A service access method and system suitable for satellite optical switching network

A technology for optical switching network and service access, applied in the direction of data switching network, transmission system, digital transmission system, etc., can solve problems such as inappropriateness, and achieve the effect of improving business transmission and service quality assurance capabilities

Active Publication Date: 2021-04-13
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

Since the OPS technology has not yet been applied on a large scale, and the optical buffer devices for on-board use are not yet mature, it is not suitable to adopt the OPS switching system in the space optical communication network.

Method used

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  • A service access method and system suitable for satellite optical switching network
  • A service access method and system suitable for satellite optical switching network
  • A service access method and system suitable for satellite optical switching network

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Embodiment

[0061] Assume that the number of transmission hops from the source end to the destination end of the service that needs to be connected to the satellite optical switching network is N=5, and the processing delay of the BCP is T p = 10ms, transmission delay T r =200ms, the service duration is 10s, and the ratio of service bandwidth to optical link transmission bandwidth is 0.1. Calculate the optical link utilization rate and end-to-end transmission delay accessed by OBS: On each optical burst switching node, the service arrival rate of the output wavelength i of the optical burst switching unit j is Calculate the optical burst collision-free probability at the output wavelength as Optical link utilization is The probability of successful transmission from source to destination is Service end-to-end transmission delay T s = 2409.2ms. Calculate the optical link utilization rate and end-to-end transmission delay accessed by OFS: the transmission delay is T′ S =3720ms, ...

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Abstract

A service access method and system suitable for satellite optical switching networks, wherein the method is implemented in the following manner: evaluating the communication rate, multiplexing degree and end-to-end delay requirements of services that need to be connected to the space optical switching network According to the evaluation results and the characteristics of the satellite optical switching network, choose OBS or OFS optical switching system for access. The present invention can improve the utilization rate of optical link resources and the degree of service multiplexing as much as possible under the premise of ensuring the communication rate and end-to-end delay requirements of the services to be accessed.

Description

technical field [0001] The invention relates to a service access method suitable for a satellite optical switching network, belonging to the technical field of communication. Background technique [0002] The current mainstream optical switching systems mainly include OCS (Optical Line Switching), OFS (Optical Flow Switching), OBS (Optical Burst Switching) and OPS (Optical Packet Switching): [0003] (1), OCS takes one wavelength channel as the minimum switching unit. In OCS, each connection request will be communicated through the end-to-end optical channel. The establishment of the optical channel adopts the two-way channel reservation method. The source node sends the data packet of the connection establishment request, and only the source node receives the confirmation from the destination node. The data is sent after the information is sent. The granularity of optical switching is one wavelength, which is suitable for high-speed, high-bandwidth service transmission, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/64
CPCH04L12/6418H04L2012/6421H04L2012/6424
Inventor 孙汉汶赵哲马伟
Owner XIAN INSTITUE OF SPACE RADIO TECH
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