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Self-selecting route address coding method for ensuring QOS in all-optical packet network

A technology of address coding and packet switching network, applied in the field of improved self-selection address coding, which can solve the problems of poor network scalability and flexibility, too long packet header, etc.

Inactive Publication Date: 2010-05-19
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The invention provides an improved self-selection address coding method that guarantees QOS in an all-optical packet switching network, and aims to solve the problems of too long packet header and poor network scalability and flexibility in the original method, and can realize network attributes and Dynamic real-time adaptation of business attributes to ensure the QOS transmission requirements of the business

Method used

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  • Self-selecting route address coding method for ensuring QOS in all-optical packet network
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  • Self-selecting route address coding method for ensuring QOS in all-optical packet network

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Embodiment 1

[0024] This embodiment is based on the figure 1 The network topology diagram shown is illustrated. It mainly explains the process of adding address coding information and priority information to edge nodes for data services, and the process of locking the outbound port of data packets by performing related operations on each node.

[0025] Assume that the incoming business is a high-priority business, and it wants to reach node 6 from node 1. The control module generates address coding information whose destination address is node 6 according to the destination address information in the service data packet and the whole network information. Add 3 bits in front of the address coding information as service priority information.

[0026] The node information table in each node reflects the network performance dynamically and in real time, and the table contains two items: priority information and outbound port information that can meet the priority requirements. The node info...

Embodiment 2

[0029] This embodiment is based on the figure 1 The network topology diagram shown is illustrated. It mainly explains that when data enters the network for transmission, the node information table changes correspondingly after the network topology changes, and the process of dynamically reflecting network attributes in real time.

[0030] When the data packet enters the network for transmission, the network topology changes. If the link from path 2 to path 4 is seriously damaged, the information table of node 2 will be updated, and the priority of the service will not be satisfied when the port 2 exits. Information table update results Figure 6 shown. The second bit changed from the original "1" to "0", indicating that the current network performance data packets can no longer guarantee the high-priority transmission requirements from port 2.

[0031] When the data packet arrives at node 2, the number (1110) in the address field of node 2 in the packet header and the numbe...

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Abstract

The invention discloses an improved self-selecting route address coding method for ensuring QOS in an all-optical packet network. The self-selecting route address coding method for ensuring QOS in the all-optical packet network comprises the steps of: adding coded address and priority information at an edge node according to destination address information of a data packet; and locking the output port of the data packet by performing associated operation at each node. The self-selecting route address coding method of the invention has the advantages that: the method is easy to be realized through a simple single-bit optical logic device, is very practical, overcomes the drawback that the conventional method is only suitable for static network topology, can meet the dynamic variation requirement of the conventional network, and greatly increases expandability and flexibility.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an improved self-selection address coding method for ensuring QOS in an all-optical packet switching network. The method is mainly used in an all-optical packet switching network, and is a self-selecting method that can better ensure service QOS transmission, and especially relates to the technical field of optical communication. Background technique [0002] After more than 30 years of development, optical communication has developed from the initial realization of large-capacity information transmission to the further realization of more optical signal processing functions. Optical communication signal processing is a key technology to meet the needs of future networks. Compared with the signal processing in the electrical domain, the signal processing directly acting on the optical domain has great advantages such as extremely high processing capacity and efficiency, ex...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04Q11/00H04L12/725
Inventor 王宏祥骆淑云宫小卉纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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