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Mixed addressing method for heaven and earth networks based on geographical position information

A hybrid technology of geographic location information and network, applied in the field of hybrid addressing of sky-earth networks, can solve problems such as inability to complete routing, unsuitable for processing mobile nodes, etc., and achieve the effect of improving routing efficiency and improving robustness

Inactive Publication Date: 2011-07-06
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although mobile IP technology can realize the movement of nodes across network segments, it needs to introduce a large amount of management and maintenance resources to forcefully allocate IP addresses that have not been considered mobile to mobile facilities, which is not suitable for handling a large number of mobile nodes.
At the same time, the IP address is completely a logical address division method. The delivery of data packets depends entirely on the routing direction of each network segment recorded in the routing table. The routing node needs to save the routing table containing a large number of forwarding rules. Once the table is corrupted, routing cannot be done

Method used

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  • Mixed addressing method for heaven and earth networks based on geographical position information
  • Mixed addressing method for heaven and earth networks based on geographical position information
  • Mixed addressing method for heaven and earth networks based on geographical position information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Each node in the network has two addresses: absolute address (SD) and relative address (RD). The absolute address is the permanent identification of the node, which will not change with the passage of time and the change of the node location. When communicating between any nodes, at least the absolute address of the other party must be known to communicate. The relative address is the current identification of the node, which will change with the position of the node and the change of the covering satellite.

[0041] For example, for a mobile node i located in Hefei City (31.51° north latitude, 117.17° east longitude), the address in the IP network is 202.38.64.29, and the absolute address (SD i ) and relative addresses (RD i ), assuming that the node is within the coverage of No. 1 satellite at this time. figure 1 It is a schematic diagram of the absolute address of the node, and the generation of each field in the absolute address is as follows:

[0042] Address t...

Embodiment 2

[0050] The equatorial coordinate system with the center of the earth as the center and synchronous rotation with the earth is adopted, and fixed nodes such as ground stations are fixed in this coordinate system. For such nodes, the relative address remains unchanged. At this time, the relative address is not very useful. It is just to be unified with the mobile node. The addressing can be routed directly through the geographic location information in the absolute address; for satellite nodes, extract The satellite ID contained in the unique identification field in the absolute address can carry out normal communication. Therefore, for these two nodes, the node address has been determined not to change, and no further management and update of the address is required. For a mobile node, it needs a relative address for communication, and the relative address will change as the node moves. In this case, it is necessary to provide an update and management mechanism of the mobile no...

Embodiment 3

[0067] When a node moves from one area to another, its geographic location changes, and its relative address also needs to be changed accordingly. For example, the mobile node i whose initial location is in Hefei City is currently moved to Beijing (39.92° north latitude, 116.46° east longitude). At this time, certain processing needs to be performed to ensure that the relative address of the node is updated in time. Let the initial registration satellite of mobile node i be S, and the initial registration base station be M.

[0068] image 3 The relative address update process for mobile node i is given, and the specific steps are as follows:

[0069] a) Mobile node i updates the geographic location domain in the relative address to [128 116], indicating that the address is 39° north latitude and 116° east longitude, and obtains a new relative address RD with the new geographic location area as the geographic location field content i , that is, the relative address is update...

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Abstract

The invention discloses a mixed addressing method for heaven and earth networks based on geographical position information, which is characterized by adding the geographical position information of nodes in an address, so that the address of each node can reflect the geographical position of the node. Therefore, a forwarding path is selected according to the position relationship between a routing node and a destination node during routing, a routing table about the network address information corresponding to forwarding paths does not need to be maintained, and the routing efficiency is increased. Meanwhile, the concepts of an absolute address and a relative address are introduced for a mobile node, a satellite identity domain is added in the address, and the mapping relationship betweenthe absolute address and the relative address of the mobile node can be searched in a satellite node address data base. By using the mixed addressing method, various nodes can be accessed to the satellite network, high-efficiency routing can be realized by using the destination address of a data packet, and the mixed addressing method plays a key role in the heaven and earth integrated network.

Description

technical field [0001] The invention belongs to the technical field of data communication, and in particular relates to a method for realizing hybrid addressing of the space-ground network based on geographic location information in a space-ground integrated comprehensive information communication network. Background technique [0002] In the widely used Internet at present, terminals communicate based on the IP protocol, and both communicating parties use IP addresses for identification. RFC 950 stipulates that the IP address addressing method is as follows: [0003] IP address = network number + subnet number + host number [0004] The network number is used to identify the network where the host is located, the subnet number is used to further divide a network into several subnets, and the host number is used to identify the host in the subnet. [0005] This addressing method uses regions to divide the network segment, that is, the IP address contains the network number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/56H04B7/185H04W8/26H04L45/74
Inventor 刘斌俞能海张浩王文柏孙长翔龙可杨福荣
Owner UNIV OF SCI & TECH OF CHINA
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