CN101365103B - Interactive service management method for cable television network - Google Patents
Interactive service management method for cable television network Download PDFInfo
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- CN101365103B CN101365103B CN2007101199987A CN200710119998A CN101365103B CN 101365103 B CN101365103 B CN 101365103B CN 2007101199987 A CN2007101199987 A CN 2007101199987A CN 200710119998 A CN200710119998 A CN 200710119998A CN 101365103 B CN101365103 B CN 101365103B
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Abstract
The invention relates to the cable communications field and provides a method for managing the interactive service of a cable TV network. Resource allocation and resource recycling are performed through registration and session with set-top box equipment, session and an SRM server to allocate and manage interactive service resources, thereby maximizing the utilization ratio for bandwidth resources and ensuring that the amount of maximum bandwidth resources needed for operation does not increase linearly along with the increase of media content. Therefore, the flexibility of a system is enhanced, the system response time is shortened, and the system is enabled to automatically recover from abnormal conditions.
Description
Technical field
The present invention relates to the wire communication field, more specifically, the present invention relates to a kind of management method of cable TV network interactive service.
Background technology
Traditional cable TV network carries out issuing of program data by Hybrid Fiber Coaxial (HFC), and the service of One-to-All Broadcast formula only is provided for the user in the network area.Hfc plant has bandwidth, capacity is big, cost is low, antijamming capability is strong, support multiple business, connect huge numbers of families' advantage, for the development of digital television techniques is laid a good foundation.Along with the development of digital television techniques and the progressively fusion of digital television techniques and IP technology,, the user will become the direction of cable TV network development for providing interactive stronger two-way interactive video traffic.Two-way interactive is meant such as the subscriber terminal equipment of set-top box and the data interaction between the video server, the TV programme that the no longer passive wait video server of user terminal is play, and by self return path to server requirement and select TV programme.
The Digital Television of traditional domestic households, all users are the common identical TV programme of passive viewing on whole bandwidth, and the bandwidth resources of hfc plant need not dynamic management.But in two-way video on demand business, the TV programme of each user's active program request and control has nothing in common with each other, all need to monopolize the physical channel of one tunnel hfc plant, the bandwidth of using between the different user can not be conflicted, and will be implemented in the purpose that service is provided for the user of maximum number on the limited total bandwidth simultaneously.Therefore, in this operation system constitutes, must use a kind of session and method for managing resource to come the bandwidth resources of using in the program request are carried out unified dynamic management; And in the resource use to resource with session status is monitored and record, accomplish fully, rationally and effectively.We can say that in using the VOD system of two-way cable TV network network as channel, session and method for managing resource are extremely important module management methods.
Two management objects of session and method for managing resource are " sessions " and " resource ".Session is meant the contact of setting up for the example of finishing once service between user and server, subscriber terminal equipment (as set-top box but be not limited to set-top box) is in order to visit a service, send session to server and set up request, set up a session with server, after service finishes, cancel session.The user need obtain resource when realizing the example of a service, the indication resource is the bandwidth of hfc plant herein, and media server issues media data in the bandwidth that this session obtains, and discharges resource after service is finished.Different services can be asked different resources, and resource allocation and session link together.In whole network range, there is a unique session identification to come session in the marked network, all resources that belong to a Service Instance all link together with this sign.By session and method for managing resource above-mentioned object is managed, make limited hfc plant bandwidth resources obtain effectively, make full use of, the user obtains the purpose of quality assurance order program service simultaneously.
The execution flow process of session and method for managing resource mainly comprises two parts in the prior art: 1) to set-top box (STB) initialization, be used to obtain the coverage at set-top box place, so that follow-up session foundation and resource allocation; 2) resource allocation and the recovery in the set-top box on-demand process.
Initialization to STB, generally utilize cable modem (Cable modem both at home and abroad, CM) authentication scheme obtains the address of STB coverage, the shortcoming that this method exists is that the requirement hfc plant is that CM inserts, owing to depend on the authentication scheme of CM, this machine-processed flexibility is restricted simultaneously; The validity and the stability of quadrature amplitude modulation modulator in edge of the prior art (IPQAM) resource management are not improved all the time, because the user of IPQAM resource often is not session and a resource management system itself, have conforming maintenance issues in addition.
Summary of the invention
For overcoming the defective of the flexibility of two-way cable TV network network interactive service management, validity, poor stability in the prior art, the present invention proposes a kind of management method of cable TV network interactive service.
A kind of management method of cable TV network interactive service may further comprise the steps:
Step 10), session and resource management (SRM) server issues feature stream and gives subscriber terminal equipment, after subscriber terminal equipment is received described feature stream, to SRM server sending node group id and self identification information, after the SRM server is received the information of subscriber terminal equipment, be the subscriber terminal equipment registration, and be " starting shooting " the state recording of this subscriber terminal equipment;
Step 20), subscriber terminal equipment sends order request to media server (MS), MS according to described order request to SRM server application resource, the SRM server is according to the resource requirement number and the address information of resolving the described subscriber terminal equipment that obtains from described order request, inquire about the login state and the occupation condition of described subscriber terminal equipment, be described subscriber terminal equipment Resources allocation, and the state of setting institute Resources allocation, reply MS, MS is that subscriber terminal equipment issues media content;
Step 30), after the subscriber terminal equipment program request finishes, the SRM server reclaims message according to the resource that MS sends, and upgrades resource status, reclaims resource.
Wherein, described SRM server possesses via IP local area network (LAN) and MS and carries out both-way communication, is the ability of SRM server to the one-way communication of IPQAM via IP local area network (LAN) and edge quadrature amplitude modulation modulator (IPQAM) travel direction; The ability to communicate of MS and SRM server are reciprocity; Subscriber terminal equipment possess with the IPQAM travel direction be that IPQAM is to the one-way communication of subscriber terminal equipment, carry out the ability of both-way communication respectively with SRM server and MS.
Wherein, described subscriber terminal equipment is meant any equipment that can receive the IPQAM content and issue this content.Wherein, feature stream comprises groups of nodes sign, the address information of SRM server and the address information of MS, and several that described groups of nodes is one or more IPQAM are shared the set of the output port (RF) of same frequency domain.
Wherein, step 10) also comprises step: the SRM server issues feature stream incessantly and gives IPQAM, and IPQAM is transmitted to the subscriber terminal equipment of being administered.
Wherein, step 10) also comprises step: the user opens subscriber terminal equipment at any time, subscriber terminal equipment search, receives the feature stream that comprises self groups of nodes sign, to SRM server sending node group id and self identification information.
Step 210), the described order request of SRM server parses wherein, step 20) further comprising the steps of: as, to obtain the required number of resources of subscriber terminal equipment and its address information; Step 220), the SRM server judges whether subscriber terminal equipment is registered, if unregistered, if then refusal request registered, inquires about and judges that described subscriber terminal equipment is current whether take resource, if the resource of taking then with the MS communication, reclaims and takies resource; Step 230), SRM server lookup resource pool, from the idling-resource of system, be the subscriber terminal equipment Resources allocation according to the load balancing principle, simultaneously resource status is recorded as " preassignment ";
Step 240), SRM server notification MS, MS issues media content via the frequency that the IPQAM under the described subscriber terminal equipment distributes, the SRM server is recorded as " in the use " with this resource status after receiving the affirmation message of subscriber terminal equipment success playing media content.Wherein, the load balancing principle comprises: if a groups of nodes comprises a plurality of IPQAM, then select the IPQAM of load minimum; In IPQAM inside, select the output port of the load minimum of described IPQAM; In output port inside, load balancing between the frequency of consideration output port.Wherein, SRM server recovery resource step comprises step 30): the notice of the passive wait of SRM server MS reclaims resource, and the SRM server is received the recovery message related to resources of MS, and this resource status is recorded as " free time ", and resource is recovered into resource pool.
Wherein, step 30) SRM server recovery resource step also comprises in: the SRM server is every the survival condition of one section long time check state for " in the use " resource, every one section short time check state is the survival condition of " preassignment " resource, obtain the session list of current survival, described tabulation is sent to MS, MS confirms resource status, send resource and reclaim message, the SRM server receives the resource recovery message that MS sends, and upgrades resource status then, reclaims resource.
By using the present invention, make the system bandwidth resource utilization reach maximum, and the number of the runing required maximum bandwidth resource linear growth with the growth of media content number not, it is minimum that required cost reaches; Improved flexibility, the extended capability of system, and the system that makes can realize under abnormal conditions from recovering.
Description of drawings
Fig. 1 is the overall system architecture figure of two-way cable TV network network interactive service;
Fig. 2 is SRM overall frame structure figure;
Fig. 3 is the groups of nodes conceptual schematic view;
Fig. 4 is the register flow path figure of SRM to set-top box;
Fig. 5 is the resource allocation flow chart of SRM;
Fig. 6 is the resource allocation policy schematic diagram of SRM.
Embodiment
The present invention can be applicable to based on hfc plant, the interactive service content delivering system that the daynamic bandwidth managment demand is arranged, the present invention's interactive service also applicatory system includes but not limited to time-moving television (TVOD), video request program (VOD), network personal video recorder (Network Personal Video Recorder, NPVR), exchange broadcasting (switched broadcast), TV (on demanddistribution of television programming as required distributes, ODDTP), numeral video on demand service (swtiched digital video, SDV), ip voice (Voice over IP, operation system such as VoIP).
Fig. 1 is the overall system architecture figure of a two-way cable TV network network interactive service, comprises primary clusterings such as SRM server, MS, IP network, IPQAM, hfc plant, STB.
Wherein, MS and SRM server, the local area network (LAN) that also has IP network to connect to form, the fore-end of formation system; The system front end part comprises that also a series of Control Servers issue the assembly (figure omits) of the media content that is used for the terminal equipment reception and shows, for example media content provides system's (as TV programme collection, processing, encrypting module), operation support module (charge, authorize as the user) etc.The input port of IPQAM is connected to SRM server and MS server by IP network, and output port is connected to hfc plant, and is interconnected by hfc plant and subscriber terminal equipment (as STB but be not limited to STB); The data that IPQAM reception MS and SRM server are sent are transformed to the form that is fit to the hfc plant transmission with it, the more important thing is that the essential processing of cable television service such as IPQAM will modulate Media Stream, frequency conversion output to hfc plant then.Cable Modem Terminal System (cable modem terminalsystem, CMTS) also connect IP network and hfc plant respectively, different with IPQAM is, CMTS is the bi-directional device that an information is transmitted, the transfer of data that IP network can be sent is to hfc plant, and also the transfer of data that hfc plant can be sent is to IP network.Have many IPQAM in the system, every IPQAM has connected some STB.STB is a digital terminal equipment, can receive content that IPQAM issues and the television set of presenting to the user.The present invention is not limited to STB, can be any equipment that can receive the IPQAM content and issue this content, for example integrated computer of correlation function module.
In system with Fig. 1 framework, session that the present invention proposes and method for managing resource make the SRM server possess via above-mentioned local area network (LAN) and MS carry out two-way IP communication, via the unidirectional (ability that direction is SRM-＞IPQAM) communication, carry out two-way communication via CMTS and STB of above-mentioned local area network (LAN) and IPQAM; The ability of MS and SRM server are reciprocity; STB possesses that (direction is IPQAM-＞STB), with the ability of SRM server and MS both-way communication with the IPQAM one-way communication.
As shown in Figure 2, the session of the present invention's proposition and the three-layer architecture of method for managing resource when realizing are as described below:
Bottom is a database layer, is responsible for the persistence and the storage of data;
The centre is a Business Logic, comprises: 1) message sink processing engine is used for the message of multithreading receiving set up box and MS; 2) registration service module is used to issue wheel and broadcasts bag (periodically send to the packet that each IPQAM realizes the registration of service module by the SRM server, be referred to as wheel and broadcast bag), handles the set-top box login request message that receives; 3) resource distribution module is used to handle the resource request message of reception; 4) resource recycling module, in the resource release message that handle to receive, that carries out self initiatively reclaims resources mechanism.Wherein 2), 3) and 4) described in three modules operating database where necessary, and produce response message, send to MS or STB;
The upper strata is a user interface layer, for cable television operators provide visual configuration, management and monitoring platform.
The work in 24 hours of SRM server, parallel provide service for a plurality of STB, at any time receive message from the difference in functionality of MS and a plurality of set-top box, distinguish different sessions by the session identification number (SessionId) that comprises in the message, distinguish different STB by STB identification number (STBid), distinguish different message by type of message,, handle accordingly different messages such as registration, resource request, resource allocations.
Ordinary skill people in this area can know and know, the above proposes the applied environment of method for the present invention and the software configuration module when using is divided, for the session resource management method that is used for two-way cable TV network network interactive service proposed by the invention, it key step that comprises, based on principle and the specific implementation flow process with as mentioned below.
A kind of step that is used for the session resource management method of two-way cable TV network network interactive service that the present invention proposes comprises:
Step 10), SRM server be continual to issue feature stream by IPQAM and gives all set-top box;
Step 20), after the user opens set-top box at any time, set-top box can be received the feature stream that issues described in the step 10) automatically, applies for the registration of to the SRM server then, the SRM server is finished the registration of set-top box;
Step 30), set-top box after the MS program request, MS is to SRM server application resource, SRM server-assignment resource is set resource status, and replys MS, MS is that subscriber terminal equipment issues media content;
Step 40), after the set-top box program request finishes, the SRM server is received the notice of MS and is reclaimed resource or initiatively reclaim resource by self robust mechanism.
The session resource management method that the present invention proposes as described below based on principle and specific implementation flow process:
1 registration
1.1 registration purpose
The present invention has taken into full account the problem in the actual operation, at first, set-top box point sowing time, must hold the IP address information of SRM server and MS, could carry out interacting message with SRM server and MS, thereby obtain media content that is used to watch and the resource that is used to issue medium, still, for set-top box, if when manufacturing just with this information write-in memory, can not adapt to flexible and changeable operating environment, in case change has taken place in the IP address of SRM server or MS, with regard to intractable; Secondly, as shown in Figure 3, an IPQAM has 12 output ports, according to actual needs with physics arrange net different, annexation is also different, might 12 port parallel connections export, also might be divided into several mutual not groups of UNICOM and export respectively, also a plurality of IPQAM flexible combination of possibility are supported on software when this just needs the SRM server to realize, setting up the notion of " group ", is that unit manages with the group; The 3rd, the output of IPQAM arrives user's set-top box by hfc plant, and therefore every set-top box also is subordinated to a specific group, the IPQAM resource in can only the use group, and the dependency information that the SRM server must be held set-top box could be its Resources allocation.But for a certain set-top box, before being bought by the user, subordinate relation is unknown, and it is also inadvisable to buy the artificial configuration mode in back.
For realizing the registration purpose, address the above problem, the set-top box registration scenarios that this paper proposes is based on groups of nodes.
The notion of groups of nodes has four layers of implication, as Fig. 3, and the first, for entity IPQAM, the set of several output ports (RF) that groups of nodes is one or more IPQAM; Second, real network circuit for Access Network, all RF outputs of same groups of nodes are communicated with, share a frequency domain, just each frequency of synchronization can only for a media content service (for example, export if central authorities' one cover is modulated at the frequency of 900MHZ, just can not again central authorities' two covers be modulated at 900MHZ), which RF that comprises which IPQAM in each groups of nodes is artificially selected according to all factors before operation; Therefore the 3rd, for set-top box, the output of IPQAM arrives set-top box by access network, and every set-top box also is subordinated to a specific groups of nodes, the IPQAM resource in can only the use group; The 4th, for the SRM server, in database, in the reality operation, as a resource pool, be the set-top box Resources allocation in this group with the resource of the whole RF in the groups of nodes with the groups of nodes information storage determined before the operation.The bandwidth resources that groups of nodes comprises are exactly the summation of the resource that can use in certain time of the user of this groups of nodes.The groups of nodes information table is fixing before operation, but the corresponding relation mapping table of groups of nodes and set-top box is dynamically to generate when finishing registration behind set-top-box opening.
1.2 registration realization flow
The SRM server uses wheel to broadcast the machine-processed registration of finishing set-top box behind set-top-box opening, as shown in Figure 4:
At first, SRM server periodicity, blanket type are that each node group of self-management sends feature stream, and the feature stream content comprises the groups of nodes sign of this node group subordinate, the address information of SRM and the address information of media server.Feature stream issues and transmits by IPQAM a known frequency, arrives each set-top box.
After the user connected the set-top box power supply at any time, set-top box was at known frequency search characteristics stream, and each set-top box receives and can only receive the feature stream that comprises self groups of nodes information.Set-top box is resolved its content, thereby obtain the group id of self, obtain the communications parameter with SRM server and media server simultaneously, initiatively and the communication of SRM server, give the SRM server self groups of nodes information, set-top box self identification, username and password untill further notice.
The SRM server is judged after receiving the information of set-top box, if this set-top box is legal, is the set-top box registration in the mapping table of set-top box and groups of nodes, and with the state recording of this set-top box for starting shooting.The SRM server only provides service for the set-top box of having carried out registration.
Consider that set-top box may roam, can finish and only finish once registration automatically after the each start of set-top box, just can carry out the program request flow process afterwards.These scheme characteristics are that set-top box does not need to store the IP address of SRM server and the IP address of media server, and the physical location of set-top box also can change, and in the actual operation good flexibility are arranged.
2. resource management
2.1 management thought
Generally, on the one hand, the SRM server is managed dynamically to the frequency resource of IPQAM, make the user can only be during session in busy channel, make resource reach peak use rate; On the other hand, issue Media Stream with the clean culture form between duration of exclusivity, for the user provides the service that service quality (QOS) ensures.
In order to reach system's fastest response speed, the present invention uses the thread pool technology of JAVA language when realizing.When SRM server and MS and set-top box are carried out two-way communication, use transmission control protocol (TCP) to connect.During actual the operation, especially peak period in evening, user concurrent request quantity is very big, in order to improve to concurrent request responding speed, a lot of threads of disposable initialization whenever the message arrival of a MS or set-top box, are just taken out a thread and are handled from the pond, finish using and put back to thread pool, prepare for using next time.
In order to use Limited resources to provide bandwidth as the user of maximum number, and keep the real-time peak use rate of bandwidth, method of the present invention use following effectively, the Resource Management Algorithm of robust.IPQAM preserve frequency and with User Datagram Protoco (UDP) (UDP) port mapping table one to one, so the SRM server is to the management of frequency resource, just is converted into the management to udp port number.
2.2 resource allocation policy
MS self is storage resources information not, and issuing stream before must be to SRM server requests resource, and request message comprises this set-top box identification parameter.After the SRM server receives message, for the concrete steps of its distribution are described as follows as shown in Figure 5:
(1) the SRM server is resolved from order request message and is obtained required number of resources of set-top box and IP address information;
(2) SRM server Query Database at first judges whether set-top box is registered, if the request of unregistered just refusal, if it is registered, just inquire about and judge that this set-top box is current whether take resource, if taken resource just with the MS communication, at first this resource is reclaimed;
(3) after above-mentioned steps is finished, resource pool in the inquiry its data storehouse, if resource is used up, just refusal request, otherwise, from the idling-resource of system according to following load balancing principle for it distributes one, simultaneously resource status is recorded as " preassignment ", and produces the unique session identification number (sessionID) of overall situation record in the lump;
(4) subsequently with this information notice MS, MS is via this IPQAM, and issue media content at the frequency that distributes, afterwards, after the SRM server is received the affirmation message of set-top box success playing media content, this resource status is recorded as " in the use ", and is " in the program request " the state recording of this set-top box.
For above-mentioned flow process, have 2 explanations to need explanation:
First; certain set-top box is under the situation that has taken resource; still can send resource bid message; this abnormal conditions are inevitable; reason may be to be last time reason abnormal reclaim of the resource of its distribution owing to MS; or fault appearred in this set-top box, or even this message since network congestion be repeated to send.Therefore, can only use 1 unicast resource at most in order to ensure every set-top box, it is very necessary that this resource status is set step.Otherwise in case set-top box breaks down, frequent program request if SRM distributes at every turn, is a kind of waste to resource.
The second, the SRM allocation algorithm in the inventive method has been considered the load balancing principle.If a groups of nodes comprises a plurality of IPQAM, then select the IPQAM of load minimum; Then select the output port of the load minimum of this IPQAM in IPQAM inside; In output port inside, then consider load balancing between the frequency of output port, for example, certain comprises the groups of nodes of 1 output port, 4 frequencies have 4 * 6=24 available port, when selecting port so, preferentially according to the reciprocal order of frequency 1 → frequency 2 → frequency 3 → frequency 4 → frequency 1..., the code check when avoiding using same frequency to transmit multi-channel program is excessive.
2.3 resource reclaims
After the set-top box program request finishes, carry out resource by MS notice SRM server and reclaim.In the real system, may have the set-top box power down, the power down of SRM server, MS power down, network communication freely do not wait unusually, so resource reclaims the characteristics must possess robust, self recovery, could guarantee the circulation of system resource and make full use of.
Its recovery method as resource of the SRM server that the present invention proposes has two kinds, and they operate in the system simultaneously:
First kind, the notice of the passive wait of SRM server MS and reclaim resource.For example the set-top box program request finishes or program request in after the abnormal power-down, the SRM server is received the recovery message related to resources of MS, and this resource status is recorded as " free time ", and resource is recovered into resource pool, waits for sub-distribution down.Under the overwhelming majority situation, resource obtains reclaiming by this mechanism.
Second kind, the SRM server initiatively reclaims the resource of distribution by the robust mechanism of self, as shown in Figure 6.In actual operation, occur such as under the abnormal conditions that the set-top box internal processes is made mistakes, set-top box is shut down unusually, network congestion packet loss, on-demand process are unusual, media server recording exceptional etc. is difficult to avoid, make when the SRM server fails to receive the recovery message related to resources of media server, still keep the resources effective utilization.Concrete mechanism is: the SRM server is every the survival condition of one section long time (as every 1 hour) inspection state for " in the use " resource, and every one short period (as every 5 minutes), the inspection state is the survival condition of " preassignment " resource.Inspection method is the same; at first check its data storehouse; obtain session (SESSION) tabulation of current survival; this tabulation is sent to media server; the state of SESSION during media server is confirmed to tabulate one by one, flow process afterwards is the same with the normal flow process that reclaims, and the SRM server receives the resource recovery message that MS sends; upgrade self database then, reclaim resource.
By using the present invention, make resource utilization reach maximum, and linear growth is not a standard with the high peak number of the program request of a certain period only with the growth of media content number to run the number of required maximum bandwidth resource, dispose like this such as the new service of opening new channel, it is minimum that required cost reaches.
By using the present invention, improved the flexibility height of system, needn't write the ip address of SRM server when dispatching from the factory such as the terminal equipment of set-top box, the IP of SRM server and media server can change with actual demand.
By using the present invention, the system that makes is independent of concrete business, can support a plurality of business simultaneously, and professional expansion easily.
By using the present invention, reduce system response time, after user's program request, be in the very short time of the order of magnitude with the second, just can begin to watch, near seamless experience.
By using the present invention, the system that makes can be from recovering under abnormal conditions, in the actual operation system occur that the set-top box internal processes is made mistakes, set-top box is shut down unusually, under the situations such as network congestion packet loss, on-demand process are unusual, media server recording exceptional, can be from recovering.
It should be noted that at last, above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, and on using, can extend to other modification, variation, application and embodiment, think that simultaneously all such modifications, variation, application, embodiment are within the spirit and scope of the present invention.
Claims (10)
1. the management method of a cable TV network interactive service may further comprise the steps:
Step 10), session and resource management (SRM) server issues feature stream and gives subscriber terminal equipment, after subscriber terminal equipment is received described feature stream, to SRM server sending node group id and self identification information, after the SRM server is received the information of subscriber terminal equipment, be the subscriber terminal equipment registration, and be " starting shooting " the state recording of this subscriber terminal equipment;
Step 20), subscriber terminal equipment sends order request to media server (MS), MS according to described order request to SRM server application resource, the SRM server is according to the resource requirement number and the address information of resolving the described subscriber terminal equipment that obtains from described order request, inquire about the login state and the occupation condition of described subscriber terminal equipment, be described subscriber terminal equipment Resources allocation, and the state of setting institute Resources allocation, reply MS, MS is that subscriber terminal equipment issues media content;
Step 30), after the subscriber terminal equipment program request finishes, the SRM server reclaims message according to the resource that MS sends, and upgrades resource status, reclaims resource.
2. the process of claim 1 wherein that described SRM server possesses via IP local area network (LAN) and MS and carries out both-way communication, is the ability of SRM server to the one-way communication of IPQAM via IP local area network (LAN) and edge quadrature amplitude modulation modulator (IPQAM) travel direction; The ability to communicate of MS and SRM server are reciprocity; Subscriber terminal equipment possess with the IPQAM travel direction be that IPQAM is to the one-way communication of subscriber terminal equipment, carry out the ability of both-way communication respectively with SRM server and MS.
3. the process of claim 1 wherein that described subscriber terminal equipment is meant any equipment that can receive the IPQAM content and issue this content.
4. the process of claim 1 wherein that feature stream comprises groups of nodes sign, the address information of SRM server and the address information of MS, several that described groups of nodes is one or more IPQAM are shared the set of the output port (RF) of same frequency domain.
5. the process of claim 1 wherein that step 10) also comprises step: the SRM server issues feature stream incessantly and gives IPQAM, and IPQAM is transmitted to the subscriber terminal equipment of being administered.
6. the method for claim 1, wherein step 10) also comprises step: the user opens subscriber terminal equipment at any time, subscriber terminal equipment search, receive the feature stream that comprises self groups of nodes sign, to SRM server sending node group id and self identification information.
7. the process of claim 1 wherein step 20) further comprising the steps of:
Step 210), the described order request of SRM server parses, obtain the required number of resources of subscriber terminal equipment and its address information;
Step 220), the SRM server judges whether subscriber terminal equipment is registered, if unregistered, if then refusal request registered, inquires about and judges that described subscriber terminal equipment is current whether take resource, if the resource of taking then with the MS communication, reclaims and takies resource;
Step 230), SRM server lookup resource pool, from the idling-resource of system, be the subscriber terminal equipment Resources allocation according to the load balancing principle, simultaneously resource status is recorded as " preassignment ";
Step 240), SRM server notification MS, MS issues media content via the frequency that the IPQAM under the described subscriber terminal equipment distributes, the SRM server is recorded as " in the use " with this resource status after receiving the affirmation message of subscriber terminal equipment success playing media content.
8. the method for claim 7, wherein, the load balancing principle comprises: if a groups of nodes comprises a plurality of IPQAM, then select the IPQAM of load minimum; In IPQAM inside, select the output port of the load minimum of described IPQAM; In output port inside, load balancing between the frequency of consideration output port.
9. the method for claim 1, step 30 wherein) the SRM server reclaims the resource step and comprises in: the notice of the passive wait of SRM server MS reclaims resource, the SRM server is received the recovery message related to resources of MS, and this resource status is recorded as " free time ", and resource is recovered into resource pool.
10. the method for claim 1, step 30 wherein) the SRM server reclaims the resource step and also comprises in: the SRM server is every the survival condition of one section long time check state for " in the use " resource, every one section short time check state is the survival condition of " preassignment " resource, obtain the session list of current survival, described tabulation is sent to MS, MS confirms resource status, send resource and reclaim message, the SRM server receives the resource recovery message that MS sends, upgrade resource status then, reclaim resource.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101199987A CN101365103B (en) | 2007-08-06 | 2007-08-06 | Interactive service management method for cable television network |
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| CN2007101199987A CN101365103B (en) | 2007-08-06 | 2007-08-06 | Interactive service management method for cable television network |
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| CN101365103A CN101365103A (en) | 2009-02-11 |
| CN101365103B true CN101365103B (en) | 2010-06-02 |
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| CN2007101199987A Expired - Fee Related CN101365103B (en) | 2007-08-06 | 2007-08-06 | Interactive service management method for cable television network |
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