Connection establishment method, device, communication device and storage medium

Abstract

Embodiments of the present disclosure relate to a connection establishment method, an apparatus, a communication device, and a storage medium, in which a user equipment (UE) determines a connection wait time length until the UE connects to a target base station based on a reference connection wait time length and a connection wait time length scaling factor associated with the UE, and connects to the target base station based on the connection wait time length after a predetermined connection time.

Description

[Technical field]

[0001] 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, an apparatus, a communication device and a storage medium. [Background technology]

[0002] Fifth Generation (5G, 5 th Non-Terrestrial Networks (NTN) have been introduced in the Next Generation cellular mobile communication system. In the NTN system, a feeder link switch occurs as an airborne platform such as a satellite moves. Here, the radio link between an airborne platform such as a Tenki mobile base station and a control network node such as a satellite gateway or a core network serving earth station is called a feeder link. A satellite establishes feeder links with different control network nodes while moving. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, the embodiments of the present disclosure provide a connection establishment method, an apparatus, a communication device, and a storage medium. [Means for solving the problem]

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a connection establishment method applied to a User Equipment (UE), the method comprising: The UE is a target base station or target cell determining a connection wait time length before connecting to the After a predetermined connection time, the target base station or target cell and connecting the In one embodiment, the step of determining a connection waiting time length comprises: Determining the connection wait time length based on a reference connection wait time length and a connection wait time length scaling factor associated with the UE, the connection wait time length scaling factor comprising 1. In one embodiment, the method comprises: receiving indication information indicating the reference connection waiting time length transmitted from a serving base station; receiving instruction information transmitted from the serving base station and indicating the predetermined connection time. In one embodiment, the connection wait time length is equal to the reference connection wait time length. In one embodiment, the method further comprises: The method includes receiving indication information indicating the target base station or target cell, the indication information being transmitted from the serving base station. In one embodiment, the method further comprises: The method includes a step of stopping connection to the target base station or target cell in response to a failure to connect to the target base station or target cell during the connection standby time length after a predetermined connection time.

[0005] In one embodiment, the method further comprises: The method includes determining a scaling coefficient for a connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between a service characteristic parameter and a range of a scaling coefficient for a connection waiting time length.

[0006] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0007] In one embodiment, the step of determining a scaling factor of the connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between the service characteristic parameter and a range of a scaling factor of the connection waiting time length includes: The method includes determining a scaling factor for the connection wait time length from a range of scaling factors for the connection wait time length that corresponds to a range of the service characteristic parameters to which the service characteristic parameters associated with the UE belong.

[0008] In one embodiment, the step of determining a scaling factor of the connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between the service characteristic parameter and a range of a scaling factor of the connection waiting time length includes: The method includes randomly selecting a connection wait time scaling factor from a range of connection wait time scaling factors corresponding to the service characteristic parameter associated with the UE.

[0009] In one embodiment, the service characteristic parameters include at least one of an Access Identity, an Access Category, a 5th Generation Quality of Service Identity (5QI, 5G QoS Identity) parameter, and a Quality of Service (QoS, Quality of Service) characteristic parameter.

[0010] In one embodiment, the method further comprises: receiving indication information indicating the correspondence relationship transmitted from a serving base station; and determining the correspondence relationship based on a communication protocol agreement.

[0011] In one embodiment, the step of determining a scaling factor of the connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between the service characteristic parameter and a range of a scaling factor of the connection waiting time length includes: The method includes determining, in response to at least two of the service characteristic parameters associated with the UE, a connection wait time length scaling factor from a range of connection wait time length scaling factors having a smaller connection wait time length scaling factor among at least two ranges of the connection wait time length scaling factors corresponding respectively to the at least two service characteristic parameters associated with the UE.

[0012] In one embodiment, the step of determining a connection waiting time length for the UE to connect to a target base station based on the reference connection waiting time length and a connection waiting time length scaling factor associated with the UE includes: The method includes determining a product of the reference connection waiting time length and a scaling factor of the connection waiting time length as the connection waiting time length of the UE.

[0013] In one embodiment, the method includes randomly selecting the connection wait time length scaling factor, where the connection wait time length scaling factor is not outside a range of preset time length scaling factors.

[0014] In one embodiment, the range of the scaling factor for the connection wait time length does not exceed 0 to 1, in response to the reference connection wait time length being a maximum value of the connection wait time length.

[0015] In one embodiment, the method further comprises: receiving indication information indicating the target base station, the indication information being transmitted from a serving base station; receiving indication information indicating the reference connection waiting time length transmitted from the serving base station; receiving instruction information transmitted from the serving base station and indicating the predetermined connection time.

[0016] In one embodiment, the step of connecting to the target base station based on the connection waiting time length after the predetermined connection time includes: in response to the UE being in a connected state, connecting to the target base station after the connection standby time length has elapsed since the predetermined connection time; and in response to the UE being in an idle or inactive state and a connection being triggered within a connection trigger time interval after the predetermined connection time, connecting to the target base station after the connection wait time length has elapsed since the connection was triggered.

[0017] In one embodiment, the method includes, in response to the UE being in a connected state, synchronising with the target base station at a predefined connected time.

[0018] In one embodiment, the step of connecting to the target base station after the connection standby time length has elapsed from the predetermined connection time in response to the UE being in a connected state includes: The method includes, in response to the UE being in a connected state, switching to the target base station or initiating reestablishment to the target base station after the connection standby time length has elapsed from the predetermined connection time.

[0019] In one embodiment, the method further comprises: receiving an instruction information instructing a switch or an instruction information instructing a reconfiguration transmitted from a serving base station; The step of switching to the target base station or initiating a reconfiguration to the target base station includes: switching to the target base station in response to receiving instruction information instructing the switching; In response to receiving instruction information instructing reconfiguration, initiating reconfiguration to the target base station.

[0020] In one embodiment, the method further comprises: receiving indication information sent from a network side indicating the connection trigger time interval; and determining the connection trigger time interval based on a communication protocol agreement.

[0021] In one embodiment, the method includes connecting to the target base station after a connection is triggered in response to the UE being in an idle or inactive state and the connection being triggered outside a connection trigger time interval after the predetermined connection time.

[0022] According to a second aspect of an embodiment of the present disclosure, there is provided a connection establishment method applied to a base station, the method comprising: The method includes a step of transmitting at least one of instruction information indicating a target base station, instruction information indicating a reference connection waiting time length, and instruction information indicating a predetermined connection time to a user equipment (UE); Here, the reference connection waiting time length is used in combination with a scaling factor of the connection waiting time length for the UE to determine a connection waiting time length until the UE connects to the target base station after a predetermined connection time.

[0023] In one embodiment, the method further comprises: The method includes a step of transmitting instruction information to a UE indicating a correspondence relationship between a service characteristic parameter and a range of a scaling factor of a connection waiting time length, wherein the correspondence relationship is for the UE to determine the scaling factor of the connection waiting time length.

[0024] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0025] In one embodiment, the method further comprises: The method includes a step of sending, to the UE, indication information instructing switching or indication information instructing reconfiguration.

[0026] In one embodiment, the method further comprises: The method includes the step of transmitting indication information indicating a connection trigger time interval.

[0027] According to a third aspect of an embodiment of the present disclosure, there is provided a connection establishment device applied to a user equipment (UE), the device including: a first determination module and a first connection module, where: The first determination module is configured to determine a connection waiting time length for the UE to connect to a target base station based on a reference connection waiting time length and a connection waiting time length scaling factor associated with the UE; The first connection module is configured to connect to the target base station after a predetermined connection time based on the connection waiting time length.

[0028] In one embodiment, the apparatus comprises: and a second determination module configured to determine a scaling coefficient of the connection wait time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between the service characteristic parameter and a range of a scaling coefficient of the connection wait time length.

[0029] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0030] In one embodiment, the second decision module comprises: and a first determination submodule configured to determine a scaling factor for the connection wait time length from a range of scaling factors for the connection wait time length corresponding to a range of the service characteristic parameter to which the service characteristic parameter associated with the UE belongs.

[0031] In one embodiment, the second decision module comprises: and a second determination sub-module configured to randomly select a connection wait time length scaling factor from a range of the connection wait time length scaling factors corresponding to the service characteristic parameter associated with the UE.

[0032] In one embodiment, the service characteristic parameters include at least one of an Access Identity, an Access Category, a 5th Generation Quality of Service Identifier (5QI) parameter, and a Quality of Service (QoS) characteristic parameter.

[0033] In one embodiment, the apparatus comprises: A first receiving module configured to receive indication information indicating the correspondence relationship transmitted from a serving base station; a third determination module configured to determine the correspondence based on a communication protocol agreement.

[0034] In one embodiment, the second decision module comprises: and a third determination sub-module configured to determine, in response to at least two of the service characteristic parameters associated with the UE, a connection wait time length scaling factor from a range of the connection wait time length scaling factors having a smaller connection wait time length scaling factor among at least two ranges of the connection wait time length scaling factors corresponding respectively to the at least two service characteristic parameters associated with the UE.

[0035] In one embodiment, the first determination module comprises: and a fourth determination sub-module configured to determine a product of the reference connection waiting time length and a scaling coefficient of the connection waiting time length as the connection waiting time length of the UE.

[0036] In one embodiment, the apparatus comprises: A selection module configured to randomly select the connection wait time length scaling factor, where the connection wait time length scaling factor is not outside a range of preset time length scaling factors.

[0037] In one embodiment, the range of the scaling factor for the connection wait time length does not exceed 0 to 1, in response to the reference connection wait time length being a maximum value of the connection wait time length.

[0038] In one embodiment, the apparatus comprises: A second receiving module configured to receive indication information indicating the target base station, the indication information being sent from a serving base station; a third receiving module configured to receive indication information indicating the reference connection waiting time length transmitted from the serving base station; a fourth receiving module configured to receive indication information sent from the serving base station, the indication information indicating the predetermined connection time.

[0039] In one embodiment, the first connection module comprises: a first connection submodule configured to, in response to the UE being in a connected state, connect to the target base station after the connection standby time length has elapsed from the predetermined connection time; and a second connection submodule configured to connect to the target base station after the connection wait time length has elapsed since the connection was triggered in response to the UE being in an idle state or an inactive state and a connection being triggered within a connection trigger time interval after the predetermined connection time.

[0040] In one embodiment, the apparatus comprises: and a synchronization module configured to synchronize with the target base station at a predetermined connection time in response to the UE being in a connected state.

[0041] In one embodiment, the first connectivity sub-module comprises: and a connection unit configured to, in response to the UE being in a connected state, switch to the target base station or initiate reestablishment to the target base station after the connection standby time length has elapsed from the predetermined connection time.

[0042] In one embodiment, the apparatus comprises: a fifth receiving module configured to receive instruction information instructing a switch or instruction information instructing a reconfiguration, the instruction information being sent from a serving base station; The connection unit includes: A first connection subunit configured to switch to the target base station in response to receiving instruction information instructing switching; and a second connection subunit configured to initiate reestablishment to the target base station in response to receiving instruction information instructing reestablishment.

[0043] In one embodiment, the apparatus comprises: A sixth receiving module configured to receive indication information sent from a network side, the indication information indicating the connection trigger time interval; a fourth determination module configured to determine the connection trigger time interval based on a communication protocol agreement.

[0044] In one embodiment, the apparatus comprises: and a first connection module configured to connect to the target base station after a connection is triggered in response to the UE being in an idle or inactive state and the connection being triggered outside a connection trigger time interval after the predetermined connection time.

[0045] According to a fourth aspect of an embodiment of the present disclosure, there is provided a connection establishment device applied to a base station, the device including: a first transmitting module, where: The first transmission module is configured to transmit at least one of instruction information indicating a target base station, instruction information indicating a reference connection waiting time length, and instruction information indicating a predetermined connection time to a user equipment (UE); Here, the reference connection waiting time length is used in combination with a scaling factor of the connection waiting time length for the UE to determine a connection waiting time length until the UE connects to the target base station after a predetermined connection time.

[0046] In one embodiment, the apparatus comprises: The second sending module is configured to send, to the UE, instruction information indicating a correspondence between a service characteristic parameter and a range of a scaling factor of a connection waiting time length, where the correspondence is for the UE to determine the scaling factor of the connection waiting time length.

[0047] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0048] In one embodiment, the apparatus comprises: The third sending module is configured to send, to the UE, instruction information instructing a switch or instruction information instructing a reconfiguration.

[0049] In one embodiment, the apparatus comprises: and a fourth sending module configured to send indication information indicating the connection trigger time interval.

[0050] According to a fifth aspect of an embodiment of the present disclosure, there is provided a communications device, comprising: a processor; a memory; and an executable program stored in the memory and executable by the processor, wherein when the processor executes the executable program, the first aspect is achieved. Like Execute the steps of the described connection establishment method.

[0051] According to a sixth aspect of an embodiment of the present disclosure, there is provided a communication device, comprising: a processor; a memory; and an executable program stored in the memory and executable by the processor, wherein when the processor executes the executable program: , No. 2. Carry out the steps of the connection establishment method according to the second aspect. Effect of the Invention

[0052] The embodiments of the present disclosure provide a connection establishment method, an apparatus, a communication device, and a storage medium. Based on a UE reference connection waiting time length and a scaling factor of the connection waiting time length associated with the UE, a connection waiting time length until the UE connects to a target base station is determined, and after a predetermined connection time, the UE connects to the target base station based on the connection waiting time length. In this way, by connecting to the target base station based on the connection waiting time length respectively associated with each UE after the predetermined connection time, the number of UEs connecting to the target base station at the same time is reduced, and network congestion is alleviated.

[0053] It should be noted that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to be limiting of the embodiments of the present disclosure. [Brief description of the drawings]

[0054] The drawings herein, which are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. [Figure 1] 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment; [Diagram 2] FIG. 2 is a schematic diagram of a feeder link switch according to an exemplary embodiment. [Diagram 3] FIG. 2 is a schematic diagram of a feeder link hard switch shown in accordance with an exemplary embodiment. [Figure 4] FIG. 2 is a schematic diagram of a feeder link soft switch according to an exemplary embodiment; [Diagram 5] 4 is a flowchart of a connection establishment method according to an exemplary embodiment; [Figure 6] 4 is a flowchart of another connection establishment method according to an exemplary embodiment; [Figure 7] 4 is a flowchart of a further connection establishment method illustrated by an exemplary embodiment; [Figure 8]FIG. 2 is a block diagram of a connection establishment device according to an exemplary embodiment; [Figure 9] FIG. 2 is a block diagram of another connection establishment device according to an exemplary embodiment; [Figure 10] FIG. 2 is a block diagram of an apparatus for connection establishment shown in accordance with an exemplary embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0055] Exemplary embodiments will now be described in detail, examples of which are illustrated in the drawings. Where the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise stated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0056] The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present disclosure. As used in this disclosure and the appended claims, the singular forms "a," "the," and "said" are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used herein, the term "and / or" refers to any and all possible combinations of one or more of the associated listed items.

[0057] It should be understood that, although the embodiments of the present disclosure may use terms such as first, second, and third to describe various pieces of information, these pieces of information should not be limited to these terms. These terms are merely used to distinguish between the same types of information. For example, the first piece of information may be referred to as the second piece of information, and similarly, the second piece of information may be referred to as the first piece of information, without departing from the scope of the present disclosure. Depending on the context, the word "if" as used herein may be interpreted as "when" or "in the case of" or "responsive to a determination."

[0058] 1, which is a schematic diagram of a wireless communication system provided by an embodiment of the present disclosure. As shown in FIG. 1, the wireless communication system is a cellular mobile communication technology-based communication system, and the wireless communication system may include several terminals 11 and several base stations 12.

[0059] Here, the terminal 11 may refer to a device that provides a voice and / or data connection to a user. The terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN), and may be an Internet of Things terminal, such as a sensor device, a mobile phone (also called a "cellular" phone), and a computer with an Internet of Things terminal, such as a fixed, portable, pocket, handheld, computer-embedded, or vehicle-mounted device. For example, the terminal 11 may be a station (STA), subscriber unit, subscriber station, mobile station, mobile, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Or, the terminal 11 may be an unmanned aerial vehicle device. Alternatively, the terminal 11 may be an in-vehicle device, such as a trip computer with wireless communication capabilities, or a wireless terminal connected to a trip computer, or the terminal 11 may be a roadside device, such as a street lamp, a traffic light, or other roadside device with wireless communication capabilities.

[0060] The base station 12 may be a network side device in a wireless communication system. Here, the wireless communication system may be the 4th generation mobile communication (4G) system, also called a Long Term Evolution (LTE) system. Or, the wireless communication system may be a 5G system, also called a new radio (NR) system or a 5GNR system. Or, the wireless communication system may be a system that is the next generation of the 5G system. Here, the access network in the 5G system may be called a New Generation-Radio Access Network (NG-RAN). Or, it is an MTC system.

[0061] Here, the base station 12 may be an evolved base station (eNB) adopted in a 4G system. Or, the base station 12 may 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 central 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 Control (RLC) layer, and a Media Access Control (MAC) layer. The distributed unit is provided with a protocol stack of a physical (PHY) layer, and the embodiment of the present disclosure does not limit the specific implementation form of the base station 12.

[0062] A wireless connection can be established between the base station 12 and the terminal 11 via a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on a fourth generation mobile communication network technology (4G) standard. Or, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new radio. Or, the wireless air interface may be a wireless air interface based on a standard of a 5G next generation mobile communication network technology.

[0063] In some embodiments, an E2E (End to End) connection can be established between the terminals 11. For example, this is the case in vehicle to everything (V2X) Internet communication for cars, such as V2V (vehicle to vehicle) communication, V2I (vehicle to infrastructure) communication, and V2P (vehicle to pedestrian) communication.

[0064] In some embodiments, the wireless communication system may further include a network management device 130 .

[0065] Each of the base stations 12 is connected to a network management device 13. Here, the network management device 13 may be a core network device in a wireless communication system, for example, the network management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC) network. Or, the network management device may be another core network device, for example, a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS), etc. The implementation form of the network management device 13 is not limited to the embodiment of the present disclosure.

[0066] The implementation bodies according to the embodiments of the present disclosure include, but are not limited to, satellites that provide coverage of non-terrestrial cellular mobile communication networks, user devices such as mobile phone terminals that perform wireless communication using cellular mobile communication network technologies, and base stations.

[0067] One application scenario of the embodiment of the present disclosure is a feeder link switch of a low-earth orbit (LEO) satellite, as shown in FIG. 2, in which a LEO satellite in transparent transmission switches from a feeder link established with a gateway (GW) 1 to a feeder link established with a GW2 during movement. Here, GW1 is connected to a base station 1, and GW2 is connected to a base station 2. That is, the LEO satellite switches from a base station 1 to a base station 2 during movement. If a satellite can only serve one feeder link at a time, when the LEO satellite is moving, the RRC connection of all UEs served by the base station 1 through the gateway GW1 needs to be disconnected, and after the base station 2 takes over through GW2, each UE can find a reference signal corresponding to the base station 2 and access a cell belonging to the base station 2.

[0068] There are two types of feeder link switches: hard switches and soft switches.

[0069] Feeder link hard switch, as shown in Figure 3, when a LEO satellite in transparent transmission performs a feeder link hard switch, i.e., when only one feeder link connection via this satellite is available during GW conversion, the signal of the cell served by the LEO satellite is not available in the time period from time T1 when the UE leaves the old GW to time T2 when the UE accesses the new GW. If the new and old GWs correspond to different base stations, the UE needs to access the serving cell provided by the LEO satellite again.

[0070] The feeder link soft switch is shown in Figure 4. softWhen performing a switch, i.e. during GW conversion, two feeder link connections via this satellite are available. During the GW conversion, for the signal of the cell served by the LEO satellite, both base station 1 and base station 2 are available in the period between time T1 when the UE leaves the old GW and time T2 when the UE accesses the new GW, and the UE can switch serving cells during the feeder link switch.

[0071] Two possible solutions are proposed for the feeder link switch to establish the connection between the UE and the base station.

[0072] Solution 1: Hard switching of feeder links based on precise time control. Since there is no overlap between the source and target cells of the base stations in the new and old GWs, the only way to control the switching is based on a precise time. In the feeder link hard switch as shown in Figure 3, the switching command needs to be sent to all UEs served by the LEO satellite before T1, so a conditional handover (CHO) method based on a time trigger can be used. The UE can start the switching process after T2, so the switching command needs to include the switching trigger time.

[0073] Solution 2: A hard switch program for reconstructed feeder links based on conditional Radio Resource Control (RRC).

[0074] Considering the large size of NTN's cells, sending handover (HO, Hand Over) commands to a large number of UEs in a short period of time may be an extremely difficult problem.

[0075] Some UEs may not be able to perform HO immediately, so they may detect radio link failure, and then the UE may initiate an RRC reestablishment program. Reestablishment of the RRC connection may take a long time, resulting in detection of radio link failure (RLF), cell selection and possible reestablishment failure, which may affect service continuity. Therefore, the network may provide assistance information, such as the ID of the target cell and / or the reestablishment condition. The assistance information may be sent to the UEs individually through a System Information Block (SIB), rather than through dedicated signaling, effectively reducing the signaling overhead caused by a large number of UEs.

[0076] For solution 1, considering that the target base station of all UEs in the serving cell of this LEO satellite is the same, the same target base station and trigger time can be broadcast to these UEs before time T1. In this way, the signaling overhead can be effectively reduced. However, this will cause a large number of UEs to perform switching at the same time, resulting in network congestion. Similarly, for solution 2, when a large number of UEs detect a radio link failure, initiating RRC reestablishment will also face network congestion.

[0077] As shown in FIG. 5 , the present exemplary embodiment provides a connection establishment method, which is applicable to a wireless communication user equipment (UE), comprising: determining a connection waiting time length for the UE to connect to a target base station based on a reference connection waiting time length and a connection waiting time length scaling factor associated with the UE; and a step 502 of connecting to the target base station after a predetermined connection time based on the connection waiting time length.

[0078] The UE may be a mobile phone terminal or the like that performs wireless communication using a cellular mobile communication network technology. The UE can establish a communication connection with a serving base station by transparent transmission of a feeder link between an airborne platform such as a satellite and a satellite ground station such as a gateway GW. Here, the airborne platform is shown in Table 1. [Table 1]

[0079] In Table 1, airborne platforms other than GEO satellites usually have feeder link switches while moving. The method of the embodiment of the present invention is applicable to, but not limited to, NTN communication systems where feeder link switches occur.

[0080] The following inventive embodiments will describe the method of the embodiment of the present invention using an NTN communication system with a LEO satellite platform, but this does not mean that the method of the embodiment of the present invention can be used only with an NTN communication system with a LEO satellite platform.

[0081] As shown in FIG. 2, a LEO satellite in transparent transmission switches from a feeder link established with a Gateway (GW) 1 to a feeder link established with a GW2 during movement, where GW1 is connected to a base station 1, and GW2 is connected to a base station 2. That is, the LEO satellite switches from a base station 1 to a base station 2 during movement. Here, the base station may be a gNB in ​​5G cellular mobile communication.

[0082] The target base station is a base station to which the UE switches from the current serving base station while the UE is moving on the LEO satellite. For example, as shown in FIG. 2, at time T1, gNB1 is connected to the UE via GW1 and the LEO satellite, and gNB1 is the serving base station of the UE. During the movement of the LEO satellite, that is, from time T1 to time T2, the base station to which the UE is connected switches from gNB1 to gNB2. gNB2 is the target base station.

[0083] The reference connection waiting time length may be a certain time length, which may be specified by a communication protocol or may be determined by a core network or a base station based on the number of UEs covered by the LEO satellite signals and / or the number of UEs that need to be connected to a target base station.

[0084] The connection standby time length scaling factor allows the UE to adjust the connection standby time length based on the reference connection standby time length. The connection standby time length scaling factor is associated with the UE, and different UEs can have different connection standby time length scaling factors. Here, the connection standby time length scaling factor may be associated with the type of the UE, or may be associated with the current service characteristics of the UE, etc.

[0085] According to the reference connection standby time length and the scaling factor of the connection standby time length associated with the UE, the connection standby time length of each UE can be obtained. Since the scaling factor of the connection standby time length is different, the connection standby time length of each UE is also different. Exemplarily, the product of the reference connection standby time length and the multiplication factor of the connection standby time length, or the quotient of the reference connection standby time length divided by the scaling factor of the connection standby time length can be determined as the connection standby time length, where, when the connection standby time length is determined by division, the scaling factor of the connection standby time length is not 0. Here, the scaling factor of the connection standby time length may be a non-negative number less than or equal to 1, or a positive number greater than 1.

[0086] The predetermined connection time may be a time when switching to the target base station instructed by the serving base station starts, or may be a time when the satellite establishes a connection with the target base station, etc. As shown in FIG. 2, the predetermined connection time may be time T2. The UE can connect to the target base station based on the predetermined connection time and the connection waiting time length. For example, the UE can connect to the target base station after the connection waiting time length after the predetermined connection time. Since the connection waiting time length of each UE is different, the time when the UE connects to the target base station is also different, and thus the number of UEs connecting to the target base station at the same time is reduced, and network congestion is alleviated.

[0087] In this way, by connecting to the target base station after a specified connection time based on the connection waiting time length associated with each UE, the number of UEs connecting to the target base station at the same time is reduced, thereby easing network congestion.

[0088] In one embodiment, the method further comprises: The method includes determining a scaling coefficient for a connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between a service characteristic parameter and a range of a scaling coefficient for a connection waiting time length.

[0089] Here, the service characteristic parameter may be a type parameter, a priority parameter, a rate parameter, and / or a transmission quality requirement parameter of data currently being transmitted by the UE, etc. For example, the service characteristic parameter may be a priority level in QoS. Different service characteristic parameters are associated with different ranges of scaling factors for connection standby time lengths.

[0090] The UE can determine a connection standby time length scaling factor from a range of connection standby time length scaling factors corresponding to its current service characteristic parameters. The UE can determine a connection standby time length scaling factor from the range of connection standby time length scaling factors based on a predetermined selection rule. For example, the predetermined selection rule can specify selecting a corresponding connection standby time length scaling factor from the range of connection standby time length scaling factors based on a signal strength of the UE.

[0091] For example, the UE obtains the correspondence between the scaling coefficient of the connection waiting time length and the service characteristic parameter Access Identity through system broadcast, and when Access Identity=1, the scaling coefficient of the connection waiting time length ∈[Pl_1,Pu_1], where 0≦Pl_1≦Pu_1≦1; when Access Identity=2, the scaling coefficient of the connection waiting time length ∈[Pl_2,Pu_2], where 0≦Pl_2≦Pu_2≦1; and when Access Identity=11, 12, ..., etc., the setting is similar.

[0092] If the Access Identity in the UE is 1, Connection wait time length scaling factor The range is [Pl_1,Pu_1].

[0093] The UE can determine the scaling factor of the connection waiting time length from the range of [Pl_1, Pu_1].

[0094] In this way, the UEs with different service characteristic parameters obtain different value ranges for the scaling coefficient of the connection standby time length, and the obtained scaling coefficients of the connection standby time length are different, and different connection standby time lengths can be determined. The UEs connect to the target base station based on different connection standby time lengths, and the number of UEs connecting to the target base station at the same time is reduced, thereby relieving network congestion.

[0095] In one embodiment, the correspondence between the service characteristic parameter and the range of the scaling factor of the connection waiting time length is It includes the correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length.

[0096] Since there are many possible values for the service characteristic parameter, the correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length can be established. The possible values of the service characteristic parameter can be divided into a plurality of different ranges, and each range of the service characteristic parameter corresponds to a range of the scaling factor of the connection waiting time length. The ranges of the scaling factors of the connection waiting time lengths corresponding to different ranges of the service characteristic parameter may be the same or different.

[0097] The UE can determine the scaling factor of the connection waiting time length based on the correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length.

[0098] Exemplarily, the service characteristic parameter may be the packet delay (PDB, Packet Delay Budget), and 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 scaling factor of the connection waiting time length. The UE can select the PDB range corresponding to its own PDB and further determine the corresponding range of the scaling factor of the connection waiting time length.

[0099] For example, the PDB sequence is PDBreference = {PDBreference_1,..., PDBeference_ n,..., PDBreference_N}, where 0 < PDBreference_1 <,..., < PDBreference_n <,..., < PDBreference_N. Obtain the scaling factor of the connection waiting time length corresponding to each PDB, and denote the sequence consisting of the scaling factors of the connection waiting time lengths as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1.

[0100] The UE determines the PDB corresponding to the QoS (flow) Flow based on the 5QI of the ongoing service.

[0101] When 0 ≤ PDB ≤ PDBreference_1, the UE can determine the scaling factor of the connection waiting time within the range [0, P_1] of the scaling factor of the connection waiting time. When PDBminreference_n-1 < PDBmin ≤ PDBminreference_n, the UE can determine the scaling factor of the connection waiting time within the range (P_n-1, P_n] of the scaling factor of the connection waiting time.

[0102] PDBmin > PDBminreference_ N, the UE can determine the scaling factor of the connection waiting time within the range (P_n, 1] of the scaling factor of the connection waiting time.

[0103] In one embodiment, based on the correspondence between the service characteristic parameter and the range of the scaling factor of the connection waiting time, the step of determining the scaling factor of the connection waiting time corresponding to the service characteristic parameter associated with the UE is: including the step of determining the scaling factor of the connection waiting time from the range of the scaling factor of the connection waiting time corresponding to the range of the service characteristic parameter to which the service characteristic parameter associated with the UE belongs.

[0104] Exemplarily, the service characteristic parameter may be PDB, and 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 scaling factor of the connection waiting time. The UE selects the PDB range to which its own PDB belongs, determines the range of the scaling factor of the connection waiting time corresponding to this PDB range, and can further determine the scaling factor of the connection waiting time from the range of the scaling factor of the connection waiting time.

[0105] In one embodiment, the step of determining a scaling factor of the connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between the service characteristic parameter and a range of a scaling factor of the connection waiting time length includes: The method includes randomly selecting a connection wait time scaling factor from a range of connection wait time scaling factors corresponding to the service characteristic parameter associated with the UE.

[0106] Here, the UE can randomly take a value as its own connection waiting time length scaling factor from the determined connection waiting time length scaling factor range.

[0107] For example, the UE may generate a random number rand within the range of the connection waiting time length scaling factor, and the random number may be evenly distributed within the range of the connection waiting time length scaling factor. Based on the randomly generated connection waiting time length scaling factor, the UE determines the connection waiting time length in combination with the reference connection waiting time length.

[0108] In this way, by randomly taking values ​​within the range of the scaling factor of the connection waiting time length, the number of situations where the values ​​are the same is reduced, and the number of situations where the connection waiting time length values ​​are the same is further reduced. UEs connect to target base stations based on different connection waiting time lengths, the number of UEs connecting to the target base station at the same time is reduced, and network congestion is alleviated.

[0109] In one embodiment, the service characteristic parameters include at least one of an Access Identity, an Access Category, a 5th Generation Quality of Service Identifier (5QI) parameter, and a Quality of Service (QoS) characteristic parameter.

[0110] 5G systems can restrict the right of a UE to access the network using related restriction parameters. These restriction parameters vary depending on Access Identity and Access Category. Access Identity is configured for the UE as shown in Table 2. Access Category is defined by a combination of UE related conditions and access attempt type as shown in Table 3. [Table 2] [Table 3-1] [Table 3-2]

[0111] In the 5G system, the QoS model is based on QoS flow, and the QoS flow is a Protocol Data Unit (PDU), and the finest QoS partition granularity of a PDU session, that is, the difference between two PDU sessions is that their QoS flows are different. In the 5G system, the QoS Flow Identifier (QFI) is for identifying the QoS flow, and the QFI may be dynamically set or equal to 5QI.

[0112] The standardized 5QI values ​​specify common services and can be mapped to 5G QoS features. The mapping from standardized 5QI values ​​to 5G QoS features is shown in Table 4. [Table 4-1] [Table 4-2] [Table 4-3] [Table 4-4] [Table 4-5] [Table 4-6]

[0113] In one embodiment, the method further comprises: receiving indication information indicating the correspondence relationship transmitted from a serving base station; and determining the correspondence relationship based on a communication protocol agreement.

[0114] Here, the correspondence between the service characteristic parameters and the range of the scaling coefficient of the connection waiting time length can be transmitted to the UE by the serving base station. The serving base station can transmit the correspondence to the UE by broadcasting. For example, the serving base station can include indication information indicating the correspondence in system information and broadcast it. The UE determines the correspondence after receiving the system information.

[0115] The correspondence relationship between the service characteristic parameter and the range of the scaling factor of the connection standby time length may be negotiated by a communication protocol, and the user equipment determines the correspondence relationship based on the communication protocol. The correspondence relationship between the service characteristic parameter and the range of the scaling factor of the connection standby time length may be negotiated by a serving base station and a UE, and the user equipment determines the scaling factor of the connection standby time length based on the negotiated correspondence relationship.

[0116] In one embodiment, the step of determining a scaling factor of the connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between the service characteristic parameter and a range of a scaling factor of the connection waiting time length includes: including the step of determining a scaling factor of the connection waiting time length from a range of scaling factors of the connection waiting time length having a smaller scaling factor of the connection waiting time length, among ranges of scaling factors of the connection waiting time length respectively corresponding to at least two of the service characteristic parameters associated with the UE, in response to at least two of the service characteristic parameters associated with the UE.

[0117] The UE can usually transmit data of multiple services simultaneously, and the service characteristic parameters of multiple services are different, or the service characteristic parameters of different data within one service are different. That is, the current service characteristic parameters of the UE may be multiple, and the multiple service characteristic parameters can respectively correspond to a range of scaling factors of one connection waiting time length.

[0118] Here, the UE can be determined from a range of scaling factors of the connection waiting time length having a smaller scaling factor of the connection waiting time length.

[0119] Exemplarily, the UE obtains the correspondence between the range of service characteristic parameters and the range of scaling factors of the connection waiting time length by system broadcast, where the service characteristic parameter may be PDB. Set the sequence of PDB reference values as PDBminreference={PDBminreference_1,..., PDBminreference_ n,..., PDBminreference_N}, where 0 < PDBminreference_1 <,..., < PDBminreference_n <,..., < PDBminreference_N. Obtain the scaling factor of the reception waiting time length corresponding to each PDB, and record the sequence consisting of the scaling factors of the connection waiting time length as P={P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1.

[0120] The UE obtains the corresponding PDB based on the 5QI of all uplink and downlink QoS Flows of the ongoing service, and determines the minimum value PDBmin among the PDBs corresponding to all QoS Flows. The range of the scaling factor of the connection waiting time length corresponding to PDBmin has a smaller scaling factor of the connection waiting time length. The UE can select the connection waiting time length within the range of the scaling factor of the connection waiting time length corresponding to PDBmin.

[0121] When 0 ≤ PDBmin ≤ PDBminreference_1, the UE can take a value as the connection waiting time length from [0, P_1]. Scaling factor for

[0122] When PDBminreference_n - 1 < PDBmin ≤ PDBminreference_n, the UE can take a value as the connection waiting time length from (P_n - 1, P_n]. Scaling factor for

[0123] When PDBmin > PDBminreference_ N, the UE can take a value as the connection waiting time length from (P_n, 1]. Scaling factor for

[0124] Also, for example, the UE obtains the correspondence between the range of service characteristic parameters and the range of the scaling factor of the connection waiting time length through system broadcast, where the service characteristic parameter may be the Access Identity. When Access Identity = 1, the scaling factor of the connection waiting time length ∈ [Pl_1, Pu_1], where 0 ≤ Pl_1 ≤ Pu_1 ≤ 1. When Access Identity = 2, the scaling factor of the connection waiting time length ∈ [Pl_2, Pu_2], where 0 ≤ Pl_2 ≤ Pu_2 ≤ 1. When Access Identity = 11, 12,..., etc., the settings are similar.

[0125] ​​​If a UE has two Access Identities, 1 and 2, and if Pl_1>Pl_2 and Pu_1>Pu_2, then Pl_new=Pl_2 and Pu_new=Pu_2, that is, the range of the scaling coefficient of the connection waiting time length corresponding to this UE is [Pl_2, Pu_2].

[0126] The UE receives the connection waiting time from [Pl_2, Pu_2]. Scaling factor for It can take the value as

[0127] In one embodiment, the step of determining a connection waiting time length for the UE to connect to a target base station based on the reference connection waiting time length and a connection waiting time length scaling factor associated with the UE includes: The method includes determining a product of the reference connection waiting time length and a scaling factor of the connection waiting time length as the connection waiting time length of the UE.

[0128] After the UE determines the connection waiting time length scaling factor, it can multiply a reference connection waiting time length by the connection waiting time length scaling factor, and determine the product of the multiplication as the connection waiting time length.

[0129] For example, after the UE determines the range of the connection waiting time length scaling factor, the UE generates a random number rand within the range of the connection waiting time length scaling factor, and the random number may be evenly distributed within the range of the waiting time length scaling factor. The connection waiting time length corresponding to the UE is rand*T0, where T0 is the reference connection waiting time length.

[0130] In one embodiment, the method includes randomly selecting the connection wait time length scaling factor, where the connection wait time length scaling factor is not outside a range of preset time length scaling factors.

[0131] If the base station does not broadcast the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length, the UE can set a random number obtained within the range of the scaling factor of the preset time length as the scaling factor of the waiting time length.

[0132] Here, the range of the scaling coefficient of the preset time length can be preset, and the range of the scaling coefficient of the preset time length and the range of the scaling coefficient of the connection waiting time length may be the same or different.

[0133] In one embodiment, the range of the scaling factor for the connection wait time length does not exceed 0 to 1, in response to the reference connection wait time length being a maximum value of the connection wait time length.

[0134] Here, the reference connection waiting time length may be the maximum value of the connection waiting time length, and for this reference connection waiting time length, the range of the scaling coefficient of the connection waiting time length is [0, 1].

[0135] In one embodiment, the method further comprises: receiving indication information indicating the target base station, the indication information being transmitted from a serving base station; receiving indication information indicating the reference connection waiting time length transmitted from the serving base station; receiving instruction information transmitted from the serving base station and indicating the predetermined connection time.

[0136] Here, the instruction information indicating the target base station, and / or the instruction information indicating the reference connection waiting time length, and / or the instruction information indicating the predetermined connection time can be transmitted to the UE by the serving base station. The serving base station can transmit the instruction information indicating the target base station, and / or the instruction information indicating the reference connection waiting time length, and / or the instruction information indicating the predetermined connection time to the UE by broadcasting. For example, the serving base station can broadcast the instruction information indicating the target base station, and / or the instruction information indicating the reference connection waiting time length, and / or the instruction information indicating the predetermined connection time, by including it in system information.

[0137] Here, the instruction information for indicating the target base station may be a base station identifier of the target base station, or the like.

[0138] The UE determines the target base station, a predetermined connection time Te and / or a reference connection waiting time length T0, etc. by receiving the indication information transmitted from the serving base station.

[0139] In one embodiment, the step of connecting to the target base station based on the connection waiting time length after the predetermined connection time includes: in response to the UE being in a connected state, connecting to the target base station after the connection standby time length has elapsed since the predetermined connection time; and in response to the UE being in an idle or inactive state and a connection being triggered within a connection trigger time interval after the predetermined connection time, connecting to the target base station after the connection wait time length has elapsed since the connection was triggered.

[0140] The serving base station may instruct the UE to use the time-based CHO mode. The serving base station may transmit instruction information to instruct a target base station, a predetermined connection time Te, and / or a reference connection waiting time length T0, etc. The UE in a connected state receives the instruction information transmitted from the serving base station to determine a target base station, a predetermined connection time Te, and / or a reference connection waiting time length T0, etc. The predetermined connection time Te may be a trigger time of CHO. The UE may determine a connection waiting time length based on the reference connection waiting time length, and connect to the target base station after waiting for the connection waiting time length after the predetermined connection time.

[0141] In this way, the UEs in a connected state connect to the target base station based on different connection waiting time lengths, and the number of UEs connecting to the target base station at the same time is reduced, thereby easing network congestion.

[0142] When the UE is in an idle state or an inactive state at a predetermined connection time, a connection trigger time interval is set, the connection trigger time interval is located after the predetermined connection time, and the connection trigger time interval may be a more frequent time step in which each UE switches from a serving base station to a target base station. When a UE in an idle state or an inactive state needs to trigger a connection to a base station within the connection trigger time interval and send a connection establishment request message, the UE can connect to the target base station after a connection waiting time length has elapsed since triggering a connection to the base station. That is, when it is determined that a connection establishment request message needs to be sent, the connection establishment request message may be sent after a connection waiting time length has elapsed.

[0143] In one embodiment, the method further comprises: receiving indication information sent from a network side indicating the connection trigger time interval; and determining the connection trigger time interval based on a communication protocol agreement.

[0144] Here, the base station may transmit, to the UE, indication information indicating the connection trigger time interval by broadcasting, etc. Here, the base station may be a serving base station in the case of a connected state of the UE in an idle state or an inactive state, or may be an anchor base station of the UE in an idle state or an inactive state.

[0145] Exemplarily, a UE in an idle state obtains a connection trigger time interval Tx through a network broadcast, where Tx may be less than or equal to a reference connection waiting time length T0, and when a predetermined connection time Te is reached, starts Tx, and when the UE in an idle state starts transmitting a connection establishment request message before Tx times out, starts a connection waiting time length T, and when T times out, the UE sends a connection establishment request message to connect to a target base station.

[0146] The connection trigger time interval may be negotiated by a communication protocol. The UE may determine the connection trigger time interval based on the communication protocol.

[0147] The connection trigger time interval may be negotiated by the base station and the UE, and the UE may Based on the results Connection Trigger Time Interval Distance Make a decision.

[0148] In this way, UEs in an idle or inactive state connect to a target base station based on different connection waiting time lengths, reducing the number of UEs connecting to a target base station at the same time, and alleviating network congestion.

[0149] In one embodiment, the method includes connecting to the target base station after a connection is triggered in response to the UE being in an idle or inactive state and the connection being triggered outside a connection trigger time interval after the predetermined connection time.

[0150] The connection trigger time interval may be a more frequent time step in which each UE switches from the serving base station to the target base station, and after the connection trigger time interval, fewer UEs switch from the serving base station to the target base station, and the network is less likely to become congested. Therefore, when a UE in an idle or inactive state triggers a connection to a base station after the connection trigger time interval, it can directly establish a connection with the target base station. In this way, the waiting time can be reduced and the connection immediacy of the target base station can be improved.

[0151] In one embodiment, the method includes, in response to the UE being in a connected state, synchronising with the target base station at a predefined connected time.

[0152] When the UE establishes a connection with the target base station, for example in a random access procedure, the UE needs to complete synchronization with the target base station. The UE can synchronize with the target base station at a predetermined connection time, thus improving the efficiency of establishing an RRC connection during a connection standby time.

[0153] Exemplarily, when a predetermined connection time is reached, the UE can start a timer for timing a connection waiting time length T to synchronize the UE with the cell of the target base station. When T times out, it initiates a switching process such as random access, RRC reconfiguration, etc.

[0154] Alternatively, when a predetermined connection time is reached, the UE can start a timer to count the connection waiting time length T, and when T times out, trigger cell synchronization between the UE and the target base station to initiate a switching process such as random access, RRC reconfiguration, etc.

[0155] In one embodiment, the step of connecting to the target base station after the connection standby time length has elapsed from the predetermined connection time in response to the UE being in a connected state includes: The method includes, in response to the UE being in a connected state, switching to the target base station or initiating reestablishment to the target base station after the connection standby time length has elapsed from the predetermined connection time.

[0156] Here, connecting to the target base station may include switching to the target base station or initiating a reconfiguration to the target base station.

[0157] In one embodiment, the method includes receiving a switching instruction or a reconfiguration instruction transmitted from a serving base station; The step of switching to the target base station or initiating a reconfiguration to the target base station includes: switching to the target base station in response to receiving instruction information instructing the switching; In response to receiving instruction information instructing reconfiguration, initiating reconfiguration to the target base station.

[0158] The serving base station may send indication information to the UE to instruct the UE to switch to or reestablish with the target cell. The serving base station may send the indication information by broadcasting.

[0159] For example, the serving base station instructs the UE to connect to the target base station in a switching manner by broadcasting. The UE finds the corresponding setting in the CHO according to the identifier of the target base station of the serving base station, and then triggers switching. If the corresponding setting in the CHO is not found, the UE may trigger reconfiguration.

[0160] When the serving base station broadcasts an instruction to the UE to connect to the target base station in a reconfiguration manner, if the UE adopts the reconfiguration, the UE initiates reconfiguration to the target base station based on the identifier of the target base station broadcasted by the network.

[0161] As shown in FIG. 6 , the present exemplary embodiment provides a connection establishment method, which is applicable to a base station of wireless communication, and includes step 601: Step 601: Send at least one of instruction information indicating a target base station, instruction information indicating a reference connection waiting time length, and instruction information indicating a predetermined connection time to a UE; Here, the reference connection waiting time length is used in combination with a scaling factor of the connection waiting time length for the UE to determine a connection waiting time length until the UE connects to the target base station after a predetermined connection time.

[0162] The UE may be a mobile phone terminal or the like that performs wireless communication using a cellular mobile communication network technology. The UE can establish a communication connection with a serving base station by transparent transmission of a feeder link between an airborne platform such as a satellite and a satellite ground station such as a gateway GW. Here, the airborne platform is shown in Table 1.

[0163] In Table 1, airborne platforms other than GEO satellites usually have feeder link switches while moving. The method of the embodiment of the present invention is applicable to, but not limited to, NTN communication systems where feeder link switches occur.

[0164] The following inventive embodiments will describe the method of the embodiment of the present invention using an NTN communication system with a LEO satellite platform, but this does not mean that the method of the embodiment of the present invention can be used only with an NTN communication system with a LEO satellite platform.

[0165] As shown in FIG. 2, a LEO satellite in transparent transmission switches from a feeder link established with a Gateway (GW) 1 to a feeder link established with a GW2 during movement, where GW1 is connected to a base station 1, and GW2 is connected to a base station 2. That is, the LEO satellite switches from a base station 1 to a base station 2 during movement. Here, the base station may be a gNB in ​​5G cellular mobile communication.

[0166] The target base station is a base station to which the UE switches from the current serving base station while the UE is moving on the LEO satellite. For example, as shown in FIG. 2, at time T1, gNB1 is connected to the UE via GW1 and the LEO satellite, and gNB1 is the serving base station of the UE. During the movement of the LEO satellite, that is, from time T1 to time T2, the base station to which the UE is connected switches from gNB1 to gNB2. gNB2 is the target base station.

[0167] The reference connection waiting time length may be a certain time length, which may be specified by a communication protocol or may be determined by a core network or a base station based on the number of UEs covered by the LEO satellite signals and / or the number of UEs that need to be connected to a target base station.

[0168] The connection standby time length scaling factor allows the UE to adjust the connection standby time length based on the reference connection standby time length. The connection standby time length scaling factor is associated with the UE, and different UEs can have different connection standby time length scaling factors. Here, the connection standby time length scaling factor may be associated with the type of the UE, or may be associated with the current service characteristics of the UE, etc.

[0169] According to the reference connection standby time length and the scaling factor of the connection standby time length associated with the UE, the connection standby time length of each UE can be obtained. Since the scaling factor of the connection standby time length is different, the connection standby time length of each UE is also different. Exemplarily, the product of the reference connection standby time length and the multiplication factor of the connection standby time length, or the quotient of the reference connection standby time length divided by the scaling factor of the connection standby time length can be determined as the connection standby time length, where, when the connection standby time length is determined by division, the scaling factor of the connection standby time length is not 0. Here, the scaling factor of the connection standby time length may be a non-negative number less than or equal to 1, or a positive number greater than 1.

[0170] The predetermined connection time may be a time when switching to the target base station instructed by the serving base station starts, or may be a time when the satellite establishes a connection with the target base station, etc. As shown in FIG. 2, the predetermined connection time may be time T2. The UE can connect to the target base station based on the predetermined connection time and the connection waiting time length. For example, the UE can connect to the target base station after the connection waiting time length after the predetermined connection time. Since the connection waiting time length of each UE is different, the time when the UE connects to the target base station is also different, and thus the number of UEs connecting to the target base station at the same time is reduced, and network congestion is alleviated.

[0171] In this way, by connecting to the target base station after a specified connection time based on the connection waiting time length associated with each UE, the number of UEs connecting to the target base station at the same time is reduced, thereby easing network congestion.

[0172] Here, the instruction information indicating the target base station, and / or the instruction information indicating the reference connection waiting time length, and / or the instruction information indicating the predetermined connection time can be transmitted to the UE by a serving base station. The serving base station can transmit the instruction information indicating the target base station, and / or the instruction information indicating the reference connection waiting time length, and / or the instruction information indicating the predetermined connection time to the UE by broadcasting. For example, the serving base station can broadcast the instruction information indicating the target base station, and / or the instruction information indicating the reference connection waiting time length, and / or the instruction information indicating the predetermined connection time, by including it in system information.

[0173] Here, the instruction information indicating the target base station may be a base station identifier of the target base station, or the like.

[0174] The UE determines the target base station, a predetermined connection time Te and / or a reference connection waiting time length T0, etc. by receiving the indication information transmitted from the serving base station.

[0175] In one embodiment, as shown in FIG. 7, the method includes: The method includes sending 602 instruction information to a UE to indicate a correspondence relationship between a service characteristic parameter and a range of a scaling factor of a connection waiting time length, where the correspondence relationship is for the UE to determine the scaling factor of the connection waiting time length.

[0176] Here, the correspondence between the service characteristic parameters and the range of the scaling coefficient of the connection waiting time length can be transmitted to the UE by the serving base station. The serving base station can transmit the correspondence to the UE by broadcasting. For example, the serving base station can include indication information indicating the correspondence in system information and broadcast it. The UE determines the correspondence after receiving the system information.

[0177] The UE may randomly take a value as its connection wait time length scaling factor within the range of the determined connection wait time length scaling factor.

[0178] For example, the UE may generate a random number rand within the range of the connection waiting time length scaling factor, and the random number may be evenly distributed within the range of the connection waiting time length scaling factor. Based on the randomly generated connection waiting time length scaling factor, the UE determines the connection waiting time length in combination with the reference connection waiting time length.

[0179] In this way, by randomly taking values ​​within the range of the scaling factor of the connection waiting time length, the number of situations where the values ​​are the same is reduced, and the number of situations where the connection waiting time length values ​​are the same is further reduced. UEs connect to target base stations based on different connection waiting time lengths, the number of UEs connecting to the target base station at the same time is reduced, and network congestion is alleviated.

[0180] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0181] Since the service characteristic parameter has many possible values, a correspondence between the range of the service characteristic parameter and the range of the connection wait time length scaling factor can be established. The possible values ​​of the service characteristic parameter can be divided into different ranges, and each service characteristic parameter range corresponds to one connection wait time length scaling factor range. The connection wait time length scaling factor ranges corresponding to different service characteristic parameter ranges may be the same or different.

[0182] The UE can determine the scaling factor of the connection waiting time length based on the corresponding relationship between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length.

[0183] Exemplarily, the service characteristic parameter may be a data delay (PDB, Packet Delay Budget), and 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 scaling factors for the connection waiting time length. The UE can select the PDB range corresponding to its own PDB and further determine the range of scaling factors for the corresponding connection waiting time length.

[0184] For example, the PDB sequence is PDBreference = {PDBreference_1,..., PDBeference_ n,..., PDBreference_N}, where 0 < PDBreference_1 <,..., < PDBreference_n <,... < PDBreference_N. Obtain the scaling factor for the reception waiting time length corresponding to each PDB, and denote the sequence consisting of the scaling factors for the connection waiting time length as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,... < P_N < 1.

[0185] The UE obtains the PDB corresponding to the QoS (flow) Flow based on the 5QI of the ongoing service.

[0186] When 0 ≤ PDB ≤ PDBreference_1, the UE can determine the scaling factor for the connection waiting time length within the range [0, P_1] of the scaling factor for the connection waiting time length. When PDBminreference_n - 1 < PDBmin ≤ PDBminreference_n, the UE can determine the scaling factor for the connection waiting time length within the range (P_n - 1, P_n] of the scaling factor for the connection waiting time length.

[0187] PDBmin > PDBminreference_ N, the UE can determine the scaling factor for the connection waiting time length within the range (P_n, 1] of the scaling factor for the connection waiting time length.

[0188] In one embodiment, the method is The method includes a step of sending, to the UE, indication information instructing switching or indication information instructing reconfiguration.

[0189] Here, connecting to the target base station may include switching to the target base station or initiating a reconfiguration to the target base station.

[0190] The serving base station may send indication information to the UE to instruct the UE to switch to or reestablish with the target cell. The serving base station may send the indication information by broadcasting.

[0191] For example, the serving base station instructs the UE to connect to the target base station in a switching manner by broadcasting. The UE finds the corresponding setting in the CHO according to the identifier of the target base station of the serving base station, and then triggers switching. If the corresponding setting in the CHO is not found, the UE may trigger reconfiguration.

[0192] When the serving base station broadcasts an instruction to the UE to connect to the target base station in a reconfiguration manner, if the UE adopts the reconfiguration, the UE initiates reconfiguration to the target base station based on the identifier of the target base station broadcasted by the network.

[0193] In one embodiment, the method further comprises: The method includes the step of transmitting indication information indicating a connection trigger time interval.

[0194] When the UE is in an idle state or an inactive state at a predetermined connection time, a connection trigger time interval is set, the connection trigger time interval is located after the predetermined connection time, and the connection trigger time interval may be a more frequent time step in which each UE switches from a serving base station to a target base station. When a UE in an idle state or an inactive state needs to trigger a connection to a base station within the connection trigger time interval and send a connection establishment request message, the UE can connect to the target base station after a connection waiting time length has elapsed since triggering a connection to the base station. That is, when it is determined that a connection establishment request message needs to be sent, the connection establishment request message may be sent after a connection waiting time length has elapsed.

[0195] Here, the serving base station may transmit, by broadcast or other means, indication information indicative of the connection trigger time interval to the UE.

[0196] Exemplarily, a UE in an idle state obtains a connection trigger time interval Tx through a network broadcast, where Tx may be less than or equal to a reference connection waiting time length T0, and when a predetermined connection time Te is reached, starts Tx, and when the UE in an idle state starts transmitting a connection establishment request message before Tx times out, starts a connection waiting time length T, and when T times out, the UE sends a connection establishment request message to connect to a target base station.

[0197] In this way, UEs in an idle or inactive state connect to a target base station based on different connection waiting time lengths, the number of UEs connecting to a target base station at the same time is reduced, and network congestion is alleviated.

[0198] Specific examples are provided below in combination with any of the above examples.

[0199] The complete content of the technical solutions provided by the examples of the present invention includes: 1. The UE obtains target base station indication information, such as a target gNB identifier, a predetermined connection time Te, and a reference connection waiting time length, for example, a maximum waiting time length T0, through system broadcast. 2. The network sets the corresponding relationship between the connection standby time length scaling coefficient and the service characteristic parameters, and the UE selects the corresponding connection standby time length scaling coefficient according to its own service characteristic parameters, where the service characteristic parameters can be indicated by Access Identity, Access Category, 5QI, QoS characteristic parameters, etc. 3. If the network does not broadcast the correspondence between the connection standby time length scaling coefficient and the service characteristic parameters, the UE generates a random number between 0 and 1 as the connection standby time length scaling coefficient. 4. The UE scales T0 to obtain the connection waiting time length timer T, and the scaling coefficient of the connection waiting time length is determined by 2 and 3. 5. The network can instruct UEs in a connected state to reestablish or switch over by broadcasting. 6. When the UE adopts handover, the UE finds the corresponding configuration in CHO based on the network broadcasted gNB identifier, and then triggers handover. If the corresponding configuration in CHO is not found, it will trigger reconfiguration later. 7. If the UE adopts reconfiguration, the UE initiates reconfiguration to the target gNB based on the network broadcasted gNB identifier. 8. When time Te is reached, start T, and when T times out, start the switchover or reconstruction process. Based on 9 and 8, the UE can synchronize with the target cell when the Te time is reached. 10. The UE in idle state obtains the timer length Tx through network broadcast. 11. When reaching time Te, the UE in the idle state starts Tx. If the transmission of the connection establishment request message starts before Tx times out, T is started. When T times out, the UE sends the connection establishment request message.

[0200] Embodiment 1: 1. The UE obtains the indication information of the target base station, such as the target gNB identifier, a predetermined connection time Te, and the reference connection waiting time length, for example, the longest waiting time length T0, through system broadcast. 2. The UE obtains the correspondence between the scaling factor of the connection waiting time length and the service characteristic parameter PDB through system broadcast: Set the sequence of PDB as PDBminreference = {PDBminreference_1,..., PDBminreference_ n,..., PDBminreference_N}, where 0 < PDBminreference_1 <,..., < PDBminreference_n <,..., < PDBminreference_N. Obtain the scaling factor of the connection waiting time length corresponding to each PDB, and record the sequence consisting of the scaling factors of the connection waiting time length as P = {P_1,..., P_N}, where 0 < P_1 <,..., < P_n <,..., < P_N < 1. 3. The UE obtains the corresponding PDB based on the 5QI of all uplink and downlink QoS flows of the ongoing service, and obtains the minimum value PDBmin among the PDBs corresponding to all QoS flows. 4. Determine T based on the minimum value PDBmin: 4.1. If 0 ≤ PDBmin ≤ PDBminreference_1 and the UE generates a random number rand, and this random number is evenly distributed in [0, P_1], the T time length corresponding to this UE is rand * T0. 4.2. If PDBminreference_n - 1 < PDBmin ≤ PDBminreference_n and the UE generates a random number rand, and this random number is evenly distributed in the range (P_n - 1, P_n], the T time length corresponding to this UE is rand * T0. 4.3, PDBmin> PDBminreference_ N, and the UE generates a random number rand, which is evenly distributed in the range (P_n, 1], then the T time period corresponding to this UE is rand*T0. 5. When the network instructs the connected UE to adopt switching by broadcasting, the UE finds the corresponding configuration in CHO based on the network broadcasted gNB identifier and later triggers switching. 6. When the Te time is reached, 6.1. Start T. When T times out, trigger synchronization between the UE and the target cell and start the switching process, such as random access and RRC reconfiguration. or 6.2. The UE synchronizes with the target cell and starts T. When T times out, it starts the switching process, such as random access and RRC reconfiguration.

[0201] Example 2: 1. The UE obtains target base station indication information, such as a target gNB identifier, a predetermined connection time Te, and a reference connection waiting time length, for example, a maximum waiting time length T0, through system broadcast. 2. The UE obtains the correspondence between the scaling coefficient of the connection waiting time length and the service characteristic parameter Access Identity through system broadcast. When Access Identity=1, the scaling coefficient of the connection waiting time length ∈[Pl_1,Pu_1], where 0≦Pl_1≦Pu_1≦1; when Access Identity=2, the scaling coefficient of the connection waiting time length ∈[Pl_2,Pu_2], where 0≦Pl_2≦Pu_2≦1; and when Access Identity=11, 12, ..., etc., the setting is similar. 3. When the UE has two Access Identities 1 and 2, if Pl_1>Pl_2 and Pu_1>Pu_2, Pl_new=Pl_2 and Pu_new=Pu_2, that is, the range of the scaling coefficient of the connection waiting time length corresponding to this UE is [Pl_2, Pu_2]. 4. If a UE generates a random number rand, and this random number is evenly distributed in [Pl_2, Pu_2], the T time length corresponding to this UE is rand*T0. 5. When the network instructs the UE in this connected state to adopt switching by broadcasting, the UE finds the corresponding configuration in CHO based on the network broadcasted gNB identifier and later triggers switching. 6. When the Te time is reached, 6.1. Start T. When T times out, trigger synchronization between the UE and the target cell and start the switching process, such as random access and RRC reconfiguration. or 6.2. The UE synchronizes with the target cell and starts T. When T times out, it starts the switching process, such as random access and RRC reconfiguration.

[0202] An embodiment of the present invention further provides a connection establishment device applied to a UE. As shown in FIG. 8, the connection establishment device 1000 includes a first determination module 1010 and a first connection module 1020, where: The first determination module 1010 is configured to determine a connection waiting time length for the UE to connect to a target base station based on a reference connection waiting time length and a connection waiting time length scaling factor associated with the UE; The first connection module 1020 is configured to connect to the target base station after a predetermined connection time based on the connection waiting time length.

[0203] In one embodiment, the device 1000 comprises: The UE further includes a second determination module 1030 configured to determine a scaling coefficient of the connection waiting time length corresponding to a service characteristic parameter associated with the UE based on a correspondence relationship between a service characteristic parameter and a range of a scaling coefficient of the connection waiting time length.

[0204] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0205] In one embodiment, the second determination module 1030 is The first determination submodule 1031 is configured to determine a scaling factor for the connection wait time length from a range of scaling factors for the connection wait time length corresponding to a range of the service characteristic parameter to which the service characteristic parameter associated with the UE belongs.

[0206] In one embodiment, the second determination module 1030 is The second determining submodule 1032 is configured to randomly select a connection wait time length scaling factor from a range of the connection wait time length scaling factors corresponding to the service characteristic parameter associated with the UE.

[0207] In one embodiment, the service characteristic parameters include at least one of an Access Identity, an Access Category, a 5th Generation Quality of Service Identifier (5QI) parameter, and a Quality of Service (QoS) characteristic parameter.

[0208] In one embodiment, the device 1000 comprises: a first receiving module 1040 configured to receive indication information indicating the correspondence relationship sent from a serving base station; a third determination module 1050 configured to determine the correspondence based on a communication protocol agreement.

[0209] In one embodiment, the second determination module 1030 is and a third determination submodule 1033 configured to determine, in response to at least two of the service characteristic parameters associated with the UE, a connection wait time length scaling coefficient from a range of the connection wait time length scaling coefficients having a smaller connection wait time length scaling coefficient among at least two ranges of the connection wait time length scaling coefficients corresponding respectively to the at least two service characteristic parameters associated with the UE.

[0210] In one embodiment, the first determination module 1010 is The fourth determining sub-module 1011 is configured to determine a product of the reference connection waiting time length and a scaling coefficient of the connection waiting time length as the connection waiting time length of the UE.

[0211] In one embodiment, the device 1000 comprises: The selection module 1060 includes a selection module configured to randomly select the connection wait time length scaling factor, where the connection wait time length scaling factor is not outside a range of preset time length scaling factors.

[0212] In one embodiment, the range of the scaling factor for the connection wait time length does not exceed 0 to 1, in response to the reference connection wait time length being a maximum value of the connection wait time length.

[0213] In one embodiment, the device 1000 comprises: a second receiving module 1070 configured to receive indication information indicating the target base station sent from a serving base station; a third receiving module 1080 configured to receive indication information indicating the reference connection waiting time length transmitted from the serving base station; and a fourth receiving module 1090 configured to receive indication information sent from the serving base station indicating the predetermined connection time.

[0214] In one embodiment, the first connection module 1020 includes: a first connection submodule 1021 configured to connect to the target base station after the connection standby time length has elapsed since the predetermined connection time in response to the UE being in a connected state; and a second connection submodule 1022 configured to connect to the target base station after the connection wait time length has elapsed since the connection was triggered in response to the UE being in an idle or inactive state and a connection being triggered within a connection trigger time interval after the predetermined connection time.

[0215] In one embodiment, the device 1000 comprises: The UE includes a synchronization module 1100 configured to synchronize with the target base station at a predetermined connection time in response to the UE being in a connected state.

[0216] In one embodiment, the first connection sub-module 1021 includes: and a connection unit 10211 configured to, in response to the UE being in a connected state, switch to the target base station or initiate reestablishment to the target base station after the connection waiting time length has elapsed from the predetermined connection time.

[0217] In one embodiment, the device 1000 comprises: a fifth receiving module 1110 configured to receive, from a serving base station, instruction information instructing a switch or instruction information instructing a reconfiguration; The connection unit 10211 is A first connection subunit 102111 configured to switch to the target base station in response to receiving instruction information instructing switching; and a second connection subunit 102112 configured to initiate reestablishment to the target base station in response to receiving instruction information instructing reestablishment.

[0218] In one embodiment, the device 1000 comprises: a sixth receiving module 1120 configured to receive indication information sent from a serving base station, the indication information indicating the connection trigger time interval; a fourth determining module 1130 configured to determine the connection trigger time interval based on a communication protocol agreement.

[0219] In one embodiment, the device 1000 comprises: and a first connection module 1140 configured to connect to the target base station after a connection is triggered in response to the UE being in an idle or inactive state and the connection being triggered outside a connection trigger time interval after the predetermined connection time.

[0220] An embodiment of the present invention further provides a connection establishment device applied to a base station, as shown in FIG. 9, the connection establishment device 200 includes a first sending module 210, where: The first sending module 210 is configured to send at least one of instruction information indicating a target base station, instruction information indicating a reference connection waiting time length, and instruction information indicating a predetermined connection time to a user equipment (UE); Here, the reference connection waiting time length is used in combination with a scaling factor of the connection waiting time length for the UE to determine a connection waiting time length until the UE connects to the target base station after a predetermined connection time.

[0221] In one embodiment, the device 200 comprises: The second sending module 220 includes a second sending module 220 configured to send, to a UE, instruction information indicating a correspondence relationship between a service characteristic parameter and a range of a scaling factor of a connection waiting time length, where the correspondence relationship is for the UE to determine the scaling factor of the connection waiting time length.

[0222] In one embodiment, the correspondence between the service characteristic parameters and the range of the scaling factor of the connection waiting time length is as follows: The correspondence between the range of the service characteristic parameter and the range of the scaling factor of the connection waiting time length is included.

[0223] In one embodiment, the device 200 comprises: The third sending module 230 is configured to send the instruction information instructing the switching or the instruction information instructing the reconfiguration to the UE.

[0224] In one embodiment, the device 200 comprises: and a fourth sending module 240 configured to send indication information indicating the connection trigger time interval.

[0225] 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 selection 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 transmitting module 210, the second transmitting module 220, the third transmitting module 230, and the fourth transmitting module 240, etc., may include one or more central processing units (CPU, Central Processing Unit), graphics processors (GPU, Graphics Processing Unit), baseband processors (BP, baseband processors), application specific integrated circuits (ASIC, Application Specific Integrated Circuits), DSPs, programmable logic devices (PLD, Programmable Logic Devices), or the like to perform the above method. The logic may be implemented by a Programmable Logic Device (CPLD), a Complex Programmable Logic Device (FPGA), a Field-Programmable Gate Array (FPGA), a general-purpose processor, a controller, a Micro Controller Unit (MCU), a microprocessor, or other electronic components.

[0226] 10 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.

[0227] Referring to FIG. 10 , the device 3000 may include one or more of 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.

[0228] The processing component 3002 typically controls the overall operation of the device 3000, such as operations related to display, phone calls, data communication, camera operation, and recording operation. The processing component 3002 may include one or more processors 820 that execute instructions to complete all or some steps in the above method embodiments. The processing component 3002 may also 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.

[0229] The memory 3004 is configured to store various types of data to support operation on the device 3000. Examples of these data include instructions for any application programs or methods for operating on the device 3000, contact data, phone book data, messages, images, videos, etc. The memory 3004 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk.

[0230] The power component 3006 provides power to the various components of the device 3000. The power component 3006 may include a power management system, one or more power sources, and other components associated with the generation, management, and distribution of power for the device 3000.

[0231] The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and a 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 can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can sense not only the boundaries of a touch or slide operation, but also the duration and pressure of 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 operation mode, for example, in 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 may be a fixed optical lens system or may have a focal length and an optical zoom function.

[0232] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 includes one microphone (MIC). When the device 3000 is in an operation mode, such as a call mode, a record mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal is further stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 further includes one speaker for outputting the audio signal.

[0233] The I / O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0234] The sensor component 3014 includes one or more sensors to provide a status assessment of each aspect of the device 3000. For example, the sensor component 3014 can detect the on / off state of the device 3000 and the relative positioning of the components, e.g., the display and keypad of the device 3000. The sensor component 3014 can further detect the position change of the device 3000 or one of the components of the device 3000, whether there is contact between the user and the device 3000, the orientation and position or acceleration / deceleration of the device 3000, and the temperature change of the device 3000. The sensor component 3014 can include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor component 3014 can further include an optical sensor, e.g., a CMOS or CCD image sensor used for imaging applications. In some embodiments, the sensor component 3014 can include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0235] 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 WiFi, 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 further includes a near field communication (NFC) module to facilitate near field 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.

[0236] 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 processors (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0237] In an exemplary embodiment, a non-transitory computer readable storage medium containing instructions is further provided, such as a memory 3004 containing instructions, which can be executed by the processor 3020 of the device 3000 to complete the above method. For example, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0238] Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any modifications, uses or adaptations of the present disclosure, which modifications, uses or adaptations follow the general principles of the present disclosure and include well-known or commonly used techniques in the art that are not disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0239] It should be understood that the present disclosure is not limited to the exact construction described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof, which is limited only by the appended claims.

Claims

1. A connection establishment method performed by a user equipment (UE), comprising: receiving, by the UE, indication information transmitted from a non-terrestrial network (NTN) serving base station, the indication information indicating a reference connection waiting time length and a predetermined connection time, the indication information being used for a time-triggered conditional handover (time based CHO); connecting to a target base station or a target cell based on a connection waiting time length after a predetermined connection time, the predetermined connection time being for triggering the CHO, the connection waiting time length being a product of the reference connection waiting time length and a coefficient, the coefficient being a positive number greater than 1; How the connection is established.

2. receiving indication information indicating the target base station or the target cell, the indication information being transmitted from the serving base station; The connection establishment method according to claim 1 .

3. A connection establishment method performed by a non-terrestrial network (NTN) serving base station, comprising: transmitting instruction information to a user equipment (UE), the instruction information instructing a reference connection waiting time length and a predetermined connection time, the instruction information being used for a time based conditional switching (time based CHO); The instruction information is used for the UE to connect to a target base station or a target cell based on a connection waiting time length after a predetermined connection time, the predetermined connection time is for triggering the CHO, and the connection waiting time length is a product of the reference connection waiting time length and a coefficient, the coefficient being a positive number greater than 1. How the connection is established.

4. and further comprising the step of transmitting, to the UE, indication information indicating a target base station or a target cell. The connection establishment method according to claim 3.

5. A processor; a memory configured to store an executable program executable by the processor; The processor, receiving indication information transmitted from a non-terrestrial network (NTN) serving base station, the indication information indicating a reference connection waiting time length and a predetermined connection time, the indication information being used for a time-triggered conditional handover (time based CHO); connecting to a target base station or a target cell based on a connection waiting time length after a predetermined connection time, the predetermined connection time being for triggering the CHO, the connection waiting time length being a product of the reference connection waiting time length and a coefficient, the coefficient being a positive number greater than 1; configured to execute the executable program to perform Communication equipment.

6. The processor, receiving indication information indicating the target base station or target cell transmitted from the serving base station; configured to execute the executable program to perform 6. A communication device according to claim 5.

7. A processor; a memory configured to store an executable program executable by the processor; The processor is configured to execute the executable program to perform the connection establishment method of claim 3. How the connection is established.

8. A non-transitory computer-readable storage medium containing instructions, The instructions, when executed by a processor of a communications device, cause the communications device to perform the connection establishment method of claim 1. A non-transitory computer-readable storage medium.

9. A non-transitory computer-readable storage medium containing instructions, The instructions, when executed by a processor of a communications device, cause the communications device to perform a connection establishment method according to claim 3. A non-transitory computer-readable storage medium.

Images