CN104902006A - Content access method, content distribution network base station of wireless access network and core content distribution network device - Google Patents
Content access method, content distribution network base station of wireless access network and core content distribution network device Download PDFInfo
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- CN104902006A CN104902006A CN201510181175.1A CN201510181175A CN104902006A CN 104902006 A CN104902006 A CN 104902006A CN 201510181175 A CN201510181175 A CN 201510181175A CN 104902006 A CN104902006 A CN 104902006A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 98
- 230000004044 response Effects 0.000 claims description 71
- 238000012546 transfer Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 6
- 230000011664 signaling Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract
The invention provides a content access method, a content distribution network base station of wireless access network and a core content distribution network device. The content access method comprises that a hypertext transmission protocol request from user equipment is received via transmission control protocol connection of the user equipment; based on the hypertext transmission protocol request, whether the content distribution network base station of wireless access network stores content corresponding to the hypertext transmission protocol request is determined; and based on the content corresponding to the hypertext transmission protocol request stored in the content distribution network base station of wireless access network, the content is transmitted to the user equipment via transmission control protocol connection. Thus, it is not required to transmit the request from the user equipment to the core content distribution network device, layout of a buffer mark server is not needed, the download speed is improved, and the cost of the buffer mark server can be saved.
Description
Technical field
The present invention relates to mechanics of communication, particularly relate to contents access method, wireless access network content distributing network base station and core content distributing network device.
Background technology
The develop rapidly of network transmission technology, the content making it possible to be provided by the Internet is more and more abundanter; Such as, user can read news by the Internet, listens to the music, and sees a film, downloading application software.For can more efficiently provide on user network content and reduce the burden of application server and save transmission (Backhual) bandwidth between wireless access network to core net, network-caching (Web Cache) technology is a kind of solution that may be utilized.
In detail, refer to Fig. 1, it illustrates the structure chart of content access system, for ease of understanding, this content access system is through simplifying, UMTS represents Universal Mobile Telecommunications System (Universal Mobile Telecommunications System), and LTE represents Long Term Evolution (LTE, Long Term Evolution) system.By disposing caching edges (Cache Edge) node (i.e. caching edges server 13) at wireless access network (RAN); Cache tag (Cache Token) server 15 is disposed in core net (PS Core), at Gateway GPRS Support node (GGSN, Gateway GPRS Support Node) 17 or PDN Gateway (PGW, Packet Data Network Gateway) 19 exit dispose buffer memory core node (i.e. buffer memory Core server 1a).
General principle is, the copy of content of application server 2 can be buffered in buffer memory Core server 1a and caching edges server 13, buffer memory Core server 1a determines copy of content after caching edges server 13 buffer memory, just in transmission control protocol option (TCP Option) field, mark is increased, notice cache tag server 15 carries out TCP load (payload) and replaces, the TCP load of hit cache contents uses the mark server (token) of several byte to replace by cache tag server 15, find the original contents copy of buffer memory at caching edges server 13 according to mark server info at caching edges server 13, to restore the TCP load be replaced, and then be sent to subscriber equipment 21.
Only, though current existing access to content technology can reduce the burden of application server and save transmission bandwidth between wireless access network to core net, but caching edges server 13 needs to wait for that the TCP message of buffer memory Core server 1a sends to subscriber equipment 21 after reducing again, therefore subscriber equipment 21 speed of download does not further improve; Moreover existing access to content technology need dispose the node of the three types such as buffer memory Core server 1a, cache tag server 5 and buffer memory Edge Server 13, and cost is higher.
Summary of the invention
A kind of less cloth is the object of the present invention is to provide to build up this and speed of download content access system faster.
For reaching above-mentioned purpose, first embodiment of the invention provides the contents access method for the first wireless access network content distributing network base station, the transmission control protocol comprising: Tong Guo With subscriber equipment connects, and receives the hypertext transfer protocol requests from described subscriber equipment; Based on described hypertext transfer protocol requests, judge whether described wireless access network content distributing network base station stores the content corresponding with described hypertext transfer protocol requests; And have the content corresponding with described hypertext transfer protocol requests based on described first wireless access network content distributing network base station stored, connected by described transmission control protocol, send described content to described subscriber equipment.
In conjunction with the first embodiment, plant in the first possible implementation another, described contents access method comprises further: by the outer message of out-band channel transmit band to core content distributing network device, to notify described core content distributing network device, described first wireless access network content distributing network base station connects the described content of transmission to described subscriber equipment by described transmission control protocol.
In conjunction with the first embodiment, plant in the second possible implementation another, described contents access method comprises further: do not store the content corresponding with described hypertext transfer protocol requests based on described first wireless access network content distributing network base station, sends conversation shift request to described core content distributing network device by described out-band channel; In response to the transmission of described conversation shift request, the conversation shift received from described core content distributing network device by described out-band channel is responded; And respond based on described conversation shift, stopping continues is connected with the described transmission control protocol of described subscriber equipment.
In conjunction with the first embodiment, plant in the 3rd possible implementation another, described contents access method comprises further: after the described content of transmission, receive the conversation shift request from described core content distributing network device by described out-band channel; Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And in response to described conversation shift request, conversation shift response is sent to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to another wireless access network content distributing network base station, and another wireless access network content distributing network base station described is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
In conjunction with the first embodiment, plant in the 4th possible implementation another, the described content of described transmission comprises further to the step of described subscriber equipment: connected by described transmission control protocol, transmits the Part I of described content to described subscriber equipment; And the signal range of the second wireless access network content distributing network base station is moved in response to described subscriber equipment, transmit the Part II of described content to described second wireless access network content distributing network base station, transmit the Part II of described content to described subscriber equipment to make described second wireless access network content distributing network base station.
In conjunction with the first embodiment and the 4th implementation, plant in the 5th possible implementation another, described contents access method comprises further: in transmitting the Part II of described content to described subscriber equipment, receive the conversation shift request from described core content distributing network device by described out-band channel; Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And send conversation shift response to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to described second wireless access network content distributing network base station, and described second wireless access network content distributing network base station is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
For reaching above-mentioned purpose, second embodiment of the invention provides a kind of contents access method for core content distributing network device, comprise: receive from the conversation shift request of wireless access network content distributing network base station by out-band channel, wherein said conversation shift request is sent out because described wireless access network content distributing network base station does not store content that subscriber equipment asks; Based on described conversation shift request, set up and be connected with the transmission control protocol of described subscriber equipment; After setting up the connection of described transmission control protocol, conversation shift response is sent to described wireless access network content distributing network base station by described out-band channel, to make described wireless access network content distributing network base station respond based on described conversation shift, stopping continues is connected with the described transmission control protocol of subscriber equipment; And connected by described transmission control protocol, send content that described subscriber equipment asks to subscriber equipment.
For reaching above-mentioned purpose, third embodiment of the invention provides a kind of contents access method for core content distributing network device, comprise: connected by transmission control protocol, receive the acknowledge message from the second wireless access network content distributing network base station, wherein said acknowledge message is for confirming that subscriber equipment has received asked full content; Based on described acknowledge message, judge described subscriber equipment by the first wireless access network content distributing network base station movement extremely described second wireless access network content distributing network base station; Based on described judgement, send conversation shift request to the first wireless access network content distributing network base station by described out-band channel; In response to the transmission of described conversation shift request, the conversation shift received from described first wireless access network content distributing network base station by described out-band channel is responded; And forward the response of described conversation shift to described second wireless access network content distributing network base station by described out-band channel, be connected with the transmission control protocol of described subscriber equipment based on described conversation shift response foundation to make described second wireless access network content distributing network base station.
For reaching above-mentioned purpose, fourth embodiment of the invention provides a kind of first wireless access network content distributing network base station, comprising: communicator, for being connected through with the transmission control protocol of subscriber equipment, receiving the hypertext transfer protocol requests from described subscriber equipment; And processor, for based on described hypertext transfer protocol requests, judge whether described wireless access network content distributing network base station stores the content corresponding with described hypertext transfer protocol requests; Wherein, described communicator is further used for there be the content corresponding with described hypertext transfer protocol requests based on described first wireless access network content distributing network base station stored, is connected by described transmission control protocol, sends described content to described subscriber equipment.
In conjunction with the 4th embodiment, plant in the first possible implementation another, described communicator is further used for: by the outer message of out-band channel transmit band to core content distributing network device, to notify described core content distributing network device, described first wireless access network content distributing network base station connects the described content of transmission to described subscriber equipment by described transmission control protocol.
In conjunction with the 4th embodiment, plant in the second possible implementation another, described communicator is further used for: do not store the content corresponding with described hypertext transfer protocol requests based on described wireless access network content distributing network base station, sends conversation shift request to described core content distributing network device by described out-band channel; In response to the transmission of described conversation shift request, the conversation shift received from described core content distributing network device by described out-band channel is responded; And respond based on described conversation shift, stopping continues is connected with the described transmission control protocol of described subscriber equipment.
In conjunction with the 4th embodiment, plant in the 3rd possible implementation another, described communicator is further used for: after the described content of transmission, receive the conversation shift request from described core content distributing network device by described out-band channel; Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And in response to described conversation shift request, conversation shift response is sent to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to another wireless access network content distributing network base station, and another wireless access network content distributing network base station described is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
In conjunction with the 4th embodiment, plant in the 4th possible implementation another, described communicator is further used for: connected by described transmission control protocol, transmits the Part I of described content to described subscriber equipment; And the signal range of the second wireless access network content distributing network base station is moved in response to described subscriber equipment, transmit the Part II of described content to described second wireless access network content distributing network base station, transmit the Part II of described content to described subscriber equipment to make described second wireless access network content distributing network base station.
In conjunction with the 5th embodiment and the 4th implementation, plant in the 5th possible implementation another, described communicator is further used for: in transmitting the Part II of described content to described subscriber equipment, receive the conversation shift request from described core content distributing network device by described out-band channel; Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And send conversation shift response to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to described second wireless access network content distributing network base station, and described second wireless access network content distributing network base station is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
For reaching above-mentioned purpose, fifth embodiment of the invention provides a kind of core content distributing network device, comprise: communicator, for receiving from the conversation shift request of wireless access network content distributing network base station by out-band channel, wherein said conversation shift request is sent out because described wireless access network content distributing network base station does not store content that subscriber equipment asks; And processor, for based on described conversation shift request, set up and be connected with the transmission control protocol of described subscriber equipment; Wherein, described processor is further used for after setting up the connection of described transmission control protocol, conversation shift response is sent to described wireless access network content distributing network base station by described out-band channel, respond based on described conversation shift to make described wireless access network content distributing network base station, stopping continues is connected with the described transmission control protocol of subscriber equipment, and described processor is further used for being connected by described transmission control protocol, send content that described subscriber equipment asks to subscriber equipment.
For reaching above-mentioned purpose, fifth embodiment of the invention provides a kind of core content distributing network device, comprise: communicator, for being connected by transmission control protocol, receive the acknowledge message from the second wireless access network content distributing network base station, wherein said acknowledge message is for confirming that subscriber equipment has received asked full content; And processor, for based on described acknowledge message, judge that described subscriber equipment has been moved to the range of signal of described second wireless access network content distributing network base station by the range of signal of the first wireless access network content distributing network base station; Wherein, described communicator is further used for: the range of signal having been moved to described second wireless access network content distributing network base station based on described subscriber equipment by the range of signal of the first wireless access network content distributing network base station, sends conversation shift request to described subscriber equipment by out-band channel; In response to the transmission of described conversation shift request, the conversation shift received from described first wireless access network content distributing network base station by described out-band channel is responded; And forward the response of described conversation shift to described second wireless access network content distributing network base station by described out-band channel, be connected with the transmission control protocol of described subscriber equipment based on described conversation shift response foundation to make described second wireless access network content distributing network base station.
In sum, the wireless access network content distributing network base station of the present embodiment can directly to subscriber equipment the request (such as HTTP request) sent out process, as subscriber equipment the content of being asked can find in wireless access network content distributing network base station, just directly subscriber equipment can be sent to by wireless access network content distributing network base station, need not again by subscriber equipment the request sent out deliver to core content distributing network device 27, accordingly, cache tag server apparatus can no longer be built by cloth, promote speed of download to reach and save the cost that cache tag server built by cloth.
Accompanying drawing explanation
Fig. 1 is the structure chart of content access system;
Fig. 2 is the structure chart of the content access system according to first embodiment of the invention;
Fig. 3 is the structure chart of the wireless access network content distributing network base station according to first embodiment of the invention;
Fig. 4 is the structure chart of the core content distributing network device according to first embodiment of the invention;
Figure 5 Zhi Fig. 8 is signaling process figure of the content access system according to first embodiment of the invention;
Fig. 9 is the hardware configuration schematic diagram of the wireless access network content distributing network base station according to one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Table 1 is the abbreviation relevant to follow-up each embodiment and Key Term definition list, please consult.
Table 1
Fig. 2 is the structure chart of a content access system of first embodiment of the invention, as shown in Figure 2, institute's content access system comprises subscriber equipment 21, wireless access network content distributing network base station 23 (can be considered caching edges server), gateway/PDN Gateway 25 and core content distributing network device 27 (can be considered buffer memory Core server).Subscriber equipment 21 can send content requests (such as asking a video) to wireless access network content distributing network base station 23, wireless access network content distributing network base station 23 will check whether the content storing subscriber equipment 21 and ask, if wireless access network content distributing network base station 23 stores the content that subscriber equipment 21 is asked, then can send to storage subscriber equipment 21, the communication of wireless access network content distributing network base station 23 and subscriber equipment 21 is connected by TCP reaches, but does not limit the application of the present embodiment with this.
If wireless access network content distributing network base station 23 does not store the content that storage subscriber equipment 21 is asked, then through out-band channel (as shown by the dash line in figure 2) by the conversation shift with subscriber equipment 21 to core content distributing network device 27, to make core content distributing network device 27 by wireless access network content distributing network base station 23 and gateway/PDN Gateway 25, the content that transmission subscriber equipment 21 is asked is to subscriber equipment 21.Below will be described in detail with Fig. 3 to Fig. 8.
Refer to Fig. 3, it is the structure chart of wireless access network content distributing network base station 23, as shown in Figure 3, wireless access network content distributing network base station 23 comprises communicator 231, processor 233, memory 235, power supply 237 and enters machine interface 239, and processor 233 is coupled to communicator 231, memory 235 and enters machine interface 239; Power supply 317 gives communicator 231, processor 233 for power supply and enters machine interface 239; Memory 235 can store the content, operating system and other application programs that are supplied to subscriber equipment 21; Enter machine interface 239 at least to connect for keyboard 239a and display screen 239b, communicator 231 is for the communication between wireless access network content distributing network base station 23 and other equipment/devices or communication network.
Refer to Fig. 4, it is the structure chart of core content distributing network device 27, as shown in Figure 4, core content distributing network device 27 comprises communicator 271, processor 273 and memory 275, processor 273 is coupled to communicator 271 and memory 275, communicator 271 is for the communication between core content distributing network device 27 and other equipment/devices or communication network, and memory 275 can store the content, operating system and other application programs that are supplied to subscriber equipment 21.For simplicity's sake, hereafter will only be described in the effect of content access system for subscriber equipment 21, wireless access network content distributing network base station 23 and core content distributing network device 27.
See also Fig. 5, it illustrates the signaling process figure of the content access system of first embodiment of the invention, and it is applicable to the content access system of Fig. 2.In step 301, subscriber equipment 21 sends the request of TCP synchronized links to wireless access network content distributing network base station 23, is connected with the TCP set up between subscriber equipment 21 with wireless access network content distributing network base station 23; In step 302, after the communicator 231 of wireless access network content distributing network base station 23 receives the request of TCP synchronized links, send the response of TCP synchronized links to subscriber equipment 21; In step 303, subscriber equipment 21, in response to the response of TCP synchronized links, sends TCP response to wireless access network content distributing network base station 23; After completing three-way handshake flow process through step 301 to step 303, the TCP between subscriber equipment 21 with wireless access network content distributing network base station 23 is connected and just can sets up.
In step 304, subscriber equipment 21 connects transmission HTML (Hypertext Markup Language) (HTTP by TCP, Hypertext Transfer Protocol) request to wireless access network content distributing network base station 23, with to wireless access network content distributing network base station 23 request content (such as asking a video).Specifically, with the angle of subscriber equipment 21, subscriber equipment 21 thinks that HTTP request will be sent to core content distributing network device 27, in order to increase the efficiency of content access system; In step 305, after the communicator 231 of wireless access network content distributing network base station 23 receives the HTTP request from subscriber equipment 21, the processor 233 of wireless access network content distributing network base station 23 based on HTTP request, will judge whether the memory 235 of wireless access network content distributing network base station 23 stores the content corresponding with HTTP request.
Memory 235 as wireless access network content distributing network base station 23 stores the content corresponding with HTTP request, in step 306, the communicator 231 of wireless access network content distributing network base station 23 passes through the outer message of outband channel transmit band to core content distributing network device 27, to notify that core content distributing network device 27, first wireless access network content distributing network base station 23 connects transmission content to subscriber equipment 21 by TCP; In step 307, the communicator 271 of core content distributing network device 27 receives the outer message of band by outband channel, and the information entrained by the outer message of band is recorded in memory 275.
Specifically, the outer message of band being sent to core content distributing network device 27 can comprise five-tuple information and wireless access network content distributing network base station 23 number information of IP stream, the five-tuple information that IP can flow by core content distributing network device 27 and wireless access network content distributing network base station 23 number information are recorded in memory 275, by this, core content distributing network device 27 just can learn it is connected and subscriber equipment 21 communication by TCP by wireless access network content distributing network base station 23 at present, namely current between wireless access network content distributing network base station 23 and subscriber equipment 21, connected by TCP and carry out a session.
Memory 235 as wireless access network content distributing network base station 23 stores the content corresponding with hypertext transfer protocol requests, in step 308, the communicator 231 of wireless access network content distributing network base station 23 connects the response of transmission HTTP request to subscriber equipment 21 by TCP; In step 309, the communicator 271 of wireless access network content distributing network base station 23 is connected by TCP, and the content that transmission subscriber equipment 21 is asked is to subscriber equipment 21.
The person of should be noted, step 306 need be implemented early than step 307, step 308 need be implemented early than step 309, such as, but step 306 there is no regular hour relation with the realization of step 307 and step 308 and step 309, and the time relationship realized can be: (step 308, step 306, step 307 and step 309) and (step 308, step 309, step 306 and step 307) etc.
Memory 235 as wireless access network content distributing network base station 23 does not store the content corresponding with HTTP request, refer to Fig. 6, it illustrates the signaling process figure of the content access system of first embodiment of the invention, and it is applicable to the content access system of Fig. 2.In step 310, the communicator 231 of wireless access network content distributing network base station 23 sends conversation shift request to core content distributing network device 27 by out-band channel, TCP link information (TCP-Socket-information), HTTP request (HTTP request) are carried in conversation shift request, with by the conversation shift with subscriber equipment 21 to core content distributing network device 27.
More particularly, TCP link information can including but not limited to the content of such as table 2, and the local terminal in table 2 refers to wireless access network content distributing network base station 23.
Table 2
In step 311, the communicator 271 of core content distributing network device 27 is by the conversation shift request of out-band channel reception from wireless access network content distributing network base station 23, the dialogue-based migration request of processor 273 of core content distributing network device 27, is set up by communicator 271 and is connected with the TCP of described subscriber equipment.In detail, conversation shift request comprises TCP link information, therefore core content distributing network device 27 can based on the contained every terms of information of table 2 with set up TCP with subscriber equipment 21 and be connected.
In step 312, processor 273, after setting up TCP connection, sends conversation shift response to wireless access network content distributing network base station 23 by communicator 271 and by out-band channel; In step 313, the conversation shift that the communicator 231 of wireless access network content distributing network base station 23 is received from core content distributing network device 27 by out-band channel responds, and respond based on described conversation shift, stopping continues is connected with the TCP of subscriber equipment 21.
In step 314, because HTTP request is carried in conversation shift request, the processor 273 of core content distributing network device 27 will based on HTTP request, judge that the memory 275 of content distributing network device 27 stores the content corresponding with HTTP request, and store the content corresponding with HTTP request based on memory 275, send HTTP request response to subscriber equipment 21 by communicator 271; In step 315, processor 273 is by communicator 271 and by being connected with the TCP of subscriber equipment 21, and the content that transmission subscriber equipment 21 is asked is to subscriber equipment 21.
Next explanation wireless access network content distributing network base station 23 is stored the content that subscriber equipment 21 is asked, but subscriber equipment 21 is moved to the situation of the range of signal of wireless access network content distributing network base station 29 (the second wireless access network content distributing network base station) by the range of signal of wireless access network content distributing network base station 23 (the first wireless access network content distributing network base station).
Refer to Fig. 7, it illustrates the signaling process figure of the content access system of first embodiment of the invention, and it is applicable to the content access system of Fig. 2.Continue aforementioned explanation, and in step 309, the communicator 271 of wireless access network content distributing network base station 23 is connected by TCP, and the content that transmission subscriber equipment 21 is asked is to subscriber equipment 21; After receiving content, in step 401, subscriber equipment 21 connects transmission acknowledge message by TCP, and wherein said acknowledge message is for representing that subscriber equipment 21 has received asked full content.
Due to after receiving the full content of asking and before sending acknowledge message, subscriber equipment 21 moves to the signal range of other wireless access network content distributing network base station (i.e. the second wireless access network content distributing network base station 29), therefore in step 402, wireless access network content distributing network base station 29 have received acknowledge message through TCP connection, and in the mode of TCP head extended field, the number information of wireless access network content distributing network base station 29 is added acknowledge message, and send comprise the number information of wireless access network content distributing network base station 29 confirm message to core content distributing network device 27.
In step 403, the communicator 271 of core content distributing network device 27 connects through TCP, receive the acknowledge message from wireless access network content distributing network base station 29, the number information of the wireless access network content distributing network base station 29 that processor 273 comprises according to acknowledge message, confirm that subscriber equipment 21 moves to wireless access network content distributing network base station 29 by wireless access network content distributing network base station 23, and send conversation shift request to wireless access network content distributing network base station 23 by out-band channel.
In detail, core content distributing network device 27 comprises the number information of wireless access network content distributing network base station 23 in the outer message of band that step 307 is noted down, accordingly, the number information of the wireless access network content distributing network base station 29 that the number information of the wireless access network content distributing network base station 23 that processor 273 just can store according to memory 275 and acknowledge message comprise, confirm that subscriber equipment 21 is moved to the range of signal of wireless access network content distributing network base station 29 by the range of signal of wireless access network content distributing network base station 23, and send conversation shift request to wireless access network content distributing network base station 23 by out-band channel.
In step 404, the communicator 231 of wireless access network content distributing network base station 23 passes through out-band channel, receive from the conversation shift request of core content distributing network device 27, the dialogue-based migration request of communicator 231, stopping continuing is connected with the TCP of subscriber equipment 21; In step 405, the communicator 231 of wireless access network content distributing network base station 23, in response to described conversation shift request, sends conversation shift response to core content distributing network device 27 by out-band channel.The person of should be noted, conversation shift response is herein including but not limited to the information of table 2.
In step 406, the communicator 271 of core content distributing network device 27 is in response to the transmission of conversation shift request, the conversation shift received from wireless access network content distributing network base station 23 by out-band channel is responded, and forwards conversation shift response to wireless access network content distributing network base station 29 by out-band channel; In step 407, wireless access network content distributing network base station 29 receives conversation shift response and sets up according to conversation shift response and is connected with the TCP of subscriber equipment 21; In step 408, the reception of the dialogue-based migration response in wireless access network content distributing network base station 29 and TCP establishment of connection, send response message to core content distributing network device 27 by outband channel; In step 409, wireless access network content distributing network base station 29 connects transmission http response to subscriber equipment 21 by TCP, and after this, the HTTP request that subscriber equipment 21 sends will be processed by wireless access network content distributing network base station 29.
Next explanation wireless access network content distributing network base station 23 is stored the content that subscriber equipment 21 is asked, but subscriber equipment 21 is not all receiving its content of asking, just moved to the situation of the range of signal of wireless access network content distributing network base station 29 (the second wireless access network content distributing network base station) by the range of signal of wireless access network content distributing network base station 23 (the first wireless access network content distributing network base station).
Refer to Fig. 8, it illustrates the signaling process figure of the content access system of first embodiment of the invention, and it is applicable to the content access system of Fig. 2.With the signaling process figure of Fig. 7 by contrast, step 309 will be replaced by step 309a, step 309b and step 309c.In step 309a, the communicator 231 of wireless access network content distributing network base station 23 connects through TCP, transmits the Part I of content to subscriber equipment 21; In step 309b, the signal range of wireless access network content distributing network base station 29 is moved in response to subscriber equipment 21, the communicator 231 of wireless access network content distributing network base station 23 send the Part II of content to wireless access network content distributing network base station 29, in step 309c, the signal range of wireless access network content distributing network base station 29 is moved in response to subscriber equipment 21, the Part II of content is transmitted to subscriber equipment 21 in wireless access network content distributing network base station 29, makes subscriber equipment 21 intactly can receive all the elements.Specifically, all can communicate with each other between each wireless access network content distributing network base station, therefore when subscriber equipment 21 moves to the signal range of wireless access network content distributing network base station 29, wireless access network content distributing network base station 23 also can learn that subscriber equipment 11 has moved to wireless access network content distributing network base station 29, just the Part II of content can be delivered to wireless access network content distributing network base station 29 through back-end network, then transmit the Part II of content to subscriber equipment 21 by wireless access network content distributing network base station 29.All illustrated in steps after the step 309c of Fig. 8 to be illustrated in Fig. 7 and relevant describe, do not add at this and repeat.
In sum, the wireless access network content distributing network base station of the present embodiment can directly to subscriber equipment the request (such as HTTP request) sent out process, as subscriber equipment the content of being asked can find in wireless access network content distributing network base station, just directly subscriber equipment can be sent to by wireless access network content distributing network base station, need not again by subscriber equipment the request sent out deliver to core content distributing network device 27, accordingly, cache tag server apparatus can no longer be built by cloth, promote speed of download to reach and save the cost that cache tag server built by cloth.
Fig. 9 is the hardware configuration schematic diagram of the wireless access network content distributing network base station 5 according to one embodiment of the invention.As shown in Figure 9, wireless access network content distributing network base station 5 comprises processor 51, memory 52, input/output interface 53, communication interface 54 and bus 55.Wherein, processor 51, memory 52, input/output interface 53 and communication interface 54 realize communication connection each other by bus 55.
Processor 51 can adopt general central processing unit (Central Processing Unit, CPU), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuit, for performing relative program, to realize the technical scheme that the embodiment of the present invention provides.
Memory 52 can be read-only memory (Read Only Memory, ROM), static storage device, dynamic memory or random access memory (Random Access Memory, RAM).Memory 52 can storage operation system and other application programs.When being realized the technical scheme that the embodiment of the present invention provides by software or firmware, the program code for realizing the technical scheme that the embodiment of the present invention provides is kept in memory 52, and is performed by processor 51.
Input/output interface 53 is for receiving data and the information of input, the data such as output function result.
Communication interface 54 uses the R-T unit such as but not limited to communicator and communication module one class, realizes the communication between wireless access network content distributing network base station 5 and other equipment or communication network.
Bus 55 can comprise a path, between wireless access network content distributing network base station 5 all parts (such as processor 51, memory 52, input/output interface 53 and communication interface 54), transmit information.
Should note, although the wireless access network content distributing network base station 5 shown in Fig. 9 illustrate only processor 51, memory 52, input/output interface 53, communication interface 54 and bus 55, but in specific implementation process, those skilled in the art it should be understood that wireless access network content distributing network base station 5 also comprises and realizes normal operation other devices necessary.Meanwhile, according to specific needs, those skilled in the art it should be understood that wireless access network content distributing network base station 5 also can comprise the hardware device realizing other additional functions.In addition, those skilled in the art it should be understood that wireless access network content distributing network base station 5 also can only comprise and realizes the necessary device of the embodiment of the present invention or module, and need not comprise the whole devices shown in Fig. 9.
Hardware configuration shown in Fig. 9 and foregoing description are applicable to various core content distributing network device that the embodiment of the present invention provides and subscriber equipment.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, above-mentioned program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, above-mentioned storage medium can be disk, CD, read-only store-memory body (ROM:Read-Only Memory) or random store-memory body (RAM:Random Access Memory) etc.
Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and thought thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1., for a contents access method for the first wireless access network content distributing network base station, it is characterized in that, comprising:
The transmission control protocol of Tong Guo With subscriber equipment connects, and receives the hypertext transfer protocol requests from described subscriber equipment;
Based on described hypertext transfer protocol requests, judge whether described wireless access network content distributing network base station stores the content corresponding with described hypertext transfer protocol requests; And
There is the content corresponding with described hypertext transfer protocol requests based on described first wireless access network content distributing network base station stored, connected by described transmission control protocol, send described content to described subscriber equipment.
2. contents access method as claimed in claim 1, is characterized in that, comprise further:
By the outer message of out-band channel transmit band to core content distributing network device, to notify described core content distributing network device, described first wireless access network content distributing network base station connects the described content of transmission to described subscriber equipment by described transmission control protocol.
3. contents access method as claimed in claim 1, is characterized in that, comprise further:
Do not store the content corresponding with described hypertext transfer protocol requests based on described first wireless access network content distributing network base station, send conversation shift request to described core content distributing network device by described out-band channel;
In response to the transmission of described conversation shift request, the conversation shift received from described core content distributing network device by described out-band channel is responded; And
Respond based on described conversation shift, stopping continues is connected with the described transmission control protocol of described subscriber equipment.
4. contents access method as claimed in claim 1, is characterized in that, comprise further:
After the described content of transmission, receive the conversation shift request from described core content distributing network device by described out-band channel;
Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And
In response to described conversation shift request, conversation shift response is sent to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to another wireless access network content distributing network base station, and another wireless access network content distributing network base station described is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
5. contents access method as claimed in claim 1, is characterized in that, the described content of described transmission comprises further to the step of described subscriber equipment:
Connected by described transmission control protocol, transmit the Part I of described content to described subscriber equipment; And
The signal range of the second wireless access network content distributing network base station is moved in response to described subscriber equipment, transmit the Part II of described content to described second wireless access network content distributing network base station, transmit the Part II of described content to described subscriber equipment to make described second wireless access network content distributing network base station.
6. contents access method as claimed in claim 5, is characterized in that, comprise further:
In transmitting the Part II of described content to described subscriber equipment, receive the conversation shift request from described core content distributing network device by described out-band channel;
Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And
Conversation shift response is sent to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to described second wireless access network content distributing network base station, and described second wireless access network content distributing network base station is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
7. for a contents access method for core content distributing network device, it is characterized in that, comprising:
Receive from the conversation shift request of wireless access network content distributing network base station by out-band channel, wherein said conversation shift request is sent out because described wireless access network content distributing network base station does not store content that subscriber equipment asks;
Based on described conversation shift request, set up and be connected with the transmission control protocol of described subscriber equipment;
After setting up the connection of described transmission control protocol, conversation shift response is sent to described wireless access network content distributing network base station by described out-band channel, to make described wireless access network content distributing network base station respond based on described conversation shift, stopping continues is connected with the described transmission control protocol of subscriber equipment; And
Connected by described transmission control protocol, send content that described subscriber equipment asks to subscriber equipment.
8. for a contents access method for core content distributing network device, it is characterized in that, comprising:
Connected by transmission control protocol, receive the acknowledge message from the second wireless access network content distributing network base station, wherein said acknowledge message is for confirming that subscriber equipment has received asked full content;
Based on described acknowledge message, judge described subscriber equipment by the first wireless access network content distributing network base station movement extremely described second wireless access network content distributing network base station;
Based on described judgement, send conversation shift request to the first wireless access network content distributing network base station by described out-band channel;
In response to the transmission of described conversation shift request, the conversation shift received from described first wireless access network content distributing network base station by described out-band channel is responded; And
Forward the response of described conversation shift to described second wireless access network content distributing network base station by described out-band channel, be connected with the transmission control protocol of described subscriber equipment based on described conversation shift response foundation to make described second wireless access network content distributing network base station.
9. a first wireless access network content distributing network base station, is characterized in that, comprising:
Communicator, for being connected through with the transmission control protocol of subscriber equipment, receives the hypertext transfer protocol requests from described subscriber equipment; And
Processor, for based on described hypertext transfer protocol requests, judges whether described wireless access network content distributing network base station stores the content corresponding with described hypertext transfer protocol requests;
Wherein, described communicator is further used for there be the content corresponding with described hypertext transfer protocol requests based on described first wireless access network content distributing network base station stored, is connected by described transmission control protocol, sends described content to described subscriber equipment.
10. the first wireless access network content distributing network base station as claimed in claim 9, it is characterized in that, described communicator is further used for:
By the outer message of out-band channel transmit band to core content distributing network device, to notify described core content distributing network device, described first wireless access network content distributing network base station connects the described content of transmission to described subscriber equipment by described transmission control protocol.
11. first wireless access network content distributing network base stations as claimed in claim 9, it is characterized in that, described communicator is further used for:
Do not store the content corresponding with described hypertext transfer protocol requests based on described wireless access network content distributing network base station, send conversation shift request to described core content distributing network device by described out-band channel;
In response to the transmission of described conversation shift request, the conversation shift received from described core content distributing network device by described out-band channel is responded; And
Respond based on described conversation shift, stopping continues is connected with the described transmission control protocol of described subscriber equipment.
12. first wireless access network content distributing network base stations as claimed in claim 9, it is characterized in that, described communicator is further used for:
After the described content of transmission, receive the conversation shift request from described core content distributing network device by described out-band channel;
Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And
In response to described conversation shift request, conversation shift response is sent to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to another wireless access network content distributing network base station, and another wireless access network content distributing network base station described is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
13. first wireless access network content distributing network base stations as claimed in claim 9, it is characterized in that, described communicator is further used for:
Connected by described transmission control protocol, transmit the Part I of described content to described subscriber equipment; And
The signal range of the second wireless access network content distributing network base station is moved in response to described subscriber equipment, transmit the Part II of described content to described second wireless access network content distributing network base station, transmit the Part II of described content to described subscriber equipment to make described second wireless access network content distributing network base station.
14. first wireless access network content distributing network base stations as claimed in claim 13, it is characterized in that, described communicator is further used for:
In transmitting the Part II of described content to described subscriber equipment, receive the conversation shift request from described core content distributing network device by described out-band channel;
Based on described conversation shift request, stopping continues is connected with the described transmission control protocol of described subscriber equipment; And
Conversation shift response is sent to described core content distributing network device by described out-band channel, wherein said core content distributing network device forwards the response of described conversation shift to described second wireless access network content distributing network base station, and described second wireless access network content distributing network base station is set up described transmission control protocol according to described conversation shift response with described subscriber equipment and is connected.
15. 1 kinds of core content distributing network devices, is characterized in that, comprising:
Communicator, for receiving from the conversation shift request of wireless access network content distributing network base station by out-band channel, wherein said conversation shift request is sent out because described wireless access network content distributing network base station does not store content that subscriber equipment asks; And
Processor, for based on described conversation shift request, sets up and is connected with the transmission control protocol of described subscriber equipment;
Wherein, described processor is further used for after setting up the connection of described transmission control protocol, conversation shift response is sent to described wireless access network content distributing network base station by described out-band channel, respond based on described conversation shift to make described wireless access network content distributing network base station, stopping continues is connected with the described transmission control protocol of subscriber equipment, and described processor is further used for being connected by described transmission control protocol, send content that described subscriber equipment asks to subscriber equipment.
16. 1 kinds of core content distributing network devices, is characterized in that, comprising:
Communicator, for being connected by transmission control protocol, receive the acknowledge message from the second wireless access network content distributing network base station, wherein said acknowledge message is for confirming that subscriber equipment has received asked full content; And
Processor, for based on described acknowledge message, judges that described subscriber equipment has been moved to the range of signal of described second wireless access network content distributing network base station by the range of signal of the first wireless access network content distributing network base station;
Wherein, described communicator is further used for:
Moved to the range of signal of described second wireless access network content distributing network base station based on described subscriber equipment by the range of signal of the first wireless access network content distributing network base station, send conversation shift request to described subscriber equipment by out-band channel;
In response to the transmission of described conversation shift request, the conversation shift received from described first wireless access network content distributing network base station by described out-band channel is responded; And
Forward the response of described conversation shift to described second wireless access network content distributing network base station by described out-band channel, be connected with the transmission control protocol of described subscriber equipment based on described conversation shift response foundation to make described second wireless access network content distributing network base station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510181175.1A CN104902006A (en) | 2015-04-16 | 2015-04-16 | Content access method, content distribution network base station of wireless access network and core content distribution network device |
| PCT/CN2016/076773 WO2016165524A1 (en) | 2015-04-16 | 2016-03-18 | Content access method, wireless access network content distribution network base station and core content distribution network apparatus |
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| CN201510181175.1A CN104902006A (en) | 2015-04-16 | 2015-04-16 | Content access method, content distribution network base station of wireless access network and core content distribution network device |
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