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WAN Accelerator


Wireless networks (WiMax, WiFi, submarine and satellite networks) have recently laid the foundation for providing two-way broadband multimedia communication services with the development of high-speed modems in the physical layer and high-efficiency packet processing technologies at the link layer. However, the unique characteristics of wireless (satellite) links, which still have a higher packet loss rate compared to long transmission latency and wireline networks, make it still difficult for TCP, the transport layer protocol most commonly used for communication, to deliver good performance over the wireless (satellite) networks. To address TCP's problems with wireless (satellite) networks, this accelerator uses Intelligent Performance Enhancing Proxy (i-PEP) technology to deliver the best performance at the application layer, transmission layer, and network layer, eliminating delays at low-speed intervals and maximizing performance quickly through real-time data compression and service learning.


Transfers full speed very quickly without TCP 3 Handshake

Remove ACK and NACK signals to eliminate delay for long connection delays, providing fast data transfer effects.



As shown above, if the RTT (response time) increases from 0.1 seconds to 0.5 seconds, the Throughput decreases by 75%. In addition, if the BER is lowered from 10-5 to 10-2, the Throughput will be reduced by 70%.

When using SCPS-TP aerospace standard acceleration, it removes ACK and NACK signals to help provide maximum performance in low or slow BER environments as shown below.




TCP transfers in slow-response intervals result in slow-response increases in transmission due to delays. This slow reaction speed leads to poor quality.

To address these shortcomings, Fast Star technology is a technology with SCPS-TP and provides TCP speed at full speed from the start.



As shown above, this technology provides maximum speed at first start and then the ability to maintain maximum speed even in low BER environments.


TCP compression transfer technology is the X1 acceleration technology that this WAN accelerator has. The self-developed compression algorithm provides real-time pieload (data segment) compression of transmission data through compression of transmission data in the transport layer segment within a few milliseconds.




In order to connect to the web server, you will receive a response from the DNS server before receiving data from that web server in the browser. Customer is slow to respond when in an overseas or wireless (satellite) environment, resulting in slow response from web browsers.

This WAN accelerator provides DNS information directly from the customer's terminal, enabling the web browser to operate within 1 to 2 ms.




In TCP and UDP transport environments, the customer's data will use the same Patton data a lot. This accelerator can reduce transmission volume by more than 80% by removing redundant data for the same Patton in slow response times, such as satellite networks, or in P2P communication between overseas headquarters and branch offices.




Currently, the UDP share of TCP/IP data is growing. The trend is to use many types of UDP data such as VoIP, Video Conference, CCTV transmission, RTP, etc.

UDP's characteristic is that headers are larger than data, and the occurrence of many packets increases the throughput of modems and security equipment (VPNs) and slows the network overall.

This WAN accelerator uses the ROHC algorithm to compress a 40-byte header size to 4-5 bytes. It also orders compressed packets in real time and resorts them to the size of the entire MTU packet, reducing packet occurrence by 90 percent at the same time as 50% compression.



This service effect is based on the VSAT communication effects of the satellite network and may vary depending on your environment. If you have any questions about network effectiveness analysis or design, please contact us at any time.