CN105230074A

CN105230074A - Video cache switching handling method, device and system

Info

Publication number: CN105230074A
Application number: CN201480028962.6A
Authority: CN
Inventors: 郭书蕾; 郭书苞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-05-13
Filing date: 2014-05-13
Publication date: 2016-01-06
Anticipated expiration: 2034-05-13
Also published as: CN105230074B; WO2015172320A1

Abstract

A kind of video cache switching handling method, device and system.Source VOG constructs handoff response when terminal is switched to target BS from source base station, and what handoff response comprised that source VOG and video resource server set up first is connected and the information of the second controls transfer information be connected of setting up with terminal and video breakpoint; Source VOG sends handoff response by source base station and described target BS to target VOG, wherein, the first controls transfer information that is connected with second of controls transfer information connected is respectively used to set up on target VOG the transmission control context that the first connection is connected with second, and the information indicating target VOG of video breakpoint continues transmission of video resource from video breakpoint to terminal.Solve the video that terminal accesses in the handoff procedure of base station to be stopped, need to resend video request, cause the problem that Consumer's Experience effect declines.

Description

Video cache switching handling method, device and system

Technical field

The present embodiments relate to the communication technology, more particularly to a kind of video cache switching handling method, device and system.Background technology

As people are for the increasingly urgent of multimedia visit demand anywhere or anytime, mobile video demand is just being in explosive growth.But mobile broadband network is different from fixed network, Radio Access Network bandwidth stability is poor, there is video resource bottleneck, and multiple users share limited resources, cause when network carries out high amount of traffic distribution, the phenomenon of frequent interim card occurs when the broadcasting of video initializes buffer delay length, played.

In the wireless access side of network, the cache optimization (English of video is introduced:Video Optimize Gateway, hereinafter referred to as：VOG), the combination controlled by video optimized and RRM, effect is particularly evident in the environment of can improving the experience of video user, particularly small area jam.Realize to store the time of changing, it is wide with technology tape swapping.The video transmission efficiency of wireless network is lifted, service operation cost is reduced.

Due to introducing video cache optimization, when mobile terminal switches, it is necessary to which user sends video request again, Consumer's Experience effect is caused to decline.The content of the invention

The embodiment of the present invention provides a kind of video cache switching handling method, device and system, and to overcome when mobile terminal switches, user needs to send video request again, causes Consumer's Experience effect to decline.

First aspect present invention provides a kind of video cache switching handling method, including：

Source video optimization gateway VOG intercepts terminal and sets up connection request, the network address for setting up the network address and the terminal that connection request includes the video resource service device to what video resource service device was sent；

The source VOG sets up first with the terminal using the network address of the video resource service device and is connected, and the second company is set up using the network address and the video resource service device of the terminal Connect；

The source VOG receives the video request that the terminal is sent by the described first connection, according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal；

The source VOG receives the switching instruction that source base station is sent when the terminal is switched to target BS from the source base station；

The source VOG constructs handoff response, and the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection；

The source VOG sends the handoff response by the source base station and the target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint indicates that the target VOG continues the transmission video resource from the video breakpoint to the terminal.

In first aspect in the first possible implementation, the information of the video breakpoint, including：URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

URL of the video resource on the video resource service device, to the content time scope of the terminal transmission.

With reference to first aspect or first aspect the first possible implementation, in second of possible implementation of first aspect, it is described to obtain video resource corresponding with the video information, the video response for including the video resource is returned to the terminal, including：

Whether the source VOG inspections Check local caches have the video information included in the video request；

If inspection Check results are not have the video information included in the video request, the source

VOG sends the video request according to the video information included in the video request to the video resource service device, obtain and the video resource corresponding to the video information, and video response is returned to the terminal, the video response includes the video resource；

Or,

If it is to have the video information included in the video request to examine Check results, the source VOG The video response is returned to the terminal, the video response is included from local cache acquisition and the video resource corresponding to the video information.

With reference to first aspect to any possible implementation of second of implementation of first aspect, in first aspect in the third possible implementation, after the source VOG sends the handoff response by the source base station and the target BS to target VOG, in addition to：

The source VOG stops sending the video data of the video resource to the terminal, deletes first connection and the described second connection.

Second aspect of the present invention provides a kind of video cache switching handling method, including：

Source base station sends switching to source video optimization gateway VOG when terminal is switched to target BS from the source base station and indicated；

The source base station receives the switching response message that the source VOG is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The source base station sends the switching response message by the target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

Third aspect present invention provides a kind of video cache switching handling method, including：

Target BS receives the handoff response that source base station is sent when terminal is switched to the target BS from the source base station, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The target BS sends the switching response message to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues transmission from the video breakpoint to the terminal and regarded Frequency resource.

Fourth aspect present invention provides a kind of processing method of video cache switching, including：

Target VOG receives the handoff response that target BS is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The transmission that the target VOG sets up first connection and the second connection according to the transmission control information of the described first connection and the transmission control information of second connection controls context, is continued to transmit video resource to the terminal according to the information of the video breakpoint.

In fourth aspect in the first possible implementation, the information of the video breakpoint, including：URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

With reference to fourth aspect or fourth aspect the first possible implementation, in second of possible implementation of fourth aspect, the target VOG continues to transmit video resource according to the information of the video breakpoint to the terminal, including：

Whether the target VOG inspections Check local caches have the corresponding video information of information of the video breakpoint；

If inspection Check results are not have the video information, then the target VOG sends video request according to the information of the video breakpoint to video resource service device, obtain the video resource corresponding to the information with the video breakpoint, and video response is returned to terminal, the video response includes the video resource；

Or,

If inspection Check results is have the video information, the target VOG returns to video response to terminal, and the video response includes the video resource corresponding to the information with the video breakpoint obtained from local cache.

With reference to fourth aspect to any possible implementation of second of implementation of fourth aspect, In the third possible implementation of fourth aspect, after the target VOG continues transmission video resource according to the information of the video breakpoint to the terminal, in addition to：

The target VOG removes the connection that the first connection transmission control information, the second connection transmission control information and video resource service device and terminal according to included in the handoff response are set up after video playback terminates.

Fifth aspect present invention provides a kind of video optimized gateway, and the video optimized gateway is that source video optimizes gateway, including：

Blocking module, connection request is set up for intercepting terminal to what video resource service device was sent, described to set up the network address of the connection request comprising the video resource service device and the network address of the terminal；

Link block is set up, setting up first with the terminal for the network address using the video resource service device is connected, and setting up second with the video resource service device using the network address of the terminal is connected；

Acquisition module, for receiving the video request that the terminal is sent by the described first connection, according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal；

Receiving module, is indicated for receiving the switching that source base station is sent when the terminal is switched to target BS from the source base station；

Constructing module, for constructing handoff response, the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection；

Sending module, for sending the handoff response to target VOG by the source base station and the target BS, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint indicates that the target VOG continues the transmission video resource from the video breakpoint to the terminal.

In the first possible implementation in terms of the 5th, the information of the video breakpoint, including：URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

URL of the video resource on the video resource service device, to the terminal transmission Content time scope.

With reference to the 5th aspect or the 5th aspect the first possible implementation, the 5th aspect second of possible implementation in, the acquisition module, specifically for：

Whether inspection Check local caches have the video information included in video request；

If inspection Check results are not have the video information included in the video request, video request is then sent to video resource service device according to the video information included in video request, obtain and the video resource corresponding to the video information, and video response is returned to the terminal, the video response includes the video resource；

Or,

If it is to have the video information included in the video request to examine Check results, video response is returned to the terminal, the video response is included from local cache acquisition and the video resource corresponding to the video information.

With reference to the 5th aspect to the 5th second of possible implementation of aspect, in the third possible implementation in terms of the 5th, in addition to：

Removing module, after the handoff response being sent for the sending module to target VOG by the source base station and the target BS, stop sending the video data of the video resource to the terminal, delete first connection and the described second connection.

Sixth aspect present invention provides a kind of base station, and the base station is source base station, including：First sending module, is indicated for sending switching to source video optimization gateway VOG when terminal is switched to target BS from the source base station；

Receiving module, for receiving the switching response message that the source VOG is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Second sending module, for sending the switching response message to target VOG by the target BS, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal. Seventh aspect present invention provides a kind of base station, and the base station is target BS, including：Receiving module, for receiving the handoff response that source base station is sent when terminal is switched to the target BS from the source base station, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；Sending module, for sending the switching response message to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

Eighth aspect present invention provides a kind of video optimized gateway, and the video optimized gateway is target VOG, including：

Receiving module, the handoff response that target BS is sent is received for receiving the switching notice of target BS transmission, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Continue transport module, transmission control information for the transmission control information according to the described first connection and second connection sets up first connection and the transmission of the second connection controls context, is continued to transmit video resource to the terminal according to the information of the video breakpoint.

In eighth aspect in the first possible implementation, the information of the video breakpoint, including：URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

With reference to eighth aspect or eighth aspect the first possible implementation, in second of possible implementation of eighth aspect, the continuation transport module, specifically for：

Whether inspection Check local caches have the corresponding video information of information of the video breakpoint； If inspection Check results are not have the video information, video request is then sent to video resource service device according to the information of the video breakpoint, obtain the video resource corresponding to the information with the video breakpoint, and video response is returned to terminal, the video response includes the video resource；Or,

If inspection Check results is have the video information, video response is returned to terminal, the video response includes the video resource corresponding to the information with the video breakpoint obtained from local cache.

With reference to eighth aspect into second of implementation of eighth aspect any possible implementation, in eighth aspect in the third possible implementation, in addition to：

Module is removed, after terminating in video playback, the connection that the first connection transmission control information, the second connection transmission control information and video resource service device and terminal according to included in the handoff response are set up is removed.

Ninth aspect present invention provides a kind of video cache switching processing system, including：The video optimized gateway of video optimized gateway any one of 5th aspect to the 5th aspect the third mode in the cards, the base station described in the 6th aspect mode in the cards, base station and the eighth aspect described in the 7th aspect mode in the cards to eighth aspect any one of the third mode in the cards.

Video cache switching handling method of the embodiment of the present invention, device and system, switching response message is sent to the source base station when terminal is switched to target BS from source base station by source VOG, and the TCP link informations and video information that the source VOG is local are included in the switching response message, so that target VOG carries out transmission of video according to the TCP link informations and video information with the terminal, realize that terminal video when being switched to target BS from source base station is not interrupted, solve terminal in the prior art and watch video when carrying out base station switching, terminal is needed to send video request again, the defect for causing Consumer's Experience effect to decline.Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings Other accompanying drawings.

Fig. 1 is the flow chart of video switching processing method embodiment one of the present invention；

Fig. 2 is the flow chart of video switching processing method embodiment two of the present invention；

Fig. 3 is the flow chart of video switching processing method embodiment three of the present invention；

Fig. 4 is the flow chart of video switching processing method example IV of the present invention；

Fig. 5 is the structural representation that source video of the present invention optimizes gateway embodiment one；

Fig. 6 is the structural representation that source video of the present invention optimizes gateway embodiment two；

Fig. 7 is the structural representation of source base station embodiment one of the present invention；

Fig. 8 is the structural representation of target BS embodiment one of the present invention；

Fig. 9 is the structural representation that target video of the present invention optimizes gateway embodiment one；

Figure 10 is the structural representation that target video of the present invention optimizes gateway embodiment two；

Figure 11 is the structural representation of video cache switching processing system embodiment of the present invention；Figure 12 is the flow chart of video switching processing method embodiment five of the present invention；

Figure 13 is the flow chart of video switching processing method embodiment six of the present invention；

Figure 14 is the flow chart of video switching processing method embodiment seven of the present invention；

Figure 15 is the flow chart of video switching processing method embodiment eight of the present invention；

Figure 16 is the flow chart of video switching processing method embodiment nine of the present invention；

Figure 17 is the flow chart of video switching processing method embodiment ten of the present invention；

Figure 18 is the structural representation that source video of the present invention optimizes gateway embodiment three；

Figure 19 is the structural representation of source base station embodiment two of the present invention；

Figure 20 is the structural representation of target BS embodiment two of the present invention；

Figure 21 is the structural representation that target video of the present invention optimizes gateway embodiment three.Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Video switching processing system of the present invention includes source base station, source video optimization gateway VOG, target Base station and target VOG and terminal and video resource service device.When terminal is in source base station coverage, terminal sends TCP to video resource service device and sets up connection request, source video optimization gateway set up link block intercept it is described set up connection request, and connection request set up according to the TCP set up TCP with terminal and video resource service device and be connected.Terminal sends video request to video resource service device, source video optimizes gateway acquisition module according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal.Terminal is in moving process, target BS is switched to from source base station, now the sending module of source base station first sends switching to source VOG and indicated, source VOG receiving module receives the switching instruction that source base station is sent, and switching response message is sent to source base station by sending module, local source VOG TCP link informations and video messaging are included in the switching response message, the receiving module of source base station receives the switching response message that the source VOG is sent, and switching notice is sent to target BS by the second sending module, the TCP connection messages and the video messaging are included in the switching notice, the receiving module of target BS receives the switching notice that the source base station is sent, and the switching notice is sent to target VOG by sending module, target VOG receiving module receives the switching notice that target BS is sent, set up the TCP link informations that link block included according to the switching notice and set up TCP with terminal and video resource service device and be connected, the acquisition module of the target VOG obtains video resource corresponding with the video information, and the video response for including the video resource is returned to the terminal.The target VOG is removed after video playback terminates, by removing module and according to the TCP link informations is set up TCP connections.

Fig. 1 is the flow chart of video switching processing method embodiment one of the present invention, as shown in figure 1, the method for the present embodiment can include：

Walk rapid 101, source video optimization gateway VOG intercept terminal and set up connection request, the network address for setting up the network address and the terminal that connection request includes the video resource service device to what video resource service device was sent；

Walk rapid 102, the source VOG set up first with the terminal using the network address of the video resource service device and are connected, and setting up second with the video resource service device using the network address of the terminal is connected；

Walk rapid 103, the source VOG receive the video request that the terminal is sent by the described first connection, according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal； Walk rapid 104, the source VOG receive the switching instruction that source base station is sent when the terminal is switched to target BS from the source base station；

Walk rapid 105, the source VOG construct handoff response, and the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection；Walk rapid 106, the source VOG send the handoff response by the source base station and the target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint indicates that the target VOG continues the transmission video resource from the video breakpoint to the terminal.

Specifically, terminal is sent to video resource service device first when wanting to obtain video resource

TCP sets up connection request, the TCP that source video optimization gateway VOG interceptions terminal is sent sets up connection request, and the network address for the video resource service device set up included in connection request using the TCP is set up TCP with terminal and is connected, it is used as first to connect the connection；TCP is set up with video resource service device to be connected, assign the connection as the second connection using the network address of the TCP terminals set up included in connection request.After source VOG sets up the first and second connections, the video request that source VOG is sent by the first connection receiving terminal to video resource service device, acquisition request video resource, video informations of the source VOG according to included in the video request, examine Check local caches and whether there is the corresponding video resource of the video information, video response is returned to terminal according to inspection Check result.Terminal is among mobile process, when terminal switches from source base station to target BS, and source VOG receives the switching instruction that source base station is sent, and source base station indicates that source VOG is switched over.Source VOG is received after switching instruction, and switching response message is constructed according to the source VOG TCP link informations locally set up and the video information.The handoff response includes the controlling transmission information and video breakpoint information of the first connection and the second connection, source VOG sends the handoff response by source base station and target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of the second connection are respectively used to set up the transmission control context of the first connection and the second connection on target VOG, and the information of the video breakpoint indicates that target VOG continues to transmit video resource from video breakpoint to the terminal.Transmission of the target VOG by setting up the first connection and the second connection controls context, that is, the connection migration by source VOG respectively with video resource service device and terminal foundation has been arrived on target VOG after a handover.Target VOG by the process of similar source VOG foundation connection without rebuilding connection again.

The link information of migration referring specifically to table 1, Table 1

It should be noted that the base station in the present embodiment can also be base station controller RNC.

Jin mono- Walk, the information of the video breakpoint, including：

URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

Specifically, the mode for video request has two kinds：The first, HTTP HTTP/1.1 bytes range request, HTTP/1.1 allows a part for client's request resource entity, the method of realization can be by asking one or more bytes ranges of resource entity, header field is asked using Range, the result that request is returned is exactly the scope for the request resource entity that Range header fields are indicated, Range supports effectively to recover from some failed transmissions, and supports from overall resource entity effectively fetching portion content；Accept-Range response header fields allow server to indicate acceptance of the server to range of requests to client.If source server receives bytes range, request can so send instruction： Accept-Ranges: bytes;If server can not receive any kind of range of requests, it will send instruction： Accept-Ranges: none.Go to advise that client should not attempt range of requests.Citing Illustrate, watch youtube videos using the youtube clients of mobile phone, first interaction is request complete video, and second interaction is the dragging seen during same video.In this example, request complete video and the URL of both partial videos of dragging are identicals, the difference is that Range header fields, the Range header fields of request complete video are " Range:Bytes=0-2625756 ", and the Range header fields of requested part video content are " Range: bytes=1433600-2625756 " .

The second way：Range of requests based on time migration.The range header fields in the server of bytes range, video request are not supported to be ignored.It is the scene that there is requested part content and user is during video is played, for example, there is partial content to be not desired to see, he may drag playing progress bar, ask further part video.The way passed through in existing network is, in the URL that user asks, and carries the field based on time migration, and such as " begin ", " start ", its chronomere are generally millisecond.For example, accessing youtube videos using computer, " begin=48023 " unit is added for millisecond in request URL during dragging.

Jin mono- Walk, it is described to obtain video resource corresponding with the video information, the video response for including the video resource is returned to the terminal, including：

If inspection Check results are not have the video information included in the video request, then the source VOG sends the video request according to the video information included in the video request to the video resource service device, obtain and the video resource corresponding to the video information, and video response is returned to the terminal, the video response includes the video resource；

Or,

If inspection Check results is have the video information, the source VOG returns to the video response to the terminal, and the video response is included from local cache acquisition and the video resource corresponding to the video information.

Specifically, whether source VOG has a video information according to the video information inspection Check local caches included in video request, and inspection Check results, which there are, to be had the video information included in the video request and do not have the two kinds of results of video information included in the video request：If local cache has the video information included in the video request, source VOG can directly return to the video response for including the corresponding video resource of video information in video response, the video response to terminal；If local cache does not have the video resource corresponding to the video information included in the video request, then source The video informations of VOG then in video request send video request to video resource service device.The video response for being returned after corresponding video resource to terminal and including the video resource is obtained from video resource service device end.The video distribution agreement that the video request is transmitted based on HTTP, can ask whole video, equally can also be according to time migration or the range of requests partial video of byte offset.

The method for constructing the video request of partial video：

The method using which kind of range of requests is first determined whether, if in initial video request, there is Range header fields, then in new video request, Range bytes ranges are used；If in initial video request, in the absence of Range header fields, but in the response that initial video is asked, there is Accept-Range response header fields, then in new video request, also using Range bytes ranges；When above-mentioned two situations are all invalid, then in new video request, use time deviation range.It is determined that the method for specific scope, the result of byte offset recorded mngeByteVar, the result of time migration recorded in mngeTimeVar：If VOG is to the original video that the video response of user is exactly user's request, i.e., video content and server is consistent：If new video request uses Range bytes ranges, using the TCP reception bytes having been acknowledged and video total size as the Range header fields of request, mngeByteVar=(the reception byte that TCP has been acknowledged）- (video total size）；If new video asks use time deviation range, the computational methods of its time offset value are：（The reception byte that TCP has been acknowledged）I (video total sizes）* video total duration；If VOG have passed through transcoding to the original video that the video response of user is not user's request：The reception byte conversion that TCP is had been acknowledged first is video reproduction time, i.e. video reproduction time=(reception byte that TCP has been acknowledged）I (transcoding rear video total sizes）* video total duration；If new video request uses Range bytes ranges, mngeByteVar=(video reproduction time）I (video total durations）* (original video total size）- (original video total size）；If new video asks use time deviation range, using video, reproduction time is used as time migration scope, i.e. the $ ^ videos of 31,^61 11 reproduction time.

It is byte or the access request of time migration new video request to be determined specifically used, and specifically after range size；If selection is byte offset, mnge header fields are added in new video request, the value of header field uses calculated rangeByteVar;If selection is time migration, the title of time migration field needs to be configured according to different video SP, and such as youtube uses " begin ", and potato uses " tflvbegin ", and the video sp also having uses " start ".Finally in the URL that new video is asked, addition time migration field, g Jie " begin=rangeTimeVar ", Or " start=rangeTimeVar,.

Jin mono- Walk, after the source V0G sends the handoff response by the source base station and the target BS to target VOG, in addition to：

Specifically, stop issuing playing video data to terminal after the VOG switching notices for receiving source base station in source return to video switching response message, and before deleting with terminal and with video resource service device set up TCP be connected corresponding to TCP link informations.

The present embodiment, the TCP is obtained when terminal sets up connection request and video request to video resource service device transmission TCP by source VOG and sets up the TCP link informations included in connection request and the video information included in video request, so as to when terminal switches from source base station to target BS, returned to source base station in switching response message and include the source VOG local TCP link informations and the video information, so that target VOG carries out transmission of video according to the TCP link informations and video information behind switching base station with the terminal.Terminal is solved in the handoff procedure of base station, the video that terminal is accessed is aborted, it is necessary to the problem of resending video request.Make user during video is watched for base station switching without discovering.

Fig. 2 is the flow chart of video switching processing method embodiment two of the present invention, as shown in Fig. 2 the method for the present embodiment can include：

Walk rapid 201, source base station send switching to source video optimization gateway VOG when terminal is switched to target BS from the source base station and indicated；

Walk rapid 202, the source base station receive the switching response message that the source VOG is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Walk rapid 203, the source base station send the switching response message by the target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal. Specifically, source base station sends switching to the source VOG of its subordinate among terminal moving process, when occurring base station switching and indicated, indicates that the source VOG is switched over.Source VOG is received after switching instruction, switching response message is returned to source base station, the video information included in local active VOG TCP link informations and video request is included in the switching response message, so that the TCP link informations and video information are sent to target VOG by target BS, and then the target VOG is set to carry out transmission of video with the terminal according to the TCP link informations and video information.It should be noted that the base station in the present embodiment can also be base station controller R N C.

The present embodiment, source base station is when terminal switches from source base station to target BS, reception source VOG switching response message, and send switching notice to target BS, so that target BS sends the switching notice to target VOG, wherein, switching notice includes local the source VOG in switching response message TCP link informations and video information, so that target VOG carries out transmission of video according to the TCP link informations and video information with the terminal.Terminal is realized in the handoff procedure of base station, the video of viewing will not be interrupted, it is not necessary to which terminal sends video request again.

Fig. 3 is the flow chart of video switching processing method embodiment three of the present invention, as shown in figure 3, the method for the present embodiment can include：

Walk rapid 301, target BS receive the handoff response that source base station is sent when terminal is switched to the target BS from the source base station, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Walk rapid 302, the target BS send the switching response message to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

Specifically, target BS receives the switching notice that source base station is sent, and send the switching notice to target VOG, the video information included in the switching notice in local TCP link informations and video request comprising source VOG, so that target VOG carries out transmission of video according to the TCP link informations and terminal.It should be noted that the base station being carried out in example can also be base station Controller RNC.

The present embodiment, target BS receives the switching notice that source base station is sent, and sends to target VOG so that the TCP link informations and video information that target VOG can be included according to the switching notice carry out transmission of video with terminal.Realize terminal and watch video in the handoff procedure of base station, it is not necessary to sending video request again.

Fig. 4 is the flow chart of video switching processing method example IV of the present invention, as shown in figure 4, the method for the present embodiment can include：

Walk rapid 401, target VOG receive the handoff response that target BS is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The transmission that Walk rapid 402, the target VOG set up first connection and the second connection according to the transmission control information of the described first connection and the transmission control information of second connection controls context, is continued to transmit video resource to the terminal according to the information of the video breakpoint.

Specifically, target VOG receives the switching notice of target BS, the video information in local active VOG TCP link informations and video request is included in the switching notice, set up and be connected with the TCP of terminal and video resource service device using the video resource service device network address, whether inspection Check local caches have the video information, and video response is returned to terminal according to inspection Check result.It should be noted that the base station in the present embodiment can also be base station controller RNC.

Jin mono- Walk, the information of the video breakpoint, including：

Or,

Jin mono- Walk, the target VOG continues to transmit video resource according to the information of the video breakpoint to the terminal, including：

Whether the target VOG inspections Check local caches have the corresponding video information of information of the video breakpoint； If inspection Check results are not have the video information, then the target VOG sends video request according to the information of the video breakpoint to video resource service device, obtain the video resource corresponding to the information with the video breakpoint, and video response is returned to terminal, the video response includes the video resource；

Or,

Specifically, the video information inspection Check included in the switching notice that target VOG is sent according to target BS, which locally delays, two kinds of results：If inspection Check results is have the video information, target VOG then directly returns to video response to terminal, and the video response includes the corresponding video resource of the video information；If inspection Check does not have the video information, target VOG then sends video request to video resource service device according to the video information, obtains after video resource, video response is returned to terminal.

Target VOG constructs new video request and passes to Resource Server, the video content for the remainder that new video request is not watched before request is switched.And the video content of remainder is asked, it can be asked based on bytes range and the range of requests based on time migration.

Jin mono- Walk, after the target VOG continues transmission video resource according to the information of the video breakpoint to the terminal, in addition to：

The present embodiment, target VOG carries out transmission of video according to the TCP link informations and video information included in the switching notice by receiving the switching notice of target BS to terminal.Realize and do not need terminal to send a request for video again.

Fig. 5 is the structural representation that source video of the present invention optimizes gateway embodiment one, as shown in figure 5, the video optimized gateway of the present embodiment can include：

Blocking module 101, connection request is set up for intercepting terminal to what video resource service device was sent, described to set up the network address of the connection request comprising the video resource service device and the network address of the terminal；

Set up link block 102, for using the video resource service device the network address with it is described Terminal sets up the first connection, and setting up second with the video resource service device using the network address of the terminal is connected；

Acquisition module 103, for receiving the video request that the terminal is sent by the described first connection, according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal；

Receiving module 104, is indicated for receiving the switching that source base station is sent when the terminal is switched to target BS from the source base station；

Constructing module 105, for constructing handoff response, the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection；Sending module 106, for sending the handoff response to target VOG by the source base station and the target BS, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint indicates that the target VOG continues the transmission video resource from the video breakpoint to the terminal.

Jin mono- Walk, the information of the video breakpoint, including：

Or,

Jin mono- Walk, the acquisition module 103, specifically for：

Or,

If it is to have the video information included in the video request to examine Check results, video response is returned to the terminal, the video response is included from local cache acquisition and the video resource corresponding to the video information. The video optimized gateway of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 1, and its implementing principle and technical effect is similar, and here is omitted.

Fig. 6 is the structural representation that source video of the present invention optimizes gateway embodiment two, as shown in fig. 6, the video optimized gateway of the present embodiment can also include on the basis of Fig. 5 video optimized gateway：Removing module 107, after the handoff response being sent for the sending module to target VOG by the source base station and the target BS, stop issuing playing video data to terminal, delete the link information set up with the terminal and the video resource service device.

The video optimized gateway of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 1, and its implementing principle and technical effect is similar, and here is omitted.

Fig. 7 is the structural representation of source base station embodiment one of the present invention, as shown in fig. 7, the source base station of the present embodiment can include：

First sending module 201, is indicated for sending switching to source video optimization gateway VOG when terminal is switched to target BS from the source base station；

Receiving module 202, for receiving the switching response message that the source VOG is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Second sending module 203, for sending the switching response message to target VOG by the target BS, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

The source base station of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 2, and its implementing principle and technical effect is similar, and here is omitted.

Fig. 8 is the structural representation of target BS embodiment one of the present invention, as shown in figure 8, the target BS of the present embodiment can include：

Receiving module 301, for receiving the handoff response that source base station is sent when terminal is switched to the target BS from the source base station, the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection, and described first is connected as institute The connection that source VOG is set up using the network address of video resource service device with the terminal is stated, described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Sending module 302, for sending the switching response message to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

The target BS of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 3, and its implementing principle and technical effect is similar, and here is omitted.

Fig. 9 is the structural representation that target video of the present invention optimizes gateway embodiment one, as shown in figure 9, the target video optimization gateway of the present embodiment can include：

Receiving module 401, the handoff response that target BS is sent is received for receiving the switching notice of target BS transmission, the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；Continue transport module 402, transmission control information for the transmission control information according to the described first connection and second connection sets up first connection and the transmission of the second connection controls context, is continued to transmit video resource to the terminal according to the information of the video breakpoint.

Jin mono- Walk, the information of the video breakpoint, including：

Or,

Jin mono- Walk, the continuation transport module 402, specifically for：

Whether inspection Check local caches have the corresponding video information of information of the video breakpoint；If inspection Check results is do not have the video information, video request is sent to video resource service device according to the information of the video breakpoint, obtained and regarding corresponding to the information of the video breakpoint Frequency resource, and video response is returned to terminal, the video response includes the video resource；Or,

If inspection Check results is have the video information, video response is returned to the terminal, the video response includes the video resource corresponding to the information with the video breakpoint obtained from local cache.

The video optimized gateway of the present embodiment, can be used for the technical scheme for performing embodiment of the method shown in Fig. 4, and its implementing principle and technical effect is similar, and here is omitted.

Figure 10 is the structural representation that target video of the present invention optimizes gateway embodiment two, as shown in Figure 10, and the target video of the present embodiment optimizes gateway on the basis of the video optimized gateway shown in Fig. 9, can also include：

Module 403 is removed, after terminating in video playback, the connection that the first connection transmission control information, the second connection transmission control information and video resource service device and terminal according to included in the handoff response are set up is removed.

Figure 11 is the structural representation of video cache switching processing system embodiment of the present invention, and as shown in Figure 11, the video cache switching processing system of the present embodiment includes：Source video optimization gateway 501, source base station 502, target BS 503, target video optimization gateway 504, terminal 505, video resource service device 506.

The source video optimization gateway of the present embodiment is identical with the principle of the video cache switching handling method embodiment of the present invention shown in Fig. 1, repeats no more；The source base station of the present embodiment is identical with the principle of the video cache switching handling method embodiment of the present invention shown in Fig. 2, repeats no more；The target BS of the present embodiment is identical with the principle of the video cache switching handling method embodiment of the present invention shown in Fig. 3, repeats no more；The target video optimization gateway of the present embodiment is identical with the principle of the video cache switching handling method embodiment of the present invention shown in Fig. 4, repeats no more.

The technical scheme of the embodiment of the present invention, different from being in place of prior art when terminal switches from source base station to target BS, comprising local source VOG TCP link informations and video breakpoint information in the switching response message that source VOG is returned to source base station, TCP is set up for target VOG with terminal, with video resource service device to be connected and when there not being video resource, and the video resource is obtained to video resource service device. Several specific embodiments are used below, and the technical scheme to embodiment of the method shown in Fig. 1 is described in detail.It should be noted that the base station in the following examples can also be base station controller

RNC。

Figure 12 is the flow chart of video switching processing method embodiment five of the present invention, as shown in figure 12, the video switching processing method usage scenario of the present embodiment has the video resource in terminal video request for source VOG, and target VOG has the video resource corresponding to the information of video breakpoint in handoff response.Specifically include：

Walk rapid 501, terminal send to video resource service device and set up connection request；

Specifically, terminal sends to video resource service device when thinking viewing video and sets up TCP connection requests, the network address, the network address of terminal of video resource service device are included in the connection request.

Walk rapid 502, source video optimization gateway VOG are intercepted and are set up connection request, set up the first and second connections；

Specifically, source VOG sets up TCP with terminal using the network address of the TCP video resource service devices set up included in connection request and is connected, and assign the connection as the first connection；TCP is set up using the network address of the TCP terminals set up included in connection request with video resource service device to be connected, the connection is used as the second connection.

Walk rapid 503, terminal send video request to video resource service device；

Walk rapid 504, source VOG inspection Check local caches are to have video resource；

Specifically, video informations of the source VOG according to included in the video request, inspection Check local caches whether there is the result of inspection Check in the corresponding video resource of the video information, the present embodiment not have the video resource.

Walk rapid 505, source VOG return to video response to the terminal；

Specifically, the video response is included from local cache acquisition and the video resource corresponding to the video request.

Walk rapid 506, source base station send switching to source VOG when terminal is switched to target BS from the source base station and indicated；

Specifically, when terminal is switched to target BS from source base station, source base station sends switching to source VOG and indicated, indicates that source VOG switches.

Walk rapid 507, source VOG construct switching response message, and disappear to source base station return handoff response Walk rapid 508, source VOG stop issuing video resource to terminal, delete local connection information；Walk rapid 509, source base station send switching response message to target BS；

Specifically, source base station receives the switching response message that source VOG is sent, and the switching response message is sent to target BS.

Walk rapid 510, target BS send switching response message to target VOG；

Specifically, what target BS reception source base station was sent but changes response message, and the switching response message is sent to target VOG.

Walk rapid 511, target VOG according to the switching response message set up connection '

Specifically, target VOG receives the switching response message that target BS is sent, the switching response message includes the controlling transmission information of the described first connection, the controlling transmission information of second connection and the information of video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device, and the transmission control context of first connection and the second connection is set up according to the first and second connections.

Walk rapid 512, the target VOG inspection Check local caches have video resource；

Specifically, whether the video breakpoint information inspection Check local caches that target VOG includes according to the handoff response have in corresponding video resource, the present embodiment, and inspection Check results are to have the video resource.

Walk rapid 513, the target VOG return to video response to terminal；

Walk rapid 514, the target VOG are after video playback terminates, and dismounting sets up TCP connections according to the TCP link informations.

The present embodiment, when whether inspection Check local caches have the video information included in terminal video request before and after switching in base station, source VOG is to have video information, the information inspection Check local caches for the video breakpoint that target VOG includes according to switching response message also have the video resource, directly can return to video response to terminal.

Figure 13 is the flow chart of video switching processing method embodiment six of the present invention, as shown in figure 13, the video switching processing method usage scenario of the present embodiment has the video information included in video request, target video optimization gateway for source VOG and does not have the corresponding video information of information for the video breakpoint that switching response message includes.Specifically include： The rapid 601-611 of Walk are identical Yu the rapid 501-511 of Walk, and here is omitted.

The information inspection Check local caches result of the video breakpoint of Walk rapid 612, target VOG according to included by the switching response message does not have the video resource, construction new video request；

Walk rapid 613, target VOG send new video request to video resource service device；

Walk rapid 614, video resource service device return to video resource to the target VOG；Walk rapid 615, target VOG return to video response to terminal；

After Walk rapid 616, video playback terminate, target VOG removes connection.

The present embodiment, when whether inspection Check local caches have the video information included in terminal video request, source VOG is to have the video resource, target VOG does not have the video resource, then target VOG is asked according to the information structuring new video of the video breakpoint included in switching notice, and sent to video resource service device to obtain video resource, return to video response to terminal.

Figure 14 is the flow chart of video switching processing method embodiment seven of the present invention, as shown in figure 14, the video switching processing method usage scenario of the present embodiment does not have the video information included in video request, target video optimization gateway for source video optimization gateway and has the information of the video breakpoint included in switching response message.Specifically include：

Walk rapid 701, terminal send to video resource service device and set up connection request；

Walk rapid 702, source VOG set up connection request, set up the first and second connections；

Walk rapid 703, terminal send video request to video resource service device；

Walk rapid 704, source VOG inspection Check local caches do not have the video resource included in video request；

Walk rapid 705, source VOG send video request to video resource service device；

Specifically, source VOG sends video request according to the video information included in video request to video resource service device, obtains and the video resource corresponding to the video information.

Walk rapid 706, video resource service device return to video resource to source VOG；

Walk rapid 707, source VOG return to video response to terminal；

The rapid 708-716 of Walk are identical Yu the rapid 506-514 of Walk, do not repeating herein.

The present embodiment, source VOG does not have corresponding video resource, target in terminal video request

VOG has the corresponding video resource of information of video breakpoint in switching response message, then target VOG directly returns to video response to terminal.

Figure 15 is the flow chart of video switching processing method embodiment eight of the present invention, as shown in figure 15, The video switching processing method usage scenario of the present embodiment is that source video optimizes gateway and target video optimization gateway does not all have the video information included in video request.Specifically include：

The rapid 801-813 of Walk are identical Yu the rapid 701-713 of Walk, and here is omitted.

The rapid 814-818 of Walk are identical Yu the rapid 612-616 of Walk, and here is omitted.

Figure 16 is the flow chart of video switching processing method embodiment nine of the present invention, as shown in figure 16, the video switching processing method usage scenario of the present embodiment be source video optimize gateway have video it is delicate and pretty in the video information that includes, target BS do not dispose target video optimization gateway.Specifically include：

The rapid 901-905 of Walk are identical with 501-505, and here is omitted.

Walk rapid 906, source base station send switching to source VOG when terminal is switched to target BS from the source base station and indicated, the switching indicates not disposing VOG notice comprising target BS；

Walk rapid 907, source VOG receive the switching instruction that source base station is sent, and the information of the controlling transmission information for not including the described first connection in switching response message, the switching response message, the controlling transmission information of second connection and video breakpoint is sent to source base station；

Walk rapid 908, source VOG remove the first connection and the second connection；

Walk rapid 909, terminal send to Resource Server and set up connection request, video request again；Walk rapid 910, video resource service device return to video response to terminal, and the video response includes the video resource.

Special circumstances when the present embodiment is switching, i.e. target BS do not dispose VOG, and such a situation then needs terminal to set up connection request and video request to Resource Server transmission TCP again after target BS is switched to.

Figure 17 is the flow chart of video switching processing method embodiment ten of the present invention, as shown in figure 17, and the video switching processing method usage scenario of the present embodiment does not have the video information included in video request for source VOG and only forwarded.Specifically include：

Walk rapid 1001, terminal send to video resource service device and set up connection request；

Walk rapid 1002, source VOG forwarding are described to set up connection request；

Walk rapid 1003, terminal send video request to video resource service device；

Walk rapid 1004, source VOG examine Check local caches, do not have the video information in video request；Walk rapid 1005, source VOG send video request to video resource service device；

Walk rapid 1006, video resource service device return to video resource；

Walk rapid 1007, source VOG return to video response to terminal； Walk rapid 1008, source VOG videos injection local cache；

Walk rapid 1009, terminal send transmission validation of information to video resource service device；

Walk rapid 1010, source VOG transmit validation of information to the forwarding of video resource service device；

Walk rapid 1011, source base station send switching to source VOG and indicated；

Walk rapid 1012, construction switching response message, and return to switching response message to source base station；Specifically, under the application scenarios in the present embodiment, source base station, which is returned, does not include connection transmission control information and the information of video breakpoint in switching response message.

Walk rapid 1013, source VOG delete local connection information；

Walk rapid 1014, source base station send switching activation to target BS and indicated；

Walk rapid 1015, video resource service device return to video response；

Walk rapid 1016, target VOG return to video response to terminal forwarding；

Walk rapid 1017, terminal send transmission validation of information to video resource service device；

Walk rapid 1018, target VOG forward the transmission validation of information；

Walk rapid 1019, video playback terminate, and remove connection.

Special circumstances when the present embodiment is switching, i.e. source VOG does not have the video resource in the video request of terminal, connection transmission control information and the information of video breakpoint are not included in the switching response message that source VOG is constructed when terminal switches to target BS, source VOG and target VOG are only forwarded.

Figure 18 is the structural representation that source video of the present invention optimizes gateway embodiment three, as shown in Figure 18, the network equipment of the present embodiment, including：Memory 103 and bus 104 are also show in processor 101 and interface circuit 102, figure, the processor 101, interface circuit 102 and memory 103 are connected by bus 104 and complete mutual communication.

The bus 104 can be Industry Standard Architecture (English：Industry Standard Architecture, referred to as：ISA) bus, external equipment interconnection (English：Peripheral Component Interconnect, referred to as：PCI) bus or inter-integrated circuit（English：Inter-Integrated Circuit, referred to as：I2C) bus etc..The bus 104 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 18 with a thick line, it is not intended that only one bus or a type of bus.

Memory 103 is used to store executable program code, and the program code includes computer-managed instruction.Memory 103 can be volatile memory（English：Volatile memory), for example with Machine memory (English：Random-access memory, referred to as：), RAM it can also be nonvolatile memory（English：Non- volatile memory, referred to as：NVM), such as read-only storage（English：Read-only memory, abbreviation ROM), flash memory（English：Flash memory), hard disk（English：Hard disk drive, abbreviation HDD) or solid state hard disc（English：Solid-state drive, abbreviation SSD).

Processor 101 can be central processing unit（English：Central processing unit, referred to as： CPU) .

Wherein, processor 101 can call the operational order or program code stored in memory 103, and to perform the processing method of video cache switching provided in an embodiment of the present invention, methods described includes：

The TCP that the interception of processor 101 terminal is sent to video resource service device sets up connection request, and the TCP link informations included in connection request are set up according to the TCP and sets up TCP with the terminal and the video resource service device and is connected；

Processor 101 intercepts the video request that the terminal is sent to video resource service device, according to the video information included in the video request, and whether inspection Check local caches have the video information, and return to video response to the terminal according to inspection Check results；

Processor 101 receives the switching instruction that source base station is sent when the terminal is switched to target BS from the source base station by interface circuit 102；

Processor 101 sends switching response message by the source base station of interface circuit 102, the TCP link informations and the video information that the source VOG is local are included in the switching response message, so that the TCP link informations and video information are sent to the target BS by the source base station, and then make the target BS that the TCP link informations and video information are sent into target VOG, so that the target VOG carries out transmission of video according to the TCP link informations and video information with the terminal.

Figure 19 is the structural representation of source base station embodiment two of the present invention, as shown in figure 19, the network equipment of the present embodiment, including：Memory 203 and bus 204 are also show in processor 201 and interface circuit 202, figure, the processor 201, interface circuit 202 and memory 203 are connected by bus 204 and complete mutual communication.

The bus 204 can be Industry Standard Architecture (English：Industry Standard Architecture, referred to as：ISA) bus, external equipment interconnection（English： Peripheral Component Interconnect, referred to as：PCI) bus or inter-integrated circuit（English：Inter-Integrated Circuit, referred to as：I2C) bus etc..The bus 204 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 19 with a thick line, it is not intended that only one bus or a type of bus.

Memory 203 is used to store executable program code, and the program code includes computer-managed instruction.Memory 203 can be volatile memory（English：Volatile memory), such as random access memory (English：Random-access memory, referred to as：), RAM it can also be nonvolatile memory（English：Non- volatile memory, referred to as：NVM), such as read-only storage（English：Read-only memory, abbreviation ROM), flash memory（English：Flash memory), hard disk（English：Hard disk drive, abbreviation HDD) or solid state hard disc（English：Solid-state drive, abbreviation SSD).

Processor 201 can be central processing unit（English：Central processing unit, referred to as： CPU) .

Wherein, processor 201 can call the operational order or program code stored in memory 203, and to perform the processing method of video cache switching provided in an embodiment of the present invention, methods described includes：

Processor 201 sends switching to source VOG when terminal is switched to target BS from the source base station and indicated；

Processor 201 receives the switching response message that the source VOG is sent by interface circuit 202；

Processor 201 sends switching notice by interface circuit 202 to the target BS, the TCP link informations and the video information that the source VOG is local are included in the switching notice, so that the TCP link informations and video information are sent to target VOG by the target BS, and then the target VOG is set to carry out transmission of video with the terminal according to the TCP link informations and video information.

Figure 20 is the structural representation of target BS embodiment two of the present invention, as shown in figure 20, the network equipment of the present embodiment, including：Memory 303 and bus 304 are also show in processor 301 and interface circuit 302, figure, the processor 301, interface circuit 302 and memory 303 are connected by bus 304 and complete mutual communication.

The bus 304 can be Industry Standard Architecture（English： Industry Standard Architecture, referred to as：ISA) bus, external equipment interconnection（English：Peripheral Component Interconnect, referred to as：PCI) bus or inter-integrated circuit（English：Inter-Integrated Circuit, referred to as：I2C) bus etc..The bus 304 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 20 with a thick line, it is not intended that only one bus or a type of bus.

Memory 303 is used to store executable program code, and the program code includes computer-managed instruction.Memory 303 can be volatile memory（English：Volatile memory), such as random access memory (English：Random-access memory, referred to as：), RAM it can also be nonvolatile memory（English：Non- volatile memory, referred to as：NVM), such as read-only storage（English：Read-only memory, abbreviation ROM), flash memory（English：Flash memory), hard disk（English：Hard disk drive, abbreviation HDD) or solid state hard disc（English：Solid-state drive, abbreviation SSD).

Processor 301 can be central processing unit（English：Central processing unit, referred to as： CPU) .

Wherein, processor 301 can call the operational order or program code stored in memory 303, and to perform the processing method of video cache switching provided in an embodiment of the present invention, methods described includes：

Processor 301 is received in the switching notice that is sent when terminal is switched to the target BS from the source base station of source base station, the switching notice comprising the terminal TCP link informations and video information in the VOG of source by interface circuit 302；

Processor 301 sends the switching notice by interface circuit 302 to target VOG, so that the target VOG carries out transmission of video according to the TCP link informations and video information with the terminal.

Figure 21 is the structural representation that target video of the present invention optimizes gateway embodiment three, as shown in figure 21, the network equipment of the present embodiment, including：Memory 403 and bus 404 are also show in processor 401 and interface circuit 402, figure, the processor 401, interface circuit 402 and memory 403 are connected by bus 404 and complete mutual communication.

The bus 404 can be Industry Standard Architecture (English：Industry Standard Architecture, referred to as：ISA) bus, external equipment interconnection (English：Peripheral Component Interconnect, referred to as：PCI) bus or inter-integrated circuit（English： Inter-Integrated Circuit, referred to as：I2C) bus etc..The bus 404 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 21 with a thick line, it is not intended that only one bus or a type of bus.

Memory 403 is used to store executable program code, and the program code includes computer-managed instruction.Memory 403 can be volatile memory（English：Volatile memory), such as random access memory (English：Random-access memory, referred to as：), RAM it can also be nonvolatile memory（English：Non- volatile memory, referred to as：NVM), such as read-only storage（English：Read-only memory, abbreviation ROM), flash memory（English：Flash memory), hard disk（English：Hard disk drive, abbreviation HDD) or solid state hard disc（English：Solid-state drive, abbreviation SSD).

Processor 401 can be central processing unit（English：Central processing unit, referred to as： CPU) .

Wherein, processor 401 can call the operational order or program code stored in memory 403, and to perform the processing method of video cache switching provided in an embodiment of the present invention, methods described includes：

Processor 401 receives the switching notice that target BS is sent by interface circuit 402, comprising terminal TCP link informations and video information in the VOG of source in the switching notice；

Processor 401 is set up TCP with terminal and video resource service device according to the TCP link informations and is connected；

Whether video information of the processor 401 according to included in switching notice, inspection Check local caches have the video information, and return to video response to the terminal according to inspection Check results.

In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method, it can realize by another way.For example, device embodiment described above is only schematical, for example, the division of the unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit that this illustrates as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at one Individual place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in each of the invention embodiment can be integrated in a processing unit or unit is individually physically present, can also two or more units be integrated in-individual unit in.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.

The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Or processor（Processor the present invention each embodiment methods described Bu Fen Walk) are performed rapid.And foregoing storage medium includes：U disks, mobile hard disk, read-only storage（Read-Only Memory, ROM), random access memory（Random Access Memory, RAM), magnetic disc or CD etc. are various can be with the medium of store program codes.

Those skilled in the art can be understood that, for convenience and simplicity of description, only it is illustrated with the division of above-mentioned each functional module, in practical application, it can as needed and by above-mentioned functions distribute and be completed by different functional modules, the internal structure of device is divided into different functional modules, to complete all or part of function described above.The specific work process of the device of foregoing description, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims

Claims

1st, a kind of video cache switching handling method, it is characterised in that including：

Source video optimization gateway VOG intercepts terminal and sets up connection request, the network address for setting up the network address and the terminal that connection request includes the video resource service device to what video resource service device was sent；

The source VOG sets up first with the terminal using the network address of the video resource service device and is connected, and setting up second with the video resource service device using the network address of the terminal is connected；

The source VOG receives the video request that the terminal is sent by the described first connection, according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal；

The source VOG receives the switching instruction that source base station is sent when the terminal is switched to target BS from the source base station；

The source VOG constructs handoff response, and the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection；

The source VOG sends the handoff response by the source base station and the target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint indicates that the target VOG continues the transmission video resource from the video breakpoint to the terminal.

2nd, the method according to claim 1, it is characterised in that the information of the video breakpoint, including：

URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

URL of the video resource on the video resource service device, to the content time scope of the terminal transmission.

3rd, method according to claim 1 or 2, it is characterised in that acquisition video resource corresponding with the video information, the video response for including the video resource is returned to the terminal, including： Whether the source VOG inspections Check local caches have the video information included in the video request；

If inspection Check results are not have the video information included in the video request, then the source VOG sends the video request according to the video information included in the video request to the video resource service device, obtain and the video resource corresponding to the video information, and video response is returned to the terminal, the video response includes the video resource；

Or,

If it is to have the video information included in the video request to examine Check results, the source VOG returns to the video response to the terminal, and the video response is included from local cache acquisition and the video resource corresponding to the video information.

4th, the method according to claim any one of 1-3, it is characterised in that after the source VOG sends the handoff response by the source base station and the target BS to target VOG, in addition to：

The source VOG stops sending the video data of the video resource to the terminal, deletes first connection and the described second connection.

5th, a kind of video cache switching handling method, it is characterised in that including：

Source base station sends switching to source video optimization gateway VOG when terminal is switched to target BS from the source base station and indicated；

The source base station receives the switching response message that the source VOG is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The source base station sends the switching response message by the target BS to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

6th, a kind of video cache switching handling method, it is characterised in that including：

Target BS receives source base station and sent out when terminal is switched to the target BS from the source base station The handoff response sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The target BS sends the switching response message to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

7th, a kind of video cache switching handling method, it is characterised in that including：

Target VOG receives the handoff response that target BS is sent, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that source VOG is set up using the network address of video resource service device with terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

The transmission that the target VOG sets up first connection and the second connection according to the transmission control information of the described first connection and the transmission control information of second connection controls context, is continued to transmit video resource to the terminal according to the information of the video breakpoint.

8th, method according to claim 7, it is characterised in that the information of the video breakpoint, including：

URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

URL of the video resource on the video resource service device, to the content time scope of the terminal transmission.

9th, the method according to claim 7 or 8, it is characterised in that the target VOG continues to transmit video resource according to the information of the video breakpoint to the terminal, including：

Whether the target VOG inspections Check local caches have the corresponding video information of information of the video breakpoint；

If inspection Check results is do not have the video information, the target VOG is according to the video The information of breakpoint sends video request to video resource service device, obtains the video resource corresponding to the information with the video breakpoint, and returns to video response to terminal, and the video response includes the video resource；

Or,

If inspection Check results is have the video information, the target VOG returns to video response to the terminal, and the video response includes the video resource corresponding to the information with the video breakpoint obtained from local cache.

10th, the method according to any one of claim 7-9, it is characterised in that after the target VOG continues transmission video resource according to the information of the video breakpoint to the terminal, in addition to：

The target VOG removes the connection that the first connection transmission control information, the second connection transmission control information and video resource service device and terminal according to included in the handoff response are set up after video playback terminates.

11st, a kind of video optimized gateway, it is characterised in that including：

Blocking module, connection request is set up for intercepting terminal to what video resource service device was sent, described to set up the network address of the connection request comprising the video resource service device and the network address of the terminal；

Link block is set up, setting up first with the terminal for the network address using the video resource service device is connected, and setting up second with the video resource service device using the network address of the terminal is connected；

Acquisition module, for receiving the video request that the terminal is sent by the described first connection, according to the video information included in the video request, video resource corresponding with the video information is obtained, the video response for including the video resource is returned to the terminal；

Receiving module, is indicated for receiving the switching that source base station is sent when the terminal is switched to target BS from the source base station；

Constructing module, for constructing handoff response, the handoff response includes the information of the controlling transmission information, the controlling transmission information of second connection and video breakpoint of the described first connection；

Sending module, for sending the handoff response to target VOG by the source base station and the target BS, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the biography of first connection and the second connection on the target VOG Defeated control context, the information of the video breakpoint indicates that the target VOG continues the transmission video resource from the video breakpoint to the terminal.

12nd, the video optimized gateway according to claim 11, it is characterised in that the information of the video breakpoint, including：

URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

URL of the video resource on the video resource service device, to the content time scope of the terminal transmission.

13rd, the video optimized gateway according to claim 11 or 12, it is characterised in that the acquisition module, specifically for：

Whether inspection Check local caches have the video information included in video request；

If inspection Check results are not have the video information included in the video request, video request is then sent to video resource service device according to the video information included in video request, obtain and the video resource corresponding to the video information, and video response is returned to the terminal, the video response includes the video resource；

Or,

If it is to have the video information included in the video request to examine Check results, video response is returned to the terminal, the video response is included from local cache acquisition and the video resource corresponding to the video information.

14th, the video optimized gateway according to claim any one of 11-13, it is characterised in that also include：

Removing module, after the handoff response being sent for the sending module to target VOG by the source base station and the target BS, stop sending the video data of the video resource to the terminal, delete first connection and the described second connection.

15th, a kind of base station, it is characterised in that including：

First sending module, is indicated for sending switching to source video optimization gateway VOG when terminal is switched to target BS from source base station；

Receiving module, for receiving the switching response message that the source VOG is sent, the handoff response includes the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint Information, described first is connected as the connection that the source V0G is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Second sending module, for sending the switching response message to target VOG by the target BS, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

16th, a kind of base station, it is characterised in that including：

Receiving module, for receiving the handoff response that source base station is sent when terminal is switched to target BS from the source base station, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that the source VOG is set up using the network address of video resource service device with the terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Sending module, for sending the switching response message to target VOG, wherein, the controlling transmission information of first connection and the controlling transmission information of second connection are respectively used to set up the transmission control context of first connection and the second connection on the target VOG, and the information of the video breakpoint is used to indicate that the target VOG continues to transmit video resource from the video breakpoint to the terminal.

17th, a kind of video optimized gateway, it is characterised in that including：

Receiving module, the handoff response that target BS is sent is received for receiving the switching notice of target BS transmission, the handoff response includes the information of the controlling transmission information of the first connection, the controlling transmission information of the second connection and video breakpoint, described first is connected as the connection that source VOG is set up using the network address of video resource service device with terminal, and described second is connected as the connection that the source VOG is set up using the network address of the terminal with the video resource service device；

Continue transport module, transmission control information for the transmission control information according to the described first connection and second connection sets up first connection and the transmission of the second connection controls context, is continued to transmit video resource to the terminal according to the information of the video breakpoint.

18th, video optimized gateway according to claim 17, it is characterised in that the information of the video breakpoint, including： URL of the video resource on the video resource service device, to the terminal transmission content bytes range；

Or,

URL of the video resource on the video resource service device, to the content time scope of the terminal transmission.

19th, the video optimized gateway according to claim 17 or 18, it is characterised in that the continuation transport module, specifically for：

Whether inspection Check local caches have the corresponding video information of information of the video breakpoint；If inspection Check results are not have the video information, video request is then sent to video resource service device according to the information of the video breakpoint, obtain the video resource corresponding to the information with the video breakpoint, and video response is returned to terminal, the video response includes the video resource；

Or,

If inspection Check results is have the video information, video response is returned to the terminal, the video response includes the video resource corresponding to the information with the video breakpoint obtained from local cache.

20th, the video optimized gateway according to claim any one of 17-19, it is characterised in that also include：

Module is removed, after terminating in video playback, the connection that the first connection transmission control information, the second connection transmission control information and video resource service device and terminal according to included in the handoff response are set up is removed.

21st, a kind of video cache switching processing system, it is characterised in that including：Claim_n-₁₄The video optimized gateway described in the base station described in video optimized gateway, claim 15, the base station described in claim 16 and claim any one of 17-20 described in any one.