Communication method and device, storage medium, communication equipment and chip

Abstract

Disclosed are a communication method and apparatus, a communication device and a chip, relating to the technical field of communication processing, the method comprising: firstly, receiving an RRC reconfiguration message sent by a network device, the RRC reconfiguration message comprising a conditional reconfiguration message; storing the target cell subjected to condition switching in the condition reconfiguration message; and then, in the cell selection process of the connection reestablishment process, determining a target cell for terminal connection reestablishment according to the target cell switched according to the stored condition. According to the method and the device, the probability of selecting the conditional switching target cell in the cell selection process is improved, the probability of converting a reconstruction process into a conditional switching process is further improved, signaling interaction is less and time delay is low in the connection reconstruction process, so that the connection reconstruction efficiency of the terminal is improved, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, apparatus, storage medium, communication device, and chip. Background Art

[0002] When the radio resource control (RRC) connection of a terminal is abnormal, the connection can be restored through a connection reestablishment process to ensure the continuous operation of services.

[0003] Currently, during the connection reestablishment process, interaction is required between the terminal and the network device, resulting in a long delay and affecting the connection reestablishment efficiency. Summary of the Invention

[0004] In view of this, this application provides a communication method, apparatus, storage medium, communication device, and chip, mainly aiming to improve the technical problems of long interaction delay between the terminal and the network device and low connection reestablishment efficiency during the current terminal connection reestablishment process.

[0005] In a first aspect, this application provides a communication method, including:

[0006] Receiving an RRC reconfiguration message sent by a network device, where the RRC reconfiguration message includes a conditional reconfiguration message;

[0007] Saving the target cell for conditional handover in the conditional reconfiguration message;

[0008] During the cell selection process of the connection reestablishment process, determining the target cell for terminal connection reestablishment according to the saved target cell for conditional handover.

[0009] Optionally, the determining the target cell for terminal connection reestablishment according to the saved target cell for conditional handover includes:

[0010] Selecting, from the saved target cells for conditional handover, a cell whose cell measurement result meets a preset residence condition as the target cell for terminal connection reestablishment.

[0011] Optionally, the selecting, from the saved target cells for conditional handover, a cell whose cell measurement result meets a preset residence condition as the target cell for terminal connection reestablishment includes:

[0012] Selecting, from the saved target cells for conditional handover, a cell whose reference signal received power (RSRP) is greater than a first preset threshold and / or whose reference signal received quality (RSRQ) is greater than a second preset threshold as the target cell for terminal connection reestablishment.

[0013] Optionally, after selecting, as the target cell for the terminal connection reconstruction, a cell whose cell measurement result meets a preset residence condition in a target cell switched from the saved condition, the method further includes:

[0014] Triggering the terminal to execute a conditional handover process, so that the terminal switches to the target cell.

[0015] Optionally, saving the target cell for conditional handover in the conditional reconfiguration message includes:

[0016] Saving the configuration of the target cell for conditional handover in the conditional reconfiguration message to a conditional reconfiguration variable;

[0017] Determining, according to the saved target cell for conditional handover, the target cell for terminal connection reconstruction includes:

[0018] Determining the target cell for terminal connection reconstruction according to the target cell for conditional handover saved in the conditional reconfiguration variable.

[0019] Optionally, the attempt conditional reconfiguration in the conditional reconfiguration message is in an enabled state.

[0020] In a second aspect, the present application provides a communication device, including:

[0021] A receiving module, configured to receive an RRC reconfiguration message sent by a network device, where the RRC reconfiguration message includes a conditional reconfiguration message;

[0022] A saving module, configured to save the target cell for conditional handover in the conditional reconfiguration message;

[0023] A determining module, configured to determine, during the cell selection process of the connection reconstruction process, the target cell for terminal connection reconstruction according to the saved target cell for conditional handover.

[0024] In a third aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the communication method described in the first aspect is implemented.

[0025] In a fourth aspect, the present application provides a communication device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, and when the processor executes the computer program, the communication method described in the first aspect is implemented.

[0026] Fifth aspect, the present application provides a chip, including at least one processor and a communication interface; the communication interface is used to receive signals input to the chip or signals output from the chip, and the processor communicates with the communication interface and implements the communication method described in the first aspect through logic circuits or by executing code instructions.

[0027] By means of the above technical solution, a communication method, device, storage medium, communication equipment and chip provided by the present application specifically first receives an RRC reconfiguration message sent by a network device, and the RRC reconfiguration message includes a conditional reconfiguration message; then saves the target cell for conditional handover in the conditional reconfiguration message; and then, during the cell selection process of the connection reconstruction process, determines the target cell for terminal connection reconstruction according to the saved target cell for conditional handover. Compared with the current existing technologies, the present application can configure a reconfiguration message including conditional handover for the terminal by the network device, and during the connection reconstruction process, combine the reconstruction with the conditional handover according to the protocol requirements to select the target cell for terminal connection reconstruction. The probability of selecting the target cell for conditional handover during the cell selection process is increased, and further the probability of converting the reconstruction process into a conditional handover process is increased. There is less signaling interaction and lower latency during the connection reconstruction process, thereby improving the connection reconstruction efficiency of the terminal, that is, improving the efficiency of restoring the link and enhancing the user experience.

[0028] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically enumerates the specific implementation manners of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present application and used together with the description to explain the principles of the present application.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0031] Figure 1 It shows a schematic flowchart of a communication method provided by an embodiment of the present application;

[0032] Figure 2 It shows a schematic flowchart of a communication method provided by an embodiment of the present application;

[0033] Figure 3The figure shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0034] Figure 4 The figure shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0035] Figure 5 The figure shows a schematic structural diagram of a chip provided by an embodiment of the present application. Detailed implementation manners

[0036] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0037] In order to improve the technical problems of long delay in the interaction between the terminal and the network device and low connection reconstruction efficiency during the current terminal connection reconstruction process. This embodiment provides a communication method, as Figure 1 shown, the method includes:

[0038] Step 101, receive an RRC reconfiguration message sent by a network device, where the RRC reconfiguration message includes a conditional reconfiguration message.

[0039] For the execution subject of this embodiment, it may be a communication device or a communication device, and may be configured on the terminal device side, such as an electronic device or a chip, etc.

[0040] In some examples, the method shown in this embodiment can be executed by a terminal device, which can be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can also be an automobile with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, or it can also be a chip or a chip system, etc. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the terminal device.

[0041] In some embodiments, the network device can be devices such as a base station, a satellite, etc., and no specific limitation is made in the embodiments of the present application. The network device can be an entity on the network side for transmitting or receiving signals. For example, the network can be a communication satellite, an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system, etc. The embodiments of the present disclosure do not limit the specific technologies and specific device forms adopted by the network device.

[0042] The network device provided by the embodiments of the present disclosure can be composed of a central unit (CU) and a distributed unit (DU). Among them, the CU can also be called a control unit. Adopting the CU-DU structure can split the protocol layer of the network device, such as a base station. The functions of some protocol layers are centrally controlled by the CU, and the functions of the remaining part or all protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0043] When the terminal is in the Radio Resource Control (RRC) connected state of the Fifth-generation (5G) mobile communication technology, due to abnormal underlying links or the maximum number of retransmissions being reached and other anomalies, the 5G RRC connection becomes abnormal. The 5G RRC will restore the connection through a reconstruction process to ensure the continuous operation of services. The RRC reconfiguration message can be a 5G air interface message and can be used for the content of the 5G network RRC connected state.

[0044] The conditional reconfiguration message in the RRC reconfiguration message is an information element in the air interface message and is embedded in a reconfiguration message for conditional reconfiguration. For example, in the 5G system, the terminal can be based on the "pre-configured conditions" of the network and the "candidate configuration" corresponding to the conditions. Among them, one candidate configuration can include one or more cells. When the terminal meets the "pre-configured conditions" (such as specific measurement events, etc.), the terminal changes the serving cell to the cell included in the "candidate configuration". Among them, this "mobility process triggered by conditions" can include: Conditional Handover (CHO). In this embodiment, the conditional reconfiguration message can include the target cells of these conditional handovers.

[0045] Step 102: Save the target cells of the conditional handover in the conditional reconfiguration message.

[0046] In some examples, the conditional handover is an enhancement for 5G mobility technology. The network device sends the handover conditions and the reconfiguration message carrying the handover target cell configuration to the terminal in advance. When the conditions for the conditional handover are met, the conditional handover is triggered.

[0047] Compared with ordinary handovers, the conditional handover can prevent the terminal from not receiving the handover message due to a rapid deterioration of the channel when there are anomalies such as abnormal underlying links or the maximum number of retransmissions being reached, and the network cannot trigger the handover, resulting in an interruption of the underlying link. The conditional handover can also reduce the message interaction between the terminal and the network device during the handover process, with a smaller delay and a faster handover speed.

[0048] Step 103: In the cell selection process of the connection reconstruction process, determine the target cell for the terminal connection reconstruction according to the saved target cells of the conditional handover.

[0049] It should be noted that the reestablishment process is optimized in Technical Specification (TS) 38.331 of the 3rd Generation Partnership Project (3GPP) protocol, and the reestablishment is combined with conditional handover. Specifically, in the terminal reestablishment process, if the cell selected during the cell selection process is the target cell of conditional handover, the conditional handover process can be directly triggered to restore the link without performing the process of interacting with the network for reestablishment.

[0050] Furthermore, in the 3GPP TS 38.331 protocol, abnormal underlying links or reaching the maximum number of retransmissions and other abnormalities cause the RRC connection to be abnormally triggered, leading to terminal connection reestablishment. If the network configures conditional handover for the terminal, the conditional reconfiguration message is configured in the conditional handover, and the cell selected by the terminal during the cell selection process of reestablishment is exactly one of the target cells of conditional handover, then the stored conditional reconfiguration is applied to the selected cell, and the handover process is executed.

[0051] For some examples, during the cell selection process of the reestablishment process, regular cell selection is performed, which is a selection logic based on signal strength. Only when the selected cell is exactly one of the target cells of conditional handover can the reestablishment be combined with conditional handover to take advantage of conditional handover. And based on cell selection by signal strength, the probability of selecting a target cell for conditional handover is relatively low (if the signal strength of the target cell for conditional handover is lower than that of other neighboring cells, other neighboring cells will be selected). For the case where the target cell for conditional handover is not selected, only the ordinary reestablishment process can be executed, with a large amount of signaling interaction, high latency, low efficiency in restoring the link, and reduced user experience.

[0052] Compared with the above examples, in this embodiment, the network device can configure a reconfiguration message including conditional handover for the terminal. During the connection reestablishment process, according to the protocol requirements, the reestablishment is combined with conditional handover to select the target cell for the terminal connection reestablishment. This increases the probability of selecting a target cell for conditional handover during the cell selection process, thereby increasing the probability of converting the reestablishment process into a conditional handover process. There is less signaling interaction and lower latency during the connection reestablishment process, and thus the efficiency of restoring the link is improved, enhancing the user experience.

[0053] Furthermore, to illustrate the specific implementation process of the method in this embodiment, this embodiment provides the following Figure 2 specific method, which includes:

[0054] Step 201: Receive the RRC reconfiguration message sent by the network device, and the RRC reconfiguration message includes a conditional reconfiguration message.

[0055] Exemplarily, when the terminal is in the connected state, it receives one or more radio resource control reconfiguration messages (which can be abbreviated as RRC reconfiguration messages, such as RRCReconfiguration messages) sent by the network device, for the connected state content of 5G network RRC. The RRC reconfiguration message includes a conditional reconfiguration message. For example, the conditionalReconfiguration can be embedded in an RRC reconfiguration message for conditional reconfiguration.

[0056] Optionally, step 201 may specifically include: the attempt condition reconfiguration in the conditional reconfiguration message is set to the enabled state.

[0057] Exemplarily, the attempt condition reconfiguration (attemptCondReconfig-r16) in the conditionalReconfiguration message is set to TRUE, that is, set to the enabled state. The attempt condition reconfiguration is used to indicate the following behavior: If the cell selected by the terminal during the cell selection process of connection reconstruction is exactly one of the target cells of conditional handover, then the stored conditional radio resource control reconfiguration (condRadio ResourceControlReconfiguration, condRRCReconfig) is applied to the selected cell, and the handover process is executed.

[0058] Step 202: Save the target cells of conditional handover in the conditional reconfiguration message.

[0059] Optionally, step 202 may specifically include: saving the configuration of the target cells of conditional handover in the conditional reconfiguration message to a conditional reconfiguration variable.

[0060] Exemplarily, the terminal saves the target cells of conditional handover in the conditionalReconfiguration message to a conditional reconfiguration variable (VarConditionalReconfig). The conditional reconfiguration variable is a local variable used to store the conditional reconfiguration message locally in the terminal.

[0061] Step 203: During the cell selection process of the connection reconstruction procedure, select a cell whose cell measurement result meets the preset residence condition from the saved target cells of conditional handover as the target cell for the terminal connection reconstruction.

[0062] Optionally, step 203 may specifically include: selecting, from the target cells of the saved conditional handover, a cell with a Reference Signal Received Power (RSRP) greater than a first preset threshold and / or a Reference Signal Received Quality (RSRQ) greater than a second preset threshold as the target cell for the terminal connection reconstruction.

[0063] In the embodiments of the present disclosure, for a terminal configured with conditional handover, when a connection reconstruction is triggered, if there is a target cell of conditional handover in the neighboring cells and the conditions that the RSRP is greater than the first preset threshold and / or the RSRQ is greater than the second preset threshold are met, it is determined that the target cell of conditional handover is selected. The above handover selection process combines the reconstruction with the conditional handover, gives play to the advantages of the conditional handover, and improves the probability of selecting the target cell of conditional handover in the cell selection process of the reconstruction process.

[0064] Optionally, based on the configuration of the target cell of the conditional handover in the conditional reconfiguration message in step 202 being saved to the conditional reconfiguration variable, step 203 may specifically include: determining the target cell for the terminal connection reconstruction according to the target cell of the conditional handover saved in the conditional reconfiguration variable.

[0065] Exemplarily, condRRCReconfig in the conditional reconfiguration variable is also a reconfiguration message, which includes a reconfigurationWithSync message, and the reconfigurationWithSync message can be used to indicate information about the target cell of the conditional handover during the handover process. The conditional reconfiguration variable may include one or more target cells of the conditional handover.

[0066] Step 204, trigger the terminal to execute the conditional handover process so that the terminal switches to the target cell.

[0067] Exemplarily, when the terminal is in the 5G RRC connected state, due to abnormal underlying links or the maximum number of retransmissions being reached and other abnormalities, the RRC connection becomes abnormal and a reconstruction process is initiated. During the cell selection process of the reconstruction process, the terminal preferentially selects the target cell of the conditional handover stored in the conditional reconfiguration variable, and ensures that the measurement result of the cell meets the residence conditions of a cell with an RSRP greater than the first preset threshold and / or an RSRQ greater than the second preset threshold. The terminal selects a cell that meets the above conditions during the cell selection process. And according to the protocol standard, execute the conditional handover so that the terminal switches to the target cell.

[0068] Furthermore, reconstruction is combined with conditional switching to give full play to the advantages of conditional switching, reduce the probability of terminal reconstruction, and prevent adverse effects such as excessive signaling interactions, high latency, low recovery link efficiency, and poor user experience caused by reconstruction.

[0069] In order to illustrate the specific implementation process of this embodiment, the following specific application examples are given, but are not limited thereto:

[0070] In the 5G New Radio (NR) network architecture, when the network device configures conditional switching for the terminal and the conditional reconfiguration protocol is configured in the conditional switching, the terminal needs to initiate a reconstruction process due to reasons such as wireless link failure or the maximum number of retransmissions.

[0071] The terminal resides in cell 1 (cell 1) and is in a connected state. It receives an RRC reconfiguration message sent by the network, and the RRC reconfiguration message includes a conditionalReconfiguration message; attemptCondReconfig-r16 in the conditionalReconfiguration message is set to TRUE. The conditionalReconfiguration message contains a conditional switching addition or modification table (condReconfigToAddModList). Among them, the conditional switching addition or modification table can be used to store multiple reconfiguration messages of conditional reconfiguration and their execution conditions, carrying the conditional switching target cell cell2 (and not carrying cell3, cell4, cell5).

[0072] Configure multiple neighboring cells cell2, cell3, cell4, and cell5. The signal strengths of cell3, cell4, and cell5 are all higher than cell2, and none of them is the target cell for conditional switching. The signal strength of cell2 meets the resident condition of the cell whose reference RSRP is greater than the first preset threshold and / or RSRQ is greater than the second preset threshold.

[0073] When the terminal fails to connect to the wireless link on cell1, the reestablishment process is triggered. In the reestablishment process, the cell selection process selects cell2 with a weaker signal and triggers the conditional handover process, and no reestablishment occurs on cell3, cell4 or cell5.

[0074] Compared with the current existing technologies, in this embodiment, a reconfiguration message including conditional handover can be configured for a terminal by a network device. During the connection reestablishment process, according to the protocol requirements, the reestablishment is combined with conditional handover to select the target cell for the terminal connection reestablishment. This increases the probability of selecting the target cell for conditional handover during the cell selection process, thereby increasing the probability of converting the reestablishment process into a conditional handover process. There is less signaling interaction and lower latency during the connection reestablishment process, which further improves the efficiency of restoring the link and enhances the user experience.

[0075] Further, as Figure 1 and Figure 2 a specific implementation of the method shown, this embodiment provides a communication device, as Figure 3 shown. The device includes: a receiving module 31, a saving module 32, and a determining module 33.

[0076] The receiving module 31 is configured to receive an RRC reconfiguration message sent by a network device, and the RRC reconfiguration message includes a conditional reconfiguration message;

[0077] The saving module 32 is configured to save the target cell for conditional handover in the conditional reconfiguration message;

[0078] The determining module 33 is configured to determine the target cell for the terminal connection reestablishment according to the saved target cell for conditional handover during the cell selection process of the connection reestablishment process.

[0079] In some examples of this embodiment, the determining module 33 is further configured to select, from the saved target cells for conditional handover, a cell whose cell measurement result meets a preset residence condition as the target cell for the terminal connection reestablishment.

[0080] In some examples of this embodiment, the determining module 33 is further configured to select, from the saved target cells for conditional handover, a cell whose RSRP is greater than a first preset threshold and / or whose RSRQ is greater than a second preset threshold as the target cell for the terminal connection reestablishment.

[0081] In some examples of this embodiment, the determining module 33 is further configured to trigger the terminal to execute a conditional handover process so that the terminal switches to the target cell.

[0082] In some examples of this embodiment, the saving module 32 is further configured to save the configuration of the target cell for conditional handover in the conditional reconfiguration message to a conditional reconfiguration variable; correspondingly, the determining module 33 is further configured to determine the target cell for the terminal connection reestablishment according to the target cell for conditional handover saved in the conditional reconfiguration variable.

[0083] In some examples of this embodiment, the receiving module 31 is further configured to reconfigure the attempt condition in the conditional reconfiguration message to the enabled state.

[0084] It should be noted that for other corresponding descriptions of the various functional units involved in a communication device provided in this embodiment, reference may be made to Figure 1 and Figure 2 the corresponding descriptions therein, which will not be elaborated herein.

[0085] Figure 4 FIG. 1800 is a schematic structural diagram of a communication device 1800 provided in this embodiment. The communication device 1800 may be a network device, a user equipment, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the user equipment to implement the above method. The device can be used to implement the method described in the above method embodiment, and specifically, reference may be made to the description in the above method embodiment.

[0086] The communication device 1800 may include one or more processors 1801. The processor 1801 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

[0087] Optionally, the communication device 1800 may further include one or more memories 1802, on which a computer program 1804 may be stored. The processor 1801 executes the computer program 1804 to enable the communication device 1800 to execute the method described in the above method embodiment. Optionally, data may also be stored in the memory 1802. The communication device 1800 and the memory 1802 may be provided separately or integrated together.

[0088] Optionally, the communication device 1800 may further include a transceiver 1805 and an antenna 1806. The transceiver 1805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement the transceiver function. The transceiver 1805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to implement the transmitting function.

[0089] Optionally, the communication device 1800 may further include one or more interface circuits 1807. The interface circuit 1807 is used to receive code instructions and transmit them to the processor 1801. The processor 1801 runs the code instructions to enable the communication device 1800 to execute the method described in the above method embodiment.

[0090] In one implementation, the processor 1801 may include a transceiver for implementing the receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0091] In one implementation, the processor 1801 may store a computer program 1803, which runs on the processor 1801 and enables the communication device 1800 to perform the method described in the above method embodiment. The computer program 1803 may be fixed in the processor 1801, in which case the processor 1801 may be implemented by hardware.

[0092] In one implementation, the communication device 1800 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver may also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channelmetal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0093] The communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 4 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0094] (1) An independent integrated circuit IC, or chip, or chip system or subsystem;

[0095] (2) A set having one or more ICs, optionally, the IC set may also include storage components for storing data and computer programs;

[0096] (3) ASIC, such as a modem;

[0097] (4) A module that can be embedded in other devices;

[0098] (5) A receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and so on;

[0099] (6) Others and so on.

[0100] Based on the above embodiments, this embodiment also provides a chip, including one or more interfaces and one or more processors; the interfaces are used to receive signals from the memory of a communication device and send the signals to the processors, and the signals include computer instructions stored in the memory; when the processors execute the computer instructions, the communication device is caused to execute the methods as described above Figure 1 and Figure 2 shown.

[0101] Figure 5 is a schematic structural diagram of a chip 1000 for implementing the above communication method provided by this embodiment. Referring to Figure 5 , the chip 1000 includes at least one communication interface 1001 and a processor 1002. The communication interface 1001 is used to receive signals input to the chip 1000 or signals output from the above chip 1000, and the processor 1002 communicates with the communication interface 1001 and implements the communication method described in the above embodiments of the present disclosure through logic circuits or by executing code instructions.

[0102] Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such a function is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art can use various methods to implement the described function for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present disclosure.

[0103] The present disclosure also provides a computer-readable storage medium, on which instructions are stored, and when the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

[0104] The present disclosure also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.

[0105] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions according to the embodiments of the present disclosure are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer program can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a high-definition digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0106] Those of ordinary skill in the art can understand that the various numerical numbers such as the first, second, etc. involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, nor do they represent the order of precedence.

[0107] At least one in the present disclosure can also be described as one or more. The plurality can be two, three, four, or more, and the present disclosure does not make any limitations. In the embodiments of the present disclosure, for a technical feature, the technical features in this technical feature are distinguished by "first", "second", "third", "A", "B", "C", and "D", etc. There is no order of precedence or size order among the technical features described by the "first", "second", "third", "A", "B", "C", and "D".

[0108] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and / or device (e.g., a magnetic disk, an optical disk, a memory, a programmable logic device (PLD)) that provides machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal that provides machine instructions and / or data to a programmable processor.

[0109] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0110] A computer system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

[0111] It should be understood that the various forms of the flow shown above can be used, steps can be reordered, added, or deleted. For example, the steps recited in this disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of this disclosure application can be achieved. There is no limitation herein.

[0112] In addition, it should be understood that the various embodiments described in this disclosure can be implemented separately or, where the solution permits, in combination with other embodiments.

[0113] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this disclosure.

[0114] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0115] As described above, the above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present disclosure, and all should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that, including: receiving a Radio Resource Control (RRC) reconfiguration message sent by a network device, where the RRC reconfiguration message includes a conditional reconfiguration message; saving a target cell for conditional handover in the conditional reconfiguration message; during the cell selection process of a connection reestablishment procedure, determining a target cell for terminal connection reestablishment according to the saved target cell for conditional handover.

2. The method according to claim 1, characterized in that, The determining, according to the saved target cell for conditional handover, a target cell for terminal connection reestablishment includes: selecting, from the saved target cells for conditional handover, a cell whose cell measurement result meets a preset residence condition as the target cell for terminal connection reestablishment.

3. The method according to claim 2, characterized in that, The selecting, from the saved target cells for conditional handover, a cell whose cell measurement result meets a preset residence condition as the target cell for terminal connection reestablishment includes: selecting, from the saved target cells for conditional handover, a cell whose Reference Signal Received Power (RSRP) is greater than a first preset threshold and / or whose Reference Signal Received Quality (RSRQ) is greater than a second preset threshold as the target cell for terminal connection reestablishment.

4. The method according to claim 2, characterized in that, After selecting, from the saved target cells for conditional handover, a cell whose cell measurement result meets a preset residence condition as the target cell for terminal connection reestablishment, the method further includes: triggering the terminal to execute a conditional handover procedure so that the terminal switches to the target cell.

5. The method according to claim 1, characterized in that, The saving a target cell for conditional handover in the conditional reconfiguration message includes: saving the configuration of the target cell for conditional handover in the conditional reconfiguration message to a conditional reconfiguration variable; The determining, according to the saved target cell for conditional handover, a target cell for terminal connection reestablishment includes: determining a target cell for terminal connection reestablishment according to the target cell for conditional handover saved in the conditional reconfiguration variable.

6. The method according to any one of claims 1 to 5, characterized in that, The attempt conditional reconfiguration in the conditional reconfiguration message is in an enabled state.

7. A communication device, characterized in that, including: a receiving module, configured to receive a Radio Resource Control (RRC) reconfiguration message sent by a network device, where the RRC reconfiguration message includes a conditional reconfiguration message; a saving module, configured to save a target cell for conditional handover in the conditional reconfiguration message; a determining module, configured to determine a target cell for terminal connection reestablishment according to the saved target cell for conditional handover during the cell selection process of a connection reestablishment procedure.

8. A computer-readable storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by a processor, it implements the method according to any one of claims 1 to 6.

9. A communication device, wherein, including: a transceiver; a memory; a processor, connected to the transceiver and the memory respectively, configured to control the wireless signal transceiver of the transceiver by executing computer-executable instructions on the memory and be able to implement the method according to any one of claims 1 to 6.

10. A chip, characterized in that, including at least one processor and a communication interface; the communication interface is used to receive signals input to the chip or signals output from the chip, and the processor communicates with the communication interface and implements the method according to any one of claims 1 to 6 through logic circuits or by executing code instructions.

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