CN101043397A - Network transmission control method and system - Google Patents
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Abstract
The provided network transmission control method for network transmission multicast business can detect the occupancy of network bandwidth to decide whether the bandwidth can support new business, if not, rejects the new business request for multicast business QoS.
Description
Technical field
The present invention relates to the communications field, disclose a kind of network transmission control method and system especially.
Background technology
The world today, the network technology develop rapidly, along with network speed is more and more faster, the business of the network carrying is also more and more diversified.Communication network is along with increasing professional IPization, (Multi-Play) merged in multi-service has been the trend that current network is built, business such as Voice over IP (VoIP) business, internet television (IPTV) and the Internet (Internet) online all are fused to gradually goes operation in the network, can reduce the networking and the network operation expense of telecom operators so greatly, make things convenient for fast and flexible that value-added service is provided simultaneously, so the multi-service fusion has become irresistible development trend in the current network development.
Yet owing to the optimization of human wants along with network improves constantly, the bandwidth that network provided often can not satisfy actual traffic needs.Therefore, in order to guarantee important urgent professional prioritised transmission, utilized service quality (quality of service, QoS) technology, in the multi-service UNE, QoS generally realizes by Differentiated Services (DiffServ) technology in IP network, stamp different priority tags for various Business Stream, the network equipment is preferentially transmitted the stream of sign high priority, reach the purpose of Differentiated Services with this, under network bandwidth condition of limited, the business of high priority just can obtain preferential assurance like this.For example in the IPTV business, set clean culture video request program (Video on Demand, VOD) and the Broadband TV of multicast (Broadband TV, priority BTV) is all than higher, when the network bandwidth is nervous, just preferentially satisfy the demand of high BTV of priority and VOD business like this.
But, how to guarantee that for the business of equal priority transmission quality does not but have good solution.
With VOD and BTV for example, because the network planning is unreasonable, perhaps the consideration of convergence ratio guarantees to resemble the very big situation of this VoIP Business Stream burst in period in the Spring Festival fully, causes the IPTV business situation of bandwidth deficiency may occur.And according to existing differentiated services technology, the service priority of all BTV and VOD is consistent, can't give a priority separately at each video flowing, therefore under the situation of network high-priority service burst, network can not provide sufficient bandwidth to guarantee to the IPTV business, caused all IPTV video frequency programs packet loss, time delay and shake to occur thus, caused situation through all programs while cards of same flow bottleneck, like this, all IPTV users can not normally watch program no matter watch that channel all can produce card.
For this reason, promise to undertake that by it (Commit Access Control, CAC) technology itself detect network condition to guarantee the quality of VOD by the IPTV system, solve and make problem obtain part in access control for VOD as clean culture.
But for the BTV as multicast, current way mainly is to reserve the transmission quality that enough bandwidth guarantee BTV by the network planning to it.But this mode underaction has in network under the situation of the higher business burst of other priority, will cause the transmission of all multicast services not reach quality requirement; And can not cause waste of network resources for a long time in the BTV business.
As shown in Figure 1, be existing demand (telecommunication) service concrete structure schematic diagram, its video request program flow process is as follows:
1, set-top box STB plays a video content to the IPTV system request;
The IPTV middleware is asked respective resources by Simple Object Access Protocol (SOAP) agreement to asset management device RM;
2, RM obtains user's physical location information to access management system AMS by soap protocol;
3, whether the equipment of RM computation requests user's video flowing process can satisfy respective resources (mainly being bandwidth) demand, and to IPTV middleware loopback application result, if apply for successfully, also will cut the resource of relevant device in resource database;
4, the IPTV middleware sends video flowing or refusing user's request and pushes the information picture to the user to the user according to the RM return result.
Can see, the CAC of IPTV program request finishes by the detection of IPTV system itself and action, but do not relate to the CAC of multicast service, do not consider the fusion operation of business in same network of other higher priority in the existing solution of IPTV yet, think that multicast service guarantees bandwidth by planning fully.
There is following problem in this kind demand (telecommunication) service:
1, BTV and VOD generally run in consolidated network, and equipment has certain amalgamation, this way can only guarantee the CAC of demand (telecommunication) service, can not guarantee the CAC of multicast service, think that the CAC of multicast guarantees by the network planning, but also have (especially access network) operation in same network of the higher business of other priority in fact probably, under the situation of higher priority business burst, may cause all multicast services situation of card simultaneously;
2, the prior art scheme need be preserved the topology of entire I PTV network on RM, need know the whole routing situation of video flowing in advance, could ask under the situation of video flowing bandwidth occupancy situation (perhaps all resource informations being recorded in the RM database) the user like this to the corresponding port that corresponding network device inquiry video flowing passes through, like this to the having relatively high expectations of RM, RM needs again synchronously or calculates under the situation that route changes;
3, the prior art scheme requires RM to obtain user position information from AMS, increased AMS and RM alternately and resource cost that brings thus and uncertainty, interrupt the consequence that may bring such as the network between RM and the AMS.
Same, except that BTV, other multicast services also all are faced with the similar bandwidth deficiency of BTV and cause the problem that the overall transfer quality descends.
Summary of the invention
The object of the present invention is to provide a kind of network transmission control method and system, guarantee Network Transmission multicast service quality.
Network transmission control method of the present invention is used for the quality control of Network Transmission multicast service, it is characterized in that:
Detect the behaviour in service of the network bandwidth, judge whether the network bandwidth can move new business, if can not then refuse new service request.
Wherein, judge by setting threshold values whether the network bandwidth can move new business, the bandwidth that the calculating new service request needs and the summation of the bandwidth of the business of moving can't normally be moved new business as if just being judged as greater than threshold values, otherwise can move new business.
In addition, this method can further comprise judging whether the network bandwidth can normally move the business of moving, if can not normally move, then closes the business that a part is being moved.Wherein, judge by setting threshold values whether the network bandwidth can normally move the business of moving, if the network bandwidth that the current business of moving takies is greater than threshold values, just be judged as and normally move the business of moving, otherwise be judged as the business that to move the current operation of normal operation.
The present invention also provides a kind of Network Transmission control system, is used for the quality control of Network Transmission multicast service, it is characterized in that comprising detection module, judge module and processing module,
Detection module is used to detect the operating position of current bandwidth;
Judge module is used for the behaviour in service according to current bandwidth, judges whether network can accept new service request;
Processing module is used for handling according to the judged result of judge module, if judged result be for can accept then to accept new service request, otherwise just refuses new service request.
Wherein, whether the bandwidth of described judge module by judging current use surpasses a default threshold values with the summation of the new required bandwidth of service request, can normally not move the business of moving if having above then representing.
In addition, this judge module is further used for judging whether the network bandwidth can normally move the business of moving.Wherein, whether the bandwidth that the business that described judge module is moving by judgement takies surpasses a default threshold values, judges whether network can normally move current business.
Accordingly, this processing module is further used for handling according to the judged result of judge module, if the network bandwidth can't normally move the business of current operation, and the business moved of closed portion then.
Described Network Transmission control system can be arranged in the multicast access equipment.
Described multicast service for example is Broadband TV BTV.
As seen, network transmission control method and system that the present invention proposes can manage control to multicast service in the network, guarantee the transmission quality of multicast service.Technical solution of the present invention has solved the CAC of multicast service, and a plurality of video program streams that guarantee multicast service under the situation of bandwidth deficiency are card simultaneously not, and also there is the situation of other higher priority business in the network that especially is useful in the business that IPTV is provided; Technical solution of the present invention BTV need not to preserve the topology of entire I PTV network on RM, directly realize the CAC of multicast service by equipment, and the result being passed through RM-〉the flow process final notice IPTV user of IPTV middleware-set-top box accomplishes with network C AC result synchronous, can merge mutually with the CAC flow sheet equipment of demand (telecommunication) service simultaneously, need not to increase new equipment unit; Technical solution of the present invention RM need not to carry out alternately with AMS, and scheme is simple, and resource cost is little and uncertain low.
Description of drawings
Fig. 1 is existing BTV business structure schematic diagram;
Fig. 2 is the network transmission control method first embodiment schematic diagram of the present invention;
Fig. 3 is the network transmission control method second embodiment schematic diagram of the present invention;
Fig. 4 is a Network Transmission control system structural representation of the present invention;
Fig. 5 is applied to the structural representation of VOD for the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.Network transmission control method of the present invention, be used for the quality control of Network Transmission multicast service, because BTV is the more multicast service of a kind of current application, for convenience of description, below promptly be that example is specifically described the present invention with BTV, but it is emphasized that the present invention is not limited to be applied in BTV, and can be applied in other multicast services equally.
First embodiment
Fig. 2 is the first embodiment process step figure that network transmission control method of the present invention is applied to BTV.As shown in the figure, at first, send solicited message by Internet Group Management Protocol IGMP (Internet Group Management Protocol), program of request multicast as the set-top box of BTV terminal.
The Network Transmission control system is received the IGMP request of set-top box, checks the remaining bandwidth of multicast port and the required bandwidth that takies of BTV of request.
According to application required bandwidth of multicast data flow and current remaining bandwidth, whether decision allows the user to watch corresponding program.Its concrete mode is, multicast port bandwidth threshold values is set on the Network Transmission control system, judges that the summation of bandwidth that existing program takies and the new required bandwidth of application will be above predefined threshold values.Need to prove, the present invention is above-described to be the new situation that adds a multicast group, only that is to say the application of new program is judged, if this user applies is that existing other users are watching respective program, then because be to flow in the multicast access equipment duplicated multicast, need not to increase the bandwidth of up multicast mouth, therefore need not to judge.
If being the bandwidth that existing program takies, the rapid judged result of previous step adds that the summation of the required bandwidth of program of the new application of user surpasses predefined threshold values, with regard to refusing user's request, send failed message to network management system, the situation that takies of current bandwidth remains unchanged; To avoid adding business newly to cause that bandwidth is not enough, cause in the network all users that watch BTV card simultaneously; Otherwise just accept user applies.
The process of accepting user applies is: allow the user to add corresponding multicast group, and to the corresponding multicast data flow of multicast source application, and to network management system transmission application success message, and cut the multicast mouth respective bandwidth that new application takies.Then, network management system with the message received to resource management (ResourceManagement, RM) module report, upgrade IPTV relevant device User Status simultaneously, the RM module is reported the message of receiving to the IPTV middleware, upgrade IPTV relevant device resource status, the IPTV middleware refreshes corresponding state information or pushes the corresponding prompt page to the user according to reporting the result.The final realization sends the BTV program to the user.Because concrete reception process is not emphasis of the present invention place, therefore do not do detailed description.
Second embodiment
In the present embodiment, further detect the current bandwidth occupancy situation of network, and judge whether the current network bandwidth can satisfy the needs of ongoing business.In the BTV business, because network failure or have the higher priority business to wait a variety of causes suddenly, cause the multicast transmission environment to worsen suddenly, cause current all programs of watching the user of BTV to watch that problems such as packet loss, time delay and shake all take place and can't normally watch.
Therefore present embodiment judges further also whether whether enough bandwidth can normally move the BTV business of moving to current network bandwidth, as shown in Figure 3 except that the operation of carrying out first embodiment.Time cycle of for example every interval of judgment mode is just judged once, if can not normally move current all BTV business, then closes the business that a part is being moved.It is equally by preestablishing threshold values, judge whether the current network bandwidth can normally move the business of moving, if the network bandwidth that current BTV business takies is not more than threshold values, just is judged as and normally moves the BTV that is moving, and do not carry out subsequent treatment; Otherwise be judged as the BTV program that can normally move current operation, close a part of BTV program to discharge bandwidth, till the network bandwidth that current BTV business takies is not more than default threshold values.In the present embodiment, according to watching what order of BTV program number of users to close, at first close the BTV program of watching that the user is minimum.
BTV program method for closing is: initiating a message sends to network management system, network management system learns which program of which user is withdrawed from the back by force and upgrades the multicast corresponding state and transmit this message to RM, RM transmits this message according to this information updating multicast corresponding state and to the IPTV middleware, the IPTV middleware is according to this information updating synchronization multicast User Status, and pushes program to the user and withdraw from information.Owing to be not emphasis of the present invention, therefore repeat no more.
Shown in Figure 4 is Network Transmission control system structural representation of the present invention.Network Transmission control system of the present invention is used for the quality control of Network Transmission multicast service, and it comprises detection module 11, judge module 12 and processing module 13.
Wherein, described detection module 11 is used to detect the operating position of network current bandwidth; Described judge module 12 is used for the behaviour in service according to current bandwidth, judge whether network can accept new service request, in the present embodiment, this judge module 12 judges whether the two summation of the bandwidth of current use and the new required bandwidth of service request surpasses a default threshold values, can't accept new service request again as if then thinking, otherwise think and to accept new service request above default threshold values; Described processing module 13 is used for handling according to the judged result of described judge module 12, if judged result be for can accept then to accept new service request, otherwise just refuses new service request, and notice sends its request of terminal of asking and is rejected.
Wherein, this judge module 12 can be further used for the business of judging whether the network bandwidth can normally move.Whether its bandwidth of judging current use surpasses a default threshold values, judge whether network can normally move current business, think that then current network can't guarantee normally to move the current business of moving if surpass threshold values, otherwise think that network can continue normally to move the current business of moving.Accordingly, this processing module 13 is further used for handling according to the judged result of judge module 12, if the judged result network bandwidth can't normally move the business of current operation, then close the business moved of a part, be not more than this default threshold values up to the professional shared bandwidth of current operation.
Above-mentioned Network Transmission control system can be provided with separately, and preferred implementation is to be arranged in the networking access device.
Be that example is elaborated below with IPTV.Shown in Figure 5, be the structural representation that the present invention is applied to BTV.
At this moment, the user adds the CAC operation flow of a new multicast group and is:
1. set-top box is by program of IGMP agreement request multicast;
2. multicast access equipment is received the IGMP request of set-top box, check the bandwidth of own multicast port, according to application required bandwidth of multicast data flow and existing remaining bandwidth, whether decision allows the user to watch respective program, can consider to be provided with a multicast port bandwidth threshold values, if existing program occupied bandwidth adds the video program stream bandwidth of the new application of user and surpasses this threshold values, will not allow the user to watch this program; Above-described is the new situation that adds a multicast group of multicast access equipment, if existing other users watch respective program before this user applies, then because flow in the multicast access equipment duplicated multicast, need not to increase the bandwidth of up multicast mouth, calculate thereby need not to carry out CAC, the description here needs the situation of bandwidth application at program of new adding;
3. if the multicast access equipment bandwidth is enough, then allow the user add corresponding multicast group, the corresponding multicast data flow of multicast source application, and, cut multicast mouth respective bandwidth to network management system newspaper success message; If multicast access equipment bandwidth deficiency is then reported lost property to the authorities to network management system and lost message, occupied bandwidth does not change;
4. network management system is reported the message of receiving to the RM module, upgrades IPTV relevant device User Status simultaneously;
5.RM the message of receiving is reported to the IPTV middleware, is upgraded IPTV relevant device resource status simultaneously;
6.IPTV middleware refreshes corresponding state information or pushes the corresponding prompting page to the user according to reporting the result;
7. annotate: adopt the IGMP protocol interaction between set-top box and the multicast access equipment, adopt snmp protocol communication between multicast access equipment and the network management system, adopt soap protocol communication between network management system and the RM, adopt soap protocol communication between RM and the IPTV middleware, adopt http protocol communication between IPTV middleware and the set-top box.
Wherein, adopt the IGMP protocol interaction between set-top box and the multicast access equipment, adopt snmp protocol communication between multicast access equipment and the network management system, adopt soap protocol communication between network management system and the RM, adopt soap protocol communication between RM and the IPTV middleware, adopt http protocol communication between IPTV middleware and the set-top box.
At this moment, because other business burst than IPTV high priority cause the bandwidth deficiency, the anti-card operation flow simultaneously of BTV is:
1, whether multicast access equipment regularly detects the bandwidth of multicast mouth above threshold values, if surpass, then select the minimum program of user multicast to withdraw from and discharge bandwidth, circulation is carried out and is lower than threshold values up to multicast mouth occupied bandwidth, and, tell which program of which user of network management system is withdrawed from by force to the network management system report;
2, network management system is transmitted this message according to this information updating multicast corresponding state and to RM;
3, RM transmits this message according to this information updating multicast corresponding state and to the IPTV middleware;
4, the IPTV middleware is according to this information updating synchronization multicast User Status and push program to the user and withdraw from information.
Top description launches at multicast access equipment, in fact, can realize this technology equally on the backbone equipment of supporting multicast routing protocol, solves the CAC problem of backbone network group broadcasting program.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation equally.
Claims (11)
1. a network transmission control method is used for the quality control of Network Transmission multicast service, it is characterized in that:
Detect the behaviour in service of the network bandwidth, judge whether the network bandwidth can move new business, if can not then refuse new service request.
2. network transmission control method as claimed in claim 1, wherein, judge by setting threshold values whether the network bandwidth can move new business, the bandwidth that the calculating new service request needs and the summation of the bandwidth of the business of moving, new business can't be normally moved as if just being judged as, new business can be moved otherwise be judged as greater than threshold values.
3. network transmission control method as claimed in claim 1, wherein, this method further comprises judging whether the network bandwidth can normally move the business of moving, if can not normally move, then closes the business that a part is being moved.
4. network transmission control method as claimed in claim 3, wherein, judge by setting threshold values whether the network bandwidth can normally move the business of moving, if the network bandwidth that the current business of moving takies is greater than the threshold values of setting, just be judged as and normally move the business of moving, can normally move the business of moving otherwise be judged as.
5. a Network Transmission control system is used for the quality control of Network Transmission multicast service, it is characterized in that comprising detection module, judge module and processing module, wherein:
Detection module is used to detect the operating position of current bandwidth;
Judge module is used for the behaviour in service according to current bandwidth, judges whether network can accept new service request;
Processing module is used for handling according to the judged result of judge module, if judged result be for can accept then to accept new service request, otherwise refuses new service request.
6. Network Transmission control system as claimed in claim 5, wherein, whether bandwidth and the summation of new service request required bandwidth of described judge module by judging current use surpasses a default threshold values and judges whether network can accept new service request.
7. Network Transmission control system as claimed in claim 5, wherein, described judge module is further used for the business of judging whether the network bandwidth can normally move.
8. Network Transmission control system as claimed in claim 7, wherein, described judge module is used to judge whether the bandwidth that the business moved takies surpasses a default threshold values, then represents normally not move the business of moving if having to surpass.
9. Network Transmission control system as claimed in claim 5, wherein, this processing module is further used for handling according to the judged result of judge module, if the network bandwidth can't normally move the business of moving, the business moved of closed portion then.
10. Network Transmission control system as claimed in claim 5, wherein, described Network Transmission control system is arranged in the multicast access equipment.
11. as each described Network Transmission control system of claim 5-10, wherein, described multicast service is Broadband TV BTV.
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| CN105704549A (en) * | 2014-11-24 | 2016-06-22 | 中兴通讯股份有限公司 | Bandwidth control method and device |
| CN106330476A (en) * | 2015-06-15 | 2017-01-11 | 中兴通讯股份有限公司 | Method for acquiring user side port guaranteed bandwidth and network monitoring system |
| CN106330476B (en) * | 2015-06-15 | 2021-02-19 | 中兴通讯股份有限公司 | Method for obtaining guaranteed bandwidth of user side port and network monitoring system |
| CN110149251A (en) * | 2019-07-02 | 2019-08-20 | 福建广电网络集团股份有限公司 | A kind of access net quality evaluation system |
| CN110519119A (en) * | 2019-07-31 | 2019-11-29 | 视联动力信息技术股份有限公司 | Bandwidth management method, device and storage medium based on view networking |
| CN110519119B (en) * | 2019-07-31 | 2020-11-13 | 视联动力信息技术股份有限公司 | Bandwidth management method and device based on video network and storage medium |
| CN115633197A (en) * | 2022-09-15 | 2023-01-20 | 海南乾唐视联信息技术有限公司 | Service data distribution system, method, device, electronic equipment and medium |
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