CN101917742A - Data transmission method, equipment and system - Google Patents
Data transmission method, equipment and system Download PDFInfo
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Abstract
The embodiment of the invention discloses a data transmission method, which is used for reducing transmission cost and service delay. The method in the embodiment of the invention comprises the following steps that: media processing equipment receives a service request sent by a user terminal, wherein the media processing equipment is positioned on a wireless access network where the user terminal is positioned; the media processing equipment judges whether service data corresponding to the service request is saved or not; and if the service data is saved in the media processing equipment, the media processing equipment sends the service data to the user terminal. In addition, the embodiment of the invention discloses data transmission equipment and a data transmission system. The method, equipment and system in the embodiment of the invention can effectively reduce the transmission cost and service delay.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of data transmission method, equipment and system.
Background technology
See also Fig. 1, traditional global system for mobile communications (UMTS, Universal MobileTelecommunications System)/high-speed packet access (HSPA, High Speed Packet Access) the media network framework comprises: wireless access network (RAN, Radio Access Network), back haul link (Backhaul) transmission network, key (Backbone) transmission network, packet switching (PS, PacketSwitch) core net, content distributing network (CDN, Content Distributed Network), business platform and ISP.
Wherein, RAN comprises base station (NodeB) and radio network controller (RNC, Radio NetworkController), the PS core net comprises GPRS serving GPRS support node (SGSN, ServingGPRS Support Node) and gateway GPRS supporting node (GGSN) (GGSN, GatewayGPRS Support Node).
When user terminal requests is carried out the PS business, this service request arrives business platform by RAN, Backbone transmission network, PS core net and CDN, business platform gets access to the corresponding business data according to this service request from ISP (Internet SP), perhaps from CDN, get access to the corresponding cache business datum, and business datum is sent to user terminal by CDN, PS core net, Backbone transmission network and RAN.
But in the data transmission procedure of above-mentioned prior art, this business datum is process CDN, PS core net, Backbone transmission network and RAN in process of transmitting, thereby has increased taking of Internet resources, has improved transmission cost;
Secondly, because business datum can cause traffic delay bigger through CDN, PS core net, Backbone transmission network and RAN in process of transmitting.
Summary of the invention
The embodiment of the invention provides a kind of data transmission method, equipment and system, can reduce transmission cost, reduces traffic delay.
The data transmission method that the embodiment of the invention provides comprises: medium processing device receives the service request that user terminal sends, and described medium processing device is positioned at the wireless access network at described user terminal place; Described medium processing device judges whether to preserve described service request corresponding service data; If described medium processing device is preserved described business datum, then described medium processing device sends described business datum to described user terminal.
The data transmission method that the embodiment of the invention provides comprises: content distributing network CDN receives the service request of the user terminal of business platform transmission; Described CDN obtains the information of the medium processing device of described user terminal correspondence, and described medium processing device is positioned at the wireless access network at described user terminal place; Described CDN is redirected to described medium processing device with described user terminal.
The medium processing device that the embodiment of the invention provides, described medium processing device is positioned at the wireless access network at user terminal place, and described medium processing device comprises: first receiving element is used to receive the service request that described user terminal sends; First judging unit is used to judge whether to preserve the described service request corresponding service data that described first receiving element receives; First transmitting element is used for sending described business datum to described user terminal when described business datum is preserved in described first judging unit judgement.
The content distributing network CDN that the embodiment of the invention provides comprises: the service request receiving element is used to receive the service request of the user terminal that business platform sends; Information query unit is used to obtain the information of the medium processing device of described user terminal correspondence, and described medium processing device is positioned at the wireless access network at described user terminal place; Be redirected the unit, be used for the information obtained according to described information query unit, described user terminal is redirected to described medium processing device.
The data transmission system that the embodiment of the invention provides comprises: medium processing device, and CDN.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
In the embodiment of the invention, when medium processing device preservation local cache has the business datum of user terminal requests, this business datum that medium processing device directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduced transmission cost, reduce traffic delay, promoted user experience.
Description of drawings
Fig. 1 is the structural representation of network in the prior art;
Fig. 2 is the structural representation of network in the embodiment of the invention;
Fig. 3 is an embodiment schematic diagram of data transmission method of the present invention;
Fig. 4 is another embodiment schematic diagram of data transmission method of the present invention;
Fig. 5 is another embodiment schematic diagram of data transmission method of the present invention;
Fig. 6 is another embodiment schematic diagram of data transmission method of the present invention;
Fig. 7 is another embodiment schematic diagram of data transmission method of the present invention;
Fig. 8 is an embodiment schematic diagram of medium processing device of the present invention;
Fig. 9 is another embodiment schematic diagram of medium processing device of the present invention;
Figure 10 is the embodiment schematic diagram of CDN of the present invention;
Figure 11 is an embodiment schematic diagram of data transmission system of the present invention.
Embodiment
The embodiment of the invention provides a kind of data transmission method, equipment and system, is used to reduce transmission cost, reduces traffic delay.
See also Fig. 2, the network configuration in the embodiment of the invention can comprise:
Wireless access network, packet switched core network, backbone transport network, content distributing network CDN, business platform and ISP, optionally, can also comprise strategy and charging rule functions (PCRF, Policy and Charging Rules Function) entity.
Wireless access network links to each other by the backbone transport network with packet switched core network.Packet switched core network communicates by Gi interface and CDN.Medium processing device communicates with business platform and CDN respectively by the Gi interface, and optionally, medium processing device can also communicate by Gi interface and PCRF entity.
Wherein, include the base station in the Radio Access Network, RNC and medium processing device, base station and RNC can be used to finish user's wireless access; Medium processing device can be used for the business datum of local cache user terminal requests, and data in buffer is sent to user terminal by wireless access network, optionally, medium processing device can also be used for media business to quicken, and carries out content adaptation and/or code stream selection to sent business datum.Medium processing device can be positioned at the RNC side, can be built among the RNC, also can be independent of RNC and be provided with.Each RNC can corresponding medium processing device, also can the corresponding medium processing device of a plurality of RNC.
Include SGSN and GGSN in the packet switched core network, can be used to finish PS user's access authentication.
Business platform can be used to finish the customer service access-in management.
CDN can be used to finish professional storage transmission and user terminal is redirected to corresponding medium processing device.
The PCRF entity can be used to generate subscriber policy, and is handed down to corresponding medium processing device.
Need to prove, network configuration shown in Figure 2 also goes for the follow-up embodiment of the invention, and the scheme among all embodiment of the present invention is not only applicable to the UMTS network, is applicable to the network of other types too, long-term evolving network etc. for example, follow-up repeating no more.
Below the data transmission method in the embodiment of the invention is described in detail, sees also Fig. 3, a specific embodiment of data transmission method of the present invention comprises:
301, medium processing device receives the service request that user terminal sends;
When user terminal when network side is initiated service request and is carried out business with request, medium processing device can get access to this service request that user terminal sends, the business of describing in present embodiment and the subsequent embodiment, it can be Packet Service, for example, can be mobile data services, video traffic in actual applications, audio services etc. are not specifically done qualification herein.
Need to prove that in the present embodiment, medium processing device is positioned at the wireless access network at user terminal place.
302, medium processing device judges whether to preserve business datum, if turn to step 303;
After medium processing device receives the service request of user terminal transmission, can determine the pairing business datum of this service request, medium processing device can judge whether to preserve these business datums then, for example, whether at local cache the corresponding business data.
303, medium processing device sends business datum to user terminal.
When medium processing device was preserved this business datum, medium processing device can send this business datum to user terminal by wireless access network, for example, can be pushed to user terminal.
In the present embodiment, when medium processing device preservation local cache has the business datum of user terminal requests, this business datum that medium processing device directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduced transmission cost, reduce traffic delay, promoted user experience.
For the ease of understanding, with another embodiment the data transmission method in the embodiment of the invention is described below, specifically see also Fig. 4, another embodiment of the inventive method comprises:
401, medium processing device receives and presets business datum;
Need to prove that in the present embodiment, medium processing device is positioned at the wireless access network at user terminal place.Presetting business datum and sent to medium processing device by CDN, preset business datum, for example, can be the most popular business datum of part, can be the business datum of specific user terminal request also, does not limit herein.
Medium processing device receives presetting after the business datum that CDN sends, and can preserve this and preset business datum, for example, can this presets business datum at local cache.
402, medium processing device receives subscriber policy;
Wherein, subscriber policy can be generated by the end message of PCRF entity according to user terminal.
For example, this end message can comprise information such as terminal type, terminal operating system and/or terminal software version, this end message can be sent to the PCRF entity by business platform, the also international mobile station equipment identification code of the terminal IMEI information that can send to the PCRF entity according to RNC by the PCRF entity, query facility identification log server EIR acquires, and does not limit herein.
After the PCRF entity gets access to end message, can generate subscriber policy, can be according to this subscriber policy at different users' precedence information, and different service quality (QoS, Quality ofService) information is carried out corresponding service and is handled.
Need to prove that the PCRF entity can also further get access to this user's CAMEL-Subscription-Information except generating the subscriber policy according to end message from the home subscriber register, and generates subscriber policy in conjunction with this CAMEL-Subscription-Information.
Medium processing device can get access to the subscriber policy that the PCRF entity generates from the PCRF entity.
403, medium processing device receives the service request that user terminal sends;
When user terminal when network side is initiated service request and is carried out business with request, medium processing device can get access to this service request that user terminal sends.
404, medium processing device judges whether to preserve and service request corresponding service data, if, turn to step 407, if not, turn to step 405;
After medium processing device receives the service request of user terminal transmission, can determine the pairing business datum of this service request, medium processing device can judge whether to preserve these business datums then, for example, judges whether this locality is cached with and service request corresponding service data.
405, medium processing device sends this service request to CDN;
When medium processing device was determined not preserve the corresponding service data, medium processing device was then transmitted this service request to this CDN.
406, medium processing device receives the business datum of CDN transmission and turns to step 407;
In the present embodiment, owing to can preserve the corresponding business data among the CDN, so medium processing device after CDN has sent service request, can receive the corresponding service data from CDN.
Medium processing device is after CDN receives the corresponding service data, can also judge whether this business datum satisfies the condition that presets, if satisfy, then this business datum can be stored in medium processing device this locality, in actual applications, concrete prerequisite, for example, can specifically not limit for professional temperature reaches threshold value etc. herein.
407, medium processing device obtains interface-free resources information and/or resource information;
When medium processing device determines to preserve business datum, or after CDN gets access to business datum, can obtain the interface-free resources information of sub-district, user terminal place and/or NodeB resource information to RNC, promptly can obtain the interface-free resources information of sub-district, user terminal place, perhaps, obtain the resource information of NodeB, perhaps, obtain the interface-free resources information of sub-district, user terminal place and NodeB resource information to RNC to RNC.
Need to prove that medium processing device can get access to these information from RNC, also can get access to these information, specifically do not do qualification herein from other network elements of wireless access network.
408, medium processing device carries out sending after content adaptation and/or the code stream selection to business datum.
Wherein, medium processing device gets access to after interface-free resources information and/or the resource information, and business datum is carried out content adaptation and/or code stream selection, promptly content adaptation can be carried out, perhaps, code stream selection can be carried out, perhaps, also can carry out content adaptation and code stream selection.Medium processing device also can, after getting access to interface-free resources information and/or resource information, in conjunction with before the subscriber policy that gets access to, perhaps can also carry out content adaptation and/or code stream selection to business datum further combined with business information etc.
In the present embodiment, can be according to subscriber policy at different users' precedence information, and different QoS information is carried out the corresponding service processing, so medium processing device can carry out content adaptation and/or code stream selection according to this subscriber policy according to interface-free resources information and/or resource information.
For example, active user's subscriber policy is " Gold Subscriber; priority is the highest; the service transmission rate that will guarantee this user when network environment worsens at least is 2Mbit/s; when network environment is good; the highest the transmission rate of this user's business can be increased to 20Mbit/s ", suppose that the active user is asking the playing network video, medium processing device gets access to after interface-free resources information and/or the resource information, how can determine current network environment, if interface-free resources information and/or resource information are higher than first threshold value, the expression network environment is good, then can improve the transmission rate of active user's business, promptly can improve the code check that the user asks the Internet video play, reach as high as 20Mbit/s, if interface-free resources information and/or resource information are lower than second threshold value, the expression network environment worsens, then need to reduce the transmission rate of active user's business, but need to guarantee the transmission rate of 2Mbit/s at least, so can cut out or compress the Internet video that the user asks to play, make that its code check is 2Mbit/s.
Need to prove, only be content adaptation process in the present embodiment and/or code stream selection process to be described above with some examples, be understandable that, in actual applications, medium processing device can also carry out content adaptation and/or code stream selection according to other mode, and detailed process does not limit herein.
In the present embodiment, when medium processing device preservation local cache has the business datum of user terminal requests, this business datum that medium processing device directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduced transmission cost, reduce traffic delay, promoted user experience;
Secondly, in the present embodiment, carry out the selection of the adaptive and/or code stream of content by medium processing device, and medium processing device obtain the information of radio open resource from the RNC that belongs to wireless access network can be more promptly and accurately, thereby improved resource utilization.
See also Fig. 5 below, another object lesson of the embodiment of the invention comprises:
501, receive the service request that business platform sends;
When but the service request corresponding service data of user terminal were cache contents, business platform sent service request to CDN.
502, obtain the information of medium processing device;
After CDN received service request, this CDN can obtain the information of the medium processing device of user terminal correspondence, and this medium processing device is positioned at the wireless access network at user terminal place.
Need to prove, the information of this medium processing device can be the positional information of medium processing device, in actual applications, for example, CDN can inquire about the information of the medium processing device that obtains the user terminal correspondence from the information of this locality preservation, perhaps also can inquire the information of the medium processing device of user terminal correspondence to the PCRF entity, perhaps also can obtain from the SGSN inquiry, perhaps get access to the information of medium processing device, specifically do not do qualification herein by other approach.For example, if information from the medium processing device of PCRF entity inquiring user terminal correspondence, then PCRF can preserve user terminal IP address that RNC reports and the binding relationship of RNC, the RNC at user terminal place can be obtained according to above-mentioned binding information, and then the information of the medium processing device of user terminal correspondence can be obtained according to the RNC at user terminal place.
503, user terminal is redirected to medium processing device.
CDN gets access to after the information of medium processing device, and CDN can be redirected to medium processing device with user terminal according to this information.For example, CDN can send the message of carrying the medium processing device address information to user terminal, after indicating user terminal is received this message, sends service request to medium processing device.
After CDN was redirected to medium processing device with user terminal, this medium processing device can send business datum to user terminal by wireless access network.
With an instantiation data transmission method in the embodiment of the invention is described below, specifically sees also Fig. 6, another embodiment of the inventive method comprises:
601, CDN sends to medium processing device and presets business datum;
Need to prove that in the present embodiment, medium processing device is positioned at the wireless access network at user terminal place.Presetting business datum can be the most popular business datum of part, can be the business datum of specific user terminal request also, does not limit herein.
602, user terminal is initiated the PDP activation, and GGSN carries out access authentication to user terminal;
User terminal is initiated PDP to SGSN/GGSN and is activated request, the request mobile data services, and GGSN carries out access authentication to user terminal, if access authentication passes through, it is professional then to allow this user terminal to use, the process of concrete access authentication does not limit herein.
603, RNC sends binding relationship;
In the present embodiment, because user terminal at first all can pass through RNC to the data that network side sends, then RNC can get access to the IP address of user terminal.
RNC can send the IP address of user terminal and the binding relationship of the RNC at this user terminal place to the PCRF entity after getting access to the IP address of user terminal, i.e. user terminal and be the binding relationship of the RNC of this subscriber terminal service.
604, RNC sends terminal IMEI information;
In the present embodiment, RNC can perhaps simultaneously, send the IMEI information of user terminal to the PCRF entity after sending binding relationship.
605, the PCRF entity obtains the end message of user terminal;
The PCRF entity gets access to after the IMEI information of RNC transmission, can be according to the IMEI information of this user terminal, the end message of this user terminal is obtained in inquiry in EIR, and for example, this end message can comprise terminal type, terminal operating system and/or terminal software version information etc.
606, the PCRF entity sends subscriber policy to medium processing device;
The PCRF entity generates subscriber policy according to the end message of user terminal, and the implication of the subscriber policy of describing among this subscriber policy and the aforementioned embodiment shown in Figure 4 is identical, repeats no more herein.
607, user terminal sends service request to business platform;
When user terminal when network side is initiated service request and is carried out business with request, user terminal sends this service request to business platform.
608, but whether business platform judges service request corresponding service data are cache contents;
In the present embodiment, business platform receives after the service request of user terminal transmission, can determine this service request corresponding service type, thereby determine according to this type of service but whether these service request corresponding service data are cache contents, for example, instant communication data is can not cache contents, but order program data is a cache contents.When but the business datum of determining request was not cache contents, then execution in step 609,610; When but the business datum of determining request was cache contents, then execution in step 611.
609, when but the business datum of determining request is not cache contents, business platform sends service request to Internet SP;
When business platform determines that business datum that user terminal is asked is not cacheable content, need directly send professionally by Internet SP to this user terminal, then business platform sends service request to Internet SP.
610, Internet SP sends business datum to user terminal;
Internet SP obtains the corresponding business data according to this service request after the service request that receives the business platform transmission, and sends business datum to user terminal, and the transfer of data flow process promptly finishes.
611, business platform sends service request to CDN;
When business platform determined that business datum that user terminal is asked is cacheable content, business platform sent this service request to CDN.
612, CDN inquires about the PCRF entity, obtains the positional information of the medium processing device of user terminal correspondence;
After CDN receives the service request that business platform sends, can send query requests to the PCRF entity, with the positional information of the medium processing device that obtains the user terminal correspondence.
Because PCRF has obtained the binding relationship that RNC reports before, can obtain the RNC at user terminal place according to above-mentioned binding information, and then can obtain the information of the medium processing device of user terminal correspondence according to the RNC at user terminal place, and feed back to CDN.
613, CDN is redirected to medium processing device with user terminal;
After the positional information of having determined medium processing device, CDN can be redirected to user terminal this medium processing device.For example, CDN can send the message of carrying the medium processing device positional information to user terminal, after indicating user terminal is received this message, sends service request to medium processing device.
614, user terminal sends service request to medium processing device;
In the present embodiment, because CDN is redirected to medium processing device with user terminal in the step 613, then user terminal sends service request to medium processing device.
615, medium processing device judges whether to preserve service request corresponding service data;
Medium processing device can judge whether to preserve this service request corresponding service data after the service request that receives the user terminal transmission.
616, when medium processing device was not preserved the business datum of this user terminal requests, medium processing device sent this service request to CDN;
If medium processing device is not preserved the corresponding service data, then medium processing device can send service request to CDN, with acquisition request corresponding service data.
617, CDN sends business datum to medium processing device;
CDN sends the corresponding service data to medium processing device after receiving the service request of medium processing device.
618, medium processing device obtains the interface-free resources information of sub-district, user terminal place and/or the NodeB resource information to RNC;
In the present embodiment,, then can directly obtain this business datum,, then can obtain this business datum from CDN if medium processing device is not preserved the corresponding service data from this locality if the corresponding service data are preserved in medium processing device this locality.
When medium processing device obtains this business datum from this locality, perhaps after CDN gets access to business datum, medium processing device obtains the interface-free resources information of sub-district, user terminal place and/or the NodeB resource information to RNC to the RNC inquiry.
619, medium processing device according to subscriber policy, carries out content adaptation and/or code stream selection to business datum according to interface-free resources information and/or resource information;
The process of carrying out content adaptation and/or code stream selection in the present embodiment is consistent with the content that the step 408 among the aforementioned embodiment shown in Figure 4 is described, and repeats no more herein.
620, medium processing device sends business datum to user terminal.
After medium processing device carries out content adaptation and/or code stream selection to business datum, the business datum after handling can be sent to user terminal.
In the present embodiment, when medium processing device preservation local cache has the business datum of user terminal requests, this business datum that medium processing device directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduced transmission cost, reduce traffic delay, promoted user experience;
Secondly, in the present embodiment, carry out the selection of the adaptive and/or code stream of content by medium processing device, and medium processing device obtain the information of radio open resource from the RNC that belongs to wireless access network can be more promptly and accurately, thereby improved resource utilization.
With another instantiation the data transmission method in the embodiment of the invention is described below, specifically sees also Fig. 7, another embodiment of the inventive method comprises:
701～703, identical with step 601～603 among the embodiment shown in Figure 6, repeat no more herein;
704, user terminal is to business platform reporting terminal information;
When user terminal started, user terminal can be to the end message of business platform report of user terminal, and for example, this end message can comprise terminal type, terminal operating system and/or terminal software version information etc.
705, business platform is to PCRF entity reporting terminal information;
Business platform can report this end message the PCRF entity after user terminal gets access to end message.
706～720, identical with step 606～620 among the embodiment shown in Figure 6.
Among present embodiment and the aforementioned embodiment shown in Figure 6, the PCRF entity has adopted different modes to obtain the end message of user terminal respectively, is understandable that, in actual applications, the PCRF entity can also adopt other mode to obtain end message, does not do qualification herein.
In the present embodiment, when medium processing device preservation local cache has the business datum of user terminal requests, this business datum that medium processing device directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduced transmission cost, reduce traffic delay, promoted user experience;
Secondly, in the present embodiment, carry out the selection of the adaptive and/or code stream of content by medium processing device, and medium processing device obtain the information of radio open resource from the RNC that belongs to wireless access network can be more promptly and accurately, thereby improved resource utilization.
Above the data transmission method in the embodiment of the invention is described, introduces corresponding relevant device below, see also Fig. 8, an example of the medium processing device of the embodiment of the invention comprises:
First receiving element 801 is used to receive the service request that user terminal sends;
First judging unit 802 is used to judge whether to preserve the service request corresponding service data that first receiving element 801 receives;
First transmitting element 803 is used for sending business datum to user terminal when business datum is preserved in 802 judgements of first judging unit.
In the present embodiment, when user terminal when network side is initiated service request and is carried out business with request, first receiving element 801 can get access to this service request that user terminal sends, the business of describing in present embodiment and the subsequent embodiment can be a Packet Service, for example, can be mobile data services in actual applications, video traffic, audio service etc. are not specifically done qualification herein.
After first receiving element 801 receives the service request of user terminal transmission, can determine the pairing business datum of this service request, first judging unit 802 can judge whether to preserve these business datums then, for example, whether at local cache the corresponding business data.
When first judging unit 802 determined that medium processing device is preserved this business datum, first transmitting element 803 can send this business datum to user terminal by wireless access network, for example, can be pushed to user terminal.
In the present embodiment, when the business datum of user terminal requests is preserved in 802 judgements of first judging unit, this business datum that first transmitting element 803 directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduced transmission cost, reduce traffic delay, promoted user experience.
For the ease of understanding, with another embodiment the medium processing device in the embodiment of the invention is described below, specifically see also Fig. 9, another embodiment of medium processing device of the present invention comprises:
First receiving element 801 is used to receive the service request that user terminal sends;
First judging unit 802 is used to judge whether to preserve the service request corresponding service data that first receiving element 801 receives;
First transmitting element 803 is used for sending business datum to user terminal when business datum is preserved in 802 judgements of first judging unit.
The function that the concrete function of first receiving element, 801, the first judging units 802 and first transmitting element 803 is described among the described embodiment of Fig. 8 as described above in the present embodiment repeats no more herein.
In the present embodiment, this medium processing device can further include:
Second receiving element 901 is used to receive the business datum that presets that CDN sends, and preserves presetting business datum.
This second receiving element 901 can receive from CDN and preset business datum, and this presets business datum and is sent to second receiving element 901 by CDN, presets business datum, for example, can be the most popular business datum of part, can be the business datum of specific user terminal request also, do not limit herein.
Second receiving element 901 receives presetting after the business datum that CDN sends, and can preserve this and preset business datum, for example, can this presets business datum at local cache.
In the present embodiment, this medium processing device can further include:
Second transmitting element 903 is used for sending service request to CDN when business datum is not preserved in 802 judgements of first judging unit;
The 3rd receiving element 904 is used to receive that CDN sends and service request corresponding service data;
The 3rd transmitting element 905 is used for sending the business datum that the 3rd receiving element 904 receives to user terminal.
When business datum is not preserved in 802 judgements of first judging unit, then can trigger second transmitting element 903 and send service request to CDN, then CDN can feed back and these service request corresponding service data, the 3rd receiving element 904 can receive this business datum from CDN, and the 3rd transmitting element 905 can send the business datum that the 3rd receiving element 904 receives to user terminal afterwards.
In the present embodiment, this medium processing device can further include:
Acquiring unit 906 is used to obtain the interface-free resources information and/or the resource information of sub-district, described user terminal place;
When medium processing device determines to preserve business datum, or after CDN gets access to business datum, acquiring unit 906 can obtain the interface-free resources information of sub-district, user terminal place and/or the NodeB resource information to RNC, promptly can obtain the interface-free resources information of sub-district, user terminal place, perhaps, obtain the resource information of NodeB, perhaps, obtain the interface-free resources information of sub-district, user terminal place and NodeB resource information to RNC to RNC.
Need to prove that acquiring unit 906 can get access to these information from RNC, also can get access to these information, specifically do not do qualification herein from other network elements of wireless access network.
Acquiring unit 906 gets access to after interface-free resources information and/or the resource information, data processing unit 907 can carry out content adaptation and/or code stream selection to business datum, promptly can carry out content adaptation, perhaps, can carry out code stream selection, perhaps, also can carry out content adaptation and code stream selection.
In the present embodiment, this medium processing device can further include:
The 4th receiving element 902 is used for obtaining subscriber policy from the PCRF entity.
Above the medium processing device in the embodiment of the invention is described, introduces CDN below, see also Figure 10, the object lesson of the CDN of the embodiment of the invention comprises:
Service request receiving element 1001 is used to receive the service request that business platform sends;
Be redirected unit 1003, be used for user terminal is redirected to medium processing device.
In the present embodiment, when but the service request corresponding service data of user terminal are cache contents, business platform sends service request to the service request receiving element 1001 of CDN, after service request receiving element 1001 receives service request, information query unit 1002 can be obtained the information of the medium processing device of user terminal correspondence, and this medium processing device is positioned at the wireless access network at user terminal place.
Need to prove, the information of this medium processing device can be the positional information of medium processing device, in actual applications, for example, information query unit 1002 can be inquired about the medium processing device that obtains the user terminal correspondence from the information that preserve this locality information, perhaps also can inquire the information of the medium processing device of user terminal correspondence to the PCRF entity, perhaps also can obtain from the SGSN inquiry, perhaps get access to the information of medium processing device, specifically do not do qualification herein by other approach.For example, if information from the medium processing device of PCRF entity inquiring user terminal correspondence, then PCRF can preserve user terminal IP address that RNC reports and the binding relationship of RNC, the RNC at user terminal place can be obtained according to above-mentioned binding information, and then the information of the medium processing device of user terminal correspondence can be obtained according to the RNC at user terminal place.
After redirected unit 1003 was redirected to medium processing device with user terminal, this medium processing device can send business datum to user terminal by wireless access network.
In the present embodiment, be that the user terminal of cache contents is redirected to medium processing device with business datum, make medium processing device in wireless access network, send business datum to user terminal but be redirected unit 1003.
Above embodiment has introduced medium processing device and CDN respectively, introduces the data transmission system of the mutual formation of each network element below, sees also Figure 11, and an object lesson of the data transmission system of the embodiment of the invention comprises:
This CDN1102 specifically is used for:
Receive the service request of the user terminal of business platform transmission, obtain the information of the medium processing device of this user terminal correspondence,, this user terminal is redirected to medium processing device according to the information of the medium processing device that obtains.
Receive the service request that described user terminal sends, judge whether to preserve the service request corresponding service data of reception, when preserving business datum, send business datum to user terminal;
The structure of the medium processing device 1101 in the present embodiment is identical with medium processing device structure and function that the embodiment shown in function and earlier figures 8 or 9 describes, repeats no more herein.
The structure of CDN1102 in the present embodiment is identical with the CDN structure and the function of function and aforementioned description embodiment illustrated in fig. 10, repeats no more herein.
In the present embodiment, this business datum that medium processing device 1101 directly will be preserved is sent to user terminal by wireless access network, because medium processing device is positioned at the wireless access network at user terminal place, make this business datum to transmit by core net, backbone transport networks again, thereby saved the flow of the bandwidth and the core net of backbone transport networks, reduce transmission cost, reduced traffic delay, promoted user experience;
Secondly, carry out the selection of the adaptive and/or code stream of content by medium processing device 1101, and medium processing device 1101 obtain the information of radio open resource from the RNC that belongs to wireless access network can be more promptly and accurately, thereby improved resource utilization.
The description of the equipment that application present device and system embodiment are described, the concrete operations that system carries out transfer of data and preceding method embodiment of the present invention is similar, repeats no more herein.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, this program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than a kind of data transmission method provided by the present invention, system and relevant device are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, therefore, this description should not be construed as limitation of the present invention.
Claims (15)
1. a data transmission method is characterized in that, comprising:
Medium processing device receives the service request that user terminal sends, and described medium processing device is positioned at the wireless access network at described user terminal place;
Described medium processing device judges whether to preserve described service request corresponding service data;
If described medium processing device is preserved described business datum, then described medium processing device sends described business datum to described user terminal.
2. data transmission method according to claim 1 is characterized in that, the service request that described medium processing device receives the user terminal transmission comprises before:
Described medium processing device received content distributing network CDN sends presets business datum, and the described business datum that presets is preserved.
3. data transmission method according to claim 1 is characterized in that, the service request that described medium processing device receives the user terminal transmission comprises before:
CDN receives the service request of the described user terminal of business platform transmission;
Described CDN obtains the information of the described medium processing device of described user terminal correspondence;
Described CDN is redirected to described medium processing device with described user terminal.
4. data transmission method according to claim 1 is characterized in that,
If described medium processing device is not preserved described business datum, then described medium processing device sends described service request to CDN;
Described medium processing device receive described CDN that send with described service request corresponding service data;
Described medium processing device sends described business datum to described user terminal.
5. according to each described data transmission method in the claim 1 to 4, it is characterized in that described medium processing device comprised before described user terminal sends described business datum:
Described medium processing device obtains the interface-free resources information and/or the resource information of sub-district, described user terminal place;
Described medium processing device carries out content adaptation and/or code stream selection according to interface-free resources information and/or the resource information obtained to described business datum.
6. a data transmission method is characterized in that, comprising:
Content distributing network CDN receives the service request of the user terminal of business platform transmission;
Described CDN obtains the information of the medium processing device of described user terminal correspondence, and described medium processing device is positioned at the wireless access network at described user terminal place;
Described CDN is redirected to described medium processing device with described user terminal.
7. data transmission method according to claim 6 is characterized in that, comprises before the service request that described reception business platform sends:
Described CDN sends the business datum that presets to described medium processing device.
8. according to claim 6 or 7 described data transmission methods, it is characterized in that the information that described CDN obtains the medium processing device of described user terminal correspondence comprises:
Described CDN obtains the information of the corresponding medium processing device of described user terminal to strategy and the inquiry of charging rule functions PCRF entity.
9. according to claim 6 or 7 described data transmission methods, it is characterized in that, comprise before the service request of the user terminal that described reception business platform sends:
Described business platform receives the service request that described user terminal sends;
But whether the described service request corresponding service of described business platform judges data are cache contents;
If but cache contents, then described business platform sends described service request to described CDN.
10. a medium processing device is characterized in that, described medium processing device is positioned at the wireless access network at user terminal place, and described medium processing device comprises:
First receiving element is used to receive the service request that described user terminal sends;
First judging unit is used to judge whether to preserve the described service request corresponding service data that described first receiving element receives;
First transmitting element is used for sending described business datum to described user terminal when described business datum is preserved in described first judging unit judgement.
11. medium processing device according to claim 10 is characterized in that, described medium processing device also comprises:
Second receiving element is used for the business datum that presets that received content distributing network CDN sends, and the described business datum that presets is preserved.
12. medium processing device according to claim 10 is characterized in that, described medium processing device also comprises:
Second transmitting element is used for sending described service request to CDN when described business datum is not preserved in described first judging unit judgement;
The 3rd receiving element, be used to receive described CDN that send with described service request corresponding service data;
The 3rd transmitting element is used for sending the described business datum that described the 3rd receiving element receives to described user terminal.
13. medium processing device according to claim 10 is characterized in that, described medium processing device also comprises:
Acquiring unit is used to obtain the interface-free resources information and/or the resource information of sub-district, described user terminal place;
Data processing unit is used for according to interface-free resources information and/or the resource information obtained described business datum being carried out content adaptation and/or code stream selection.
14. a content distributing network CDN is characterized in that, comprising:
The service request receiving element is used to receive the service request of the user terminal that business platform sends;
Information query unit is used to obtain the information of the medium processing device of described user terminal correspondence, and described medium processing device is positioned at the wireless access network at described user terminal place;
Be redirected the unit, be used for the information obtained according to described information query unit, described user terminal is redirected to described medium processing device.
15. a data transmission system is characterized in that, comprising:
As each described medium processing device and CDN as claimed in claim 14 in the claim 10 to 13.
Priority Applications (2)
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| CN 201010254376 CN101917742B (en) | 2010-08-13 | 2010-08-13 | Data transmission method, equipment and system |
| PCT/CN2011/075202 WO2011144164A1 (en) | 2010-08-13 | 2011-06-02 | Method, apparatus and system for data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010254376 CN101917742B (en) | 2010-08-13 | 2010-08-13 | Data transmission method, equipment and system |
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| CN101917742A true CN101917742A (en) | 2010-12-15 |
| CN101917742B CN101917742B (en) | 2013-01-23 |
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| CN 201010254376 Expired - Fee Related CN101917742B (en) | 2010-08-13 | 2010-08-13 | Data transmission method, equipment and system |
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| CN (1) | CN101917742B (en) |
| WO (1) | WO2011144164A1 (en) |
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| CN101917742B (en) | 2013-01-23 |
| WO2011144164A1 (en) | 2011-11-24 |
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