Voice gateway for VoIP (Voice over Internet Protocol) system passable wireless sensor network and network
A wireless sensor and voice gateway technology, which is applied in the field of network communication, can solve the problems that VoIP data cannot pass through the wireless sensor network and cannot be converted into VoIP protocols, so as to achieve the effect of broadening the transmission range.
Inactive Publication Date: 2014-09-10
SOUTHEAST UNIV
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Problems solved by technology
[0006] Technical issues: Because many current Internet and wireless sensor network interconnection schemes generally cannot perform protocol conversion on the VoIP protocol and allow VoIP data to pass through the wireless sensor network. For example, many solutions can only realize the communication between the Internet and wireless sensor network nodes. but cannot make VoIP data traverse wireless sensor networks
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[0059] Implementation example: take computer A sending a voice data message to computer B as an example
[0060] The structure of the voice data message sent by computer A to computer B in the isolated island A of the IP network after being encapsulated by the TCP / IP protocol stack of computer A is as follows:
[0061] preamble
[0062] The source IP address is the IP address of computer A, and the destination IP address is the IP address of computer B. The IP network data message is demultiplexed by the TCP / IP protocol stack in the gateway 1, and the address mapping component maps the source IP address A and the sink IP address B into the source node address 1 and the destination node address 2 through the query address mapping table ; The data grouping component groups the IP network link layer load data (including IP header field, TCP header field and RTP data) into groups, and marks each group with group number information. The format of the data message sent to...
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The invention provides a voice gateway for a VoIP (Voice over Internet Protocol) system passable wireless sensor network. VoIP data transmitted from an IP (Internet Protocol) network is subjected to unpacking through a TCP / IP (Transmission Control Protocol / Internet Protocol) stack so as to obtain the address information of the VoIP data; VoIP data transmitted from a wireless sensor network is subjected to unpacking through a wireless sensor network protocol stack so as to obtain source / host IP address information. The invention also provides a VoIP system passable wireless sensor network which uses the gateway, wherein after an RTP (Real Time Protocol) data message in which voice data is packaged is downloaded from an application layer by a sender computer, the RTP data message is subjected to TCP multiplexing packaging and is then delivered to the TCP / IP stack of an operating system to be processed; an packaged IP datagram which is formed by an IP layer is transmitted to a link layer and is then transmitted to a physical layer; the IP datagram is subjected to intermediate routing, passes through the wireless sensor network from a source IP network, reaches a data receiver of a target IP network, and is subjected to demultiplexing by the receiver; and all the IP networks and the wireless sensor network are connected with the gateway equipment.
Description
technical field [0001] The application of the present invention relates to a voice gateway interconnected between an IP network and a wireless sensor network, in particular to a voice gateway supporting a VoIP system between IP networks passing through a wireless sensor network. The invention helps to solve the problem of VoIP voice datagram transmission between IP networks connected by wireless sensor network technology. The invention satisfies the requirements of delivery and addressing in the process of the VoIP voice datagram passing through the wireless sensor network, broadens the transmission range of the voice datagram between IP networks in certain scenarios, and belongs to the technical field of network communication. Background technique [0002] With the continuous improvement of wireless sensor node chip processing capabilities and the maturity of wireless sensor network technology, the theoretical transmission bandwidth of the current mainstream wireless sensor...
Claims
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IPC IPC(8): H04L29/06H04L12/66H04W88/16
Inventor 陶军刘智杰柳津陈文强
Owner SOUTHEAST UNIV