CN102118306A - Method for redirecting multimedia content on demand request and redirection equipment - Google Patents
Method for redirecting multimedia content on demand request and redirection equipment Download PDFInfo
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Abstract
The invention discloses a method for redirecting a multimedia content on demand request in an internet protocol television (IPTV) system. The IPTV system adopts a tree structure with a plurality of nodes, wherein each node is provided with a plurality of access points (APs) and a plurality of streaming media servers; each AP is relevant to multimedia content types; and each multimedia content type corresponds to different content direction strategies. The method comprises the following steps: receiving a multimedia content on demand request from a user at one AP; according to the AP number, determining the multimedia content type related to the multimedia content on demand request; and according to the content direction strategy corresponding to the determined multimedia content type, redirecting the multimedia content on demand request to a proper streaming media server. In addition, the invention also discloses corresponding redirection equipment for redirecting the multimedia content on demand request.
Description
Technical field
The present invention relates to IPTV (IPTV) system, specifically, relate to the technology that in the IPTV system, the multimedia content on demand request from the user is redirected.
Background technology
Current, the IPTV system has obtained commercial widely.IPTV is a kind of multimedia communication technology based on the internet, and it utilizes the infrastructure of broadband network, is display terminal with domestic television set or personal computer, provides television channel program and other content of multimedia to the terminal use.The main feature of IPTV is interactivity and real-time.
Traditional IPTV system uses centralized control agent (for example IPTV control centre) with the request based on the user different strategies to be carried out in different services or content type usually.Usually, the content transmission network of existing IPTV system comprises a centralized control centre and a plurality of Edge Server.Usually, when user's request arrives IPTV control centre, the suitable content of multimedia that the user asks or the Edge Server of service of comprising selected by IPTV control centre, and request is directed to selected Edge Server, then, provide corresponding content of multimedia or service by this Edge Server.
Though this mode is successfully used, but, centralized control for the ultra-large IPTV system that produces a large amount of concurrent requests (for example, the system that can hold millions of users) or the very many IPTV systems of Edge Server will become bottleneck, this be since centralized control agent when selecting suitable Edge Server, need know the load of content topology, Edge Server and the network of entire I PTV system, and, collect and manage these information difficulty more that will become by individual equipment along with the expansion of system scale.
In addition, " flat " structure of existing content transmission network also is not suitable for the large scale system that Edge Server distributes and disperses on the geographical position, because in such system, delay in the core network can cause centralized control centre to be difficult in time know the renewal of Edge Server, thereby may make the decision that makes mistake.Equally, interrupted network problem also can make IPTV system instability in the core network of mean quality and the core network.
For addressing the above problem, some interchangeable technical schemes have been proposed at present.In these technical schemes, whether the server cluster with capacity of self-government can provide service to user's request or to other server cluster transmission request in inside decision, and at the internal control content of multimedia.Yet such technical scheme does not relate to the different strategies of situation implement to(for) different services or content type.In addition, repeatedly be redirected and also may form winding.
Summary of the invention
The present invention proposes in view of above-mentioned technical problem just, its purpose is to provide a kind of method and re-positioning device thereof that is redirected the multimedia content on demand request in the IPTV system, it can support to use different directional strategies for different content of multimedia or COS, and realizes multi-level being redirected and do not cause being redirected of circulation.
According to an aspect of the present invention, a kind of method that is redirected the multimedia content on demand request in the IPTV system is provided, described IPTV system adopts has the tree structure of a plurality of nodes, wherein, each node has a plurality of access points and a plurality of streaming media server, each access point is associated with multimedia content type, and the corresponding different content-targeted strategy of each multimedia content type, and described method comprises: from the multimedia content on demand request of access point reception from the user; According to the access point number, determine the related multimedia content type of described multimedia content on demand request; And, described multimedia content on demand request is redirected to suitable streaming media server according to the content-targeted strategy corresponding with determined multimedia content type.
According to another aspect of the present invention, a kind of re-positioning device that is redirected the multimedia content on demand request in the IPTV system is provided, it is configured on the node of described IPTV system, described re-positioning device comprises: a plurality of access points, be used for the receiving multimedia content order request, wherein each access point is associated with multimedia content type, and the corresponding different content-targeted strategy of each multimedia content type; Content type is determined device, is used for according to the access point number, determines the related multimedia content type of described multimedia content on demand request; And redirection device, be used for described multimedia content on demand request being redirected to suitable streaming media server according to the content-targeted strategy corresponding with determined multimedia content type.
According to a further aspect of the invention, provide the server of a kind of IPTV of being used for system, it comprises above-mentioned re-positioning device.
Description of drawings
Fig. 1 is the flow chart that is redirected the method for multimedia content on demand request in the IPTV system according to an embodiment of the invention;
Fig. 2 is the flow chart of redirection steps among the embodiment shown in Figure 1;
Fig. 3 is the flow chart of determining step among the embodiment shown in Figure 2;
Fig. 4 is the schematic diagram of application drawing 1 to an example of the IPTV system of the method for embodiment shown in Figure 3;
Fig. 5 is the schematic diagram of application drawing 1 to another example of the IPTV system of the method for embodiment shown in Figure 3;
Fig. 6 is the schematic block diagram that is redirected the re-positioning device of multimedia content on demand request in the IPTV system according to an embodiment of the invention.
Embodiment
Believe that by below in conjunction with the detailed description of accompanying drawing to specific embodiments of the invention, above and other objects of the present invention, feature and advantage will be more obvious.
Fig. 1 shows the flow chart that is redirected the method for multimedia content on demand request in the IPTV system according to an embodiment of the invention.Below in conjunction with accompanying drawing, present embodiment is described in detail.
In the present embodiment, the IPTV system adopts tree structure, comprises a plurality of nodes, i.e. a Centroid and a plurality of fringe node.IPTV system for ultra-large also can comprise a plurality of branch nodes, and it is between Centroid and fringe node.In the IPTV system, each node can comprise a plurality of access points and a plurality of streaming media server, wherein streaming media server is used for providing content of multimedia or service to the user, and access point is used to receive the multimedia content on demand request from the user, and each access point is associated with a multimedia content type, and each multimedia content type can corresponding different content-targeted strategies.Preferably, access point is the IP port.
For example, node can have four IP ports, and wherein, IP port A is associated with family movie, and IP port B is associated with trailer, and IP port C is associated with up-to-date program recording, and IP port D is associated with other multimedia content type.So, the content corresponding directional strategy can be as described below:
When 1) being family movie for multimedia content type, content-targeted strategy can be: nearest available server provides the service of family movie from the zone, if nearest server is unavailable, then provides other alternative film;
When 2) being trailer for multimedia content type, content-targeted strategy can be: the service of trailer only is provided from the designated edge server that comprises trailer, if the designated edge server is unavailable, then refuses this request;
When 3) being up-to-date program recording for multimedia content type, content-targeted strategy can be: nearest available server provides the service of up-to-date program recording from the zone, if server nearest in should the zone is unavailable, then nearest available server provides from adjacent areas;
4) for other multimedia content type, content-targeted strategy can be: the available server from the zone provides corresponding content of multimedia.
Though more than provided the example of the content-targeted strategy of some multimedia content type and correspondence thereof, but those of ordinary skill in the art can understand, these examples are not to be determinate, multimedia content type and content-targeted strategy thereof can be as required, defined voluntarily by the service provider of IPTV system.
As shown in Figure 1, at step S101, receive multimedia content on demand request from the user from the access point of for example IP port.By different IP ports, the node of IPTV system can receive different multimedia content on demand requests.Then, at step S105,, determine the multimedia content type that the multimedia content on demand request is related according to the IP port numbers.As previously mentioned, the IP port is associated with multimedia content type, and this incidence relation can pre-determine and be recorded in the incidence relation table, wherein IP port numbers of each clauses and subclauses record and corresponding multimedia content type.
Then, at step S110, the content-targeted strategy according to corresponding with determined multimedia content type is redirected to suitable streaming media server with the multimedia content on demand request.As previously mentioned, different multimedia content type can adopt different content-targeted strategies, and this strategy can be in advance formulated by the service provider of IPTV system, and offers each node.In the present embodiment, request is redirected and can adopts the multi-level redirected method that will be described later to multimedia content on demand, certainly, those of ordinary skill in the art understands easily, also can adopt the existing method that is redirected by centralized control agent.In addition, in the present embodiment, the multimedia-on-demand content requests that is received for each IP port, all use multi-level redirected method, yet, those of ordinary skill in the art also expects easily, and the multimedia-on-demand content requests that can be only or a part of IP port be received is used multi-level redirected method.
By above description as can be seen, the method of the redirected multimedia content on demand request of present embodiment can be supported different multimedia content type is used different content-targeted strategies, by specific multimedia content type is adopted specific content-targeted strategy, because each node only needs a spot of systematic knowledge just can make decision to the request with specific multimedia content type, therefore, can reduce the request responding time, improve user's experience.
Fig. 2 shows the flow chart of redirection steps S110 among the embodiment shown in Figure 1, below in conjunction with accompanying drawing, this step is described in detail.
In the present embodiment, redirection steps S110 adopts multi-level redirected method, that is, each node also disposes rank directional strategy separately.According to the rank directional strategy of each node, can judge whether this node can be used for providing corresponding service to the multimedia content on demand request that is received, but and be judged as this node time spent, request is directed to this node.In addition, can also when this node can not provide corresponding service, request be redirected to other node.
The rank directional strategy is the application-specific rule that is applied to node, can be defined as shown in table 1:
Table 1
| The rank directional strategy | Rule |
| First order strategy | Whether position degree of closeness, this node of checking the node of using this grade strategy and sending between the multimedia content on demand requesting users are whether load capacity movable and this node surpasses threshold value |
| Second level strategy | Check first order strategy and whether have the content of multimedia of being asked at this intranodal |
| Third level strategy | But check the load capacity of the streaming media server of second level strategy and this intranodal |
Those of ordinary skill in the art can understand, and the rank directional strategy can be defined as required by the service provider of IPTV system, and it is not limited to the content of table 1.
As shown in Figure 2, at step S201,, be identified for this multimedia content on demand requested service territory according to the source address of the multimedia content on demand request that is received.
In the present embodiment, service-domain is the specific IP address field that node provides service that is used for, and is used to help determine and the nearest server of transmission multimedia content on demand requesting users.Each service-domain can comprise one or more nodes, has different priority between a plurality of nodes.Each node also can be served one or more service-domains.
Then, at step S205,, judge the streaming server that whether has the node that multimedia content on demand request institute requested service can be provided in this service-domain based on the rank directional strategy of all nodes in the service-domain of in step S201, determining.About this step, will be elaborated with reference to Fig. 3 in the back.
If in step S205, be judged as and have the streaming server that service can be provided in the service-domain, then at step S210, the multimedia content on demand request is redirected to this streaming server,, provides corresponding content of multimedia by this streaming server response multimedia content on demand request.
There is not the streaming server that service can be provided in the service-domain if in step S205, be judged as,, checks whether this service-domain has upper layer node then at step S215.If upper layer node is arranged, then at step S220, the multimedia content on demand request is redirected to this upper layer node, select its included streaming server by upper layer node, the content of multimedia of being asked, perhaps definite streaming server that the node of service can be provided from adjacent service-domain to provide.If there is not upper layer node, then at step S225,, carry out other processing according to the content-targeted strategy of multimedia-on-demand content requests, for example, provide other alternative content of multimedia, refusal request etc.
Fig. 3 shows the flow chart of determining step S205 among Fig. 2.As shown in Figure 3, at step S301, determine the quantity of service-domain interior nodes definite in step S201.
If service-domain only comprises a node, the receiving node that promptly only comprises the receiving multimedia content order request, then at step S303, receiving node directly determines to provide the streaming media server of service in its included streaming media server, at this moment, the judged result of determining step S205 is for existing the streaming server that service can be provided in the service-domain.If receiving node be can not determine the streaming media server that service can be provided in step S303, then the judged result of determining step S205 is not for existing the streaming server that service can be provided in the service-domain.
If service-domain comprises a plurality of nodes,, determine whether receiving node is father node, and promptly whether receiving node has child node in service-domain in service-domain then at step S305.If receiving node is a father node, then at step S308,, carries out the rank directional strategy of this child node, and, judge whether this child node can be used for the service that provides required at step S310 for the child node with limit priority of receiving node in the service-domain.If this child node can be used for providing service, then at step S312, receiving node is redirected to this child node with the multimedia content on demand request.Then, at step S315, this child node determines whether also to exist the sub-services territory that is used for the multimedia content on demand request.
If there is the sub-services territory, then return execution in step S301 to step S315, wherein, as current service-domain, this child node is as current receiving node with this sub-services territory.
If there is no sub-services territory, then at step S318, this child node determines to provide the streaming media server of service in its included streaming media server, at this moment, the judged result of determining step S205 is for existing the streaming server that service can be provided in the service-domain.If this child node be can not determine the streaming media server that service can be provided in step S318, then at step S320, this child node is redirected to receiving node with the multimedia content on demand request, and at this moment, this child node is judged as unavailable.
If in step S310 or in step S320, child node is judged as unavailable, judge then whether this child node is last child node (step S322), if not last child node, then turn back to step S308, according to the order of priority, for next child node execution in step S308 in the service-domain to step S320; If last child node, it is all unavailable then to be judged as all child nodes.
When all child nodes all are judged as when unavailable, at step S325, receiving node determines to provide the streaming media server of service in its included streaming media server, at this moment, the judged result of determining step S205 is for existing the streaming server that service can be provided in the service-domain.If receiving node be can not determine the streaming media server that service can be provided in step S325, when then certain child node is as current receiving node in service-domain, at step S328, the multimedia content on demand request is redirected to the father node (being former receiving node) of this child node.Then, at step S330, this father node determines to provide the streaming media server of service in its included streaming media server, and at this moment, the judged result of determining step S205 is for existing the streaming server that service can be provided in the service-domain.If this father node be can not determine the streaming media server that service can be provided in step S330, then the judged result of determining step S205 is not for existing the streaming media server that service can be provided in the service-domain.In addition, when receiving node be can not determine the streaming media server that service can be provided in step S325, be the situation of actual receiving node for current receiving node, be judged as and do not have the streaming media server that service can be provided in the service-domain.
If in step S305, receiving node is not the father node in the service-domain, then in step S335, receiving node determines to provide the streaming media server of service in its included streaming media server, at this moment, the judged result of determining step S205 is for existing the streaming server that service can be provided in the service-domain.If receiving node be can not determine the streaming media server that service can be provided in step S335, then in step S340, the multimedia content on demand request is redirected to the upper layer node of receiving node, turns back to step S305 then, wherein with this upper layer node as current receiving node.
By foregoing description as can be seen, each node all has the function of overall business load balance and interior business load balance, when whether decision node can be used for providing institute's requested service or when other node is redirected, use overall business load balance, and, use the interior business load balance when when intra-node is determined the streaming media server of service can be provided.
In addition, for fear of forming winding, then each nodes records was through the multimedia content on demand request a period of time of oneself, for example 30 seconds.When each node receives the multimedia content on demand request, at first check the current identical multimedia content on demand request that whether records from same node of this node.Record identical multimedia content on demand request if be checked through, show that then forming circulation is redirected, this node will directly determine to provide the streaming media server of service in its included streaming media server.If there is not identical multimedia content on demand request, then this node is carried out step subsequently.That in this way, can avoid effectively circulating is redirected.
In the present embodiment, receiving node can be Centroid, branch node or the fringe node in the IPTV system.Below by two examples the method for Fig. 1 to embodiment shown in Figure 3 is described.
Fig. 4 is the schematic diagram of application drawing 1 to an example of the IPTV system of the method for embodiment shown in Figure 3, and wherein, the IPTV system has tree height of three, comprises 1 Centroid, 2 branch nodes and 5 fringe nodes.In this example, mainly the left-hand branch network is described.
As shown in Figure 4, branch node 1 and fringe node 1,2 forms three service-domains: 201.0.0.0/16 service-domain (representing with chain-dotted line), 201.1.0.0/16 service-domain (representing with the length chain-dotted line) and default-service territory (dotting).201.0.0.0/16 service-domain is used to serve the request from the 201.0.0.0/16 address field, and comprise 3 nodes, be fringe node 1, fringe node 2 and branch node 1, wherein, the priority of each node is: fringe node 1＞fringe node 2＞branch node 1, and fringe node 1,2 and branch node 1 are all used second level strategy.201.1.0.0/16 service-domain is used to serve the request from the 201.1.0.0/16 address field, and comprise 2 nodes, be fringe node 2 and branch node 1, wherein the priority of each node is: fringe node 2＞branch node 1, and fringe node 2 and branch node 1 are all used second level strategy.The default-service territory is used to serve the request from other address field, and comprises 1 node, and promptly branch node 1, and wherein branch node 1 is used second level strategy.In fact, though not shown, for Centroid and branch node 1,2, also can form similar service-domain, for example, comprise first service-domain of Centroid and branch node 1, second service-domain that comprises Centroid and branch node 1,2 comprises the default-service territory of Centroid.
In this example, receiving node is a Centroid.When the center node received multimedia content on demand request from the user by its IP port, according to this IP port numbers, for example IP port A determined that multimedia content type is a family movie.Then, Centroid is according to being used for the content-targeted strategy of family movie, begins that request is redirected to multimedia content on demand.
At first, Centroid is according to the source IP address of multimedia content on demand request, and being identified for this requested service territory is first service-domain.In first service-domain, comprise 2 nodes, wherein, Centroid is a father node, its child node is a branch node 1.So, Centroid is carried out the rank directional strategy of branch node 1 to judge whether branch node 1 can be used for providing institute's requested service.According to second level strategy, Centroid checks whether branch node 1 and user's position degree of closeness, the health of branch node 1 (that is, branch node 1 whether be movable and whether load capacity branch node 1 surpasses threshold value) and branch node 1 exist the content of multimedia of being asked.When branch node 1 satisfies above-mentioned inspection condition, be that branch node 1 is near user's zone and is healthy (being that branch node 1 is movable and its load capacity surpasses threshold value) and when having the content of multimedia of being asked, Centroid judges that branch node 1 is available, and then Centroid is redirected to branch node 1 with the multimedia content on demand request.
Then, 1 pair of branch node has the fringe node 2 of inferior high priority and carries out its rank directional strategies (second level strategy), because fringe node 2 does not have the content of multimedia of being asked, then branch node 1 judges that fringe node 2 is unavailable.At this moment, branch node 1 finds that all child nodes are all unavailable, then branch node 1 determines that in its included streaming server which streaming server can provide required service, after having determined to provide the streaming server of service, the multimedia content on demand request is redirected to this streaming server.This streaming server response multimedia content on demand request provides corresponding service.
If this moment, branch node 1 can not determine to provide the streaming server of service, then the multimedia content on demand request is redirected to Centroid, determine that by Centroid its included streaming server is to provide service.
Fig. 5 shows application drawing 1 another example to the IPTV system of the method for embodiment shown in Figure 3, and wherein the IPTV system has the structure identical with Fig. 4.In this example, mainly the right-hand branch network is described.
As shown in Figure 5, branch node 2 and fringe node 3,4,5 also form three service-domains: 201.128.0.0/16 service-domain (representing with the length chain-dotted line), 201.129.0.0/16 service-domain (representing with chain-dotted line) and default-service territory (dotting).201.128.0.0/16 service-domain is used to serve the request from the 201.128.0.0/16 address field, and comprise 2 nodes, be fringe node 3 and branch node 2, wherein, the priority of each node is: fringe node 3＞branch node 2, and fringe node 3 is used second level strategy, and branch node 2 is used third level strategy.201.129.0.0/16 service-domain is used to serve the request from the 201.129.0.0/16 address field, and comprise 4 nodes, be fringe node 3,4,5 and branch node 2, wherein the priority of each node is: fringe node 5＞fringe node 4＞fringe node 3＞branch node 2, and fringe node 4,5 and branch node 2 are used third level strategy, and fringe node 3 is used second level strategy.The default-service territory is used to serve the request from other address field, and comprises 1 node, and promptly branch node 2, and wherein branch node 2 is used third level strategy.In fact, though not shown, for Centroid and branch node 1,2, also can form similar service-domain, for example, comprise first service-domain of Centroid and branch node 1, second service-domain that comprises Centroid and branch node 1,2 comprises the default-service territory of Centroid.
In this example, receiving node is a branch node 2.When branch node 2 received multimedia content on demand request from the user by its IP port, according to this IP port numbers, for example IP port D determined that multimedia content type is other.Then, branch node 2 begins this multimedia content on demand request is redirected according to the content-targeted strategy that is used for other multimedia content type.
At first, branch node 2 is according to the source IP address of multimedia content on demand request, and being identified for this requested service territory is the 201.129.0.0/16 service-domain.In this service-domain, comprise 4 nodes, wherein, branch node 2 is father nodes, its child node is a fringe node 3,4 and 5.So, branch node 2 is carried out its rank directional strategy to judge whether fringe node 5 can be used for providing institute's requested service for the highest fringe node 5 of priority.According to third level strategy, branch node 2 check fringe nodes 5 and user's position degree of closeness, the health of fringe node 5 (that is, fringe node 5 whether be movable and whether load capacity fringe node 5 surpasses threshold value) but, whether fringe node 5 exist the content of multimedia of being asked and the load capacity of each streaming media server in the fringe node 5.When fringe node 5 satisfies above-mentioned inspection condition, be that fringe node 5 is near user's zone and is healthy (being that fringe node 5 is movable and its load capacity surpasses threshold value) and have the content of multimedia of being asked and certain streaming media server when having load capacity, branch node 2 judges that fringe node 5 is available, then branch node 2 directly is redirected to the multimedia content on demand request certain streaming media server of fringe node 5, responds multimedia content on demand request so that required service to be provided by this streaming media server.
If it is unavailable that fringe node 5 is judged as, then successively fringe node 4,3 is judged that the example of this process and Fig. 4 is similar, omit corresponding explanation at this.
If receiving node is a fringe node, then with Centroid and branch node similarly, request is redirected to multimedia content on demand to the method for embodiment shown in Figure 3 also can to use Fig. 1.In this case, for example, receiving node is a fringe node 4, after then fringe node 4 receives the multimedia content on demand request, determines that service-domain is the 201.129.0.0/16 service-domain.In this service-domain, fringe node 4 is not a father node, therefore, fringe node 4 directly determines to provide the streaming server of service in its included streaming server, yet fringe node 4 finds that it can not be identified for providing the streaming server of service, then the multimedia content on demand request is redirected to its upper layer node, promptly branch node 2.Branch node 2 carries out being redirected of multimedia content on demand request in the 201.129.0.0/16 service-domain then, and its process is omitted corresponding explanation with above-mentioned described identical with reference to Fig. 5 at this.
Under same inventive concept, Fig. 6 is the schematic block diagram that is redirected the re-positioning device 600 of multimedia content on demand request in the IPTV system according to an embodiment of the invention.Below in conjunction with accompanying drawing, the re-positioning device 600 of present embodiment is described in detail, wherein identical with front embodiment part is suitably omitted its explanation.
In the present embodiment, re-positioning device 600 can be configured on each node of IPTV system.
As shown in Figure 6, the re-positioning device 600 of present embodiment comprises: a plurality of access points 601
1-601
n,, can receive multimedia content on demand request from the user by these access points; Content type is determined device 602, and it determines the related multimedia content type of multimedia content on demand request that is received according to the access point number; And redirection device 603, it is redirected to suitable streaming media server according to the content-targeted strategy corresponding with determined multimedia content type with the multimedia content on demand request.
In the present embodiment, the node of IPTV system is via access point 601
1-601
nThe receiving multimedia content order request, access point 601
1-601
nIt can be the IP port.Each access point is associated with a multimedia content type, and the corresponding different content-targeted strategy of each multimedia content type.About access point, multimedia content type and content-targeted strategy thereof, describe in detail among the embodiment in front, repeat no more herein.
When from access point 601
1-601
nAfter receiving the multimedia content on demand request, content type determines that device 602 can determine multimedia content type according to the access point number.As previously mentioned, the corresponding relation of access point number and multimedia content type can be recorded in the incidence relation table in advance, can obtain corresponding multimedia content type by inquiry access point number then.
Then, redirection device 603 is redirected to suitable streaming media server according to the content-targeted strategy corresponding with multimedia content type with the multimedia content on demand request.Content-targeted strategy can be pre-determined by the service provider of IPTV system, and offers redirection device 603.
In the present embodiment, redirection device 603 will be realized being redirected of multimedia content on demand request by multi-level redirected mode.For this reason, to each node configuration rank directional strategy separately of IPTV system.
In redirection device 603, service-domain determination module 6031 is according to the source address of multimedia content on demand request, be identified for this multimedia content on demand requested service territory, then, judge module 6032 is judged the streaming server that whether has the node that multimedia content on demand request institute requested service can be provided in this service-domain based on the rank directional strategy of all nodes in the determined service-domain.Have such streaming server if judge module 6032 is judged as, then redirection module 6033 is redirected to this streaming server with the multimedia content on demand request.There is not such streaming server if judge module 6032 is judged as, checks that then module 6034 checks whether this service-domain has upper layer node.When this service-domain has upper layer node, the multimedia content on demand request is redirected to this upper layer node by redirection module 6033.When service-domain did not have upper layer node, then redirection device 603 was carried out other processing according to content-targeted strategy.
In judge module 6032, the quantity determining unit is determined the quantity of all nodes in the service-domain.When having only a node in the service-domain, the streaming media server determining unit determines to provide the streaming media server of service in the included streaming media server of this node, this moment, the judged result of judge module 6032 was to exist in the service-domain to be used to provide the streaming media server of service, and offered redirection module 6033.If the streaming media server determining unit is determined suitable streaming media server, then there is not the result of the streaming media server that is used to provide service in the judge module 6032 output service-domains.
If comprise a plurality of nodes in the service-domain, then determining unit determines whether the receiving node of receiving multimedia content order request is father node in service-domain.If father node, then the strategy execution unit is for the child node of this receiving node in the service-domain, according to the order of the priority of child node, carry out the rank directional strategy of each child node successively, and judge according to implementation status whether this child node can be used for providing institute's requested service by judging unit.If judgment unit judges can be used for this child node, then redirection module 6033 is redirected to this available child node with the multimedia content on demand request.Then, on this available child node, request is redirected to multimedia content on demand.If judgment unit judges is that this child node is unavailable, then the strategy execution unit is to next child node executive level directional strategy, and judged by judging unit.
If receiving node is not a father node, then the streaming media server determining unit determines to provide the streaming media server of service in the included streaming media server of this receiving node, and offers redirection module 6033.If the streaming media server determining unit be can not determine suitable streaming media server, then by redirection module 6033 request is redirected to the upper layer node of receiving node, request is redirected to multimedia content on demand in the redirection device of upper layer node then.
Further, be redirected, in judge module 6032, also comprise for avoiding circulation: record cell, its record was through multimedia content on demand request a period of time of this node, for example 30 seconds; And inspection unit, it checks the identical multimedia content on demand request that whether records from same node when receiving the multimedia content on demand request.If finding has identical multimedia content on demand request, show that then forming circulation is redirected, and then directly determines suitable streaming media server by the streaming media server determining unit.If there is not identical multimedia content on demand request, continue then that request is redirected to multimedia content on demand.
The re-positioning device 600 that should be pointed out that present embodiment can be realized the method for Fig. 1 to the redirected multimedia content on demand request of embodiment shown in Figure 3 in operation.And the re-positioning device 600 of present embodiment can be included in the server that is used for the IPTV system.
Should be understood that, re-positioning device of the foregoing description and part thereof can be by such as very lagre scale integrated circuit (VLSIC) or gate array, realize such as the semiconductor of logic chip, transistor etc. or such as the hardware circuit of the programmable hardware device of field programmable gate array, programmable logic device etc., also can use the software of carrying out by various types of processors to realize, also can realize by the combination of above-mentioned hardware circuit and software.
Though more than describe method and the re-positioning device that in the IPTV system, is redirected the multimedia content on demand request of the present invention in detail by some exemplary embodiments, but above these embodiment are not exhaustive, and those skilled in the art can realize variations and modifications within the spirit and scope of the present invention.Therefore, the present invention is not limited to these embodiment, and scope of the present invention is only defined by the appended claims.
Claims (12)
1. method that in IPTV (IPTV) system, is redirected the multimedia content on demand request, described IPTV system adopts has the tree structure of a plurality of nodes, wherein, each node has a plurality of access points and a plurality of streaming media server, each access point is associated with multimedia content type, and the content-targeted strategy that each multimedia content type is corresponding different, described method comprises:
From the multimedia content on demand request of access point reception from the user;
According to the access point number, determine the related multimedia content type of described multimedia content on demand request; And
According to the content-targeted strategy corresponding, described multimedia content on demand request is redirected to suitable streaming media server with determined multimedia content type.
2. method according to claim 1, wherein, each node also disposes rank directional strategy separately;
The described step that described multimedia content on demand request is redirected to suitable streaming media server comprises:
According to the source address of described multimedia content on demand request, be identified for described multimedia content on demand requested service territory;
Based on the rank directional strategy of all nodes in the described service-domain, judge the streaming server that whether has the node that described multimedia content on demand request institute requested service can be provided in the described service-domain;
If there is described streaming server in the described service-domain, then described multimedia content on demand request is redirected to described streaming server;
If there is not described streaming server in the described service-domain, check then whether described service-domain has upper layer node;
If described service-domain has upper layer node, then described multimedia content on demand request is redirected to described upper layer node; And
If described service-domain does not have upper layer node, then, carry out other processing according to described content-targeted strategy.
3. method according to claim 2, wherein, describedly judge that the step of the streaming server that whether has the node that described multimedia content on demand request institute requested service can be provided in the described service-domain comprises:
Determine the quantity of described service-domain interior nodes;
If described service-domain only comprises the receiving node that receives described multimedia content on demand request, then
Described receiving node determines to provide the streaming media server of described service in its included streaming media server;
If described receiving node be can not determine the streaming media server that described service can be provided, then be judged as and do not have the streaming media server that described service can be provided in the described service-domain;
If described service-domain comprises a plurality of nodes, then
Determine whether described receiving node is father node in described service-domain;
If described receiving node is the father node in the described service-domain, then
For the child node with limit priority of described receiving node in the described service-domain, carry out the rank directional strategy of described child node;
Judge whether described child node can be used for providing described service;
If described child node can be used, then
Described multimedia content on demand request is redirected to described child node;
Described child node determines whether to exist the sub-services territory that is used for described multimedia content on demand request;
If there is described sub-services territory, then with described sub-services territory as current service-domain, described child node as current receiving node, is returned the step of the quantity of described definite node;
If there is no described sub-services territory, then
Described child node determines to provide the streaming media server of described service in its included streaming media server;
If described child node be can not determine the streaming media server that service can be provided, then described multimedia content on demand request is redirected to described receiving node, described child node is judged as unavailable;
If described child node is unavailable, then according to the order of priority, successively for other child node of described receiving node in the described service-domain, return the step of above-mentioned executive level directional strategy, up to the streaming server of the child node of determining to provide described service or judge that all child nodes are all unavailable;
When judging that all child nodes are all unavailable, described receiving node determines to provide the streaming media server of described service in its included streaming media server;
If described receiving node be can not determine the streaming media server that described service can be provided, then
Under the situation of described child node as current receiving node, described multimedia content on demand request is redirected to the father node of this child node, this father node determines to provide the streaming media server of described service in its included streaming media server, if this father node be can not determine the streaming media server that described service can be provided, then be judged as and do not have the streaming media server that described service can be provided in the described service-domain;
Under the situation except above-mentioned situation, be judged as and do not have the streaming media server that described service can be provided in the described service-domain;
If described receiving node is not the father node in the described service-domain, then
Described receiving node determines to provide the streaming media server of described service in its included streaming media server;
If described receiving node be can not determine the streaming media server that described service can be provided, then described multimedia content on demand request is redirected to the upper layer node of described receiving node;
Described upper layer node as current receiving node, is returned whether above-mentioned definite described receiving node is the step of father node.
4. method according to claim 3, wherein, describedly judge that the step of the streaming server that whether has the node that described multimedia content on demand request institute requested service can be provided in the described service-domain also comprises:
Each nodes records is through multimedia content on demand request a period of time of this node;
When each node receives the multimedia content on demand request, check the identical multimedia content on demand request that whether records from same node;
If record identical multimedia content on demand request, then this node determines to provide the streaming media server of described service in its included streaming media server;
If do not have identical multimedia content on demand request, then carry out subsequent step.
5. according to any described method of claim 2 to 4, wherein, described rank directional strategy comprises:
First order strategy, it comprises whether node that check to use described first order strategy is whether load capacity movable and this node is above threshold value with the position degree of closeness between the described user, this node;
Second level strategy, it comprises checks first order strategy and whether has the content of multimedia of being asked at this intranodal; And
Third level strategy, but it comprises the load capacity of the streaming media server of checking second level strategy and this intranodal.
6. method according to claim 1, wherein, described multimedia content on demand request is received by the Centroid of described IPTV system or branch node or fringe node.
7. re-positioning device that in IPTV (IPTV) system, is redirected the multimedia content on demand request, it is configured on the node of described IPTV system, and described re-positioning device comprises:
A plurality of access points are used for the receiving multimedia content order request, and wherein each access point is associated with multimedia content type, and the corresponding different content-targeted strategy of each multimedia content type;
Content type is determined device, is used for according to the access point number, determines the related multimedia content type of described multimedia content on demand request; And
Redirection device is used for according to the content-targeted strategy corresponding with determined multimedia content type described multimedia content on demand request being redirected to suitable streaming media server.
8. re-positioning device according to claim 7, wherein, each node configuration of described IPTV system has rank directional strategy separately;
Described redirection device comprises:
The service-domain determination module is used for the source address according to described multimedia content on demand request, is identified for described multimedia content on demand requested service territory;
Judge module is used for the rank directional strategy based on all nodes in the described service-domain, judges the streaming server that whether has the node that described multimedia content on demand request institute requested service can be provided in the described service-domain;
Check module, be used to check whether described service-domain has upper layer node;
Redirection module is used for described multimedia content on demand request is redirected to described streaming server or described upper layer node;
Wherein, described redirection device also is configured to when service-domain does not have upper layer node, according to described content-targeted strategy, carries out other processing.
9. re-positioning device according to claim 8, wherein, described judge module comprises:
The quantity determining unit is used for determining the quantity of all nodes in the described service-domain;
Determining unit is used for determining whether described node is father node in described service-domain;
The strategy execution unit is used for the child node for described node in the described service-domain, carries out the rank directional strategy of described child node;
Judging unit is used to judge whether described child node can be used for providing described service;
The streaming media server determining unit is used at the definite streaming media server that described service can be provided of the included streaming media server of described node;
Wherein, described redirection module also is used for described multimedia content on demand request is redirected to available child node.
10. re-positioning device according to claim 9, wherein, described judge module also comprises:
Record cell is used to write down the multimedia content on demand request a period of time through described node; And
Inspection unit is used to check the identical multimedia content on demand request that whether records from same node.
11. to 10 any described re-positioning devices, wherein, described rank directional strategy comprises according to Claim 8:
First order strategy, it comprises whether node that check to use described first order strategy is whether load capacity movable and this node is above threshold value with the position degree of closeness between the described user, this node;
Second level strategy, it comprises checks first order strategy and whether has the content of multimedia of being asked at this intranodal; And
Third level strategy, but it comprises the load capacity of the streaming media server of checking second level strategy and this intranodal.
12. a server that is used for IPTV (IPTV) system comprises: as any described re-positioning device of claim 7 to 11.
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| CN109885720A (en) * | 2019-02-26 | 2019-06-14 | 杭州网易云音乐科技有限公司 | Song program request exchange method, medium, device and calculating equipment |
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| CN100583997C (en) * | 2007-10-19 | 2010-01-20 | 深圳华为通信技术有限公司 | Service starting method, device and system of network television, and network television terminal |
| CN101582919A (en) * | 2009-04-14 | 2009-11-18 | 冯俊秋 | Method and system for playing of Internet television |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109885720A (en) * | 2019-02-26 | 2019-06-14 | 杭州网易云音乐科技有限公司 | Song program request exchange method, medium, device and calculating equipment |
| CN109885720B (en) * | 2019-02-26 | 2021-01-26 | 杭州网易云音乐科技有限公司 | Music on demand interaction method, medium, device and computing equipment |
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