Connection establishment method and device, communication equipment and storage medium

Abstract

The embodiment of the invention relates to a connection establishment method and device, communication equipment and a storage medium, and the method comprises the steps that user equipment (UE) determines the connection waiting time length of the UE for connecting a target base station based on the reference connection waiting time length; and after a predetermined connection moment, connecting the target base station based on the connection waiting duration.

Description

[0001] The present disclosure is a divisional application of the Chinese application with the application date of October 20, 2020, application number 202080002885.2 and invention name “Connection establishment method, device, communication equipment and storage medium”. Technical Field

[0002] The present application relates to the field of wireless communication technology but is not limited to the field of wireless communication technology, and in particular to a connection establishment method, apparatus, communication equipment, and storage medium. Background Art

[0003] In the fifth generation (5G, 5 th Non-terrestrial networks (NTNs) have been introduced into the 2018 Generation cellular mobile communication system. In NTN systems, the movement of high-altitude platforms such as satellites results in feeder link switching. The wireless links between high-altitude platforms, such as space-based mobile base stations, and service ground stations, such as satellite gateways and core networks, are called feeder links. As satellites move, they establish feeder links with different control network nodes. Summary of the Invention

[0004] In view of this, embodiments of the present disclosure provide a connection establishment method, apparatus, communication device, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a connection establishment method is provided, wherein the method is applied to a user equipment (UE), and the method includes:

[0006] Determining a connection wait time for the UE to connect to a target base station based on a reference connection wait time and a connection wait time scaling factor associated with the UE;

[0007] After the scheduled connection time, the target base station is connected based on the connection waiting time.

[0008] In one embodiment, the method further comprises:

[0009] According to the correspondence between the service characteristic parameter and the connection waiting time scaling factor range, the connection waiting time scaling factor corresponding to the service characteristic parameter associated with the UE is determined.

[0010] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0011] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0012] In one embodiment, determining the connection wait time scaling factor corresponding to the service characteristic parameter associated with the UE according to the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0013] The connection waiting time scaling factor is determined from the connection waiting time scaling factor range corresponding to the service characteristic parameter range to which the service characteristic parameter associated with the UE belongs.

[0014] In one embodiment, determining the connection wait time scaling factor corresponding to the service characteristic parameter associated with the UE according to the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0015] The connection waiting time scaling factor is randomly selected from the connection waiting time scaling factor range corresponding to the service characteristic parameter associated with the UE.

[0016] In one embodiment, the service characteristic parameters include: access identity (Access Identity), and / or access type (Access Category), and / or fifth-generation service quality identification (5QI, 5G QoS Identity) parameters and / or service quality (QoS, Quality of Service) characteristic parameters.

[0017] In one embodiment, the method further comprises at least one of the following:

[0018] receiving indication information indicating the corresponding relationship sent by the serving base station;

[0019] The corresponding relationship is determined based on the agreement of the communication protocol.

[0020] In one embodiment, determining the connection wait time scaling factor corresponding to the service characteristic parameter associated with the UE according to the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0021] In response to at least two of the service characteristic parameters associated with the UE, the connection waiting time scaling factor is determined within the range of the connection waiting time scaling factor with a smaller connection waiting time scaling factor in the at least two connection waiting time scaling factor ranges corresponding to the at least two service characteristic parameters associated with the UE.

[0022] In one embodiment, determining the connection waiting time for the UE to connect to the target base station based on the reference connection waiting time and the connection waiting time scaling factor associated with the UE includes:

[0023] The product of the reference connection waiting time and the connection waiting time scaling coefficient is determined as the connection waiting time of the UE.

[0024] In one embodiment, the method further comprises: randomly selecting the connection waiting time scaling factor, wherein the connection waiting time scaling factor does not exceed a preset time scaling factor range.

[0025] In one embodiment, in response to the reference connection waiting time being the maximum value of the connection waiting time, the range of the connection waiting time scaling factor does not exceed 0 to 1.

[0026] In one embodiment, the method further comprises at least one of the following:

[0027] receiving indication information sent by the serving base station indicating the target base station;

[0028] receiving indication information sent by the serving base station indicating a waiting time of the reference connection;

[0029] Receive indication information sent by the serving base station indicating the scheduled connection time.

[0030] In one embodiment, connecting to the target base station after the predetermined connection time based on the connection waiting time includes at least one of the following:

[0031] In response to the UE being in a connected state, connecting to the target base station after the predetermined connection time and after the connection waiting time;

[0032] In response to the UE being in an idle state or an inactive state and triggering a connection within a connection triggering time interval after the predetermined connection moment, the target base station is connected after the connection is triggered for an interval of the connection waiting time.

[0033] In one embodiment, the method further includes: in response to the UE being in a connected state, synchronizing with the target base station at a predetermined connection time.

[0034] In one embodiment, in response to the UE being in a connected state, connecting to the target base station after the predetermined connection time and for the connection wait time, includes:

[0035] In response to the UE being in a connected state, the UE switches to the target base station or initiates a reestablishment to the target base station after the predetermined connection time and after an interval of the connection waiting time.

[0036] In one embodiment, the method further comprises:

[0037] Receiving instruction information for handover or reestablishment sent by the serving base station;

[0038] The switching to the target base station or initiating a reestablishment to the target base station includes:

[0039] In response to receiving instruction information indicating handover, switching to the target base station;

[0040] In response to receiving the instruction information instructing to perform the reconstruction, the reconstruction is initiated to the target base station.

[0041] In one embodiment, the method further comprises at least one of the following:

[0042] Receiving indication information sent by the network side indicating the time interval for triggering the connection;

[0043] The connection triggering time interval is determined based on the agreement of the communication protocol.

[0044] In one embodiment, the method further includes: in response to the UE being in an idle state or an inactive state and triggering a connection outside a connection triggering time interval after the predetermined connection moment, connecting to the target base station after the connection is triggered.

[0045] According to a second aspect of an embodiment of the present disclosure, a connection establishment method is provided, wherein the method is applied to a base station, and the method includes:

[0046] Sending indication information indicating a target base station, and / or indication information indicating a reference connection waiting time, and / or indication information indicating a scheduled connection time to a user equipment UE;

[0047] The reference connection waiting time is used by the UE to determine the connection waiting time for connecting to the target base station after the scheduled connection time in combination with the connection waiting time scaling factor.

[0048] In one embodiment, the method further comprises:

[0049] Indication information indicating a correspondence between a service characteristic parameter and a connection wait time scaling factor range is sent to the UE, wherein the correspondence is used for the UE to determine the connection wait time scaling factor.

[0050] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0051] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0052] In one embodiment, the method further comprises:

[0053] Instruction information sent to the UE to instruct it to perform switching or reconstruction.

[0054] In one embodiment, the method further comprises:

[0055] Sending indication information indicating the time interval for triggering connection.

[0056] According to a third aspect of an embodiment of the present disclosure, a connection establishment device is provided, which is applied to a user equipment (UE), and the device includes: a first determining module and a first connecting module, wherein:

[0057] The first determining module is configured to determine a connection waiting time for the UE to connect to a target base station based on a reference connection waiting time and a connection waiting time scaling factor associated with the UE;

[0058] The first connection module is configured to connect to the target base station based on the connection waiting time after the scheduled connection time.

[0059] In one embodiment, the apparatus further comprises:

[0060] The second determining module is configured to determine the connection waiting time scaling factor corresponding to the service characteristic parameter associated with the UE according to the correspondence between the service characteristic parameter and the connection waiting time scaling factor range.

[0061] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0062] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0063] In one embodiment, the second determining module includes:

[0064] The first determining submodule is configured to determine the connection waiting time scaling factor from the connection waiting time scaling factor range corresponding to the service characteristic parameter range to which the service characteristic parameter associated with the UE belongs.

[0065] In one embodiment, the second determining module includes:

[0066] The second determining submodule is configured to randomly select the connection waiting time scaling factor from the connection waiting time scaling factor range corresponding to the service characteristic parameter associated with the UE.

[0067] In one embodiment, the service characteristic parameters include: Access Identity, and / or Access Category, and / or fifth generation service quality indicator 5QI parameters, and / or quality of service QoS characteristic parameters.

[0068] In one embodiment, the apparatus further comprises at least one of the following:

[0069] A first receiving module is configured to receive indication information indicating the corresponding relationship sent by the serving base station;

[0070] The third determining module is configured to determine the corresponding relationship based on the agreement of the communication protocol.

[0071] In one embodiment, the second determining module includes:

[0072] The third determination submodule is configured to determine the connection waiting time scaling factor in response to at least two of the service characteristic parameters associated with the UE, within the range of the connection waiting time scaling factor with a smaller connection waiting time scaling factor, within the range of the connection waiting time scaling factor corresponding to the at least two service characteristic parameters associated with the UE.

[0073] In one embodiment, the first determining module includes:

[0074] The fourth determining submodule is configured to determine the product of the reference connection waiting time and the connection waiting time scaling factor as the connection waiting time of the UE.

[0075] In one embodiment, the apparatus further comprises:

[0076] The selection module is configured to randomly select the connection waiting time scaling factor, wherein the connection waiting time scaling factor does not exceed a preset time scaling factor range.

[0077] In one embodiment, in response to the reference connection waiting time being the maximum value of the connection waiting time, the range of the connection waiting time scaling factor does not exceed 0 to 1.

[0078] In one embodiment, the apparatus further comprises at least one of the following:

[0079] A second receiving module is configured to receive indication information sent by the serving base station indicating the target base station;

[0080] A third receiving module is configured to receive indication information sent by the serving base station indicating the reference connection waiting time;

[0081] The fourth receiving module is configured to receive indication information sent by the serving base station, indicating the scheduled connection time.

[0082] In one embodiment, the first connection module includes at least one of the following:

[0083] A first connection submodule is configured to, in response to the UE being in a connected state, connect to the target base station after the predetermined connection time and after the connection waiting time;

[0084] The second connection submodule is configured to respond to the UE being in an idle state or an inactive state and triggering a connection within a connection triggering time interval after the predetermined connection moment, and connect to the target base station after the connection is triggered and the connection wait time interval.

[0085] In one embodiment, the apparatus further comprises:

[0086] A synchronization module is configured to synchronize with the target base station at a predetermined connection time in response to the UE being in a connected state.

[0087] In one embodiment, the first connection submodule includes:

[0088] The connecting unit is configured to, in response to the UE being in a connected state, switch to the target base station or initiate reconstruction to the target base station after the predetermined connection time and at an interval of the connection waiting time.

[0089] In one embodiment, the apparatus further comprises:

[0090] a fifth receiving module, configured to receive instruction information for switching or reestablishment sent by the serving base station;

[0091] The connecting unit includes:

[0092] a first connecting subunit, configured to, in response to receiving instruction information instructing handover, switch to the target base station;

[0093] The second connecting subunit is configured to initiate a reestablishment to the target base station in response to receiving instruction information instructing the reestablishment.

[0094] In one embodiment, the apparatus further comprises at least one of the following:

[0095] a sixth receiving module, configured to receive indication information indicating the time interval for triggering the connection sent by the network side;

[0096] The fourth determining module is configured to determine the connection triggering time interval based on the agreement of the communication protocol.

[0097] In one embodiment, the apparatus further comprises:

[0098] The first connection module is configured to, in response to the UE being in an idle state or an inactive state and triggering a connection outside a connection triggering time interval after the predetermined connection moment, connect to the target base station after the connection is triggered.

[0099] According to a fourth aspect of an embodiment of the present disclosure, a connection establishment device is provided, wherein the device is applied to a base station, and the device includes: a first sending module, wherein:

[0100] The first sending module is configured to send indication information indicating a target base station, and / or indication information indicating a reference connection waiting time, and / or indication information indicating a scheduled connection time to the user equipment UE;

[0101] The reference connection waiting time is used by the UE to determine the connection waiting time for connecting to the target base station after the scheduled connection time in combination with the connection waiting time scaling factor.

[0102] In one embodiment, the apparatus further comprises:

[0103] The second sending module is configured to send indication information indicating the correspondence between the service characteristic parameter and the connection waiting time scaling factor range to the UE, wherein the correspondence is used for the UE to determine the connection waiting time scaling factor.

[0104] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0105] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0106] In one embodiment, the apparatus further comprises:

[0107] The third sending module is configured to send instruction information for switching or reconstruction to the UE.

[0108] In one embodiment, the apparatus further comprises:

[0109] The fourth sending module is configured to send indication information indicating a time interval for triggering a connection.

[0110] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, comprising a processor, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein when the processor runs the executable program, the steps of the connection establishment method described in the first aspect or the second aspect are performed.

[0111] According to a sixth aspect of an embodiment of the present disclosure, a storage medium is provided, which stores computer-executable instructions, wherein the computer-executable instructions, after being executed by a processor, can implement the steps of the connection establishment method described in the first aspect or the second aspect.

[0112] The connection establishment method, apparatus, communication device, and storage medium provided by the embodiments of the present disclosure. A UE determines a connection wait time for connecting to a target base station based on a reference connection wait time and a connection wait time scaling factor associated with the UE. After a predetermined connection time, the UE connects to the target base station based on the connection wait time. In this way, after the predetermined connection time, the target base station is connected based on the connection wait time associated with each UE, thereby reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0113] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0114] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0115] Figure 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment;

[0116] Figure 2 is a schematic diagram showing a feeder link replacement according to an exemplary embodiment;

[0117] Figure 3 is a schematic diagram showing a hard replacement of a feeder link according to an exemplary embodiment;

[0118] Figure 4 is a schematic diagram showing a soft replacement of a feeder link according to an exemplary embodiment;

[0119] Figure 5 is a flow chart showing a connection establishment method according to an exemplary embodiment;

[0120] Figure 6 is a flowchart illustrating another connection establishment method according to an exemplary embodiment;

[0121] Figure 7 is a flow chart illustrating another connection establishment method according to an exemplary embodiment;

[0122] Figure 8 is a block diagram showing a connection establishment device according to an exemplary embodiment;

[0123] Figure 9 is a block diagram showing another connection establishment device according to an exemplary embodiment;

[0124] Figure 10 The present invention is a block diagram showing an apparatus for establishing a connection according to an exemplary embodiment. DETAILED DESCRIPTION

[0125] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0126] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "the," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0127] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, 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 determining".

[0128] Please refer to Figure 1 , which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure. Figure 1 As shown, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12.

[0129] Terminal 11 may refer to a device that provides voice and / or data connectivity to a user. Terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN). Terminal 11 may be an IoT terminal, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT terminal. For example, the terminal may be a fixed, portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, terminal 11 may be a device on an unmanned aerial vehicle (UAV). Alternatively, terminal 11 may be an in-vehicle device, such as a vehicle-mounted computer with wireless communication capabilities, or a wireless communication device connected to an external vehicle-mounted computer. Alternatively, the terminal 11 may also be a roadside device, for example, a street lamp, a traffic light or other roadside device with a wireless communication function.

[0130] The base station 12 may be a network-side device in a wireless communication system. The wireless communication system may be a fourth generation mobile communication technology (4G) system, also known as a long term evolution (LTE) system; or, the wireless communication system may be a 5G system, also known as a new radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. The access network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network). Alternatively, an MTC system.

[0131] Among them, the base station 12 can be an evolved base station (eNB) adopted in a 4G system. Alternatively, the base station 12 can also be a base station (gNB) adopting a centralized distributed architecture in a 5G system. When the base station 12 adopts a centralized distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a protocol stack of a packet data convergence protocol (PDCP) layer, a radio link layer control protocol (RLC) layer, and a media access control (MAC) layer; the distributed unit is provided with a physical (PHY) layer protocol stack. The embodiment of the present disclosure does not limit the specific implementation method of the base station 12.

[0132] A wireless connection can be established between the base station 12 and the terminal 11 via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a wireless air interface based on the next generation mobile communication network technology standard of 5G.

[0133] In some embodiments, E2E (End to End) connections can also be established between terminals 11. For example, in vehicle-to-everything (V2X) communication scenarios such as V2V (vehicle to vehicle), V2I (vehicle to infrastructure), and V2P (vehicle to pedestrian).

[0134] In some embodiments, the wireless communication system may further include a network management device 13 .

[0135] Several base stations 12 are respectively connected to a network management device 13. The network management device 13 can be a core network device in a wireless communication system. For example, the network management device 13 can be a mobility management entity (MME) in an evolved packet core (EPC). Alternatively, the network management device can also be other core network devices, such as a serving gateway (SGW), a public data network gateway (PGW), a policy and charging rules function (PCRF), or a home subscriber server (HSS). The embodiment of the present disclosure does not limit the implementation form of the network management device 13.

[0136] The execution entities involved in the embodiments of the present disclosure include but are not limited to: satellites that achieve non-terrestrial cellular mobile communication network coverage, user equipment such as mobile phone terminals that use cellular mobile communication network technology for wireless communication, and base stations, etc.

[0137] One application scenario of the embodiment of the present disclosure is to replace the feeder link of a low earth orbit (LEO) satellite. Figure 2 As shown in the figure, during the movement of a LEO satellite using transparent transmission, the feeder link established with gateway (GW) 1 will switch to the feeder link established with GW2. GW1 is connected to base station 1, and GW2 is connected to base station 2. In other words, during the movement of the LEO satellite, the feeder link will switch from base station 1 to base station 2. If the satellite can only provide service through one feeder link at a time, when the LEO satellite moves, the RRC connection of all UEs served by base station 1 through gateway GW1 needs to be disconnected. After base station 2 takes over through GW2, each UE may be able to find the reference signal corresponding to base station 2 and access the cell belonging to base station 2.

[0138] There are two ways to replace a feeder link: hard replacement and soft replacement.

[0139] Feeder link hard replacement Figure 3As shown in the figure, when a LEO satellite performing transparent transmission undergoes a hard feeder link change (i.e., only one feeder link connection through this satellite is available during the GW transition), the signal of the cell served by the LEO satellite will be unavailable between the time it leaves the old GW (T1) and the time it connects to the new GW (T2). If the old and new GWs correspond to different base stations, the UE must reconnect to the cell served by the LEO satellite.

[0140] Feeder link soft replacement Figure 4 As shown in Figure 1, when a transparent transmission LEO satellite performs a hard feeder link change, that is, during the GW transition, two feeder link connections through this satellite are available. During the time between leaving the old GW at time T1 and connecting to the new GW at time T2, the signal of the cell served by the LEO satellite during the GW transition is available for both base station 1 and base station 2. The UE can change its serving cell during the feeder link change process.

[0141] Two possible solutions for establishing a connection between the UE and the base station are proposed for feeder link replacement, including:

[0142] Solution 1: Hard replacement of feeder links based on precise time control.

[0143] Since there is no overlap between the source cell and the target cell of the base stations located in the new and old GWs, the handover can only be controlled based on the accurate time. Figure 3 In the feeder link hard replacement process shown, the handover command needs to be sent to all UEs served by the LEO satellite before T1, so a time-triggered conditional handover (CHO) approach can be used. The UE can initiate the handover process after T2, so the handover command should include a handover trigger time.

[0144] Solution 2: Feeder link hard handover procedure based on conditional Radio Resource Control (RRC) reconstruction.

[0145] Considering that NTN cells are large, sending handover (HO) commands to a large number of UEs in a short period of time may be an extremely difficult problem.

[0146] Some UEs may not be able to perform HO in a timely manner, and therefore may detect a radio link failure, which then triggers the UE to initiate the RRC re-establishment procedure. Re-establishing the RRC connection takes a long time and may involve radio link failure (RLF) detection, cell selection, and possible re-establishment failures, impacting service continuity. Therefore, the network can provide auxiliary information, such as the target cell ID and / or re-establishment conditions. This auxiliary information can be sent to UEs individually via a System Information Block (SIB) rather than dedicated signaling, effectively reducing the signaling overhead incurred by a large number of UEs.

[0147] For Solution 1, considering that all UEs within the LEO satellite service cell have the same target base station, they can broadcast the same handover target base station and trigger time to all UEs before time T1. This effectively reduces signaling overhead. However, this can cause a large number of UEs to perform handovers simultaneously, leading to network congestion. Similarly, for Solution 2, when a large number of UEs detect radio link failure and initiate RRC reestablishment, network congestion can also occur.

[0148] like Figure 5 As shown, this exemplary embodiment provides a connection establishment method, which can be applied to a user equipment UE for wireless communication, including:

[0149] Step 501: Determine a connection waiting time for the UE to connect to a target base station based on a reference connection waiting time and a connection waiting time scaling factor associated with the UE;

[0150] Step 502: After the scheduled connection time, based on the connection waiting time, connect to the target base station.

[0151] A UE can be a mobile phone terminal that uses cellular mobile communication network technology for wireless communication. The UE can establish a communication connection with a serving base station through transparent forwarding of a feeder connection between a high-altitude platform (such as a satellite) and a satellite ground station (such as a gateway). Table 1 shows the high-altitude platforms.

[0152] Table 1

[0153]

[0154] In Table 1, except for GEO satellites, other high-altitude platforms usually require feeder link replacement during movement. The method of the embodiment of the present invention can be used in, but is not limited to, NTN communication systems where feeder link replacement occurs.

[0155] The following embodiments of the present invention illustrate the method of the present invention by using an NTN communication system based on a LEO satellite platform, but this does not mean that the method of the present invention is only applicable to the NTN communication system based on a LEO satellite platform.

[0156] like Figure 2 As shown in the figure, during the movement of a LEO satellite using transparent transmission, the feeder link established with gateway (GW) 1 will switch to the feeder link established with GW2. GW1 is connected to base station 1, and GW2 is connected to base station 2. In other words, during the movement of the LEO satellite, the feeder link will switch from base station 1 to base station 2. Here, the base station can be a gNB in ​​5G cellular mobile communications.

[0157] The target base station is the base station that the UE switches from the current serving base station during the LEO satellite movement. Figure 2 As mentioned above, at time T1, gNB1 is connected to the UE via GW1 and the LEO satellite, making gNB1 the UE's serving base station. During LEO satellite movement, from T1 to T2, the UE's connected base station changes from gNB1 to gNB2. gNB2 is the target base station.

[0158] The reference connection waiting time may be a fixed time period, may be specified by a communication protocol, or may be determined by the core network or base station based on the number of UEs covered by LEO satellite signals and / or the number of UEs that need to connect to the target base station.

[0159] The connection wait time scaling factor can be used to adjust the UE's connection wait time based on the reference connection wait time. The connection wait time scaling factor is associated with the UE and can vary for different UEs. The connection wait time scaling factor can be associated with the UE type or the UE's current service characteristics.

[0160] Based on the reference connection wait time and the connection wait time scaling factor associated with the UE, the connection wait time of each UE can be obtained. Due to different connection wait time scaling factors, the connection wait time of each UE is also different. Exemplarily, the product of the reference connection wait time and the connection wait time scaling factor can be multiplied together, or the quotient of the reference connection wait time and the connection wait time scaling factor can be divided together to determine the connection wait time, wherein, when the connection wait time is determined by division, the connection wait time scaling factor is not 0. Here, the connection wait time scaling factor can be a non-negative number less than or equal to 1, or a positive number greater than 1.

[0161] The scheduled connection time may be the time when the serving base station indicates to start switching to the target base station, or the time when the satellite establishes a connection with the target base station. Figure 2The scheduled connection time may be time T2. The UE may connect to the target base station based on the scheduled connection time and the connection wait time. For example, the UE may connect to the target base station after the scheduled connection time and after the connection wait time. Because the connection wait time varies for each UE, the time at which the UE connects to the target base station also varies. This reduces the number of UEs connected to the target base station at the same time, thereby alleviating network congestion.

[0162] In this way, after the scheduled connection time, the target base station is connected based on the connection waiting time associated with each UE, thereby reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0163] In one embodiment, the method further comprises:

[0164] According to the correspondence between the service characteristic parameter and the connection waiting time scaling factor range, the connection waiting time scaling factor corresponding to the service characteristic parameter associated with the UE is determined.

[0165] Here, the service characteristic parameter may be a type parameter, priority parameter, rate parameter, and / or transmission quality requirement parameter of the data currently transmitted by the UE. For example, the service characteristic parameter may be a priority level in QoS. Different service characteristic parameters are associated with different connection wait time scaling factor ranges.

[0166] The UE may determine the connection wait time scaling factor from within a range of connection wait time scaling factors corresponding to its current service characteristic parameters. The UE may determine the connection wait time scaling factor from within the range of connection wait time scaling factors based on a predetermined selection rule. For example, the predetermined selection rule may specify selecting a corresponding connection wait time scaling factor from the range of connection wait time scaling factors based on the UE's signal strength.

[0167] Exemplarily, the UE obtains the correspondence between the connection waiting time scaling factor and the service characteristic parameter AccessIdentity through system broadcast. When Access Identity = 1, the connection waiting time scaling factor ∈ [Pl_1, Pu_1], where 0≤Pl_1≤Pu_1≤1, when Access Identity = 2, the connection waiting time scaling factor ∈ [Pl_2, Pu_2], where 0≤Pl_2≤Pu_2≤1, Access Identity = 11, 12, ..., etc., the settings are the same as above.

[0168] If the Access Identity stored in the UE is 1, the service characteristic parameter range corresponding to this UE is [Pl_1, Pu_1].

[0169] The UE can determine the connection waiting duration scaling factor within the range of [Pl_1, Pu_1].

[0170] In this way, UEs with different service characteristic parameters obtain different value ranges of the connection waiting duration scaling factor, and the obtained connection waiting duration scaling factors are different, so that different connection waiting durations can be determined. Based on different connection waiting durations, the UE connects to the target base station, reducing the number of UEs connecting to the target base station at the same time and alleviating the network congestion situation.

[0171] In one embodiment, the correspondence between the service characteristic parameter and the range of the connection waiting duration scaling factor includes:

[0172] The correspondence between the service characteristic parameter range and the range of the connection waiting duration scaling factor.

[0173] Since the number of available values of the service characteristic parameter is relatively large, a correspondence between the service characteristic parameter range and the range of the connection waiting duration scaling factor can be established. The available values of the service characteristic parameter can be divided into multiple different ranges, and each service characteristic parameter range corresponds to a range of the connection waiting duration scaling factor. The ranges of the connection waiting duration scaling factors corresponding to different service characteristic parameter ranges can be the same or different.

[0174] The UE can determine the connection waiting duration scaling factor based on the correspondence between the service characteristic parameter range and the range of the connection waiting duration scaling factor.

[0175] Exemplarily, the service characteristic parameter can be the packet delay budget (PDB). All PDBs can be divided into N ranges, where N is a positive integer greater than or equal to 1. Each PDB range corresponds to a range of the connection waiting duration scaling factor. The UE can select the PDB range corresponding to its own PDB, and then determine the corresponding range of the connection waiting duration scaling factor.

[0176] For example, the PDB sequence is PDBreference = {PDBreference_1,..., PDUeference_n,..., PDBreference_N}, where 0 < PDBreference_1 <,..., < PDBreference_n <,..., < PDBreference_N. And obtain the connection waiting duration scaling factor corresponding to each PDB, and denote the sequence composed of the connection waiting duration scaling factors as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1.

[0177] The UE obtains the PDB corresponding to the QoS (flow) Flow according to the 5QI of the ongoing service.

[0178] If 0 ≤ PDB ≤ PDBreference_1, the UE can determine the connection waiting duration scaling factor within the range [0, P_1] of the connection waiting duration scaling factor. If PDBminreference_n-1 < PDBmin ≤ PDBminreference_n, the UE can determine the connection waiting duration scaling factor within the range (P_n-1, P_n] of the connection waiting duration scaling factor.

[0179] If PDBmin > PDUminreference_N, the UE can determine the connection waiting duration scaling factor within the range (P_n, 1] of the connection waiting duration scaling factor.

[0180] In one embodiment, determining the connection waiting duration scaling factor corresponding to the service characteristic parameter associated with the UE according to the corresponding relationship between the service characteristic parameter and the range of the connection waiting duration scaling factor includes:

[0181] Determining the connection waiting duration scaling factor from within the range of the connection waiting duration scaling factor corresponding to the range of the service characteristic parameter to which the service characteristic parameter associated with the UE belongs.

[0182] Exemplarily, the service characteristic parameter can be PDB. All PDBs can be divided into N ranges, where N is a positive integer greater than or equal to 1. Each PDB range corresponds to a range of the connection waiting duration scaling factor. The UE can select the PDB range to which its own PDB belongs, then determine the range of the connection waiting duration scaling factor corresponding to this PDB range, and further determine the connection waiting duration scaling factor from within the range of the connection waiting duration scaling factor.

[0183] In one embodiment, determining the connection waiting duration scaling factor corresponding to the service characteristic parameter associated with the UE according to the corresponding relationship between the service characteristic parameter and the range of the connection waiting duration scaling factor includes:

[0184] Randomly selecting the connection waiting duration scaling factor from within the range of the connection waiting duration scaling factor corresponding to the service characteristic parameter associated with the UE.

[0185] Here, the UE can randomly take a value from within the determined range of the connection waiting duration scaling factor as its own connection waiting duration scaling factor.

[0186] Exemplarily, the UE can generate a random number rand within the range of the connection waiting duration scaling factor. This random number can be evenly distributed within the range of the connection waiting duration scaling factor. Based on the randomly generated connection waiting duration scaling factor, in combination with the reference connection waiting duration, the connection waiting duration is determined.

[0187] In this way, by randomly selecting values ​​within the connection wait time scaling factor range, the number of identical values ​​is reduced, thereby reducing the number of identical connection wait time values. UEs connect to the target base station based on different connection wait times, reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0188] In one embodiment, the service characteristic parameters include: Access Identity, and / or Access Category, and / or fifth generation service quality identifier 5QI parameters and / or quality of service QoS characteristic parameters.

[0189] The 5G system should be able to limit UE access to the network using relevant restriction parameters. These restriction parameters vary according to the Access Identity and Access Category. The Access Identity is configured on the UE, as shown in Table 2. The Access Category is defined by a combination of UE-related conditions and the access attempt type, as shown in Table 3.

[0190] Table 2

[0191]

[0192]

[0193] Table 3

[0194]

[0195] In the 5G system, the QoS model is based on QoS flows. QoS flows are protocol data units (PDUs), the finest QoS differentiation granularity in a PDU session. This means that the difference between two PDU sessions lies in their different QoS flows. In the 5G system, a QoS flow identifier (QFI) is used to identify a QoS flow. The QFI can be dynamically configured or equal to the 5QI.

[0196] Standardized 5QI values ​​are used to specify commonly used services and can be mapped to 5G QoS features. The mapping between standardized 5QI values ​​and 5G QoS features is shown in Table 4.

[0197] Table 4

[0198]

[0199]

[0200]

[0201]

[0202] In one embodiment, the method further comprises at least one of the following:

[0203] receiving indication information indicating the corresponding relationship sent by the serving base station;

[0204] The corresponding relationship is determined based on the agreement of the communication protocol.

[0205] Here, the correspondence between the service characteristic parameters and the connection wait time scaling factor range can be sent by the serving base station to the UE. The serving base station can broadcast the correspondence to the UE. For example, the serving base station can include indication information indicating the correspondence in system information broadcast. After receiving the system information, the UE determines the correspondence.

[0206] The correspondence between the service characteristic parameters and the connection wait time scaling factor range may also be agreed upon by the communication protocol, and the user equipment may determine the correspondence based on the communication protocol. The correspondence between the service characteristic parameters and the connection wait time scaling factor range may also be agreed upon by the serving base station and the UE, and the user equipment may determine the connection wait time scaling factor based on the agreed correspondence.

[0207] In one embodiment, determining the connection wait time scaling factor corresponding to the service characteristic parameter associated with the UE according to the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0208] In response to at least two of the service characteristic parameters associated with the UE, the connection waiting time scaling factor is determined within the range of the connection waiting time scaling factor with a smaller connection waiting time scaling factor in the at least two connection waiting time scaling factor ranges corresponding to the at least two service characteristic parameters associated with the UE.

[0209] A UE can typically transmit data for multiple services simultaneously, with different service characteristic parameters for the multiple services, or different data within a service having different service characteristic parameters. That is, the UE can currently have multiple service characteristic parameters, each of which can correspond to a connection wait time scaling factor range.

[0210] Here, the UE may select from the range of connection wait time scaling factors having a smaller connection wait time scaling factor.

[0211] Exemplarily, the UE obtains the correspondence between the service characteristic parameter range and the connection waiting duration scaling factor range through system broadcast. Among them, the service characteristic parameter can be PDB. Let the sequence of PDB reference values be PDBminreference = {PDBminreference_1,..., PDUminreference_n,..., PDBminreference_N}, where 0 < PDBminreference_1 <,..., < PDBminreference_n <,..., < PDBminreference_N. And obtain the connection waiting duration scaling factor corresponding to each PDB, and denote the sequence composed of the connection waiting duration scaling factors as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1.

[0212] The UE can obtain the corresponding PDB according to the 5QI of all uplink and downlink QoS Flows of the ongoing service, and obtain the minimum value PDBmin of the PDBs corresponding to all QoS Flows. The connection waiting duration scaling factor range corresponding to PDBmin has a smaller connection waiting duration scaling factor. The UE can select the connection waiting duration within the connection waiting duration scaling factor range corresponding to PDBmin.

[0213] If 0 ≤ PDBmin ≤ PDBminreference_1, the UE can take a value in [0, P_1] as the connection waiting duration.

[0214] If PDBminreference_n - 1 < PDBmin ≤ PDBminreference_n, the UE can take a value in (P_n - 1, P_n] as the connection waiting duration.

[0215] If PDBmin > PDUminreference_N, the UE can take a value in (P_n, 1] as the connection waiting duration.

[0216] For another example, the UE obtains the correspondence between the service characteristic parameter range and the connection waiting duration scaling factor range through system broadcast. Among them, the service characteristic parameter can be Access Identity. When Access Identity = 1, the connection waiting duration scaling factor ∈ [Pl_1, Pu_1], where 0 ≤ Pl_1 ≤ Pu_1 ≤ 1. When Access Identity = 2, the connection waiting duration scaling factor ∈ [Pl_2, Pu_2], where 0 ≤ Pl_2 ≤ Pu_2 ≤ 1. When Access Identity = 11, 12,..., etc., the setting is the same.

[0217] If there are two Access Identities in the UE, namely 1 and 2. Pl_1>Pl_2 and Pu_1>Pu_2, then Pl_new=Pl_2, Pu_new=Pu_2, that is, the connection waiting time scaling factor corresponding to this UE is in the range of [Pl_2, Pu_2].

[0218] The UE can take the value in [Pl_2, Pu_2] as the connection waiting time.

[0219] In one embodiment, determining the connection waiting time for the UE to connect to the target base station based on the reference connection waiting time and the connection waiting time scaling factor associated with the UE includes:

[0220] The product of the reference connection waiting time and the connection waiting time scaling coefficient is determined as the connection waiting time of the UE.

[0221] After determining the connection wait time scaling factor, the UE may multiply the reference connection wait time by the connection wait time scaling factor, and determine the product as the connection wait time.

[0222] Exemplarily, after the UE determines the connection wait time scaling factor range, the UE generates a random number rand within the connection wait time scaling factor range. The random number may be evenly distributed within the connection wait time scaling factor range. The corresponding connection wait time of the UE is: rand*T0, where T0 is the reference connection wait time.

[0223] In one embodiment, the method further comprises: randomly selecting the connection waiting time scaling factor, wherein the connection waiting time scaling factor does not exceed a preset time scaling factor range.

[0224] If the base station does not broadcast the correspondence between the service characteristic parameters and the connection waiting time scaling factor range, the UE may take a random number within the preset time scaling factor range as the waiting time scaling factor.

[0225] Here, the preset duration scaling factor range can be pre-set. The preset duration scaling factor range can be the same as or different from the connection waiting duration scaling factor range.

[0226] In one embodiment, in response to the reference connection waiting time being the maximum value of the connection waiting time, the range of the connection waiting time scaling factor does not exceed 0 to 1.

[0227] Here, the reference connection waiting time may be a maximum value of the connection waiting time. For the reference connection waiting time, the connection waiting time scaling factor ranges from [0, 1].

[0228] In one embodiment, the method further comprises at least one of the following:

[0229] receiving indication information sent by the serving base station indicating the target base station;

[0230] receiving indication information sent by the serving base station indicating a waiting time of the reference connection;

[0231] Receive indication information sent by the serving base station indicating the scheduled connection time.

[0232] Here, the indication information indicating the target base station, and / or the indication information indicating the reference connection waiting time, and / or the indication information indicating the scheduled connection time can be sent by the serving base station to the UE. The serving base station can send the indication information indicating the target base station, and / or the indication information indicating the reference connection waiting time, and / or the indication information indicating the scheduled connection time to the UE by broadcasting. For example, the serving base station can carry the indication information indicating the target base station, and / or the indication information indicating the reference connection waiting time, and / or the indication information indicating the scheduled connection time in the system information for broadcast.

[0233] Here, the indication information indicating the target base station may be a base station identifier of the target base station, etc.

[0234] The UE determines the target base station, the scheduled connection time Te and / or the reference connection waiting time T0, etc. by receiving the indication information sent by the serving base station.

[0235] In one embodiment, connecting to the target base station after the predetermined connection time based on the connection waiting time includes at least one of the following:

[0236] In response to the UE being in a connected state, connecting to the target base station after the predetermined connection time and after the connection waiting time;

[0237] In response to the UE being in an idle state or an inactive state and triggering a connection within a connection triggering time interval after the predetermined connection moment, the target base station is connected after the connection is triggered for an interval of the connection waiting time.

[0238] The serving base station can indicate a time-based CHO mode to the UE. The serving base station can send indication information indicating the target base station, the scheduled connection time Te, and / or the reference connection wait time T0. The UE in the connected state receives the indication information sent by the serving base station to determine the target base station, the scheduled connection time Te, and / or the reference connection wait time T0. The scheduled connection time Te can be the triggering time of CHO. The UE can determine the connection wait time based on the reference connection wait time. After the scheduled connection time, the UE continues to wait for the connection wait time before connecting to the target base station.

[0239] In this way, UEs in a connected state connect to a target base station based on different connection waiting times, thereby reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0240] If a UE is idle or inactive at the scheduled connection time, a trigger connection interval can be set. This trigger connection interval occurs after the scheduled connection time. This trigger connection interval can be a period of time during which UEs frequently switch from a serving base station to a target base station. If a UE that is idle or inactive within the trigger connection interval triggers a connection to a base station, and if a connection establishment request message needs to be sent, the UE can wait for the connection wait time after triggering the connection to the base station before connecting to the target base station. That is, when it is determined that a connection establishment request message needs to be sent, the connection establishment request message can be sent after the connection wait time has elapsed.

[0241] In one embodiment, the method further comprises at least one of the following:

[0242] Receiving indication information sent by the network side indicating the time interval for triggering the connection;

[0243] The connection triggering time interval is determined based on the agreement of the communication protocol.

[0244] Here, the base station may send indication information indicating the connection triggering time interval to the UE by broadcasting, etc. Here, the base station may be a serving base station of an idle or inactive UE in a connected state, or an anchor base station of an idle or inactive UE, etc.

[0245] Exemplarily, an idle UE obtains a connection triggering time interval Tx through network broadcast, where Tx may be less than or equal to a reference connection waiting time T0. When the predetermined connection time Te is reached, Tx is started. If the idle UE initiates transmission of a connection establishment request message before Tx times out, the connection waiting time T is started. When T times out, the UE sends a connection establishment request message to connect to the target base station.

[0246] The time interval for triggering connection may also be agreed upon in the communication protocol. The UE may determine the time interval for triggering connection based on the communication protocol.

[0247] The connection triggering time interval may also be negotiated by the base station and the UE, and the user equipment determines the connection waiting time scaling factor based on the negotiated connection triggering time interval.

[0248] In this way, UEs in an idle or inactive state connect to a target base station based on different connection waiting times, thereby reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0249] In one embodiment, the method further includes: in response to the UE being in an idle state or an inactive state and triggering a connection outside a connection triggering time interval after the predetermined connection moment, connecting to the target base station after the connection is triggered.

[0250] The trigger connection interval can be a time period when UEs frequently switch from the serving base station to the target base station. After the trigger connection interval, the number of UEs switching from the serving base station to the target base station decreases, reducing network congestion. Therefore, if a UE in an idle or inactive state triggers a connection to the base station after the trigger connection interval, it can directly establish a connection with the target base station. This reduces waiting time and improves the timeliness of connection to the target base station.

[0251] In one embodiment, the method further includes: in response to the UE being in a connected state, synchronizing with the target base station at a predetermined connection time.

[0252] During the process of establishing a connection between the UE and the target base station, such as during random access, the UE needs to synchronize with the target base station. The UE can synchronize with the target base station at the scheduled connection time, thereby improving the efficiency of establishing the RRC connection during the connection waiting period.

[0253] For example, when the scheduled connection time is reached, the UE may start a timer to wait for a connection time of T, and the UE and the target base station cell are connected. When T times out, a handover process such as random access and RRC reconfiguration is initiated.

[0254] Alternatively, when the scheduled connection time is reached, the UE may start a timer to set a connection waiting time T. When T times out, the UE is triggered to synchronize cells with the target base station, initiate random access, RRC reconfiguration and other handover processes.

[0255] In one embodiment, in response to the UE being in a connected state, connecting to the target base station after the predetermined connection time and for the connection wait time, includes:

[0256] In response to the UE being in a connected state, the UE switches to the target base station or initiates a reestablishment to the target base station after the predetermined connection time and after an interval of the connection waiting time.

[0257] Here, connecting to the target base station may include switching to the target base station, or initiating a reestablishment to the target base station.

[0258] In one embodiment, the method further includes: receiving instruction information for handover or reestablishment sent by the serving base station;

[0259] The switching to the target base station or initiating a reestablishment to the target base station includes:

[0260] In response to receiving instruction information indicating handover, switching to the target base station;

[0261] In response to receiving the instruction information instructing to perform the reconstruction, the reconstruction is initiated to the target base station.

[0262] The serving base station may send an indication message to the UE, instructing the UE to switch to the target cell or to reestablish the connection with the target cell. The serving base station may send the indication message in a broadcast manner.

[0263] Exemplarily, the serving base station broadcasts instructions to the UE to connect to the target base station via handover. The UE uses the identifier of the target base station of the serving base station to find the corresponding configuration in the CHO and subsequently trigger the handover. If the corresponding configuration is not found in the CHO, a reestablishment can be triggered.

[0264] If the serving base station instructs the UE to connect to the target base station in a reestablishment manner by broadcasting, when the UE adopts the reestablishment, the UE initiates the reestablishment to the target base station according to the identifier of the target base station broadcasted by the network.

[0265] like Figure 6 As shown, this exemplary embodiment provides a connection establishment method, which can be applied to a base station of wireless communication, including:

[0266] Step 601: Sending indication information indicating a target base station, and / or indication information indicating a reference connection waiting time, and / or indication information indicating a scheduled connection time to a UE;

[0267] The reference connection waiting time is used by the UE to determine the connection waiting time for connecting to the target base station after the scheduled connection time in combination with the connection waiting time scaling factor.

[0268] A UE can be a mobile phone terminal that uses cellular mobile communication network technology for wireless communication. The UE can establish a communication connection with a serving base station through transparent forwarding of a feeder connection between a high-altitude platform (such as a satellite) and a satellite ground station (such as a gateway). Table 1 shows the high-altitude platforms.

[0269] In Table 1, except for GEO satellites, other high-altitude platforms usually require feeder link replacement during movement. The method of the embodiment of the present invention can be used in, but is not limited to, NTN communication systems where feeder link replacement occurs.

[0270] The following embodiments of the present invention illustrate the method of the present invention by using an NTN communication system based on a LEO satellite platform, but this does not mean that the method of the present invention is only applicable to the NTN communication system based on a LEO satellite platform.

[0271] like Figure 2 As shown in the figure, during the movement of a LEO satellite using transparent transmission, the feeder link established with gateway (GW) 1 will switch to the feeder link established with GW2. GW1 is connected to base station 1, and GW2 is connected to base station 2. In other words, during the movement of the LEO satellite, the feeder link will switch from base station 1 to base station 2. Here, the base station can be a gNB in ​​5G cellular mobile communications.

[0272] The target base station is the base station that the UE switches from the current serving base station during the LEO satellite movement. Figure 2 As mentioned above, at time T1, gNB1 is connected to the UE via GW1 and the LEO satellite, making gNB1 the UE's serving base station. During LEO satellite movement, from T1 to T2, the UE's connected base station changes from gNB1 to gNB2. gNB2 is the target base station.

[0273] The reference connection waiting time may be a fixed time period, may be specified by a communication protocol, or may be determined by the core network or base station based on the number of UEs covered by LEO satellite signals and / or the number of UEs that need to connect to the target base station.

[0274] The connection wait time scaling factor can be used to adjust the UE's connection wait time based on the reference connection wait time. The connection wait time scaling factor is associated with the UE and can vary for different UEs. The connection wait time scaling factor can be associated with the UE type or the UE's current service characteristics.

[0275] Based on the reference connection wait time and the connection wait time scaling factor associated with the UE, the connection wait time of each UE can be obtained. Due to different connection wait time scaling factors, the connection wait time of each UE is also different. Exemplarily, the product of the reference connection wait time and the connection wait time scaling factor can be multiplied together, or the quotient of the reference connection wait time and the connection wait time scaling factor can be divided together to determine the connection wait time, wherein, when the connection wait time is determined by division, the connection wait time scaling factor is not 0. Here, the connection wait time scaling factor can be a non-negative number less than or equal to 1, or a positive number greater than 1.

[0276] The scheduled connection time may be the time when the serving base station indicates to start switching to the target base station, or the time when the satellite establishes a connection with the target base station. Figure 2 The scheduled connection time may be time T2. The UE may connect to the target base station based on the scheduled connection time and the connection wait time. For example, the UE may connect to the target base station after the scheduled connection time and after the connection wait time. Because the connection wait time varies for each UE, the time at which the UE connects to the target base station also varies. This reduces the number of UEs connected to the target base station at the same time, thereby alleviating network congestion.

[0277] In this way, after the scheduled connection time, the target base station is connected based on the connection waiting time associated with each UE, thereby reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0278] Here, the indication information indicating the target base station, and / or the indication information indicating the reference connection waiting time, and / or the indication information indicating the scheduled connection time can be sent by the serving base station to the UE. The serving base station can send the indication information indicating the target base station, and / or the indication information indicating the reference connection waiting time, and / or the indication information indicating the scheduled connection time to the UE by broadcasting. For example, the serving base station can carry the indication information indicating the target base station, and / or the indication information indicating the reference connection waiting time, and / or the indication information indicating the scheduled connection time in the system information for broadcast.

[0279] Here, the indication information indicating the target base station may be a base station identifier of the target base station, etc.

[0280] The UE determines the target base station, the scheduled connection time Te and / or the reference connection waiting time T0, etc. by receiving the indication information sent by the serving base station.

[0281] In one embodiment, Figure 7 As shown, the method further includes:

[0282] Step 602: Send indication information indicating a correspondence between a service characteristic parameter and a connection wait time scaling factor range to the UE, wherein the correspondence is used for the UE to determine the connection wait time scaling factor.

[0283] Here, the correspondence between the service characteristic parameters and the connection wait time scaling factor range can be sent by the serving base station to the UE. The serving base station can broadcast the correspondence to the UE. For example, the serving base station can include indication information indicating the correspondence in system information broadcast. After receiving the system information, the UE determines the correspondence.

[0284] The UE may randomly select a value from the determined connection wait time scaling factor range as its own connection wait time scaling factor.

[0285] Exemplarily, the UE may generate a random number rand within the connection wait time scaling factor range, where the random number may be uniformly distributed within the connection wait time scaling factor range, and determine the connection wait time based on the randomly generated connection wait time scaling factor and the reference connection wait time.

[0286] In this way, by randomly selecting values ​​within the connection wait time scaling factor range, the number of identical values ​​is reduced, thereby reducing the number of identical connection wait time values. UEs connect to the target base station based on different connection wait times, reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0287] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0288] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0289] Because service characteristic parameters can take on a large number of values, a correspondence between service characteristic parameter ranges and connection wait time scaling factor ranges can be established. The service characteristic parameter values ​​can be divided into multiple different ranges, with each service characteristic parameter range corresponding to a connection wait time scaling factor range. The connection wait time scaling factor ranges corresponding to different service characteristic parameter ranges can be the same or different.

[0290] The UE may determine the connection wait time scaling factor based on a correspondence between a service characteristic parameter range and a connection wait time scaling factor range.

[0291] Exemplarily, the service characteristic parameter can be the packet delay budget (PDB). All PDBs can be divided into N ranges, where N is a positive integer greater than or equal to 1. Each PDB range corresponds to a range of connection waiting duration scaling factors. The UE can select the PDB range corresponding to its own PDB, and then determine the corresponding range of connection waiting duration scaling factors.

[0292] For example, the PDB sequence is PDBreference = {PDBreference_1,..., PDUeference_n,..., PDBreference_N}, where 0 < PDBreference_1 <,..., < PDBreference_n <,..., < PDBreference_N. And obtain the connection waiting duration scaling factor corresponding to each PDB. Denote the sequence composed of connection waiting duration scaling factors as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1.

[0293] The UE obtains the PDB corresponding to the QoS (flow) Flow according to the 5QI of the ongoing service.

[0294] If 0 ≤ PDB ≤ PDBreference_1, the UE can determine the connection waiting duration scaling factor within the range [0, P_1] of the connection waiting duration scaling factor. If PDBminreference_n - 1 < PDBmin ≤ PDBminreference_n, the UE can determine the connection waiting duration scaling factor within the range (P_n - 1, P_n] of the connection waiting duration scaling factor.

[0295] If PDBmin > PDUminreference_N, the UE can determine the connection waiting duration scaling factor within the range (P_n, 1] of the connection waiting duration scaling factor.

[0296] In one embodiment, the method further includes:

[0297] Sending indication information for instructing the UE to perform a handover or indication information for performing a reconstruction to the UE.

[0298] Here, the connection target base station can include switching to the target base station or initiating a reconstruction to the target base station.

[0299] The serving base station can send indication information to the UE to indicate whether the UE should switch to the target cell or perform a reconstruction with the target cell. The serving base station can send the indication information in a broadcast manner.

[0300] Exemplarily, the serving base station broadcasts instructions to the UE to connect to the target base station via handover. The UE uses the identifier of the target base station of the serving base station to find the corresponding configuration in the CHO and subsequently trigger the handover. If the corresponding configuration is not found in the CHO, a reestablishment can be triggered.

[0301] If the serving base station instructs the UE to connect to the target base station in a reestablishment manner by broadcasting, when the UE adopts the reestablishment, the UE initiates the reestablishment to the target base station according to the identifier of the target base station broadcasted by the network.

[0302] In one embodiment, the method further comprises:

[0303] Sending indication information indicating the time interval for triggering connection.

[0304] If a UE is idle or inactive at the scheduled connection time, a trigger connection interval can be set. This trigger connection interval occurs after the scheduled connection time. This trigger connection interval can be a period of time during which UEs frequently switch from a serving base station to a target base station. If a UE that is idle or inactive within the trigger connection interval triggers a connection to a base station, and if a connection establishment request message needs to be sent, the UE can wait for the connection wait time after triggering the connection to the base station before connecting to the target base station. That is, when it is determined that a connection establishment request message needs to be sent, the connection establishment request message can be sent after the connection wait time has elapsed.

[0305] Here, the serving base station may send indication information indicating the time interval for triggering connection to the UE by broadcasting or other means.

[0306] Exemplarily, an idle UE obtains a connection triggering time interval Tx through network broadcast, where Tx may be less than or equal to a reference connection waiting time T0. When the predetermined connection time Te is reached, Tx is started. If the idle UE initiates transmission of a connection establishment request message before Tx times out, the connection waiting time T is started. When T times out, the UE sends a connection establishment request message to connect to the target base station.

[0307] In this way, UEs in an idle or inactive state connect to a target base station based on different connection waiting times, thereby reducing the number of UEs connected to the target base station at the same time and alleviating network congestion.

[0308] The following provides a specific example in combination with any of the above embodiments:

[0309] The complete content of the technical solution provided by the example of the present invention includes:

[0310] 1. The UE obtains the target gNB indication information through system broadcast, such as the target gNB identifier, scheduled connection time Te, and reference connection waiting time, such as the maximum waiting time T0.

[0311] 2. The network configures the correspondence between the connection waiting time scaling factor and the service characteristic parameters. The UE selects the corresponding connection waiting time scaling factor according to its own service characteristic parameters. The service characteristic parameters can be indicated by AccessIdentity, Access Category, 5QI, QoS characteristic parameters, etc.

[0312] 3. If the network does not broadcast the correspondence between the connection wait time scaling factor and the service characteristic parameters, the UE generates a random number between 0 and 1 as the connection wait time scaling factor.

[0313] 4. The UE scales T0 to obtain the connection waiting timer T. The connection waiting time scaling coefficient is determined by 2 and 3.

[0314] 5. The network can instruct the connected UE to reestablish or switch through broadcast.

[0315] 6. When the UE uses handover, it uses the gNB ID broadcast by the network to find the corresponding configuration in the CHO and subsequently trigger the handover. If the corresponding configuration is not found in the CHO, it subsequently triggers re-establishment.

[0316] 7. When the UE uses reestablishment, the UE initiates reestablishment to the target gNB based on the gNB identifier broadcast by the network.

[0317] 8. When the Te moment is reached, T is started. When T times out, the switching or reconstruction process is triggered.

[0318] 9. Based on 8, the UE can synchronize with the target cell when the Te time arrives.

[0319] 10. The idle UE obtains the timer duration Tx through network broadcast.

[0320] 11. When the Te moment is reached, the idle UE starts Tx. If the transmission of the connection establishment request message is started before Tx times out, T is started. When T times out, the UE sends a connection establishment request message.

[0321] Example 1:

[0322] 1. The UE obtains the target gNB indication information through system broadcast, such as the target gNB identifier, scheduled connection time Te, and reference connection waiting time, such as the maximum waiting time T0.

[0323] 2. The UE obtains the correspondence between the connection waiting duration scaling factor and the service characteristic parameter PDB through system broadcast: Let the sequence of PDB be PDBminreference = {PDBminreference_1,..., PDUminreference_n,..., PDBminreference_N}, where 0 < PDBminreference_1 <,..., < PDBminreference_n <,..., < PDBminreference_N. And obtain the connection waiting duration scaling factor corresponding to each PDB, and denote the sequence composed of the connection waiting duration scaling factors as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1.

[0324] 3. The UE obtains the 5QI of all uplink and downlink QoS flows (Flows) of the ongoing service and obtains the corresponding PDB, and calculates the minimum value PDBmin among the PDBs corresponding to all QoS Flows. ​​​​​​​​​​​​​​​​​​​​​​​

[0333] 6.2. The UE synchronizes with the target cell and starts T. When T times out, it initiates random access, RRC reconfiguration and other handover procedures.

[0334] Example 2:

[0335] 1. The UE obtains the target gNB indication information through system broadcast, such as the target gNB identifier, scheduled connection time Te, and reference connection waiting time, such as the maximum waiting time T0.

[0336] 2. The UE obtains the correspondence between the connection waiting time scaling factor and the service feature parameter Access Identity through system broadcast. When Access Identity = 1, the connection waiting time scaling factor ∈ [Pl_1, Pu_1], where 0≤Pl_1≤Pu_1≤1; when Access Identity = 2, the connection waiting time scaling factor ∈ [Pl_2, Pu_2], where 0≤Pl_2≤Pu_2≤1; when Access Identity = 11, 12, ..., etc., the settings are the same as above.

[0337] 3. If there are two Access Identities in the UE, namely 1 and 2. Pl_1>Pl_2 and Pu_1>Pu_2, then Pl_new=Pl_2, Pu_new=Pu_2, that is, the connection waiting time scaling factor corresponding to this UE is in the range of [Pl_2, Pu_2].

[0338] 4. The UE generates a random number rand, which is uniformly distributed between [Pl_2, Pu_2]. The T duration corresponding to this UE is: rand*T0.

[0339] 5. The network instructs the connected UE to use handover according to the broadcast. The UE then finds the corresponding configuration in CHO based on the gNB identifier broadcast by the network and subsequently triggers the handover.

[0340] 6. When the Te moment is reached,

[0341] 6.1. Start T. When T times out, the UE is triggered to synchronize with the target cell and initiate handover procedures such as random access and RRC reconfiguration.

[0342] or,

[0343] 6.2. The UE synchronizes with the target cell and starts T. When T times out, it initiates random access, RRC reconfiguration and other handover procedures.

[0344] The embodiment of the present invention also provides a connection establishment device, which is applied to a UE, such as Figure 8As shown, the connection establishment device 1000 includes: a first determination module 1010 and a first connection module 1020, wherein:

[0345] The first determining module 1010 is configured to determine a connection waiting time for the UE to connect to a target base station based on a reference connection waiting time and a connection waiting time scaling factor associated with the UE;

[0346] The first connection module 1020 is configured to connect to the target base station based on the connection waiting time after the scheduled connection time.

[0347] In one embodiment, the apparatus 1000 further includes:

[0348] The second determining module 1030 is configured to determine the connection waiting time scaling factor corresponding to the service characteristic parameter associated with the UE according to the correspondence between the service characteristic parameter and the connection waiting time scaling factor range.

[0349] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0350] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0351] In one embodiment, the second determining module 1030 includes:

[0352] The first determining submodule 1031 is configured to determine the connection waiting time scaling factor from the connection waiting time scaling factor range corresponding to the service characteristic parameter range to which the service characteristic parameter associated with the UE belongs.

[0353] In one embodiment, the second determining module 1030 includes:

[0354] The second determining submodule 1032 is configured to randomly select the connection waiting time scaling factor from the connection waiting time scaling factor range corresponding to the service characteristic parameter associated with the UE.

[0355] In one embodiment, the service characteristic parameters include: Access Identity, and / or Access Category, and / or fifth generation service quality indicator 5QI parameters, and / or quality of service QoS characteristic parameters.

[0356] In one embodiment, the apparatus 1000 further includes at least one of the following:

[0357] The first receiving module 1040 is configured to receive indication information indicating the corresponding relationship sent by the serving base station;

[0358] The third determining module 1050 is configured to determine the corresponding relationship based on the agreement of the communication protocol.

[0359] In one embodiment, the second determining module 1030 includes:

[0360] The third determination submodule 1033 is configured to determine the connection waiting time scaling factor in response to at least two of the service characteristic parameters associated with the UE, within the range of the connection waiting time scaling factor with a smaller connection waiting time scaling factor in the at least two connection waiting time scaling factor ranges corresponding to the at least two service characteristic parameters associated with the UE.

[0361] In one embodiment, the first determining module 1010 includes:

[0362] The fourth determining submodule 1011 is configured to determine the product of the reference connection waiting time and the connection waiting time scaling factor as the connection waiting time of the UE.

[0363] In one embodiment, the apparatus 1000 further includes:

[0364] The selection module 1060 is configured to randomly select the connection waiting time scaling factor, wherein the connection waiting time scaling factor does not exceed a preset time scaling factor range.

[0365] In one embodiment, in response to the reference connection waiting time being the maximum value of the connection waiting time, the range of the connection waiting time scaling factor does not exceed 0 to 1.

[0366] In one embodiment, the apparatus 1000 further includes at least one of the following:

[0367] The second receiving module 1070 is configured to receive indication information indicating the target base station sent by the serving base station;

[0368] The third receiving module 1080 is configured to receive indication information sent by the serving base station indicating the reference connection waiting time;

[0369] The fourth receiving module 1090 is configured to receive indication information indicating the scheduled connection time sent by the serving base station.

[0370] In one embodiment, the first connection module 1020 includes at least one of the following:

[0371] The first connection submodule 1021 is configured to, in response to the UE being in a connected state, connect to the target base station after the predetermined connection time and after the connection waiting time;

[0372] The second connection submodule 1022 is configured to respond to the UE being in an idle state or an inactive state and triggering a connection within a trigger connection time interval after the predetermined connection moment, and connect to the target base station after the connection is triggered and the connection wait time interval.

[0373] In one embodiment, the apparatus 1000 further includes:

[0374] The synchronization module 1100 is configured to synchronize with the target base station at a predetermined connection time in response to the UE being in a connected state.

[0375] In one embodiment, the first connection submodule 1021 includes:

[0376] The connecting unit 10211 is configured to, in response to the UE being in a connected state, switch to the target base station or initiate reconstruction to the target base station after the predetermined connection time and at an interval of the connection waiting time.

[0377] In one embodiment, the apparatus 1000 further includes:

[0378] The fifth receiving module 1110 is configured to receive instruction information for handover or reestablishment sent by the serving base station;

[0379] The connecting unit 10211 includes:

[0380] The first connecting subunit 102111 is configured to, in response to receiving instruction information instructing handover, switch to the target base station;

[0381] The second connecting subunit 102112 is configured to initiate a reestablishment to the target base station in response to receiving the instruction information instructing the reestablishment.

[0382] In one embodiment, the apparatus 1000 further includes at least one of the following:

[0383] The sixth receiving module 1120 is configured to receive indication information indicating the connection triggering time interval sent by the serving base station;

[0384] The fourth determining module 1130 is configured to determine the connection triggering time interval based on the agreement of the communication protocol.

[0385] In one embodiment, the apparatus 1000 further includes:

[0386] The first connection module 1140 is configured to, in response to the UE being in an idle state or an inactive state and triggering a connection outside a connection triggering time interval after the predetermined connection moment, connect to the target base station after the connection is triggered.

[0387] The embodiment of the present invention also provides a connection establishment device, which is applied to a base station, such as Figure 9 As shown, the connection establishment device 200 includes: a first sending module 210, wherein:

[0388] The first sending module 210 is configured to send indication information indicating a target base station, and / or indication information indicating a reference connection waiting time, and / or indication information indicating a scheduled connection time to the user equipment UE;

[0389] The reference connection waiting time is used by the UE to determine the connection waiting time for connecting to the target base station after the scheduled connection time in combination with the connection waiting time scaling factor.

[0390] In one embodiment, the apparatus 200 further includes:

[0391] The second sending module 220 is configured to send indication information indicating a correspondence between a service characteristic parameter and a connection wait time scaling factor range to the UE, wherein the correspondence is used for the UE to determine the connection wait time scaling factor.

[0392] In one embodiment, the correspondence between the service characteristic parameter and the connection wait time scaling factor range includes:

[0393] The correspondence between the service characteristic parameter range and the connection waiting time scaling factor range.

[0394] In one embodiment, the apparatus 200 further includes:

[0395] The third sending module 230 is configured to send instruction information for instructing to perform handover or to perform reconstruction to the UE.

[0396] In one embodiment, the apparatus 200 further includes:

[0397] The fourth sending module 240 is configured to send indication information indicating a time interval for triggering a connection.

[0398] In an exemplary embodiment, the first determining module 1010, the first connecting module 1020, the second determining module 1030, the first receiving module 1040, the third determining module 1050, the selecting module 1060, the second receiving module 1070, the third receiving module 1080, the fourth receiving module 1090, the synchronization module 1100, the fifth receiving module 1110, the sixth receiving module 1120, the fourth determining module 1130, the first connecting module 1140, the first sending module 210, the second sending module 220, the third sending module 230, and the fourth sending module 240 may be implemented by one or more central processing units (CPUs), graphics processing units (GPUs), baseband processors (BPs), application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), or similar. Array), general processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components to perform the above method.

[0399] Figure 10 FIG3 is a block diagram of an apparatus 3000 for establishing a connection according to an exemplary embodiment. For example, the apparatus 3000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0400] Reference Figure 10 , the device 3000 may include one or more of the following components: a processing component 3002 , a memory 3004 , a power component 3006 , a multimedia component 3008 , an audio component 3010 , an input / output (I / O) interface 3012 , a sensor component 3014 , and a communication component 3016 .

[0401] The processing component 3002 generally controls the overall operation of the device 3000, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 3002 may include one or more modules to facilitate interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component 3008 and the processing component 3002.

[0402] The memory 3004 is configured to store various types of data to support operations on the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phone book data, messages, pictures, videos, etc. The memory 3004 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0403] The power supply component 3006 provides power to the various components of the device 3000. The power supply component 3006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 3000.

[0404] The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 3008 includes a front camera and / or a rear camera. When the device 3000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0405] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 includes a microphone (MIC) that is configured to receive external audio signals when the device 3000 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 also includes a speaker for outputting audio signals.

[0406] I / O interface 3012 provides an interface between processing component 3002 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0407] The sensor assembly 3014 includes one or more sensors for providing various aspects of the status assessment of the device 3000. For example, the sensor assembly 3014 can detect the open / closed state of the device 3000, the relative positioning of components, such as the display and keypad of the device 3000. The sensor assembly 3014 can also detect changes in the position of the device 3000 or a component of the device 3000, the presence or absence of user contact with the device 3000, the orientation or acceleration / deceleration of the device 3000, and changes in the temperature of the device 3000. The sensor assembly 3014 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 3014 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 3014 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0408] The communication component 3016 is configured to facilitate wired or wireless communication between the device 3000 and other devices. The device 3000 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 3016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3016 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0409] In an exemplary embodiment, the apparatus 3000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0410] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 3004 including instructions, which can be executed by the processor 3020 of the apparatus 3000 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0411] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed in the present invention. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0412] It should be understood that the embodiments of the present invention are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present invention is limited only by the appended claims.

Claims

1. A connection establishment method, wherein: Applied to user equipment UE, the method includes: Determining a connection waiting time for the UE to connect to the target base station based on a reference connection waiting time; After the scheduled connection time, the target base station is connected based on the connection waiting time.

2. The method according to claim 1, wherein The method further comprises at least one of the following: receiving indication information sent by the serving base station indicating the target base station; receiving indication information sent by the serving base station indicating a waiting time of the reference connection; Receive indication information sent by the serving base station indicating the scheduled connection time.

3. The method according to claim 1 or 2, wherein: The connecting to the target base station after the predetermined connection time based on the connection waiting time includes at least one of the following: In response to the UE being in a connected state, connecting to the target base station after the predetermined connection time and after the connection waiting time; In response to the UE being in an idle state or an inactive state and triggering a connection within a connection triggering time interval after the predetermined connection moment, the target base station is connected after the connection is triggered for an interval of the connection waiting time.

4. The method according to claim 3, wherein: The method further comprises: In response to the UE being in a connected state, synchronization is performed with the target base station at a predetermined connection time.

5. The method according to claim 3 or 4, wherein: In response to the UE being in a connected state, connecting to the target base station after the predetermined connection time and for a connection waiting time, includes: In response to the UE being in a connected state, switching to the target base station after the predetermined connection time and after the connection waiting time; or In response to the UE being in a connected state, reestablishment is initiated to the target base station after the predetermined connection moment and at an interval of the connection waiting time.

6. The method according to claim 5, wherein: The method further comprises: Receiving instruction information sent by the serving base station to instruct to perform handover; The switching to the target base station includes: In response to receiving the instruction information for instructing handover, handover is performed to the target base station.

7. The method according to claim 5, wherein: The method further comprises: Receiving instruction information sent by the serving base station to instruct the reestablishment; The initiating the reestablishment to the target base station includes: In response to receiving the instruction information instructing to perform the reconstruction, the reconstruction is initiated to the target base station.

8. The method according to claim 3, wherein: The method further comprises at least one of the following: Receiving indication information sent by the network side indicating the time interval for triggering the connection; The connection triggering time interval is determined based on the agreement of the communication protocol.

9. The method according to claim 1, wherein The method further comprises: In response to the UE being in an idle state or an inactive state and triggering a connection outside a connection triggering time interval after the predetermined connection moment, connecting to the target base station after the connection is triggered.

10. A connection establishment method, wherein: Applied to a base station, the method includes: Send at least one of the following to the user equipment UE: Indication information indicating the target base station; Indication information indicating the reference connection waiting time; Instruction information indicating a scheduled connection time; The reference connection waiting time is used by the UE to determine a connection waiting time for connecting to a target base station after a predetermined connection time.

11. The method according to claim 10, wherein: The method further comprises: Instruction information sent to the UE to instruct the UE to perform handover; or, Instruction information sent to the UE to instruct the user to reestablish the connection.

12. The method according to claim 10 or 11, wherein: The method further comprises: Sending indication information indicating the time interval for triggering connection.

13. A connection establishment device, wherein: Applied to user equipment UE, the apparatus includes: a first determining module and a first connecting module, wherein: The first determining module is configured to determine a connection waiting time for the UE to connect to a target base station based on a reference connection waiting time; The first connection module is configured to connect to the target base station based on the connection waiting time after a predetermined connection time.

14. The device according to claim 13, wherein The device further comprises at least one of the following: A second receiving module is configured to receive indication information indicating the target base station sent by the serving base station; A third receiving module is configured to receive indication information sent by the serving base station indicating the reference connection waiting time; The fourth receiving module is configured to receive indication information indicating the scheduled connection time sent by the serving base station.

15. The device according to any one of claims 13 to 14, wherein: The first connection module includes at least one of the following: A first connection submodule is configured to, in response to the UE being in a connected state, connect to the target base station after the predetermined connection time and after an interval of the connection waiting time; The second connection submodule is configured to respond to the UE being in an idle state or an inactive state and triggering a connection within a connection triggering time interval after the predetermined connection moment, and connect to the target base station after the connection is triggered and the connection wait time interval.

16. The device according to claim 15, wherein The device further comprises: A synchronization module is configured to synchronize with the target base station at a predetermined connection time in response to the UE being in a connected state.

17. The device according to claim 15, wherein The first connection submodule includes: The connecting unit is configured to, in response to the UE being in a connected state, switch to the target base station or initiate reconstruction to the target base station after the predetermined connection time and at an interval of the connection waiting time.

18. The device according to claim 17, wherein The device further comprises: a fifth receiving module, configured to receive instruction information sent by the serving base station to instruct handover; The connecting unit includes: The first connecting subunit is configured to switch to the target base station in response to receiving instruction information instructing switching.

19. The device according to claim 17, wherein The device further comprises: a fifth receiving module, configured to receive instruction information sent by the serving base station to instruct the reconstruction; The connecting unit includes: The second connecting subunit is configured to initiate a reestablishment to the target base station in response to receiving instruction information instructing the reestablishment.

20. The apparatus according to claim 15, wherein The device further comprises at least one of the following: a sixth receiving module, configured to receive indication information indicating the time interval for triggering the connection sent by the network side; The fourth determining module is configured to determine the connection triggering time interval based on the agreement of the communication protocol.

21. The apparatus according to claim 13, wherein The first connection module is further configured to, in response to the UE being in an idle state or an inactive state and triggering a connection outside a connection triggering time interval after the predetermined connection moment, connect to the target base station after the connection is triggered.

22. A connection establishment device, wherein: Applied to a base station, the device includes: a first sending module, wherein: The first sending module is configured to perform at least one of the following: Sending indication information indicating a target base station to a user equipment UE; Indication information indicating the reference connection waiting time; Instruction information indicating a scheduled connection time; The reference connection waiting time is used for the UE to determine a connection waiting time for connecting to a target base station after a predetermined connection time.

23. The device according to claim 22, wherein The device further comprises: The third sending module is configured to send indication information indicating switching or reconstruction to the UE.

24. The device according to claim 22 or 23, wherein The device further comprises: The fourth sending module is configured to send indication information indicating a time interval for triggering a connection.

25. A communication device comprising a processor, a memory, and an executable program stored in the memory and capable of being run by the processor, wherein: When the processor runs the executable program, it executes the connection establishment method according to any one of claims 1 to 9 or 10 to 12.

26. A storage medium storing computer-executable instructions, wherein the computer-executable instructions, after being executed by a processor, can implement the connection establishment method according to any one of claims 1 to 9 or 10 to 12.

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