CN113949434B - Data forwarding addressing method and device for 5G core network and satellite communication baseband system - Google Patents
Data forwarding addressing method and device for 5G core network and satellite communication baseband system Download PDFInfo
- Publication number
- CN113949434B CN113949434B CN202111063830.5A CN202111063830A CN113949434B CN 113949434 B CN113949434 B CN 113949434B CN 202111063830 A CN202111063830 A CN 202111063830A CN 113949434 B CN113949434 B CN 113949434B
- Authority
- CN
- China
- Prior art keywords
- data
- satellite
- network
- service
- core network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 70
- 230000005641 tunneling Effects 0.000 claims abstract description 49
- 238000013507 mapping Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
-
- 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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device
Abstract
The application discloses a data forwarding addressing method and device for a 5G core network and a satellite communication baseband system. Comprising the following steps: acquiring the MAC address of a satellite terminal and WANIP information of the satellite terminal from a network management center in the process of creating the context of the satellite terminal; in the establishment process of the packet data unit session, acquiring a service quality rule of a 5G core network, a service quality flow of the 5G core network, a general packet radio service tunnel protocol tunnel endpoint identifier and a general packet radio service tunnel protocol tunnel transport layer address; when uplink data forwarding addressing is carried out, a data packet to be forwarded of a satellite communication baseband system is sent to a 5G core network through a wireless packet service tunneling protocol; and when downlink data forwarding addressing is carried out, acquiring a data packet to be forwarded from the 5G core network through a wireless packet service tunneling protocol, and sending the data packet to a satellite communication baseband system. The application can realize the data forwarding between the satellite communication baseband system and the 5G communication network.
Description
Technical Field
The application relates to the technical field of communication, in particular to a data forwarding addressing and device of a 5G core network and satellite communication baseband system.
Background
The fifth generation of mobile communication technology (5G) provides reliable global services and mass connectivity for the world and emphasizes the coexistence of multiple access technologies. High-throughput satellites can provide bandwidth, high-capacity communication services that convey information services to users. It is not practical to directly provide services to all users through a satellite network, and the satellite network and a 5G core network need to be integrated, so as to solve the high-capacity cell backhaul and multicast technology in the ground network.
5G provides the opportunity for satellite communications to integrate seamlessly with mainstream telecommunications ecosystems. To achieve this goal, the satellite would need to be a transparent means to make the mating of the satellite communications ground portion with the 5G core network seamless. The 5G core point is to move the overhead satellite to the ground, so as to realize the ground fixed/mobile two-way communication and the Internet service. The satellite and the ground station are combined, then the ground station is built in a large scale, and the wired interface of the external service of the original ground station is changed into a new wireless interface. Satellite communication is convenient for realizing numerous advantages such as global seamless link, and is considered as an essential means for building global personal communication.
Regarding the two methods which are generally considered in the current world and are converged, firstly, a unified air interface protocol is adopted at the design position of a satellite communication network and a 5G network, a space-based network and a foundation network are managed in a unified way, a cooperative service is adopted, a high-integration and convergence design mode is adopted for a terminal, and seamless switching between a low-orbit constellation network and the 5G communication network is realized through a single terminal, which is similar to a SkyTerra system; in addition, the two networks adopt a set of core network, the satellite communication network and the ground network are mutually independent, service data is relayed to the ground gateway station through the communication satellite, and then the ground communication network realizes the transfer distribution of the data.
Disclosure of Invention
The application solves the technical problems that: the method and the device for forwarding and addressing the data of the 5G core network and the satellite communication baseband system are provided for overcoming the defects of the prior art.
The technical scheme of the application is as follows:
in a first aspect, an embodiment of the present application provides a data forwarding addressing method for a 5G core network and a satellite communication baseband system, which is applied to an interconnection gateway, where the satellite communication baseband system includes: the interconnection gateway is respectively in communication connection with the network control center and the network management system, and the method comprises the following steps:
in the process of creating the context of the satellite terminal, acquiring the MAC address of the satellite terminal and WAN IP information of the satellite terminal from a network management center;
in the establishment process of the packet data unit session, acquiring a service quality rule of a 5G core network, and a service quality flow, a general packet radio service tunneling protocol tunnel endpoint identifier and a general packet radio service tunneling protocol tunneling layer address which are sourced from the 5G core network;
when data forwarding addressing of uplink data is carried out, a data packet to be forwarded, which is sent by a satellite communication baseband system, is obtained, and the data packet to be forwarded is sent to the 5G core network through a wireless packet service tunneling protocol;
and when the data forwarding addressing of the downlink data is carried out, acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunneling protocol, and sending the data packet to be forwarded to a satellite communication baseband system.
Optionally, the data forwarding addressing of the uplink data includes:
identifying a BGP protocol transmitted by the network control center and replying;
identifying an ARP (address resolution protocol) request for a satellite terminal gateway and replying;
forwarding the data packet with the destination IP being the internal network element of the satellite network master station in the satellite network through a switch;
the method comprises the steps that a source IP is a data packet of a satellite terminal, a destination IP is not a network element in a satellite network master station, a destination address of the data packet is obtained, a service quality stream is obtained through a service quality rule, and a general packet radio service tunnel protocol tunnel endpoint identifier, a general packet radio service tunnel protocol tunnel transport layer address and a QoS (quality of service) stream identifier are obtained;
and carrying out fragmentation processing on the data packet according to the maximum transmission unit, constructing a general packet radio service tunnel protocol data unit and sending the general packet radio service tunnel protocol data unit to the 5G core network.
Optionally, the data forwarding addressing of the downlink data includes:
the GPRS tunnel protocol data unit to be recombined is recombined and restored into a complete IP message and then sent to a satellite communication baseband system;
if the GPRS tunnel protocol data unit does not need to be recombined, acquiring a destination address of the data packet, and acquiring a service quality stream through a service quality rule;
if the satellite terminal is in the wave beam switching process, configuring a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and carrying out service forwarding;
and if the satellite terminal is not in the beam switching process, acquiring the MAC address from the address resolution protocol mapping table through the destination address, and transmitting the data packet to the network control center.
Optionally, the service forwarding means that the 5G core network configures a forwarding tunnel for the satellite terminal when the satellite terminal is in a beam switching process, obtains a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and forwards the data packet to a destination internet by a source interconnection gateway.
Optionally, the uplink data is a data stream sent by the satellite terminal to the 5G core network direction;
the downlink data is a data stream sent to the satellite terminal direction by the 5G core network.
In a second aspect, an embodiment of the present application provides a data forwarding addressing device for a 5G core network and a satellite communication baseband system, where the data forwarding addressing device is applied to an interconnection gateway, and the satellite communication baseband system includes: the device comprises a network control center and a network management system, wherein the interconnection gateway is respectively in communication connection with the network control center and the network management system, and the device comprises:
the system comprises a MAC address acquisition module, a network management center and a network management center, wherein the MAC address acquisition module is used for acquiring the MAC address of a satellite terminal and WAN IP information of the satellite terminal in the process of creating the context of the satellite terminal;
the system comprises a transport layer address acquisition module, a packet data unit session creation module and a packet data unit session creation module, wherein the transport layer address acquisition module is used for acquiring a service quality rule of a 5G core network, and a service quality stream, a general packet radio service tunnel protocol tunnel endpoint identifier and a general packet radio service tunnel protocol tunnel transport layer address which are sourced from the 5G core network;
the uplink data addressing module is used for acquiring a data packet to be forwarded sent by the satellite communication baseband system when carrying out data forwarding addressing of uplink data, and sending the data packet to be forwarded to the 5G core network through a wireless packet service tunneling protocol;
and the downlink data addressing module is used for acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunnel protocol when the downlink data is forwarded and addressed, and sending the data packet to be forwarded to a satellite communication baseband system.
Optionally, the data forwarding addressing of the uplink data includes:
identifying a BGP protocol transmitted by the network control center and replying;
identifying an ARP (address resolution protocol) request for a satellite terminal gateway and replying;
forwarding the data packet with the destination IP being the internal network element of the satellite network master station in the satellite network through a switch;
the method comprises the steps that a source IP is a data packet of a satellite terminal, a destination IP is not a network element in a satellite network master station, a destination address of the data packet is obtained, a service quality stream is obtained through a service quality rule, and a general packet radio service tunnel protocol tunnel endpoint identifier, a general packet radio service tunnel protocol tunnel transport layer address and a QoS (quality of service) stream identifier are obtained;
and carrying out fragmentation processing on the data packet according to the maximum transmission unit, constructing a general packet radio service tunnel protocol data unit and sending the general packet radio service tunnel protocol data unit to the 5G core network.
Optionally, the data forwarding addressing of the downlink data includes:
the GPRS tunnel protocol data unit to be recombined is recombined and restored into a complete IP message and then sent to a satellite communication baseband system;
if the GPRS tunnel protocol data unit does not need to be recombined, acquiring a destination address of the data packet, and acquiring a service quality stream through a service quality rule;
if the satellite terminal is in the wave beam switching process, configuring a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and carrying out service forwarding;
and if the satellite terminal is not in the beam switching process, acquiring the MAC address from the address resolution protocol mapping table through the destination address, and transmitting the data packet to the network control center.
Optionally, the service forwarding means that the 5G core network configures a forwarding tunnel for the satellite terminal when the satellite terminal is in a beam switching process, obtains a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and forwards the data packet to a destination internet by a source interconnection gateway.
Optionally, the uplink data is a data stream sent by the satellite terminal to the 5G core network direction;
the downlink data is a data stream sent to the satellite terminal direction by the 5G core network.
Compared with the prior art, the application has the advantages that:
according to the data forwarding addressing method and device for the 5G core network and the satellite communication baseband system, which are provided by the embodiment of the application, the connection is established through the interconnection gateway, the mapping from the IP route to the GTP-U tunnel is established, and the paths of the satellite network and the 5G core network are established, so that the data forwarding between the 5G core network and the satellite communication baseband system is realized.
Drawings
Fig. 1 is a flow chart of steps of a data forwarding addressing method for a 5G core network and a satellite communication baseband system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a system architecture according to an embodiment of the present application;
fig. 3 is a schematic diagram of a network architecture according to an embodiment of the present application;
fig. 4 is a schematic diagram of a data transmission module according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a data forwarding addressing device of a 5G core network and a satellite communication baseband system according to an embodiment of the present application.
Detailed Description
Example 1
Referring to fig. 1, a step flow chart of a data forwarding addressing method for a 5G core network and a satellite communication baseband system according to an embodiment of the present application is shown, and as shown in fig. 1, the method may include the following steps:
step 101: in the process of creating the satellite terminal context, the MAC address of the satellite terminal and WAN IP information of the satellite terminal from the network management center are acquired.
In embodiments of the present application, the preparation of data may include a creation process for creating a satellite terminal context and a creation process for a packet data unit session.
In creating the satellite terminal context, the interconnection gateway obtains the satellite terminal MAC address and satellite terminal WAN IP information from the network management center.
Step 102: and in the process of creating the packet data unit session, acquiring a service quality rule of the 5G core network, and obtaining a service quality flow, a general packet radio service tunneling protocol tunnel endpoint identifier and a general packet radio service tunneling protocol tunneling layer address of the 5G core network.
In the process of creating PDU (packet data unit) session, the interconnection gateway acquires QoS (quality of service) rules of a 5G core network acquired by a satellite terminal and acquires QoS (quality of service) flows, GTP (general packet radio service tunneling protocol) tunnel endpoint identifiers and GTP (general packet radio service tunneling protocol) tunnel transport layer addresses of the 5G core network; when the network control center and the interconnection gateway establish Border Gateway Protocol (BGP) connection, after the satellite terminal completes access to the satellite gateway, the satellite gateway obtains the LAN IP and the corresponding rules of the LAN IP and the WAN IP from the network control center in the process that the border network protocol uses route Update (Update) messages to exchange route messages.
Step 103: and when the data forwarding addressing of the uplink data is carried out, acquiring a data packet to be forwarded, which is sent by a satellite communication baseband system, and sending the data packet to be forwarded to the 5G core network through a wireless packet service tunneling protocol.
The data forwarding addressing method of the uplink data is that the interconnection gateway obtains a data packet to be forwarded sent by a satellite communication baseband system and sends the data packet to a core network through a wireless packet service (GPRS) tunneling protocol.
The interconnection gateway realizes the BGP proxy function, recognizes the BGP protocol sent from the network control center and replies; the interconnection gateway realizes the proxy function of the satellite terminal gateway ARP (address resolution protocol), recognizes the ARP (address resolution protocol) request for the satellite terminal gateway, and replies. The interconnection gateway realizes the control plane backhaul service distribution function, and delivers backhaul service managed by the network for the destination IP to the interconnection gateway.
The interconnection gateway processes the data packet of which the destination IP is an internal network element of the satellite network master station and then forwards the data packet in the satellite network through the switch; the interconnection gateway obtains the destination IP of the data packet through QoS (quality of service) rule to obtain the QoS (quality of service) flow, and obtains the GTP (general packet radio service tunneling protocol) tunnel endpoint identification, the GTP (general packet radio service tunneling protocol) tunnel transport layer address and the QoS (quality of service) flow identification. The interconnection gateway constructs G-PDU (general packet radio service tunneling protocol data unit), if the constructed G-PDU (general packet radio service tunneling protocol data unit) exceeds MTU (maximum transmission unit), the data packet is fragmented and sent to the 5G core network.
Step 104: and when the data forwarding addressing of the downlink data is carried out, acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunneling protocol, and sending the data packet to be forwarded to a satellite communication baseband system.
The data forwarding addressing method of the downlink data is that the interconnection gateway obtains a data packet to be forwarded from the 5G core network through a wireless packet service (GPRS) tunnel protocol and sends the data packet to a satellite communication baseband system.
The interconnection gateway establishes a GTP-U (user plane) tunnel, records and manages the end point identification and IP address of the GTP (general packet radio service tunnel protocol) tunnel belonging to a certain terminal, uses the GTP-U (user plane) tunnel to transmit user data and service between the interconnection gateway and the 5G core network, and can provide different QoS (quality of service) flows according to different services.
The interconnection gateway reorganizes the G-PDU (general packet radio service tunneling protocol data unit) to be reorganized, restores the G-PDU to a complete IP message and sends the complete IP message to a satellite communication baseband system; if the G-PDU (general packet radio service tunneling protocol data unit) does not need to be recombined, the gateway obtains the destination address of the data packet and obtains the QoS (quality of service) flow through QoS (quality of service) rules.
If the satellite terminal is in the wave beam switching process, the interconnection gateway configures a forward GTP (general packet radio service tunnel protocol) tunnel endpoint to carry out service forward; if the satellite terminal is not in the beam switching process, the interconnection gateway obtains the MAC from an ARP (address resolution protocol) mapping table through the destination address, and sends the data packet to the network control center.
Next, the technical solution of the embodiment of the present application will be described in detail below with reference to fig. 2 to 5.
As shown in the system architecture diagram of fig. 2, the present application proposes a data forwarding addressing method for fast forwarding user plane data between a 5G core network and a satellite communication baseband system, where the method is set on an internet gateway, and the satellite communication baseband system and the core network establish a connection through the internet gateway. The satellite communication baseband system mainly comprises a network control center and a network management system. The satellite communication baseband system is connected with a satellite terminal through a satellite link. The A3 interface is a user interface between the interconnection gateway and the NCC (network control center) to realize the proxy function of the ARP (address resolution protocol) of the satellite network gateway, and when receiving the ARP (address resolution protocol) request of the satellite network gateway, the A3 interface replies corresponding ARP (address resolution protocol) response. The A3 interface realizes control plane data forwarding, and the data is re-sent after modifying the destination MAC into the MAC address of the interconnection gateway aiming at the return service of which the destination IP is NMS (network management system); when BGP (border gateway protocol) protocol is identified from the data received from the A3 interface, corresponding reply is generated according to the message content. And updates the terminal routing table. The N3 interface is a user interface between the interconnection gateway and the 5G core network, DPDK (data plane development kit) is used for high-speed data forwarding, and GTP-U (GPRS tunneling protocol user plane) protocol stacks are customized and modified according to 5G requirements.
As in the network architecture of fig. 3, the forwarding addressing method of the present application is defined in the network architecture as in the figure. The satellite terminals only use default VLANs (virtual local area networks) and the service gateway is configured on the internet gateway. The direct transmission service of the terminal is converged on the internet gateway, and the destination IP is the service of the network element in the satellite network master station, and the internet gateway is required to forward, so that when the internet gateway is configured in the switch, if the satellite terminal transmits data back to the NMS (network management system), the data are firstly transmitted to the internet gateway, then the internet gateway forwards the data, because the destination IP is different from the internet gateway, the MAC of the internet gateway IP is required to be inquired, then the data are forwarded to the switch by taking the data as the destination MAC of the data, and finally the data are forwarded to the NMS (network management system). Since NMS (network management system) needs to access satellite network and 5G core network at the same time, one switch is added to connect with NMS (network management system), satellite network core switch, 5G core network switch, NMS (network management system) only needs to configure one management IP. The LAN interface is an interface that a satellite terminal is connected with a user equipment terminal through a satellite link; the WAN interface is an interface for connecting the satellite terminal to the satellite communication baseband system.
As shown in the data transmission block diagram of fig. 4, the satellite terminal information, PDU information, ARP mapping table routing table IP routing mapping table needs to be collected. The satellite network maintains an ARP (address resolution protocol) mapping table and an IP routing mapping table: the ARP (address resolution protocol) mapping table is specifically a mapping from a terminal routing item to a terminal MAC address; the contents of the IP routing table include WAN IP, LAN IP, and the like. In the process of creating the satellite terminal context, the interconnection gateway acquires the satellite terminal MAC address and the satellite terminal WAN IP information from the network management center; in the process of creating PDU (protocol data unit) session, the interconnection gateway acquires QoS (quality of service) rules of a 5G core network acquired by a satellite terminal and acquires QoS (quality of service) flows, GTP (general packet radio service tunneling protocol) tunnel endpoint identifiers and GTP (general packet radio service tunneling protocol) tunnel transport layer addresses of the 5G core network; when the network control center and the interconnection gateway establish Border Gateway Protocol (BGP) connection, after the satellite terminal completes access to the satellite gateway, the satellite gateway obtains the LAN IP and the corresponding rules of the LAN IP and the WAN IP from the network control center in the process that the border gateway protocol uses a routing Update (Update) message to exchange routing messages.
The downstream data reach N3 accepting module, N3 accepting module transmits downstream data to IP reorganizing module, IP reorganizing module judges whether downstream data need reorganizing, G-PDU (general packet radio service tunnel protocol data unit) needing reorganizing is reorganized, then transmitted to G-PDU analyzing module, G-PDU analyzing module restores it to complete IP message according to the prepared data obtained before; if the G-PDU (general packet radio service tunneling protocol data unit) does not need to be reassembled, the G-PDU parsing module obtains the destination address of the data packet and obtains the QoS (quality of service) flow through QoS (quality of service) rules: if the satellite terminal is in the wave beam switching process, the interconnection gateway configures a forward GTP (general packet radio service tunnel protocol) tunnel endpoint to carry out service forward; if the satellite terminal is not in the beam switching process, the interconnection gateway obtains the MAC from an ARP (address resolution protocol) mapping table through the destination address. The data is transferred to the A3 transmitting module and transferred to the corresponding location by the same.
The uplink data arrives at an A3 receiving module, and the A3 receiving module recognizes an ARP (address resolution protocol) request aiming at a satellite terminal gateway through preparing data and replies; a3, the receiving module forwards the data packet of which the destination IP is the internal network element of the satellite network master station through the switch after preparing the data; the A3 receiving module sends the downlink data to the G-PDU constructing module by preparing data packets of which the source IP is a satellite terminal and the destination IP is not an internal network element of the satellite network master station, and the G-PDU constructing module acquires the destination address of the data packets, acquires QoS (quality of service) flow through QoS (quality of service) rules, and acquires GTP (general packet radio service tunneling protocol) tunnel endpoint identification, GTP (general packet radio service tunneling protocol) tunnel transport layer address and QoS (quality of service) flow identification. The IP segmentation module carries out segmentation processing on the data packet according to the MTU (maximum transmission unit) and restores the data packet into a complete IP message. The data is transferred to the N3 transmitting module and is transferred to the corresponding position by the N3 transmitting module.
The data forwarding addressing method of the 5G core network and the satellite communication baseband system provided by the embodiment of the application obtains the MAC address of the satellite terminal and WAN IP information of the satellite terminal from the network management center in the process of creating the context of the satellite terminal; in the establishment process of the packet data unit session, acquiring a service quality rule of a 5G core network, and a service quality flow, a general packet radio service tunneling protocol tunnel endpoint identifier and a general packet radio service tunneling protocol tunneling layer address which are sourced from the 5G core network; when data forwarding addressing of uplink data is carried out, a data packet to be forwarded, which is sent by a satellite communication baseband system, is obtained, and the data packet to be forwarded is sent to the 5G core network through a wireless packet service tunneling protocol; and when the data forwarding addressing of the downlink data is carried out, acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunneling protocol, and sending the data packet to be forwarded to a satellite communication baseband system. According to the embodiment of the application, the connection is established through the interconnection gateway, the mapping from the IP route to the GTP-U tunnel is established, and the paths of the satellite network and the 5G core network are established, so that the data forwarding between the 5G core network and the satellite communication baseband system is realized.
Example two
Referring to fig. 5, a schematic structural diagram of a data forwarding addressing device of a 5G core network and a satellite communication baseband system according to an embodiment of the present application is shown, where, as shown in fig. 5, the device may include the following modules:
the MAC address obtaining module 510 is configured to obtain, in a process of creating a context of the satellite terminal, a MAC address of the satellite terminal and WAN IP information of the satellite terminal from the network management center;
a transport layer address obtaining module 520, configured to obtain, during a packet data unit session creation process, a quality of service rule of a 5G core network, and a quality of service flow, a general packet radio service tunneling protocol tunnel endpoint identifier, and a general packet radio service tunneling protocol tunneling layer address of the 5G core network;
the uplink data addressing module 530 is configured to obtain a data packet to be forwarded sent by the satellite communication baseband system when performing data forwarding addressing of uplink data, and send the data packet to be forwarded to the 5G core network through a wireless packet service tunneling protocol;
and the downlink data addressing module 540 is configured to obtain a data packet to be forwarded from the 5G core network through the wireless packet service tunneling protocol when performing data forwarding addressing of downlink data, and send the data packet to be forwarded to a satellite communication baseband system.
Optionally, the data forwarding addressing of the uplink data includes:
identifying a BGP protocol transmitted by the network control center and replying;
identifying an ARP (address resolution protocol) request for a satellite terminal gateway and replying;
forwarding the data packet with the destination IP being the internal network element of the satellite network master station in the satellite network through a switch;
the method comprises the steps that a source IP is a data packet of a satellite terminal, a destination IP is not a network element in a satellite network master station, a destination address of the data packet is obtained, a service quality stream is obtained through a service quality rule, and a general packet radio service tunnel protocol tunnel endpoint identifier, a general packet radio service tunnel protocol tunnel transport layer address and a QoS (quality of service) stream identifier are obtained;
and carrying out fragmentation processing on the data packet according to the maximum transmission unit, constructing a general packet radio service tunnel protocol data unit and sending the general packet radio service tunnel protocol data unit to the 5G core network.
Optionally, the data forwarding addressing of the downlink data includes:
the GPRS tunnel protocol data unit to be recombined is recombined and restored into a complete IP message and then sent to a satellite communication baseband system;
if the GPRS tunnel protocol data unit does not need to be recombined, acquiring a destination address of the data packet, and acquiring a service quality stream through a service quality rule;
if the satellite terminal is in the wave beam switching process, configuring a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and carrying out service forwarding;
and if the satellite terminal is not in the beam switching process, acquiring the MAC address from the address resolution protocol mapping table through the destination address, and transmitting the data packet to the network control center.
Optionally, the service forwarding means that the 5G core network configures a forwarding tunnel for the satellite terminal when the satellite terminal is in a beam switching process, obtains a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and forwards the data packet to a destination internet by a source interconnection gateway.
Optionally, the uplink data is a data stream sent by the satellite terminal to the 5G core network direction;
the downlink data is a data stream sent to the satellite terminal direction by the 5G core network.
The data forwarding addressing device of the 5G core network and the satellite communication baseband system acquires the MAC address of the satellite terminal and WAN IP information of the satellite terminal from the network management center in the process of creating the context of the satellite terminal; in the establishment process of the packet data unit session, acquiring a service quality rule of a 5G core network, and a service quality flow, a general packet radio service tunneling protocol tunnel endpoint identifier and a general packet radio service tunneling protocol tunneling layer address which are sourced from the 5G core network; when data forwarding addressing of uplink data is carried out, a data packet to be forwarded, which is sent by a satellite communication baseband system, is obtained, and the data packet to be forwarded is sent to the 5G core network through a wireless packet service tunneling protocol; and when the data forwarding addressing of the downlink data is carried out, acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunneling protocol, and sending the data packet to be forwarded to a satellite communication baseband system. According to the embodiment of the application, the connection is established through the interconnection gateway, the mapping from the IP route to the GTP-U tunnel is established, and the paths of the satellite network and the 5G core network are established, so that the data forwarding between the 5G core network and the satellite communication baseband system is realized.
The described embodiments of the present application will enable those skilled in the art to more fully understand the application, but do not limit it in any way. Accordingly, it will be understood by those skilled in the art that the present application may be modified or equivalents substituted; all technical solutions and modifications thereof that do not depart from the spirit and technical essence of the application should be included in the protection scope of the patent of the application.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (8)
1. A data forwarding addressing method of a 5G core network and a satellite communication baseband system is applied to an interconnection gateway, and the satellite communication baseband system comprises the following steps: the interconnection gateway is respectively in communication connection with the network control center and the network management system, and the method is characterized by comprising the following steps:
in the process of creating the context of the satellite terminal, acquiring the MAC address of the satellite terminal and WAN IP information of the satellite terminal from a network management center;
in the establishment process of the packet data unit session, acquiring a service quality rule of a 5G core network, and a service quality flow, a general packet radio service tunneling protocol tunnel endpoint identifier and a general packet radio service tunneling protocol tunneling layer address which are sourced from the 5G core network;
when data forwarding addressing of uplink data is carried out, a data packet to be forwarded, which is sent by a satellite communication baseband system, is obtained, and the data packet to be forwarded is sent to the 5G core network through a wireless packet service tunneling protocol; wherein, the data forwarding addressing of the uplink data includes: identifying a BGP protocol transmitted by the network control center and replying; identifying an ARP address resolution protocol request aiming at a satellite terminal gateway, and replying; forwarding the data packet with the destination IP being the internal network element of the satellite network master station in the satellite network through a switch; the method comprises the steps that a source IP is a data packet of a satellite terminal, a destination IP is not a network element in a satellite network master station, a destination address of the data packet is obtained, a service quality stream is obtained through a service quality rule, and a general packet wireless service tunnel protocol tunnel endpoint identifier, a general packet wireless service tunnel protocol tunnel transport layer address and a QoS service quality stream identifier are obtained; the data packet is fragmented according to the maximum transmission unit, a general packet radio service tunnel protocol data unit is constructed and sent to the 5G core network;
and when the data forwarding addressing of the downlink data is carried out, acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunneling protocol, and sending the data packet to be forwarded to a satellite communication baseband system.
2. The method of claim 1, wherein the data forwarding addressing of the downstream data comprises:
the GPRS tunnel protocol data unit to be recombined is recombined and restored into a complete IP message and then sent to a satellite communication baseband system;
if the GPRS tunnel protocol data unit does not need to be recombined, acquiring a destination address of the data packet, and acquiring a service quality stream through a service quality rule;
if the satellite terminal is in the wave beam switching process, configuring a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and carrying out service forwarding;
and if the satellite terminal is not in the beam switching process, acquiring the MAC address from the address resolution protocol mapping table through the destination address, and transmitting the data packet to the network control center.
3. The method according to claim 2, wherein the service forwarding means that, when a satellite terminal is in a beam switching process, the 5G core network configures a forwarding tunnel for the satellite terminal, obtains a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and forwards a data packet to a destination internet by a source interconnection gateway.
4. The method according to claim 1, wherein the uplink data is a data stream sent by the satellite terminal in a direction toward the 5G core network;
the downlink data is a data stream sent to the satellite terminal direction by the 5G core network.
5. A data forwarding addressing device of a 5G core network and a satellite communication baseband system, applied to an interconnection gateway, the satellite communication baseband system comprising: the device is characterized by comprising a network control center and a network management system, wherein the interconnection gateway is respectively in communication connection with the network control center and the network management system, and the device comprises:
the system comprises a MAC address acquisition module, a network management center and a network management center, wherein the MAC address acquisition module is used for acquiring the MAC address of a satellite terminal and WAN IP information of the satellite terminal in the process of creating the context of the satellite terminal;
the system comprises a transport layer address acquisition module, a packet data unit session creation module and a packet data unit session creation module, wherein the transport layer address acquisition module is used for acquiring a service quality rule of a 5G core network, and a service quality stream, a general packet radio service tunnel protocol tunnel endpoint identifier and a general packet radio service tunnel protocol tunnel transport layer address which are sourced from the 5G core network;
the uplink data addressing module is used for acquiring a data packet to be forwarded sent by the satellite communication baseband system when carrying out data forwarding addressing of uplink data, and sending the data packet to be forwarded to the 5G core network through a wireless packet service tunneling protocol; wherein, the data forwarding addressing of the uplink data includes: identifying a BGP protocol transmitted by the network control center and replying; identifying an ARP address resolution protocol request aiming at a satellite terminal gateway, and replying; forwarding the data packet with the destination IP being the internal network element of the satellite network master station in the satellite network through a switch; the method comprises the steps that a source IP is a data packet of a satellite terminal, a destination IP is not a network element in a satellite network master station, a destination address of the data packet is obtained, a service quality stream is obtained through a service quality rule, and a general packet wireless service tunnel protocol tunnel endpoint identifier, a general packet wireless service tunnel protocol tunnel transport layer address and a QoS service quality stream identifier are obtained; the data packet is fragmented according to the maximum transmission unit, a general packet radio service tunnel protocol data unit is constructed and sent to the 5G core network;
and the downlink data addressing module is used for acquiring a data packet to be forwarded from the 5G core network through the wireless packet service tunnel protocol when the downlink data is forwarded and addressed, and sending the data packet to be forwarded to a satellite communication baseband system.
6. The apparatus of claim 5, wherein the data forwarding addressing of the downstream data comprises:
the GPRS tunnel protocol data unit to be recombined is recombined and restored into a complete IP message and then sent to a satellite communication baseband system;
if the GPRS tunnel protocol data unit does not need to be recombined, acquiring a destination address of the data packet, and acquiring a service quality stream through a service quality rule;
if the satellite terminal is in the wave beam switching process, configuring a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and carrying out service forwarding;
and if the satellite terminal is not in the beam switching process, acquiring the MAC address from the address resolution protocol mapping table through the destination address, and transmitting the data packet to the network control center.
7. The apparatus of claim 6, wherein the service forwarding means that, when a satellite terminal is in a beam switching process, the 5G core network configures a forwarding tunnel for the satellite terminal, obtains a tunnel endpoint of a forwarding general packet radio service tunnel protocol, and forwards a data packet to a destination internet by a source interconnection gateway.
8. The apparatus of claim 5, wherein the uplink data is a data stream sent by the satellite terminal in a direction toward the 5G core network;
the downlink data is a data stream sent to the satellite terminal direction by the 5G core network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111063830.5A CN113949434B (en) | 2021-09-10 | 2021-09-10 | Data forwarding addressing method and device for 5G core network and satellite communication baseband system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111063830.5A CN113949434B (en) | 2021-09-10 | 2021-09-10 | Data forwarding addressing method and device for 5G core network and satellite communication baseband system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113949434A CN113949434A (en) | 2022-01-18 |
| CN113949434B true CN113949434B (en) | 2023-11-10 |
Family
ID=79328356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111063830.5A Active CN113949434B (en) | 2021-09-10 | 2021-09-10 | Data forwarding addressing method and device for 5G core network and satellite communication baseband system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113949434B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114726820B (en) * | 2022-03-16 | 2023-12-29 | 中国电子科技集团公司第五十四研究所 | ARP protocol optimization method suitable for on-board IP route switching |
| CN117081640B (en) * | 2023-07-10 | 2024-04-09 | 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) | Multi-protocol star warship-ground integrated gateway design method based on frame header compression |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8644339B1 (en) * | 2011-12-01 | 2014-02-04 | Juniper Networks, Inc. | In-line packet reassembly within a mobile gateway |
| CN112994775A (en) * | 2021-02-04 | 2021-06-18 | 亚太卫星宽带通信（深圳）有限公司 | Method for fusing GEO satellite access network and 5G core network |
| CN113225836A (en) * | 2021-04-30 | 2021-08-06 | 广州爱浦路网络技术有限公司 | Communication method, system, device and storage medium for low earth orbit satellite and 5G core network |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10057391B2 (en) * | 2014-12-27 | 2018-08-21 | Hughes Network Systems, Llc | Acceleration of GTP traffic flows, over a satellite link, in a terrestrial wireless mobile communications system |
| CN112789885B (en) * | 2018-09-27 | 2022-11-29 | 中兴通讯股份有限公司 | Method and system for processing user equipment associated information |
| US11387895B2 (en) * | 2018-12-31 | 2022-07-12 | Hughes Network Systems, Llc | Communication method and communication system |
| US11252083B2 (en) * | 2019-02-07 | 2022-02-15 | Lockheed Martin Corporation | Data packet forwarding in an NGSO satellite network |
-
2021
- 2021-09-10 CN CN202111063830.5A patent/CN113949434B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8644339B1 (en) * | 2011-12-01 | 2014-02-04 | Juniper Networks, Inc. | In-line packet reassembly within a mobile gateway |
| CN112994775A (en) * | 2021-02-04 | 2021-06-18 | 亚太卫星宽带通信（深圳）有限公司 | Method for fusing GEO satellite access network and 5G core network |
| CN113225836A (en) * | 2021-04-30 | 2021-08-06 | 广州爱浦路网络技术有限公司 | Communication method, system, device and storage medium for low earth orbit satellite and 5G core network |
Non-Patent Citations (1)
| Title |
|---|
| 范继等.基于4G体制的LEO卫星移动通信系统构架设计.《空间电子技术》.2019,(第02期),第20-25页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113949434A (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7079866B2 (en) | Packet processing method and device | |
| CN111313961B (en) | Routing control method suitable for space-ground biplane network architecture | |
| JP3684387B2 (en) | Packet radio system and method for routing data packets independently of protocol in a packet radio network | |
| US8023433B2 (en) | Relay device, wireless communication system and multicast relay method | |
| US8139501B2 (en) | Relay device, wireless communication system and multicast relay method | |
| CN111342886B (en) | Route control method suitable for satellite network user to remotely access ground network | |
| CN113949434B (en) | Data forwarding addressing method and device for 5G core network and satellite communication baseband system | |
| JP5230799B2 (en) | Method, apparatus and system for equalizing flow capacity | |
| CN113014496B (en) | Central control-based PIM-SSM multicast label routing method | |
| EP1969769B1 (en) | Emulation device and method for supporting IPv6 in wibro terminal | |
| CN113949433B (en) | Interconnection gateway for connecting satellite communication baseband system and 5G core network | |
| US20080113615A1 (en) | Method for forwarding mac protocol data units in a mobile radio communication network, corresponding communication end point and relay station | |
| CN103200283B (en) | The implementation method of many relay wireless communications system and this Systems Air Interface IPization | |
| WO2019183919A1 (en) | Method and apparatus for converged networking | |
| EP2524537B1 (en) | Method, network access device and mobile device for providing access to public packet networks from a local environment | |
| CN112929275B (en) | Central control-based PIM-SM multicast label routing method | |
| CN113473538B (en) | Wireless convergence network-based shunt control method and system | |
| CN113784374A (en) | Device and method for deep data processing of base station | |
| CN113824640B (en) | Satellite network label switching method for complexity in satellite | |
| US20230074963A1 (en) | Process and system for migrating satellite networks to 3gpp 5g architecture | |
| CN114567370B (en) | Distributed routing communication method for high-rail backbone network | |
| US20190190821A1 (en) | Method of optimizing spectral efficiency in an mpls interconnection context | |
| CN102647768B (en) | Message transmitting method and device based on LTE-LAN(long term evolution-local area network) | |
| Zhao et al. | Networking in space terrestrial integrated networks | |
| KR20120002424A (en) | Communication node and communication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |