Method, device, system and storage medium for activating connection

Abstract

The present application provides a method, device, system and storage medium for activating a connection, the method comprising: a terminal device in an inactive state receives restoration configuration indication information, the restoration configuration indication information is used to instruct the terminal device to restore a radio resource control connection, and restores the radio resource control connection according to a preset rule based on the time point of receiving the restoration configuration indication information. By restoring the radio resource control connection according to the preset rule, the present application can quickly activate the radio resource control connection between the terminal device in an inactive state and the network device, reduce the data transmission delay, and thus meet the low delay requirements of high reliability and low delay communication.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular, to a method, device, system and storage medium for activating a connection. Background Art

[0002] In current communication systems, such as LTE (Long Term Evolution) systems or NR (New Radio) systems, terminal devices in an inactive state can also receive paging from network devices when they are no longer transmitting data with the network device. In addition, in some implementations, both the network device and the terminal device generally save the RRC (Radio Resource Control) connection and data radio bearer configuration information established by the terminal device. In this way, when the terminal device has a data transmission demand again, an RRC connection can be established through a random access procedure, and then the above configuration information can be re-enabled through RRC recovery signaling to activate the connection for data transmission.

[0003] However, the above connection activation process has a delay problem, which does not meet the low delay requirement of URLLC (Ultra Reliable Low Latency Communications).

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the invention

[0005] Embodiments of the present application provide a method, device, system, and storage medium for activating a connection to achieve fast activation of the connection.

[0006] In a first aspect, an embodiment of the present application provides a method for activating a connection, which is applied to a terminal device in an inactive state, and includes the following steps:

[0007] S20, receiving restoration configuration indication information, the restoration configuration indication information instructing the terminal device to restore, not restore, or partially restore an RRC (Radio Resource Control) connection;

[0008] S40: Confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0009] In a possible implementation manner, the above-mentioned confirming whether to restore the radio resource control connection according to the restoration configuration indication information includes:

[0010] During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection; or

[0011] During the random access process, it is determined whether to restore the radio resource control connection.

[0012] In a possible implementation, receiving restoration configuration instruction information includes the following:

[0013] During the radio resource control connection recovery process, receiving recovery configuration indication information; or

[0014] During the random access process, receiving a recovery configuration indication message; or

[0015] During the paging process, recovery configuration indication information is received.

[0016] In a possible implementation, the following further includes:

[0017] Restore the radio resource control connection.

[0018] In a possible implementation manner, after the radio resource control connection is restored, at least one of the following is further included:

[0019] If there is uplink data to be transmitted, send the uplink data;

[0020] Receive downlink data.

[0021] In a second aspect, an embodiment of the present application provides a method for activating a connection, which is applied to a network device and includes the following steps:

[0022] S10, sending restoration configuration indication information, the restoration configuration indication information instructs the terminal device to restore, not restore or partially restore the radio resource control connection, and the terminal device is in an inactive state;

[0023] S30. Confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0024] In a possible implementation manner, the above-mentioned confirming whether to restore the radio resource control connection according to the restoration configuration indication information includes:

[0025] During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection; or

[0026] During the random access process, it is determined whether to restore the radio resource control connection.

[0027] In a possible implementation manner, sending the restoration configuration indication information includes:

[0028] During the radio resource control connection recovery process, sending recovery configuration indication information; or

[0029] During random access, sending a recovery configuration indication message; or

[0030] During the paging process, a restoration configuration indication message is sent.

[0031] In a possible implementation, the following further includes:

[0032] Restore the radio resource control connection.

[0033] In a possible implementation manner, after the radio resource control connection is restored, at least one of the following is further included:

[0034] If there is downlink data to be transmitted, send the downlink data;

[0035] Receive uplink data.

[0036] In a third aspect, an embodiment of the present application provides a device for activating a connection, which is applied to a terminal device in an inactive state, including:

[0037] A transceiver module, configured to receive restoration configuration indication information, wherein the restoration configuration indication information instructs the terminal device to restore, not restore, or partially restore a radio resource control connection;

[0038] The processing module is used to confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0039] In a possible implementation manner, the processing module is specifically used for:

[0040] During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection;

[0041] Or, during the random access process, confirm whether to restore the radio resource control connection.

[0042] In a possible implementation manner, the transceiver module receives the restoration configuration indication information, including:

[0043] During the radio resource control connection recovery process, receiving recovery configuration indication information; or

[0044] During the random access process, receiving a recovery configuration indication message; or

[0045] During the paging process, recovery configuration indication information is received.

[0046] In a possible implementation manner, the processing module is further configured to:

[0047] Restore the radio resource control connection.

[0048] In a possible implementation manner, the transceiver module is further used for:

[0049] After the processing module restores the radio resource control connection, if there is uplink data to be transmitted, the uplink data is sent;

[0050] And / or, after the processing module restores the radio resource control connection, receiving downlink data.

[0051] In a fourth aspect, an embodiment of the present application provides a device for activating a connection, which is applied to a network device, including:

[0052] A transceiver module, used for sending restoration configuration indication information, the restoration configuration indication information instructs the terminal device to restore, not restore or partially restore the radio resource control connection, and the terminal device is in an inactive state;

[0053] The processing module is used to confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0054] In a possible implementation manner, the processing module is specifically used for:

[0055] During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection;

[0056] And / or, during the random access process, confirming whether to restore the radio resource control connection.

[0057] In a possible implementation manner, the transceiver module sends the restoration configuration indication information, including:

[0058] During the radio resource control connection recovery process, sending recovery configuration indication information; or

[0059] During random access, sending a recovery configuration indication message; or

[0060] During the paging process, a restoration configuration indication message is sent.

[0061] In a possible implementation manner, the processing module is further configured to:

[0062] Restore the radio resource control connection.

[0063] In a possible implementation manner, the transceiver module is further used for:

[0064] After the processing module restores the radio resource control connection, if there is downlink data to be transmitted, the downlink data is sent;

[0065] And / or, after the processing module restores the radio resource control connection, receiving uplink data.

[0066] Based on any of the above possible implementations:

[0067] Optionally, the restoration configuration instruction information is carried in at least one of the following ways:

[0068] The subheader in the MAC PDU (Media Access Control Protocol Data Unit);

[0069] CE (Control Element) in the media access control protocol data unit;

[0070] RAR (Random Access Response);

[0071] SDU (Service Data Unit).

[0072] SDU may carry upper layer (RRC) control signaling, including but not limited to RRCResume and RRCConnectionResume signaling. SDU may carry signaling for communication between the terminal and the base station after the random access process.

[0073] Specifically, when the time point of receiving the recovery configuration indication information is in the random access process, and the SDU carries the recovery configuration indication information, the wireless resource control connection is restored after the random access process, for example, the wireless resource control connection is restored during the wireless resource control connection recovery process; when the time point of receiving the recovery configuration indication information is in the random access process, and any one of the sub-header in the medium access control protocol data unit, the control element in the medium access control protocol data unit, and the random access response carries the recovery configuration indication information, the wireless resource control connection is restored during the random access process; when the time point of receiving the recovery configuration indication information is in the wireless resource control connection recovery process, the wireless resource control connection is restored during the wireless resource control connection recovery process.

[0074] Optionally, the restoration configuration indication information is used to indicate at least one of the following:

[0075] Restore the connection with the primary node;

[0076] Restore the secondary cell configured by the master node;

[0077] Restore the connection with the secondary node;

[0078] Restore the secondary cell configured on the secondary node.

[0079] Optionally, the restoration configuration indication information is used to indicate at least one of the following:

[0080] The connection with the primary node is not restored;

[0081] The secondary cell configured by the primary node is not restored;

[0082] The connection with the secondary node is not restored;

[0083] The secondary cell configured on the secondary node is not restored.

[0084] Optionally, the recovery configuration indication information is represented by at least one bit.

[0085] Optionally, at least one of the following is also included:

[0086] If the value of the bit is the first preset value, the restoration configuration indication information is used to indicate restoration of the connection with the primary node;

[0087] If the value of the bit is the second preset value, the restoration configuration indication information is used to indicate restoration of the connection with the secondary node;

[0088] If the value of the bit is the third preset value, the restoration configuration indication information is used to indicate restoration of the secondary cell configured by the master node;

[0089] If the value of the bit is the fourth preset value, the configuration restoration indication information is used to indicate the restoration of the secondary cell configured by the secondary node.

[0090] Optionally, at least one of the following is also included:

[0091] The first preset bit is used to indicate whether to restore the connection with the master node;

[0092] The second preset bit is used to indicate whether to restore the connection with the auxiliary node;

[0093] The third preset bit is used to indicate whether to restore the secondary cell configured by the master node;

[0094] The fourth preset bit is used to indicate whether to restore the secondary cell configured by the secondary node.

[0095] In a fifth aspect, an embodiment of the present application provides a communication device, including: a memory and a processor;

[0096] The memory is used to store program instructions;

[0097] The processor is used to call program instructions in the memory to execute the method as described in any one of the first aspects or the method as described in any one of the second aspects.

[0098] It should be noted that the communication device in the fifth aspect may be a terminal device or a network device in an inactive state, or may be a chip of a terminal device or a chip of a network device.

[0099] In a sixth aspect, an embodiment of the present application provides a communication system, including:

[0100] A terminal device for implementing any one of the first aspects; and

[0101] A network device used to implement any one of the second aspects.

[0102] In the seventh aspect, an embodiment of the present application provides a readable storage medium, on which a computer program is stored; when the computer program is executed, the method described in any one of the first aspect or the method described in any one of the second aspect is implemented.

[0103] In an eighth aspect, an embodiment of the present application provides a program product, the program product includes a computer program, the computer program is stored in a readable storage medium, a processor can read the computer program from the readable storage medium, and the processor executes the computer program to implement the method described in any one of the first aspect or the second aspect.

[0104] The present application provides a method, device, system and storage medium for activating a connection, the method comprising: a terminal device in an inactive state receives recovery configuration indication information, the recovery configuration indication information instructs the terminal device to recover, not recover or partially recover a radio resource control connection, and confirms whether to recover the radio resource control connection according to the recovery configuration indication information. By recovering or partially recovering the radio resource control connection according to the recovery configuration indication information, the present application can quickly activate the radio resource control connection between the terminal device in an inactive state and the network device, reduce the data transmission delay, and thus meet the low delay requirements of high reliability and low delay communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0106] Figure 1a A schematic diagram of the EN-DC scenario;

[0107] Figure 1b A schematic diagram of a multi-radio dual-connection scenario;

[0108] Figure 2 Schematic diagram of the process of two-step random access;

[0109] Figure 3 Schematic diagram of the four-step random access process;

[0110] Figure 4 A schematic diagram of the architecture of a communication system provided in one embodiment of the present application;

[0111] Figure 5A flowchart of a method for activating a connection provided in an embodiment of the present application;

[0112] Figure 6 A schematic diagram of the stages that a terminal device goes through from an inactive state to a connected state provided in an embodiment of the present application;

[0113] Figure 7 A flowchart of a method for activating a connection provided in another embodiment of the present application;

[0114] Figure 8 A schematic diagram showing the structure of a media access control protocol data unit;

[0115] Fig. 9 A schematic diagram of the structure of a device for activating a connection provided in an embodiment of the present application;

[0116] Fig.10 A schematic diagram of the structure of a device for activating a connection provided in another embodiment of the present application;

[0117] Fig.11 A schematic diagram of the structure of a communication device provided in one embodiment of the present application.

[0118] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0119] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0120] In addition, the step codes involved in the embodiments of the present application, such as S10, S30, etc., are intended to more clearly describe the corresponding steps and do not constitute a substantial limitation on the order. When implementing the step codes, those skilled in the art may execute S30 first and then S10, etc., but these should all be within the scope of protection of the present application.

[0121] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0122] It should be understood that, although the terms "first", "second", "third", etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the presence of the described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, “A, B, or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” An exception to this definition will occur only when a combination of elements, functions, steps, or operations are inherently mutually exclusive in some manner.

[0123] First, the terms involved in the embodiments of the present application are explained:

[0124] DC (Dual Connectivity): refers to the terminal device using the same wireless access technology to access two different network devices; or the terminal device using two different wireless access technologies to simultaneously access one or two network devices. Dual connectivity includes: EN-DC (EUTRA-NR Dual Connectivity) and MR-DC (Multi-Radio Dual Connectivity).

[0125] Figure 1a A schematic diagram of the EN-DC scenario is shown in Figure 1. Figure 1aAs shown, the terminal device simultaneously accesses two base stations through the Uu interface: MeNB and SgNB. Specifically, MeNB is a 4G base station that provides S1-MME connection for the terminal device. It is connected to the 4G core network as a control plane anchor point and undertakes all control plane functions, so it is also called "MN (Master Node)"; SgNB is a 5G base station, which has no control plane link directly connected to the core network. There is a control plane link called X2-C between SgNB and MeNB. SgNB does not undertake control plane functions, and its control plane interaction with the core network relies on MeNB, so it is called "SN (Secondary Node)".

[0126] Figure 1b Figure 1 is a schematic diagram of a multi-radio dual-connection scenario. Figure 1b As shown, the terminal device is configured to access two different nodes through the interface Uu respectively and utilize the resources provided by the two different nodes, one node provides new air interface access and the other node provides E-UTRA or new air interface access. One node acts as a master node and the other node acts as a slave node. There is a control plane link called Xn-C between the master node and the slave node, and at least the master node is connected to the core network through the interface NG-C.

[0127] Among them, the connection established between the terminal device and the master node is called MCG (Master Cell Group), and the connection established between the terminal device and the secondary node is called SCG (Secondary Cell Group).

[0128] CA (Carrier Aggregation): refers to the communication between a terminal device and a network device through a PCC (Primary Component Carrier) and at least one SCC (Secondary Component Carrier). The network device can be an eNB in ​​an LTE (Long Term Evolution) system or a base station in a new radio system. The primary component carrier is also called Pcell (Primary Cell) and the secondary component carrier is called Scell ​​(Secondary Cell).

[0129] RA (Random Access): refers to the process from when the terminal device sends a random access preamble to try to access the network device to when a basic signaling connection is established with the network device. The terminal device can initiate random access in a variety of possible scenarios. For example, after the terminal device's state switches from idle to connected, random access is initiated when the terminal device establishes a wireless link with the network device; or, random access is initiated when the terminal device's state switches from inactive to connected, etc.

[0130] The random access involved in the embodiments of the present application may include two-step random access (also referred to as 2-step RA) and four-step random access (also referred to as 4-step RA). For ease of understanding, the processes of two-step random access and four-step random access are described in detail below.

[0131] Figure 2 Figure 1 is a schematic diagram of the two-step random access process. Figure 2 , two-step random access may include:

[0132] S201. The terminal device sends MsgA to the network device.

[0133] MsgA includes a random access preamble and a payload.

[0134] S202: The network device sends MsgB to the terminal device.

[0135] MsgB can be: contention resolution, fallback indication or backoff indication, etc.

[0136] Figure 3 Figure 1 is a schematic diagram of the four-step random access process. Figure 3 , the four-step random access may include:

[0137] S301. The terminal device sends Msg1 to the network device.

[0138] Msg1 includes: a random access preamble, which may also be called a random access preamble sequence, or a preamble, or a preamble sequence.

[0139] S302: The network device sends Msg2 to the terminal device.

[0140] Msg2 may be: a random access response and / or a backoff indication. The backoff indication is used to indicate the backoff time for retransmitting Msg1.

[0141] For CFRA (Contention Free Random Access), the random access process ends after the terminal device successfully receives Msg2. For CBRA (Contention Based Random Access), after the terminal device successfully receives Msg2, it needs to continue to send Msg3 and receive Msg4.

[0142] S303. The terminal device sends Msg3 to the network device.

[0143] Among them, Msg3 is the first scheduled transmission in the random access process, sending a payload.

[0144] S304. The network device sends Msg4 to the terminal device.

[0145] Msg4 is used to indicate whether the terminal device has successfully accessed the network device. Msg4 has the function of resolving contention conflicts. Taking initial access as an example, the conflict resolution is that the terminal device receives the PDSCH (Physical Downlink Shared Channel) of Msg4 and matches the CCCH (Common Control CHannel) service data unit (SDU) in the physical downlink shared channel.

[0146] Inactive state: After the terminal device accesses the network and completes the data transmission, the network device will not directly allow the terminal device to release the radio resource control connection and enter the idle state, but the network device will configure the terminal device to enter the inactive state. After the terminal device enters the inactive state, it does not transmit data with the network device, but can periodically receive paging from the network device. The network device retains the configuration of the radio resource control connection established by the terminal device, the configuration of the bearer, the security configuration, and the n2 interface (the interface between the 5G core network and the base station) and the parameter configuration related to the terminal device. For example, the master node is configured with the main cell group and its secondary cell (also called "MCG Scell"), and the secondary node is also configured with the secondary cell group and its secondary cell (also called "SCG Scell"), etc. The terminal device also needs to save the configuration of the radio resource control connection, the configuration of the bearer and the security configuration, etc. Since both the terminal device and the network device have the radio resource control connection configuration parameters of the terminal device, the terminal device that enters the inactive state can use the saved radio resource control connection configuration parameters to quickly access the network device for data transmission when there is data transmission. Currently, the network device instructs the terminal device to enter an inactive state through RRC release signaling.

[0147] Radio resource control (connection) recovery process: refers to the process in which a terminal device in an inactive state reconnects to a network device and returns to a connected state.

[0148] At present, when a terminal device in an inactive state needs to transmit data again, it establishes a radio resource control connection through a random access procedure, and then re-activates the configuration information stored in the terminal device through radio resource control recovery signaling to activate the connection for data transmission. However, the process of activating the connection does not meet the low latency requirements of high reliability and low latency communication.

[0149] Based on the above problems, the present application provides a method, device, system and storage medium for activating a connection, which can restore the wireless resource control connection faster by advancing the restoration of the wireless resource control connection to the random access process, thereby meeting the low latency requirements of high reliability and low latency communications.

[0150] The method for activating a connection provided in the embodiment of the present application can be applied to Figure 4 The communication system architecture diagram is shown in FIG. Figure 4 As shown, the communication system includes: core network equipment, access network equipment and terminal equipment. Among them, the core network equipment includes: MME (Mobility Management Entity) and SGW (Serving GateWay), and the access network equipment includes: a first base station and a second base station. By way of example, the first base station is an eNB (Evolved NodeB) in a long-term evolution system, and the second base station is a base station of a new air interface system. In the scenario shown in Figure 1, the first base station and the second base station share a core network device, wherein the first base station and the core network device are connected via interface S1, the first base station and the second base station are connected via interface X2, and the terminal device simultaneously accesses the first base station and the second base station via interface Uu. Of course, in other scenarios, the first base station and the second base station may also have their own independent core network devices, respectively, and the embodiments of the present application are not limited thereto.

[0151] It should be noted that Figure 4The communication system shown can be applicable to different network standards, for example, it can be applicable to GSM (Global System of Mobile communication), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), long term evolution system and future 5G network standards. Optionally, the above communication system can be a system in the scenario of high reliability and low latency communication in a 5G communication system.

[0152] Terminal devices can be wireless terminal devices or wired terminal devices. Wireless terminal devices can refer to devices with wireless transceiver functions, which can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water (such as ships, etc.); can also be deployed in the air (such as airplanes, balloons and satellites, etc.). Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, VR (Virtual Reality) terminal devices, AR (Augmented Reality) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, wireless terminal devices in smart homes, wearable devices, etc., without limitation here. It can be understood that in the embodiments of the present application, the terminal device may also be referred to as UE (User Equipment), system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile station (Mobile Station), mobile station (Mobile), remote station (Remote Station), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal) or user agent (User Agent), without limitation herein.

[0153] The following specific embodiments are used to describe in detail the technical solutions of the embodiments of the present application and how the technical solutions of the present application solve the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0154] Figure 5 Flow chart of a method for activating a connection provided by an embodiment of the present application. The present application embodiment provides a method for activating a connection, which is applied to the terminal device as described above, and the terminal device is in an inactive state. Figure 5 As shown, the method of this embodiment includes the following steps:

[0155] S20. Receive restoration configuration indication information, where the restoration configuration indication information instructs the terminal device to restore, not restore, or partially restore the radio resource control connection.

[0156] S40: Confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0157] In order to meet the low latency requirements of high reliability and low latency communication, for the recovery of the radio resource control connection, the embodiment of the present application sets a preset rule for reference when the terminal device recovers the radio resource control connection. Exemplarily, the preset rule can be specifically the timing of recovering the radio resource control connection.

[0158] Specifically, refer to Figure 6 , the terminal device needs to go through the following two stages from the inactive state to the connected state for normal data transmission:

[0159] 1. Random access process;

[0160] 2. The process of re-activating the above configuration information stored in the terminal device via radio resource control recovery signaling, namely, the radio resource control connection recovery process.

[0161] The timing for restoring the radio resource control connection may be any time in the above two stages.

[0162] It should be clarified that the restoration of the wireless resource control connection described in this application refers to re-enabling the configuration information such as the wireless resource control connection configuration, bearer configuration and security configuration stored in the terminal device, and activating the connection for data transmission.

[0163] In the method for activating a connection provided by an embodiment of the present application, a terminal device in an inactive state receives restoration configuration indication information, and the restoration configuration indication information indicates that the terminal device restores, does not restore, or partially restores a radio resource control connection, and further the terminal device confirms whether to restore the radio resource control connection according to the restoration configuration indication information. By restoring or partially restoring the radio resource control connection according to the restoration configuration indication information, the embodiment of the present application can quickly activate the radio resource control connection between the terminal device in an inactive state and the network device, reduce the data transmission delay, and thus meet the low delay requirements of high reliability and low delay communication.

[0164] Based on the above embodiment, illustratively, confirming whether to restore the radio resource control connection according to the restoration configuration indication information may include:

[0165] During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection; or

[0166] During the random access process, it is determined whether to restore the radio resource control connection.

[0167] In actual application, when a terminal device in an inactive state has data to transmit, it needs to return to the connected state again, that is, return from the inactive state to the connected state. At this time, the terminal device needs to initiate a random access process first. During the random access process or the radio resource control connection recovery process, a network device such as a base station sends a recovery configuration indication message to the terminal device. The recovery configuration indication message is used to indicate which connections the terminal device should restore. The terminal device can restore the radio resource control connection during the radio resource control connection recovery process. Therefore, after completing the radio resource control connection recovery process, the terminal device and the network device such as the base station can perform data transmission.

[0168] Alternatively, when a terminal device in an inactive state has data to transmit, it needs to return to a connected state again, that is, from an inactive state to a connected state. At this time, the terminal device needs to initiate a random access process first. During the random access process, network devices such as base stations send recovery configuration indication information to the terminal device. The recovery configuration indication information is used to instruct the terminal device which connections to restore. The terminal device can restore the radio resource control connection during the random access process. Therefore, after completing the random access process, the terminal device and network devices such as base stations can perform data transmission, which speeds up the time to establish a connection and reduces the delay in data interaction.

[0169] It can be known from the above description that the terminal device receives the recovery configuration indication information, which may include: receiving the recovery configuration indication information during the radio resource control connection recovery process; or, receiving the recovery configuration indication information during the random access process; or, receiving the recovery configuration indication information during the paging process. The specific situation depends on actual needs, and this application does not limit this.

[0170] In the random access process, after the radio resource control connection is restored, data transmission can be performed between the terminal device and the network device. Specifically, after the radio resource control connection is restored, the method for activating the connection also includes at least one of the following:

[0171] If there is uplink data to be transmitted, send the uplink data;

[0172] Receive downlink data.

[0173] When the terminal device has uplink data to transmit, it sends the uplink data to the network device; and / or the terminal device receives the downlink data sent by the network device.

[0174] In this embodiment, the radio resource control connection can be restored during the random access process to perform data transmission, thereby reducing the data transmission delay, improving data transmission efficiency, and meeting the low-delay requirements of high-reliability and low-delay communications.

[0175] Corresponding to the steps performed by the terminal device, such as Figure 7 As shown, the steps performed by the network device include:

[0176] S10. Send recovery configuration indication information, where the recovery configuration indication information instructs the terminal device to recover, not recover, or partially recover the radio resource control connection, and the terminal device is in an inactive state.

[0177] S30: Confirm whether to restore the radio resource control connection according to the sent restoration configuration indication information.

[0178] With reference to the above embodiment, the network device confirms whether to restore the radio resource control connection, which is similar to the description of the terminal device confirming whether to restore the radio resource control connection, and will not be repeated here.

[0179] Similar to the terminal device receiving the restoration configuration instruction information, the network device sending the restoration configuration instruction information may include:

[0180] During the radio resource control connection recovery process, sending recovery configuration indication information; or

[0181] During random access, sending a recovery configuration indication message; or

[0182] During the paging process, a restoration configuration indication message is sent.

[0183] In some embodiments, for a terminal device in an inactive state, the network device may have downlink data to transmit to the terminal device. In this case, since normal data transmission cannot be performed between the terminal device in an inactive state and the network device, but a paging message can be received, the network device can carry the restoration configuration indication information through the paging message. Corresponding to the above steps, step S10 may include: sending a paging message. Accordingly, step S20 may include: receiving a paging message. In this way, after receiving the paging message, the terminal device can quickly restore the configuration related to the radio resource control connection during the random access process and activate the radio resource control connection.

[0184] In addition, after restoring the radio resource control connection, the method for activating the connection further includes: if there is downlink data to be transmitted, sending the downlink data; and / or, receiving uplink data.

[0185] It should be understood that the steps executed by the network device correspond to the steps executed by the terminal device in the above-mentioned terminal device side embodiment. Therefore, the beneficial effects corresponding to the terminal device side embodiment can be achieved, which will not be repeated here.

[0186] Next, the carrying method and specific meaning of the restoration configuration instruction information are introduced.

[0187] 1. Regarding the carrying method of the restoration configuration indication information, optionally, the restoration configuration indication information is carried in at least one of the following methods:

[0188] Radio resource control signaling;

[0189] The subheader in the medium access control protocol data unit;

[0190] Control elements in a medium access control protocol data unit;

[0191] Random access response;

[0192] Service Data Unit;

[0193] etc.

[0194] The service data unit may carry control signaling or data. For example, the carried control signaling may be layer 3 (RRC) signaling; and the data may be downlink data.

[0195] Optionally, in implementation, the restoration configuration indication information may be carried in any of the following ways:

[0196] 1. Carrying recovery configuration indication information through the sub-header in the media access control protocol data unit;

[0197] 2. Carrying recovery configuration indication information through the control element in the media access control protocol data unit;

[0198] 3. Carrying recovery configuration indication information through random access response;

[0199] 4. Carrying recovery configuration instruction information through service data unit;

[0200] 5. Carrying the recovery configuration indication information through the sub-header in the medium access control protocol data unit and the control element in the medium access control protocol data unit;

[0201] 6. Carrying recovery configuration indication information through the sub-header and random access response in the medium access control protocol data unit;

[0202] 7. Carrying recovery configuration indication information through the sub-header and service data unit in the medium access control protocol data unit;

[0203] 8. Carrying recovery configuration indication information through control elements in the medium access control protocol data unit and random access response;

[0204] 9. Carrying recovery configuration indication information through control elements and service data units in the media access control protocol data unit;

[0205] 10. Carrying recovery configuration indication information through random access response and service data unit;

[0206] 11. Carrying the recovery configuration indication information through the sub-header in the medium access control protocol data unit, the control element in the medium access control protocol data unit and the random access response;

[0207] 12. Carrying the recovery configuration indication information through the sub-header in the medium access control protocol data unit, the control element in the medium access control protocol data unit, and the service data unit;

[0208] 13. Carrying recovery configuration indication information through control elements in medium access control protocol data units, random access responses and service data units;

[0209] 14. Carry the recovery configuration indication information through the sub-header in the medium access control protocol data unit, the control element in the medium access control protocol data unit, the random access response and the service data unit.

[0210] Figure 8 Figure 2 shows a schematic diagram of the structure of a media access control protocol data unit. Figure 8As shown, the medium access control protocol data unit includes multiple sub-protocol data units (subPDUs), and the sub-protocol data unit may include a sub-header; or, the sub-protocol data unit may include a random access response; or, the sub-protocol data unit may include a sub-header and a random access response; or, the sub-protocol data unit may include a sub-header and a control element; or, the sub-protocol data unit may include a sub-header and a service data unit. Among them, contention resolution is one of the control elements.

[0211] For example, for a two-step random access process, MsgB may be used to carry the restoration configuration indication information; or, for a four-step random access process, Msg2 and / or Msg4 may be used to carry the restoration configuration indication information.

[0212] 2. The specific meaning of the recovery configuration instruction information is described as follows:

[0213] The restoration configuration instruction information may be used to indicate at least one of the following:

[0214] Restore the connection with the primary node;

[0215] Restore the secondary cell configured by the master node;

[0216] Restore the connection with the secondary node;

[0217] Restore the secondary cell configured on the secondary node.

[0218] It can be understood that the restoration configuration indication information can be used to indicate the restoration of the connection with the primary node; or, the restoration configuration indication information can be used to indicate the restoration of the secondary cell configured by the primary node; or, the restoration configuration indication information can be used to indicate the restoration of the connection with the secondary node; or, the restoration configuration indication information can be used to indicate the restoration of the secondary cell configured by the secondary node.

[0219] Alternatively, the restoration configuration indication information may be used to indicate restoration of the connection with the primary node and restoration of the secondary cell configured with the primary node; alternatively, the restoration configuration indication information may be used to indicate restoration of the connection with the primary node and restoration of the secondary cell configured with the secondary node; alternatively, the restoration configuration indication information may be used to indicate restoration of the connection with the primary node and restoration of the secondary cell configured with the secondary node; alternatively, the restoration configuration indication information may be used to indicate restoration of the secondary cell configured with the primary node and restoration of the connection with the secondary node; alternatively, the restoration configuration indication information may be used to indicate restoration of the secondary cell configured with the primary node and restoration of the secondary cell configured with the secondary node; alternatively, the restoration configuration indication information may be used to indicate restoration of the connection with the secondary node and restoration of the secondary cell configured with the secondary node.

[0220] Alternatively, the restoration configuration indication information can be used to indicate restoration of the connection with the primary node, restoration of the secondary cell configured by the primary node, and restoration of the connection with the secondary node; alternatively, the restoration configuration indication information can be used to indicate restoration of the connection with the primary node, restoration of the secondary cell configured by the primary node, and restoration of the secondary cell configured by the secondary node; alternatively, the restoration configuration indication information can be used to indicate restoration of the secondary cell configured by the primary node, restoration of the connection with the secondary node, and restoration of the secondary cell configured by the secondary node.

[0221] Alternatively, the restoration configuration indication information may be used to indicate restoration of the connection with the primary node, restoration of the secondary cell configured by the primary node, restoration of the connection with the secondary node, and restoration of the secondary cell configured by the secondary node.

[0222] It should be noted that the specific meaning of the recovery configuration indication information needs to be set according to actual needs, and this application does not limit the meaning of the recovery configuration indication information in each execution of the method for activating the connection.

[0223] In addition, in practical applications, the recovery configuration indication information may be represented by at least one bit.

[0224] In one implementation, the restoration configuration indication information is represented by at least one bit, which may specifically include at least one of the following:

[0225] If the value of the bit is the first preset value, the restoration configuration indication information is used to indicate restoration of the connection with the primary node;

[0226] If the value of the bit is the second preset value, the restoration configuration indication information is used to indicate restoration of the connection with the secondary node;

[0227] If the value of the bit is the third preset value, the restoration configuration indication information is used to indicate restoration of the secondary cell configured by the master node;

[0228] If the value of the bit is the fourth preset value, the configuration restoration indication information is used to indicate the restoration of the secondary cell configured by the secondary node.

[0229] As an example, the number of bits indicating the restoration configuration indication information is 1, and when the value of the bit is a first preset value, the restoration configuration indication information is used to indicate restoration of the connection with the primary node; when the value of the bit is a second preset value, the restoration configuration indication information is used to indicate restoration of the connection with the secondary node. The first preset value is 0, and the second preset value is 1; or the first preset value is 1, and the second preset value is 0.

[0230] As another example, the number of bits indicating the restoration of the configuration indication information is 2. When the values ​​of these two bits are the first preset value, the restoration of the configuration indication information is used to indicate the restoration of the connection with the primary node; when the values ​​of these two bits are the second preset value, the restoration of the configuration indication information is used to indicate the restoration of the connection with the secondary node; when the values ​​of these two bits are the third preset value, the restoration of the configuration indication information is used to indicate the restoration of the secondary cell configured by the primary node; when the values ​​of these two bits are the fourth preset value, the restoration of the configuration indication information is used to indicate the restoration of the secondary cell configured by the secondary node. Among them, the first preset value is 00, the second preset value is 01, the third preset value is 10, and the fourth preset value is 11. As shown in Table 1:

[0231] Table 1

[0232] 2 bits Restore configuration instructions 00 Restore the connection to the primary node 01 Restore the connection to the secondary node 10 Restore the secondary cell configured by the primary node 11 Restore the secondary cell configured by the secondary node

[0233] Alternatively, optionally, different values ​​of the at least one bit are respectively used to indicate at least one of the following information:

[0234] Restore the connection with the primary node;

[0235] Restore the connection with the secondary node;

[0236] Restore the secondary cell configured by the master node;

[0237] Restore the secondary cell configured on the secondary node.

[0238] The restoration configuration indication information is still represented by 2 bits. When the values ​​of these 2 bits are the first preset value, the restoration configuration indication information is used to indicate the restoration of the connection with the main node; when the values ​​of these 2 bits are the second preset value, the restoration configuration indication information is used to indicate the restoration of the connection with the auxiliary node and the restoration of the connection with the main node; when the values ​​of these 2 bits are the third preset value, the restoration configuration indication information is used to indicate the restoration of the connection with the auxiliary node and the restoration of the secondary cell configured by the main node; when the values ​​of these 2 bits are the fourth preset value, the restoration configuration indication information is used to indicate the restoration of the secondary cell configured by the auxiliary node and the restoration of the secondary cell configured by the main node. Among them, the first preset value is 00, the second preset value is 01, the third preset value is 10, and the fourth preset value is 11. As shown in Table 2:

[0239] Table 2

[0240] 2 bits Restore configuration instructions 00 Restore the connection to the primary node 01 Restore the connection to the secondary node and restore the connection to the primary node 10 Restore the connection with the secondary node and restore the secondary cell configured by the primary node 11 Restore the secondary cell configured by the secondary node and restore the secondary cell configured by the primary node

[0241] By analogy, it can be obtained that when the number of bits representing the recovery configuration indication information is N, N is an integer greater than or equal to 3, the meanings of the recovery configuration indication information under various values ​​are not described here one by one.

[0242] In another implementation, the restoration configuration indication information is represented by at least one bit, which may specifically include at least one of the following:

[0243] The first preset bit is used to indicate whether to restore the connection with the master node;

[0244] The second preset bit is used to indicate whether to restore the connection with the auxiliary node;

[0245] The third preset bit is used to indicate whether to restore the secondary cell configured by the master node;

[0246] The fourth preset bit is used to indicate whether to restore the secondary cell configured by the secondary node.

[0247] Example 1, the number of bits indicating the restoration configuration indication information is 1. When the value of the bit is 1, the restoration configuration indication information is used to indicate restoration of the connection with the master node; when the value of the bit is 0, the restoration configuration indication information is used to indicate not restoration of the connection with the master node. Alternatively, when the value of the bit is 0, the restoration configuration indication information is used to indicate restoration of the connection with the master node; when the value of the bit is 1, the restoration configuration indication information is used to indicate not restoration of the connection with the master node.

[0248] Example 2, indicating that the number of bits of the restoration configuration indication information is 2. Among them, the first bit of the two bits is used as the first preset bit to indicate whether to restore the connection with the primary node, and the second bit of the two bits is used as the second preset bit to indicate whether to restore the connection with the secondary node. Among them, when the value of the corresponding bit is 1, the restoration configuration indication information is used to indicate the restoration of the corresponding configuration; when the value of the bit is 0, the restoration configuration indication information is used to indicate that the corresponding configuration is not restored. For example, when the value of the second preset bit is 1, the restoration configuration indication information is used to indicate the restoration of the connection with the secondary node; when the value of the bit is 0, the restoration configuration indication information is used to indicate that the connection with the secondary node is not restored.

[0249] Example three, indicating that the number of bits of the restoration configuration indication information is 4. Among them, the first bit of the 4 bits is used as the first preset bit to indicate whether to restore the connection with the primary node, and the second bit of the 4 bits is used as the second preset bit to indicate whether to restore the connection with the secondary node; the third bit of the 4 bits is used as the third preset bit to indicate whether to restore the secondary cell configured by the primary node, and the fourth bit of the 4 bits is used as the fourth preset bit to indicate whether to restore the secondary cell configured by the secondary node. Among them, when the value of the corresponding bit is 1, the restoration configuration indication information is used to indicate the restoration of the corresponding configuration; when the value of the bit is 0, the restoration configuration indication information is used to indicate not to restore the corresponding configuration. For example, when the value of the second preset bit is 1, the restoration configuration indication information is used to indicate the restoration of the connection with the secondary node; when the value of the bit is 0, the restoration configuration indication information is used to indicate not to restore the connection with the secondary node. As shown in Table 3:

[0250] Table 3

[0251] 4 bits Restore configuration instructions 0001 Restore the connection to the primary node 0010 Restore the connection to the secondary node 0100 Restore the secondary cell configured by the primary node 1000 Restore the secondary cell configured by the secondary node

[0252] Referring to Table 3, "0011" corresponds to restoring the connection with the primary node and restoring the connection with the secondary node, "1011" corresponds to restoring the connection with the primary node, restoring the connection with the secondary node and restoring the secondary cell configured with the secondary node, etc., which will not be repeated here.

[0253] It should be noted that any of the above embodiments may be implemented independently, or at least two of the above embodiments may be implemented in any combination, and this is not limited.

[0254] It is understandable that in the above-mentioned embodiments, the operations and steps implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the embodiments of the present application do not limit this. The operations and steps implemented by the network device can also be implemented by components (such as chips or circuits) used in the network device, and the embodiments of the present application do not limit this.

[0255] Fig. 9 This is a schematic diagram of the structure of a device for activating a connection provided in an embodiment of the present application. Fig. 9As shown, the device 90 for activating the connection may be a terminal device, or a component of the terminal device (e.g., an integrated circuit, a chip, etc.), or may be other communication modules, for implementing the operation corresponding to the terminal device in any of the above embodiments. The device 90 for activating the connection in this embodiment includes: a transceiver module 91 and a processing module 92. The device 90 for activating the connection in this embodiment may implement the solution of the terminal device in any of the above embodiments through the transceiver module 91 and the processing module 92, and its implementation principle and technical effect are similar, which will not be repeated here.

[0256] Fig.10 This is a schematic diagram of the structure of a device for activating a connection provided by another embodiment of the present application. Fig.10 As shown, the device 100 for activating a connection may be a network device, or a component of a network device (e.g., an integrated circuit, a chip, etc.), or may be other communication modules, for implementing the operation corresponding to the network device in any of the above embodiments. The device 100 for activating a connection in this embodiment includes: a transceiver module 110 and a processing module 120. The device 100 for activating a connection in this embodiment may implement the solution of the network device in any of the above embodiments through the transceiver module 110 and the processing module 120, and its implementation principle and technical effect are similar, and will not be repeated here.

[0257] Fig.11 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. Fig.11 As shown, the communication device 200 described in this embodiment can be the terminal device (or a component that can be used for the terminal device) or the network device (or a component that can be used for the network device) mentioned in the above method embodiment. The communication device 200 can be used to implement the method corresponding to the terminal device or the network device described in the above method embodiment, and specifically refer to the description in the above method embodiment.

[0258] The communication device 200 may include one or more processors 21, which may also be referred to as a processing unit, and may implement certain control or processing functions. The processor 21 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 the communication protocol and communication data, and the central processing unit may be used to control the communication device, execute the software program, and process the data of the software program.

[0259] In a possible design, the processor 21 may also store instructions 23 or data (such as intermediate data). The instructions 23 may be executed by the processor 21, so that the communication device 200 executes the method corresponding to the terminal device or network device described in the above method embodiment.

[0260] In yet another possible design, the communication device 200 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments.

[0261] In a possible implementation, the communication device 200 may include one or more memories 22, on which instructions 24 may be stored. The instructions may be executed on the processor 21, so that the communication device 200 executes the method described in the above method embodiment.

[0262] In a possible implementation, data may also be stored in the memory 22. The processor 21 and the memory 22 may be provided separately or integrated together.

[0263] In a possible implementation, the communication device 200 may further include a transceiver 25 and / or an antenna 26. The processor 21 may be referred to as a processing unit, and controls the communication device 200 (terminal device or core network device or wireless access network device). The transceiver 25 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the communication device 200.

[0264] In one design, if the communication device 200 is used to implement operations corresponding to the terminal device in the above embodiments, for example, the transceiver 25 may receive the restoration configuration indication information. The processor 21 may confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0265] The specific implementation process of the processor 21 and the transceiver 25 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0266] In another design, if the communication device 200 is used to implement the operations corresponding to the network devices in the above embodiments, for example, the transceiver 25 may send the restoration configuration indication information. The processor 21 may confirm whether to restore the radio resource control connection according to the restoration configuration indication information.

[0267] The specific implementation process of the processor 21 and the transceiver 25 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0268] The processor 21 and the transceiver 25 described in the present application may be implemented in an IC (Integrated Circuit), an analog integrated circuit, an RFIC (Radio Frequency Integrated Circuit), a mixed signal integrated circuit, an ASIC (Application Specific Integrated Circuit), a PCB (Printed Circuit Board), an electronic device, etc. The processor 21 and the transceiver 25 may also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N Metal-Oxide-Semiconductor), PMOS (Positive channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0269] Although in the above embodiments, the communication device is described by taking a terminal device or a network device as an example, the scope of the communication device described in the present application is not limited to the above terminal device or network device, and the structure of the communication device may not be limited to the above terminal device or network device. Fig.11 The communication device may be a stand-alone device or may be part of a larger device.

[0270] An embodiment of the present application also provides a communication system, including: a terminal device as in any of the above method embodiments; and a network device as in any of the above method embodiments.

[0271] The present application also provides a communication device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the above-mentioned method when executed by the processor.

[0272] An embodiment of the present application further provides a readable storage medium, on which a computer program is stored, and when the computer program is executed, the method described above is implemented.

[0273] The embodiment of the present application further provides a program product, which includes a computer program code. When the computer program code runs on a computer, the computer executes the methods described in the various possible implementation modes above.

[0274] An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device equipped with the chip executes the methods described in the various possible implementation modes above.

[0275] It should be understood that, although the various steps in the flowcharts in the above-described embodiments are sequentially displayed according to the indications of the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and they can be executed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily to be carried out sequentially, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0276] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The embodiments of the present application are intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and embodiments are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0277] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for activating a connection, characterized in that: Applied to a terminal device in an inactive state, the method includes the following steps: S20. Receive restoration configuration indication information from a network device, wherein the restoration configuration indication information instructs the terminal device to restore, not restore, or partially restore a radio resource control connection; S40, confirming whether to restore the radio resource control connection according to the restoration configuration indication information; The restoration configuration indication information is used to indicate at least one of the following: restoration of the connection with the primary node and restoration or non-restoration of the secondary cell configured by the secondary node, restoration of the connection with the secondary node and restoration or non-restoration of the secondary cell configured by the primary node; The restoration configuration indication information is represented by at least one bit; and the new representation of the restoration configuration indication further includes at least one of the following: The first preset bit is used to indicate whether to restore the connection with the master node; The second preset bit is used to indicate whether to restore the connection with the auxiliary node; The third preset bit is used to indicate whether to restore the secondary cell configured by the master node; The fourth preset bit is used to indicate whether to restore the secondary cell configured by the secondary node.

2. The method according to claim 1, characterized in that The confirming whether to restore the radio resource control connection according to the restoration configuration indication information includes: During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection; or During the random access process, it is confirmed whether to restore the radio resource control connection.

3. The method according to claim 1, characterized in that The receiving restoration configuration indication information includes: During a radio resource control connection recovery process, receiving the recovery configuration indication information; or During a random access process, receiving the restoration configuration indication information; or During the paging process, the restoration configuration indication information is received.

4. The method according to any one of claims 1 to 3, characterized in that The restoration configuration indication information is carried in at least one of the following ways: Radio resource control signaling; The subheader in the medium access control protocol data unit; Control elements in a medium access control protocol data unit; Random access response; Service Data Unit.

5. The method according to claim 1, characterized in that Also includes at least one of the following: If the value of the bit is the first preset value, the restoration configuration indication information is used to indicate restoration of the connection with the primary node; If the value of the bit is the second preset value, the restoration configuration indication information is used to indicate restoration of the connection with the secondary node; If the value of the bit is a third preset value, the restoration configuration indication information is used to indicate restoration of the secondary cell configured by the master node; If the value of the bit is the fourth preset value, the configuration restoration indication information is used to indicate the restoration of the secondary cell configured by the secondary node.

6. The method according to any one of claims 1 to 3, characterized in that Also includes: The radio resource control connection is restored.

7. The method according to claim 6, characterized in that After the radio resource control connection is restored, at least one of the following is further included: If there is uplink data to be transmitted, sending the uplink data; Receive downlink data.

8. A method for activating a connection, characterized in that: Applied to network equipment, including the following steps: S10. Sending restoration configuration indication information to a terminal device, wherein the restoration configuration indication information instructs the terminal device to restore, not restore, or partially restore a radio resource control connection, and the terminal device is in an inactive state; S30, confirming whether to restore the radio resource control connection according to the restoration configuration indication information; The restoration configuration indication information is used to indicate at least one of the following: restoration of the connection with the primary node and restoration or non-restoration of the secondary cell configured by the secondary node, restoration of the connection with the secondary node and restoration or non-restoration of the secondary cell configured by the primary node; The restoration configuration indication information is represented by at least one bit; and the new representation of the restoration configuration indication further includes at least one of the following: The first preset bit is used to indicate whether to restore the connection with the master node; The second preset bit is used to indicate whether to restore the connection with the auxiliary node; The third preset bit is used to indicate whether to restore the secondary cell configured by the master node; The fourth preset bit is used to indicate whether to restore the secondary cell configured by the secondary node.

9. The method according to claim 8, characterized in that The confirming whether to restore the radio resource control connection according to the restoration configuration indication information includes: During the radio resource control connection recovery process, confirming whether to recover the radio resource control connection; or During the random access process, it is confirmed whether to restore the radio resource control connection.

10. The method according to claim 8, characterized in that The sending of restoration configuration indication information includes: During the radio resource control connection recovery process, sending the recovery configuration indication information; or During a random access process, sending the restoration configuration indication information; or During the paging process, the restoration configuration indication information is sent.

11. The method according to any one of claims 8 to 10, characterized in that The restoration configuration indication information is carried in at least one of the following ways: Radio resource control signaling; The subheader in the medium access control protocol data unit; Control elements in a medium access control protocol data unit; Random access response; Service Data Unit.

12. The method according to claim 8, characterized in that Also includes at least one of the following: If the value of the bit is the first preset value, the restoration configuration indication information is used to indicate restoration of the connection with the primary node; If the value of the bit is the second preset value, the restoration configuration indication information is used to indicate restoration of the connection with the secondary node; If the value of the bit is a third preset value, the restoration configuration indication information is used to indicate restoration of the secondary cell configured by the master node; If the value of the bit is the fourth preset value, the configuration restoration indication information is used to indicate the restoration of the secondary cell configured by the secondary node.

13. The method according to any one of claims 8 to 10, characterized in that Also includes: The radio resource control connection is restored.

14. The method according to any one of claims 8 to 10, characterized in that After the radio resource control connection is restored, at least one of the following is further included: If there is downlink data to be transmitted, sending the downlink data; Receive uplink data.

15. A communication system, wherein: include: A terminal device for executing the method according to any one of claims 1 to 7; A network device for executing the method according to any one of claims 8 to 13.

16. A communication device, wherein: include: Memory and processor; The memory is used to store program instructions; The processor is configured to call program instructions in the memory to execute the method according to any one of claims 1 to 7 or 8 to 13.

17. A readable storage medium, wherein: The readable storage medium stores a computer program; when the computer program is executed, the method according to any one of claims 1 to 7 or 8 to 13 is implemented.

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