Information transmission method, network access method, apparatus, and device

Abstract

The application provides an information transmission method, a network access method, a device and equipment. The method comprises the following steps: after obtaining a measurement report of a second cell sent by a terminal, sending a handover request message to the second cell; receiving an acknowledgement message sent by the second cell based on the handover request message; in the case that the acknowledgement message comprises a first system message of the second cell, obtaining a second system message of the second cell according to terminal capability information of the terminal and the first system message, the second system message being adapted to the terminal capability, and the first system message being a system message of the second cell; and when sending a cell handover indication message to the terminal, sending the second system message. By sending the second system message of the second cell adapted to the terminal capability to the terminal, the terminal can initiate random access to the second cell based on the second system message, thereby accessing the second cell and ensuring normal communication of the terminal.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an information transmission method, a network access method, an apparatus, and a device. Background Technology

[0002] In the prior art, the terminal that switches to the target cell obtains the system information of the target cell in the following two ways.

[0003] In Method 1, during the handover preparation process, the system messages of the target cell are encapsulated in a Target to Source Transparent Container and forwarded to the source cell that the terminal has already accessed. The source cell then transmits these messages to the terminal. In other words, the RRC reconfiguration message sent from the source cell to the terminal can include the system messages and network configuration information of the target cell that are received from the target cell and are transmitted to the terminal, so that the terminal can accurately find the relevant resource location for random access after arriving at the target cell.

[0004] Method 2: The terminal independently reads the system messages of the target cell.

[0005] However, a certain type of on-network terminal, when obtaining system information from the target cell through the above two methods and discovering that the network-side carrier bandwidth exceeds the terminal-side carrier bandwidth support capability, is unable to initiate a random access procedure. Summary of the Invention

[0006] The purpose of this invention is to provide an information transmission method, network access method, apparatus, and device to solve the problem that a certain type of terminal cannot access the target cell when the network side parameters corresponding to the target cell are incompatible with the terminal's capabilities.

[0007] To achieve the above objectives, the present invention provides an information transmission method applied to a first network-side device, wherein the first network-side device is a network-side device belonging to a first cell serving a terminal, comprising:

[0008] After receiving the measurement report of the second cell sent by the terminal, a handover request message is sent to the second cell;

[0009] Receive the confirmation message sent by the second cell based on the handover request message;

[0010] When the confirmation message includes the first system message of the second cell, the second system message of the second cell is obtained based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell.

[0011] When sending a cell handover instruction message to the terminal, the second system message is sent.

[0012] The step of obtaining the second system message of the second cell based on the terminal capability information of the terminal and the first system message includes:

[0013] Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capabilities are updated to parameters that are compatible with the terminal capabilities, thereby obtaining the second system message.

[0014] The handover request message includes target information, which is used to instruct the second cell to generate the second system message. The target information includes first indication information and / or the terminal capability information.

[0015] After receiving the confirmation message sent by the second cell based on the handover request message, the method further includes:

[0016] If the confirmation message includes the second system message, and a cell handover indication message is sent to the terminal, then the second system message is sent.

[0017] When sending a cell handover indication message to the terminal, sending the second system message includes:

[0018] Send a cell handover indication message to the terminal, wherein the cell handover indication information includes the second system message;

[0019] Alternatively, when sending a cell handover instruction message to the terminal, the second system message may be sent simultaneously.

[0020] The method further includes, before sending a handover request message to the second cell after obtaining the measurement report from the terminal, the method also includes:

[0021] If the attribute information of the terminal is identified as that of the first terminal, or if the frequency of the terminal reporting measurement reports for the first frequency point is greater than a preset threshold, but it cannot access the first frequency point and always stays on the second frequency point with a lower access priority than the first frequency point, then the terminal is determined to be the first terminal.

[0022] The present invention also provides an information transmission method applied to a second network-side device, wherein the second network-side device is the network-side device to which the second cell to be handed over by the terminal belongs, comprising:

[0023] Receive the handover request message sent by the first cell;

[0024] According to the handover request message, a confirmation message is sent to the first cell. The confirmation message includes a first system message of the second cell, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities, wherein the first system message is a system message of the second cell.

[0025] The method further includes, after receiving the handover request message sent by the first cell:

[0026] When the handover request message includes target information, the target information is used to instruct the second cell to generate the second system message, and the target information includes first indication information and / or the terminal capability information, the terminal capability information is obtained.

[0027] Based on the terminal capability information and the first system message of the second cell, the second system message of the second cell is obtained;

[0028] A confirmation message is sent to the first cell, the confirmation message including the second system message of the second cell.

[0029] The step of obtaining the second system message of the second cell based on the terminal capability information and the first system message of the second cell includes:

[0030] Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capabilities are updated to parameters that are compatible with the terminal capabilities, thereby obtaining the second system message.

[0031] The present invention also provides a network access method, applied to a terminal, comprising:

[0032] When receiving a cell handover indication message from the first cell, the terminal receives a second system message from the second cell, which is adapted to the terminal's capabilities.

[0033] Based on the message from the second system, a random access is initiated to the second cell.

[0034] The second system message is generated by the second cell, and the first cell transmits the second system message.

[0035] The second system message is generated by the first cell.

[0036] Specifically, before receiving the second system message from the second cell after receiving the cell handover indication message from the first cell, the method further includes:

[0037] The measurement report of the second cell is sent to the first cell, and the measurement report is used to trigger the first cell to send a handover request message to the second cell.

[0038] The present invention also provides an information transmission device, including

[0039] The first sending module is used to send a handover request message to the second cell after receiving the measurement report of the second cell sent by the terminal;

[0040] The first receiving module is used to receive the confirmation message sent by the second cell based on the handover request message;

[0041] The first acquisition module is configured to, when the confirmation message includes the first system message of the second cell, obtain the second system message of the second cell based on the terminal capability information of the terminal and the first system message, wherein the second system message is adapted to the terminal capability of the terminal and the first system message is the system message of the second cell;

[0042] The second sending module is used to send the second system message when sending a cell handover indication message to the terminal.

[0043] The present invention also provides an information transmission device, comprising:

[0044] The second receiving module is used to receive the handover request message sent by the first cell;

[0045] The fourth sending module is configured to send an acknowledgment message to the first cell according to the handover request message. The acknowledgment message includes a first system message of the second cell, so that the first cell obtains a second system message of the second cell based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, wherein the first system message is a system message of the second cell.

[0046] The present invention also provides a network access device, comprising:

[0047] The third receiving module is used to receive a second system message from the second cell when receiving a cell handover indication message sent by the first cell. The second system message is adapted to the terminal capabilities of the terminal.

[0048] The network access module is used to initiate random access to the second cell based on the second system message.

[0049] The present invention also provides a first network-side device, which is a network-side device serving a first cell of a terminal, including a processor and a transceiver. The transceiver receives and transmits data under the control of the processor, and the processor is used to perform the following operations:

[0050] After receiving the measurement report of the second cell sent by the terminal, a handover request message is sent to the second cell;

[0051] Receive the confirmation message sent by the second cell based on the handover request message;

[0052] When the confirmation message includes the first system message of the second cell, the second system message of the second cell is obtained based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell.

[0053] When sending a cell handover instruction message to the terminal, the second system message is sent.

[0054] The present invention also provides a second network-side device, which is the network-side device to which the second cell to which the terminal is to be handed over belongs, including a processor and a transceiver. The transceiver receives and transmits data under the control of the processor, and the transceiver is used to perform the following operations:

[0055] Receive the handover request message sent by the first cell;

[0056] According to the handover request message, a confirmation message is sent to the first cell. The confirmation message includes a first system message of the second cell, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities, wherein the first system message is a system message of the second cell.

[0057] The present invention also provides a terminal, including a processor and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, and the transceiver is used to perform the following operations:

[0058] When receiving a cell handover indication message from the first cell, the terminal receives a second system message from the second cell, which is adapted to the terminal's capabilities.

[0059] Based on the message from the second system, a random access is initiated to the second cell.

[0060] The present invention also provides a network-side device, including a memory, a processor, and a program stored in the memory and executable on the processor; when the processor executes the program, it implements the information transmission method as described above.

[0061] The present invention also provides a terminal, including a memory, a processor, and a program stored in the memory and executable on the processor; when the processor executes the program, it implements the network access method as described above.

[0062] The present invention also provides a computer-readable storage medium having a computer program stored thereon, characterized in that, when the program is executed by a processor, it implements the steps in the information transmission method described above, or implements the steps in the network access method described above.

[0063] The above-described technical solution of the present invention has at least the following beneficial effects:

[0064] In this embodiment of the invention, after receiving a measurement report from the second cell sent by the terminal, the first cell serving the terminal sends a handover request message to the second cell; it receives an acknowledgment message sent by the second cell based on the handover request message; then, if the acknowledgment message includes the first system message of the second cell, the second system message of the second cell is obtained according to the terminal capability information of the terminal and the first system message. The second system message is compatible with the terminal's terminal capabilities, and the first system message is the system message of the second cell; finally, when sending a cell handover indication message to the terminal, the second system message is sent. In this way, the terminal can access the second cell based on the second system message of the second cell that is compatible with the terminal's capabilities, solving the problem that the terminal cannot access the target cell when the network side parameters corresponding to the target cell are not compatible with the terminal's capabilities. Attached Figure Description

[0065] Figure 1 This is a schematic flowchart illustrating one of the information transmission methods provided in an embodiment of the present invention;

[0066] Figure 2 A schematic diagram of a method flow illustrating an example of a method applied to an embodiment of the present invention;

[0067] Figure 3 A schematic diagram of the method flow of Example 2, which illustrates the method applied to an embodiment of the present invention;

[0068] Figure 4 This is a second flowchart illustrating the information transmission method provided in an embodiment of the present invention.

[0069] Figure 5 A schematic diagram of the method flow for Example 3, which illustrates the method applied to an embodiment of the present invention;

[0070] Figure 6 A flowchart illustrating the network access method provided in an embodiment of the present invention;

[0071] Figure 7 This is a schematic diagram of the structure of an information transmission device provided in an embodiment of the present invention;

[0072] Figure 8 This is the second schematic diagram of the structure of the information transmission device provided in the embodiment of the present invention;

[0073] Figure 9 This is a schematic diagram of the structure of the network access device provided in an embodiment of the present invention;

[0074] Figure 10 This is a schematic diagram of the hardware structure of the first network-side device provided in an embodiment of the present invention;

[0075] Figure 11 This diagram illustrates the hardware structure of the second network-side device provided in an embodiment of the present invention.

[0076] Figure 12 This is a schematic diagram illustrating the hardware structure of the terminal provided in an embodiment of the present invention. Detailed Implementation

[0077] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0078] This invention addresses the problem in the prior art that a terminal cannot access the target cell when the network-side carrier bandwidth corresponding to the target cell is greater than the terminal-side carrier bandwidth, and provides an information transmission method, network access method, apparatus, and device.

[0079] like Figure 1 The diagram shown is a flowchart illustrating an information transmission method provided in an embodiment of the present invention. This method is applied to a first network-side device, which is the network-side device belonging to a first cell serving a terminal. The method includes:

[0080] Step 101: After obtaining the measurement report of the second cell sent by the terminal, send a handover request message to the second cell.

[0081] Optionally, the measurement report for the second cell is a measurement report on the signal strength or quality of the second cell.

[0082] It should be understood that after obtaining the measurement report of the second cell sent by the terminal, a handover request message is sent to the second cell, indicating that the measurement report of the second cell shows that the second cell is the target cell that meets the handover conditions.

[0083] Here, sending a handover request message to the second cell is to request handover resources from the second cell (i.e., the target cell).

[0084] Step 102: Receive the confirmation message sent by the second cell based on the handover request message.

[0085] It should be noted that the confirmation message is used to indicate that the resource switching preparation is complete.

[0086] Step 103: If the confirmation message includes the first system message of the second cell, obtain the second system message of the second cell based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell.

[0087] It should be noted that before a terminal can access the second cell, it must first obtain the system information of the second cell to know how the second cell is configured, so that it can access the second cell and work correctly within the second cell.

[0088] It should be understood that the first system message includes a set of parameters related to multiple preset functions on the network side where the second cell is located.

[0089] Optionally, the terminal's capability information can be obtained locally or reported by the terminal.

[0090] Here, the terminal's capability information includes both the basic capabilities supported by the terminal and the enhanced capabilities supported by the terminal. The basic capabilities supported by the terminal include carrier bandwidth capability and access capability level information, etc. The enhanced capabilities supported by the terminal include slicing capability and multi-carrier capability, etc.

[0091] It should be noted that some parameters in the first system message may not be compatible with the corresponding parameters in the terminal capability information. In order to avoid the problem that the terminal cannot access the second cell due to the incompatibility between the parameters in the first system message of the second cell and the terminal capability, in this step, the second system message of the second cell is obtained based on the terminal capability information and the first system message. The specific implementation is detailed in the following section. The second system message is the system message of the second cell that is compatible with the terminal capability. This can solve the above problem and ensure the normal communication of the terminal.

[0092] In step 104, when sending a cell handover instruction message to the terminal, a second system message is sent.

[0093] Here, the second system message indicates the random access resources used by the terminal for cell handover. By sending the second system message of the second cell that is compatible with the terminal's capabilities to the terminal, the terminal can initiate random access to the second cell based on the second system message, thereby accessing the second cell and ensuring the normal communication of the terminal.

[0094] Optionally, the cell handover indication message is a cell reconfiguration message.

[0095] In one possible implementation, step 103 of the above method, obtaining the second system message of the second cell based on the terminal capability information of the terminal and the first system message, includes:

[0096] Step 1031: Based on the terminal capability information, update the parameters in the first system message that are not compatible with the terminal capability to parameters that are compatible with the terminal capability, and obtain the second system message.

[0097] In this embodiment, the first system message of the second cell is partially reused, that is, only the parameters in the first system message that are not compatible with the terminal capabilities are updated to the parameters that are compatible with the terminal capabilities, while other parameters remain unchanged, and finally the second system message is obtained.

[0098] For example, if the network-side carrier bandwidth support capability in the first system message is greater than the terminal-side carrier bandwidth support capability, then the parameter corresponding to the network-side carrier bandwidth support capability in the first system message is replaced with the parameter corresponding to the terminal-side carrier bandwidth support capability, so that the obtained second system message is adapted to the terminal capability.

[0099] Alternatively, step 104 of the above method can be implemented in the following two ways:

[0100] Method 1:

[0101] A cell handover instruction message is sent to the terminal. The cell handover instruction information includes a second system message.

[0102] It should be noted that, in addition to the second system message, the cell handover indication message may also include the handover command, the random access resources of the second cell, etc.

[0103] Method 2:

[0104] When sending a cell handover instruction message to the terminal, a second system message is also sent along with it.

[0105] Optionally, if the cell handover indication message includes a first system message, when sending the cell handover indication message to the terminal, a second system message and second indication information are simultaneously sent along with it. The second indication information is used to instruct the terminal to initiate random access using the second system message. Alternatively, if the cell handover indication message includes a first system message, the second system message includes third indication information, which is used to instruct the terminal to initiate random access using the second system message.

[0106] Optionally, the second system message sent along with the handover command may use the same cell handover indication message or different cell handover indication messages.

[0107] The above all correspond to the scenario where the second system message is generated by the first cell (i.e., the source cell).

[0108] Here, corresponding to the case where the second system message is generated by the first cell, as shown in the following example (see Example 1) Figure 2 ) and Example 2 (see Figure 3 This section describes the entire handover process. It should be noted that the source cell mentioned in the example corresponds to the first cell in this embodiment of the invention, and the target cell corresponds to the second cell in this embodiment of the invention.

[0109] Example 1

[0110] S21, the terminal sends a measurement report on the signal strength of the target cell to the source cell;

[0111] S22, the source cell sends a handover request message to the target cell;

[0112] Here, the handover request message is used to request the target cell to prepare handover resources.

[0113] S23, the target cell sends an acknowledgment message to the source cell based on the handover request message. The acknowledgment message includes a Target to Source Transparent Container, in which the target cell's first system message and network configuration information are encapsulated.

[0114] Here, the target cell prepares handover resources based on the handover request message, and sends an acknowledgment message to the source cell after the handover resources are prepared.

[0115] S24, after receiving the confirmation message, the source cell disassembles the Target to Source Transparent Container, updates the first system message of the target cell to the second system message adapted to the terminal capabilities, and encapsulates the second system message and network configuration information again in the Target to Source Transparent Container.

[0116] S25, the source cell sends a reconfiguration message to the terminal. The reconfiguration message includes a re-encapsulated Target to Source Transparent Container, which contains a second system message.

[0117] S26, the terminal initiates random access to the target cell according to the random access resources indicated by the second system message.

[0118] Finally, after the terminal accesses the target cell, the target cell configures a dedicated bandwidth portion (BWP) for the terminal, which is consistent with the terminal's carrier bandwidth.

[0119] Example 2

[0120] S31, the terminal sends a measurement report on the signal strength of the target cell to the source cell;

[0121] S32, the source cell sends a handover request message to the target cell;

[0122] Here, the handover request message is used to request the target cell to prepare handover resources.

[0123] S33, the target cell sends an acknowledgment message to the source cell based on the handover request message. The acknowledgment message includes the target cell's first system message and network configuration information.

[0124] Here, the target cell prepares handover resources based on the handover request message, and sends an acknowledgment message to the source cell after the handover resources are prepared.

[0125] It should be noted that the first system message and network configuration information of the target cell can be encapsulated in the Target toSource Transparent Container.

[0126] S34, after receiving the confirmation message, the source cell updates the first system message of the target cell to the second system message adapted to the terminal capabilities, and then encapsulates the second system message;

[0127] It should be noted that after the source cell receives the confirmation message, it does not disassemble and reconstruct the encapsulated Target to SourceTransparent Container. Instead, it updates the first system message of the target cell to the second system message adapted to the terminal capabilities and then encapsulates the second system message.

[0128] S35, when the source cell sends a reconfiguration message to the terminal, it also sends an encapsulated second system message and network indication along with it.

[0129] It should be noted that the network indication is used to instruct the terminal to use the second system message sent along with the network to overwrite the system message (first system message) encapsulated on the target cell side. That is, the terminal subsequently uses the second system message sent along with the network to initiate random access to the target cell.

[0130] Optionally, the second system message issued along with the path and the switching command may use the same reconfiguration message or different reconfiguration messages.

[0131] S36, the terminal receives the reconfiguration message sent by the source cell and initiates random access to the target cell using the second system message sent along with the network, as instructed by the network.

[0132] Finally, after the terminal accesses the target cell, the target cell configures a terminal-specific BWP for the terminal, wherein the BWP configuration is consistent with the terminal carrier bandwidth.

[0133] It should be noted that the second system message of the second cell adapted to the terminal capability can be generated by the first cell or by the second cell.

[0134] In an optional implementation, the handover request message includes target information, which is used to instruct the second cell to generate a second system message. The target information includes first indication information and / or terminal capability information. Accordingly, after step 102, the method of this embodiment further includes:

[0135] When sending a cell handover instruction message to a terminal, if the confirmation message includes a second system message, the second system message is sent.

[0136] It should be noted that in this implementation, the first cell instructs the second cell to generate a second system message by sending a handover request message carrying target information to the second cell; that is, the second system message is generated by the second cell. In this implementation, the first cell is responsible for receiving an acknowledgment message containing the second system message and then forwarding the second system message to the terminal.

[0137] Optionally, when sending a cell handover indication message to the terminal, there are two ways to send the second system message, which can be referred to in the description of step 104 above, and will not be repeated here.

[0138] The above implementation addresses the problem of a terminal being unable to access the target cell when it needs to, due to its incompatibility with the capabilities supported by the target cell. It should be noted that not all terminals are incompatible with the capabilities supported by the target cell. To improve the handover efficiency of network-side equipment and save processing resources, terminals whose capabilities are incompatible with the capabilities supported by the target cell are grouped into one type of terminal (e.g., the carrier bandwidth supported by the terminal is equal to the carrier bandwidth supported by the target cell), which can be called the first terminal. This type of terminal can be recorded by the network-side equipment, for example, by the first network-side equipment belonging to the first cell. Once the network-side equipment identifies the terminal as the first terminal, it executes the method described in the above embodiment of the invention. To achieve the goal of the network-side equipment being able to identify the terminal as the first terminal, in an optional implementation, before step 101 of the above method, the method of the present invention may further include:

[0139] If the terminal's attribute information is identified as that of the first terminal, or if the frequency of the terminal reporting measurement reports for the first frequency point is greater than a preset threshold, but it cannot access the first frequency point and always stays on the second frequency point with a lower access priority than the first frequency point, then the terminal is determined to be the first terminal.

[0140] The terminal's attribute information includes the terminal model, version information, and terminal identifier.

[0141] Here, the terminal identifier can be the terminal's permanent user identifier SUPI or the hidden user identifier SUCI.

[0142] It should be noted that the first cell can obtain the terminal's attribute information through terminal reporting or by actively obtaining it from the terminal. The first network-side device to which the first cell belongs records the attribute information of the first terminal. By comparison, it can be identified whether the obtained terminal attribute information is the attribute information of the first terminal.

[0143] Another identification method is that the frequency of the terminal reporting measurement reports for the first frequency point is greater than a preset threshold. In other words, the terminal frequently reports measurement reports for the first frequency point, but cannot access the first frequency point, that is, it cannot access the second cell corresponding to the first frequency point, but always camps on the second frequency point with a lower access priority than the first frequency point, that is, always camps on the first cell corresponding to the second frequency point. For example, after the terminal accesses the network, it always camps on the 4G frequency point and frequently reports measurement reports for a specific 5G frequency point. The access priority of the specific 5G frequency point is higher than that of the 4G frequency point, but it cannot access the specific 5G frequency point. Then the terminal is identified as the first terminal.

[0144] The information transmission method of this invention involves a first cell serving a terminal sending a handover request message to the second cell after receiving a measurement report from the second cell sent by the terminal; receiving an acknowledgment message from the second cell based on the handover request message; then, if the acknowledgment message includes a first system message from the second cell, obtaining a second system message from the second cell based on the terminal's terminal capability information and the first system message, wherein the second system message is compatible with the terminal's terminal capabilities, and the first system message is the system message of the second cell; finally, when sending a cell handover indication message to the terminal, the second system message is also sent. This enables the terminal to access the second cell based on the second system message from the second cell that is compatible with the terminal's capabilities, thus solving the problem that the terminal cannot access the target cell when the network-side parameters corresponding to the target cell are incompatible with the terminal's capabilities.

[0145] like Figure 4 As shown, this embodiment of the invention also provides an information transmission method, which is applied to a second network-side device, which is the network-side device to which the second cell to be switched by the terminal belongs.

[0146] Among them, the method and Figure 1 The method executed by the first network-side device shown may include:

[0147] Step 401: Receive the handover request message sent by the first cell.

[0148] Specifically, the first cell receives the handover request message after obtaining the measurement report of the second cell sent by the terminal.

[0149] Step 402: Based on the handover request message, send an acknowledgment message to the first cell. The acknowledgment message includes the first system message of the second cell, so that the first cell can obtain the second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities. The first system message is the system message of the second cell.

[0150] Here, after the second network-side device completes the handover resource preparation based on the handover request message, it sends a confirmation message to the first cell.

[0151] The information transmission method of this invention receives a handover request message sent by a first cell; according to the handover request message, it sends an acknowledgment message to the first cell, the acknowledgment message including a first system message of a second cell, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message, the second system message being adapted to the terminal's terminal capabilities, wherein the first system message is the system message of the second cell, thereby enabling the terminal to initiate random access to the second cell based on the second system message adapted to the terminal capabilities, so as to access the second cell and ensure normal communication of the terminal.

[0152] The method performed in the above embodiments is with Figure 1 The method executed by the first network-side device shown corresponds to the situation where the second system message is generated by the first cell (i.e., the source cell).

[0153] It should be noted that the second system message of the second cell adapted to the terminal capability can be generated by the first cell or by the second cell.

[0154] In an alternative implementation, after step 401, the method of this embodiment of the invention may further include:

[0155] a1, where the handover request message includes target information, the target information is used to instruct the second cell to generate a second system message, and the target information includes first indication information and / or terminal capability information, the terminal capability information is obtained.

[0156] Optionally, the first indication information is a terminal identifier or a 1-bit indication. When the target information is terminal capability information, the terminal capability information serves as an implicit indication, instructing the second cell to generate a second system message.

[0157] It should be noted that the handover request message itself is used to request handover resources from the second cell. Therefore, based on the handover request message, the second cell prepares its first system message.

[0158] Here, if the handover request message includes terminal capability information, the second network-side device can obtain the terminal capability information; if the handover request message does not include terminal capability information, the device can actively obtain terminal capability information from the terminal or obtain terminal capability information from the local device according to the first instruction information.

[0159] a2, based on the terminal capability information and the first system message of the second cell, obtains the second system message of the second cell.

[0160] Here, the terminal's capability information includes both the basic capabilities supported by the terminal and the enhanced capabilities supported by the terminal. The basic capabilities supported by the terminal include carrier bandwidth capability and access capability level information, etc. The enhanced capabilities supported by the terminal include slicing capability and multi-carrier capability, etc.

[0161] It should be noted that some parameters in the first system message may not be compatible with the corresponding parameters in the terminal capability information. In order to avoid the problem that the terminal cannot access the second cell due to the incompatibility between the parameters in the first system message of the second cell and the terminal capability, in this step, the second system message of the second cell is obtained based on the terminal capability information and the first system message. The specific implementation is detailed in the following section. The second system message is the system message of the second cell that is compatible with the terminal capability. This can solve the above problem and ensure the normal communication of the terminal.

[0162] a3 sends an acknowledgment message to the first cell, which includes the second system message for the second cell.

[0163] Here, after sending an acknowledgment message containing the second system message of the second cell to the first cell, the first cell will transparently transmit the second system message to the terminal, so that the terminal can initiate random access to the second cell based on the second system message, thereby ensuring the normal communication of the terminal.

[0164] In one alternative implementation, method step a2 may include:

[0165] Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capability are updated to parameters that are compatible with the terminal capability, thus obtaining the second system message.

[0166] In this embodiment, the first system message of the second cell is partially reused, that is, only the parameters in the first system message that are not compatible with the terminal capabilities are updated to the parameters that are compatible with the terminal capabilities, while other parameters remain unchanged, and finally the second system message is obtained.

[0167] For example, if the network-side carrier bandwidth support capability in the first system message is greater than the terminal-side carrier bandwidth support capability, then the parameter corresponding to the network-side carrier bandwidth support capability in the first system message is replaced with the parameter corresponding to the terminal-side carrier bandwidth support capability, so that the obtained second system message is adapted to the terminal capability.

[0168] The following example, see Example 3. Figure 5 This describes the entire handover process corresponding to the generation of the second system message by the second cell. It should be noted that the source cell mentioned in the example is equivalent to the first cell in this embodiment of the invention, and the target cell is equivalent to the second cell in this embodiment of the invention.

[0169] Example 3

[0170] S51, the terminal sends a measurement report on the signal strength of the target cell to the source cell;

[0171] S52, the source cell sends a handover request message to the target cell. The handover request message includes the terminal identifier and terminal capability information.

[0172] S53, the target cell obtains the first system message and network configuration information of the target cell based on the handover request message; updates the first system message of the target cell to a second system message adapted to the terminal capabilities; and encapsulates the second system message and network configuration information in a Target to Source Transparent Container.

[0173] S54, the target cell sends an acknowledgment message to the source cell. This acknowledgment message includes "Target to Source Transparent Container," which includes a second system message and network configuration information.

[0174] S55, the source cell sends a reconfiguration message to the terminal, wherein the reconfiguration message includes a second system message and network configuration information;

[0175] S56, the terminal initiates random access to the target cell according to the random access resources indicated by the second system message.

[0176] Finally, after the terminal accesses the target cell, the target cell configures a dedicated bandwidth portion (BWP) for the terminal, which is consistent with the terminal's carrier bandwidth.

[0177] like Figure 6 As shown in the figure, this embodiment of the invention also provides a network access method, which is applied to a terminal.

[0178] The method includes:

[0179] Step 601: When receiving the cell handover indication message sent by the first cell, the second system message of the second cell is received, and the second system message is adapted to the terminal capabilities of the terminal.

[0180] Optionally, the second system message of the second cell is carried in the cell handover indication message; or, while receiving the cell handover indication message, the second system message of the second cell sent along with the first cell is received.

[0181] Optionally, the cell handover indication message is a cell reconfiguration message.

[0182] Step 602: Initiate random access to the second cell based on the second system message.

[0183] Specifically, based on the random access resources indicated by the second system message, a random access is initiated to the second cell.

[0184] It should be noted that since the second system message is a system message of the second cell that is compatible with the terminal's capabilities, this can avoid the problem that the terminal cannot access the second cell due to the parameters in the first system message of the second cell being incompatible with the terminal's capabilities, thereby ensuring the normal communication of the terminal.

[0185] In the network access method of this invention, when a terminal receives a cell handover indication message sent by a first cell, it receives a second system message from a second cell. The second system message is compatible with the terminal's capabilities, and the terminal initiates random access to the second cell based on the second system message. Since the second system message is a system message of the second cell that is compatible with the terminal's capabilities, this avoids the problem that the terminal cannot access the second cell due to the parameters in the first system message of the second cell being incompatible with the terminal's capabilities, thereby ensuring the normal communication of the terminal.

[0186] Optionally, the second system message is generated by the second cell, and the first cell transmits the second system message.

[0187] For details on the process of generating the second system message in the second cell, please refer to [link / reference]. Figure 4 The embodiments shown are not described in detail here.

[0188] Optionally, the second system message is generated by the first cell.

[0189] For details on the process of the first cell generating the second system message, please refer to [link / reference]. Figure 1 The embodiments shown are not described in detail here.

[0190] To enable the second cell to generate the second system message or the first cell to generate the second system message, in an optional implementation, before step 601, the method of this embodiment of the invention further includes:

[0191] The measurement report of the second cell is sent to the first cell. The measurement report is used to trigger the first cell to send a handover request message to the second cell.

[0192] Optionally, the handover request message includes target information, which instructs the second cell to generate a second system message. The target information includes first indication information and / or terminal capability information. This enables the second cell to generate a second system message.

[0193] Alternatively, by triggering the first cell to send a handover request message to the second cell, the first cell receives an acknowledgment message from the second cell and generates a second system message based on the terminal capability information and the first system message of the second cell in the acknowledgment message, where the first system message is the system message of the second cell. This allows the first cell to generate the second system message.

[0194] like Figure 7 As shown, this embodiment of the invention also provides an information transmission device, which includes:

[0195] The first sending module 701 is used to send a handover request message to the second cell after receiving the measurement report of the second cell sent by the terminal;

[0196] The first receiving module 702 is used to receive the confirmation message sent by the second cell based on the handover request message;

[0197] The first acquisition module 703 is used to obtain the second system message of the second cell based on the terminal capability information of the terminal and the first system message when the confirmation message includes the first system message of the second cell. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell.

[0198] The second sending module 704 is used to send a second system message when sending a cell handover indication message to the terminal.

[0199] Optionally, the first acquisition module 703 includes:

[0200] The first acquisition unit is used to update the parameters in the first system message that are not compatible with the terminal capabilities to parameters that are compatible with the terminal capabilities, based on the terminal capability information, so as to obtain the second system message.

[0201] Optionally, the handover request message includes target information, which is used to instruct the second cell to generate a second system message. The target information includes first indication information and / or terminal capability information. Accordingly, the apparatus of this embodiment further includes:

[0202] The third sending module is used to send the second system message when sending a cell handover indication message to the terminal if the confirmation message includes the second system message.

[0203] Optionally, the second transmitting module 704 includes:

[0204] The first sending unit is used to send a cell handover indication message to the terminal, the cell handover indication message including a second system message;

[0205] Alternatively, the second sending unit is used to send a second system message along with the cell handover indication message to the terminal.

[0206] Optionally, the apparatus in this embodiment of the invention further includes:

[0207] The first processing module is used to determine that the terminal is the first terminal when it is identified that the attribute information of the terminal is the attribute information of the first terminal, or when the frequency of the terminal reporting the measurement report of the first frequency point is greater than a preset threshold, but it cannot access the first frequency point and always stays in the second frequency point with a lower access priority than the first frequency point.

[0208] The information transmission device of this invention, after receiving a measurement report from a second cell sent by the terminal, sends a handover request message to the second cell via a first cell serving the terminal; receives an acknowledgment message sent by the second cell based on the handover request message; then, if the acknowledgment message includes a first system message of the second cell, obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message, wherein the second system message is compatible with the terminal's terminal capabilities, and the first system message is the system message of the second cell; finally, when sending a cell handover indication message to the terminal, the second system message is sent. In this way, the terminal can access the second cell based on the second system message of the second cell that is compatible with the terminal's capabilities, solving the problem that the terminal cannot access the target cell when the network side parameters corresponding to the target cell are incompatible with the terminal's capabilities.

[0209] like Figure 8 As shown, this embodiment of the invention also provides an information transmission device, which includes:

[0210] The second receiving module 801 is used to receive the handover request message sent by the first cell;

[0211] The fourth sending module 802 is used to send an acknowledgment message to the first cell according to the handover request message. The acknowledgment message includes the first system message of the second cell, so that the first cell can obtain the second system message of the second cell according to the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal. The first system message is the system message of the second cell.

[0212] Optionally, the apparatus in this embodiment of the invention further includes:

[0213] The second acquisition module is used to obtain terminal capability information when the handover request message includes target information, the target information is used to instruct the second cell to generate a second system message, and the target information includes first indication information and / or terminal capability information.

[0214] The third acquisition module is used to obtain the second system message of the second cell based on the terminal capability information and the first system message of the second cell.

[0215] The fifth sending module is used to send an acknowledgment message to the first cell, which includes the second system message of the second cell.

[0216] Optionally, the third acquisition module includes:

[0217] The second acquisition unit is used to update the parameters in the first system message that are not compatible with the terminal capabilities to parameters that are compatible with the terminal capabilities, based on the terminal capability information, so as to obtain the second system message.

[0218] The information transmission device of this invention receives a handover request message sent by a first cell; according to the handover request message, it sends an acknowledgment message to the first cell. The acknowledgment message includes a first system message of a second cell, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities, wherein the first system message is the system message of the second cell. This enables the terminal to initiate random access to the second cell based on the second system message adapted to its terminal capabilities, thereby ensuring normal communication of the terminal.

[0219] like Figure 9 As shown, this embodiment of the invention also provides a network access device, which includes:

[0220] The third receiving module 901 is used to receive a second system message from the second cell when receiving a cell handover indication message sent by the first cell. The second system message is adapted to the terminal capabilities of the terminal.

[0221] The network access module 902 is used to initiate random access to the second cell based on the second system message.

[0222] Optionally, the second system message is generated by the second cell, and the first cell transmits the second system message.

[0223] Optionally, the second system message is generated by the first cell.

[0224] Optionally, the apparatus in this embodiment of the invention further includes:

[0225] The sixth sending module is used to send the measurement report of the second cell to the first cell. The measurement report is used to trigger the first cell to send a handover request message to the second cell.

[0226] The network access device of this invention receives a second system message from a second cell when receiving a cell handover indication message from a first cell. The second system message is compatible with the terminal's capabilities, and random access is initiated to the second cell based on the second system message. Since the second system message is a system message of the second cell that is compatible with the terminal's capabilities, the problem of the terminal being unable to access the second cell due to incompatibility between the parameters in the first system message of the second cell and the terminal's capabilities can be avoided, thereby ensuring normal communication of the terminal.

[0227] To better achieve the above objectives, such as Figure 10 As shown, this embodiment of the invention also provides a first network-side device, which is a network-side device belonging to a first cell serving a terminal, including a processor 1000 and a transceiver 1010. The transceiver receives and transmits data under the control of the processor, and the processor is used to execute the following process:

[0228] After receiving the measurement report of the second cell sent by the terminal, the transceiver 1010 sends a handover request message to the second cell.

[0229] The transceiver 1010 receives the confirmation message sent by the second cell based on the handover request message;

[0230] If the confirmation message includes the first system message of the second cell, the second system message of the second cell is obtained based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell.

[0231] When sending a cell handover indication message to the terminal via transceiver 1010, a second system message is sent.

[0232] Optionally, the processor 1000 is also used for:

[0233] Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capability are updated to parameters that are compatible with the terminal capability, thus obtaining the second system message.

[0234] Optionally, the handover request message includes target information, which is used to instruct the second cell to generate a second system message. The target information includes first indication information and / or terminal capability information. Correspondingly, the transceiver 1010 is also used for:

[0235] If the confirmation message includes a second system message, then when sending a cell handover indication message to the terminal, the second system message is sent.

[0236] Optionally, transceiver 1010 is also used for:

[0237] Send a cell handover instruction message to the terminal. The cell handover instruction information includes a second system message.

[0238] Alternatively, when sending a cell handover instruction message to the terminal, a second system message may be sent simultaneously.

[0239] Optionally, the processor 1000 is also used for:

[0240] If the terminal's attribute information is identified as that of the first terminal, or if the frequency of the terminal reporting measurement reports for the first frequency point is greater than a preset threshold, but it cannot access the first frequency point and always resides on the second frequency point with a lower access priority than the first frequency point, then the terminal is determined to be the first terminal.

[0241] In this embodiment of the invention, the first network-side device, after receiving a measurement report from the second cell sent by the terminal through a first cell serving the terminal, sends a handover request message to the second cell; receives an acknowledgment message sent by the second cell based on the handover request message; then, if the acknowledgment message includes the first system message of the second cell, obtains the second system message of the second cell based on the terminal capability information of the terminal and the first system message, wherein the second system message is compatible with the terminal's terminal capabilities, and the first system message is the system message of the second cell; finally, when sending a cell handover indication message to the terminal, the second system message is sent. In this way, the terminal can access the second cell based on the second system message of the second cell that is compatible with the terminal's capabilities, solving the problem that the terminal cannot access the target cell when the network-side parameters corresponding to the target cell are incompatible with the terminal's capabilities.

[0242] To better achieve the above objectives, such as Figure 11 As shown, this embodiment of the invention also provides a second network-side device, which is the network-side device to which the second cell to which the terminal is to be handed over belongs. The second network-side device includes a processor 1100 and a transceiver 1110. Under the control of the processor, the transceiver receives and transmits data. The transceiver is used to perform the following process:

[0243] Receive the handover request message sent by the first cell;

[0244] According to the handover request message, an acknowledgment message is sent to the first cell. The acknowledgment message includes the first system message of the second cell, so that the first cell can obtain the second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities. The first system message is the system message of the second cell.

[0245] Optionally, the processor 1100 is also used for:

[0246] In the case where the handover request message includes target information, the target information is used to instruct the second cell to generate a second system message, and the target information includes first indication information and / or terminal capability information, the terminal capability information is obtained.

[0247] Based on the terminal capability information and the first system message of the second cell, obtain the second system message of the second cell;

[0248] The transceiver 1110 sends an acknowledgment message to the first cell, which includes the second system message of the second cell.

[0249] Optionally, the processor 1100 is also used for:

[0250] Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capability are updated to parameters that are compatible with the terminal capability, thus obtaining the second system message.

[0251] The second network-side device in this embodiment of the invention receives a handover request message sent by a first cell; according to the handover request message, it sends an acknowledgment message to the first cell. The acknowledgment message includes a first system message of the second cell, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities, wherein the first system message is the system message of the second cell. This enables the terminal to initiate random access to the second cell based on the second system message adapted to its terminal capabilities, thereby ensuring normal communication of the terminal.

[0252] To better achieve the above objectives, such as Figure 12 As shown, this embodiment of the invention also provides a terminal, including a processor 1200 and a transceiver 1210. The terminal also includes a user interface 1220, and the transceiver is used to perform the following process:

[0253] When receiving the cell handover indication message sent by the first cell, the second system message of the second cell is received, and the second system message is adapted to the terminal's terminal capabilities.

[0254] Based on the message from the second system, a random access was initiated to the second cell.

[0255] Optionally, the second system message is generated by the second cell, and the first cell transmits the second system message.

[0256] Optionally, the second system message is generated by the first cell.

[0257] Alternatively, transceiver 1210 is also used for:

[0258] The measurement report of the second cell is sent to the first cell. The measurement report is used to trigger the first cell to send a handover request message to the second cell.

[0259] In this embodiment of the invention, the terminal receives a second system message from a second cell when receiving a cell handover indication message from a first cell. The second system message is compatible with the terminal's capabilities, and the terminal initiates random access to the second cell based on the second system message. Since the second system message is a system message from the second cell that is compatible with the terminal's capabilities, this avoids the problem that the terminal cannot access the second cell due to the parameters in the first system message of the second cell being incompatible with the terminal's capabilities, thereby ensuring the normal communication of the terminal.

[0260] This invention also provides a network-side device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the various processes in the information transmission method embodiments described above and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0261] This invention also provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the various processes in the network access method embodiments described above and achieves the same technical effect. To avoid repetition, these will not be repeated here.

[0262] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, this program implements the processes described in the information transmission method embodiments above, or the processes described in the network access method embodiments above, achieving the same technical effects. To avoid repetition, further details are omitted here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0263] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0264] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 A device for one or more processes and / or the functions specified in one or more boxes.

[0265] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce a paper article including an instruction means, the instruction means being implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0266] These computer program instructions can also be loaded onto a computer or other programmable data processing equipment, causing the computer or other programmable equipment to perform a series of operational steps to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0267] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An information transmission method, applied to a first network-side device, wherein the first network-side device is a network-side device belonging to a first cell serving a terminal, characterized in that, include: After receiving the measurement report of the second cell sent by the terminal, a handover request message is sent to the second cell; Receive the confirmation message sent by the second cell based on the handover request message; When the confirmation message includes a first system message, a second system message of the second cell is obtained based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell. When sending a cell handover instruction message to the terminal, the second system message is sent.

2. The method according to claim 1, characterized in that, Obtaining the second system message of the second cell based on the terminal capability information of the terminal and the first system message includes: Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capabilities are updated to parameters that are compatible with the terminal capabilities, thereby obtaining the second system message.

3. The method according to claim 1, characterized in that, The handover request message includes target information, which is used to instruct the second cell to generate the second system message. The target information includes first indication information and / or the terminal capability information. After receiving the confirmation message sent by the second cell based on the handover request message, the method further includes: When the confirmation message includes the second system message, the second system message is sent when sending a cell handover indication message to the terminal.

4. The method according to claim 1 or 3, characterized in that, When sending a cell handover indication message to the terminal, the second system message is sent, including: Send a cell handover indication message to the terminal, wherein the cell handover indication information includes the second system message; Alternatively, when sending a cell handover instruction message to the terminal, the second system message may be sent simultaneously.

5. The method according to claim 1, characterized in that, Before sending a handover request message to the second cell after receiving the measurement report from the terminal, the method further includes: If the attribute information of the terminal is identified as that of the first terminal, or if the frequency of the terminal reporting measurement reports for the first frequency point is greater than a preset threshold, but it cannot access the first frequency point and always stays on the second frequency point with a lower access priority than the first frequency point, then the terminal is determined to be the first terminal.

6. An information transmission method, applied to a second network-side device, wherein the second network-side device is the network-side device to which the second cell to which the terminal is to be handed over belongs, characterized in that, include: Receive the handover request message sent by the first cell; According to the handover request message, a confirmation message is sent to the first cell. The confirmation message includes a first system message, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities, wherein the first system message is the system message of the second cell.

7. The method according to claim 6, characterized in that, After receiving the handover request message sent by the first cell, the method further includes: When the handover request message includes target information, the target information is used to instruct the second cell to generate the second system message, and the target information includes first indication information and / or the terminal capability information, the terminal capability information is obtained. Based on the terminal capability information and the first system message of the second cell, the second system message of the second cell is obtained; A confirmation message is sent to the first cell, the confirmation message including the second system message of the second cell.

8. The method according to claim 7, characterized in that, The step of obtaining the second system message of the second cell based on the terminal capability information and the first system message of the second cell includes: Based on the terminal capability information, the parameters in the first system message that are not compatible with the terminal capabilities are updated to parameters that are compatible with the terminal capabilities, thereby obtaining the second system message.

9. A network access method, applied to a terminal, characterized in that, include: When receiving a cell handover indication message from the first cell, the terminal receives a second system message from the second cell, which is adapted to the terminal's capabilities. Based on the message from the second system, a random access is initiated to the second cell.

10. The method according to claim 9, characterized in that, The second system message is generated by the second cell, and the first cell transmits the second system message.

11. The method according to claim 9, characterized in that, The second system message is generated by the first cell.

12. The method according to claim 9, characterized in that, Before receiving the second system message from the second cell after receiving the cell handover indication message from the first cell, the method further includes: The measurement report of the second cell is sent to the first cell, and the measurement report is used to trigger the first cell to send a handover request message to the second cell.

13. An information transmission device, characterized in that, include The first sending module is used to send a handover request message to the second cell after receiving the measurement report of the second cell sent by the terminal; The first receiving module is used to receive the confirmation message sent by the second cell based on the handover request message; The first acquisition module is configured to, when the confirmation message includes the first system message of the second cell, obtain the second system message of the second cell based on the terminal capability information of the terminal and the first system message, wherein the second system message is adapted to the terminal capability of the terminal and the first system message is the system message of the second cell; The second sending module is used to send the second system message when sending a cell handover indication message to the terminal.

14. An information transmission device, characterized in that, include: The second receiving module is used to receive the handover request message sent by the first cell; The fourth sending module is configured to send an acknowledgment message to the first cell according to the handover request message. The acknowledgment message includes a first system message of the second cell, so that the first cell obtains a second system message of the second cell based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, wherein the first system message is a system message of the second cell.

15. A network access device, characterized in that, include: The third receiving module is used to receive a second system message from the second cell when receiving a cell handover indication message sent by the first cell. The second system message is adapted to the terminal capabilities of the terminal. The network access module is used to initiate random access to the second cell based on the second system message.

16. A first network-side device, wherein the first network-side device is a network-side device belonging to a first cell serving a terminal, comprising a processor and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, characterized in that, The processor is used to perform the following operations: After receiving the measurement report of the second cell sent by the terminal, a handover request message is sent to the second cell; Receive the confirmation message sent by the second cell based on the handover request message; When the confirmation message includes the first system message of the second cell, the second system message of the second cell is obtained based on the terminal capability information of the terminal and the first system message. The second system message is adapted to the terminal capability of the terminal, and the first system message is the system message of the second cell. When sending a cell handover instruction message to the terminal, the second system message is sent.

17. A second network-side device, wherein the second network-side device is the network-side device to which the second cell to which the terminal is to be handed over belongs, comprising a processor and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, characterized in that, The transceiver is used to perform the following operations: Receive the handover request message sent by the first cell; According to the handover request message, a confirmation message is sent to the first cell. The confirmation message includes a first system message of the second cell, so that the first cell obtains a second system message of the second cell based on the terminal's terminal capability information and the first system message. The second system message is adapted to the terminal's terminal capabilities, wherein the first system message is a system message of the second cell.

18. A terminal comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, characterized in that, The transceiver is used to perform the following operations: When receiving a cell handover indication message from the first cell, the terminal receives a second system message from the second cell, which is adapted to the terminal's capabilities. Based on the message from the second system, a random access is initiated to the second cell.

19. A network-side device, comprising a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that, When the processor executes the program, it implements the information transmission method as described in any one of claims 1 to 5, or the information transmission method as described in any one of claims 6 to 8.

20. A terminal, comprising a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that, When the processor executes the program, it implements the network access method as described in any one of claims 9 to 12.

21. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the information transmission method as described in any one of claims 1 to 5, or the steps of the information transmission method as described in any one of claims 6 to 8, or the steps of the network access method as described in any one of claims 9 to 12.

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