CN104641655A - Terminal cache method, terminal and server - Google Patents

Terminal cache method, terminal and server Download PDF

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Publication number
CN104641655A
CN104641655A CN201380002646.7A CN201380002646A CN104641655A CN 104641655 A CN104641655 A CN 104641655A CN 201380002646 A CN201380002646 A CN 201380002646A CN 104641655 A CN104641655 A CN 104641655A
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China
Prior art keywords
video
local cache
cache
buffer memory
content
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CN201380002646.7A
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Chinese (zh)
Inventor
张力学
熊春山
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The embodiment of the invention provides a terminal cache method comprising steps of receiving video playing requests triggered by a user and comparing a uniform resource locator (URL) of a video and a local cache URL. If the uniform resource locator (URL) of the video is identical to the local cache URL, a local cache buffers the video, plays part content of the video, requests the rest content of the video from a main cache or a content provider (CP), and receives and plays the rest content of the video sent by the main cache or the CP, so that video clips are buffered by the local cache. When the user triggers video playing, the clips of the video are firstly played, and the rest content of the video is requested to the server, so that a cache time during the video transmission in the early stage is reduced. The local cache only buffers the clips of the video, so that a mobile terminal can utilize limited storage space to buffer more video content, and the hit rate is improved.

Description

A kind of method of terminal buffers, terminal and server
Technical field
The present invention relates to Computer Cache field, especially a kind of method of terminal buffers, terminal and server.
Background technology
Along with the progressively maturation of mobile broadband, the Internet is from low bandwidth to high bandwidth, and high time delay is to low time delay, and mobile network's development is also like this.Compared to fixed network, mobile network resource is shared, the bandwidth that mobile network distributes is that all users occupy jointly, mobile network is by the bandwidth of the suitable each user of scheduling mechanism dynamic conditioning, but the network environment of mobile network is fast changing, transmission rate constantly changes, and the jitter causing mobile network strengthens.It is predicted that 70% of mobile network's transferring content in 2016 can be video data, how to optimize video data and become in the transmission of mobile network the problem that industry is concerned about very much.The TV set platform people in past can watch immediately after being switched to new program, but often switch primary video by the video access of network and access content and will cause the data buffering of a period of time, could watch after district to be buffered is full, need to be improved further namely to put to meet user the demand namely seen.
The obtain manner of legacy network content adopts typical client-server model (client-server), user by application layer protocols such as HTTP by Internet network to server request content, the request of server process user also responds to user, the benefit of this network architecture is that structure is simple, but shortcoming also clearly, all requests are all sent to server and go process, and the load of server and bandwidth is very large, clearly to the impact of backbone network also simultaneously.
Time more, user expects at once to start viewing when clicking certain video link, local cache mechanism is provided in order to meet this business experience needs, again because the size of local cache often has a definite limitation, local cache also has other purposes simultaneously, can not be used for buffer network content completely, therefore need to provide rational local cache mechanism to meet the pre-cache demand of user data and the problem of limited storage space.
Summary of the invention
Embodiments provide a kind of method of terminal buffers, be intended to delay problem when solving mobile terminal request displaying video and improve the hit rate of local Cache.
First aspect, a kind of method of terminal buffers, described method comprises:
Receive the playing request of user's triggering video;
Contrast the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory;
If video described in described local Cache buffer memory, plays the partial content of described video, and asks the remainder of described video to master cache Main Cache or content provider CP;
Receive and play the remainder of the described video that described Main Cache or described CP send.
In conjunction with first aspect, in the first possible implementation of first aspect, described method also comprises:
If during the full content of video described in local Cache buffer memory, then play the full content of described video.
Second aspect, a kind of terminal, described terminal comprises:
Receiving element, for receiving the playing request of user's triggering video;
Buffer unit, for after the playing request of receiving element receiver, video, contrasts the uniform resource position mark URL of described video and the URL of local cache Cache buffer memory, if identical, then and video described in described local Cache buffer memory;
Processing unit, if for described buffer unit local Cache buffer memory described in the partial content of video, then play described partial content, and ask the remainder of described video to master cache Main Cache or content provider CP;
Described receiving element, for receiving the remainder of the described video of described processing unit request;
Broadcast unit, for playing the remainder of the described video that described receiving element receives.
In conjunction with second aspect, in the first possible embodiment of second aspect, described terminal also comprises:
Processing unit one, during full content for video described in the local Cache buffer memory when described buffer unit, plays the full content of described video.
The third aspect, a kind of terminal, is characterized in that, described terminal comprises:
Receiver, for receiving the playing request of user's triggering video;
Processor, for the URL of the uniform resource position mark URL and local Cache buffer memory that contrast described video, if identical, then video described in described local Cache buffer memory;
Described processor, if for video described in described local Cache buffer memory, play the partial content of described video, and ask the remainder of described video to master cache Main Cache or content provider CP;
Described receiver, for receiving and playing the remainder of the described video that described Main Cache or described CP send.
In conjunction with the third aspect, in the first possible implementation of the third aspect, described processor, also for when the full content of video described in local Cache buffer memory, plays the full content of described video.
Compared with prior art, the embodiment of the present invention provides a kind of method of terminal buffers, by receiving the video playback request that user triggers, contrast the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory, if video described in described local Cache buffer memory, play the partial content of described video, and the remainder of described video is asked to master cache Main Cache or content provider CP, receive and play the remainder of the described video that described Main Cache or described CP send, thus the fragment realized at local Cache buffered video, when user triggers the described video of broadcasting, then first play the fragment of described video, and to the remainder of video described in server request, make buffer delay problem when reducing initial transmission video, simultaneously, because the fragment of local Cache only buffered video, mobile terminal is made to utilize limited memory space to cushion more video content, thus raising hit rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram of a kind of terminal buffers that the embodiment of the present invention provides;
Fig. 2 is the structure chart of a kind of two layers of CDN deployment that the embodiment of the present invention provides;
Fig. 3 is the structure drawing of device of a kind of terminal that the embodiment of the present invention provides;
Fig. 4 is the structure drawing of device of a kind of terminal that the embodiment of the present invention provides;
Fig. 5 is the structure drawing of device of a kind of terminal that the embodiment of the present invention provides.
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.
It is the method flow diagram of the method for a kind of terminal buffers that the embodiment of the present invention provides with reference to figure 1, Fig. 1.As shown in Figure 1, said method comprising the steps of:
Step 101, receives the playing request of user's triggering video;
Such as, on the mobile handset, user clicks some videos of Yoqoo page, then trigger the broadcasting of this video, after described cell phone receives the video playback request that user triggers, search for the fragment of local Cache whether this video of buffer memory, wherein, local Cache is the memory cell be placed in cell phone, for the data of buffer memory mobile terminal.
Step 102, contrasts the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then and video described in described local Cache buffer memory;
Concrete, contrast the URL(uniform resource locator) (Uniform Resource Locator, URL) of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory.
Step 103, if video described in described local Cache buffer memory, plays the partial content of described video, and asks the remainder of described video to master cache Main Cache or content provider CP;
Concrete, be the structure chart of a kind of two layers of CDN deployment that the embodiment of the present invention provides with reference to figure 2, Fig. 2.As shown in Figure 2, in subscriber equipment (User Equipment, UE), local Cache is increased, in order to the fragment of buffered video; When subscriber equipment receives video playback request, search for local Cache, when the fragment of video described in local cache, then first play the fragment of described video, and asked the remainder of described video to master cache or content provider (Content Provider, CP) by C-D interface, described remainder is issued to subscriber equipment by C-D by described master cache or CP, wherein, described C-D interface refers to the interface of data transmission link between mobile terminal and Main Cache.
As shown in Figure 2, master cache functional entity (Main Cache), the content of outside CP is taken from by the direct buffer memory of SGi-U interface, wherein, SGi-U interface is the interface of packet data gateway (Packet Data Network Gateway, PDN GW) and external network, in patent of the present invention, SGi-U interface is the interface of Main Cache and external network, and for transmitting data, SGi-C interface is used for transmitting control message.
Cache policy controlled entity (CPCF, Cache Policy Control Function), it mainly receives the request of the content caching of outside CP, and then order Main Cache and local Cache to carry out the buffer memory of related content, described local Cache refers to the UE Cache on UE.
Local Cache on UE, what mainly receive from Main Cache is data cached.
Wherein, the SGi-U of the interface between Main Cache and outside CP represents; It is an interface in logic, and this interface is actually a part for SGi/Gi interface function.
Interface between CPCF and outside CP, represents with SGi-C, and it is an interface in logic, and this interface can be a part for SGi/Gi interface function;
Interface between Main Cache and CPCF, represents with C-M, is the content that CPCF order Main Cache obtains outside CP, and is stored in the functions such as Main Cache;
Interface between Main Cache and local Cache, represents with C-D, and mainly local Cache obtains Main Cache in advance from the content that outside CP obtains, and is stored in the functions such as local Cache.
Step 104, receives and plays the remainder of the described video that described Main Cache or described CP send.
Concrete, with reference to the remainder of the video that figure 2, UE is sent by C-D interface CP, and play described remainder.
As a kind of optional embodiment, described method also comprises:
If during the full content of video described in local Cache buffer memory, then play the full content of described video.
Concrete, files in stream media such as video or audio frequency are generally cut into multiple fragment, the description of whole video file can be comprised at head H ead, in order to save the several fragment of head of memory space only buffered video file, can be supplied to user's viewing immediately when user watches this video, player removes Network Capture further part simultaneously.
Wherein, the description of video file comprises the detailed description information of whole video, such as, duration, code check, coded system etc., meanwhile, also comprise the positional information of following resource, if during the duration of whole video 40 minutes, if mobile terminal is buffer memory 2 minutes contents only, then the stored position information obtaining whole video subsequent file by read head Head just can obtain the residue content of whole video further.
The embodiment of the present invention provides a kind of method of terminal buffers, by receiving the video playback request that user triggers, contrast the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory, if video described in described local Cache buffer memory, play the partial content of described video, and the remainder of described video is asked to master cache Main Cache or content provider CP, receive and play the remainder of the described video that described Main Cache or described CP send, thus the fragment realized at local Cache buffered video, when user triggers the described video of broadcasting, then first play the fragment of described video, and to the remainder of video described in server request, make buffer delay problem when reducing initial transmission video, simultaneously, because the fragment of local Cache only buffered video, mobile terminal is made to utilize limited memory space to cushion more video content, thus raising hit rate.Being combined with mobile network by CDN can the distribution of expedited data especially video data effectively, have been furthered the distance of content and user by CDN.But when user clicks some videos, subscriber equipment (User Equipment, UE) still needs a period of time to obtain data from CDN, also namely user will wait for that video playback cushions, and cannot realize namely putting the Consumer's Experience namely seen.
With reference to the structure drawing of device that figure 3, Fig. 3 is a kind of terminal that the embodiment of the present invention provides.As shown in Figure 3, described terminal comprises with lower unit:
Receiving element 301, for receiving the playing request of user's triggering video;
Such as, on the mobile handset, user clicks some videos of Yoqoo page, then trigger the broadcasting of this video, after described cell phone receives the video playback request that user triggers, search for the fragment of local Cache whether this video of buffer memory, wherein, local Cache is the memory cell be placed in cell phone, for the data of buffer memory mobile terminal.
Buffer unit 302, for after the playing request of receiving element receiver, video, contrasts the uniform resource position mark URL of described video and the URL of local cache Cache buffer memory, if identical, then and video described in described local Cache buffer memory;
Concrete, contrast the URL(uniform resource locator) (Uniform Resource Locator, URL) of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory.
Processing unit 303, if for described buffer unit local Cache buffer memory described in the partial content of video, then play described partial content, and ask the remainder of described video to master cache Main Cache or content provider CP;
Concrete, be the structure chart of a kind of two layers of CDN deployment that the embodiment of the present invention provides with reference to figure 2, Fig. 2.As shown in Figure 2, in subscriber equipment (User Equipment, UE), local Cache is increased, in order to the fragment of buffered video; When subscriber equipment receives video playback request, search for local Cache, when the fragment of video described in local cache, then first play the fragment of described video, and asked the remainder of described video to master cache or content provider (Content Provider, CP) by C-D interface, described remainder is issued to subscriber equipment by C-D by described master cache or CP, wherein, described C-D interface refers to the interface of data transmission link between mobile terminal and Main Cache.
As shown in Figure 2, master cache functional entity (Main Cache), the content of outside CP is taken from by the direct buffer memory of SGi-U interface, wherein, SGi-U interface is the interface of packet data gateway (Packet Data Network Gateway, PDN GW) and external network, in patent of the present invention, SGi-U interface is the interface of Main Cache and external network, and for transmitting data, SGi-C interface is used for transmitting control message.
Cache policy controlled entity (CPCF, Cache Policy Control Function), it mainly receives the request of the content caching of outside CP, and then order Main Cache and local Cache to carry out the buffer memory of related content, described local Cache refers to the UE Cache on UE.
Local Cache on UE, what mainly receive from Main Cache is data cached.
Wherein, the SGi-U of the interface between Main Cache and outside CP represents; It is an interface in logic, and this interface is actually a part for SGi/Gi interface function.
Interface between CPCF and outside CP, represents with SGi-C, and it is an interface in logic, and this interface can be a part for SGi/Gi interface function;
Interface between Main Cache and CPCF, represents with C-M, is the content that CPCF order Main Cache obtains outside CP, and is stored in the functions such as Main Cache;
Interface between Main Cache and local Cache, represents with C-D, and mainly local Cache obtains Main Cache in advance from the content that outside CP obtains, and is stored in the functions such as local Cache.
Described receiving element 301, for receiving the remainder of the described video of described processing unit request;
Broadcast unit 304, for playing the remainder of the described video that described receiving element receives.
Concrete, with reference to the remainder of the video that figure 2, UE is sent by C-D interface CP, and play described remainder.
As a kind of optional embodiment, described terminal also comprises:
Processing unit one, during full content for video described in the local Cache buffer memory when described buffer unit, plays the full content of described video.
Concrete, files in stream media such as video or audio frequency are generally cut into multiple fragment, the description of whole video file can be comprised at head H ead, in order to save the several fragment of head of memory space only buffered video file, can be supplied to user's viewing immediately when user watches this video, player removes Network Capture further part simultaneously.
Wherein, the description of video file comprises the detailed description information of whole video, such as, duration, code check, coded system etc., meanwhile, also comprise the positional information of following resource, if during the duration of whole video 40 minutes, if mobile terminal is buffer memory 2 minutes contents only, then the stored position information obtaining whole video subsequent file by read head Head just can obtain the residue content of whole video further.
The embodiment of the present invention provides a kind of terminal, by receiving the video playback request that user triggers, contrast the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory, if video described in described local Cache buffer memory, play the partial content of described video, and the remainder of described video is asked to master cache Main Cache or content provider CP, receive and play the remainder of the described video that described Main Cache or described CP send, thus the fragment realized at local Cache buffered video, when user triggers the described video of broadcasting, then first play the fragment of described video, and to the remainder of video described in server request, make buffer delay problem when reducing initial transmission video, simultaneously, because the fragment of local Cache only buffered video, mobile terminal is made to utilize limited memory space to cushion more video content, thus raising hit rate.Being combined with mobile network by CDN can the distribution of expedited data especially video data effectively, have been furthered the distance of content and user by CDN.But when user clicks some videos, subscriber equipment (User Equipment, UE) still needs a period of time to obtain data from CDN, also namely user will wait for that video playback cushions, and cannot realize namely putting the Consumer's Experience namely seen.
With reference to the structure drawing of device that figure 4, Fig. 4 is a kind of terminal that the embodiment of the present invention provides.As shown in Figure 4, described terminal comprises with lower unit:
Receiver 401, for receiving the playing request of user's triggering video;
Processor 402, for the URL of the uniform resource position mark URL and local Cache buffer memory that contrast described video, if identical, then video described in described local Cache buffer memory;
Described processor 402, if for video described in described local Cache buffer memory, play the partial content of described video, and ask the remainder of described video to master cache Main Cache or content provider CP;
Described receiver 401, for receiving and playing the remainder of the described video that described Main Cache or described CP send.
As a kind of optional embodiment, described processor, also for when the full content of video described in local Cache buffer memory, plays the full content of described video.
With reference to the structure drawing of device that figure 5, Fig. 5 is a kind of terminal that the embodiment of the present invention provides.Be a kind of terminal 500 that the embodiment of the present invention provides with reference to figure 5, Fig. 5, the specific embodiment of the invention does not limit the specific implementation of described terminal.Described terminal 500 comprises:
Processor (processor) 501, communication interface (Communications Interface) 502, memory (memory) 503, bus 504.
Processor 501, communication interface 502, memory 503 completes mutual communication by bus 504.
Communication interface 502, for communicating with server;
Processor 501, for executive program.
Particularly, program can comprise program code, and described program code comprises computer-managed instruction.
Processor 501 may be a central processor CPU, or specific integrated circuit ASIC(Application Specific Integrated Circuit), or be configured to the one or more integrated circuits implementing the embodiment of the present invention.
Memory 503, for depositing program.Memory 603 may comprise high-speed RAM memory, still may comprise nonvolatile memory (non-volatile memory).Program specifically for:
Receive the playing request of user's triggering video;
Contrast the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory;
If video described in described local Cache buffer memory, plays the partial content of described video, and asks the remainder of described video to master cache Main Cache or content provider CP;
Receive and play the remainder of the described video that described Main Cache or described CP send.
Described method also comprises:
If during the full content of video described in local Cache buffer memory, then play the full content of described video.
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, described 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, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random access memory (Random Access Memory is called for short RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.

Claims (6)

1. a method for terminal buffers, is characterized in that, described method comprises:
Receive the playing request of user's triggering video;
Contrast the uniform resource position mark URL of described video and the URL of local Cache buffer memory, if identical, then video described in described local Cache buffer memory;
If video described in described local Cache buffer memory, plays the partial content of described video, and asks the remainder of described video to master cache Main Cache or content provider CP;
Receive and play the remainder of the described video that described Main Cache or described CP send.
2. method according to claim 1, is characterized in that, described method also comprises:
If during the full content of video described in local Cache buffer memory, then play the full content of described video.
3. a terminal, is characterized in that, described terminal comprises:
Receiving element, for receiving the playing request of user's triggering video;
Buffer unit, for after the playing request of receiving element receiver, video, contrasts the uniform resource position mark URL of described video and the URL of local cache Cache buffer memory, if identical, then and video described in described local Cache buffer memory;
Processing unit, if for described buffer unit local Cache buffer memory described in the partial content of video, then play described partial content, and ask the remainder of described video to master cache Main Cache or content provider CP;
Described receiving element, for receiving the remainder of the described video of described processing unit request;
Broadcast unit, for playing the remainder of the described video that described receiving element receives.
4. terminal according to claim 3, is characterized in that, described terminal also comprises:
Processing unit one, during full content for video described in the local Cache buffer memory when described buffer unit, plays the full content of described video.
5. a terminal, is characterized in that, described terminal comprises:
Receiver, for receiving the playing request of user's triggering video;
Processor, for the URL of the uniform resource position mark URL and local Cache buffer memory that contrast described video, if identical, then video described in described local Cache buffer memory;
Described processor, if for video described in described local Cache buffer memory, play the partial content of described video, and ask the remainder of described video to master cache Main Cache or content provider CP;
Described receiver, for receiving and playing the remainder of the described video that described Main Cache or described CP send.
6. terminal according to claim 5, is characterized in that,
Described processor, also for when the full content of video described in local Cache buffer memory, plays the full content of described video.
CN201380002646.7A 2013-04-07 2013-04-07 Terminal cache method, terminal and server Pending CN104641655A (en)

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