Method and system for realizing seamless switching of program source by video users based on openflow switch
A seamless switching and program source technology, applied in the field of network communication, can solve problems such as time difference and video freeze, achieve the effect of solving packet loss and short-term black screen, and seamlessly switching video sources
Active Publication Date: 2020-08-21
SUZHOU CENTEC COMM CO LTD
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Problems solved by technology
In the SDN technology, OpenFlow flow table or group table and other technologies are used to switch the user program source. When the user leaves the action group set where the old video source is located and joins the action group set where the new video source is located, two streams need to be operated. table or two group tables, during the operation, there must be a time difference between the two flow table or group table operations, so there will also be video freezes due to stream interruption
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[0034] In view of the deficiencies in the prior art, the inventor of this case was able to propose the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.
[0035] The present invention proposes a method for realizing seamless switching of program sources by video users based on an OpenFlow switch, using the unified standard group table and flow table defined by OpenFlowSpec to realize seamless switching of video program sources by video users through the OpenFlow switch.
[0036] OpenFlow's Group Table is a template for a collection of behaviors in OpenFlow semantics. It consists of multiple GroupEntries. The structure of each Group Entry is as follows:
[0037] Group Identifier Group Type Counters Action Buckets
[0038] in:
[0039] 1) Group Identifier: a 32-bit unsigned integer, the unique identifier of Group En...
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The present invention discloses a method and a system for implementation of seamless switching of source components by a user based on an OpenFlow switch. The method comprises the steps that: an OpenFlow switch creates more than one Fast-Failover-type motion set which is at least used to receive different source components; two All-type motion sets are nested in each Fast-Failover-type motion setas host and backup member user sets, each host and backup member user set comprises one member user configured to receive the corresponding source component; and when the source components are switched, member users of the host and backup member user sets are edited and host and backup switching are performed to achieve the purpose of switching of the source components. The method and the system can effectively solve the problem that a traditional multicasting mode video user switching source component generates packet loss and transient blank screen, and the purpose of seamless switching of the video sources is achieved to maximum extent.
Description
technical field [0001] The present invention relates to a method and system for video users to switch program sources, in particular to a method and system for video users to seamlessly switch program sources based on an OpenFlow switch, and belongs to the technical field of network communication. Background technique [0002] Traditional switches mainly switch user program sources through multicast groups. The main realization principle is that each multicast group corresponds to a different program source, and a user leaves a multicast group first, and then joins a new multicast group. group, so as to realize program source switching, such as figure 1 As shown in , program 1 to program 3 represent program sources, users 1 to 5 in the user group receive program 1 through the switch, and users 6 to 8 in user group 2 receive program 3 through the switch. When user 2 switches from program 1 to program 3, user 2 first leaves the multicast group where user group 1 belongs, and ...
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IPC IPC(8): H04N21/438H04L12/931
CPCH04L49/201H04N21/4383
Inventor 金利刘敬一杨锐
Owner SUZHOU CENTEC COMM CO LTD