access mode provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0368] Fig.11 A schematic diagram of a device for determining a terminal access mode provided in an embodiment of the present application Figure 5 . See Fig.11 , in the Figure 8 Based on the device shown, the device 10 for determining the terminal access mode further includes a measuring module 19 and a sending module 18, wherein:

[0369] In a possible implementation manner, before acquiring the system information block SIB of the first cell,

[0370] The access module 15 is further configured to access a third cell supporting the second communication protocol from an access state of the first communication protocol with reduced capability, or from an access state of the first communication protocol with standard capability;

[0371] The acquisition module 11 is further configured to, when the terminal is in an idle state, acquire the SIB of the third cell;

[0372] The measurement module 19 is used to initiate search and measurement to the first cell after a preset reselection condition is met;

[0373] After accessing the first cell according to the target access mode, the method further includes:

[0374] The sending module 18 is further used to send a terminal capability update message to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated.

[0375] In a possible implementation manner, the first communication protocol is a 5G protocol or a 6G protocol; and the second communication protocol is lower than the first communication protocol:

[0376] If the first communication protocol is a 5G protocol, the second communication protocol is a 4G protocol;

[0377] If the first communication protocol is the 6G protocol, the second communication protocol is the 5G protocol.

[0378] In a possible implementation manner, before acquiring the system information block SIB of the first cell,

[0379] The access module 15 is further configured to access the third cell from an access state of the first communication protocol with reduced capability or from an access state of the first communication protocol with standard capability;

[0380] The acquisition module 11 is further configured to, when the terminal is in an idle state, acquire the SIB of the third cell;

[0381] The measurement module 19 is further configured to initiate search and measurement on the first cell after a preset reselection condition is met;

[0382] After accessing the first cell according to the target access mode, the method further includes:

[0383] The sending module 18 is further used to send a terminal capability update message to the first network device, wherein the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated, and the first communication protocol supported by the third cell is different from that supported by the first cell.

[0384] The device for determining the terminal access mode provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0385] Fig.12 This is a schematic diagram of the structure of the terminal device provided in the embodiment of the present application. Fig.12 The terminal device 20 may include: a memory 21 and a processor 22. Exemplarily, the memory 21 and the processor 22 are interconnected via a bus 23.

[0386] The memory 21 is used to store program instructions;

[0387] The processor 22 is used to execute the program instructions stored in the memory, so as to enable the terminal 20 to execute the method shown in the above method embodiment.

[0388] Fig.12 The terminal device shown may be the terminal described in any of the above embodiments.

[0389] The terminal device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0390] An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above method.

[0391] The embodiment of the present application may also provide a computer program product, including a computer program, which can implement the above method when executed by a processor.

[0392] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0393] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0394] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0395] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0396] If the integrated unit / module is implemented in the form of hardware, the hardware may be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. If not specifically stated, the processor may be any appropriate hardware processor, such as a CPU, a GPU, an FPGA, a DSP, an ASIC, etc. If not specifically stated, the storage unit may be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc.

[0397] If the integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0398] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0399] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0400] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for determining a terminal access mode, characterized in that: include: Acquire a system information block SIB of the first cell, where the terminal supports a first communication protocol with reduced capabilities and a first communication protocol with standard capabilities; Determining, according to the SIB of the first cell, whether a first communication protocol supported by the first cell includes a reduced-capability first communication protocol, the first communication protocol including a standard-capability first communication protocol; If the first communication protocol does not include the first communication protocol with reduced capability, determining first cell information of the first cell, the first cell information including at least one of the following: a duplex mode, a number of receiving antennas required for a standard capability terminal by a frequency band corresponding to the first cell, an initial partial bandwidth BWP, and cell restriction information; A target access mode of the terminal is determined according to the first cell information.

2. The method according to claim 1, characterized in that Determining, according to the first cell information, a target access mode for the terminal to access the first cell, includes: When any of the following conditions is met, the target access mode is determined to be a standard access mode: The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard-capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or, The number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to a preset threshold; or, The duplex mode is a frequency division duplex FDD mode; or, The duplex mode is an FDD mode, and the initial BWP is less than or equal to the preset threshold, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the number of receiving antennas of the terminal is 2; or, The duplex mode is a time division duplex TDD mode, the number of receiving antennas of the terminal is 2, the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2, and the initial BWP is less than or equal to the preset threshold.

3. The method according to claim 1, characterized in that: The method further comprises: When any of the following conditions is met, it is determined that the terminal does not access the first cell: The duplex mode is a TDD mode; or, The duplex mode is a TDD mode, and the initial BWP is greater than a preset threshold; or, The duplex mode is a TDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas that a standard-capability terminal has is 4.

4. The method according to claim 1, characterized in that If the first communication protocol includes a reduced capability first communication protocol; the method further includes: When any of the following conditions is met, the target access mode is determined to be a reduced capability access mode or a standard access mode: The duplex mode is FDD mode; or, The duplex mode is an FDD mode, the number of receiving antennas of the terminal is 2, and the frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is at least 2.

5. The method according to claim 1, characterized in that If the first communication protocol includes a reduced capability first communication protocol; the method further includes: When any of the following conditions is met, the target access mode is determined to be a standard access mode: The cell restriction information prohibits access by a reduced-capability terminal having two receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by a standard-capability terminal is at least two, and the number of receiving antennas of the terminal is two; or The cell restriction information prohibits access by reduced-capability terminals having 1 or 2 receiving antennas, and the frequency band corresponding to the first cell requires that the number of receiving antennas possessed by standard-capability terminals is at least 2, and the number of receiving antennas of the terminal is 2.

6. The method according to claim 1, characterized in that If the first communication protocol includes a reduced capability first communication protocol; the method further includes: The frequency band corresponding to the first cell requires that the number of receiving antennas of a standard capability terminal is 4, and the number of receiving antennas of the terminal is 1 or 2, then determining that the target access mode is a reduced capability access mode; The cell restriction information prohibits a reduced-capability terminal having one receiving antenna from accessing, and the number of receiving antennas of the terminal is 1, then it is determined that the terminal does not access the first cell.

7. The method according to any one of claims 1-2 or 4-6, characterized in that: After determining the target access mode of the terminal, the method further includes: Access the first cell according to the target access mode.

8. The method according to claim 7, characterized in that If the target access mode is a standard access mode, the terminal has at least one of the following capabilities: Supports 16 data radio bearers (DRBs); 18-bit Packet Data Convergence Protocol Sequence Number PDCP SN length; 18-bit length of the Radio Link Control Protocol Acknowledgement Mode Sequence Number RLC AM SN; In frequency range 1, the physical downlink channel PDSCH should support 256 quadrature amplitude modulation QAM; There is no need to support early identification of reduced-capability terminals during random access; There is no need to carry capability reduction information in the terminal capability message; Supports carrier aggregation CA, multi-standard dual connectivity MR-DC, dual activation protocol stack DAPS, conditional primary and secondary cell addition or change CPAC and integrated access backhaul IAB function.

9. The method according to claim 7, characterized in that: If the target access mode is a reduced capability access mode, the terminal has at least one of the following capabilities: Supports 8 DRBs; Support 12-bit PDCP SN length; Support 12-bit RLC AM SN length; In frequency range 1, PDSCH should support 64QAM modulation; Support early identification of reduced-capability terminals during random access; Supporting carrying capability reduction information in the terminal capability message.

10. The method according to claim 3 or 6, characterized in that: After determining not to access the first cell, the method further includes: searching for a second cell and determining a cell type of the second cell; Access the second cell according to the cell type and terminal capability.

11. The method according to claim 10, characterized in that Accessing the second cell according to the cell type and the terminal capability includes: If the cell type of the second cell is a 5G cell and the terminal supports 5G, access the second cell in a 5G access mode; If the cell type of the second cell is a 4G cell and the terminal supports 4G, accessing the second cell in a 4G access mode; If the cell type of the second cell is a 3G cell and the terminal supports 3G, accessing the second cell in a 3G access mode; If the cell type of the second cell is a 2G cell and the terminal supports 2G, the second cell is accessed in a 2G access mode.

12. The method according to any one of claims 1 to 9, characterized in that: Before acquiring the system information block SIB of the first cell, the method further includes: Execute the boot-up network search process; Before accessing the first cell according to the target access mode, the method further includes: The terminal capability message is sent to the first network device, where the terminal capability message is used to indicate that the terminal supports a first communication protocol with standard capability.

13. The method according to any one of claims 1 to 9, characterized in that: Before acquiring the system information block SIB of the first cell, the method further includes: Accessing a third cell supporting the second communication protocol from an access state of the first communication protocol with reduced capabilities, or from an access state of the first communication protocol with standard capabilities; When the terminal is in an idle state, acquiring the SIB of the third cell, and after a preset reselection condition is met, initiating search and measurement to the first cell; After accessing the first cell according to the target access mode, the method further includes: A terminal capability update message is sent to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated.

14. The method according to claim 13, characterized in that The first communication protocol is a 5G protocol or a 6G protocol; the second communication protocol is lower than the first communication protocol: If the first communication protocol is a 5G protocol, the second communication protocol is a 4G protocol; If the first communication protocol is the 6G protocol, the second communication protocol is the 5G protocol.

15. The method according to any one of claims 1 to 9, characterized in that: Before acquiring the system information block SIB of the first cell, the method further includes: Accessing the third cell from an access state of the first communication protocol with reduced capabilities, or from an access state of the first communication protocol with standard capabilities; When the terminal is in an idle state, acquiring the SIB of the third cell, and after a preset reselection condition is met, initiating search and measurement to the first cell; After accessing the first cell according to the target access mode, the method further includes: A terminal capability update message is sent to the first network device, where the terminal capability update message is used to indicate that a first communication protocol supported by the terminal is updated, and the first communication protocol supported by the third cell is different from that supported by the first cell.

16. A device for determining a terminal access mode, characterized in that: include: an acquisition module, a first determination module, a second determination module and a third determination module, wherein: The acquisition module is used to acquire a system information block SIB of the first cell, and the terminal supports a first communication protocol with reduced capability and a first communication protocol with standard capability; The first determination module is used to determine, according to the SIB of the first cell, whether the first communication protocol supported by the first cell includes a reduced capability first communication protocol, and the first communication protocol includes a standard capability first communication protocol; The second determination module is used to determine the first cell information of the first cell if the first communication protocol does not include the first communication protocol with reduced capability, the first cell information including at least one of the following: duplex mode, the number of receiving antennas required by the standard capability terminal for the frequency band corresponding to the first cell, the initial partial bandwidth BWP, and cell restriction information; The third determination module is used to determine a target access mode of the terminal according to the first cell information.

17. A terminal device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 15.

18. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 15 when executed by a processor.

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