WO2023070956A1 - Coverage extension method and apparatus for satellite network - Google Patents

Coverage extension method and apparatus for satellite network Download PDF

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Publication number
WO2023070956A1
WO2023070956A1 PCT/CN2022/072267 CN2022072267W WO2023070956A1 WO 2023070956 A1 WO2023070956 A1 WO 2023070956A1 CN 2022072267 W CN2022072267 W CN 2022072267W WO 2023070956 A1 WO2023070956 A1 WO 2023070956A1
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WIPO (PCT)
Prior art keywords
node
satellite
auxiliary
signaling
auxiliary node
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PCT/CN2022/072267
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French (fr)
Chinese (zh)
Inventor
张雪菲
刘睿
韩书君
许晓东
董晴
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北京邮电大学
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Publication of WO2023070956A1 publication Critical patent/WO2023070956A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the technical field of satellite communication, and in particular to a method and device for coverage extension of a satellite network.
  • satellite communication Compared with terrestrial mobile communication, satellite communication has the characteristics of wide coverage and little impact on the ground. In recent years, it has been widely used in basic communication guarantee, emergency communication and disaster communication scenarios. However, satellite communication also has the problems of relatively independent technology and lack of interaction and integration with the ground mobile network. It is difficult to give full play to the advantages of both the ground network and the satellite network.
  • the satellite network is only used as an emergency supplement to the ground network to ensure basic communication services; at the same time, With the development of satellite technology, the throughput of a single satellite is gradually increasing. According to the data of the Starlink project, the throughput of a single satellite has reached at least 20Gbps. At the same time, satellite data services have good application prospects in the central and western regions and desert ocean areas where the ground network coverage is insufficient. However, the services in these areas also have the problem of uneven temporal and spatial distribution. Therefore, the coverage mechanism that can solve the coverage problem in remote areas is currently the important issues to be resolved.
  • the disclosure provides a satellite network coverage expansion method and device, which are used to solve the defect of uneven temporal and spatial distribution of services in remote areas with insufficient ground network coverage in the prior art, and realize the integration of the ground network and the satellite network.
  • LEO Low Earth Orbit, Low Earth Orbit
  • satellite network enhances the coverage of the ground network.
  • the present disclosure provides a coverage extension method of a satellite network, which is applied to the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, and the service node and the auxiliary node As well as a communication connection on the home network side, the auxiliary node communicates with the satellite side that establishes communication with the home network side.
  • the method includes the following steps:
  • the service node monitors the traffic of the user equipment within its coverage
  • the service node When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
  • auxiliary node request signaling Based on the auxiliary node request signaling, activate the auxiliary node and monitor the satellite side;
  • the content-based mode is activated; wherein, the content-based mode is to set the auxiliary node to plug and play The ready-to-use mode, and the auxiliary node integrates the message into a form of request message and sends it to the satellite side.
  • the activation of the auxiliary node based on the auxiliary node request signaling to monitor the satellite side specifically includes:
  • auxiliary nodes When there is more than one auxiliary node, multiple auxiliary nodes compete for the auxiliary node request signaling through random codes, and there is only one auxiliary node that obtains the auxiliary node request signaling based on competition, and Activation is performed based on the secondary node request signaling.
  • the auxiliary node is activated based on the auxiliary node request signaling, and the satellite side is monitored.
  • the auxiliary node when there is more than one auxiliary node, it specifically includes the following step:
  • the auxiliary node After receiving the auxiliary node request signaling, the auxiliary node randomly generates a corresponding random code, and sends an auxiliary node notification signaling to the serving node; wherein, the auxiliary node notification signaling carries the Random code, identity code and channel state information;
  • the serving node determines one of the auxiliary nodes as an auxiliary node to be activated based on the channel state information in the auxiliary node notification signaling, and sends an auxiliary node confirmation signaling to the auxiliary node to be activated; Wherein, the auxiliary node confirmation signaling carries the random code;
  • the auxiliary node to be activated acquires the auxiliary node confirmation signaling, activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling, and monitors the satellite side.
  • the auxiliary node after the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activates the content-based mode, specifically including:
  • the satellite node After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, based on the identity code for verifying the satellite node carried in the satellite node response signaling, the satellite node Validate and activate content-based mode directly after successful validation.
  • the present disclosure also provides a satellite network coverage extension method, which is applied to the home network side, and the home network side communicates with the satellite side and the ground side, and the ground side includes a service node and an auxiliary node, and the service node is connected to the ground side.
  • the auxiliary node is located in the same area, the service node is communicatively connected with the auxiliary node and the home network side, the auxiliary node is communicatively connected with the satellite side, and the satellite side includes several satellite nodes, the method includes the following step:
  • the present disclosure also provides a coverage extension method of a satellite network, which is applied to the satellite side, and the satellite side includes several satellite nodes, and the satellite nodes communicate with the home network side and the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, the service node is communicatively connected with the auxiliary node and the home network side, and the auxiliary node is communicatively connected with the satellite node, the method includes the following steps :
  • the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them communicates with the service node.
  • the auxiliary node and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
  • the satellite node After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
  • the satellite node obtains the transmission signaling of the satellite node on the home network side and activates it, specifically including:
  • the service node When there is more than one auxiliary node on the ground side, the service node sends an auxiliary node request signaling to the auxiliary node; wherein, the auxiliary node request signaling is when the service node monitors its coverage Generated when the traffic of the user equipment within exceeds the preset value;
  • the auxiliary node After receiving the auxiliary node request signaling, the auxiliary node randomly generates a corresponding random code, and sends an auxiliary node notification signaling to the serving node; wherein, the auxiliary node notification signaling carries the Random code, identity code and channel state information;
  • the serving node determines one of the auxiliary nodes as an auxiliary node to be activated based on the channel state information in the auxiliary node notification signaling, and sends an auxiliary node confirmation signaling to the auxiliary node to be activated; Wherein, the auxiliary node confirmation signaling carries the random code;
  • the auxiliary node to be activated obtains the auxiliary node confirmation signaling, and activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling; wherein, the activated auxiliary node The node receives the satellite node response signaling.
  • the present disclosure also provides a satellite network coverage extension device, which is applied to the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, and the service node and the auxiliary node are located in the same area.
  • the communication connection between the node and the home network side, and the communication connection between the auxiliary node and the satellite side establishing communication with the home network side, the device includes:
  • the first obtaining module is configured to monitor the traffic of the user equipment within its coverage through the service node;
  • the first sending module is configured to: when the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends a signal configured to activate to the assistant node secondary node request signaling for said secondary node;
  • the first activation module is configured to activate the auxiliary node and monitor the satellite side based on the auxiliary node request signaling;
  • the second activation module is configured to activate the content-based mode after the auxiliary node receives the activated satellite node response signaling sent by the satellite side; wherein the content-based mode is to use the auxiliary
  • the node is set to the plug-and-play mode, and the auxiliary node integrates the message into a form of request message and sends it to the satellite side.
  • the present disclosure also provides a satellite network coverage extension device, the home network side communicates with the satellite side and the ground side, the ground side includes a service node and an auxiliary node, and the service node and the auxiliary node are located in the same area
  • the service node is communicatively connected to the auxiliary node and the home network side
  • the auxiliary node is communicatively connected to the satellite side
  • the satellite side includes several satellite nodes
  • the device includes:
  • the second acquisition module is configured to acquire satellite node wake-up signaling and location information of the service node
  • the second sending module is configured to determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and the ephemeris information, and send a message to the satellite node capable of establishing a communication link with the auxiliary node
  • the satellite node sends the satellite node transmission signaling.
  • the present disclosure also provides a satellite network coverage expansion device, which is applied to the satellite side, and the satellite side includes several satellite nodes, and the satellite nodes are in communication connection with the home network side and the ground side.
  • node, the service node and the auxiliary node are located in the same area, the service node is communicatively connected to the auxiliary node and the home network side, the auxiliary node is communicatively connected to the satellite node, and the device includes:
  • the third obtaining module is configured to obtain and activate the satellite node transmission signaling on the home network side through the satellite node; wherein the satellite node transmission signaling includes the location information of the service node, One of the auxiliary nodes that is communicatively connected to the service node establishes a communication link with the satellite node based on the satellite node transmission signaling, and the auxiliary node that establishes the communication link with the satellite node uses a random code determined by competition;
  • the third sending module is configured to send a satellite node transmission signaling to the auxiliary node within the range of location information indicated in the satellite node transmission signaling after the satellite node is activated; wherein, the satellite node responds
  • the signaling carries an identity code configured to verify the satellite node.
  • the present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor.
  • the processor executes the program, it realizes any one of the satellite networks described above. Steps to override the extension method.
  • the present disclosure also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the satellite network coverage extension methods described above are implemented.
  • the present disclosure also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of any one of the satellite network coverage extension methods described above are implemented.
  • the satellite network coverage expansion method and device provide a signaling process for switching LEO satellites from a dormant state to an active state and a PnP connection establishment process supporting fast services, forming a network dynamic wide-area coverage expansion mechanism
  • the service node on the ground side monitors the traffic of the end user, and when the traffic exceeds the preset value, initiates satellite node wake-up signaling and the location information of the current service node to the home network side, and sends assistance to the auxiliary node on the ground side
  • the node requests signaling to activate the auxiliary node and monitor the satellite nodes on the satellite side; the home network side then determines the satellite nodes that can establish a communication link with the auxiliary node based on the location information and ephemeris information, and sends these satellite nodes that can establish a communication link
  • the node sends satellite node transmission signaling, and activates these satellite nodes based on the satellite node transmission signaling.
  • the activated auxiliary node will receive the satellite node response signaling sent by the activated satellite node, and activate the content-based
  • the content-based mode is a PnP mode that supports fast service.
  • the satellite network coverage expansion device disclosed in the present disclosure realizes the integration of the ground network and the satellite network, enhances the coverage of the LEO satellite network, and can be applied to the central and western regions. High-speed mobile scenarios, such as high-speed rail passing through the central and western regions, and coverage enhancement scenarios in remote areas.
  • FIG. 1 is a schematic flow diagram of the application of the satellite network coverage expansion method provided by the present disclosure to the ground side;
  • FIG. 2 is a schematic flow diagram of the application of the satellite network coverage extension method provided by the present disclosure to the home network side;
  • Fig. 3 is the flow schematic diagram that the coverage extension method of the satellite network provided by the present disclosure is applied to the satellite side;
  • FIG. 4 is a schematic diagram of each node performing signaling interaction in the coverage extension method of the satellite network provided by the present disclosure
  • FIG. 5 is a schematic diagram of a satellite network coverage extension method provided by the present disclosure applied to a high-speed mobile scenario
  • FIG. 6 is a schematic diagram of a satellite network coverage extension method provided by the present disclosure applied to a scene in a remote area;
  • FIG. 7 is a schematic structural diagram of a satellite network coverage extension device provided by the present disclosure applied to the ground side;
  • FIG. 8 is a schematic structural diagram of a satellite network coverage extension device provided by the present disclosure applied to the home network side;
  • FIG. 9 is a schematic structural diagram of the satellite network coverage extension device provided by the present disclosure applied to the satellite side;
  • Fig. 10 is a schematic structural diagram of an electronic device provided by the present disclosure.
  • the coverage extension method of the satellite network of the present disclosure is described, the method is applied to the ground side, and the ground side includes Serving node (service node) and Assisted node (assistant node), and Serving node is a serving base station (Base Station, BS) node, the Assisted node is a star-ground auxiliary BS node, the Serving node and the Assisted node are located in the same physical location area, for example, the Serving node is located in a community, the Assisted node is also located in the community, and each Assisted node is specifically located in a sub-area of the community within range.
  • Serving node serving base station
  • BS Base Station
  • BS Base Station
  • the Assisted node is a star-ground auxiliary BS node
  • the Serving node and the Assisted node are located in the same physical location area, for example, the Serving node is located in a community, the Assisted node is also located in the community, and each Assisted node is specifically located in a sub-
  • the Serving node communicates with the home network side, such as 5GC (5G Core Network), and there is at least one Assisted node that communicates with the Serving node.
  • the Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side.
  • the home network side also communicates with the Sa node.
  • the Sa node is installed on a LEO satellite.
  • Each of the above-mentioned nodes has a data cache unit, and the data cache unit can store the request message to complete routing and forwarding.
  • the method shown in Figure 1 applied to the ground side includes the following steps:
  • the Serving node monitors traffic of user equipment (User Equipment, UE) within its coverage.
  • user equipment User Equipment, UE
  • the serving node sends the satellite node wake-up signaling and the location information of the Serving node to the access and mobility management function (Access and Mobility Management Function, AMF) network element of the 5GC, and sends the Assisted
  • AMF Access and Mobility Management Function
  • the activated Assisted node receives the Sa node response signaling sent by the activated satellite side, activate the content-based mode.
  • the activated satellite side is at least one Sa node, and the content-based mode is to set the Assisted node to plug-and-play (Plug-and-Play, PnP) mode.
  • the UE changes the transport layer message to the source port number No change, the destination port is changed to the content name of the request, and the Assisted node integrates the message into the form of a request message and sends it to the Sa node on the satellite side.
  • both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
  • the competition-based Assisted node activation includes the following steps:
  • Assisted node broadcasts signaling with PnP (Plug and Play) Message type (message type) and Identification code (identification code) to the surrounding.
  • PnP Plug and Play
  • Message type messages type
  • Identification code identification code
  • the Assisted node After the Assisted node receives the auxiliary node request signaling, it randomly generates a corresponding Random Code, and sends the auxiliary node notification signaling to the Serving node.
  • the auxiliary node notification signaling carries the Random Code, Identification code and channel status information (Channel State Information, CSI).
  • the Serving node determines one of the Assisted nodes as the Assisted node to be activated, and sends an auxiliary node confirmation signaling to the Assisted node to be activated.
  • the Assisted node confirmation signaling carries a Random Code .
  • the Assisted node to be activated obtains the auxiliary node confirmation signaling, activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling, monitors the Sa node on the satellite side, and completes the corresponding auxiliary node activation process.
  • the Assisted node after the Assisted node receives the satellite node response signaling sent by the activated satellite side, it will not reply to the Sa node on the satellite side for confirmation. Instead, reactivate the content-based mode directly. Specifically, the Sa node is verified based on the Identification code carried in the satellite node response signaling to verify the Sa node, and the content-based mode is directly activated after the verification is successful.
  • the coverage expansion method of the satellite network of the present disclosure is described below in conjunction with FIG. 2.
  • the method is applied to the home network side, such as 5GC.
  • the home network side communicates with the satellite side and the ground side, and the ground side includes Serving node (service node) and Assisted node.
  • Serving node is the serving BS node
  • Assisted node is the star-ground auxiliary BS node
  • Serving node and Assisted node are located in the same physical location area, for example, Serving node is in a community, Assisted node is also located in the community, and each The Assisted node is specifically located within the sub-area of the cell.
  • the Serving node communicates with the home network side, and there is at least one Assisted node that communicates with the Serving node.
  • the Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side, and the satellite side includes several Sa nodes.
  • the home network side also communicates with the Sa node.
  • the Sa node is installed on a LEO satellite.
  • Each of the above-mentioned nodes has a data cache unit, and the data cache unit can store the request message to complete routing and forwarding.
  • the method shown in Figure 2 and applied to the home network side includes the following steps:
  • the AMF network elements of S500 and 5GC obtain the satellite node wake-up signaling of the Serving node and the location information reported by the Serving node.
  • the AMF network element determines a Sa node capable of establishing a communication link with the Assisted node according to the location information and ephemeris information, and sends a satellite node transmission signaling to the Sa node capable of establishing a communication link with the Assisted node. It should be noted that the Sa node that can establish a communication link with the Assisted node is more than one Sa node.
  • both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
  • the coverage extension method of the satellite network of the present disclosure is described below in conjunction with FIG. 3.
  • the method is applied to the satellite side.
  • the satellite side includes several Sa nodes (satellite nodes), and the Sa nodes are all connected to the home network side such as 5GC and the ground side.
  • the ground side Including Serving node (service node) and Assisted node (auxiliary node), Serving node is the serving base station (Base Station, BS) node, Assisted node is the star-ground auxiliary BS node, Serving node and Assisted node are located in the same physical location area, For example, the Serving node is located in a cell, the Assisted node is also located in the cell, and each Assisted node is specifically located in the sub-area of the cell.
  • the Serving node communicates with the home network side, there is at least one Assisted node and all communicate with the Serving node, and the Assisted node also communicates with some Sa nodes.
  • the Sa node is installed on a LEO satellite.
  • Each of the above-mentioned nodes has a data cache unit, and the data cache unit can store the request message to complete routing and forwarding.
  • the method shown in Figure 3 and applied to the satellite side includes the following steps:
  • one or more of the Sa nodes obtain the satellite node transmission signaling of the 5GC AMF, and activate these Sa nodes, the satellite node transmission signaling contains the position information of the Serving node, and one of the Assisted nodes communicates with the Serving node Establish a communication link with the Sa node based on satellite node transmission signaling, and the Assisted node that establishes a communication link with the Sa node is determined through Random Code competition.
  • the Sa node After the Sa node is activated, send a satellite node response signaling to the Assisted node within the range of the location information indicated in the satellite node transmission signaling, and the satellite node response signaling carries an Identification code configured to verify the Sa node.
  • both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
  • the Assisted node is activated through the competition of Random Code (random code), and there is one and only one Assisted node to obtain the auxiliary node based on the competition request signaling, and activate based on the secondary node request signaling.
  • Random Code random code
  • the LEO satellite network hardly provides services, but in remote areas, the LEO satellite network needs to provide services for a certain period of time, so the LEO satellite network is always on in this state. High energy consumption and will reduce the service life of LEO satellites.
  • the coverage extension method of the satellite network disclosed in the present disclosure provides a signaling process for changing the LEO satellite from a dormant state to an active state and a PnP connection establishment process supporting fast services, forming
  • the network dynamic wide-area coverage expansion mechanism monitors the traffic of end users through the service node on the ground side, and when the traffic exceeds the preset value, initiates satellite node wake-up signaling and the location information of the current service node to the home network side, and, Send the auxiliary node request signaling to the auxiliary node on the ground side to activate the auxiliary node and monitor the satellite node on the satellite side; the home network side then determines the satellite node that can establish a communication link with the auxiliary node based on the location information and ephemeris information, Send satellite node transmission signaling to these satellite nodes that can establish communication links, and activate these satellite nodes based on the satellite node transmission signaling, based on random code competition, the activated auxiliary nodes will receive the satellite nodes sent by the activate
  • the content-based mode is a PnP mode that supports fast services.
  • the coverage expansion method of the satellite network disclosed in the present disclosure realizes the integration of the ground network and the satellite network, and enhances the coverage of the LEO satellite network. , can be applied to high-speed mobile scenarios in the central and western regions, such as high-speed rail passing through the central and western regions, and coverage enhancement scenarios in remote areas.
  • the coverage extension method of the disclosed satellite network optimizes the signaling interaction process.
  • New Radio New Radio, NR
  • the satellite network coverage extension method of the present disclosure in FIGS. 1 to 3 specifies the specific information carried in each signaling process and the tasks that can be completed, and also designs the operations performed by each node that specifies the process.
  • the disclosed satellite network coverage extension method provides a PnP-supporting LEO coverage enhancement mechanism, which can be applied to high-speed mobile scenarios in central and western regions, such as high-speed rail passing through the central and western regions, and coverage enhancement scenarios in remote regions. Specific embodiments of the present disclosure will be described below for the above-mentioned two scenarios.
  • the coverage extension method of the satellite network of the present disclosure activates the satellite nodes through the following steps:
  • A1 The dormant Sa node periodically monitors the Message type signaling with PnP. Considering that the PnP business has long-term periodicity and short-term randomness, according to the business intensity of different LEO satellite coverage areas, Orbit period etc. get different wake-up probabilities for LEO satellites. Listen for PnP signals for a fixed length of time when the LEO satellite is active.
  • the LEO satellite After the LEO satellite receives the PnP mode activation signaling, it verifies the Target Sa node ID information carried in the signaling, establishes synchronization with the adjacent satellite after the verification is successful, and initializes the cache list, pending interest table and routing forwarding on the satellite. published, among which:
  • Cache list described by the two attributes of content name and survival time.
  • the survival time adopts a multi-request delay mechanism, that is, a cache extends the survival time after a hit;
  • pending interest list consists of three attributes: content name, arrival beam and survival time describe. When there are multiple arriving beams carrying the same request, only the beam name is added.
  • the survival time is determined according to the time when the beam angle reaches the boundary angle; the routing and forwarding table: the same as the pending interest table has three attribute descriptions.
  • A3 After the activated LEO satellite is configured, it sends an activation confirmation message to the target area, and the Assisted node performs a content-based communication process after receiving the confirmation message.
  • the information such as the egress IP address and QoS Rule(s) obtained by the UE when the PDU Session is established is erased, and the content-based addressing is completed through the protocol conversion of the Assisted node.
  • the macro base station due to the high mobility of the high-speed rail scene, it is difficult for the small base station to guarantee the success rate of handover, and at the same time, the macro base station cannot provide the required data rate, so LEO satellites are required for coverage
  • the enhancement of the coverage extension method of the satellite network of the present disclosure can be used. Specifically, there is an inter-satellite network between multiple LEO satellites.
  • the Serving node (service node) and the Assisted node (auxiliary node) are the same node and can be placed on the high-speed rail. At the same time, the high-speed rail is under the coverage of the macro base station.
  • the Serving node when the Serving node detects that the macro base station cannot satisfy the data request of the user on the high-speed rail, the Serving node initiates the satellite node wake-up signal Sa node Active Request to the AMF network element of the 5GC, and the Serving node starts to monitor the target LEO The satellite signal is received until the satellite node responds to the signaling Sa node Active Response.
  • the AMF network element When the AMF network element receives the satellite node wake-up signal Sa node Active Request, it retrieves the satellite ephemeris information according to the Source RAN Node ID field in the satellite node wake-up signal Sa node Active Request to match the LEO satellite that can be used to establish a connection , after selecting the LEO satellite, the AMF sends out the satellite node transmission signal Sa node Active Transfer, which can be forwarded through the inter-satellite link or the ground station. It should be noted that the satellite node transmission signal Sa node Active Transfer contains the Identification code information configured as two-way verification and the Message Type information configured as the activation satellite, and the target LEO satellite that is periodically monitored starts to receive the Message Type information.
  • the PnP activation mode indicator is added to the message header and a data request is made to the Serving node.
  • the Serving node has the function of decoding messages at the transport layer. After receiving the PnP mode instruction, it maps the destination TNL address to an Interest message and checks the hit in the CS. If it is not hit, it adds a new item to the PIT and sends an Interest message. After receiving the interest message, the LEO satellite returns the data message to the Serving node. After receiving the data message, the Serving node deletes the PIT corresponding item and stores it in the CS, and encapsulates the data content into a traditional message and returns it to the end user.
  • the scene in remote areas has the characteristics of uneven temporal and spatial distribution of services and extremely backward base station construction on the ground.
  • High data rate services do not always exist, and these areas lack high data rate services.
  • Coverage, covering these areas with ultra-dense base stations will bring high costs.
  • these areas are sparsely populated, and it is extremely cost-effective to build a large number of communication infrastructures.
  • LEO intermittent services are usually used in existing technologies. Therefore, LEO satellites are also required to enhance coverage, and the method for expanding coverage of a satellite network disclosed in the present disclosure can be used to solve the problem in this scenario.
  • ground base stations which can only meet basic communication needs.
  • ground base stations cannot meet the needs of a large number of end users.
  • the ground base station notifies the core network to trigger Satellite activated PnP process.
  • the traditional ground base station perceives the surge of data requests reaching the threshold, for example, through the PDU Session, it sends the satellite node wake-up signal Sa node Active Request to the AMF, and wakes up the Source RAN Node in the signal Sa node Active Request according to the satellite node
  • the ID information identifies the geographic area and is combined with the ephemeris information to determine the selected active satellites.
  • periodic broadcast signaling is sent to activate the Assisted node.
  • the Assisted node replies with a notify message carrying a random code and channel state information CSI.
  • the Serving node specifies that the Assisted node sends a Confirm message carrying a random code and an Identification code to complete the activation.
  • the AMF After receiving the Sa node Active Request signaling, the AMF sends the satellite node transmission signaling Sa node Active Transfer to the selected satellite, and carries the Identification code, Message Type, and Target Sa node ID to verify the selected Sa node (satellite node).
  • the Sa node After the Sa node is activated, it sends the satellite node response signal Sa node Active Response to the Assisted node, and the satellite node response signal Sa node Active Response includes node verification information.
  • the end user and the satellite complete the conversion between IP-based addressing and content-based addressing through the Assisted node.
  • the satellite network coverage expansion method disclosed in the present disclosure aims at the two scenarios of high-speed rail passing through the central and western regions, and the coverage enhancement scenario in remote areas, and can quickly provide service satellite connection establishment process mechanism, and provides specific details in the process mechanism.
  • a protocol stack compatible with NR is adopted on the UE side, which has the data transmission function of the physical layer of NR, as well as link control, flow mapping, and packet segmentation and reassembly of the L2 layer. At the same time, it also has the function of establishing a connection at the transport layer, and can establish a logical link with the Assisted node; the Assisted node has the function of protocol stack replacement, can establish a physical and logical link with the terminal UE, and also has ATM with the satellite, etc.
  • the ability of the system to establish a connection, the addressing and switching at the high level is adapted to the content-based addressing method proposed in this disclosure on the LEO satellite, and the multi-modal protocol stack compatible with the satellite and NR is adopted at the Assisted node side :
  • the lower layer completes functions such as satellite signal frequency, coding system, and error checking at the lower layer through the conversion of L2/PHY and ATM;
  • the upper layer completes content-based routing in the network through the conversion of SCTP, UDP, TCP ⁇ IP and Content Layer And to achieve a fast response when the node is initially established.
  • a protocol stack based on content addressing is used on the LEO satellite to establish a physical and logical link with the Serving node.
  • the following describes the satellite network coverage extension device provided by the present disclosure.
  • the satellite network coverage extension device described below and the satellite network coverage extension method described above can be referred to in correspondence.
  • the coverage extension device of the satellite network of the present disclosure is described below in conjunction with FIG. 7.
  • the device is applied to the ground side, and the ground side includes a Serving node (service node) and an Assisted node (assistant node), and the Serving node is a serving base station (Base Station, BS) node, the Assisted node is a star-ground auxiliary BS node, the Serving node and the Assisted node are located in the same physical location area, for example, the Serving node is located in a community, the Assisted node is also located in the community, and each Assisted node is specifically located in a sub-area of the community within range.
  • BS Base Station
  • the Serving node communicates with the home network side, such as 5GC (5G Core Network), and there is at least one Assisted node that communicates with the Serving node.
  • the Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side.
  • the home network side also communicates with the Sa node.
  • the device shown in Figure 7 applied to the ground side includes:
  • the first obtaining module 100 is configured to monitor the traffic of the UE within its coverage through the Serving node.
  • the first sending module 200 is configured such that when the traffic exceeds the preset value, the Serving node sends the satellite node wake-up signaling and the location information of the Serving node to the AMF network element of the 5GC, and sends a signal configured to activate the Assisted node to the Assisted node. Secondary request signaling for .
  • the first activation module 300 is configured to activate the Assisted node based on the auxiliary node request signaling, and monitor the satellite side.
  • the second activation module 400 is configured to activate the content-based mode after the Assisted node receives the Sa node response signaling sent by the activated satellite side.
  • the activated satellite side is at least one Sa node.
  • the content-based mode is to set the Assisted node to PnP mode.
  • the transport layer message is changed to the source port number unchanged, and the destination port is changed to the requested content name.
  • the Assisted node integrates the message into the form of a request message and sends it to the Sa node on the satellite side.
  • both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
  • the satellite network coverage extension device of the present disclosure is described below in conjunction with FIG. 8.
  • the device is applied to the home network side, such as 5GC.
  • the home network side communicates with the satellite side and the ground side, and the ground side includes Serving node (service node) and Assisted node.
  • Serving node is the serving BS node
  • Assisted node is the star-ground auxiliary BS node
  • Serving node and Assisted node are located in the same physical location area, for example, Serving node is in a community, Assisted node is also located in the community, and each The Assisted node is specifically located within the sub-area of the cell.
  • the Serving node communicates with the home network side, and there is at least one Assisted node that communicates with the Serving node.
  • the Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side, and the satellite side includes several Sa nodes.
  • the home network side also communicates with the Sa node.
  • the device shown in Figure 8 applied to the home network side includes:
  • the second obtaining module 500 is configured to obtain the satellite node wake-up signaling of the Serving node and the location information reported by the Serving node through the AMF network element of the 5GC.
  • the second sending module 600 is configured to determine the Sa node that can establish a communication link with the Assisted node according to the location information and ephemeris information through the AMF network element, and send the satellite node to the Sa node that can establish a communication link with the Assisted node Transmission signaling. It should be noted that the Sa node that can establish a communication link with the Assisted node is more than one Sa node.
  • both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
  • the device is applied to the satellite side.
  • the satellite side includes several Sa nodes (satellite nodes), and the Sa nodes are all connected to the home network side such as 5GC and the ground side.
  • the ground side Including Serving node (service node) and Assisted node (auxiliary node), Serving node is the serving base station (Base Station, BS) node, Assisted node is the star-ground auxiliary BS node, Serving node and Assisted node are located in the same physical location area, For example, the Serving node is located in a cell, the Assisted node is also located in the cell, and each Assisted node is specifically located in the sub-area of the cell. Among them, the Serving node communicates with the home network side, there is at least one Assisted node and all communicate with the Serving node, and the Assisted node also communicates with some Sa nodes.
  • the device applied to the satellite side shown in Figure 9
  • the third obtaining module 700 is configured to obtain the satellite node transmission signaling of the AMF of 5GC through one or more Sa nodes, and activate these Sa nodes.
  • the satellite node transmission signaling contains the position information of the Serving node, and one of them.
  • the Assisted node and the Sa node that communicate with the Serving node establish a communication link based on the satellite node transmission signaling, and the Assisted node that establishes a communication link with the Sa node is determined through the competition of the Random Code.
  • the third sending module 800 is configured to send a satellite node transmission signaling to an Assisted node within the range of the location information contained in the satellite node transmission letter after the Sa node is activated, and the satellite node response signaling carries a signal configured to respond to Sa The Identification code for node verification.
  • both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
  • the coverage expansion device of the satellite network disclosed in the present disclosure provides a signaling process for turning LEO satellites from a dormant state to an active state and a PnP connection establishment process supporting fast services, forming a network dynamic wide-area coverage expansion mechanism, through ground side
  • the service node monitors the traffic of the terminal user, and when the traffic exceeds the preset value, initiates satellite node wake-up signaling and the location information of the current service node to the home network side, and sends an auxiliary node request signaling to the auxiliary node on the ground side , to activate the auxiliary node and monitor the satellite nodes on the satellite side; the home network side then determines satellite nodes that can establish communication links with the auxiliary node based on the location information and ephemeris information, and sends satellite nodes to these satellite nodes that can establish communication links.
  • the coverage expansion device of the satellite network disclosed in the present disclosure realizes the integration of the ground network and the satellite network, enhances the coverage of the LEO satellite network, and can be applied to high-speed mobile scenarios in the central and western regions. For example, high-speed rail passes through the central and western regions, and coverage enhancement scenarios in remote areas.
  • FIG. 10 illustrates a schematic diagram of the physical structure of an electronic device.
  • the electronic device may include: a processor (processor) 810, a communication interface (CommunicationsInterface) 820, a memory (memory) 830, and a communication bus 840, wherein , the processor 810 , the communication interface 820 , and the memory 830 communicate with each other through the communication bus 840 .
  • the processor 810 can call the logic instructions in the memory 830 to execute the coverage extension method of the satellite network, and the method includes the following steps:
  • the service node monitors the traffic of the user equipment within its coverage
  • the service node When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
  • auxiliary node request signaling Based on the auxiliary node request signaling, activate the auxiliary node and monitor the satellite side;
  • the auxiliary node After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activate the content-based mode; wherein, the content-based mode is to set the auxiliary node into a plug-and-play mode , and, the assistant node integrates the message into a form of request message and sends it to the satellite side.
  • the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them is related to the service node
  • the auxiliary node in communication connection and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
  • the satellite node After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
  • the above logic instructions in the memory 830 may be implemented in the form of software functional units and when sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disk or optical disk and other media that can store program codes.
  • the present disclosure also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can Carry out the coverage expansion method of the satellite network provided by above-mentioned each method, this method comprises the following steps:
  • the service node monitors the traffic of the user equipment within its coverage
  • the service node When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
  • the auxiliary node After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activate the content-based mode; wherein, the content-based mode is to set the auxiliary node into a plug-and-play mode , and, the assistant node integrates the message into a form of request message and sends it to the satellite side.
  • the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them is related to the service node
  • the auxiliary node in communication connection and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
  • the satellite node After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
  • the present disclosure also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the satellite network coverage extension method provided by the above methods, the The method includes the following steps:
  • the service node monitors the traffic of the user equipment within its coverage
  • the service node When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
  • auxiliary node request signaling Based on the auxiliary node request signaling, activate the auxiliary node and monitor the satellite side;
  • the auxiliary node After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activate the content-based mode; wherein, the content-based mode is to set the auxiliary node into a plug-and-play mode , and, the assistant node integrates the message into a form of request message and sends it to the satellite side.
  • the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them is related to the service node
  • the auxiliary node in communication connection and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
  • the satellite node After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.
  • each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware.
  • the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.
  • steps may be reordered, added or deleted using the various forms of flow shown above.
  • each step described in the present disclosure may be executed in parallel, sequentially, or in a different order, as long as the desired result of the technical solution disclosed in the present disclosure can be achieved, no limitation is imposed herein.

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Abstract

Provided are a coverage extension method and apparatus for a satellite network, which method and apparatus relate to the technical field of satellite communications. The method comprises the following steps: a service node monitoring traffic of a user equipment within a coverage range thereof (S100); when the traffic exceeds a preset value, the service node sending satellite node wake-up signaling and position information to a home network side, and sending, to an auxiliary node, auxiliary node request signaling configured to activate the auxiliary node (S200); on the basis of the auxiliary node request signaling, activating the auxiliary node, and monitoring a satellite side (S300); and after the auxiliary node receives satellite node response signaling sent by the activated satellite side, activating a content-based mode (S400).

Description

一种卫星网络的覆盖扩展方法及装置A satellite network coverage extension method and device 技术领域technical field
本公开涉及卫星通信技术领域，尤其涉及一种卫星网络的覆盖扩展方法及装置。The present disclosure relates to the technical field of satellite communication, and in particular to a method and device for coverage extension of a satellite network.
背景技术Background technique
近年来，随着地面移动通信迅速发展，从1G到5G由最初的模拟信号的通信转变为数字信号的通信，从业务来看由语音通信逐渐转变为数据通信。为了满足终端越来越高的数据速率的需求，移动通信技术不变革新地面基站越加密集，在获得的极高的数据速率的同时也带来了切换频繁、基建成本高昂等问题。In recent years, with the rapid development of terrestrial mobile communications, from 1G to 5G, the communication of the initial analog signal has been transformed into the communication of digital signal, and from the perspective of business, voice communication has gradually changed to data communication. In order to meet the increasingly higher data rate requirements of terminals, mobile communication technology does not change, and new ground base stations are denser. While obtaining extremely high data rates, it also brings problems such as frequent switching and high infrastructure costs.
相较于地面移动通信，卫星通信具有覆盖范围广、受地面影响小的特点，近年来在基础通信保障、应急通信以及灾害通信的场景中得到了广泛的应用。然而卫星通信也存在技术较为独立、与地面移动网络缺少交互融合的问题，难以充分发挥地面网络和卫星网络两者的优势，卫星网络仅作为地面网络的应急补充来保障基础的通信业务；同时，随着卫星技术的发展，单星的吞吐量逐步提升，根据星链计划的数据，目前单星已经至少达到20Gbps的吞吐量。同时卫星数据业务在地面网络覆盖不足的中西部地区、荒漠海洋地区具有良好的应用前景，然而这些地区的业务也存在时空分布不均的问题，因此能够解决偏远地区的覆盖问题的覆盖机制是目前亟待解决的重要课题。Compared with terrestrial mobile communication, satellite communication has the characteristics of wide coverage and little impact on the ground. In recent years, it has been widely used in basic communication guarantee, emergency communication and disaster communication scenarios. However, satellite communication also has the problems of relatively independent technology and lack of interaction and integration with the ground mobile network. It is difficult to give full play to the advantages of both the ground network and the satellite network. The satellite network is only used as an emergency supplement to the ground network to ensure basic communication services; at the same time, With the development of satellite technology, the throughput of a single satellite is gradually increasing. According to the data of the Starlink project, the throughput of a single satellite has reached at least 20Gbps. At the same time, satellite data services have good application prospects in the central and western regions and desert ocean areas where the ground network coverage is insufficient. However, the services in these areas also have the problem of uneven temporal and spatial distribution. Therefore, the coverage mechanism that can solve the coverage problem in remote areas is currently the important issues to be resolved.
发明内容Contents of the invention
本公开提供一种卫星网络的覆盖扩展方法及装置，用以解决现有技术中地面网络覆盖不足的偏远地区存在的业务时空分布不均的缺陷，实现了地面网络与卫星网络相融合，通过LEO(Low Earth Orbit，近地轨道)卫星网络对地面网络进行覆盖的增强。The disclosure provides a satellite network coverage expansion method and device, which are used to solve the defect of uneven temporal and spatial distribution of services in remote areas with insufficient ground network coverage in the prior art, and realize the integration of the ground network and the satellite network. Through LEO (Low Earth Orbit, Low Earth Orbit) satellite network enhances the coverage of the ground network.
本公开提供一种卫星网络的覆盖扩展方法，应用于地面侧，所述地面 侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及归属网络侧通信连接，所述辅助节点与同所述归属网络侧建立通信的卫星侧通信连接，该方法包括以下步骤：The present disclosure provides a coverage extension method of a satellite network, which is applied to the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, and the service node and the auxiliary node As well as a communication connection on the home network side, the auxiliary node communicates with the satellite side that establishes communication with the home network side. The method includes the following steps:
所述服务节点监听其覆盖范围内的用户设备的流量；The service node monitors the traffic of the user equipment within its coverage;
当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令；When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧；Based on the auxiliary node request signaling, activate the auxiliary node and monitor the satellite side;
当被激活的所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式；其中，所述基于内容的模式为将所述辅助节点置为即插即用模式，且，所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。After the activated auxiliary node receives the satellite node response signaling sent by the activated satellite side, the content-based mode is activated; wherein, the content-based mode is to set the auxiliary node to plug and play The ready-to-use mode, and the auxiliary node integrates the message into a form of request message and sends it to the satellite side.
根据本公开提供的卫星网络的覆盖扩展方法，所述基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧，具体包括：According to the satellite network coverage extension method provided in the present disclosure, the activation of the auxiliary node based on the auxiliary node request signaling to monitor the satellite side specifically includes:
当所述辅助节点不止一个时，多个所述辅助节点通过随机码竞争所述辅助节点请求信令，且，有且仅有一个所述辅助节点基于竞争获取所述辅助节点请求信令，并基于所述辅助节点请求信令进行激活。When there is more than one auxiliary node, multiple auxiliary nodes compete for the auxiliary node request signaling through random codes, and there is only one auxiliary node that obtains the auxiliary node request signaling based on competition, and Activation is performed based on the secondary node request signaling.
根据本公开提供的卫星网络的覆盖扩展方法，所述基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧，相应的，在所述辅助节点不止一个时，具体包括以下步骤：According to the satellite network coverage extension method provided in the present disclosure, the auxiliary node is activated based on the auxiliary node request signaling, and the satellite side is monitored. Correspondingly, when there is more than one auxiliary node, it specifically includes the following step:
所述辅助节点接收到所述辅助节点请求信令后，随机生成其对应的随机码，并向所述服务节点发送辅助节点通知信令；其中，所述辅助节点通知信令中携带有所述随机码、身份标识码以及信道状态信息；After receiving the auxiliary node request signaling, the auxiliary node randomly generates a corresponding random code, and sends an auxiliary node notification signaling to the serving node; wherein, the auxiliary node notification signaling carries the Random code, identity code and channel state information;
所述服务节点基于所述辅助节点通知信令中的所述信道状态信息，确定其中一个所述辅助节点作为待激活的辅助节点，并向所述待激活的辅助节点发送辅助节点确认信令；其中，所述辅助节点确认信令中携带有所述随机码；The serving node determines one of the auxiliary nodes as an auxiliary node to be activated based on the channel state information in the auxiliary node notification signaling, and sends an auxiliary node confirmation signaling to the auxiliary node to be activated; Wherein, the auxiliary node confirmation signaling carries the random code;
基于所述随机码，所述待激活的辅助节点获取所述辅助节点确认信令，并基于所述辅助节点请求信令以及所述辅助节点确认信令进行激活，监听所述卫星侧。Based on the random code, the auxiliary node to be activated acquires the auxiliary node confirmation signaling, activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling, and monitors the satellite side.
根据本公开提供的卫星网络的覆盖扩展方法，所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式，具体包括：According to the coverage extension method of the satellite network provided in the present disclosure, after the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activates the content-based mode, specifically including:
所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，基于所述卫星节点响应信令中携带的对所述卫星节点进行验证的身份标识码，对所述卫星节点进行验证，并在验证成功后直接激活基于内容的模式。After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, based on the identity code for verifying the satellite node carried in the satellite node response signaling, the satellite node Validate and activate content-based mode directly after successful validation.
本公开还提供一种卫星网络的覆盖扩展方法，应用于归属网络侧，所述归属网络侧与卫星侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星侧通信连接，所述卫星侧包括若干卫星节点，该方法包括以下步骤：The present disclosure also provides a satellite network coverage extension method, which is applied to the home network side, and the home network side communicates with the satellite side and the ground side, and the ground side includes a service node and an auxiliary node, and the service node is connected to the ground side. The auxiliary node is located in the same area, the service node is communicatively connected with the auxiliary node and the home network side, the auxiliary node is communicatively connected with the satellite side, and the satellite side includes several satellite nodes, the method includes the following step:
获取所述服务节点的卫星节点唤醒信令以及位置信息；Obtain satellite node wake-up signaling and location information of the service node;
根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传输信令。Determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and ephemeris information, and send a satellite node transmission signaling to the satellite node capable of establishing a communication link with the auxiliary node .
本公开还提供一种卫星网络的覆盖扩展方法，应用于卫星侧，所述卫星侧包括若干卫星节点，所述卫星节点与归属网络侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星节点通信连接，该方法包括以下步骤：The present disclosure also provides a coverage extension method of a satellite network, which is applied to the satellite side, and the satellite side includes several satellite nodes, and the satellite nodes communicate with the home network side and the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, the service node is communicatively connected with the auxiliary node and the home network side, and the auxiliary node is communicatively connected with the satellite node, the method includes the following steps :
所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；The satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them communicates with the service node The auxiliary node and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点响应信令；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
根据本公开提供的卫星网络的覆盖扩展方法，所述卫星节点获取所述 归属网络侧的卫星节点传输信令，并进行激活，具体包括：According to the coverage extension method of the satellite network provided in the present disclosure, the satellite node obtains the transmission signaling of the satellite node on the home network side and activates it, specifically including:
当所述地面侧的所述辅助节点不止一个时，所述服务节点向所述辅助节点发送辅助节点请求信令；其中，所述辅助节点请求信令是在所述服务节点监听到其覆盖范围内的用户设备的流量超出预设值时生成的；When there is more than one auxiliary node on the ground side, the service node sends an auxiliary node request signaling to the auxiliary node; wherein, the auxiliary node request signaling is when the service node monitors its coverage Generated when the traffic of the user equipment within exceeds the preset value;
所述辅助节点接收到所述辅助节点请求信令后，随机生成其对应的随机码，并向所述服务节点发送辅助节点通知信令；其中，所述辅助节点通知信令中携带有所述随机码、身份标识码以及信道状态信息；After receiving the auxiliary node request signaling, the auxiliary node randomly generates a corresponding random code, and sends an auxiliary node notification signaling to the serving node; wherein, the auxiliary node notification signaling carries the Random code, identity code and channel state information;
所述服务节点基于所述辅助节点通知信令中的所述信道状态信息，确定其中一个所述辅助节点作为待激活的辅助节点，并向所述待激活的辅助节点发送辅助节点确认信令；其中，所述辅助节点确认信令中携带有所述随机码；The serving node determines one of the auxiliary nodes as an auxiliary node to be activated based on the channel state information in the auxiliary node notification signaling, and sends an auxiliary node confirmation signaling to the auxiliary node to be activated; Wherein, the auxiliary node confirmation signaling carries the random code;
基于所述随机码，所述待激活的辅助节点获取所述辅助节点确认信令，并基于所述辅助节点请求信令以及所述辅助节点确认信令进行激活；其中，被激活的所述辅助节点接收所述卫星节点响应信令。Based on the random code, the auxiliary node to be activated obtains the auxiliary node confirmation signaling, and activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling; wherein, the activated auxiliary node The node receives the satellite node response signaling.
本公开还提供一种卫星网络的覆盖扩展装置，应用于地面侧，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及归属网络侧通信连接，所述辅助节点与同所述归属网络侧建立通信的卫星侧通信连接，该装置包括：The present disclosure also provides a satellite network coverage extension device, which is applied to the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, and the service node and the auxiliary node are located in the same area. The communication connection between the node and the home network side, and the communication connection between the auxiliary node and the satellite side establishing communication with the home network side, the device includes:
第一获取模块，被配置为通过所述服务节点监听其覆盖范围内的用户设备的流量；The first obtaining module is configured to monitor the traffic of the user equipment within its coverage through the service node;
第一发送模块，被配置为当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令；The first sending module is configured to: when the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends a signal configured to activate to the assistant node secondary node request signaling for said secondary node;
第一激活模块，被配置为基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧；The first activation module is configured to activate the auxiliary node and monitor the satellite side based on the auxiliary node request signaling;
第二激活模块，被配置为当所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式；其中，所述基于内容的模式为将所述辅助节点置为即插即用模式，且，所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。The second activation module is configured to activate the content-based mode after the auxiliary node receives the activated satellite node response signaling sent by the satellite side; wherein the content-based mode is to use the auxiliary The node is set to the plug-and-play mode, and the auxiliary node integrates the message into a form of request message and sends it to the satellite side.
本公开还提供一种卫星网络的覆盖扩展装置，所述归属网络侧与卫星 侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星侧通信连接，所述卫星侧包括若干卫星节点，该装置包括：The present disclosure also provides a satellite network coverage extension device, the home network side communicates with the satellite side and the ground side, the ground side includes a service node and an auxiliary node, and the service node and the auxiliary node are located in the same area The service node is communicatively connected to the auxiliary node and the home network side, the auxiliary node is communicatively connected to the satellite side, the satellite side includes several satellite nodes, and the device includes:
第二获取模块，被配置为获取所述服务节点的卫星节点唤醒信令以及位置信息；The second acquisition module is configured to acquire satellite node wake-up signaling and location information of the service node;
第二发送模块，被配置为根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传输信令。The second sending module is configured to determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and the ephemeris information, and send a message to the satellite node capable of establishing a communication link with the auxiliary node The satellite node sends the satellite node transmission signaling.
本公开还提供一种卫星网络的覆盖扩展装置，应用于卫星侧，所述卫星侧包括若干卫星节点，所述卫星节点与归属网络侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星节点通信连接，该装置包括：The present disclosure also provides a satellite network coverage expansion device, which is applied to the satellite side, and the satellite side includes several satellite nodes, and the satellite nodes are in communication connection with the home network side and the ground side. node, the service node and the auxiliary node are located in the same area, the service node is communicatively connected to the auxiliary node and the home network side, the auxiliary node is communicatively connected to the satellite node, and the device includes:
第三获取模块，被配置为通过所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；The third obtaining module is configured to obtain and activate the satellite node transmission signaling on the home network side through the satellite node; wherein the satellite node transmission signaling includes the location information of the service node, One of the auxiliary nodes that is communicatively connected to the service node establishes a communication link with the satellite node based on the satellite node transmission signaling, and the auxiliary node that establishes the communication link with the satellite node uses a random code determined by competition;
第三发送模块，被配置为在所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点传输信令；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。The third sending module is configured to send a satellite node transmission signaling to the auxiliary node within the range of location information indicated in the satellite node transmission signaling after the satellite node is activated; wherein, the satellite node responds The signaling carries an identity code configured to verify the satellite node.
本公开还提供一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现如上述任一种所述卫星网络的覆盖扩展方法的步骤。The present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, it realizes any one of the satellite networks described above. Steps to override the extension method.
本公开还提供一种非暂态计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现如上述任一种所述卫星网络的覆盖扩展方法的步骤。The present disclosure also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the satellite network coverage extension methods described above are implemented.
本公开还提供一种计算机程序产品，包括计算机程序，所述计算机程 序被处理器执行时实现如上述任一种所述卫星网络的覆盖扩展方法的步骤。The present disclosure also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of any one of the satellite network coverage extension methods described above are implemented.
本公开提供的卫星网络的覆盖扩展方法及装置，提供了一种将LEO卫星从休眠态转到激活态的信令流程以及支持快速服务的PnP连接建立流程，形成网络动态广域覆盖扩展机制，通过地面侧的服务节点监听终端用户的流量，并在流量超过预设值时，向归属网络侧发起卫星节点唤醒信令以及当前服务节点所在的位置信息，以及，向地面侧的辅助节点发送辅助节点请求信令，用以激活辅助节点并监听卫星侧的卫星节点；归属网络侧再基于位置信息以及星历信息确定能够与辅助节点建立通信链路的卫星节点，向这些能够建立通信链路卫星节点发送卫星节点传输信令，并基于卫星节点传输信令激活这些卫星节点，基于随机码竞争从而被激活的辅助节点会接收到被激活的卫星节点发送的卫星节点响应信令后，激活基于内容的模式，基于内容的模式为支持快速服务的PnP模式，本公开的卫星网络的覆盖扩展装置实现了地面网络与卫星网络相融合，对LEO卫星网络进行覆盖的增强，能够应用于中西部地区的高速移动场景，如高铁途径中西部地区，以及边远地区的覆盖增强场景。The satellite network coverage expansion method and device provided by the present disclosure provide a signaling process for switching LEO satellites from a dormant state to an active state and a PnP connection establishment process supporting fast services, forming a network dynamic wide-area coverage expansion mechanism, The service node on the ground side monitors the traffic of the end user, and when the traffic exceeds the preset value, initiates satellite node wake-up signaling and the location information of the current service node to the home network side, and sends assistance to the auxiliary node on the ground side The node requests signaling to activate the auxiliary node and monitor the satellite nodes on the satellite side; the home network side then determines the satellite nodes that can establish a communication link with the auxiliary node based on the location information and ephemeris information, and sends these satellite nodes that can establish a communication link The node sends satellite node transmission signaling, and activates these satellite nodes based on the satellite node transmission signaling. Based on the random code competition, the activated auxiliary node will receive the satellite node response signaling sent by the activated satellite node, and activate the content-based The content-based mode is a PnP mode that supports fast service. The satellite network coverage expansion device disclosed in the present disclosure realizes the integration of the ground network and the satellite network, enhances the coverage of the LEO satellite network, and can be applied to the central and western regions. High-speed mobile scenarios, such as high-speed rail passing through the central and western regions, and coverage enhancement scenarios in remote areas.
应当理解，本部分所描述的内容并非旨在标识本公开的实施例的关键或重要特征，也不用于限制本公开的范围。本公开的其它特征将通过以下的说明书而变得容易理解。It should be understood that what is described in this section is not intended to identify key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will be readily understood through the following description.
附图说明Description of drawings
为了更清楚地说明本公开或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the present disclosure or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the present invention For some disclosed embodiments, those skilled in the art can also obtain other drawings based on these drawings without any creative work.
图1是本公开提供的卫星网络的覆盖扩展方法应用于地面侧的流程示意图；FIG. 1 is a schematic flow diagram of the application of the satellite network coverage expansion method provided by the present disclosure to the ground side;
图2是本公开提供的卫星网络的覆盖扩展方法应用于归属网络侧的流程示意图；FIG. 2 is a schematic flow diagram of the application of the satellite network coverage extension method provided by the present disclosure to the home network side;
图3是本公开提供的卫星网络的覆盖扩展方法应用于卫星侧的流程 示意图；Fig. 3 is the flow schematic diagram that the coverage extension method of the satellite network provided by the present disclosure is applied to the satellite side;
图4为本公开提供的卫星网络的覆盖扩展方法中各个节点进行信令交互时的示意图；FIG. 4 is a schematic diagram of each node performing signaling interaction in the coverage extension method of the satellite network provided by the present disclosure;
图5是本公开提供的卫星网络的覆盖扩展方法应用于高速移动场景下的示意图；5 is a schematic diagram of a satellite network coverage extension method provided by the present disclosure applied to a high-speed mobile scenario;
图6是本公开提供的卫星网络的覆盖扩展方法应用于边远地区场景下的示意图；FIG. 6 is a schematic diagram of a satellite network coverage extension method provided by the present disclosure applied to a scene in a remote area;
图7是本公开提供的卫星网络的覆盖扩展装置应用于地面侧的结构示意图；FIG. 7 is a schematic structural diagram of a satellite network coverage extension device provided by the present disclosure applied to the ground side;
图8是本公开提供的卫星网络的覆盖扩展装置应用于归属网络侧的结构示意图；FIG. 8 is a schematic structural diagram of a satellite network coverage extension device provided by the present disclosure applied to the home network side;
图9是本公开提供的卫星网络的覆盖扩展装置应用于卫星侧的结构示意图；FIG. 9 is a schematic structural diagram of the satellite network coverage extension device provided by the present disclosure applied to the satellite side;
图10是本公开提供的电子设备的结构示意图。Fig. 10 is a schematic structural diagram of an electronic device provided by the present disclosure.
具体实施方式Detailed ways
为使本公开的目的、技术方案和优点更加清楚，下面将结合本公开中的附图，对本公开中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the technical solutions in the present disclosure will be clearly and completely described below in conjunction with the drawings in the present disclosure. Apparently, the described embodiments are part of the embodiments of the present disclosure , but not all examples. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.
下面结合图1描述本公开的卫星网络的覆盖扩展方法，该方法应用于地面侧，地面侧包括Serving node(服务节点)和Assisted node(辅助节点)，Serving node为正在服务的基站(Base Station，BS)节点，Assisted node为星地辅助BS节点，Serving node和Assisted node位于同一物理位置区域，例如Serving node处于一个小区，Assisted node也位于该小区，并且各个Assisted node具体的位于该小区的子区域范围内。其中，Serving node与归属网络侧例如5GC(5G Core Network)通信连接，Assisted node存在至少一个并且均与Serving node通信连接，Assisted node还均与安装在卫星侧的部分Sa node(卫星节点)通信连接，归属 网络侧也与Sa node通信连接。Below in conjunction with Fig. 1, the coverage extension method of the satellite network of the present disclosure is described, the method is applied to the ground side, and the ground side includes Serving node (service node) and Assisted node (assistant node), and Serving node is a serving base station (Base Station, BS) node, the Assisted node is a star-ground auxiliary BS node, the Serving node and the Assisted node are located in the same physical location area, for example, the Serving node is located in a community, the Assisted node is also located in the community, and each Assisted node is specifically located in a sub-area of the community within range. Among them, the Serving node communicates with the home network side, such as 5GC (5G Core Network), and there is at least one Assisted node that communicates with the Serving node. The Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side. , the home network side also communicates with the Sa node.
在本实施例中，Sa node安装在LEO卫星上。In this embodiment, the Sa node is installed on a LEO satellite.
上述的各个节点上均具有数据缓存单元，数据缓存单元能够储存请求报文来完成路由转发。Each of the above-mentioned nodes has a data cache unit, and the data cache unit can store the request message to complete routing and forwarding.
图1所示的应用于地面侧的该方法包括以下步骤：The method shown in Figure 1 applied to the ground side includes the following steps:
S100、Serving node监听其覆盖范围内的用户设备(User Equipment，UE)的流量。S100. The Serving node monitors traffic of user equipment (User Equipment, UE) within its coverage.
S200、当流量超出预设值时，serving node向5GC的接入及移动性管理功能(Access and Mobility Management Function，AMF)网元发送卫星节点唤醒信令以及Serving node的位置信息，以及，向Assisted node发送被配置为激活Assisted node的辅助节点请求信令。S200. When the traffic exceeds the preset value, the serving node sends the satellite node wake-up signaling and the location information of the Serving node to the access and mobility management function (Access and Mobility Management Function, AMF) network element of the 5GC, and sends the Assisted The node sends the secondary node request signaling configured to activate the Assisted node.
S300、基于辅助节点请求信令，激活Assisted node，监听卫星侧。S300. Based on the auxiliary node request signaling, activate the assisted node and monitor the satellite side.
S400、当被激活的Assisted node接收到被激活的卫星侧发送的Sa node响应信令后，激活基于内容的模式。被激活的卫星侧为至少一个Sa node，基于内容的模式为将Assisted node置为即插即用(Plug-and-Play，PnP)模式，UE接收到后更改传输层报文变为源端口号不变，目的端口改为请求的内容名称，且，Assisted node将报文整合为请求报的形式并向卫星侧的Sa node发送。S400. After the activated Assisted node receives the Sa node response signaling sent by the activated satellite side, activate the content-based mode. The activated satellite side is at least one Sa node, and the content-based mode is to set the Assisted node to plug-and-play (Plug-and-Play, PnP) mode. After receiving it, the UE changes the transport layer message to the source port number No change, the destination port is changed to the content name of the request, and the Assisted node integrates the message into the form of a request message and sends it to the Sa node on the satellite side.
可以理解的是，未被激活的Assisted node以及Sa node均可以设置为休眠状态，以减少能耗。It is understandable that both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
考虑到存在多个Assisted node存在，图1所示的应用于地面侧的该方法中，Assisted node通过Random Code(随机码)进行竞争激活，且，有且仅有一个Assisted node基于竞争获取辅助节点请求信令，并基于辅助节点请求信令进行激活，基于竞争的Assisted node激活包括以下步骤：Considering that there are multiple Assisted nodes, in the method applied to the ground side shown in Figure 1, the Assisted node is activated through competition through Random Code (random code), and there is one and only one Assisted node to obtain an auxiliary node based on competition Request signaling, and activate based on the auxiliary node request signaling, the competition-based Assisted node activation includes the following steps:
B1、Assisted node向周围广播带有PnP(Plug and Play，即插即用)Message type(消息类型)以及Indentification code(身份识别码)的信令。B1. Assisted node broadcasts signaling with PnP (Plug and Play) Message type (message type) and Identification code (identification code) to the surrounding.
B2、Assisted node接收到辅助节点请求信令后，随机生成其对应的一个Random Code，并向Serving node发送辅助节点通知信令，辅助节点通知信令中携带有Random Code、Indentification code以及信道状态 信息(Channel State Information，CSI)。B2. After the Assisted node receives the auxiliary node request signaling, it randomly generates a corresponding Random Code, and sends the auxiliary node notification signaling to the Serving node. The auxiliary node notification signaling carries the Random Code, Identification code and channel status information (Channel State Information, CSI).
B3、Serving node基于辅助节点通知信令中的CSI，确定其中一个Assisted node作为待激活的Assisted node，并向待激活的Assisted node发送辅助节点确认信令，Assisted node确认信令中携带有Random Code。B3. Based on the CSI in the auxiliary node notification signaling, the Serving node determines one of the Assisted nodes as the Assisted node to be activated, and sends an auxiliary node confirmation signaling to the Assisted node to be activated. The Assisted node confirmation signaling carries a Random Code .
B4、基于Random Code，待激活的Assisted node获取辅助节点确认信令，并基于辅助节点请求信令以及辅助节点确认信令进行激活，监听卫星侧的Sa node，完成对应的辅助节点激活流程。B4. Based on the Random Code, the Assisted node to be activated obtains the auxiliary node confirmation signaling, activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling, monitors the Sa node on the satellite side, and completes the corresponding auxiliary node activation process.
需要说明的是，在图1所示的应用于地面侧的该方法中，Assisted node接收到被激活的卫星侧发送的卫星节点响应信令后，不会向卫星侧的Sa node回复确认信息，而是直接再激活基于内容的模式。具体的，是基于卫星节点响应信令中携带的对Sa node进行验证的Indentification code，对Sa node进行验证，并在验证成功后直接激活基于内容的模式。It should be noted that in the method applied to the ground side shown in Figure 1, after the Assisted node receives the satellite node response signaling sent by the activated satellite side, it will not reply to the Sa node on the satellite side for confirmation. Instead, reactivate the content-based mode directly. Specifically, the Sa node is verified based on the Identification code carried in the satellite node response signaling to verify the Sa node, and the content-based mode is directly activated after the verification is successful.
下面结合图2描述本公开的卫星网络的覆盖扩展方法，该方法应用于归属网络侧，例如5GC，归属网络侧与卫星侧以及地面侧通信连接，地面侧包括Serving node(服务节点)和Assisted node(辅助节点)，Serving node为正在服务的BS节点，Assisted node为星地辅助BS节点，Serving node和Assisted node位于同一物理位置区域，例如Serving node处于一个小区，Assisted node也位于该小区，并且各个Assisted node具体的位于该小区的子区域范围内。其中，Serving node与归属网络侧通信连接，Assisted node存在至少一个并且均与Serving node通信连接，Assisted node还均与安装在卫星侧的部分Sa node(卫星节点)通信连接，卫星侧包括若干Sa node，归属网络侧也与Sa node通信连接。The coverage expansion method of the satellite network of the present disclosure is described below in conjunction with FIG. 2. The method is applied to the home network side, such as 5GC. The home network side communicates with the satellite side and the ground side, and the ground side includes Serving node (service node) and Assisted node. (Auxiliary node), Serving node is the serving BS node, Assisted node is the star-ground auxiliary BS node, Serving node and Assisted node are located in the same physical location area, for example, Serving node is in a community, Assisted node is also located in the community, and each The Assisted node is specifically located within the sub-area of the cell. Among them, the Serving node communicates with the home network side, and there is at least one Assisted node that communicates with the Serving node. The Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side, and the satellite side includes several Sa nodes. , the home network side also communicates with the Sa node.
在本实施例中，Sa node安装在LEO卫星上。In this embodiment, the Sa node is installed on a LEO satellite.
上述的各个节点上均具有数据缓存单元，数据缓存单元能够储存请求报文来完成路由转发。Each of the above-mentioned nodes has a data cache unit, and the data cache unit can store the request message to complete routing and forwarding.
图2所示的应用于归属网络侧的该方法包括以下步骤：The method shown in Figure 2 and applied to the home network side includes the following steps:
S500、5GC的AMF网元获取Serving node的卫星节点唤醒信令以及Serving node报告的位置信息。The AMF network elements of S500 and 5GC obtain the satellite node wake-up signaling of the Serving node and the location information reported by the Serving node.
S600、AMF网元根据位置信息以及星历信息确定能够与Assisted node建立通信链路的Sa node，并向能够与Assisted node建立通信链路 的该Sa node发送卫星节点传输信令。需要说明的是，能够与Assisted node建立通信链路的Sa node为不止一个Sa node。S600, the AMF network element determines a Sa node capable of establishing a communication link with the Assisted node according to the location information and ephemeris information, and sends a satellite node transmission signaling to the Sa node capable of establishing a communication link with the Assisted node. It should be noted that the Sa node that can establish a communication link with the Assisted node is more than one Sa node.
可以理解的是，未被激活的Assisted node以及Sa node均可以设置为休眠状态，以减少能耗。It is understandable that both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
下面结合图3描述本公开的卫星网络的覆盖扩展方法，该方法应用于卫星侧，卫星侧包括若干Sa node(卫星节点)，Sa node均与归属网络侧例如5GC以及地面侧通信连接，地面侧包括Serving node(服务节点)和Assisted node(辅助节点)，Serving node为正在服务的基站(Base Station，BS)节点，Assisted node为星地辅助BS节点，Serving node和Assisted node位于同一物理位置区域，例如Serving node处于一个小区，Assisted node也位于该小区，并且各个Assisted node具体的位于该小区的子区域范围内。其中，Serving node与归属网络侧通信连接，Assisted node存在至少一个并且均与Serving node通信连接，Assisted node还均与部分Sa node通信连接。The coverage extension method of the satellite network of the present disclosure is described below in conjunction with FIG. 3. The method is applied to the satellite side. The satellite side includes several Sa nodes (satellite nodes), and the Sa nodes are all connected to the home network side such as 5GC and the ground side. The ground side Including Serving node (service node) and Assisted node (auxiliary node), Serving node is the serving base station (Base Station, BS) node, Assisted node is the star-ground auxiliary BS node, Serving node and Assisted node are located in the same physical location area, For example, the Serving node is located in a cell, the Assisted node is also located in the cell, and each Assisted node is specifically located in the sub-area of the cell. Among them, the Serving node communicates with the home network side, there is at least one Assisted node and all communicate with the Serving node, and the Assisted node also communicates with some Sa nodes.
在本实施例中，Sa node安装在LEO卫星上。In this embodiment, the Sa node is installed on a LEO satellite.
上述的各个节点上均具有数据缓存单元，数据缓存单元能够储存请求报文来完成路由转发。Each of the above-mentioned nodes has a data cache unit, and the data cache unit can store the request message to complete routing and forwarding.
图3所示的应用于卫星侧的该方法包括以下步骤：The method shown in Figure 3 and applied to the satellite side includes the following steps:
S700、其中一个或者多个Sa node获取5GC的AMF的卫星节点传输信令，并激活这些Sa node，卫星节点传输信令中包含有Serving node的位置信息，其中一个与Serving node通信连接的Assisted node与Sa node基于卫星节点传输信令建立通信链路，且，与Sa node建立通信链路的Assisted node是通过Random Code进行竞争确定的。S700, one or more of the Sa nodes obtain the satellite node transmission signaling of the 5GC AMF, and activate these Sa nodes, the satellite node transmission signaling contains the position information of the Serving node, and one of the Assisted nodes communicates with the Serving node Establish a communication link with the Sa node based on satellite node transmission signaling, and the Assisted node that establishes a communication link with the Sa node is determined through Random Code competition.
S800、Sa node激活后，向卫星节点传输信令中指示的位置信息范围内的Assisted node发送卫星节点响应信令，卫星节点响应信令中携带有被配置为对Sa node进行验证的Indentification code。S800. After the Sa node is activated, send a satellite node response signaling to the Assisted node within the range of the location information indicated in the satellite node transmission signaling, and the satellite node response signaling carries an Identification code configured to verify the Sa node.
可以理解的是，未被激活的Assisted node以及Sa node均可以设置为休眠状态，以减少能耗。It is understandable that both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
考虑到存在多个Assisted node存在，图3所示的应用于卫星侧的该方法中，Assisted node通过Random Code(随机码)进行竞争激活，且， 有且仅有一个Assisted node基于竞争获取辅助节点请求信令，并基于辅助节点请求信令进行激活。Considering the existence of multiple Assisted nodes, in the method shown in Figure 3 applied to the satellite side, the Assisted node is activated through the competition of Random Code (random code), and there is one and only one Assisted node to obtain the auxiliary node based on the competition request signaling, and activate based on the secondary node request signaling.
对于在地面网络覆盖成熟的地区，LEO卫星网络几乎不提供服务，但是在偏远地区，LEO卫星网络在某一段时间内需要提供服务，因此LEO卫星网络在此状态下一直处在开启状态将产生较高能耗，并且会降低LEO卫星的使用寿命。针对以上问题，并结合图1至图3，本公开的卫星网络的覆盖扩展方法提供了一种将LEO卫星从休眠态转到激活态的信令流程以及支持快速服务的PnP连接建立流程，形成网络动态广域覆盖扩展机制，通过地面侧的服务节点监听终端用户的流量，并在流量超过预设值时，向归属网络侧发起卫星节点唤醒信令以及当前服务节点所在的位置信息，以及，向地面侧的辅助节点发送辅助节点请求信令，用以激活辅助节点并监听卫星侧的卫星节点；归属网络侧再基于位置信息以及星历信息确定能够与辅助节点建立通信链路的卫星节点，向这些能够建立通信链路卫星节点发送卫星节点传输信令，并基于卫星节点传输信令激活这些卫星节点，基于随机码竞争从而被激活的辅助节点会接收到被激活的卫星节点发送的卫星节点响应信令后，激活基于内容的模式，基于内容的模式为支持快速服务的PnP模式，本公开的卫星网络的覆盖扩展方法实现了地面网络与卫星网络相融合，对LEO卫星网络进行覆盖的增强，能够应用于中西部地区的高速移动场景，如高铁途径中西部地区，以及边远地区的覆盖增强场景。For areas with mature terrestrial network coverage, the LEO satellite network hardly provides services, but in remote areas, the LEO satellite network needs to provide services for a certain period of time, so the LEO satellite network is always on in this state. High energy consumption and will reduce the service life of LEO satellites. In view of the above problems, combined with Fig. 1 to Fig. 3, the coverage extension method of the satellite network disclosed in the present disclosure provides a signaling process for changing the LEO satellite from a dormant state to an active state and a PnP connection establishment process supporting fast services, forming The network dynamic wide-area coverage expansion mechanism monitors the traffic of end users through the service node on the ground side, and when the traffic exceeds the preset value, initiates satellite node wake-up signaling and the location information of the current service node to the home network side, and, Send the auxiliary node request signaling to the auxiliary node on the ground side to activate the auxiliary node and monitor the satellite node on the satellite side; the home network side then determines the satellite node that can establish a communication link with the auxiliary node based on the location information and ephemeris information, Send satellite node transmission signaling to these satellite nodes that can establish communication links, and activate these satellite nodes based on the satellite node transmission signaling, based on random code competition, the activated auxiliary nodes will receive the satellite nodes sent by the activated satellite nodes After responding to the signaling, the content-based mode is activated. The content-based mode is a PnP mode that supports fast services. The coverage expansion method of the satellite network disclosed in the present disclosure realizes the integration of the ground network and the satellite network, and enhances the coverage of the LEO satellite network. , can be applied to high-speed mobile scenarios in the central and western regions, such as high-speed rail passing through the central and western regions, and coverage enhancement scenarios in remote areas.
为了满足LEO卫星迅速从激活到进行服务的过程，本公开的卫星网络的覆盖扩展方法优化了信令交互的流程，为了做到与新空口(New Radio，NR)相兼容，请参阅图4，图1至图3的本公开的卫星网络的覆盖扩展方法中规定了各信令流程中具体携带的信息以及能够完成的任务，同时也设计了规定了流程的各个节点进行的操作。In order to meet the rapid process from activation to service of LEO satellites, the coverage extension method of the disclosed satellite network optimizes the signaling interaction process. In order to be compatible with New Radio (New Radio, NR), please refer to Figure 4, The satellite network coverage extension method of the present disclosure in FIGS. 1 to 3 specifies the specific information carried in each signaling process and the tasks that can be completed, and also designs the operations performed by each node that specifies the process.
下面对图4中出现的各个信令及信令中包含的具体内容进行介绍。Each signaling appearing in FIG. 4 and the specific content contained in the signaling are introduced below.
Figure PCTCN2022072267-appb-000001
Figure PCTCN2022072267-appb-000001
Figure PCTCN2022072267-appb-000002
Figure PCTCN2022072267-appb-000002
Figure PCTCN2022072267-appb-000003
Figure PCTCN2022072267-appb-000003
本公开的卫星网络的覆盖扩展方法提供一种支持PnP的LEO覆盖增强机制，能够应用于中西部地区的高速移动场景，如高铁途径中西部地区，以及边远地区的覆盖增强场景。下面针对上述提到的这两种场景，对本公开的具体实施例进行说明。The disclosed satellite network coverage extension method provides a PnP-supporting LEO coverage enhancement mechanism, which can be applied to high-speed mobile scenarios in central and western regions, such as high-speed rail passing through the central and western regions, and coverage enhancement scenarios in remote regions. Specific embodiments of the present disclosure will be described below for the above-mentioned two scenarios.
如图4所示，本公开的卫星网络的覆盖扩展方法，通过以下步骤激活卫星节点：As shown in Fig. 4, the coverage extension method of the satellite network of the present disclosure activates the satellite nodes through the following steps:
A1：休眠的Sa node周期性监测带有PnP的Message type信令，考虑到PnP类业务具有长时间尺度的周期性以及短时间尺度的随机性，根据不同的LEO卫星覆盖地区的业务密集程度、轨道周期等得到不同的LEO卫星唤醒概率。当LEO卫星激活后在一个固定的时间长度监听PnP信号。A1: The dormant Sa node periodically monitors the Message type signaling with PnP. Considering that the PnP business has long-term periodicity and short-term randomness, according to the business intensity of different LEO satellite coverage areas, Orbit period etc. get different wake-up probabilities for LEO satellites. Listen for PnP signals for a fixed length of time when the LEO satellite is active.
A2：LEO卫星接收到PnP模式激活信令后，校验信令中携带的Target Sa node ID信息，校验成功后与相邻卫星建立同步，初始化卫星上的缓存列表、待定兴趣表和路由转发表，其中：A2: After the LEO satellite receives the PnP mode activation signaling, it verifies the Target Sa node ID information carried in the signaling, establishes synchronization with the adjacent satellite after the verification is successful, and initializes the cache list, pending interest table and routing forwarding on the satellite. published, among which:
缓存列表：由内容名以及存活时间两个属性描述，存活时间采用多请求延时机制，即一项缓存在命中之后延长存活时间；待定兴趣表：由内容名、到达波束及存活时间三个属性描述。当有多个到达波束中携带相同的请求，只添加波束名称。存活时间根据波束角度达到边界角度的时间决定；路由转发表：同待定兴趣表有三个属性描述。Cache list: described by the two attributes of content name and survival time. The survival time adopts a multi-request delay mechanism, that is, a cache extends the survival time after a hit; pending interest list: consists of three attributes: content name, arrival beam and survival time describe. When there are multiple arriving beams carrying the same request, only the beam name is added. The survival time is determined according to the time when the beam angle reaches the boundary angle; the routing and forwarding table: the same as the pending interest table has three attribute descriptions.
A3：激活的LEO卫星在配置完成之后向目标区域发送激活确认信息，Assisted node接收到确认信息后进行基于内容的通信过程。A3: After the activated LEO satellite is configured, it sends an activation confirmation message to the target area, and the Assisted node performs a content-based communication process after receiving the confirmation message.
在激活PnP模式后抹除UE在PDU Session建立时得到的出口IP 地址、QoS Rule(s)等信息，通过Assisted node的协议转换完成基于内容的寻址。After activating the PnP mode, the information such as the egress IP address and QoS Rule(s) obtained by the UE when the PDU Session is established is erased, and the content-based addressing is completed through the protocol conversion of the Assisted node.
请参阅图5，在本公开其中一种实施例中，由于高铁场景具有较高的移动性，小基站难以保证切换的成功率，同时宏基站不能提供需求的数据速率，因此需要LEO卫星进行覆盖的增强，可以运用本公开的卫星网络的覆盖扩展方法。具体的，多颗LEO卫星之间存在星间组网，Serving node(服务节点)与Assisted node(辅助节点)为同一节点并且均可以放置于高铁上，同时高铁在宏基站的覆盖下。Please refer to Figure 5. In one embodiment of the present disclosure, due to the high mobility of the high-speed rail scene, it is difficult for the small base station to guarantee the success rate of handover, and at the same time, the macro base station cannot provide the required data rate, so LEO satellites are required for coverage The enhancement of the coverage extension method of the satellite network of the present disclosure can be used. Specifically, there is an inter-satellite network between multiple LEO satellites. The Serving node (service node) and the Assisted node (auxiliary node) are the same node and can be placed on the high-speed rail. At the same time, the high-speed rail is under the coverage of the macro base station.
如图5所示，当Serving node监测到宏基站无法满足高铁上用户的数据请求时，由Serving node向5GC的AMF网元发起卫星节点唤醒信令Sa node Active Request，同时Serving node开始监听目标LEO卫星信号直到收到卫星节点响应信令Sa node Active Response。当AMF网元接收到卫星节点唤醒信令Sa node Active Request时，根据卫星节点唤醒信令Sa node Active Request中的Source RAN Node ID字段调取卫星星历信息来匹配可以用来建立连接的LEO卫星，在选择好LEO卫星后，AMF发出卫星节点传输信令Sa node Active Transfer，卫星节点传输信令Sa node Active Transfer可以通过星间链路或者地面站进行转发。需要说明的是，卫星节点传输信令Sa node Active Transfer中包含被配置为双向验证的Indentification code信息以及被配置为激活卫星的Message Type信息，周期性监听的目标LEO卫星收到Message Type信息后开始工作，同时向Source RAN Node ID指示的Serving node节点发送卫星节点响应信令Sa node Active Response完成激活及连接建立流程，同时激活基于内容的模式，Serving node节点接收到后更改报文结构为源端口号不变，目的端口改为请求的内容名称，Serving node节点将数据报整合为请求报或者数据报的形式并向卫星节点发送。As shown in Figure 5, when the Serving node detects that the macro base station cannot satisfy the data request of the user on the high-speed rail, the Serving node initiates the satellite node wake-up signal Sa node Active Request to the AMF network element of the 5GC, and the Serving node starts to monitor the target LEO The satellite signal is received until the satellite node responds to the signaling Sa node Active Response. When the AMF network element receives the satellite node wake-up signal Sa node Active Request, it retrieves the satellite ephemeris information according to the Source RAN Node ID field in the satellite node wake-up signal Sa node Active Request to match the LEO satellite that can be used to establish a connection , after selecting the LEO satellite, the AMF sends out the satellite node transmission signal Sa node Active Transfer, which can be forwarded through the inter-satellite link or the ground station. It should be noted that the satellite node transmission signal Sa node Active Transfer contains the Identification code information configured as two-way verification and the Message Type information configured as the activation satellite, and the target LEO satellite that is periodically monitored starts to receive the Message Type information. Work, and at the same time send satellite node response signaling Sa node Active Response to the Serving node node indicated by Source RAN Node ID to complete the activation and connection establishment process, and activate the content-based mode at the same time, after the Serving node node receives it, change the message structure to the source port The number remains unchanged, the destination port is changed to the content name of the request, and the Serving node integrates the datagram into a request or datagram form and sends it to the satellite node.
终端用户在向Serving node节点发送信息时，在报文头中添加PnP激活模式指示符并向Serving node节点进行数据请求。Serving node具有传输层报文解码功能，在得到PnP模式指示后将目的TNL地址映射为兴趣报文并在CS中检查命中情况，如未命中则向PIT中添加新项并发出兴趣报文。LEO卫星收到兴趣报文后返回数据报文到Serving node， Serving node在收到数据报文后删掉PIT对应项并且存储到CS中并将数据内容封装为传统报文向终端用户返回。When the end user sends information to the Serving node, the PnP activation mode indicator is added to the message header and a data request is made to the Serving node. The Serving node has the function of decoding messages at the transport layer. After receiving the PnP mode instruction, it maps the destination TNL address to an Interest message and checks the hit in the CS. If it is not hit, it adds a new item to the PIT and sends an Interest message. After receiving the interest message, the LEO satellite returns the data message to the Serving node. After receiving the data message, the Serving node deletes the PIT corresponding item and stores it in the CS, and encapsulates the data content into a traditional message and returns it to the end user.
请参阅图6，在本公开另一种实施例中，边远地区场景具有业务时空分布不均、地面的基站建设极为落后的特点，高数据速率的业务不是一直存在，这些地区缺少高数据速率的覆盖，对这些地区进行超密集基站的覆盖会带来高昂的成本，同时，这些地区人口稀疏，建设大量通信基础设施具有极低的性价比，现有技术中通常采用LEO的间歇***。因此也需要LEO卫星进行覆盖的增强，可以运用本公开的卫星网络的覆盖扩展方法来解决这一场景下的问题。Please refer to Figure 6. In another embodiment of the present disclosure, the scene in remote areas has the characteristics of uneven temporal and spatial distribution of services and extremely backward base station construction on the ground. High data rate services do not always exist, and these areas lack high data rate services. Coverage, covering these areas with ultra-dense base stations will bring high costs. At the same time, these areas are sparsely populated, and it is extremely cost-effective to build a large number of communication infrastructures. LEO intermittent services are usually used in existing technologies. Therefore, LEO satellites are also required to enhance coverage, and the method for expanding coverage of a satellite network disclosed in the present disclosure can be used to solve the problem in this scenario.
如图6所示，边远地区的UE被地面基站所覆盖，仅能满足基本通信需求，当产生密集的数据请求时，地面基站不能满足大量终端用户的需求，此时地面基站通知核心网触发基于卫星激活的PnP流程。As shown in Figure 6, UEs in remote areas are covered by ground base stations, which can only meet basic communication needs. When dense data requests are generated, ground base stations cannot meet the needs of a large number of end users. At this time, the ground base station notifies the core network to trigger Satellite activated PnP process.
边远地区场景中具有传统地面基站节点用来提供基础通信服务，以及在建筑物或公共场景中散布PnP地面节点，在LEO卫星未激活时，散布的PnP地面节点处于休眠状态，星地节点支持PnP的覆盖扩展流程如下：There are traditional ground base station nodes in remote areas to provide basic communication services, and PnP ground nodes are scattered in buildings or public scenes. When the LEO satellite is not activated, the scattered PnP ground nodes are in a dormant state, and the satellite-ground nodes support PnP The coverage extension process is as follows:
1、在传统地面基站感知到数据请求的激增到达阈值时例如通过PDU Session来完成，向AMF发送卫星节点唤醒信令Sa node Active Request，根据卫星节点唤醒信令Sa node Active Request中的Source RAN Node ID信息确定地理区域，并结合星历信息确定选择的激活卫星。同时发送周期广播信令来激活Assisted node，Assistednode接收到激活信息后回复notify信息并携带随机码及信道状态信息CSI，Serving node指定Assisted node发送Confirm信息携带随机码以及Indentification code完成激活。1. When the traditional ground base station perceives the surge of data requests reaching the threshold, for example, through the PDU Session, it sends the satellite node wake-up signal Sa node Active Request to the AMF, and wakes up the Source RAN Node in the signal Sa node Active Request according to the satellite node The ID information identifies the geographic area and is combined with the ephemeris information to determine the selected active satellites. At the same time, periodic broadcast signaling is sent to activate the Assisted node. After receiving the activation information, the Assisted node replies with a notify message carrying a random code and channel state information CSI. The Serving node specifies that the Assisted node sends a Confirm message carrying a random code and an Identification code to complete the activation.
2、AMF接收到Sa node Active Request信令后向选定卫星发送卫星节点传输信令Sa node Active Transfer，并携带Indentification code、Message Type、Target Sa node ID来验证选择的Sa node(卫星节点)。2. After receiving the Sa node Active Request signaling, the AMF sends the satellite node transmission signaling Sa node Active Transfer to the selected satellite, and carries the Identification code, Message Type, and Target Sa node ID to verify the selected Sa node (satellite node).
3、Sa node激活后向Assisted node发送卫星节点响应信令Sa node Active Response，卫星节点响应信令Sa node Active Response中包括节点验证信息。3. After the Sa node is activated, it sends the satellite node response signal Sa node Active Response to the Assisted node, and the satellite node response signal Sa node Active Response includes node verification information.
4、终端用户与卫星之间通过Assisted node完成基于IP的寻址到基于内容的寻址之间的转换。4. The end user and the satellite complete the conversion between IP-based addressing and content-based addressing through the Assisted node.
综上，本公开的卫星网络的覆盖扩展方法针对高铁途径中西部地区，以及边远地区的覆盖增强场景这两种场景，能够迅速提供服务的卫星连接建立的流程机制，并提供了流程机制中具体的信令内容以及与地面兼容的统一协议栈。To sum up, the satellite network coverage expansion method disclosed in the present disclosure aims at the two scenarios of high-speed rail passing through the central and western regions, and the coverage enhancement scenario in remote areas, and can quickly provide service satellite connection establishment process mechanism, and provides specific details in the process mechanism. The signaling content and the unified protocol stack compatible with the ground.
目前的天地节点没有真正做到融合的原因一部分是在于没有统一的协议栈以及星上能够完成的操作较为单一，多为透明转发的卫星，DVB-S等协议栈仅设计了物理层及链路层的相关协议，对于星上处理、星上路由的需求难以得到满足。因此在本公开的卫星网络的覆盖扩展方法中沿用了目前卫星主流的ATM***，并且融入了基于内容的高层协议内容，并在地面BS节点集成了协议转换的功能使得地面网络与卫星网络相融合，形成了天地一体化协议栈，具体的，在UE端采用向NR兼容的协议栈构成，具有NR的物理层的数据传输功能，以及L2层的链路控制、流映射、包的分割重组等功能，同时也具备传输层的连接建立等功能，能与Assisted node建立逻辑链路；Assisted node具有协议栈换的功能，能与终端UE建立物理及逻辑链路，同时也具备与卫星的ATM等***建立连接的能力，在高层的寻址与交换适配于本公开中提出的在LEO卫星上采用基于内容的寻址方式，在Assisted node端采用同时与卫星和NR兼容的多模态协议栈：下层通过L2/PHY与ATM的转换完成与卫星在低层的信号频率、编码制式、差错检验等功能；在高层通过SCTP、UDP、TCP\IP与Content Layer的转换完成在网络中基于内容的路由以及实现在节点初始建立时的快速响应。在LEO卫星上采用基于内容寻址的协议栈，能够与Serving node建立起物理及逻辑链路。Part of the reason why the current space and ground nodes have not really achieved integration is that there is no unified protocol stack and the operations that can be completed on the satellite are relatively simple, and most of them are satellites that are transparently forwarded. Protocol stacks such as DVB-S only design the physical layer and links. It is difficult to meet the requirements of on-board processing and on-board routing for the related protocols of different layers. Therefore, in the satellite network coverage expansion method disclosed in the present disclosure, the current satellite mainstream ATM system is used, and the content-based high-level protocol content is integrated, and the function of protocol conversion is integrated in the ground BS node so that the ground network and the satellite network are integrated. , forming a space-ground integrated protocol stack. Specifically, a protocol stack compatible with NR is adopted on the UE side, which has the data transmission function of the physical layer of NR, as well as link control, flow mapping, and packet segmentation and reassembly of the L2 layer. At the same time, it also has the function of establishing a connection at the transport layer, and can establish a logical link with the Assisted node; the Assisted node has the function of protocol stack replacement, can establish a physical and logical link with the terminal UE, and also has ATM with the satellite, etc. The ability of the system to establish a connection, the addressing and switching at the high level is adapted to the content-based addressing method proposed in this disclosure on the LEO satellite, and the multi-modal protocol stack compatible with the satellite and NR is adopted at the Assisted node side : The lower layer completes functions such as satellite signal frequency, coding system, and error checking at the lower layer through the conversion of L2/PHY and ATM; the upper layer completes content-based routing in the network through the conversion of SCTP, UDP, TCP\IP and Content Layer And to achieve a fast response when the node is initially established. A protocol stack based on content addressing is used on the LEO satellite to establish a physical and logical link with the Serving node.
下面对本公开提供的卫星网络的覆盖扩展装置进行描述，下文描述的卫星网络的覆盖扩展装置与上文描述的卫星网络的覆盖扩展方法可相互对应参照。The following describes the satellite network coverage extension device provided by the present disclosure. The satellite network coverage extension device described below and the satellite network coverage extension method described above can be referred to in correspondence.
下面结合图7描述本公开的卫星网络的覆盖扩展装置，该装置应用于地面侧，地面侧包括Serving node(服务节点)和Assisted node(辅助节点)，Serving node为正在服务的基站(Base Station，BS)节点，Assisted node为星地辅助BS节点，Serving node和Assisted node位于同一物理位置区域，例如Serving node处于一个小区，Assisted node也位于该小 区，并且各个Assisted node具体的位于该小区的子区域范围内。其中，Serving node与归属网络侧例如5GC(5G Core Network)通信连接，Assisted node存在至少一个并且均与Serving node通信连接，Assisted node还均与安装在卫星侧的部分Sa node(卫星节点)通信连接，归属网络侧也与Sa node通信连接。图7所示的应用于地面侧的该装置包括：The coverage extension device of the satellite network of the present disclosure is described below in conjunction with FIG. 7. The device is applied to the ground side, and the ground side includes a Serving node (service node) and an Assisted node (assistant node), and the Serving node is a serving base station (Base Station, BS) node, the Assisted node is a star-ground auxiliary BS node, the Serving node and the Assisted node are located in the same physical location area, for example, the Serving node is located in a community, the Assisted node is also located in the community, and each Assisted node is specifically located in a sub-area of the community within range. Among them, the Serving node communicates with the home network side, such as 5GC (5G Core Network), and there is at least one Assisted node that communicates with the Serving node. The Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side. , the home network side also communicates with the Sa node. The device shown in Figure 7 applied to the ground side includes:
第一获取模块100，被配置为通过Serving node监听其覆盖范围内的UE的流量。The first obtaining module 100 is configured to monitor the traffic of the UE within its coverage through the Serving node.
第一发送模块200，被配置为当流量超出预设值时，Serving node向5GC的AMF网元发送卫星节点唤醒信令以及Serving node的位置信息，以及，向Assisted node发送被配置为激活Assisted node的辅助节点请求信令。The first sending module 200 is configured such that when the traffic exceeds the preset value, the Serving node sends the satellite node wake-up signaling and the location information of the Serving node to the AMF network element of the 5GC, and sends a signal configured to activate the Assisted node to the Assisted node. Secondary request signaling for .
第一激活模块300，被配置为基于辅助节点请求信令，激活Assisted node，监听卫星侧。The first activation module 300 is configured to activate the Assisted node based on the auxiliary node request signaling, and monitor the satellite side.
第二激活模块400，被配置为当Assisted node接收到被激活的卫星侧发送的Sa node响应信令后，激活基于内容的模式。被激活的卫星侧为至少一个Sa node，基于内容的模式为将Assisted node置为PnP模式，UE接收到后更改传输层报文变为源端口号不变，目的端口改为请求的内容名称，且，Assisted node将报文整合为请求报的形式并向卫星侧的Sa node发送。The second activation module 400 is configured to activate the content-based mode after the Assisted node receives the Sa node response signaling sent by the activated satellite side. The activated satellite side is at least one Sa node. The content-based mode is to set the Assisted node to PnP mode. After receiving the UE, the transport layer message is changed to the source port number unchanged, and the destination port is changed to the requested content name. Moreover, the Assisted node integrates the message into the form of a request message and sends it to the Sa node on the satellite side.
可以理解的是，未被激活的Assisted node以及Sa node均可以设置为休眠状态，以减少能耗。It is understandable that both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
下面结合图8描述本公开的卫星网络的覆盖扩展装置，该装置应用于归属网络侧，例如5GC，归属网络侧与卫星侧以及地面侧通信连接，地面侧包括Serving node(服务节点)和Assisted node(辅助节点)，Serving node为正在服务的BS节点，Assisted node为星地辅助BS节点，Serving node和Assisted node位于同一物理位置区域，例如Serving node处于一个小区，Assisted node也位于该小区，并且各个Assisted node具体的位于该小区的子区域范围内。其中，Serving node与归属网络侧通信连接，Assisted node存在至少一个并且均与Serving node通信连接，Assisted node还均与安装在卫星侧的部分Sa node(卫星节点)通信连接，卫星 侧包括若干Sa node，归属网络侧也与Sa node通信连接。图8所示的应用于归属网络侧的该装置包括：The satellite network coverage extension device of the present disclosure is described below in conjunction with FIG. 8. The device is applied to the home network side, such as 5GC. The home network side communicates with the satellite side and the ground side, and the ground side includes Serving node (service node) and Assisted node. (Auxiliary node), Serving node is the serving BS node, Assisted node is the star-ground auxiliary BS node, Serving node and Assisted node are located in the same physical location area, for example, Serving node is in a community, Assisted node is also located in the community, and each The Assisted node is specifically located within the sub-area of the cell. Among them, the Serving node communicates with the home network side, and there is at least one Assisted node that communicates with the Serving node. The Assisted node also communicates with some Sa nodes (satellite nodes) installed on the satellite side, and the satellite side includes several Sa nodes. , the home network side also communicates with the Sa node. The device shown in Figure 8 applied to the home network side includes:
第二获取模块500，被配置为通过5GC的AMF网元获取Serving node的卫星节点唤醒信令以及Serving node报告的位置信息。The second obtaining module 500 is configured to obtain the satellite node wake-up signaling of the Serving node and the location information reported by the Serving node through the AMF network element of the 5GC.
第二发送模块600，被配置为通过AMF网元根据位置信息以及星历信息确定能够与Assisted node建立通信链路的Sa node，并向能够与Assisted node建立通信链路的该Sa node发送卫星节点传输信令。需要说明的是，能够与Assisted node建立通信链路的Sa node为不止一个Sa node。The second sending module 600 is configured to determine the Sa node that can establish a communication link with the Assisted node according to the location information and ephemeris information through the AMF network element, and send the satellite node to the Sa node that can establish a communication link with the Assisted node Transmission signaling. It should be noted that the Sa node that can establish a communication link with the Assisted node is more than one Sa node.
可以理解的是，未被激活的Assisted node以及Sa node均可以设置为休眠状态，以减少能耗。It is understandable that both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
下面结合图9描述本公开的卫星网络的覆盖扩展装置，该装置应用于卫星侧，卫星侧包括若干Sa node(卫星节点)，Sa node均与归属网络侧例如5GC以及地面侧通信连接，地面侧包括Serving node(服务节点)和Assisted node(辅助节点)，Serving node为正在服务的基站(Base Station，BS)节点，Assisted node为星地辅助BS节点，Serving node和Assisted node位于同一物理位置区域，例如Serving node处于一个小区，Assisted node也位于该小区，并且各个Assisted node具体的位于该小区的子区域范围内。其中，Serving node与归属网络侧通信连接，Assisted node存在至少一个并且均与Serving node通信连接，Assisted node还均与部分Sa node通信连接。图9所示的应用于卫星侧的装置包括：The following describes the coverage extension device of the satellite network of the present disclosure in conjunction with FIG. 9. The device is applied to the satellite side. The satellite side includes several Sa nodes (satellite nodes), and the Sa nodes are all connected to the home network side such as 5GC and the ground side. The ground side Including Serving node (service node) and Assisted node (auxiliary node), Serving node is the serving base station (Base Station, BS) node, Assisted node is the star-ground auxiliary BS node, Serving node and Assisted node are located in the same physical location area, For example, the Serving node is located in a cell, the Assisted node is also located in the cell, and each Assisted node is specifically located in the sub-area of the cell. Among them, the Serving node communicates with the home network side, there is at least one Assisted node and all communicate with the Serving node, and the Assisted node also communicates with some Sa nodes. The device applied to the satellite side shown in Figure 9 includes:
第三获取模块700，被配置为通过其中一个或者多个Sa node获取5GC的AMF的卫星节点传输信令，并激活这些Sa node，卫星节点传输信令中包含有Serving node的位置信息，其中一个与Serving node通信连接的Assisted node与Sa node基于卫星节点传输信令建立通信链路，且，与Sa node建立通信链路的Assisted node是通过Random Code进行竞争确定的。The third obtaining module 700 is configured to obtain the satellite node transmission signaling of the AMF of 5GC through one or more Sa nodes, and activate these Sa nodes. The satellite node transmission signaling contains the position information of the Serving node, and one of them The Assisted node and the Sa node that communicate with the Serving node establish a communication link based on the satellite node transmission signaling, and the Assisted node that establishes a communication link with the Sa node is determined through the competition of the Random Code.
第三发送模块800，被配置为在Sa node激活后，向卫星节点传输信中包含的位置信息范围内的Assisted node发送卫星节点传输信令，卫星 节点响应信令中携带有被配置为对Sa node进行验证的Indentification code。The third sending module 800 is configured to send a satellite node transmission signaling to an Assisted node within the range of the location information contained in the satellite node transmission letter after the Sa node is activated, and the satellite node response signaling carries a signal configured to respond to Sa The Identification code for node verification.
可以理解的是，未被激活的Assisted node以及Sa node均可以设置为休眠状态，以减少能耗。It is understandable that both Assisted nodes and Sa nodes that are not activated can be set to sleep to reduce energy consumption.
本公开的卫星网络的覆盖扩展装置提供了一种将LEO卫星从休眠态转到激活态的信令流程以及支持快速服务的PnP连接建立流程，形成网络动态广域覆盖扩展机制，通过地面侧的服务节点监听终端用户的流量，并在流量超过预设值时，向归属网络侧发起卫星节点唤醒信令以及当前服务节点所在的位置信息，以及，向地面侧的辅助节点发送辅助节点请求信令，用以激活辅助节点并监听卫星侧的卫星节点；归属网络侧再基于位置信息以及星历信息确定能够与辅助节点建立通信链路的卫星节点，向这些能够建立通信链路卫星节点发送卫星节点传输信令，并基于卫星节点传输信令激活这些卫星节点，基于随机码竞争从而被激活的辅助节点会接收到被激活的卫星节点发送的卫星节点响应信令后，激活基于内容的模式，基于内容的模式为支持快速服务的PnP模式，本公开的卫星网络的覆盖扩展装置实现了地面网络与卫星网络相融合，对LEO卫星网络进行覆盖的增强，能够应用于中西部地区的高速移动场景，如高铁途径中西部地区，以及边远地区的覆盖增强场景。The coverage expansion device of the satellite network disclosed in the present disclosure provides a signaling process for turning LEO satellites from a dormant state to an active state and a PnP connection establishment process supporting fast services, forming a network dynamic wide-area coverage expansion mechanism, through ground side The service node monitors the traffic of the terminal user, and when the traffic exceeds the preset value, initiates satellite node wake-up signaling and the location information of the current service node to the home network side, and sends an auxiliary node request signaling to the auxiliary node on the ground side , to activate the auxiliary node and monitor the satellite nodes on the satellite side; the home network side then determines satellite nodes that can establish communication links with the auxiliary node based on the location information and ephemeris information, and sends satellite nodes to these satellite nodes that can establish communication links. Transmit signaling, and activate these satellite nodes based on satellite node transmission signaling. Based on random code competition, the activated auxiliary node will activate the content-based mode after receiving the satellite node response signaling sent by the activated satellite node. The mode of the content is the PnP mode supporting fast service. The coverage expansion device of the satellite network disclosed in the present disclosure realizes the integration of the ground network and the satellite network, enhances the coverage of the LEO satellite network, and can be applied to high-speed mobile scenarios in the central and western regions. For example, high-speed rail passes through the central and western regions, and coverage enhancement scenarios in remote areas.
图10示例了一种电子设备的实体结构示意图，如图10所示，该电子设备可以包括：处理器(processor)810、通信接口(CommunicationsInterface)820、存储器(memory)830和通信总线840，其中，处理器810，通信接口820，存储器830通过通信总线840完成相互间的通信。处理器810可以调用存储器830中的逻辑指令，以执行卫星网络的覆盖扩展方法，该方法包括以下步骤：FIG. 10 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 10 , the electronic device may include: a processor (processor) 810, a communication interface (CommunicationsInterface) 820, a memory (memory) 830, and a communication bus 840, wherein , the processor 810 , the communication interface 820 , and the memory 830 communicate with each other through the communication bus 840 . The processor 810 can call the logic instructions in the memory 830 to execute the coverage extension method of the satellite network, and the method includes the following steps:
所述服务节点监听其覆盖范围内的用户设备的流量；The service node monitors the traffic of the user equipment within its coverage;
当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令；When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧；Based on the auxiliary node request signaling, activate the auxiliary node and monitor the satellite side;
当所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信 令后，激活基于内容的模式；其中，所述基于内容的模式为将所述辅助节点置为即插即用模式，且，所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activate the content-based mode; wherein, the content-based mode is to set the auxiliary node into a plug-and-play mode , and, the assistant node integrates the message into a form of request message and sends it to the satellite side.
或者，获取所述服务节点的卫星节点唤醒信令以及位置信息；Or, acquire satellite node wake-up signaling and location information of the serving node;
根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传输信令。Determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and ephemeris information, and send a satellite node transmission signaling to the satellite node capable of establishing a communication link with the auxiliary node .
或者，所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；Alternatively, the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them is related to the service node The auxiliary node in communication connection and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点响应信令；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
此外，上述的存储器830中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-OnlyMemory)、随机存取存储器(RAM，RandomAccessMemory)、磁碟或者光盘等各种可以存储程序代码的介质。In addition, the above logic instructions in the memory 830 may be implemented in the form of software functional units and when sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disk or optical disk and other media that can store program codes.
另一方面，本公开还提供一种计算机程序产品，所述计算机程序产品包括计算机程序，计算机程序可存储在非暂态计算机可读存储介质上，所述计算机程序被处理器执行时，计算机能够执行上述各方法所提供的卫星网络的覆盖扩展方法，该方法包括以下步骤：On the other hand, the present disclosure also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can Carry out the coverage expansion method of the satellite network provided by above-mentioned each method, this method comprises the following steps:
所述服务节点监听其覆盖范围内的用户设备的流量；The service node monitors the traffic of the user equipment within its coverage;
当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令；When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
基于所述辅助节点请求信令激活所述辅助节点，监听所述卫星侧；activating the auxiliary node based on the auxiliary node request signaling, and monitoring the satellite side;
当所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式；其中，所述基于内容的模式为将所述辅助节点置为即插即用模式，且，所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activate the content-based mode; wherein, the content-based mode is to set the auxiliary node into a plug-and-play mode , and, the assistant node integrates the message into a form of request message and sends it to the satellite side.
或者，获取所述服务节点的卫星节点唤醒信令以及位置信息；Or, acquire satellite node wake-up signaling and location information of the serving node;
根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传输信令。Determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and ephemeris information, and send a satellite node transmission signaling to the satellite node capable of establishing a communication link with the auxiliary node .
或者，所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；Alternatively, the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them is related to the service node The auxiliary node in communication connection and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点响应信令；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
又一方面，本公开还提供一种非暂态计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现以执行上述各方法提供的卫星网络的覆盖扩展方法，该方法包括以下步骤：In another aspect, the present disclosure also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the satellite network coverage extension method provided by the above methods, the The method includes the following steps:
所述服务节点监听其覆盖范围内的用户设备的流量；The service node monitors the traffic of the user equipment within its coverage;
当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令；When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling;
基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧；Based on the auxiliary node request signaling, activate the auxiliary node and monitor the satellite side;
当所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式；其中，所述基于内容的模式为将所述辅助节 点置为即插即用模式，且，所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, activate the content-based mode; wherein, the content-based mode is to set the auxiliary node into a plug-and-play mode , and, the assistant node integrates the message into a form of request message and sends it to the satellite side.
或者，获取所述服务节点的卫星节点唤醒信令以及位置信息；Or, acquire satellite node wake-up signaling and location information of the serving node;
根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传输信令。Determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and ephemeris information, and send a satellite node transmission signaling to the satellite node capable of establishing a communication link with the auxiliary node .
或者，所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；Alternatively, the satellite node obtains and activates the satellite node transmission signaling on the home network side; wherein, the satellite node transmission signaling includes the location information of the service node, and one of them is related to the service node The auxiliary node in communication connection and the satellite node establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点响应信令；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。After the satellite node is activated, it sends a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling; wherein, the satellite node response signaling carries information configured to The identity code used by the satellite node for verification.
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到各实施方式可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件。基于这样的理解，上述技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行各个实施例或者实施例的某些部分所述的方法。Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.
应该理解，可以使用上面所示的各种形式的流程，重新排序、增加或删除步骤。例如，本公开中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行，只要能够实现本公开公开的技术方案所期望的 结果，本文在此不进行限制。It should be understood that steps may be reordered, added or deleted using the various forms of flow shown above. For example, each step described in the present disclosure may be executed in parallel, sequentially, or in a different order, as long as the desired result of the technical solution disclosed in the present disclosure can be achieved, no limitation is imposed herein.
上述具体实施方式，并不构成对本公开保护范围的限制。本领域技术人员应该明白的是，根据设计要求和其他因素，可以进行各种修改、组合、子组合和替代。任何在本公开的精神和原则之内所作的修改、等同替换和改进等，均应包含在本公开保护范围之内。The specific implementation manners described above do not limit the protection scope of the present disclosure. It should be apparent to those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims (10)

  1. 一种卫星网络的覆盖扩展方法，应用于地面侧，其特征在于，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及归属网络侧通信连接，所述辅助节点与同所述归属网络侧建立通信的卫星侧通信连接，所述覆盖扩展方法包括以下步骤：A coverage extension method of a satellite network, applied to the ground side, characterized in that the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, and the service node and the auxiliary node The node and the home network side are in communication connection, the auxiliary node is in communication connection with the satellite side that establishes communication with the home network side, and the coverage extension method includes the following steps:
    所述服务节点监听其覆盖范围内的用户设备的流量(S100)；The service node monitors traffic of user equipment within its coverage (S100);
    当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令(S200)；When the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends an auxiliary node request configured to activate the auxiliary node to the auxiliary node signaling (S200);
    基于所述辅助节点请求信令激活所述辅助节点，监听所述卫星侧(S00)；activating the auxiliary node based on the auxiliary node request signaling, and monitoring the satellite side (S00);
    当被激活的所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式(S400)；其中，所述基于内容的模式为将所述辅助节点置为即插即用模式，且所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。After the activated auxiliary node receives the satellite node response signaling sent by the activated satellite side, it activates the content-based mode (S400); wherein, the content-based mode is to set the auxiliary node to It is a plug-and-play mode, and the auxiliary node integrates the message into a form of request message and sends it to the satellite side.
  2. 根据权利要求1所述的卫星网络的覆盖扩展方法，其特征在于，所述基于所述辅助节点请求信令激活所述辅助节点，监听所述卫星侧具体包括：The coverage extension method of a satellite network according to claim 1, wherein activating the auxiliary node based on the auxiliary node request signaling, and monitoring the satellite side specifically includes:
    当所述辅助节点不止一个时，多个所述辅助节点通过随机码竞争所述辅助节点请求信令，且，有且仅有一个所述辅助节点基于竞争获取所述辅助节点请求信令，并基于所述辅助节点请求信令进行激活。When there is more than one auxiliary node, multiple auxiliary nodes compete for the auxiliary node request signaling through random codes, and there is only one auxiliary node that obtains the auxiliary node request signaling based on competition, and Activation is performed based on the secondary node request signaling.
  3. 根据权利要求2所述的卫星网络的覆盖扩展方法，其特征在于，所述基于所述辅助节点请求信令激活所述辅助节点，监听所述卫星侧，相应的，在所述辅助节点不止一个时，具体包括以下步骤：The coverage extension method of a satellite network according to claim 2, wherein the auxiliary node is activated based on the auxiliary node request signaling to monitor the satellite side, and correspondingly, there is more than one auxiliary node , specifically include the following steps:
    所述辅助节点接收到所述辅助节点请求信令后，随机生成其对应的随机码，并向所述服务节点发送辅助节点通知信令；其中，所 述辅助节点通知信令中携带有所述随机码、身份标识码以及信道状态信息；After receiving the auxiliary node request signaling, the auxiliary node randomly generates a corresponding random code, and sends an auxiliary node notification signaling to the serving node; wherein, the auxiliary node notification signaling carries the Random code, identity code and channel state information;
    所述服务节点基于所述辅助节点通知信令中的所述信道状态信息，确定其中一个所述辅助节点作为待激活的辅助节点，并向所述待激活的辅助节点发送辅助节点确认信令；其中，所述辅助节点确认信令中携带有所述随机码；The serving node determines one of the auxiliary nodes as an auxiliary node to be activated based on the channel state information in the auxiliary node notification signaling, and sends an auxiliary node confirmation signaling to the auxiliary node to be activated; Wherein, the auxiliary node confirmation signaling carries the random code;
    基于所述随机码，所述待激活的辅助节点获取所述辅助节点确认信令，并基于所述辅助节点请求信令以及所述辅助节点确认信令进行激活，监听所述卫星侧。Based on the random code, the auxiliary node to be activated acquires the auxiliary node confirmation signaling, activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling, and monitors the satellite side.
  4. 根据权利要求3所述的卫星网络的覆盖扩展方法，其特征在于，所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式，具体包括：The coverage extension method of a satellite network according to claim 3, wherein the auxiliary node activates a content-based mode after receiving the satellite node response signaling sent by the activated satellite side, specifically comprising:
    所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，基于所述卫星节点响应信令中携带的对所述卫星节点进行验证的身份标识码，对所述卫星节点进行验证，并在验证成功后直接激活基于内容的模式。After the auxiliary node receives the satellite node response signaling sent by the activated satellite side, based on the identity code for verifying the satellite node carried in the satellite node response signaling, the satellite node Validate and activate content-based mode directly after successful validation.
  5. 一种卫星网络的覆盖扩展方法，应用于归属网络侧，其特征在于，所述归属网络侧与卫星侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星侧通信连接，所述卫星侧包括若干卫星节点，所述覆盖扩展方法包括以下步骤：A coverage extension method for a satellite network, applied to a home network side, characterized in that the home network side communicates with a satellite side and a ground side, and the ground side includes a service node and an auxiliary node, and the service node is connected to the ground side The auxiliary node is located in the same area, the service node is communicatively connected with the auxiliary node and the home network side, the auxiliary node is communicatively connected with the satellite side, the satellite side includes several satellite nodes, and the coverage extension The method includes the following steps:
    获取所述服务节点的卫星节点唤醒信令以及位置信息(S500)；Obtain satellite node wake-up signaling and location information of the serving node (S500);
    根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传输信令(S600)。Determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and ephemeris information, and send a satellite node transmission signaling to the satellite node capable of establishing a communication link with the auxiliary node (S600).
  6. 一种卫星网络的覆盖扩展方法，应用于卫星侧，其特征在于，所述卫星侧包括若干卫星节点，所述卫星节点与归属网络侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以 及所述归属网络侧通信连接，所述辅助节点与所述卫星节点通信连接，所述覆盖扩展方法包括以下步骤：A coverage extension method of a satellite network, which is applied to the satellite side, is characterized in that the satellite side includes several satellite nodes, and the satellite nodes communicate with the home network side and the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, the service node is communicatively connected to the auxiliary node and the home network side, the auxiliary node is communicatively connected to the satellite node, and the coverage extension method Include the following steps:
    所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活(S700)；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；The satellite node obtains the satellite node transmission signaling on the home network side and activates it (S700); wherein, the satellite node transmission signaling includes the location information of the service node, one of which is related to the service node The auxiliary node and the satellite node connected by node communication establish a communication link based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is determined through competition with a random code;
    所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点响应信令(S800)；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。After the satellite node is activated, send a satellite node response signaling to the auxiliary node within the range of the location information indicated in the satellite node transmission signaling (S800); wherein, the satellite node response signaling carries the It is configured as an identity code for authenticating the satellite node.
  7. 根据权利要求6所述的卫星网络的覆盖扩展方法，其特征在于，所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活，具体包括：The coverage extension method of the satellite network according to claim 6, wherein the satellite node obtains the transmission signaling of the satellite node on the home network side and activates it, specifically comprising:
    当所述地面侧的所述辅助节点不止一个时，所述服务节点向所述辅助节点发送辅助节点请求信令；其中，所述辅助节点请求信令是在所述服务节点监听到其覆盖范围内的用户设备的流量超出预设值时生成的；When there is more than one auxiliary node on the ground side, the service node sends an auxiliary node request signaling to the auxiliary node; wherein, the auxiliary node request signaling is when the service node monitors its coverage Generated when the traffic of the user equipment within exceeds the preset value;
    所述辅助节点接收到所述辅助节点请求信令后，随机生成其对应的随机码，并向所述服务节点发送辅助节点通知信令；其中，所述辅助节点通知信令中携带有所述随机码、身份标识码以及信道状态信息；After receiving the auxiliary node request signaling, the auxiliary node randomly generates a corresponding random code, and sends an auxiliary node notification signaling to the serving node; wherein, the auxiliary node notification signaling carries the Random code, identity code and channel state information;
    所述服务节点基于所述辅助节点通知信令中的所述信道状态信息，确定其中一个所述辅助节点作为待激活的辅助节点，并向所述待激活的辅助节点发送辅助节点确认信令；其中，所述辅助节点确认信令中携带有所述随机码；The serving node determines one of the auxiliary nodes as an auxiliary node to be activated based on the channel state information in the auxiliary node notification signaling, and sends an auxiliary node confirmation signaling to the auxiliary node to be activated; Wherein, the auxiliary node confirmation signaling carries the random code;
    基于所述随机码，所述待激活的辅助节点获取所述辅助节点确认信令，并基于所述辅助节点请求信令以及所述辅助节点确认信令进行激活；其中，被激活的所述辅助节点接收所述卫星节点响应信 令。Based on the random code, the auxiliary node to be activated obtains the auxiliary node confirmation signaling, and activates based on the auxiliary node request signaling and the auxiliary node confirmation signaling; wherein, the activated auxiliary node The node receives the satellite node response signaling.
  8. 一种卫星网络的覆盖扩展装置，应用于地面侧，其特征在于，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及归属网络侧通信连接，所述辅助节点与同所述归属网络侧建立通信的卫星侧通信连接，该装置包括：A satellite network coverage expansion device, applied to the ground side, characterized in that the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, and the service node and the auxiliary node The communication connection between the node and the home network side, and the communication connection between the auxiliary node and the satellite side establishing communication with the home network side, the device includes:
    第一获取模块(100)，被配置为通过所述服务节点监听其覆盖范围内的用户设备的流量；The first obtaining module (100), configured to monitor the traffic of the user equipment within its coverage through the service node;
    第一发送模块(200)，被配置为当所述流量超出预设值时，所述服务节点向所述归属网络侧发送卫星节点唤醒信令以及位置信息，以及，向所述辅助节点发送被配置为激活所述辅助节点的辅助节点请求信令；The first sending module (200) is configured to: when the traffic exceeds a preset value, the service node sends satellite node wake-up signaling and location information to the home network side, and sends the satellite node wake-up signaling and location information to the assistant node secondary node request signaling configured to activate said secondary node;
    第一激活模块(300)，被配置为基于所述辅助节点请求信令，激活所述辅助节点，监听所述卫星侧；A first activation module (300), configured to activate the auxiliary node and monitor the satellite side based on the auxiliary node request signaling;
    第二激活模块(400)，被配置为当被激活的所述辅助节点接收到被激活的所述卫星侧发送的卫星节点响应信令后，激活基于内容的模式；其中，所述基于内容的模式为将所述辅助节点置为即插即用模式，且，所述辅助节点将报文整合为请求报的形式并向所述卫星侧发送。The second activation module (400) is configured to activate the content-based mode after the activated auxiliary node receives the satellite node response signaling sent by the activated satellite side; wherein, the content-based The mode is to put the auxiliary node in a plug-and-play mode, and the auxiliary node integrates the message into a request message and sends it to the satellite side.
  9. 一种卫星网络的覆盖扩展装置，应用于归属网络侧，其特征在于，所述归属网络侧与卫星侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星侧通信连接，所述卫星侧包括若干卫星节点，该装置包括：A satellite network coverage expansion device, applied to the home network side, characterized in that the home network side communicates with the satellite side and the ground side, the ground side includes a service node and an auxiliary node, and the service node is connected to the ground side The auxiliary node is located in the same area, the service node is communicatively connected with the auxiliary node and the home network side, the auxiliary node is communicatively connected with the satellite side, and the satellite side includes several satellite nodes, and the device includes:
    第二获取模块(500)，被配置为获取所述服务节点的卫星节点唤醒信令以及位置信息；A second acquiring module (500), configured to acquire satellite node wake-up signaling and location information of the service node;
    第二发送模块(600)，被配置为根据所述位置信息以及星历信息确定能够与所述辅助节点建立通信链路的所述卫星节点，并向能够与所述辅助节点建立通信链路的该所述卫星节点发送卫星节点传 输信令。The second sending module (600), configured to determine the satellite node capable of establishing a communication link with the auxiliary node according to the position information and ephemeris information, and send a message to the satellite node capable of establishing a communication link with the auxiliary node The satellite node sends satellite node transmission signaling.
  10. 一种卫星网络的覆盖扩展装置，应用于卫星侧，其特征在于，所述卫星侧包括若干卫星节点，所述卫星节点与归属网络侧以及地面侧通信连接，所述地面侧包括服务节点和辅助节点，所述服务节点与所述辅助节点位于同一区域，所述服务节点与所述辅助节点以及所述归属网络侧通信连接，所述辅助节点与所述卫星节点通信连接，该装置包括：A satellite network coverage expansion device, applied to the satellite side, characterized in that the satellite side includes several satellite nodes, and the satellite nodes communicate with the home network side and the ground side, and the ground side includes a service node and an auxiliary node, the service node and the auxiliary node are located in the same area, the service node is communicatively connected to the auxiliary node and the home network side, the auxiliary node is communicatively connected to the satellite node, and the device includes:
    第三获取模块(700)，被配置为通过所述卫星节点获取所述归属网络侧的卫星节点传输信令，并进行激活；其中，所述卫星节点传输信令中包含有所述服务节点的位置信息，其中一个与所述服务节点通信连接的所述辅助节点与所述卫星节点基于所述卫星节点传输信令建立通信链路，且，与卫星节点建立通信链路的所述辅助节点是通过随机码进行竞争确定的；The third acquiring module (700), configured to acquire the satellite node transmission signaling of the home network side through the satellite node, and activate it; wherein, the satellite node transmission signaling includes the service node Location information, wherein one of the auxiliary nodes communicating with the service node establishes a communication link with the satellite node based on the satellite node transmission signaling, and the auxiliary node establishing the communication link with the satellite node is Determined through competition with random codes;
    第三发送模块(800)，被配置为在所述卫星节点激活后，向所述卫星节点传输信令中指示的位置信息范围内的所述辅助节点发送卫星节点传输信令；其中，所述卫星节点响应信令中携带有被配置为对所述卫星节点进行验证的身份标识码。A third sending module (800), configured to send satellite node transmission signaling to the auxiliary nodes within the range of location information indicated in the satellite node transmission signaling after the satellite node is activated; wherein, the The satellite node response signaling carries an identity code configured to verify the satellite node.
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