CN102546713B - Method, system and equipment for distributing distributed contents under roaming scenarios - Google Patents
Method, system and equipment for distributing distributed contents under roaming scenarios Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, system and equipment for distributing distributed contents under roaming scenarios. The method comprises the following steps: user equipment transmits a peer list request to network side equipment in a home domain of the user equipment; the network side equipment in the home domain acquires a peer list from network side equipment in the current visit domain of the user equipment according to the peer list request and forwards the acquired peer list to the user equipment; and the user equipment acquires contents from content source equipment of the current visit domain. According to the method, the system and the equipment disclosed by the invention, the inter-domain traffic can be reduced.
Description
Technical field
The present invention relates to communication technical field, relate in particular to distributed content distribution method, system and equipment under roaming scence.
Background technology
Distributed content dissemination system refers to that employing distributed computing technology provides content distributing service, realizes sharing of resource and information by the direct interaction between content memory node in system, and system architecture is referring to Fig. 1.
Fig. 1 is the Organization Chart of current distributed content dissemination system.
Distributed content dissemination system, on the basis of the unified administrative class server in the existing whole nation, is divided operational area, for example, national operational area is divided into each provincial and national level.
Referring to Fig. 1, administrative class server comprises the unified certification server (i.e. the unified 3A server in the whole nation) of location-server for judging client present position and managing user information; In addition, in individual domain, dispose Maintenance Point and add the comprehensive server exiting, the content source server of programs stored resource, Edge Server group content distributed and that provide data flow to serve is provided, store the node index server of all channel indexes in each region, and portal site server etc.
Fig. 2 is the schematic flow sheet that user asks video resource in the dissemination system of distributed content shown in Fig. 1.
Wherein, A province and B economize and represent respectively different regions.
As shown in Figure 2, specific works flow process is as follows:
1) click certain entry when A economizes (or region) contracted user UE1 at the portal site server place of A province, initiate to watch the request of certain channel.
2) A province portal site server returns to the identification information of this channel of UE1.
3) UE1 economizes comprehensive server to A and sends channel request information, comprises channel identication.
4) A province comprehensive server is resolved channel identication, inquires about this province and whether preserves this channel, if preserve, notifies UE1 contact A to economize the peer node list (Peer List) of node index server acquisition A province.
5) UE1 economizes by Peer List contact A channel resource storage person UE2 and Edge Server 2, thus downloading data resource is watched video content.
In above-mentioned flow process, user need to be from system when foradownloaded video resource, no matter whether roams, and all downloads Peer List from the node index server of ownership place, and with the ownership place node downloading data resource that connects.
Therefore, economize when (or region) when UE1 roams into B, user or the Edge Server still economized in Peer List with A connect, therefrom foradownloaded video content.Economize media flow between the net between B province thereby increased A, take backbone bandwidth, and increase the buffering time delay while watching video, cause user to experience not good.
Visible, there is following problem in existing content distribution method and system:
Although current distributed content dissemination system adopts by territory deployment scheme, make user can obtain from this domain node index server the Peer List in this territory, and connect with the node in Peer List, thereby reduce flow between territory, realize to a certain extent flow localized.But just because of having adopted by territory deployment scheme, in the time that roamer uses content class service, still according to home domain controlling mechanism, obtain the Peer List of home domain from home domain, and connect with home domain node, thereby need cross-domain transmission of media data, increase the buffering time delay while watching video.
In the time that the roamer's amount in network reaches userbase, backbone bandwidth will be taken in a large number by media data, thereby have influence on home domain video resource memory node to not roamer's request processing, also affected to a certain extent not roamer's viewing experience.
Summary of the invention
In view of this, the invention provides distributed content distribution method and system under a kind of roaming scence, to reduce flow between territory.
Technical scheme of the present invention is specifically achieved in that
A distributed content distribution method under roaming scence, the method comprises:
Subscriber equipment sends peer node list (Peer List) request to its home domain network equipment, home domain network equipment obtains Peer List according to this Peer List request from the current visit domain network side equipment of this subscriber equipment, and the Peer List obtaining is transmitted to this subscriber equipment;
This subscriber equipment obtains content according to this Peer List from the content source facility in current visit territory.
Distributed content dissemination system under a kind of roaming scence, this system comprises subscriber equipment, first network side apparatus and second network side apparatus, first network side apparatus is the home domain network equipment of described subscriber equipment, and second network side apparatus is the visit domain network side equipment of described subscriber equipment;
Described subscriber equipment, for send Peer List request to first network side apparatus, the Peer List returning according to first network side apparatus, the content source facility from this Peer List is obtained content;
Described first network side apparatus, for locate the visit domain network side equipment of this subscriber equipment according to the Peer List request of described subscriber equipment, to described second network side apparatus, Peer List request occurs according to positioning result, the Peer List that this second network side apparatus is returned is transmitted to this subscriber equipment;
Described second network side apparatus, for according to the Peer List request of described first network side apparatus, returns to Peer List to first network side apparatus.
A kind of network equipment, this network equipment comprises the first transceiver module, locating module and the second transceiver module;
Described the first transceiver module, the Peer List request sending for receiving subscriber equipment, this Peer List carries the current location information of subscriber equipment in asking, and the Peer List that the second transceiver module is received issues this subscriber equipment;
Described locating module, asks for resolving described Peer List the current location information carrying, according to the visit domain network side equipment of this current location Information locating subscriber equipment;
Described the second transceiver module, for according to the positioning result of locating module, sends Peer List request to the visit domain network side equipment of this subscriber equipment, receives the Peer List that this visit domain network side equipment returns.
A kind of subscriber equipment, this subscriber equipment comprises the first acquisition module and the second acquisition module;
Described the first acquisition module, for send the Peer List request that carries this subscriber equipment current location information to home domain network equipment, receive the Peer List that this home domain network equipment returns, this Peer List comprises the content source facility information in the current visit of this subscriber equipment territory;
Described the second acquisition module, for the Peer List returning according to home domain network equipment, the content source facility from the current visit of this subscriber equipment territory is obtained content.
As seen from the above technical solution, in the present invention, when subscriber equipment is in roaming scence lower time, subscriber equipment sends after Peer List request to home domain network equipment, home domain network equipment obtains Peer List from the current visit domain network side equipment of this user, the Peer List obtaining is returned to subscriber equipment, thereby make subscriber equipment in the content source facility from visit territory, to obtain content according to this Peer List, thereby avoid subscriber equipment under roaming scence still from the content source facility of home domain, to obtain content, and then reduce flow between territory.
Brief description of the drawings
Fig. 1 is the Organization Chart of current distributed content dissemination system.
Fig. 2 is the schematic flow sheet that user asks video resource in the dissemination system of distributed content shown in Fig. 1.
Fig. 3 is content distribution method flow chart provided by the invention.
Fig. 4 is the schematic diagram of Peer List shared mechanism under roaming scence.
Fig. 5 is that user terminal obtains the successful flow chart of Peer List under roaming scence.
Fig. 6 is the flow chart that user terminal obtains Peer List failure under roaming scence.
Fig. 7 is content delivering system composition schematic diagram provided by the invention.
Fig. 8 is network equipment structure chart provided by the invention.
Fig. 9 is user device architecture figure provided by the invention.
Embodiment
For the problems referred to above, the present invention is ensureing, on the basis of former distributed content distribution service home domain controlling mechanism, by improving the Peer List request mechanism under roamer's scene, to eliminate media flow between former territory of bringing by territory request mechanism.
The present invention introduces the Peer List shared mechanism under roaming scence in IP multimedia system (IMS) distributed content delivery system.Particularly, in the time that user roams into visit territory from home domain, roamer is still to home domain Tracker application server (Tracker-AS) request Peer List, home domain Tracker-AS receives after request, just ask Peer List to user's visit territory Tracker-AS, and return to user.After this, user can obtain the address of other UE or the content server (CS) of visiting territory from this Peer List, and connects and obtain content resource with the visit UE in territory or CS, thereby saves flow between the territory of medium surface.
In addition, the Tracker-AS in visit territory can collect the charges to the Tracker-AS of home domain based on returning to number of nodes in user's Peer List.
Fig. 3 is content distribution method flow chart provided by the invention.
As shown in Figure 3, the method comprises:
Step 301, subscriber equipment sends Peer List request to its home domain network equipment.
Step 302, home domain network equipment obtains Peer List according to this Peer List request from the current visit domain network side equipment of this subscriber equipment.
Step 303, the Peer List obtaining is transmitted to this subscriber equipment by home domain network equipment.
Step 304, this subscriber equipment obtains content according to this Peer List from the content source facility in current visit territory.
In IMS distributed content dissemination system, comprise following functional entity:
Tracker application server (Tracker-AS): finishing service registration and certification, be responsible for storage and inquiry channel information, realize Peer List inquiry and share etc.
Channel selection server (Portal): function mainly comprises that channel list presents, channel list upgrades, individualized content pushes, the customized operation of service package etc.
Content information distribution platform (CIPP): CIPP is responsible for receiving from outside channel registration request and registering, and the backward Tracker-AS that succeeds in registration notices channel and relevant out of Memory.CIPP has stored the routing iinformation of all Tracker-AS.
Source server (Source Server, SS): source server SS provides streaming medium content primary data, is responsible for the functions such as content coding, media format conversion.
Content server (Content Server, CS): function mainly comprises that streaming medium content obtains and processes (section etc.), buffer management, resource bitmap information interaction and management, streaming medium content deletion and the function such as reports.
Fig. 4 is the schematic diagram of Peer List shared mechanism under roaming scence.
As shown in Figure 4, economize if A province contracted user UE1 roams into visit territory B by home domain A province, when it clicks after certain channel list on Portal, Portal returns to UE1 the Tracker-AS1 address that home domain A economizes; After this UE1 sends Peer List request to Tracker-AS1, in order to save bandwidth between territory, Tracker-AS1 obtains the Tracker-AS2 address of visited place, user place to CIPP, and the Tracker-AS2 initiatively economizing to visit territory B sends Peer List request, and the B that Tracker-AS2 is returned province Peer List returns to UE1, thereby UE3, CS3 and CS4 that UE2 can economize with visit territory B connect, foradownloaded video burst.Finally, visited place Tracker-AS2 can collect the charges to ownership place Tracker-AS1 according to returning to number of nodes in user's Peer List.
Below each flow process of content distribution method provided by the invention is introduced.
At user terminal, under roaming condition, user still obtains service from home domain Tracker-AS, and by sharing channel information between home domain and visit territory Tracker-AS, obtains the node listing of visited place, then foradownloaded video content therefrom.
Fig. 5 is that user terminal obtains the successful flow chart of Peer List under roaming scence.
In Fig. 5, Home Tracker-AS is the Tracker-AS in user attaching territory, and Visited Tracker-AS is the visit territory Tracker-AS that user roams into.
As shown in Figure 5, under roaming scence, the successful flow process of content issue request specifically describes as follows:
Tracker-AS positioning flow comprises:
1) user is video interested to certain, clicks this video resource entry in channel list, and UE sends Tracker-AS Location Request to Portal.
2) Portal receives after Tracker-AS Location Request, returns to Tracker-AS address to UE.
Service log-on flow process comprises:
3)-4) UE obtains behind Tracker-AS address from Portal, sends channel authentication request through IMS Core to home domain Tracker-AS.
5)-6) home domain Tracker-AS authenticates the authority of watching of this channel of user, if this user has the authority of watching channel, and home domain Tracker-AS return authentication success response, and user is added in the Peer List that this channel is corresponding.
7)-8) UE receives after authentication success response, returns to ACK.
The flow process of request Peer List comprises:
9)-10) UE, by IMS Core access home domain Tracker-AS, obtains the Peer List that has this video resource.
11) home domain Tracker-AS receives after Peer List request, forwards this ask to obtain visit territory Peer List to visit territory Tracker-AS.
12) visit territory Tracker-AS receives after Peer List request, and PeerList corresponding to video that user asks returned to home domain Tracker-AS.
13)-14) home domain Tracker-AS returns to Peer List through IMS Core to UE.
Again ask the flow process of Peer List to comprise:
15)-20) when burst downloading rate is too low, video resource transmit leg is stored in UE and video resource transmit leg data transmission fails or Peer List video slicing be cannot form complete film source time, be that performance that UE obtains content is not while meeting predetermined condition, UE again sends request and obtains Peer List to home domain Tracker-AS, connect to again choose node from Peer List, obtain video slicing; The request of receiving is transmitted to visit territory Tracker-AS by home domain Tracker-AS, and from visit, territory Tracker-AS obtains current up-to-date Peer List, and returns to UE.
Fig. 6 is the flow chart that user terminal obtains Peer List failure under roaming scence.
When Tracker-AS is during to the channel authentification failure of UE, Tracker-AS need to return to 4XX and inform that user can not watch this film source video.
As shown in Figure 6, under roaming scence, content issue request failure procedures specifically describes as follows:
Tracker-AS positioning flow comprises:
1) user is video interested to certain, clicks this video resource entry in channel list, and UE sends Tracker-AS Location Request to Portal.
2) Portal receives after Tracker-AS Location Request, returns to Tracker-AS address to UE.
Service log-on flow process comprises:
3)-4) UE obtains behind Tracker-AS address from Portal, sends channel authentication request through IMS Core to Tracker-AS.
5)-6) Tracker-AS authenticates the authority of watching of this channel of user, in the time finding that user causes not watching authority due to factors such as the relevant film source of un-customized or arrearages, to UE return authentication failure response.
7)-8) UE receives after authentication failure response, returns to ACK.
The foregoing distribution method according to the present invention, also provides corresponding content delivering system, specifically refers to Fig. 7.
Fig. 7 is content delivering system composition schematic diagram provided by the invention.
As shown in Figure 7, this system comprises subscriber equipment 701, first network side apparatus 702 and second network side apparatus 703, first network side apparatus 702 is home domain network equipments of subscriber equipment 701, and second network side apparatus 703 is visit domain network side equipments of subscriber equipment 701.
Subscriber equipment 701, for send Peer List request to first network side apparatus 702, the Peer List returning according to first network side apparatus 702, the content source facility from this Peer List is obtained content.
First network side apparatus 702, for ask the visit domain network side equipment of locating user devices 701 according to the Peer List of subscriber equipment 701, to second network side apparatus 703, Peer List request occurs according to positioning result, the Peer List that second network side apparatus 703 is returned is transmitted to subscriber equipment 701.
Second network side apparatus 703, for according to the Peer List request of first network side apparatus 702, returns to Peer List to first network side apparatus 702.
This system can also comprise accounting module 704.
Accounting module 704, the number of nodes comprising for the Peer List returning to first network side apparatus 702 according to second network side apparatus 703 carries out charging.
Described accounting module 704 can be arranged in second network side apparatus 703, can be also and second network side apparatus 703 and first network side apparatus 702 independent equipment independently mutually.
According to content distribution method provided by the invention and system, need to improve existing Tracker-AS and UE, wherein:
In order to make full use of above-mentioned Peer List sharing concept, it is as follows that the present invention proposes demand to the function of Tracker-AS:
One, Tracker-AS need to be known by certain mode position and the address information of all Tracker-AS in current network, as position and address that Tracker-AS records every other Tracker-AS, the present invention does not limit Tracker-AS and knows the position of all Tracker-AS in current network and the concrete mode of address information.
Its two, the region at the current place of Peer List requirement analysis UE that Tracker-AS sends according to UE, and Peer List request is transmitted to the Tracker-AS in territory, UE place.
In order to make full use of above-mentioned Peer List sharing concept, it is as follows that the present invention proposes demand to the function of UE:
UE needs to carry the positional information of oneself in Peer List request message, so that Tracker-AS is known the region at the current place of user.
The demand function of Tracker-AS and UE being proposed according to the present invention, the invention provides corresponding network equipment and subscriber equipment, specifically refers to Fig. 8-9.
Fig. 8 is network equipment structure chart provided by the invention.
As shown in Figure 8, this network equipment comprises the first transceiver module 801, locating module 802 and the second transceiver module 803.
The first transceiver module 801, the Peer List request sending for receiving subscriber equipment, the Peer List that the second transceiver module 803 is received issues this subscriber equipment.
Locating module 802, for asking the visit domain network side equipment of locating user devices according to described Peer List;
The second transceiver module 803, for according to the positioning result of locating module 802, sends Peer List request to the visit domain network side equipment of this subscriber equipment, receives the Peer List that this visit domain network side equipment returns.
In described Peer List request, can carry the current location information of subscriber equipment, correspondingly, locating module 802 asks for resolving described Peer List the current location information carrying, according to the visit domain network side equipment of this current location Information locating subscriber equipment.
Described in Fig. 8, network equipment can also comprise memory module.
Described memory module, for storing position and the address information of other network equipments.
Correspondingly, locating module 802, for position and the address information of other network equipments of storing in the subscriber equipment current location information of asking to carry according to Peer List and described memory module, is determined the visit domain network side equipment address that this subscriber equipment is current.
Fig. 9 is user device architecture figure provided by the invention.
As shown in Figure 9, this subscriber equipment comprises the first acquisition module 901 and the second acquisition module 902.
The first acquisition module 901, for send the Peer List request that carries this subscriber equipment current location information to home domain network equipment, receive the Peer List that this home domain network equipment returns, this Peer List comprises the content source facility information in the current visit of this subscriber equipment territory.
The second acquisition module 902, for the Peer List returning according to home domain network equipment, the content source facility from the current visit of this subscriber equipment territory is obtained content.
In IMS distributed content dissemination system, introduce roaming scence Peer List shared mechanism, when roamer is during to home domain request Peer List, home domain is to visit territory request Peer List and return to user, user can go out downloads of media data from visit domain node, thereby reduces bandwidth pressure and the data transmission delay of the backbone network that between territory, traffic transport is brought.
Compared with prior art, the present invention has the following advantages:
Flow localized: ownership place Tracker-AS, after visited place Tracker-AS asks for Peer List, returns to roamer; Based on resource charging: visited place Tracker-AS can collect the charges to ownership place Tracker-AS based on returning to number of nodes in user's PeerList.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (11)
1. the distributed content distribution method under roaming scence, is characterized in that, the method comprises:
Subscriber equipment sends peer node list (Peer List) request to its home domain network equipment, home domain network equipment obtains Peer List according to this Peer List request from the current visit domain network side equipment of this subscriber equipment, and the Peer List obtaining is transmitted to this subscriber equipment;
This subscriber equipment obtains content according to this Peer List from the content source facility in current visit territory.
2. method according to claim 1, is characterized in that, home domain network equipment obtains Peer List according to this Peer List request from the current visit domain network side equipment of this subscriber equipment and comprises:
Home domain network equipment is determined current visit domain network side equipment according to the subscriber equipment current location information carrying in this Peer List request, obtains Peer List from the visit domain network side equipment of determining.
3. method according to claim 2, is characterized in that, obtains Peer List comprise from the visit domain network side equipment of determining:
Described home domain network equipment sends Peer List request to described visit domain network side equipment,
The Peer List request that described visit domain network side equipment sends according to described home domain network equipment, returns to described home domain network equipment by the Peer List in this visit territory.
4. according to the method described in claim 1 or 2 or 3, it is characterized in that, the method also comprises:
Subscriber equipment obtains the performance of content according to the content source facility from current visit territory, again send Peer List request to home domain network equipment, home domain network equipment obtains the Peer List of renewal according to this Peer List request from current visit domain network side equipment, and the Peer List of this renewal is returned to this subscriber equipment;
Subscriber equipment reselects content source facility according to the Peer List of this renewal, obtains content from the content source facility reselecting.
5. the distributed content dissemination system under a roaming scence, it is characterized in that, this system comprises subscriber equipment, first network side apparatus and second network side apparatus, first network side apparatus is the home domain network equipment of described subscriber equipment, and second network side apparatus is the visit domain network side equipment of described subscriber equipment;
Described subscriber equipment, for send Peer List request to first network side apparatus, the Peer List returning according to first network side apparatus, the content source facility from this Peer List is obtained content;
Described first network side apparatus, for locate the visit domain network side equipment of this subscriber equipment according to the Peer List request of described subscriber equipment, send Peer List request according to positioning result to described second network side apparatus, the Peer List that this second network side apparatus is returned is transmitted to this subscriber equipment;
Described second network side apparatus, for according to the Peer List request of described first network side apparatus, returns to Peer List to first network side apparatus.
6. system according to claim 5, is characterized in that,
Described first network side apparatus, for asking the positional information of carrying to locate the current location of this subscriber equipment according to the Peer List of described subscriber equipment, determines the visit domain network side equipment of this subscriber equipment according to the current location of this subscriber equipment.
7. system according to claim 5, is characterized in that, this system can also comprise accounting module;
Described accounting module, the number of nodes comprising for the Peer List returning to first network side apparatus according to second network side apparatus carries out charging.
8. a network equipment, is characterized in that, this network equipment comprises the first transceiver module, locating module and the second transceiver module;
Described the first transceiver module, the Peer List request sending for receiving subscriber equipment, the Peer List that the second transceiver module is received is transmitted to this subscriber equipment;
Described locating module, for asking the visit domain network side equipment of locating user devices according to described Peer List;
Described the second transceiver module, for according to the positioning result of locating module, sends Peer List request to the visit domain network side equipment of this subscriber equipment, receives the Peer List that this visit domain network side equipment returns.
9. network equipment according to claim 8, is characterized in that, carries the current location information of subscriber equipment in the Peer List request that described subscriber equipment sends;
Described locating module, asks for the Peer List that resolves described subscriber equipment transmission the current location information carrying, according to the visit domain network side equipment of this current location Information locating subscriber equipment.
10. network equipment according to claim 9, is characterized in that, this equipment also comprises memory module;
Described memory module, for storing position and the address information of other network equipments;
Described locating module, for position and the address information of other network equipments of storing in the subscriber equipment current location information of asking to carry according to Peer List and described memory module, determines the visit domain network side equipment address that this subscriber equipment is current.
11. 1 kinds of subscriber equipmenies, is characterized in that, this subscriber equipment comprises the first acquisition module and the second acquisition module;
Described the first acquisition module, for send the Peer List request that carries this subscriber equipment current location information to home domain network equipment, receive the Peer List that this home domain network equipment returns, this Peer List comprises the content source facility information in the current visit of this subscriber equipment territory;
Described the second acquisition module, for the Peer List returning according to home domain network equipment, the content source facility from the current visit of this subscriber equipment territory is obtained content.
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| CN112887959A (en) * | 2020-10-29 | 2021-06-01 | 中国电子科技集团公司第三十研究所 | Method for realizing distributed WCDMA user roaming data synchronization |
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| CN101640699A (en) * | 2009-08-21 | 2010-02-03 | 深圳创维数字技术股份有限公司 | P2P streaming media system and streaming media downloading method thereof |
| CN101729273A (en) * | 2008-10-27 | 2010-06-09 | 中国移动通信集团公司 | Streaming media distribution system, method and device |
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| US20040203751A1 (en) * | 2002-10-21 | 2004-10-14 | Excino Technologies Inc. | Peer-to-peer (P2P) collaborative system for service aggregation, rapid service provisioning and service roaming |
| CN1964480A (en) * | 2005-11-10 | 2007-05-16 | 华为技术有限公司 | A method for switching stream media server |
| CN101136911B (en) * | 2006-08-31 | 2010-12-15 | 腾讯科技（深圳）有限公司 | Method to download files using P2P technique and P2P download system |
| CN101123565B (en) * | 2007-07-30 | 2011-07-13 | 中兴通讯股份有限公司 | P2P system and resource query method for this system |
| WO2010094334A1 (en) * | 2009-02-19 | 2010-08-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Traffic control for roaming subscribers |
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| CN101729273A (en) * | 2008-10-27 | 2010-06-09 | 中国移动通信集团公司 | Streaming media distribution system, method and device |
| CN101425969A (en) * | 2008-11-25 | 2009-05-06 | 华为技术有限公司 | Scheduling method, apparatus and system |
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