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Processing voice data in packet communication network with encryption

A virtual private network and voice technology, which is applied in the direction of data exchange, telephone communication, and network interconnection through path configuration, and can solve problems such as waste, communication quality degradation, and waste of bandwidth.

Inactive Publication Date: 2006-04-19
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Specifically, IPv6 has a 40-byte IP header, which is larger than IPv4's 20-byte header, so IPv6 wastes relatively more bandwidth than IPv4 when using a VPN
This is because as the IP header size increases, bandwidth is wasted both in the original header and in the new header in tunnel mode, thus creating more waste in IPv6
[0014] As mentioned above, applying VoIP to VPN increases the bandwidth required for encoding, resulting in deterioration of communication quality and delay in transmission time

Method used

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  • Processing voice data in packet communication network with encryption
  • Processing voice data in packet communication network with encryption
  • Processing voice data in packet communication network with encryption

Examples

Experimental program
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Embodiment Construction

[0034] Figure 1A , 1B , 2A and 2B represent the increasing bandwidth requirements of speech codecs in virtual private networks.

[0035] Figure 1A is a comparison table showing the bandwidth when using the G.729A scheme to encode RTP voice packets in a network with a VPN and a network without a VPN. exist Figure 1A In the table of , the bandwidth usage with VAD enabled is 60% of the bandwidth usage with VAD disabled. Figure 1B is a reference Figure 1A , depending on the bandwidth used by the VPN than the view.

[0036] Figure 2A It is a comparison table, which shows the bandwidth of RTP voice packets when using the G.729A scheme in a network with a VPN and using IPv6 or IPv4 in a network without a VPN. Figure 2B is a reference Figure 2A , depending on the bandwidth used by the VPN than the view.

[0037] refer to Figure 1A , 1B , 2A and 2B, it can be seen that the network with VPN requires a larger bandwidth than the network without VPN.

[0038] Specifically, ...

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Abstract

In order to effectively use the bandwidth of a virtual private network (VPN), using encryption to process voice data in a packet communication network includes: the terminal at the sending side confirms the destination address of the call connection packet; Store the call connection information in and register the call connection information in the address translation table; the terminal on the sending side encrypts the call connection packet, and sends the encrypted call connection packet to the receiving side; the terminal on the receiving side receiving the call connection packet The terminal stores the call connection information into its call connection packet; in response to the call connection packet, the terminal on the receiving side encrypts the call connection response packet and sends the encrypted response packet to the terminal on the sending side, so that the terminal on the sending side A communication path is established between the terminal and the terminal on the receiving side; and the terminal on the sending side and the terminal on the receiving side transmit unencrypted voice media data via the communication path using the call connection information.

Description

technical field [0001] The present invention relates to processing voice data in a packet communication network using encryption for efficient use of bandwidth, and more particularly to processing voice data in a Virtual Private Network (VPN) using Internet Protocol. Background technique [0002] A technology for transmitting voice information using Internet Protocol (IP) in a packet-switched network that is being used as a data network is called Voice over IP (VoIP). Unlike traditional line-protocol-based public switched telephone networks (PSTNs), VoIP sends digitized voice messages in discrete packets. [0003] The need to effectively share limited resources in an IP network is the basic principle of VoIP. Ineffective sharing will result in data loss and delays in data transmission. VoIP uses the Real-time Transport Protocol (RTP) to support the timely arrival of packets. It is also necessary to consider the characteristics of the IP network when implementing RTP in Vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L9/00H04L12/66G09C1/00H04L12/46H04L45/586H04M11/06
CPCH04L12/4641H04L63/0428H04L12/66
Inventor 李大
Owner SAMSUNG ELECTRONICS CO LTD