CN115065982A - Method and system for improving 5G service transmission rate based on satellite link - Google Patents

Method and system for improving 5G service transmission rate based on satellite link Download PDF

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CN115065982A
CN115065982A CN202210551204.9A CN202210551204A CN115065982A CN 115065982 A CN115065982 A CN 115065982A CN 202210551204 A CN202210551204 A CN 202210551204A CN 115065982 A CN115065982 A CN 115065982A
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data packet
tcp
gtp
packet
header
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王云飞
李晓晨
郝晓强
郭晓龙
孟祥宇
高二东
朱珊
张航
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Space Star Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/163—In-band adaptation of TCP data exchange; In-band control procedures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/164—Adaptation or special uses of UDP protocol
    • 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

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Abstract

The invention discloses a method and a device for improving the transmission rate of 5G services based on a satellite link. The method comprises the following steps: packaging the TCP service data initiated by the received terminal through the base station to generate a GTP data packet, and sending the GTP data packet to the first TCP acceleration equipment; processing the GTP data packet by the first TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the second TCP acceleration equipment; restoring the optimized data packet through a second TCP acceleration device based on packet header removing technology and inclusion merging technology to obtain a GTP data packet, and sending the GTP data packet to a core network; and restoring the GTP data packet through a core network to obtain an original TCP data packet, and sending the original TCP data packet to the Internet. The invention can reduce the flow consumption of the satellite link and meet the requirement of the satellite transmission rate.

Description

Method and system for improving 5G service transmission rate based on satellite link
Technical Field
The invention relates to the technical field of network optimization, in particular to a method and a system for improving the transmission rate of 5G services based on a satellite link.
Background
In recent years, mobile communication technology has been rapidly developed, and a fifth generation mobile communication network (5G) has been produced and is now in a popularization stage. Compared with the former four-generation mobile network, the 5G network has the characteristics of high network speed, low delay and large capacity. The International Telecommunications Union (ITU) also defines enhanced mobile broadband (3D, ultra-high definition video, etc.), mass machine-type communication, and ultra-reliable low-latency communication (unmanned, industrial automation, etc.) as three major application scenarios of 5G.
Compared with a ground mobile communication network, the satellite communication has the advantages of wide coverage range, difficulty in being influenced by geological disasters, high construction speed, low construction cost and the like. Therefore, in remote areas, offshore areas, air areas, and the like, which cannot be covered by a ground network, 5G communication can be performed using satellites. In addition, as emergency communication services (voice, video, file transmission and the like) are continuously increased, the emergency communication also needs to provide 5G services, so that the satellite is required to be capable of transmitting the 5G services, the satellite communication system and the 5G are mutually fused, the advantages and the disadvantages are made up, and various service requirements of everywhere users are met.
In order to ensure reliable data transmission in a satellite network, a TCP protocol must be adopted, and as the GEO satellite has inherent characteristics of high delay, high error rate, asymmetric uplink and downlink bandwidths and the like, the TCP protocol cannot work efficiently, and particularly in a satellite link with hundreds of Mbps bandwidth, the effect of a long fertilizer pipeline (high delay/high bandwidth) is more obvious, so that the bandwidth utilization rate is extremely low (generally lower than 1% under a 64KB transceiving window).
Disclosure of Invention
The invention solves the technical problems that: the method and the system for improving the transmission rate of the 5G service based on the satellite link are provided to overcome the defects of the prior art.
The technical solution of the invention is as follows:
in a first aspect, an embodiment of the present invention provides a method for increasing a transmission rate of a 5G service based on a satellite link, where a first TCP acceleration device is disposed on a small station side, and a second TCP acceleration device is disposed on a gateway station side, where the method includes:
packaging the TCP service data initiated by the received terminal through a base station to generate a GTP data packet, and sending the GTP data packet to the first TCP acceleration equipment;
processing the GTP data packet by the first TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the second TCP acceleration equipment;
the optimized data packet is restored through the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to obtain a GTP data packet, and the GTP data packet is sent to a core network;
and restoring the GTP data packet through the core network to obtain an original TCP data packet, and sending the original TCP data packet to the Internet.
Optionally, the processing, by the first TCP acceleration device, the GTP data packet based on a packet header removing technique and a packet merging and splitting technique to generate an optimized data packet includes:
merging and splitting the GTP data packet by the first TCP acceleration equipment based on a packet merging and splitting technology to generate a split data packet;
and optimizing the IPv4 packet header, the UDP header and the GTP header of the split data packet by the first TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
Optionally, the restoring, by the second TCP acceleration device, the split data packet based on a packet header removing technology and an inclusion and splitting technology to obtain a GTP data packet includes:
and restoring the IPv4 packet header, the UDP header and the GTP header of the optimized data packet by the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to generate the GTP data packet.
In a second aspect, an embodiment of the present invention provides a method for increasing a 5G service transmission rate based on a satellite link, where a first TCP acceleration device is disposed on a small station side, and a second TCP acceleration device is disposed on a gateway station side, where the method includes:
after a core network receives a TCP data packet sent by the Internet, the core network encapsulates the TCP data packet into a GTP data packet and sends the GTP data packet to the second TCP acceleration equipment;
processing the GTP data packet by the second TCP acceleration device based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the first TCP acceleration device;
restoring the optimized data packet through the first TCP accelerating device to obtain a GTP data packet, and sending the GTP data packet to a base station;
and restoring the GTP data packet through the base station to generate an original TCP data packet, and sending the original TCP data packet to a terminal.
Optionally, the processing, by the second TCP acceleration device, the GTP data packet based on a packet header removing technique and a packet merging and splitting technique to generate an optimized data packet includes:
merging and splitting the GTP data packet by the second TCP acceleration equipment based on a packet merging and splitting technology to generate a processed data packet;
and optimizing the IPv4 packet header, the UDP header and the GTP header of the processed data packet by the second TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
In a third aspect, an embodiment of the present invention provides a system for improving a 5G service transmission rate based on a satellite link, where the system includes: the system comprises a base station, a small station, a gateway station, a core network and the Internet, wherein a first TCP accelerating device is arranged at the side of the small station, a second TCP accelerating device is arranged at the side of the gateway station, wherein,
the base station is used for encapsulating the TCP service data initiated by the received terminal, generating a GTP data packet and sending the GTP data packet to the first TCP acceleration device;
the small station is used for processing the GTP data packet through the first TCP acceleration equipment based on a packet header removing technology and a packet inclusion and splitting technology to generate an optimized data packet and sending the optimized data packet to the second TCP acceleration equipment;
the gateway station is configured to perform restoration processing on the optimized data packet through the second TCP acceleration device based on a packet header removal technology and an inclusion and splitting technology to obtain a GTP data packet, and send the GTP data packet to a core network;
and the core network is used for restoring the GTP data packet to obtain an original TCP data packet and sending the original TCP data packet to the Internet.
Optionally, the small station is specifically configured to merge and split the GTP data packet by using the first TCP acceleration device based on a packet merging and splitting technique, so as to generate a split data packet; and optimizing the IPv4 packet header, the UDP header and the GTP header of the split data packet by the first TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
Optionally, the gateway station is specifically configured to perform, by the second TCP acceleration device, reduction processing on the IPv4 packet header, the UDP header, and the GTP header of the optimized packet based on a packet header removing technique and a packet enclosing and splitting technique, so as to generate the GTP data packet.
In a fourth aspect, an embodiment of the present invention provides a system for increasing a transmission rate of a 5G service based on a satellite link, where the system includes: the system comprises a base station, a small station, a gateway station, a core network and the Internet, wherein a first TCP accelerating device is arranged at the side of the small station, a second TCP accelerating device is arranged at the side of the gateway station,
the core network is used for encapsulating the TCP data packet into a GTP data packet after receiving the TCP data packet sent by the Internet, and sending the GTP data packet to the second TCP acceleration equipment;
the gateway station is configured to process, by the second TCP acceleration device, the GTP data packet based on a packet header removing technique and an inclusion and splitting technique to generate an optimized data packet, and send the optimized data packet to the first TCP acceleration device;
the small station is used for restoring the optimized data packet through the first TCP acceleration equipment to obtain a GTP data packet and sending the GTP data packet to a base station;
and the base station is used for restoring the GTP data packet, generating an original TCP data packet and sending the original TCP data packet to the terminal.
Optionally, the gateway station is specifically configured to perform merging and splitting processing on the GTP data packet by using the second TCP acceleration device based on a packet merging and splitting technique, so as to generate a processed data packet; and optimizing the IPv4 packet header, the UDP header and the GTP header of the processed data packet by the second TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
Compared with the prior art, the invention has the advantages that:
1. in the embodiment of the invention, the acceleration equipment is used for acting the TCP connection between the user side and the Internet side, and the data transmission and response between the TCP acceleration equipment are controlled by the acceleration equipment. Although RTT is about 600ms, after TCP acceleration, the maximum theoretical rate is about 1.7GBps, and the requirement of satellite transmission rate is completely met;
2. after passing through the TCP acceleration equipment, the IP and port information of the user cannot be changed, and the method is completely transparent to the user;
3. by removing the packet header mechanism and the packet inclusion and separation mechanism, the service transmission time is saved, the transmission rate is improved, and the satellite link flow consumption is reduced.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for increasing a transmission rate of a 5G service based on a satellite link according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a service data transmission process according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a satellite link transmitting 5G service according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a GTP packet format according to an embodiment of the present invention;
fig. 5 is a schematic diagram of data interaction in a technique for removing a packet header according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating comparison between an original data packet and a data packet without a header according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an inclusion and split technique MTU negotiation provided in an embodiment of the present invention;
fig. 8 is a schematic diagram of a TCP acceleration device processing a 5G service flow according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating steps of another method for increasing a transmission rate of a 5G service based on a satellite link according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a system for increasing a transmission rate of a 5G service based on a satellite link according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another system for increasing a transmission rate of a 5G service based on a satellite link according to an embodiment of the present invention.
Detailed Description
Example one
Referring to fig. 1, a flowchart illustrating steps of a method for improving a transmission rate of 5G services based on a satellite link according to an embodiment of the present invention is shown, where a first TCP acceleration device is disposed on a small station side, and a second TCP acceleration device is disposed on a gateway station side, as shown in fig. 1, the method may include the following steps:
step 101: and encapsulating the received TCP service data initiated by the terminal through the base station to generate a GTP data packet, and sending the GTP data packet to the first TCP acceleration equipment.
The embodiment of the invention is described for the transmission of uplink service data.
As shown in fig. 3, in the satellite Transmission 5G service, a TCP (Transmission Control Protocol) service initiated by a Mobile phone first arrives at a base station, and is encapsulated into a GTP (GPRS tunneling Protocol, a set of IP-based upper layer protocols) Protocol by the base station, and then, after arriving at a small station, the GTP packet arrives at a gateway station along a satellite link, and after coming out from the gateway station, the GTP packet arrives at a core network side through a dedicated line, and the core network decapsulates the GTP packet, and restores the GTP packet to a normal data packet of a user, and finally arrives at the internet. In the whole process, the GTP packets are transmitted in a satellite communication system, and TCP acceleration equipment is deployed at both a small station and a gateway station end to provide a bilateral acceleration function.
The format of the GTP-U protocol may be as shown in table 1 below:
table 1: GTP-U protocol format
Figure BDA0003650104610000061
Figure BDA0003650104610000071
As shown in the above expression 1, the satellite communication system mainly comprises small stations and gateway stations, and when transmitting 5G traffic, the GTP-U protocol is adopted, which is mainly optimized for the TCP protocol carried by the GTP-U.
Fig. 4 shows a GTP packet format. TCP services requested by a user are encapsulated into GTP packets through a base station, after the GTP packets reach the TCP accelerating equipment at the small station side, the TCP accelerating equipment needs to analyze layer by layer to a GTP layer, then an inner layer IP is analyzed, the TCP is judged to be the TCP, an accelerating flow is carried out, and otherwise, transparent transmission is carried out. Various mechanisms are designed in the acceleration device to ensure the rapidity and the reliability of transmission, and mainly comprise: 1) enhancing a CUBIC algorithm; 2) improving the BBR algorithm; 3) improving a Rack algorithm; 4) improving a slow start algorithm; 5) an adaptive ACK adjustment algorithm. The first two algorithms optimize congestion control, the third algorithm optimizes packet loss fast retransmission, the fourth algorithm optimizes slow start, and the fifth algorithm optimizes a transceiving asymmetric network.
Fig. 5 is a data interaction diagram of the technique of removing the packet header. When the client and the server transmit the TCP, three-way handshake is carried out firstly, then the client sends a request, the server responds and sends data to the client, and finally, four-way waving is carried out to finish the removal of the TCP connection, so that the TCP connection is finished interactively. By the chance of three times of handshake, after the small station receives SYN packet sent by the base station in an acceleration mode, the SYN packet is forwarded to the gateway station in an acceleration mode, the gateway station accelerates to return (SYN, ACK) to the small station in an acceleration mode, so that the information of outer layer IP heads, UDP heads and GTP heads of the base station and a core network is stored in the small station acceleration mode and the gateway station acceleration mode, and when data transmission is carried out subsequently, only source IP in the outer layer IP heads, destination IP and TEID information in GTP-U heads need to be stored, and different TCP connections are convenient to distinguish. Since the GTP-U supports extended headers, the minimum length is 8 bytes, which reduces the header overhead by shortening the length of at least 36 bytes to 12 bytes.
Fig. 6 is a comparison of the original packet and the packet with the header removed. The base station and the small station are accelerated, the gateway station is accelerated, and the header of the data packet transmitted by the core network side is unchanged, as shown in the left half of fig. 6. The packet header of the three-way handshake phase of the small station acceleration and the gateway station acceleration is unchanged, and the format of the packet header of the data transmission phase is shown in the right half part of fig. 6. And storing the outer layer source IP, the target IP and the TEID information in front of Payload, so that when the small station receives a data packet sent by the gateway station in an acceleration mode, the small station analyzes the data packet to obtain an outer layer source IP, a target IP, the TEID and an inner layer quadruple, then searches a certain TCP connection information of a certain tunnel according to the heptatuple, and finally sends the recovered outer layer IP head, UDP head and GTP head to the base station.
Fig. 7 is an inclusion and splitting technique MTU negotiation diagram. After receiving the data packet from the core network in an accelerated manner, the gateway station merges several small packets, then performs accelerated processing as a big packet after merging, splits the big packet according to the maximum MTU (1500 bytes for Ethernet) after processing, and sends the big packet to the air interface. Thus, each packet sent to the air interface is transmitted according to the maximum MTU (1500 bytes), after the small station receives the data packet in an accelerating way, the small station firstly carries out grouping, and the data packet sent to the base station is split according to the MTU negotiated by the base station side and the small station in an accelerating way.
Fig. 8 is a flow chart of TCP acceleration device processing 5G traffic. After receiving the data packet, the acceleration device firstly analyzes the data packet, if the data packet is a TCP, the TCP receiving processing flow is carried out, otherwise, the transparent transmission is carried out, then whether the TCP packet carries data is judged, if the TCP packet carries data, the packet merging flow, the TCP acceleration flow, the TCP sending flow and the packet splitting flow are successively carried out, the packet header flow is removed, and finally the data packet is sent, otherwise, the TCP acceleration flow and the TCP sending flow are carried out.
In this embodiment, TCP acceleration devices may be respectively disposed on the small station side and the gateway station side, where the TCP acceleration device disposed on the small station side is a first TCP acceleration device, and the TCP acceleration device disposed on the gateway station side is a second TCP acceleration device.
For uplink traffic data, TCP traffic data may be initiated by the terminal to the base station.
As shown in fig. 2, after receiving the TCP service data initiated by the terminal, the base station may perform encapsulation processing on the TCP service data to generate a GTP data packet, and send the GTP data packet to the first TCP acceleration device.
Step 102: and processing the GTP data packet by the first TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the second TCP acceleration equipment.
On the small station side, the GTP data packet can be processed by the first TCP acceleration device based on the packet header removing technology and the packet enclosing and splitting technology to generate optimized data, and the optimized data packet is sent to the second TCP acceleration device.
A packet header removing technology: each node identifies a GTP-U tunnel with a TEID, an IP address, and a UDP port number. The destination port number of the GTP-U message UDP is 2152, 36 bytes of the IPv4 packet header, the UDP header and the GTP header on the outermost layer can be optimized through the TCP acceleration equipment, and only 12 bytes are needed for normal transmission.
Package merging and splitting technology: after receiving a data packet sent by a base station, the small station acceleration equipment combines a plurality of small packets, then takes the combined small packets as a big packet for acceleration processing, splits the big packet according to the maximum MTU (1500 bytes for Ethernet) after processing, and sends the big packet to an air interface.
Step 103: and restoring the optimized data packet by the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to obtain a GTP data packet, and sending the GTP data packet to a core network.
At the gateway station side, the optimized data packet can be restored through the second TCP acceleration device based on the packet header removing technology and the inclusion and splitting technology to obtain a GTP data packet, and the GTP data packet is sent to the core network.
Step 104: and restoring the GTP data packet through the core network to obtain an original TCP data packet, and sending the original TCP data packet to the Internet.
After the core network receives the GTP data packet, the core network may perform reduction processing on the GTP data packet to obtain an original TCP data packet, and send the original TCP data packet to the internet.
Example two
Referring to fig. 9, a flowchart illustrating steps of another method for improving a transmission rate of 5G services based on a satellite link according to an embodiment of the present invention is shown, where a first TCP acceleration device is disposed on a small station side, and a second TCP acceleration device is disposed on a gateway station side, as shown in fig. 9, the method may include the following steps:
step 901: after the core network receives the TCP data packet sent by the Internet, the core network encapsulates the TCP data packet into a GTP data packet and sends the GTP data packet to the second TCP acceleration device.
The embodiment of the invention is described aiming at the transmission flow of the downlink TCP service data.
In this embodiment, TCP acceleration devices may be respectively disposed on the small station side and the gateway station side, where the TCP acceleration device disposed on the small station side is a first TCP acceleration device, and the TCP acceleration device disposed on the gateway station side is a second TCP acceleration device.
For downlink traffic data, TCP packets may be sent from the internet to the core network.
After the core network receives the TCP data packet sent by the internet, the core network may encapsulate the TCP data packet into a GTP data packet, and then send the GTP data packet obtained by encapsulation to the second TCP acceleration device.
After the TCP packet is encapsulated into a GTP packet by the core network and the GTP packet is sent to the second TCP acceleration device, step 902 is performed.
Step 902: and processing the GTP data packet by the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the first TCP acceleration equipment.
At the gateway station side, the GTP data packet may be processed by the second TCP acceleration device based on the packet header removal technique and the packet inclusion and splitting technique to generate an optimized data packet, and the optimized data packet is sent to the first TCP acceleration device.
The packet header removing technology comprises the following steps: each node identifies a GTP-U tunnel with a TEID, an IP address, and a UDP port number. The destination port number of the GTP-U message UDP is 2152, 36 bytes of the IPv4 packet header, the UDP header and the GTP header on the outermost layer can be optimized through the TCP acceleration equipment, and only 12 bytes are needed for normal transmission.
Package merging and splitting technology: after receiving a data packet sent by a core network, the gateway station acceleration equipment firstly combines a plurality of small packets, then uses the combined small packets as a big packet to carry out acceleration processing, and splits the big packet according to the maximum MTU (1500 bytes for Ethernet) after the processing, and sends the big packet to an air interface.
After the optimized data packet is sent to the first TCP acceleration device by the second TCP acceleration device, step 903 is performed.
Step 903: and restoring the optimized data packet through the first TCP accelerating device to obtain a GTP data packet, and sending the GTP data packet to a base station.
And at the small station side, the optimized data packet can be processed through the first TCP acceleration equipment to obtain a GTP data packet, and the GTP data packet is sent to the base station.
Step 904: and restoring the GTP data packet through the base station to generate an original TCP data packet, and sending the original TCP data packet to a terminal.
After the base station receives the GTP data packet, the base station may perform a reduction process on the GTP data packet to generate an original TCP data packet, and send the original TCP data packet to the terminal.
EXAMPLE III
Referring to fig. 10, a schematic structural diagram of a system for increasing a transmission rate of a 5G service based on a satellite link according to an embodiment of the present invention is shown, and as shown in fig. 10, the system 1000 includes: a base station 1010, a small station 1020, a gateway station 1030, a core network 1040 and an internet 1050, wherein a first TCP acceleration device 1021 is arranged at the small station 1020 side, a second TCP acceleration device 1031 is arranged at the gateway station 1030 side, wherein,
the base station is used for encapsulating the TCP service data initiated by the received terminal, generating a GTP data packet and sending the GTP data packet to the first TCP acceleration equipment;
the small station is used for processing the GTP data packet through the first TCP acceleration equipment based on a packet header removing technology and a packet inclusion and splitting technology to generate an optimized data packet and sending the optimized data packet to the second TCP acceleration equipment;
the gateway station is used for restoring the optimized data packet through the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to obtain a GTP data packet and sending the GTP data packet to a core network;
and the core network is used for restoring the GTP data packet to obtain an original TCP data packet and sending the original TCP data packet to the Internet.
Optionally, the small station is specifically configured to perform merging and splitting processing on the GTP data packet by using the first TCP acceleration device based on a packet merging and splitting technique, so as to generate a split data packet; and optimizing the IPv4 packet header, the UDP header and the GTP header of the split data packet by the first TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
Optionally, the gateway station is specifically configured to perform, by the second TCP acceleration device, reduction processing on the IPv4 packet header, the UDP header, and the GTP header of the optimized packet based on a packet header removing technique and a packet enclosing and splitting technique, so as to generate the GTP data packet.
Example four
Referring to fig. 11, a schematic structural diagram of another system for increasing a transmission rate of 5G services based on a satellite link according to an embodiment of the present invention is shown, and as shown in fig. 11, the system 1100 includes: a base station 1110, a small station 1120, a gateway station 1130, a core network 1140 and the internet 1150, wherein a first TCP acceleration device 1121 is arranged at the side of the small station 1120, a second TCP acceleration device 1131 is arranged at the side of the gateway station 1130,
the core network is used for encapsulating the TCP data packet into a GTP data packet after receiving the TCP data packet sent by the Internet, and sending the GTP data packet to the second TCP acceleration equipment;
the gateway station is configured to process, by the second TCP acceleration device, the GTP data packet based on a packet header removing technique and an inclusion and splitting technique to generate an optimized data packet, and send the optimized data packet to the first TCP acceleration device;
the small station is used for restoring the optimized data packet through the first TCP acceleration equipment to obtain a GTP data packet and sending the GTP data packet to a base station;
and the base station is used for restoring the GTP data packet, generating an original TCP data packet and sending the original TCP data packet to the terminal.
Optionally, the gateway station is specifically configured to perform merging and splitting processing on the GTP data packet by using the second TCP acceleration device based on a packet merging and splitting technique, so as to generate a processed data packet; and optimizing the IPv4 packet header, the UDP header and the GTP header of the processed data packet by the second TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
The detailed description set forth herein may provide those skilled in the art with a more complete understanding of the present application, and is not intended to limit the present application in any way. Thus, it will be appreciated by those skilled in the art that modifications or equivalents may still be made to the present application; all technical solutions and modifications thereof which do not depart from the spirit and technical essence of the present application should be covered by the scope of protection of the present patent application.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are not particularly limited to the specific examples described herein.

Claims (10)

1. A method for improving 5G service transmission rate based on a satellite link is characterized in that a first TCP accelerating device is arranged on a small station side, a second TCP accelerating device is arranged on a gateway station side, and the method comprises the following steps:
packaging the TCP service data initiated by the received terminal through a base station to generate a GTP data packet, and sending the GTP data packet to the first TCP acceleration equipment;
processing the GTP data packet by the first TCP acceleration device based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the second TCP acceleration device;
the optimized data packet is restored through the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to obtain a GTP data packet, and the GTP data packet is sent to a core network;
and restoring the GTP data packet through the core network to obtain an original TCP data packet, and sending the original TCP data packet to the Internet.
2. The method of claim 1, wherein the processing, by the first TCP acceleration device, the GTP data packet based on a decapsulation technique and a wrapping and splitting technique to generate an optimized data packet comprises:
merging and splitting the GTP data packet by the first TCP acceleration equipment based on a packet merging and splitting technology to generate a split data packet;
and optimizing the IPv4 packet header, the UDP header and the GTP header of the split data packet by the first TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
3. The method according to claim 1, wherein the performing, by the second TCP acceleration device, a restoration process on the split packet based on a packet header removal technique and a packet inclusion and splitting technique to obtain a GTP packet comprises:
and restoring the IPv4 packet header, the UDP header and the GTP header of the optimized data packet by the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to generate the GTP data packet.
4. A method for improving 5G service transmission rate based on satellite link is characterized in that a first TCP accelerating device is arranged at a small station side, and a second TCP accelerating device is arranged at a gateway station side, and comprises the following steps:
after a core network receives a TCP data packet sent by the Internet, the core network encapsulates the TCP data packet into a GTP data packet and sends the GTP data packet to the second TCP acceleration equipment;
processing the GTP data packet by the second TCP acceleration device based on a packet header removing technology and an inclusion and splitting technology to generate an optimized data packet, and sending the optimized data packet to the first TCP acceleration device;
restoring the optimized data packet through the first TCP acceleration equipment to obtain a GTP data packet, and sending the GTP data packet to a base station;
and restoring the GTP data packet through the base station to generate an original TCP data packet, and sending the original TCP data packet to a terminal.
5. The method of claim 4, wherein the processing, by the second TCP acceleration device, the GTP data packet based on a decapsulation technique and a wrapping and splitting technique to generate an optimized data packet comprises:
merging and splitting the GTP data packet by the second TCP acceleration equipment based on a packet merging and splitting technology to generate a processed data packet;
and optimizing the IPv4 packet header, the UDP header and the GTP header of the processed data packet by the second TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
6. A system for increasing transmission rate of 5G services based on a satellite link, the system comprising: the system comprises a base station, a small station, a gateway station, a core network and the Internet, wherein a first TCP accelerating device is arranged at the side of the small station, a second TCP accelerating device is arranged at the side of the gateway station, wherein,
the base station is used for encapsulating the TCP service data initiated by the received terminal, generating a GTP data packet and sending the GTP data packet to the first TCP acceleration equipment;
the small station is used for processing the GTP data packet through the first TCP acceleration equipment based on a packet header removing technology and a packet inclusion and splitting technology to generate an optimized data packet and sending the optimized data packet to the second TCP acceleration equipment;
the gateway station is used for restoring the optimized data packet through the second TCP acceleration equipment based on a packet header removing technology and an inclusion and splitting technology to obtain a GTP data packet and sending the GTP data packet to a core network;
and the core network is used for restoring the GTP data packet to obtain an original TCP data packet and sending the original TCP data packet to the Internet.
7. The system of claim 6,
the small station is specifically configured to merge and split the GTP data packet by the first TCP acceleration device based on a packet merging and splitting technique, so as to generate a split data packet; and optimizing the IPv4 packet header, the UDP header and the GTP header of the split data packet by the first TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
8. The system of claim 6,
the gateway station is specifically configured to perform, by using the second TCP acceleration device, a restoration process on the IPv4 packet header, the UDP header, and the GTP header of the optimized data packet based on a packet header removal technology and an inclusion and splitting technology, so as to generate the GTP data packet.
9. A system for increasing transmission rate of 5G services based on a satellite link, the system comprising: the system comprises a base station, a small station, a gateway station, a core network and the Internet, wherein a first TCP accelerating device is arranged at the side of the small station, a second TCP accelerating device is arranged at the side of the gateway station,
the core network is used for encapsulating the TCP data packet into a GTP data packet after receiving the TCP data packet sent by the internet, and sending the GTP data packet to the second TCP acceleration device;
the gateway station is configured to process, by the second TCP acceleration device, the GTP data packet based on a packet header removing technique and an inclusion and splitting technique to generate an optimized data packet, and send the optimized data packet to the first TCP acceleration device;
the small station is used for restoring the optimized data packet through the first TCP acceleration equipment to obtain a GTP data packet and sending the GTP data packet to a base station;
and the base station is used for restoring the GTP data packet, generating an original TCP data packet and sending the original TCP data packet to the terminal.
10. The system according to claim 9, wherein the gateway station is specifically configured to merge and split the GTP data packets by the second TCP acceleration device based on a packet merging and splitting technique, so as to generate processed data packets; and optimizing the IPv4 packet header, the UDP header and the GTP header of the processed data packet by the second TCP acceleration device based on a packet header removing technology to generate the optimized data packet.
CN202210551204.9A 2022-05-18 2022-05-18 Method and system for improving 5G service transmission rate based on satellite link Pending CN115065982A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116389377A (en) * 2023-03-06 2023-07-04 中国电信股份有限公司卫星通信分公司 Satellite communication method and system and electronic equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116389377A (en) * 2023-03-06 2023-07-04 中国电信股份有限公司卫星通信分公司 Satellite communication method and system and electronic equipment

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