Relay node selection method and device

A relay node and node technology, applied in the field of communication, can solve the problems of long relay selection time and complicated signaling interaction, and achieve the effect of shortening the selection time and reducing the complexity

Inactive Publication Date: 2013-04-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The main purpose of the present invention is to provide a relay node selection method and device to at least solve the above problems of complex signaling interaction and long relay selection time

Method used

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  • Relay node selection method and device
  • Relay node selection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The network architecture involved in this embodiment is as follows image 3 shown. Wherein the source node 301 needs to perform data communication with the destination node 302 . Due to the need for NAT traversal or unsatisfactory network service quality, the data communication needs to be performed through one or more relay nodes (relay node A303 and relay node B304). At this time, the relay node selection can be performed through the relay management entity 305, and the most suitable relay node for this communication is selected. The specific selection process can be carried out in conjunction with the access network status of the source node 301 and the destination node 302 , the current network status of the core network and the relay node status saved by the relay management entity 305 . The current network status and relay node status of the core network can be acquired by the relay management entity 305 . The access network statuses of the source node 301 and ...

Embodiment 2

[0084] Figure 4 An embodiment of the relay node selection process in the embodiment of the present invention is described. The relay management entity downloads the network topology information through the network topology information server, and completes the relay path selection process by itself. The specific process is as in step S402 to step S410.

[0085] Step S402, before the process starts, the relay management entity acquires network topology information through the network topology information server, which includes information such as correspondence between IP addresses and network groups, network congestion, and network connection costs. These network topology information can be used for relay node selection.

[0086] Optionally, the relay management entity may collect status information of relay nodes before the process starts. The status information of the relay node includes the address of the relay node, information about the access network of the relay nod...

Embodiment 3

[0093] Figure 5 Another embodiment of the relay node selection process in the embodiment of the present invention is described. The selection of the relay node is realized through the network topology information server. The specific process is as follows from step S502 to step S512:

[0094] Step S502, the relay service requester determines that this communication requires relay service, and the relay service requester sends a relay service request to the relay management entity, and the message contains multiple information of the source node or destination node of this communication. Access information. The access mode information includes one or more of IP address, access network type, address type and location information.

[0095] Step S504, the relay management entity preliminarily selects a suitable available relay node according to the relay node information stored by it, and forms a list of candidate relay nodes. The relay management entity sends the candidate r...

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Abstract

The invention discloses a relay node selection method and a relay node selection device. The method comprises the following steps of: obtaining information of various access ways of a source node and / or a target node; and selecting at least one relay node according to the various access ways, wherein the selected relay node is used for transmitting data from the source node to the target node. By adopting the relay node selection method and the relay node selection device provided by the invention, problems of interactive and complex signaling and long relay selection time in relay node selection processes in related technology can be solved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for selecting a relay node. Background technique [0002] With the development of network technology, multimedia services (including VoIP (Voice over Internet Protocol, VoIP) services, video on demand / live broadcast, software download, etc.) are rapidly popularized in packet data networks. Especially in a network based on peer-to-peer network technology, each node not only obtains services from other nodes as a client, but also provides services to other nodes as a server. When the peer node is located behind a NAT (Network Address Translation, network address translation) device or a firewall device, the communication parties cannot directly establish a connection. At this time, it is necessary to use relay technology to realize the NAT / firewall traversal function and help peer nodes establish direct connections. Furthermore, since the packet data network ...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L12/913H04L47/724
CPCH04L12/66
Inventor 王炜胡永生
Owner ZTE CORP
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