Method and device for queuing delay control of synchronization message in sdn network
A technology of synchronous message and queuing delay, which is applied in the field of communication, can solve the problems of delay jitter, asymmetry of round-trip ranging delay of synchronous message, etc., and achieve the effect of preventing delay jitter
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Embodiment 1
[0035] This embodiment provides a method for controlling the queuing delay of synchronous messages in an SDN network, such as figure 1 shown, including:
[0036] S11: Establish a time synchronization queue according to a preset identification; specifically, build an independent virtual time synchronization queue (i.e. a time synchronization queue) with "destination as a distinction (i.e. a preset identification)" at the input port of the switch to distinguish it from the switch For other types of traffic queues, destination differentiation prevents blocking between different isochronous message flows in the same switch. Such as figure 2 As shown, the bursty traffic flow, random traffic flow, periodic traffic flow, and time-synchronized ranging flow pass through the classifier and then enter the queue controller. When the queue controller generates the queue, the virtual time synchronization queue i∈[ 1, N] as the benchmark, the high-priority queue whose priority is higher t...
Embodiment 2
[0052] This embodiment provides a synchronization packet queuing delay control device in an SDN network, such as Figure 4 As shown, it includes: building module 41, acquisition module 42, judgment module 43, first calculation module 44, second calculation module 45 and insertion module 46, each module function is as follows:
[0053] The establishment module 41 is configured to establish a time synchronization queue according to a preset identifier. For details, refer to the relevant detailed description of step S11 in Embodiment 1.
[0054] The obtaining module 42 is configured to obtain the waiting time of the header synchronization message of the time synchronization queue, for details, refer to the relevant detailed description of step S12 in Embodiment 1.
[0055] The judging module 43 is configured to judge whether the waiting time is less than a preset fixed delay, for details, refer to the relevant detailed description of step S13 in Embodiment 1.
[0056] The first ...
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