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

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

A method and system for improving the transmission rate of 5G services based on satellite links

technical field

The invention relates to the technical field of network optimization, in particular to a method and system for improving the transmission rate of 5G services based on satellite links.

Background technique

In recent years, mobile communication technology has developed rapidly, and the fifth-generation mobile communication network (5G) has been born, and has now entered the stage of promotion and use. Compared with the previous four generations of mobile networks, 5G networks have the characteristics of fast network speed, low latency and large capacity. The International Telecommunication Union (ITU) also defines enhanced mobile broadband (3D, ultra-high-definition video, etc.), massive machine-type communication, and ultra-reliable low-latency communication (unmanned driving, industrial automation, etc.) as the three main application scenarios of 5G .

Compared with terrestrial mobile communication networks, satellite communication has the advantages of wide coverage, less susceptible to geological disasters, fast construction speed and low construction cost. Therefore, satellites can be used for 5G communication in remote areas, sea, air and other areas that cannot be covered by terrestrial networks. In addition, with the continuous growth of emergency communication services (voice, video and transmission of files, etc.), emergency communication also needs to provide 5G services, which requires satellites to be able to transmit 5G services, realize the integration of satellite communication systems and 5G, and learn from each other's strengths to meet users' needs A variety of business needs are everywhere.

In order to ensure reliable data transmission in the satellite network, the TCP protocol must be used. Due to the inherent characteristics of GEO satellites such as high delay, high bit error rate, and asymmetric uplink and downlink bandwidth, the TCP protocol cannot work efficiently, especially for satellite links with hundreds of Mbps bandwidth. Among them, the effect of long fat pipes (high delay/high bandwidth) is more obvious, resulting in extremely low bandwidth utilization (generally lower than 1% under the 64KB transceiver window).

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a method and system for improving the transmission rate of 5G services based on a satellite link.

The technical solution of the present invention is:

In the first aspect, an embodiment of the present invention provides a method for improving the transmission rate of 5G services based on a satellite link. A first TCP acceleration device is arranged on the side of the small station, and a second TCP acceleration device is arranged on the side of the gateway, including: :

The base station encapsulates the received TCP service data initiated by the terminal, generates a GTP data packet, and sends the GTP data packet to the first TCP acceleration device;

The GTP data packet is processed based on the packet header removal technology and the packet merging and splitting technology by the first TCP acceleration device, an optimized data packet is generated, and the optimized data packet is sent to the second TCP acceleration device;

The optimized data packet is restored by the second TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to obtain a GTP data packet, and the GTP data packet is sent to the core network;

The GTP data packet is restored through the core network to obtain the original TCP data packet, and the original TCP data packet is sent to the Internet.

Optionally, the GTP data packet is processed by the first TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to generate an optimized data packet, including:

By the first TCP acceleration device, based on the packet merging and splitting technology, the GTP data packets are combined and split to generate split data packets;

The optimized data packet is generated by performing optimization processing on the IPv4 header, the UDP header and the GTP header of the split data packet based on the header removal technology by the first TCP acceleration device.

Optionally, performing restoration processing on the split data packets based on the packet header removal technology and the packet merging and splitting technology by the second TCP acceleration device to obtain a GTP data packet, including:

The GTP data packet is generated by restoring the IPv4 header, the UDP header and the GTP header of the optimized data packet based on the packet header removal technology and the packet merging and splitting technology by the second TCP acceleration device.

In a second aspect, an embodiment of the present invention provides a method for improving the transmission rate of 5G services based on a satellite link. A first TCP acceleration device is provided on the small station side, and a second TCP acceleration device is provided on the gateway station side, including :

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 GTP data packet is processed by the second TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to generate an optimized data packet, and the optimized data packet is sent to the first TCP acceleration device ;

The optimized data packet is restored by the first TCP acceleration device to obtain a GTP data packet, and the GTP data packet is sent to the base station;

The GTP data packet is restored by the base station, an original TCP data packet is generated, and the original TCP data packet is sent to the terminal.

Optionally, the GTP data packet is processed by the second TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to generate an optimized data packet, including:

By the second TCP acceleration device, based on the packet merging and splitting technology, the GTP data packets are merged and split, and processed data packets are generated;

The optimized data packet is generated by performing optimization processing on the IPv4 header, the UDP header and the GTP header of the processed data packet based on the header removal technology by the second TCP acceleration device.

In a third aspect, an embodiment of the present invention provides a system for improving the transmission rate of 5G services based on a satellite link. The system includes: a base station, a small cell, a gateway, a core network, and the Internet, and the small cell is provided with There is a first TCP acceleration device, and a second TCP acceleration device is provided on the side of the gateway, wherein,

The base station is configured to encapsulate the received TCP service data initiated by the terminal, generate a GTP data packet, and send the GTP data packet to the first TCP acceleration device;

The small station is configured to process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology through the first TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the the second TCP acceleration device;

The gateway station is used to restore the optimized data packet based on the packet header removal technology and the packet merging and splitting technology through the second TCP acceleration device, obtain a GTP data packet, and send the GTP data packet to Core Network;

The core network is configured to restore the GTP data packet to obtain the original TCP data packet, and send the original TCP data packet to the Internet.

Optionally, the small station is specifically configured to combine and split the GTP data packets based on the packet merging and splitting technology by the first TCP acceleration device to generate split data packets; A TCP acceleration device performs optimization processing on the IPv4 header, the UDP header and the GTP header of the split data packet based on the packet header removal technology to generate the optimized data packet.

Optionally, the gateway station is specifically configured to restore the IPv4 header, the UDP header and the GTP header of the optimized data packet based on the header removal technique and the packet merging and splitting technique by the second TCP acceleration device, The GTP packet is generated.

In a fourth aspect, an embodiment of the present invention provides a system for improving the transmission rate of 5G services based on a satellite link. The system includes: a base station, a small cell, a gateway, a core network, and the Internet, and the small cell is provided with There is a first TCP acceleration device, and a second TCP acceleration device is provided on the side of the gateway,

The core network is configured to encapsulate the TCP data packet into a GTP data packet after receiving the TCP data packet sent by the Internet, and send the GTP data packet to the second TCP acceleration device;

The gateway station is configured to process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology through the second TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the first TCP acceleration device;

The small station is used to restore the optimized data packet through the first TCP acceleration device, obtain a GTP data packet, and send the GTP data packet to the base station;

The base station is configured to perform restoration processing on the GTP data packet, generate an original TCP data packet, and send the original TCP data packet to the terminal.

Optionally, the gateway station is specifically configured to combine and split the GTP data packets based on the packet merging and splitting technology through the second TCP acceleration device to generate processed data packets; and The second TCP acceleration device performs optimization processing on the IPv4 header, the UDP header and the GTP header of the processed data packet based on the packet header removal technology to generate the optimized data packet.

The advantages of the present invention compared with the prior art are:

1. In this embodiment of the present invention, the acceleration device acts as a proxy for the TCP connection between the client and the Internet, and the data transmission and response between the TCP acceleration devices are controlled by the acceleration device. Although RTT is about 600ms, after TCP acceleration, the maximum theoretical rate is about 1.7GBps, which fully meets the requirements of satellite transmission rate;

2. After the TCP acceleration device, the user's IP and port information will not be changed, and it is completely transparent to the user;

3. By removing the packet header mechanism and the packet merging and splitting mechanism, the service transmission time is saved, the transmission rate is increased, and the traffic consumption of the satellite link is reduced.

Description of drawings

1 is a flow chart of steps of a method for improving 5G service transmission rate based on a satellite link provided by an embodiment of the present invention;

2 is a schematic diagram of a service data transmission process provided by an embodiment of the present invention;

3 is a schematic diagram of a satellite link transmitting 5G services according to an embodiment of the present invention;

4 is a schematic diagram of a GTP packet format provided by an embodiment of the present invention;

5 is a schematic diagram of data interaction of a packet header removal technique provided by an embodiment of the present invention;

6 is a schematic diagram of comparing an original data packet and a data packet after removing the packet header according to an embodiment of the present invention;

7 is a schematic diagram of MTU negotiation of a packet merging and splitting technology provided by an embodiment of the present invention;

8 is a schematic diagram of a TCP acceleration device processing a 5G service process according to an embodiment of the present invention;

FIG. 9 is a flowchart of steps of another method for improving the transmission rate of 5G services based on a satellite link provided by an embodiment of the present invention;

10 is a schematic structural diagram of a system for improving the transmission rate of 5G services based on a satellite link provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another system for improving the transmission rate of 5G services based on a satellite link according to an embodiment of the present invention.

Detailed ways

Example 1

Referring to FIG. 1, a flow chart of steps of a method for improving the transmission rate of 5G services based on a satellite link provided by an embodiment of the present invention is shown. A first TCP acceleration device is provided on the side of the small station, and a first TCP acceleration device is provided on the side of the gateway. The second TCP acceleration device, as shown in Figure 1, the method may include the following steps:

Step 101: Encapsulate the received TCP service data initiated by the terminal through the base station, generate a GTP data packet, and send the GTP data packet to the first TCP acceleration device.

The embodiments of the present invention are described for the transmission of uplink service data.

The satellite link transmission 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) service can be shown in Figure 3. In the satellite transmission 5G service, the TCP (Transmission Control Protocol, Transmission Control Protocol) service initiated by the mobile phone first arrives at the base station , is encapsulated into GTP (GPRS Tunning Protocol, a set of IP-based high-level protocols) protocol by the base station, and then after the GTP packet reaches the small station, it takes the satellite link to reach the gateway station, and after exiting the gateway station, it reaches the core network side through a dedicated line , the core network decapsulates the GTP packet, restores it to the normal data packet of the user, and finally reaches the Internet. In the whole process, the GTP packet is transmitted in the satellite communication system, and the TCP acceleration device is deployed at the small station and the gateway station to provide the function of bilateral acceleration.

Among them, the format of the GTP-U protocol can be as shown in Table 1 below:

Table 1: GTP-U protocol format

As shown in Expression 1 above, the satellite communication system is mainly composed of small stations and gateway stations. When transmitting 5G services, the GTP-U protocol is used, which is mainly optimized for the TCP protocol carried by GTP-U.

Figure 4 shows the GTP packet format. The TCP service requested by the user is encapsulated into a GTP packet by the base station. After the GTP packet reaches the TCP acceleration device on the small station side, the TCP acceleration device needs to be parsed layer by layer, parsed to the GTP layer, and then parsed into the inner IP, and judged to be TCP, go to the acceleration process, otherwise, transparent transmission is performed. A variety of mechanisms are designed in the acceleration device to ensure the speed and reliability of transmission, including: 1) Enhanced CUBIC algorithm; 2) Improved BBR algorithm; 3) Improved Rack algorithm; 4) Improved slow-start algorithm; Adapt the ACK adjustment algorithm. The first two algorithms optimize congestion control, the third algorithm optimizes fast retransmission of lost packets, the fourth algorithm optimizes slow start, and the fifth algorithm optimizes asymmetric networks for sending and receiving.

Figure 5 is a data interaction diagram of the removal of packet header technology. When the client and the server perform TCP transmission, they first perform three-way handshakes, then the client sends a request, the server responds, and sends the data to the client. Finally, four waves are performed to complete the removal of the TCP connection. At this point, the TCP connection The interaction is complete. Taking the opportunity of the three-way handshake, after receiving the SYN packet sent by the base station, the small station acceleration forwards it to the gateway station for acceleration, and the gateway station accelerates the return (SYN, ACK) to the small station acceleration, so that the small station acceleration and the gateway station acceleration are saved. The information of the outer IP header, UDP header and GTP header of the base station and core network is stored. When data transmission is performed subsequently, only the source IP, destination IP in the outer IP header and the TEID information in the GTP-U header need to be stored. , which is easy to distinguish between different TCP connections. Because GTP-U supports extended headers, the minimum length is 8 bytes, which shortens the length of at least 36 bytes to 12 bytes, reducing header overhead.

Figure 6 is a comparison of the original data packet and the data packet after removing the packet header. The packet headers of the base station and small station acceleration, gateway station acceleration and core network side transmission remain unchanged, as shown in the left half of Figure 6. The packet header in the three-way handshake phase of small station acceleration and gateway station acceleration remains unchanged, and the packet header format in the data transmission phase is shown in the right half of Figure 6. Store the outer source IP, destination IP and TEID information in front of the payload, so that the small station acceleration will parse the data packets sent by the gateway station acceleration, and parse out the outer source IP, destination IP, TEID and inner layer. Four-tuple, and then find a certain TCP connection information of a tunnel according to the seven-tuple, and finally restore the outer IP header, UDP header and GTP header and send it to the base station.

Fig. 7 is the MTU negotiation diagram of the packet merging and splitting technology. After the gateway station accelerates receiving the data packets from the core network, it first merges several small packets, and after the merger is completed, it is processed as a large packet for accelerated processing. After processing, it is split according to the maximum MTU (1500 bytes for Ethernet). points and send to the air interface. In this way, each packet sent to the air interface is transmitted according to the maximum MTU (1500 bytes). After the small station accelerates receiving the data packet, the packet is firstly grouped, and the data packet sent to the base station is based on the MTU negotiated between the base station and the small station acceleration. split.

Figure 8 is a flow chart of TCP acceleration equipment processing 5G services. After the acceleration device receives the data packet, it first parses it. If it is TCP, it enters the TCP receiving process. Otherwise, it performs transparent transmission, and then judges whether the TCP packet carries data. If it does, it goes through the packet merging process, TCP Accelerate the process, TCP sending process, packet splitting process, remove the packet header process, and finally send it, otherwise, go through the TCP acceleration process and TCP sending process.

In this embodiment, TCP acceleration devices may be set on the small station side and the gateway side respectively, wherein the TCP acceleration device set on the small station side is the first TCP acceleration device, and the TCP acceleration device set on the gateway side That is, the second TCP acceleration device.

For uplink service data, the terminal may initiate TCP service data to the base station.

As shown in FIG. 2 , after receiving the TCP service data initiated by the terminal, the base station can encapsulate the TCP service data to generate a GTP data packet, and the base station sends the GTP data packet to the first TCP acceleration device.

Step 102: Process the GTP data packet based on the header removal technology and the packet merging and splitting technology by the first TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the second TCP Accelerate the device.

On the small station side, the first TCP acceleration device can process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology to generate optimized data, and send the optimized data packet to the second TCP acceleration device.

Header removal technology: Each node identifies a GTP-U tunnel with TEID, IP address and UDP port number. The destination port number of GTP-U message UDP is 2152. Through the TCP acceleration device, the outermost IPv4 header, UDP header and GTP header can be optimized with a total of 36 bytes, and only 12 bytes can be transmitted normally.

Packet merging and splitting technology: After the small station acceleration device receives the data packets from the base station, it first merges several small packets, and after the merger is completed, it is processed as a large packet for accelerated processing. After processing, the maximum MTU (Ethernet is 1500 bytes) is split and sent to the air interface.

Step 103: Perform restoration processing on the optimized data packet based on the packet header removal technology and the packet merging and splitting technology by the second TCP acceleration device to obtain a GTP data packet, and send the GTP data packet to the core network.

On the gateway side, the optimized data packet can be restored by the second TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to obtain a GTP data packet, and the GTP data packet is sent to the core network.

Step 104: Perform restoration processing on the GTP data packet through the core network to obtain an original TCP data packet, and send the original TCP data packet to the Internet.

After the core network receives the GTP data packet, the GTP data packet can be restored to obtain the original TCP data packet, and the original TCP data packet is sent to the Internet.

Embodiment 2

Referring to FIG. 9 , a flowchart of steps of another method for improving the transmission rate of 5G services based on a satellite link provided by an embodiment of the present invention is shown. A first TCP acceleration device is provided on the small station side, and a first TCP acceleration device is provided on the gateway station side. There is a second TCP acceleration device, as shown in Figure 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 embodiments of the present invention are described for the transmission process of downlink TCP service data.

In this embodiment, a TCP acceleration device can be set on the small cell side and the gateway side respectively, wherein the TCP acceleration device set on the small cell side is the first TCP acceleration device, and the TCP acceleration device set on the gateway side is the first TCP acceleration device. The device is the second TCP acceleration device.

For downlink service data, TCP data packets can 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 encapsulated GTP data packet to the second TCP acceleration device.

After the core network encapsulates the TCP data packets into GTP data packets, and sends the GTP data packets to the second TCP acceleration device, step 902 is performed.

Step 902: Process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology by the second TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the first TCP Accelerate the device.

On the gateway side, the second TCP acceleration device can process the GTP data packets based on the packet header removal technology and the packet merging and splitting technology to generate optimized data packets, and send the optimized data packets to the first TCP acceleration device.

Among them, the packet header removal technology: each node identifies a GTP-U tunnel with TEID, IP address and UDP port number. The destination port number of GTP-U message UDP is 2152. Through the TCP acceleration device, the outermost IPv4 header, UDP header and GTP header can be optimized with a total of 36 bytes, and only 12 bytes can be transmitted normally.

Packet merging and splitting technology: After receiving the data packets from the core network, the gateway station acceleration device first merges several small packets, and after merging, it is processed as a large packet for accelerated processing. The network is 1500 bytes) split and sent to the air interface.

After the optimized data packet is sent to the first TCP acceleration device through the second TCP acceleration device, step 903 is performed.

Step 903: Perform restoration processing on the optimized data packet by the first TCP acceleration device to obtain a GTP data packet, and send the GTP data packet to the base station.

On the small station side, the optimized data packet can be processed by the first TCP acceleration device to obtain a GTP data packet, and the GTP data packet is sent to the base station.

Step 904: Perform restoration processing on the GTP data packet by the base station, generate an original TCP data packet, and send the original TCP data packet to the terminal.

After the base station receives the GTP data packet, the base station may perform restoration processing on the GTP data packet to generate an original TCP data packet, and send the original TCP data packet to the terminal.

Embodiment 3

Referring to FIG. 10, a schematic structural diagram of a system for improving the transmission rate of 5G services based on a satellite link provided by an embodiment of the present invention is shown. As shown in FIG. 10, the system 1000 includes: a base station 1010, a small cell 1020, a signal Gateway station 1030, core network 1040 and Internet 1050, a first TCP acceleration device 1021 is set on the side of the small station 1020, and a second TCP acceleration device 1031 is set on the side of the gateway station 1030, wherein,

The base station is configured to encapsulate the received TCP service data initiated by the terminal, generate a GTP data packet, and send the GTP data packet to the first TCP acceleration device;

The small station is configured to process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology through the first TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the the second TCP acceleration device;

The gateway station is used to restore the optimized data packet based on the packet header removal technology and the packet merging and splitting technology through the second TCP acceleration device, obtain a GTP data packet, and send the GTP data packet to Core Network;

The core network is configured to restore the GTP data packet to obtain the original TCP data packet, and send the original TCP data packet to the Internet.

Optionally, the small station is specifically configured to combine and split the GTP data packets based on the packet merging and splitting technology by the first TCP acceleration device to generate split data packets; A TCP acceleration device performs optimization processing on the IPv4 header, the UDP header and the GTP header of the split data packet based on the packet header removal technology to generate the optimized data packet.

Optionally, the gateway station is specifically configured to restore the IPv4 header, the UDP header and the GTP header of the optimized data packet based on the header removal technique and the packet merging and splitting technique by the second TCP acceleration device, The GTP packet is generated.

Embodiment 4

Referring to FIG. 11, a schematic structural diagram of another system for improving the transmission rate of 5G services based on a satellite link provided by an embodiment of the present invention is shown. As shown in FIG. 11, the system 1100 includes: a base station 1110, a small cell 1120, The gateway station 1130, the core network 1140 and the Internet 1150 are provided with a first TCP acceleration device 1121 on the side of the small station 1120, and a second TCP acceleration device 1131 is provided on the side of the gateway station 1130,

The core network is configured to encapsulate the TCP data packet into a GTP data packet after receiving the TCP data packet sent by the Internet, and send the GTP data packet to the second TCP acceleration device;

The gateway station is configured to process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology through the second TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the first TCP acceleration device;

The small station is used to restore the optimized data packet through the first TCP acceleration device, obtain a GTP data packet, and send the GTP data packet to the base station;

The base station is configured to perform restoration processing on the GTP data packet, generate an original TCP data packet, and send the original TCP data packet to the terminal.

Optionally, the gateway station is specifically configured to combine and split the GTP data packets based on the packet merging and splitting technology through the second TCP acceleration device to generate processed data packets; and The second TCP acceleration device performs optimization processing on the IPv4 header, the UDP header and the GTP header of the processed data packet based on the packet header removal technology to generate the optimized data packet.

The specific embodiments described in the present application may enable those skilled in the art to more fully understand the present application, but do not limit the present application in any way. Therefore, those skilled in the art should understand that the present application should still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and technical essence of the present application should be included in the protection scope of the present patent.

The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (10)

1. a method for improving 5G service transmission rate based on satellite link, it is characterized in that, be provided with the first TCP acceleration equipment at the small station side, be provided with the second TCP acceleration equipment at the gateway station side, comprise: The base station encapsulates the received TCP service data initiated by the terminal, generates a GTP data packet, and sends the GTP data packet to the first TCP acceleration device; The GTP data packet is processed based on the packet header removal technology and the packet merging and splitting technology by the first TCP acceleration device, an optimized data packet is generated, and the optimized data packet is sent to the second TCP acceleration device; The optimized data packet is restored by the second TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to obtain a GTP data packet, and the GTP data packet is sent to the core network; The GTP data packet is restored through the core network to obtain the original TCP data packet, and the original TCP data packet is sent to the Internet. 2. method according to claim 1, is characterized in that, described by described first TCP acceleration device based on removing packet header technology and packet merging and splitting technology, described GTP data packet is processed, and optimized data packet is generated, include: By the first TCP acceleration device, based on the packet merging and splitting technology, the GTP data packets are combined and split to generate split data packets; The optimized data packet is generated by performing optimization processing on the IPv4 header, the UDP header and the GTP header of the split data packet based on the header removal technology by the first TCP acceleration device. 3. method according to claim 1, is characterized in that, described splitting data packet is carried out reduction processing based on removing packet header technology and packet merging splitting technology by described second TCP acceleration device, obtains GTP data packet ,include: The GTP data packet is generated by restoring the IPv4 header, the UDP header and the GTP header of the optimized data packet based on the packet header removal technology and the packet merging and splitting technology by the second TCP acceleration device. 4. a method for improving 5G service transmission rate based on satellite link, it is characterized in that, be provided with the first TCP acceleration equipment at the small station side, be provided with the second TCP acceleration equipment at the gateway station side, comprise: 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 GTP data packet is processed by the second TCP acceleration device based on the packet header removal technology and the packet merging and splitting technology to generate an optimized data packet, and the optimized data packet is sent to the first TCP acceleration device ; The optimized data packet is restored by the first TCP acceleration device to obtain a GTP data packet, and the GTP data packet is sent to the base station; The GTP data packet is restored by the base station, an original TCP data packet is generated, and the original TCP data packet is sent to the terminal. 5. method according to claim 4, is characterized in that, described GTP data packet is processed based on described second TCP acceleration device based on removing packet header technology and packet merging and splitting technology, generates optimized data packet, include: By the second TCP acceleration device, based on the packet merging and splitting technology, the GTP data packets are merged and split, and processed data packets are generated; The optimized data packet is generated by performing optimization processing on the IPv4 header, the UDP header and the GTP header of the processed data packet based on the header removal technology by the second TCP acceleration device. 6. A system for improving the transmission rate of 5G services based on satellite links, wherein the system comprises: a base station, a small cell, a gateway station, a core network and the Internet, and a first TCP is provided on the small cell side Acceleration device, a second TCP acceleration device is provided on the gateway station side, wherein, The base station is configured to encapsulate the received TCP service data initiated by the terminal, generate a GTP data packet, and send the GTP data packet to the first TCP acceleration device; The small station is configured to process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology through the first TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the the second TCP acceleration device; The gateway station is used to restore the optimized data packet based on the packet header removal technology and the packet merging and splitting technology through the second TCP acceleration device, obtain a GTP data packet, and send the GTP data packet to Core Network; The core network is configured to restore the GTP data packet to obtain the original TCP data packet, and send the original TCP data packet to the Internet. 7. The system of claim 6, wherein: The small station is specifically used for combining and splitting the GTP data packets based on the packet merging and splitting technology through the first TCP acceleration device to generate split data packets; and through the first TCP acceleration device Based on the packet header removal technology, optimization processing is performed on the IPv4 header, the UDP header and the GTP header of the split data packet to generate the optimized data packet. 8. The system of claim 6, wherein: The gateway station is specifically configured to restore the IPv4 header, the UDP header and the GTP header of the optimized data packet based on the header removal technique and the packet merging and splitting technique by the second TCP acceleration device to generate the GTP data pack. 9. A system for improving the transmission rate of 5G services based on satellite links, wherein the system comprises: a base station, a small cell, a gateway, a core network and the Internet, and a first TCP is provided on the small cell side acceleration device, a second TCP acceleration device is provided on the gateway station side, The core network is configured to encapsulate the TCP data packet into a GTP data packet after receiving the TCP data packet sent by the Internet, and send the GTP data packet to the second TCP acceleration device; The gateway station is configured to process the GTP data packet based on the packet header removal technology and the packet merging and splitting technology through the second TCP acceleration device, generate an optimized data packet, and send the optimized data packet to the first TCP acceleration device; The small station is used to restore the optimized data packet through the first TCP acceleration device, obtain a GTP data packet, and send the GTP data packet to the base station; The base station is configured to perform restoration processing on the GTP data packet, generate an original TCP data packet, and send the original TCP data packet to the terminal. 10. The system according to claim 9, wherein the gateway station is specifically configured to combine and split the GTP data packets based on the packet combining and splitting technology by the second TCP acceleration device Process, generate the processed data packet; And based on the removal of the packet header technology by the second TCP acceleration device, the IPv4 header, the UDP header and the GTP header of the processed data packet are optimized to generate the optimized data packet .

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