CN116388831A - Non-land network dual-connection method, main node equipment and communication system - Google Patents
Non-land network dual-connection method, main node equipment and communication system Download PDFInfo
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Abstract
The disclosure provides a non-land network dual-connection method, a main node device and a communication system, and relates to the technical field of wireless communication. And predicting satellites corresponding to future auxiliary node equipment according to ephemeris information of each satellite, and sending an auxiliary node equipment adding request message to the auxiliary node equipment corresponding to the predicted satellites, wherein the auxiliary node equipment adding request message comprises service time of the main node equipment and service quality requirements of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision, so that the auxiliary node equipment meeting the service time of the main node equipment is reasonably matched, and the condition of frequent adding, changing or deleting of the auxiliary node equipment is improved.
Description
Technical Field
The disclosure relates to the technical field of wireless communication, and in particular relates to a non-land network dual-connection method, a main node device and a communication system.
Background
Non-terrestrial network (Non-Terrestrial Networks, NTN) dual connectivity is through a Non-terrestrial network (e.g., satellite network). The network side control devices corresponding to the dual connection are respectively called a Master Node (MN) device and a Secondary Node (SN) device.
Compared with a land network dual-connection scene, in a non-land network dual-connection scene, even if a satellite adopts a ground fixed beam, namely, the satellite covers a ground fixed position through adjustment of a beam direction in a certain time, frequent addition, modification or deletion of auxiliary node equipment can be caused due to high-speed movement of the satellite. For example, for an LEO (Low Earth Orbit) satellite with an Orbit height of 600km and moving at a speed of 7.56km/s, its beam coverage diameter is about 700km, and if the number of beams supported by the satellite is 6, the terminal in the coverage cell needs to perform SN handover less than one minute.
Disclosure of Invention
According to the embodiment of the disclosure, satellites corresponding to future auxiliary node equipment are predicted according to ephemeris information of each satellite, and an auxiliary node equipment adding request message is sent to the auxiliary node equipment corresponding to the predicted satellites, wherein the auxiliary node equipment adding request message comprises service time of a main node equipment and service quality requirements of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network dual-connection decision, so that the auxiliary node equipment meeting the service time is reasonably matched for the main node equipment, and the frequent adding, changing or deleting conditions of the auxiliary node equipment are improved. In addition, configuration information of a plurality of auxiliary node devices based on time sequence is sent to the terminal at one time, so that the terminal can independently establish non-land network connection with the auxiliary node devices corresponding to the time at different times, air interface signaling and time delay expenditure in the process of adding, changing or deleting the auxiliary node devices are effectively reduced, and the robustness of the dual-connection service is improved.
Some embodiments of the present disclosure provide a dual connectivity method for a non-terrestrial network, applied to a master node device of the non-terrestrial network, including:
acquiring ephemeris information of each satellite;
predicting satellites corresponding to the auxiliary node equipment in the future according to ephemeris information of each satellite;
and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the prediction satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
In some embodiments, predicting satellites corresponding to non-secondary node devices includes: one or more satellites with relatively long available connection time are determined as satellites corresponding to future auxiliary node equipment according to ephemeris information of each satellite.
In some embodiments, further comprising:
receiving a satellite signal quality measurement result of a nearby cell, which is sent by a terminal under the condition that the current auxiliary node equipment does not meet the service quality requirement;
predicting the satellite corresponding to the auxiliary node equipment in the future again according to the ephemeris information of each satellite and the satellite signal quality measurement result of the nearby cell;
and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the re-predicted satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
In some embodiments, further comprising: and receiving an auxiliary node equipment adding confirmation message sent by the auxiliary node equipment, wherein the auxiliary node equipment adding confirmation message comprises the serviceable time information of the auxiliary node equipment.
In some embodiments, further comprising:
if receiving auxiliary node equipment adding confirmation information sent by a plurality of auxiliary node equipment, integrating service time of the plurality of auxiliary node equipment into service time of main node equipment according to service time information of each auxiliary node equipment so as to obtain auxiliary node equipment sequences based on time sequence;
and sending the configuration information of the auxiliary node equipment sequence based on the time sequence to the terminal, wherein the configuration information is used for indicating the terminal to establish non-land network connection with the auxiliary node equipment corresponding to the time at different times.
In some embodiments, further comprising:
if the terminal successfully establishes non-land network connection with the auxiliary node equipment corresponding to the time at different times before the access time is overtime, receiving a message of successful terminal connection sent by the auxiliary node equipment corresponding to the time, and sending the context information of the terminal to the auxiliary node equipment corresponding to the time; or alternatively, the process may be performed,
if the terminal does not access the auxiliary node equipment corresponding to the time after the access time is overtime, the terminal sends a connection release message to the auxiliary node equipment corresponding to the time, and sends a double connection reestablishment message to the terminal.
In some embodiments, further comprising:
and if the service time of the auxiliary node equipment connected with the terminal expires, sending a connection release message to the auxiliary node equipment.
In some embodiments, the servable time information for the secondary node device includes a service start time and a longest connection time.
In some embodiments, integrating the service times of the plurality of secondary node devices into the service time of the primary node device comprises:
and continuing the next auxiliary node equipment after the service time of the previous auxiliary node equipment expires according to the sequence from the early to the late of the service start time of the auxiliary node equipment until the whole service time of each auxiliary node equipment covers the service time of the main node equipment, wherein if the service times of the adjacent auxiliary node equipment are overlapped, the auxiliary node equipment with better service quality is selected to provide service in the overlapped time period.
In some embodiments, the primary node device or secondary node device of the non-terrestrial network is one or more of a satellite, a satellite-corresponding base station.
Some embodiments of the present disclosure propose a master node device applied to a non-terrestrial network, comprising:
a memory; the method comprises the steps of,
a processor coupled to the memory, the processor configured to perform a non-terrestrial network dual connectivity method based on instructions stored in the memory.
Some embodiments of the present disclosure propose a master node device applied to a non-terrestrial network, comprising:
an acquisition unit configured to acquire ephemeris information of each satellite;
the prediction unit is configured to predict satellites corresponding to the future auxiliary node equipment according to ephemeris information of each satellite; the method comprises the steps of,
the sending unit is configured to send an auxiliary node device adding request message to auxiliary node devices corresponding to the prediction satellite, wherein the auxiliary node device adding request message comprises service time of the main node device and service quality requirements of the auxiliary node device and is used for assisting the auxiliary node device to make a non-land network double-connection decision.
In some embodiments, further comprising:
an integrating unit configured to integrate service times of the plurality of auxiliary node devices into service times of the master node device according to the serviceable time information of each auxiliary node device if receiving the auxiliary node device addition confirmation message sent by the plurality of auxiliary node devices, so as to obtain a sequence of auxiliary node devices based on time sequence;
the sending unit is configured to send configuration information of the auxiliary node equipment sequence based on time sequence to the terminal, and is used for indicating the terminal to establish non-land network connection with the auxiliary node equipment corresponding to the time at different times.
Some embodiments of the present disclosure provide a communication system applied to a non-terrestrial network, including: a master node device configured to perform a non-terrestrial network dual connectivity method; and at least one secondary node device.
Some embodiments of the present disclosure propose a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of a non-terrestrial network dual connectivity method.
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The drawings that are required for use in the description of the embodiments or the related art will be briefly described below. The present disclosure will be more clearly understood from the following detailed description with reference to the accompanying drawings.
It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without inventive faculty.
Fig. 1a illustrates a transparent forwarding-based NTN dual-connectivity architecture schematic diagram of some embodiments of the present disclosure.
Fig. 1b illustrates a schematic diagram of an NTN dual connectivity architecture based on a satellite-borne base station according to some embodiments of the present disclosure.
Fig. 2 illustrates a schematic diagram of an NTN dual connectivity configuration of some embodiments of the present disclosure.
Fig. 3 illustrates a schematic diagram of NTN dual connectivity setup and hold of some embodiments of the present disclosure.
Fig. 4 illustrates a schematic diagram of NTN dual connectivity reconfiguration (updating) of some embodiments of the present disclosure.
Fig. 5a shows a schematic diagram of NTN dual connectivity of some embodiments of the present disclosure.
FIG. 5b shows a schematic diagram of SN satellite timing for each satellite feedback in the scenario shown in FIG. 5 a.
FIG. 5c is a schematic diagram showing the SN satellite timing after integrating FIG. 5 b.
Fig. 6 illustrates a schematic structure of a master node device applied to a non-terrestrial network according to some embodiments of the present disclosure.
Fig. 7 illustrates a schematic structure of a master node device applied to a non-terrestrial network according to some embodiments of the present disclosure.
Fig. 8 illustrates a schematic structure of a communication system applied to a non-terrestrial network according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure.
Unless specifically stated otherwise, the descriptions of "first," "second," and the like in this disclosure are used for distinguishing between different objects and are not used for indicating a meaning of size or timing, etc.
NTN dual connectivity architectures include, for example, but are not limited to, transparent forwarding-based NTN dual connectivity architecture and satellite-based base station-based NTN dual connectivity architecture.
Fig. 1a illustrates a transparent forwarding-based NTN dual-connectivity architecture schematic diagram of some embodiments of the present disclosure.
As shown in fig. 1a, in the NTN dual connectivity architecture based on transparent forwarding, a satellite serves as a relay node between a ground base station (e.g., gNB) and a terminal (e.g., UE (User Equipment)), and only forwards wireless signals transparently. One ground base station is used as a Master Node (MN) device for radio resource management and connection control, and the other ground base station is used as an auxiliary node (SN) device, and can be added or deleted as required. In addition, an NTN Gateway (Gateway) may be disposed between the satellite and a ground base station, where the ground base station is connected to a ground Core Network (e.g., a 5G Core Network (CN)), and the ground Core Network is also connected to a Data Network (Data Network). Wherein NR-Uu, NG, xn, N6 represents a network interface.
Fig. 1b illustrates a schematic diagram of an NTN dual connectivity architecture based on a satellite-borne base station according to some embodiments of the present disclosure.
As shown in fig. 1b, the satellite has some or all of the base station functionality, and the satellite may directly take the role of a primary node (MN) device or a Secondary Node (SN) device. The satellites can directly perform information interaction through the Xn interface so as to realize the sharing of ephemeris information, air interface state and other information. In addition, an NTN gateway may be disposed between the satellite and the ground, where the NTN gateway is connected to a ground core Network (e.g., 5G CN) and the ground core Network is also connected to a Data Network (Data Network). Where NR-Uu, NG, xn, N6, NG over SRI (i.e., SRI based NG) represent network interfaces and SRI represent satellite radio interfaces (Satellite Radio Interface).
The primary node device and the secondary node device in the subsequent embodiments of the present disclosure may be a satellite, or may be a satellite and a base station, or may be a base station. For example, under the architecture of fig. 1a, the primary node device and the secondary node device may be base stations, and establish an air interface connection with the terminal through satellites; under the architecture of fig. 1b, if the satellite has all base station functions, the main node device and the auxiliary node device may be satellites, and if the satellite has some base station functions, the main node device and the auxiliary node device may be satellites and base stations.
According to the embodiment of the disclosure, satellites corresponding to future auxiliary node equipment are predicted according to ephemeris information of each satellite, and an auxiliary node equipment adding request message is sent to the auxiliary node equipment corresponding to the predicted satellites, wherein the auxiliary node equipment adding request message comprises service time of a main node equipment and service quality requirements of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network dual-connection decision, so that the auxiliary node equipment meeting the service time is reasonably matched for the main node equipment, and the frequent adding, changing or deleting conditions of the auxiliary node equipment are improved. In addition, configuration information of a plurality of auxiliary node devices based on time sequence is sent to the terminal at one time, so that the terminal can independently establish non-land network connection with the auxiliary node devices corresponding to the time at different times, air interface signaling and time delay expenditure in the process of adding, changing or deleting the auxiliary node devices are effectively reduced, and the robustness of the dual-connection service is improved.
The non-terrestrial network dual connectivity method is described below with reference to fig. 2, 3, and 4.
Fig. 2 illustrates a schematic diagram of an NTN dual connectivity configuration of some embodiments of the present disclosure.
Step 20: in the NTN dual connectivity architecture, a Core Network (CN) maintains ephemeris information and corresponding service areas for each satellite. Thus, the MN device can send a request to the CN to obtain ephemeris information for its nearby satellites before establishing the dual connection.
Ephemeris information is in two forms:
form 1: satellite three-dimensional position, velocity;
form 2: the track rising intersection point is right ascent, the track inclination angle, the near-spot angular distance, the long radius, the eccentricity and the flat-near spot angle.
Step 21: the MN device selects a satellite corresponding to the SN device that can establish a dual connection based on ephemeris information and corresponding service areas of other satellites provided by the CN. The MN device may obtain the available connection time of the satellite for the target area according to the satellite orbit height and the movement speed in the ephemeris information, and select SN devices corresponding to one or more satellites with relatively long available connection time, so as to avoid frequent connection release and reestablishment.
Step 22: the MN device sends an SN device addition request message to its selected SN device, which may contain information such as the MN device's own service time and expected quality of service requirements for the SN device to assist the SN device in making a dual connectivity decision.
Step 23: the SN device may determine whether an effective and reliable dual connectivity service can be provided within a service time of the MN device based on the SN device add request message, so as to meet an expected quality of service requirement of the MN device for the SN device, where considerations include a radio air interface condition, a radio resource number, a service time, and the like. Under the condition that other conditions are met, the satellite service time of the SN equipment can cover part or all of the service time of the MN equipment, and the service quality requirement of the SN equipment expected by the MN equipment is met.
Step 24: the SN device makes a dual connectivity decision, replying to the MN device with an SN device add acknowledgement/rejection message. If the SN device decides to establish dual connectivity with the MN device, a radio resource of a certain size is reserved for the terminal, and the serviceable time information (such as the service start time, the longest connection time, etc.) of the SN device is provided in the SN device add acknowledgement message sent to the MN device. In addition, the SN device may determine the size of the radio resource to be reserved according to the quality of service requirements of the SN device provided by the MN device.
Step 25: if the MN equipment receives the adding confirmation messages of the plurality of SN equipment, the service time of the plurality of auxiliary node equipment is integrated into the service time of the main node equipment, so that an auxiliary node equipment sequence based on time sequence is obtained, and the terminal establishes, releases and reconfigures the SN equipment according to the integrated time sequence.
And continuing the next auxiliary node equipment after the service time of the previous auxiliary node equipment expires according to the sequence from the early to the late of the service start time of the auxiliary node equipment until the whole service time of each auxiliary node equipment covers the service time of the main node equipment, wherein if the service times of the adjacent auxiliary node equipment are overlapped, the auxiliary node equipment with better service quality is selected to provide service in the overlapped time period.
That is, service start times and the longest connection time of the plurality of satellites are integrated, so that the terminal establishes, releases and reconfigures the SN device according to the integrated time sequence. For example, if there are overlapping connection times of satellites of a plurality of SN devices, a satellite of an SN device that provides the best quality of service is selected, and the service start time and connection time of the satellite of the SN device are added to the timing information.
Step 26: the MN device issues configuration information (26 a) of a time sequence-based SN device sequence to the terminal, and the configuration information is used for indicating the terminal to establish non-terrestrial network connection with the SN device corresponding to the time at different times. The configuration information of the sequence of the timing-based SN devices may be transmitted through a radio resource control (Radio Resource Control, RRC) configuration message. The configuration information of the SN equipment sequence based on the time sequence not only comprises configuration information such as the identification of the SN equipment, wireless resources and the like, but also comprises the wireless connection establishment time and connection duration of the SN equipment. After the terminal configuration is completed, a configuration completion message (26 b), such as an RRC configuration completion message, is replied to. The method can lead the terminal to carry out initial random access with the corresponding SN equipment at the wireless connection establishment time of the target SN equipment after receiving the configuration information of the SN equipment sequence based on the time sequence, set a timer 1 based on the connection duration time of the SN equipment, and automatically release the wireless bearing with the SN equipment after the timer 1 is overtime.
Step 27: after receiving the configuration completion message replied by the terminal, the MN device sends an SN configuration completion message to the corresponding SN device, where the message may include the wireless connection establishment time and connection duration of the SN device determined after integration as required.
According to the embodiment of the disclosure, satellites corresponding to future auxiliary node equipment are predicted according to ephemeris information of each satellite, and an auxiliary node equipment adding request message is sent to the auxiliary node equipment corresponding to the predicted satellites, wherein the auxiliary node equipment adding request message comprises service time of a main node equipment and service quality requirements of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network dual-connection decision, so that the auxiliary node equipment meeting the service time is reasonably matched for the main node equipment, and the frequent adding, changing or deleting conditions of the auxiliary node equipment are improved.
Fig. 3 illustrates a schematic diagram of NTN dual connectivity setup and hold of some embodiments of the present disclosure.
After the terminal obtains the configuration information of the SN equipment sequence based on the time sequence, the configuration information of a plurality of SN equipment based on the time sequence is obtained at one time, the terminal autonomously establishes non-land network connection with the SN equipment corresponding to the time at different times, and meanwhile, the terminal maintains the connection with the MN equipment, thereby realizing the establishment and release of double connection according to the time sequence. The NTN dual connection establishment and successful maintenance procedure is shown in fig. 3.
Step 31: based on the timing sequence, the terminal waits for the arrival of the wireless connection setup time of the SN device.
Step 32: the terminal sets a timer 1 based on the connection duration in the SN device sequence timing information, sets a timer 2 based on the set access time, and starts the timer 1 and the timer 2 at the wireless connection setup time of the SN device.
Step 33: when the wireless connection establishment time of the SN equipment arrives, the terminal initiates random access to the SN equipment.
Step 34: if the random access process is successfully completed before the timer 2 times out, the SN equipment sends a connection success message to the MN equipment so as to inform the MN equipment that the SN configuration based on the time sequence is being successfully executed; otherwise, if the timer 2 is overtime and the random access process is not completed successfully, the MN equipment sends a connection release message to the SN equipment to release resources in time, and sends a double connection reestablishment message to the terminal to reestablish double connection, and the proper SN equipment is reselected.
Step 35: after receiving the connection success message, the MN device sends a sequence number state transition message to the SN device, which contains the context information of the terminal.
Step 36: the SN device establishes radio data bearers (Data Radio Bearer, DRBs) and radio signaling bearers (Signaling Radio Bearer, SRBs) for the terminal and provides efficient and reliable service to the terminal for the duration of the connection using the reserved radio resources to meet the quality of service requirements expected by the MN device for the SN device.
Step 37: when the timer 1 times out, the terminal automatically releases the wireless connection of the SN device and deletes the configuration information of the SN device (37 a). Meanwhile, the MN device sends a connection release message (37 b) to the SN device to cause the SN device to release the radio bearers such as DRB and SRB, and delete the context information of the terminal. The terminal may then proceed to perform the process of steps 31-37 for the next SN device in the timing sequence.
According to the method and the device for establishing the non-terrestrial network connection, the configuration information of the plurality of auxiliary node devices based on the time sequence is sent to the terminal at one time, so that the terminal can independently establish the non-terrestrial network connection with the auxiliary node devices corresponding to the time at different times, the air interface signaling and time delay expenditure in the process of adding, changing or deleting the auxiliary node devices are effectively reduced, and the robustness of the dual-connection service is improved.
Fig. 4 illustrates a schematic diagram of NTN dual connectivity reconfiguration (updating) of some embodiments of the present disclosure.
The following describes the NTN dual connectivity reconfiguration (update) procedure in connection with fig. 4.
Step 41: if the current SN equipment can not meet the service quality requirement of the terminal, the terminal reports the satellite signal quality measurement result of the nearby cell to the MN equipment.
Step 42: after receiving the satellite signal quality measurement result of the nearby cell sent by the terminal, the MN device sends a connection release request to the SN device satellite.
Step 43: the SN device sends a connection release acknowledgement message to the MN device.
Step 44: after receiving the connection release confirmation of the SN equipment, the MN equipment selects a new SN equipment based on the ephemeris information and the satellite signal quality measurement result of the cell near the terminal.
Step 45: the MN device sends an SN device addition request to the new SN device, including the service time information and the terminal quality of service requirements (i.e., the quality of service requirements for the SN device) that need to be satisfied.
Step 46: if the new SN equipment can meet the requirement, enough wireless resources are reserved, and an SN equipment adding request confirmation message containing self-serviceable time information (such as service starting time, longest connection time and the like) is sent to the MN equipment; otherwise, the new SN device replies to the SN device addition request rejection message.
Step 47: after receiving the addition request confirmation message of the new SN device, the MN device updates the configuration information of the SN device sequence based on the time sequence and issues the configuration information to the terminal (47 a). The terminal feeds back a confirmation message (47 b) after completing the configuration update.
Step 48: the MN device feeds back an SN reconfiguration completion message.
According to the embodiment of the disclosure, the satellite corresponding to the auxiliary node equipment in the future is predicted again according to the ephemeris information of each satellite and the satellite signal quality measurement result of the cell near the terminal, the auxiliary node equipment is reconfigured, and the service quality of the terminal is guaranteed.
One example of application is listed below.
As shown in fig. 5a, the MN device is a geostationary orbit (Geostationary Orbit, GEO) satellite and fixedly covers the MN cell (cell) area, the SN device is a low orbit satellite and covers the SN cell area for a certain period of time, and the starting time of each SN satellite coverage SN cell may be different from the longest connection time.
The MN device predicts that the future SN1, SN2 and SN3 will cover the area where the SN cell is located based on the ephemeris information, sends an SN addition request, and receives SN satellite timing feedback as shown in fig. 5b, which includes the arrival time (i.e. service start time) of each SN satellite and the longest connection time, and the service times of multiple SN satellites may overlap. The MN needs to integrate the timing information of multiple SNs and send the timing information to the terminal, and the integrated SN satellite timing information is shown in fig. 5 c. Wherein T represents a basic time unit, such as hours.
The MN sends the configuration information containing the SN satellite sequence based on the time sequence shown in the figure 5c to the terminal, and the terminal actively connects with the SN1 satellite at the time T0 and continuously keeps connecting with 8T; the terminal actively connects with the SN2 satellite at the time T8 and continuously keeps connection 7T; the terminal actively connects with the satellite where SN3 is located at time T15 and continuously maintains connection 9T. And the establishment, release and reconfiguration processes of the SN are not required to be frequently initiated through an air interface, so that the power consumption and the wireless signaling overhead of the terminal are effectively reduced.
Fig. 6 illustrates a schematic structure of a master node device applied to a non-terrestrial network according to some embodiments of the present disclosure.
As shown in fig. 6, the master node device 600 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, the processor 620 being configured to perform the method in any of the embodiments based on instructions stored in the memory 610.
The master node device 600 may also include input-output interfaces 630, network interfaces 640, storage interfaces 650, and the like. These interfaces 630, 640, 650 and the memory 610 and processor 620 may be connected by, for example, a bus 660.
The memory 610 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), and other programs.
The processor 620 may be implemented as discrete hardware components such as a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA), or other programmable logic device, discrete gates, or transistors.
The input/output interface 630 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. Network interface 640 provides a connection interface for various networking devices. The storage interface 650 provides a connection interface for external storage devices such as SD cards, U-discs, and the like. Bus 660 may employ any of a variety of bus architectures. For example, bus structures include, but are not limited to, an industry standard architecture (Industry Standard Architecture, ISA) bus, a micro channel architecture (Micro Channel Architecture, MCA) bus, and a peripheral component interconnect (Peripheral Component Interconnect, PCI) bus.
Fig. 7 illustrates a schematic structure of a master node device applied to a non-terrestrial network according to some embodiments of the present disclosure.
As shown in fig. 7, the master node device 700 of this embodiment includes:
an acquisition unit 710 configured to acquire ephemeris information of each satellite;
a prediction unit 720 configured to predict a satellite corresponding to the future auxiliary node device according to ephemeris information of each satellite; the method comprises the steps of,
and the sending unit 730 is configured to send an auxiliary node device addition request message to the auxiliary node device corresponding to the predicted satellite, where the auxiliary node device addition request message includes the service time of the main node device and the service quality requirement of the auxiliary node device, and is used for assisting the auxiliary node device to make a non-land network dual-connection decision.
A prediction unit 720, configured to determine, according to ephemeris information of each satellite, one or more satellites with relatively long available connection time as satellites corresponding to the future auxiliary node device.
The master node device 700 further includes: the integrating unit 740 is configured to integrate the service time of the plurality of auxiliary node devices into the service time of the master node device according to the serviceable time information of each auxiliary node device if receiving the auxiliary node device addition acknowledgement message sent by the plurality of auxiliary node devices, so as to obtain a sequence of auxiliary node devices based on time sequence. The sending unit 730 is configured to send configuration information of the sequence of the auxiliary node devices based on the time sequence to the terminal, for instructing the terminal to establish a non-terrestrial network connection with the auxiliary node device corresponding to the time at different times.
The master node device 700 further includes: a reconfiguration unit 750 configured to receive a measurement result of satellite signal quality of a neighboring cell transmitted by the terminal when the current auxiliary node device does not meet the quality of service requirement; predicting the satellite corresponding to the auxiliary node equipment in the future again according to the ephemeris information of each satellite and the satellite signal quality measurement result of the nearby cell; and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the re-predicted satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
Fig. 8 illustrates a schematic structure of a communication system applied to a non-terrestrial network according to some embodiments of the present disclosure.
As shown in fig. 8, the communication system includes: a primary node device 810, and at least one secondary node device 820. Master node device 810 is configured to perform the methods in any of some embodiments.
Some embodiments of the present disclosure propose a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method in any of some embodiments.
(1) A non-land network dual-connection method is applied to a main node device of a non-land network, and comprises the following steps:
acquiring ephemeris information of each satellite;
predicting satellites corresponding to the auxiliary node equipment in the future according to ephemeris information of each satellite;
and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the prediction satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
(2) Based on (1), predicting satellites corresponding to non-secondary node devices includes: one or more satellites with relatively long available connection time are determined as satellites corresponding to future auxiliary node equipment according to ephemeris information of each satellite.
(3) Based on (1) or (2), further comprising:
receiving a satellite signal quality measurement result of a nearby cell, which is sent by a terminal under the condition that the current auxiliary node equipment does not meet the service quality requirement;
predicting the satellite corresponding to the auxiliary node equipment in the future again according to the ephemeris information of each satellite and the satellite signal quality measurement result of the nearby cell;
and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the re-predicted satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
(4) Based on (1) or (2) or (3), further comprising: and receiving an auxiliary node equipment adding confirmation message sent by the auxiliary node equipment, wherein the auxiliary node equipment adding confirmation message comprises the serviceable time information of the auxiliary node equipment.
(5) Based on (1) or (2) or (3)) or (4), further comprising: if receiving auxiliary node equipment adding confirmation information sent by a plurality of auxiliary node equipment, integrating service time of the plurality of auxiliary node equipment into service time of main node equipment according to service time information of each auxiliary node equipment so as to obtain auxiliary node equipment sequences based on time sequence; and sending the configuration information of the auxiliary node equipment sequence based on the time sequence to the terminal, wherein the configuration information is used for indicating the terminal to establish non-land network connection with the auxiliary node equipment corresponding to the time at different times.
(6) Based on (1) or (2) or (3)) or (4) or (5), further comprising:
if the terminal successfully establishes non-land network connection with the auxiliary node equipment corresponding to the time at different times before the access time is overtime, receiving a message of successful terminal connection sent by the auxiliary node equipment corresponding to the time, and sending the context information of the terminal to the auxiliary node equipment corresponding to the time; or alternatively, the process may be performed,
if the terminal does not access the auxiliary node equipment corresponding to the time after the access time is overtime, the terminal sends a connection release message to the auxiliary node equipment corresponding to the time, and sends a double connection reestablishment message to the terminal.
(7) Based on (1) or (2) or (3)) or (4) or (5) or (6), further comprising: and if the service time of the auxiliary node equipment connected with the terminal expires, sending a connection release message to the auxiliary node equipment.
(8) Based on (1) or (2) or (3)) or (4) or (5) or (6) or (7), the serviceable time information of the secondary node device includes a service start time and a longest connection time.
(9) Integrating the service times of the plurality of secondary node devices into the service time of the primary node device based on (1) or (2) or (3)) or (4) or (5) or (6) or (7) or (8) includes: and continuing the next auxiliary node equipment after the service time of the previous auxiliary node equipment expires according to the sequence from the early to the late of the service start time of the auxiliary node equipment until the whole service time of each auxiliary node equipment covers the service time of the main node equipment, wherein if the service times of the adjacent auxiliary node equipment are overlapped, the auxiliary node equipment with better service quality is selected to provide service in the overlapped time period.
(10) Based on (1) or (2) or (3)) or (4) or (5) or (6) or (7) or (8) or (9), the primary node device or the secondary node device of the non-terrestrial network is one or more of a satellite, a satellite-corresponding base station.
It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more non-transitory computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flowchart and/or block of the flowchart illustrations and/or block diagrams, and combinations of flowcharts and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to enable any modification, equivalent replacement, improvement or the like, which fall within the spirit and principles of the present disclosure.
Claims (15)
1. A non-land network dual-connection method is applied to a main node device of a non-land network, and comprises the following steps:
acquiring ephemeris information of each satellite;
predicting satellites corresponding to the auxiliary node equipment in the future according to ephemeris information of each satellite;
and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the prediction satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
2. The method of claim 1, predicting satellites corresponding to non-secondary node devices comprising:
one or more satellites with relatively long available connection time are determined as satellites corresponding to future auxiliary node equipment according to ephemeris information of each satellite.
3. The method of claim 1, further comprising:
receiving a satellite signal quality measurement result of a nearby cell, which is sent by a terminal under the condition that the current auxiliary node equipment does not meet the service quality requirement;
predicting the satellite corresponding to the auxiliary node equipment in the future again according to the ephemeris information of each satellite and the satellite signal quality measurement result of the nearby cell;
and sending an auxiliary node equipment adding request message to auxiliary node equipment corresponding to the re-predicted satellite, wherein the auxiliary node equipment adding request message comprises the service time of the main node equipment and the service quality requirement of the auxiliary node equipment and is used for assisting the auxiliary node equipment to make a non-land network double-connection decision.
4. A method according to any one of claims 1-3, further comprising:
and receiving an auxiliary node equipment adding confirmation message sent by the auxiliary node equipment, wherein the auxiliary node equipment adding confirmation message comprises the serviceable time information of the auxiliary node equipment.
5. The method of claim 4, further comprising:
if receiving auxiliary node equipment adding confirmation information sent by a plurality of auxiliary node equipment, integrating service time of the plurality of auxiliary node equipment into service time of main node equipment according to service time information of each auxiliary node equipment so as to obtain auxiliary node equipment sequences based on time sequence;
and sending the configuration information of the auxiliary node equipment sequence based on the time sequence to the terminal, wherein the configuration information is used for indicating the terminal to establish non-land network connection with the auxiliary node equipment corresponding to the time at different times.
6. The method of claim 5, further comprising:
if the terminal successfully establishes non-land network connection with the auxiliary node equipment corresponding to the time at different times before the access time is overtime, receiving a message of successful terminal connection sent by the auxiliary node equipment corresponding to the time, and sending the context information of the terminal to the auxiliary node equipment corresponding to the time; or alternatively, the process may be performed,
if the terminal does not access the auxiliary node equipment corresponding to the time after the access time is overtime, the terminal sends a connection release message to the auxiliary node equipment corresponding to the time, and sends a double connection reestablishment message to the terminal.
7. The method of claim 5, further comprising:
and if the service time of the auxiliary node equipment connected with the terminal expires, sending a connection release message to the auxiliary node equipment.
8. The method of claim 4, the servable time information of the secondary node device includes a service start time and a longest connection time.
9. The method of claim 5, integrating the service times of the plurality of secondary node devices into the service time of the primary node device comprises:
and continuing the next auxiliary node equipment after the service time of the previous auxiliary node equipment expires according to the sequence from the early to the late of the service start time of the auxiliary node equipment until the whole service time of each auxiliary node equipment covers the service time of the main node equipment, wherein if the service times of the adjacent auxiliary node equipment are overlapped, the auxiliary node equipment with better service quality is selected to provide service in the overlapped time period.
10. The method according to any of claims 1-9, wherein the primary node device or the secondary node device of the non-terrestrial network is one or more of a satellite, a satellite-corresponding base station.
11. A master node device for use in a non-terrestrial network, comprising:
a memory; the method comprises the steps of,
a processor coupled to the memory, the processor configured to perform the non-terrestrial network dual connectivity method of any of claims 1-10 based on instructions stored in the memory.
12. A master node device for use in a non-terrestrial network, comprising:
an acquisition unit configured to acquire ephemeris information of each satellite;
the prediction unit is configured to predict satellites corresponding to the future auxiliary node equipment according to ephemeris information of each satellite; the method comprises the steps of,
the sending unit is configured to send an auxiliary node device adding request message to auxiliary node devices corresponding to the prediction satellite, wherein the auxiliary node device adding request message comprises service time of the main node device and service quality requirements of the auxiliary node device and is used for assisting the auxiliary node device to make a non-land network double-connection decision.
13. The master node device of claim 12, further comprising:
an integrating unit configured to integrate service times of the plurality of auxiliary node devices into service times of the master node device according to the serviceable time information of each auxiliary node device if receiving the auxiliary node device addition confirmation message sent by the plurality of auxiliary node devices, so as to obtain a sequence of auxiliary node devices based on time sequence;
the sending unit is configured to send configuration information of the auxiliary node equipment sequence based on time sequence to the terminal, and is used for indicating the terminal to establish non-land network connection with the auxiliary node equipment corresponding to the time at different times.
14. A communication system for use in a non-terrestrial network, comprising:
a master node device configured to perform the non-terrestrial network dual connectivity method of any of claims 1-10; and at least one secondary node device.
15. A non-transitory computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the non-terrestrial network dual connectivity method of any of claims 1-10.
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| CN116582875B (en) * | 2023-07-07 | 2023-10-03 | 中国电信股份有限公司 | Dual-connection establishment method, apparatus, electronic device and storage medium |
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