CN100461766C - Method and device for distributing resource of real-time flow-media business - Google Patents
Method and device for distributing resource of real-time flow-media business Download PDFInfo
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Abstract
The invention relates to a method of real-time flow media service distribution resource, wherein it comprises: the group data service node catches the flow media service report sent by user terminal; analyzing said report to judge the start of real-time flow media service, to initialize the refresh of data pack protocol PDP context, and perform resource for said real-time flow media service; judging the end of said service, to initialize the refresh of PDP context, and recycle the preformed resource. The invention also provides a relative device, which comprises: a detecting/analyzing module for catching and analyzing the service report sent from user terminal, a match judging module for matching the flow media service and the speed, and a resource manage module for performing relative resource for the real-time flow media service, based on the speed. The invention can confirm the service quality of flow media service and improve the network resource utilization.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and device of distribution service resource.
Background technology
The develop rapidly of data service, the development of class data service (as streaming media service) has especially in real time brought very big impact to existing network.Class data service data volume is big in real time, requires time delay low, is a very big test for conventional data network.Along with the growth of real-time class data service, proposed following demand for existing network: network can make a distinction real time business and non-real-time service, promptly can possess service sensing ability; Can do differentiation to the real time business that perceives and handle, promptly possess professional differentiation disposal ability.This shows that service sensing ability is to ensure wireless network traffic quality (Quality of Service, prerequisite QoS).
(Universal Mobile Telecommunications System, UMTS) network field are important contents of 3GPP consensus standard for the perception of data service in universal mobile telecommunications system.Referring to Fig. 1, be the professional aware scheme schematic diagram of existing 3GPP Release 1999 standard proposition.
Shown in Figure 1 passing through in the process that business is perceived as the traffic assignments resource, network equipment (as Gateway GPRS Support Node GGSN) does not possess service sensing ability, service sensing ability depend on user terminal (User Equipment, UE).Yet, because the capabilities limits of user terminal own, user terminal is being set up protocol data bag (Protocol Data Packet, PDP) in the context request, entrained service quality (Quality of Service, QoS) demand of parameter and operation layer may be also not quite identical, that is to say, user terminal to send up gives the qos parameter of UMTS network also not exclusively credible, and network side (as wireless access network RAN/ core net CN/ business platform) does not possess service sensing ability, can't truly perceive the service attribute (as Traffic class) of the actual transmission of user's face.So in the 3GPP R99 stage, the method according to the QoS classification and the parameter of user terminal requests guarantees service quality can not satisfy the real time business demand fully.If user terminal is set up in the request at PDP Context and do not carried qos parameter, network side generally comes to be professional reserved resource by default qos parameter or the signatory qos parameter of user.Obviously, default parameter is not necessarily consistent with user's current business demand with the signatory qos parameter of user.
In sum, the scheme of passing through the user terminal perception service that is proposed in 3GPP Release 1999 standard has following shortcoming:
1, network side can't the active perception user real time flow medium business of request, therefore can't and reclaim corresponding resource at the streaming media service dynamic assignment of application.
2, the business attribute information that network side can't the request of active perception customer service can only just can provide streaming media service for all customer services bandwidth of all giving security, thereby might cause the wasting of resources.
3, the correctness of quality of service request dependence user terminal and user terminal are used and are made correct professional perception, qos parameter mapping and professional application, user terminal and user terminal application layer are too relied on, thereby may be limited because of ability of user terminal, cause reporting information inaccurate, cause the quality of service of real time business to can not get guaranteeing.
In 3GPP R6 consensus standard, a kind of structure system of QoS has end to end been proposed.Referring to Fig. 2, be a kind of professional aware scheme schematic diagram of existing 3GPP R6 consensus standard proposition.
Shown in Figure 2 passing through in the process that business is perceived as the traffic assignments resource, the UMTS network possesses service sensing ability, but requires the binding mechanism of user terminal and network support IP bearing bed and application layer simultaneously.Binding mechanism combines the PDP Context carrying with qos policy information, the information of binding comprises token (Authorization Token, this token is distributed by policy control functions) and IP Media Stream sign (IP FlowIdentifier).UMTS end-to-end QoS structure system needs user terminal to possess following ability: support Session Initiation Protocol, support the secondary activating ability, support token mechanism etc.
In the scheme of the perception service that is proposed in the 3GPP R6 consensus standard, because type of user terminals and application software in the existing network are numerous, and problems such as the QoS ability of user terminal is inconsistent, cause that (Wide-band Code Division Multiple Access, WCDMA) end-to-end quality of service is difficult to guarantee in the network at current WCDMA access system.In addition, this scheme both had specific (special) requirements to user terminal, can support standard Go interface and Gq interface simultaneously to network also requirement again, was difficult to carry out in a short time, thereby influenced popularizing and promoting of streaming media service.
Prior art has also proposed a kind of terminal capability that do not rely on, the method for the service server perception streaming media service by network side.
Referring to Fig. 3, the schematic diagram of a kind of perception streaming media service scheme that provides for prior art.After service server is received the service request of user terminal, to qos policy decision making function (Policy DecisionFunction, PDF) initiate the quality of service request, PDF initiates resource request to GGSN, GGSN initiates the PDP Context refresh flow, upgrades network side and the user terminal qos parameter at the streaming media service of being asked.
By above flow process as can be seen, functional effect that above-mentioned prior art scheme provides and 3GPP R6 standard basically identical, and be not subjected to the capabilities limits of user terminal, user terminal does not need to support SIP signaling, secondary activating or token mechanism that exploitativeness is strong.But this programme has following shortcoming: adopt nonstandard protocol, the protocol interaction complexity needs the supporting support of GGSN, PDF and three products of streaming media server, and the engineering construction difficulty is relatively large.
Summary of the invention
The invention provides a kind of for the method for real time flow medium traffic assignments resource, real time flow medium business by network side perception user request, dynamically reserve corresponding resource and reclaim reserved resource for the real time flow medium of user's request is professional, when guaranteeing the streaming media service quality, improve network resource utilization to be implemented in.
The present invention provides a kind of device of real time flow medium traffic assignments resource that is in addition.
The inventive method comprises step:
Group data service node is caught the streaming media service message that user terminal sends;
Judge that by resolving described streaming media service message the professional beginning of real time flow medium is arranged, initiate the data pack protocol PDP Context and upgrade, be the professional reserved resource of this real time flow medium; Judging has the real time flow medium service ending, initiates PDP Context and upgrades, and regains to be the professional reserved resource of this real time flow medium.
Described group data service node is caught the streaming media service message that user terminal sends, and comprising:
The service application layer message that user terminal sends is caught and resolved to group data service node by detecting the Gi interface;
Be complementary by message information that will parse and the streaming media service match information of presetting, judge whether the message that captures is the streaming media service message.
Described default streaming media service match information is a flow-medium performance source information.
Described flow-medium performance source information is RTSP agreement stiff end slogan, the streaming media server IP address of streaming media server controls playing flow-medium performance, or the uniform resource locator URL address in flow-medium performance source, or the combination in any of above information.
According to said method of the present invention, when group data service node parsed the order that comprises setting or playing stream media program in the described streaming media service message, judging had the professional beginning of real time flow medium; When comprising the order that finishes flow-medium performance in parsing described streaming media service message, judging has the real time flow medium service ending.
According to said method of the present invention, after group data service node receives that streaming media service message and judgement have the professional beginning of real time flow medium, the speed of streaming media service is set, upgrade the PDP Context parameter, be the streaming media service bandwidth reserved.
In the said method, group data service node parses rate information from described streaming media service message, or obtains the speed that is complementary with described streaming media service according to default streaming media service rate matching information, and the speed of streaming media service is set.
According to said method of the present invention, when real time flow medium business and other service concurrences and a shared PDP Context, it is the corresponding resource of the professional reservation of described real time flow medium that group data service node adopts default algorithm.
In the said method, when concurrent described other business were the real time flow medium business, then described default algorithm comprised that the speed of the business of choosing speed maximum in the voice and packet data concurrent service or first initiation is set to the professional common speed of concurrent real time flow medium; Or the speed of voice and packet data concurrent service superposeed, the speed after the stack is set to the professional common speed of concurrent real time flow medium, upgrades the quality of service qos parameter in the PDP Context;
When concurrent described other business were the real time business of non-Streaming Media type, then described default algorithm comprises chose the speed that speed maximum in the voice and packet data concurrent service is set to described real time flow medium business; Or the speed of voice and packet data concurrent service superposeed, the speed after the stack is set to the speed of described real time flow medium business, upgrades the qos parameter in the PDP Context;
When concurrent described other business are non-real-time service, then choose the speed of real time flow medium business, upgrade the qos parameter in the PDP Context.
According to said method of the present invention, after a service ending in the real time flow medium business of a plurality of concurrent and shared PDP Contexts, group data service node is according to regaining the part resource of reservation for the mode of a plurality of concurrent professional reserved resources of real time flow medium;
After a plurality of concurrent real time flow medium business all finished, group data service node was regained all resources of reserving.
In the said method,, then after one of them service ending, from the speed of current stack, deduct this professional speed, upgrade the qos parameter in the PDP Context if group data service node adopts the mode of stack speed that the speed of real time flow medium business is set;
If group data service node is chosen the speed that flank speed is provided with the real time flow medium business, then after one of them service ending, choose the flank speed in the also unclosed streaming media service, upgrade the qos parameter in the PDP Context.
According to said method of the present invention, described group data service node is regained and is the professional reserved resource of described real time flow medium, realizes by following steps:
Qos parameter in the PDP Context is updated to system default value; Or
Qos parameter in the PDP Context is reverted to described real time flow medium service resources upgrade preceding numerical value.
According to said method of the present invention, after the group data service node judgement has the professional beginning of real time flow medium, in setting-up time, detect user terminal and whether initiate to set up a new PDP Context at described real time flow medium business, if the former PDP Context of then restraining carrying described real time flow medium business upgrades; Otherwise, initiate renewal to described former PDP Context.
According to said method of the present invention, after group data service node initiation PDP Context is updated to the professional reserved resource of real time flow medium, when detecting user terminal again and initiating to set up a new PDP Context, regain it and be this real time flow medium business reserved resource in former PDP Context at described real time flow medium is professional.
Device provided by the invention comprises:
Detection/parsing module, matching judgment module and resource management module;
Described detection/parsing module detects message and the parsing that user terminal sends, and the message information that parses is sent to described matching judgment module;
When described matching judgment module has streaming media service to begin according to the message information judgement that parses, send the instruction of reserved resource to described resource management module; Judge when the real time flow medium service ending is arranged, send the instruction of regaining reserved resource to described resource management module;
Described resource management module is initiated corresponding PDP Context according to instruction and is upgraded, and is professional reserved resource of real time flow medium or withdrawal reserved resource.
According to said apparatus of the present invention, described detection/parsing module detects the Gi interface, catches and resolve the service application layer message that user terminal sends.
According to said apparatus of the present invention, described matching judgment module comprises professional matched sub-block, professional beginning/end judgement submodule and rate-matched submodule;
Described professional matched sub-block is complementary message information that parses and the streaming media service match information of presetting, judge whether streaming media service message of the message capture, if then start described professional beginning/end and judge submodule and described rate-matched submodule;
Described professional beginning/end is judged when submodule is judged the order that comprises setting or playing stream media program in the message information, to the instruction of described resource management module transmission reserved resource; Judge and send the instruction of regaining reserved resource to described resource management module when comprising the order that finishes flow-medium performance in the message information;
The speed that streaming media service rate matching information setting that described rate-matched submodule basis is default and real time flow medium business are complementary, or the speed of streaming media service is set, and the rate information that is provided with is sent to described resource management module according to the rate information that from the streaming media service message, parses;
Described resource management module is received the resource reservation instruction or/and behind the rate information of described setting, according to the qos parameter of the speed renewal PDP Context that is provided with, for the professional reservation of real time flow medium guarantees bandwidth; After receiving the instruction of regaining reserved resource, speed or streaming media service that present rate is set to system default begin preceding speed, upgrade the parameter of PDP Context, and regaining is the professional assurance bandwidth of reserving of real time flow medium.
In the said apparatus, described matching judgment module also comprises a concurrent judgement/processing sub;
When described concurrent judgement/processing sub is judged the real time flow medium business with other service concurrences and a shared PDP Context, be that streaming media service is provided with speed according to default algorithm, and the rate information that is provided with is sent to described resource management module;
When described concurrent judgement/processing sub is judged service ending in the real time flow medium business of a plurality of concurrent and shared PDP Contexts, according to default algorithm is that also unclosed streaming media service is provided with speed, and the rate information that is provided with is sent to described resource management module;
After described concurrent judgement/processing sub judges that an a plurality of concurrent and real time flow medium business shared PDP Context all finish, speed or streaming media service that current speed is set to system default begin preceding speed, and the rate information that is provided with is sent to described resource management module;
Described resource management module is initiated PDP Context and is upgraded according to the qos parameter of the speed renewal PDP Context that is provided with.
In the said apparatus, described matching judgment module also comprises PDP Context detection/processing sub;
Described PDP Context detection/processing sub detects user terminal when initiating to set up a new PDP Context at described streaming media service, send the instruction of restraining resource reservation to described resource management module, restrain the former PDP Context that carries described streaming media service is initiated to upgrade; Or
Send the resource recovery command to described resource management module, being retracted in the former PDP Context that carries described streaming media service is this streaming media service reserved resource.
Beneficial effect of the present invention is as follows:
(1) the present invention is by being detected and resolved the message of Gi interface by the group data service node of network side, judge whether user terminal initiates the relevant business of real time flow medium, and according to the rate information in static match information that sets in advance or the dynamic analytic message, the parameter that satisfies this streaming media service quality is set, by the PDP Context of initiating new technological process more, for streaming media service distributes corresponding resource.The professional cognitive method of this real time flow medium provided by the invention can improve data service efficient effectively, dynamically system resource utilization is adjusted, thereby farthest reduce the waste of interface-free resources, improve network resource utilization, ensure the streaming media playing quality.
(2) the present invention is directed to that real time flow medium is professional to provide different solutions with the multiple concurrent situation of other business,, thereby improved the adaptability of system with the quality of service of guarantee real time flow medium wherein.
(3) the present invention does not have specific demand for ability of user terminal, thereby has established user base widely for popularizing of streaming media service.
(4) the present invention carries out perception by the group data service node of network side to streaming media service, do not need other network elements to cooperate, do not have specific demand for network elements such as streaming media server, qos policy decision making function PDF, compared with prior art reduced engineering construction difficulty and cost that streaming media service is disposed.
Description of drawings
The professional aware scheme schematic diagram that Fig. 1 proposes for existing 3GPP Release 1999 standard;
The professional aware scheme schematic diagram that Fig. 2 proposes for existing 3GPP R6 consensus standard;
The schematic diagram of the perception streaming media service scheme that Fig. 3 provides for prior art;
Fig. 4 carries out the schematic flow sheet that streaming media resource distributes for the present invention by GGSN perception real time flow medium business;
Fig. 5 is the structural representation of the device for real time flow medium traffic assignments resource of the present invention.
Embodiment
Basic thought of the present invention is: in wireless communication system, when user terminal is initiated the request of real time flow medium business, group data service node captures after the user carries out message that streaming media service begins according to the stream medium service information matched rule of configuration, the initiation PDP Context upgrades, reserve corresponding resource for the real time flow medium of user's request is professional, so that the quality of service of real time flow medium business is protected.Capture the message of Client-initiated streaming media service end when group data service node after, regaining is the professional Internet resources of reserving of real time flow medium.
Among the present invention, group data service node is by the beginning and the end of perception real time flow medium business, to realize that the real time flow medium business is carried out resource reservation and resource recovery.Group data service node perception real time flow medium business comprises the perception to the following aspects:
The perception of real time flow medium type of service;
The perception of real time flow medium service rate;
Professional beginning of real time flow medium and end perception;
The perception of the professional secondary activating of real time flow medium;
The perception that the real time flow medium service concurrence is carried out.
Wherein, the perception of real time flow medium type of service and speed, and the perception of the professional beginning of real time flow medium is mainly used in network side and initiates PDP Context and upgrade, so that be the streaming media service reserved resource; The perception of real time flow medium service ending is mainly used in network side and initiates the PDP Context renewal in time to be released to the streaming media service reserved resource; The perception of real time flow medium voice and packet data concurrent service is used for the qos parameter between a plurality of Streaming Media cross-thread Streaming Medias and other business is merged and the stack management.The perception of real time flow medium secondary activating is mainly used at the terminal that possesses the Streaming Media perceptional function and does special processing, as reclaiming the resource of distributing
In order to realize the perception to the real time flow medium business, group data service node detects the service application layer message of the user terminal transmission of the Gi interface of flowing through constantly, and message is resolved, and realizes the professional perception of above-mentioned several aspects according to the information that parses.At the professional perception of above-mentioned several aspects, the present invention provides specific implementation respectively.
For the perception of real time flow medium type of service, the invention provides following several implementation method:
Method 1: (Real Time Streaming Protocol, RTSP) Gui Ding stiff end slogan judge whether this business is streaming media service by the real-time stream media protocol that parses.The fixedly IP port numbers of RTSP agreement specified flow media business is 554, and the RTP of RTSP agreement and actual transmissions Media Stream (Realtime Transport Protocol, RTP) concurrent, therefore, if the stiff end slogan that parses is 554, can assert that then the business of RTSP control is the real time flow medium business.
Method 2: judge by the service server IP address that parses whether this business is streaming media service.If the service server IP address that parses is the IP address of streaming media server, judge that then this business is the real time flow medium business.This method is applicable to the application scenarios of dedicated stream media server.
Method 3: (Uniform ResourceLocator, URL) address judges whether this business is streaming media service to the uniform resource locator by the service source that parses.If the URL address of the service source that parses is the URL address in flow-medium performance source, judge that then this business is the real time flow medium business.
Three kinds of methods that the streaming media service type is judged can choose one wantonly or the several different methods combination in any is used.
Above-mentioned three kinds of methods all need to set in advance matched rule, and group data service node is judged type of service according to matched rule.At above-mentioned three kinds of methods, matched rule can comprise following three types information:
The RTSP agreement of streaming media server controls playing Streaming Media is the IP port numbers fixedly, is generally port 554;
The IP/ mask address of dedicated stream media server;
The uniform resource locator URL address in flow-medium performance source.
Three kinds of methods that the real time flow medium type of service is judged can combination in any be used, and therefore, matched rule can comprise one or more in above-mentioned three types of information.Group data service node detects and resolves the service application layer message of Gi interface constantly, as long as one or multinomial content match listing in message information that parses and the matched rule judge that then relevant IP applied business is the real time flow medium business.
The operation quality requirement of different real time flow medium business also may be different.Most important parameter is to guarantee speed, the i.e. stream rate of program source in the qos parameter.For the perception of Streaming Media speed, can realize by following several method:
Method 1, by setting in advance static streaming media service rate matching information, be embodied as that real time flow medium is professional determines the assurance speed that is complementary with it.
As, the corresponding program source stream rate of convection media server IP address setting, the unified appointment of the flow-medium performance of playing on the streaming media server of realization to this IP address guarantees speed, and this method is applicable to the situation of all the flow-medium performance source code flow rate unanimities on the streaming media server.Table 1 has provided the example of a streaming media server IP address and program source stream rate.
Table 1:
| Streaming media server IP address | The program source stream rate |
| 129.108.27.15 | 100kbps |
| 129.108.27.18 | 64kbps |
| * | 144kbps (default configuration) |
| .... |
And for example, to the corresponding program source stream rate of URL address setting, realize the flow-medium performance of this URL address is specified assurance speed.This method is applicable to that the program source of different rates leaves on the streaming media server, but leaves the situation under the different paths in.Table 2 has provided the example of a URL address and program source stream rate.
Table 2:
| The URL address | The program source stream rate |
| http://www.cctv.com/news | 64kbps |
| http://www.cctv.com/soccer | 100kbps |
| * | 144kbps (default configuration) |
| .... |
And for example, default configuration flow-medium performance source speed is as 144kbps.When the URL address in streaming media server IP address that parses or flow-medium performance source is not set up program source stream rate with its coupling, and system does not support the parsing of the SDP rate information of RTSP agreement yet, then can make these streaming media service that the assurance speed of acquiescence is set by the default assurance speed of static configuration.
Method 2, obtain the stream rate in flow-medium performance source by the SDP information in the RTSP protocol analysis message.
Including speed in the flow-medium performance source file describes, the speed descriptor is included in the Session Description Protocol of streaming media service message, and (therefore Session Descriptor Protocol is SDP) in the information,, by parsing, just can learn the program source stream rate to SDP.This is a kind of method of dynamically obtaining flow-medium performance source code flow rate, and the most accurately with comprehensive, therefore, this method is the most reliable speed cognitive method by the sub-flow rate information of the related media of this method perception.
For the professional perception of playing beginning and finishing of real time flow medium, except that resource reservation that is used for the real time flow medium business and resource recovery, also can be used for carrying out timing by the streaming media service of reproduction time charge.
The method of the professional beginning of group data service node perception real time flow medium comprises:
Method 1, group data service node are resolved to the play command of RTSP agreement, as PLAY order, or other RTSP orders before the play command, and as SETUP or DESCRIBE order, then can be with this moment as the Streaming Media time started.
After method 2, group data service node perceive the streaming media service type, as perceive URL address, streaming media server IP address or IP port numbers etc., then can be with this moment as the Streaming Media time started.
The method of group data service node perception real time flow medium service ending comprises:
Method 1, group data service node are resolved to the finish command of RTSP agreement, as the TEARDOWN order, and then will be this moment as the streaming media playing concluding time.
If method 2 group data service nodes are not supported the protocol analysis of RTSP layer, also can roughly TCP be connected and be defined as the streaming media playing concluding time release time, because RTSP is carried on the TCP connection, the TCP connection also can discharge behind the RTSP conversation end.
For the perception that the real time flow medium service concurrence is carried out, implementation method is:
Each streaming media service all has a unique session identification (SESSION ID), and therefore, when GGSN perceives when having a plurality of Streaming Media SESSION ID to play at the same time in a PDP Context, then judging has a plurality of real time flow medium service concurrences this moment.
Be example with the real time flow medium traffic resource assignment process in the UMTS system below, the process that the present invention is carried out resource allocation by perception real time flow medium business is described in detail.
Referring to Fig. 4, for the present invention carries out the schematic flow sheet that streaming media resource distributes by GGSN perception real time flow medium business, concrete steps comprise:
1, user terminal is initiated activation process to GGSN, will initiate service request with this user terminal of notice GGSN, and GGSN is that user terminal distributes PDP Context, sets up the IP carrying;
2, user terminal is initiated application process by the RTSP agreement to streaming media server, uses at the flow-medium performance application of selected or appointment, and network side carries out authentication to user's request to be handled.
3, user terminal is initiated playing request by the RTSP agreement to streaming media server.
User terminal is by after authenticating, to the playing request of streaming media server initiation at flow-medium performance, the IP address of carrying streaming media server in the request, the URL address of flow-medium performance, the SDP information of flow-medium performance, information such as play command.The data message of this request Gi interface (being the interface of GGSN and outside shared data network PDN) of flowing through.
4, GGSN upgrades PDP Context after perceiving streaming media service, is the streaming media service reserved resource.
GGSN detects the service application layer message of the Gi interface of flowing through constantly, when GGSN detects the Gi interface service application layer message that user terminal sends is arranged, it is resolved, and mate according to predefined streaming media service matched rule.After judging the data message that this data message is the real time flow medium business according to predefined matching process and match information, GGSN also wants the speed of this flow-medium performance of perception (both can determine the stream rate in flow-medium performance source by the static match information that sets in advance, can obtain the program source stream rate by dynamic parsing SDP information again, as previously mentioned).In general, after GGSN perceives real time flow medium type of service and speed, will determine QoS undated parameter in the PDP Context according to the speed that perceives, initiate PDP and go up style of writing and upgrade, be that streaming media service is reserved the corresponding bandwidth that guarantees.
When the flow-medium performance needs of perception were charged according to time, GGSN also wanted the broadcast of this real time flow medium business of perception to begin and the concluding time, so that accurately calculate reproduction time.
Professional and other non-real-time services are (as Interactive when real time flow medium, the Background business) concurrent, and during a shared PDP Context, then GGSN is updated to the qos parameter in the PDP Context to guarantee the required qos parameter of real time flow medium quality of service, that is: be Streaming with Traffic Class parameter value, will guarantee that the speed value is the assurance speed of real time flow medium business.
Real time business when streaming media service and non-Streaming Media type, as session service (Conversational) when concurrent, then GGSN is Conversational with the Traffic class value in the qos parameter, the value that guarantees speed can adopt algorithms of different to obtain, as: speed the highest in (1) line taking journey is for guaranteeing speed; (2) a plurality of business are guaranteed that speed superposes, but will guarantee that the speed after the professional stack can not surpass the assurance speed that the user contracts.
When the professional threads of a plurality of real time flow mediums on the user terminal during a concurrent and shared PDP Context, then GGSN is Streaming with the Traffic class value in the qos parameter, the value that guarantees speed can adopt algorithms of different to obtain, as: (1) gets the assurance speed of the Streaming Media thread of initiating at first; (2) the highest assurance speed in the line taking journey; (3) a plurality of Streaming Media threads are guaranteed that speed superposes, but will guarantee that the speed after the professional stack can not surpass the assurance speed that the user contracts.
In the real-time media business was carried out, if user terminal, SGSN or other entity are initiated the PDP Context updating message, then GGSN upgraded according to the normal protocol flow process.At this moment, the professional corresponding qos parameter of original real time flow medium may change.
5, GGSN initiates PDP Context update request flow process.
GGSN initiates the update request of PDP Context to SGSN, PDP Context after SGSN will upgrade sends to RAN through transmitting layer by layer, make RAN upgrade the professional corresponding qos parameter of real time flow medium, reserve the corresponding bandwidth that guarantees for real time flow medium is professional according to the PDP Context after upgrading.
Flow-medium performance guarantees that according to reserving for it bandwidth sends to user terminal from streaming media server.
6, user terminal initiates to finish (TEARDOWN) request by the RTSP agreement, and request finishes the broadcast of flow-medium performance.Comprise the finish command in this request message, this data message Gi interface of flowing through.
7, after the GGSN perception real time flow medium service ending, renewal PDP goes up the style of writing content, regains to be the streaming media service reserved resource.
GGSN detects the service application layer message of the Gi interface of flowing through constantly, when GGSN detects the Gi interface service application layer message that user terminal sends is arranged, it is resolved, and carry out information matches according to predefined streaming media service matched rule.After judging the data message that this data message is the real time flow medium business according to predefined matching process and match information, GGSN also will determine whether comprise the RTSP protocol command that finishes streaming media playing in this data message according to analysis result.Comprise the finish command of RTSP agreement in judging this data message after, GGSN upgrades PDP Context, and it is updated to the QoS configuration of system default, or its QoS that reverts to before streaming media service is carried out is disposed.The qos parameter that recovers can not surpass the signatory qos parameter of user.
For streaming media service according to time-based charging, after GGSN parses the finish command, also to stop the timer timing, so that obtain the time of implementation of this real time flow medium business, charge.
Under the situation that a plurality of real time flow medium service concurrences execution and a shared PDP Context are arranged, when wherein certain Streaming Media thread finishes, the GGSN basis is that the algorithm that is adopted when determining assurance speed in these streaming media service reserved resource processes takes corresponding mode to reclaim resource, as:
(1) when GGSN with the stack of the speed of a plurality of Streaming Media threads during as the assurance speed of current PDP Context, at this moment, the resource that the recoverable part of GGSN takies, as, regain the resource that Streaming Media thread that this end plays is taken separately, specific practice is that the speed that guarantees that current a plurality of Streaming Media threads use is deducted the speed of this thread that has finished, as the assurance speed of current PDP Context.
(2) when GGSN gets speed the highest in a plurality of Streaming Media threads as the assurance speed of current PDP Context, suppose to have N the shared current PDP Context of Streaming Media thread, at this moment, GGSN gets the assurance speed of a maximum in remaining also unclosed N-1 thread, as the assurance speed of current PDP Context.
When (3) speed of getting at first the Streaming Media thread of initiating as GGSN was as the assurance speed of current PDP Context, at this moment, as long as current have the Streaming Media thread also to finish to play, the speed of current PDP Context can remain unchanged.
After last streaming media service process finished, GGSN initiated the recovery process at all streaming media resources.
8, GGSN initiates PDP Context update request flow process.
GGSN initiates the update request of PDP Context to SGSN, PDP Context after SGSN will upgrade sends to RAN through transmitting layer by layer, make the qos parameter of RAN, the professional shared resource of real time flow medium is discharged according to the corresponding streaming media service of the PDP Context renewal after upgrading.
Certain user's terminal is when starting the real time flow medium business, can trigger the PDP secondary activating automatically, generate a new PDP Context (i.e. second PDP Context), so that be specifically designed to the broadcast of flow-medium performance, and the perception of GGSN and PDP Context upgrade at first PDP Context (being former PDP Context), in order to restrain the invalid renewal of GGSN, the invention provides following two kinds of methods at first PDP Context:
Method 1, if GGSN is professional and for after it initiates PDP Context renewal at the perception real time flow medium, find again user terminal pass through secondary activating newly-built PDP Context with the stream media bearing business (by to gn interface, it is the detection of signaling plane between SGSN and the GGSN, judge that whether user terminal is by the newly-built PDP Context of secondary activating), at this moment, GGSN is to the update request of SGSN initiation at first PDP Context, upgrading qos parameter is the preceding parameter of Streaming Media perception, or the default qos parameter of system's setting.
Method 2, when GGSN perceives streaming media service, do not initiate PDP Context and upgrade, but the opening timing device.In setting-up time,, then restrain to the update request of SGSN initiation, and stop timer at first PDP Context if GGSN receives the PDP secondary activating (setting up second PDP Context of user's face) that user terminal is initiatively initiated.After timer stopped timing, if GGSN recovers operate as normal timer expiry, showed that then user terminal do not initiate the PDP secondary activating, and at this moment, GGSN initiates the PDP Context update request so that be real time flow medium business reserved resource to SGSN.
Above-mentioned flow process is except that being applicable to the UMTS network, also can be applicable to GPRS (General Packet Radio Service equally, GPRS) network and code division multiple access (Code Division MultipleAddressing, CDMA) network, or the cordless communication network that other can the stream media bearing business.In GPRS network, by GGSN streaming media service is carried out perception and resource allocation, in cdma network, (Packet Data Service Node PDSN) carries out the perception resource allocation to streaming media service by group data service node.
Based on said method, the present invention also provides a kind of device of real time flow medium traffic assignments resource that is, can dynamically distribute corresponding resource for streaming media service by the real time flow medium business of perception user terminal initiation.
Referring to Fig. 5, for of the present invention be the structural representation of the device of real time flow medium traffic assignments resource, this device specifically comprises: detection/parsing module, matching judgment module, resource management module.
The service application layer message that detection/parsing module detects in real time and resolution flow sends through the user terminal of Gi interface, and the message information that parses sent to the matching judgment module.When the matching judgment module has streaming media service to begin according to the message information judgement that parses, send the instruction of reserved resource to resource management module; Judge when the real time flow medium service ending is arranged, send the instruction of regaining reserved resource to resource management module.Resource management module is initiated corresponding PDP Context according to instruction and is upgraded, and reserves corresponding resource for real time flow medium is professional or regains reserved resource.
The matching judgment module comprises professional matched sub-block, professional beginning/end judgement submodule and rate-matched submodule.
Professional matched sub-block is complementary message information that parses and the passive flow media business match information of presetting (as streaming media server IP address or flow-medium performance origin url address), judge whether streaming media service message of the message capture, if then start professional beginning/end and judge submodule and rate-matched submodule.
Professional beginning/ends judged that submodule is judged to comprise in the message information and is provided with or during the order of playing stream media program (order as PLAY order, the SETUP of RTSP agreement etc.), to the instruction of resource management module transmission reserved resource; Judge when comprising the order (as the TEARDOWN order of RTSP agreement) that finishes flow-medium performance in the message information, send the instruction of regaining reserved resource to resource management module.
The rate-matched submodule obtains the speed that is complementary according to default streaming media service rate matching information (as streaming media server IP address and the flow-medium performance stream rate corresponding with it), and it is set to the assurance speed of this streaming media service; The rate information that will parse from message information (as the SDP information the message) maybe is set to the assurance speed of this streaming media service.The rate information that guarantees that the rate-matched submodule will set sends to resource management module.
Resource management module is received the resource reservation instruction or/and behind the assurance rate information of described setting, guarantee the qos parameter of speed renewal PDP Context according to this, reserves for real time flow medium is professional and guarantees bandwidth; After receiving the instruction of regaining reserved resource, the current speed that guarantees before speed is set to the speed of system default or streaming media service and begins is upgraded the parameter of PDP Context, and regaining is the professional assurance bandwidth of reserving of real time flow medium.
The matching judgment module also comprises a concurrent judgement/processing sub, wherein is preset with the algorithm that voice and packet data concurrent service guarantees speed is set.When concurrent judgement/processing sub is judged the real time flow medium business with other service concurrences and a shared PDP Context, be that streaming media service is provided with assurance speed according to default algorithm, and the rate information that guarantees that will be provided with send to resource management module.When concurrent judgement/processing sub is judged service ending in the real time flow medium business of a plurality of concurrent and shared PDP Contexts, for the remaining streaming media service that does not also have to finish assurance speed is set according to default algorithm, upgrade current speed, and the rate information after will upgrading sends to resource management module.After concurrent judgement/processing sub judges that an a plurality of concurrent and real time flow medium business shared PDP Context all finish, the speed or the streaming media service that current speed are updated to system default begin preceding speed, and the rate information after will upgrading sends to described resource management module.Resource management module is initiated PDP Context and is upgraded according to the qos parameter of the assurance speed renewal PDP Context that is provided with.
The matching judgment module also comprises a PDP Context detection/processing sub.PDP Context detection/processing sub detects user terminal when setting up second user's face PDP Context (being new PDP Context) of stream media bearing business by secondary activating, send the instruction of restraining resource reservation to resource management module, restrain first user's face PDP Context (being former PDP Context) of stream media bearing business is initiated to upgrade; Or send the resource recovery command to resource management module, be retracted in first user's face PDP Context of stream media bearing business and be this streaming media service reserved resource.
In sum, the present invention is by being detected and resolved the message of Gi interface by the group data service node of network side, judge whether user terminal initiates the relevant business of real time flow medium, and according to the rate information in static match information that sets in advance or the dynamic analytic message, determine to satisfy the parameter of this streaming media service quality, by the PDP Context of initiating new technological process more, for streaming media service distributes corresponding resource.The professional cognitive method of this real time flow medium provided by the invention can be adjusted system resource utilization dynamically, thereby farthest reduces the waste of interface-free resources, improves network resource utilization, ensures the streaming media playing quality.The present invention also provides different solutions at real time flow medium is professional with the multiple concurrent situation of other business, with the play quality of guarantee real time flow medium wherein, thereby has improved the adaptability of system.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (19)
1. one kind is the method for real time flow medium traffic assignments resource, it is characterized in that, comprises step:
Group data service node is caught the streaming media service message that user terminal sends;
Judge that by resolving described streaming media service message the professional beginning of real time flow medium is arranged, initiate the data pack protocol PDP Context and upgrade, be the professional reserved resource of this real time flow medium; Judging has the real time flow medium service ending, initiates PDP Context and upgrades, and regains to be the professional reserved resource of this real time flow medium.
2. the method for claim 1 is characterized in that, described group data service node is caught the streaming media service message that user terminal sends, and comprising:
The service application layer message that user terminal sends is caught and resolved to group data service node by detecting the Gi interface;
Be complementary by message information that will parse and the streaming media service match information of presetting, judge whether the message that captures is the streaming media service message.
3. method as claimed in claim 2 is characterized in that, described default streaming media service match information is a flow-medium performance source information.
4. method as claimed in claim 3, it is characterized in that, described flow-medium performance source information is RTSP agreement stiff end slogan, the streaming media server IP address of streaming media server controls playing flow-medium performance, or the uniform resource locator URL address in flow-medium performance source, or the combination in any of above information.
5. the method for claim 1 is characterized in that, when group data service node parsed the order that comprises setting or playing stream media program in the described streaming media service message, judging had the professional beginning of real time flow medium; When comprising the order that finishes flow-medium performance in parsing described streaming media service message, judging has the real time flow medium service ending.
6. the method for claim 1, it is characterized in that, after group data service node receives that streaming media service message and judgement have the professional beginning of real time flow medium, the speed of streaming media service is set, upgrade the PDP Context parameter, be the streaming media service bandwidth reserved.
7. method as claimed in claim 6, it is characterized in that, group data service node parses rate information from described streaming media service message, or obtains the speed that is complementary with described streaming media service according to default streaming media service rate matching information, and the speed of streaming media service is set.
8. the method for claim 1 is characterized in that, when real time flow medium business and other service concurrences and a shared PDP Context, it is the corresponding resource of the professional reservation of described real time flow medium that group data service node adopts default algorithm.
9. method as claimed in claim 8, it is characterized in that, when concurrent described other business were the real time flow medium business, then described default algorithm comprised that the speed of the business of choosing speed maximum in the voice and packet data concurrent service or first initiation is set to the professional common speed of concurrent real time flow medium; Or the speed of voice and packet data concurrent service superposeed, the speed after the stack is set to the professional common speed of concurrent real time flow medium, upgrades the quality of service qos parameter in the PDP Context;
When concurrent described other business were the real time business of non-Streaming Media type, then described default algorithm comprises chose the speed that speed maximum in the voice and packet data concurrent service is set to described real time flow medium business; Or the speed of voice and packet data concurrent service superposeed, the speed after the stack is set to the speed of described real time flow medium business, upgrades the qos parameter in the PDP Context;
When concurrent described other business are non-real-time service, then choose the speed of real time flow medium business, upgrade the qos parameter in the PDP Context.
10. the method for claim 1, it is characterized in that, after a service ending in the real time flow medium business of a plurality of concurrent and shared PDP Contexts, group data service node is according to regaining the part resource of reservation for the mode of a plurality of concurrent professional reserved resources of real time flow medium;
After a plurality of concurrent real time flow medium business all finished, group data service node was regained all resources of reserving.
11. method as claimed in claim 10, it is characterized in that, if group data service node adopts the mode of stack speed that the speed of real time flow medium business is set, then after one of them service ending, from the speed of current stack, deduct this professional speed, upgrade the qos parameter in the PDP Context;
If group data service node is chosen the speed that flank speed is provided with the real time flow medium business, then after one of them service ending, choose the flank speed in the also unclosed streaming media service, upgrade the qos parameter in the PDP Context.
12. the method for claim 1 is characterized in that, described group data service node is regained and is the professional reserved resource of described real time flow medium, realizes by following steps:
Qos parameter in the PDP Context is updated to system default value; Or
Qos parameter in the PDP Context is reverted to described real time flow medium service resources upgrade preceding numerical value.
13. the method for claim 1, it is characterized in that, after the group data service node judgement has the professional beginning of real time flow medium, in setting-up time, detect user terminal and whether initiate to set up a new PDP Context at described real time flow medium business, if the former PDP Context of then restraining carrying described real time flow medium business upgrades; Otherwise, initiate renewal to described former PDP Context.
14. the method for claim 1, it is characterized in that, after group data service node initiation PDP Context is updated to the professional reserved resource of real time flow medium, when detecting user terminal again and initiating to set up a new PDP Context, regain it and be this real time flow medium business reserved resource in former PDP Context at described real time flow medium is professional.
15. one kind is the device of real time flow medium traffic assignments resource, it is characterized in that, also comprises detection/parsing module, matching judgment module and resource management module;
Described detection/parsing module detects message and the parsing that user terminal sends, and the message information that parses is sent to described matching judgment module;
When described matching judgment module has streaming media service to begin according to the message information judgement that parses, send the instruction of reserved resource to described resource management module; Judge when the real time flow medium service ending is arranged, send the instruction of regaining reserved resource to described resource management module;
Described resource management module is initiated corresponding PDP Context according to instruction and is upgraded, and is professional reserved resource of real time flow medium or withdrawal reserved resource.
16. device as claimed in claim 15 is characterized in that, described detection/parsing module detects the Gi interface, catches and resolve the service application layer message that user terminal sends.
17. device as claimed in claim 15 is characterized in that, described matching judgment module comprises professional matched sub-block, professional beginning/end judgement submodule and rate-matched submodule;
Described professional matched sub-block is complementary message information that parses and the streaming media service match information of presetting, judge whether streaming media service message of the message capture, if then start described professional beginning/end and judge submodule and described rate-matched submodule;
Described professional beginning/end is judged when submodule is judged the order that comprises setting or playing stream media program in the message information, to the instruction of described resource management module transmission reserved resource; Judge and send the instruction of regaining reserved resource to described resource management module when comprising the order that finishes flow-medium performance in the message information;
The speed that streaming media service rate matching information setting that described rate-matched submodule basis is default and real time flow medium business are complementary, or the speed of streaming media service is set, and the rate information that is provided with is sent to described resource management module according to the rate information that from the streaming media service message, parses;
Described resource management module is received the resource reservation instruction or/and behind the rate information of described setting, according to the qos parameter of the speed renewal PDP Context that is provided with, for the professional reservation of real time flow medium guarantees bandwidth; After receiving the instruction of regaining reserved resource, speed or streaming media service that present rate is set to system default begin preceding speed, upgrade the parameter of PDP Context, and regaining is the professional assurance bandwidth of reserving of real time flow medium.
18. device as claimed in claim 17 is characterized in that, described matching judgment module also comprises a concurrent judgement/processing sub;
When described concurrent judgement/processing sub is judged the real time flow medium business with other service concurrences and a shared PDP Context, be that streaming media service is provided with speed according to default algorithm, and the rate information that is provided with is sent to described resource management module;
When described concurrent judgement/processing sub is judged service ending in the real time flow medium business of a plurality of concurrent and shared PDP Contexts, according to default algorithm is that also unclosed streaming media service is provided with speed, and the rate information that is provided with is sent to described resource management module;
After described concurrent judgement/processing sub judges that an a plurality of concurrent and real time flow medium business shared PDP Context all finish, speed or streaming media service that current speed is set to system default begin preceding speed, and the rate information that is provided with is sent to described resource management module;
Described resource management module is initiated PDP Context and is upgraded according to the qos parameter of the speed renewal PDP Context that is provided with.
19. device as claimed in claim 17 is characterized in that, described matching judgment module also comprises PDP Context detection/processing sub;
Described PDP Context detection/processing sub detects user terminal when initiating to set up a new PDP Context at described streaming media service, send the instruction of restraining resource reservation to described resource management module, restrain the former PDP Context that carries described streaming media service is initiated to upgrade; Or
Send the resource recovery command to described resource management module, being retracted in the former PDP Context that carries described streaming media service is this streaming media service reserved resource.
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| CNB2006101038317A CN100461766C (en) | 2006-08-02 | 2006-08-02 | Method and device for distributing resource of real-time flow-media business |
| PCT/CN2007/002327 WO2008017249A1 (en) | 2006-08-02 | 2007-08-02 | A method and apparatus for streaming media service resource management |
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| CN100461766C (en) * | 2006-08-02 | 2009-02-11 | 华为技术有限公司 | Method and device for distributing resource of real-time flow-media business |
| CN101325780B (en) | 2007-06-15 | 2010-07-07 | 华为技术有限公司 | Method and system for implementing tactics control, entity for executing tactics and charging |
| CN101772010B (en) * | 2008-12-30 | 2012-09-05 | 联芯科技有限公司 | Abnormal processing method for terminal and network for packet switching service district refreshment |
| CN102904859B (en) * | 2011-07-26 | 2017-08-08 | 中兴通讯股份有限公司 | Ensure the method and system of streaming media service service quality |
| CN102523296B (en) * | 2011-12-21 | 2014-11-05 | 华为技术有限公司 | Method, device and system for optimizing wireless webpage browsing resources |
| US10700944B2 (en) | 2012-06-07 | 2020-06-30 | Wormhole Labs, Inc. | Sensor data aggregation system |
| US10489389B2 (en) | 2012-06-07 | 2019-11-26 | Wormhole Labs, Inc. | Experience analytic objects, systems and methods |
| US10649613B2 (en) | 2012-06-07 | 2020-05-12 | Wormhole Labs, Inc. | Remote experience interfaces, systems and methods |
| CN104754554B (en) | 2013-12-27 | 2019-04-05 | 华为技术有限公司 | A kind of methods, devices and systems obtaining the instruction of media business parameter |
| CN107154901B (en) * | 2016-03-03 | 2021-07-06 | 中兴通讯股份有限公司 | Data transmission control method and system, and data transmission method and device |
| CN114489572B (en) * | 2020-11-13 | 2023-12-29 | 华为技术有限公司 | Service demand adjustment method and related equipment |
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