CN102356615A - Method for switching channel, terminal equipment and channel switching server - Google Patents
Method for switching channel, terminal equipment and channel switching server Download PDFInfo
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Abstract
A method for switching channel is disclosed in the embodiments of the present invention, which includes the steps of: sending a switching request message to a channel switching server to make the channel switching server to stop or continue sending data stream of a current channel according to the switching request message, and make the channel switching server to send data stream of a new channel, wherein the switching request message at least includes channel information on the new channel and channel process information. The terminal equipment and the channel switching server are disclosed in the embodiments of the present invention, they can shorten information interactivity time and information processing time during the process of channel switching, so increase the speed of channel switching.
Description
A kind of switching method of channel, terminal device and channel switching server technical field
The present embodiments relate to communication technical field, more particularly to a kind of switching method of channel, terminal device and channel switching server.Background technology
QoE is to go out to send from the angle of domestic consumer's experience to evaluate a kind of quality of service, among IPTV service, the speed of channel switch is to influence a QoE important indicator, and the time of channel switch is to send the time that channel switching instruction watches new channel to user from user.After user sends channel switching instruction to client device, STB sends the request of a channel switch to the server for providing channel switching service, the server is received after the request of user, request to user is responded, the service of new channel is provided a user by the form of unicast, after user's access unicast for a period of time, then provide the user by multicast server the service of the channel.Channel switch request order is sent from client device to receive to client device in information this period of new channel, client device and the server of offer channel switching service need to carry out the interaction of some information, the interaction of these information is required for the regular hour to complete, and because IP network basis bodies have Lost bags, data damage is had during the server of client device and offer channel switching service is interacted with data transfer.
In order to shorten the time of channel switch and ensure the quality of channel switch, prior art user end to server first sends a fast channel handover request, server is received after request, in the form of unicast to server send channel description information, then (or) send data flow load simultaneous information and load information.After a period of time, client sends IGMP to multicast server and asked, and request adds multicast group, and multicast group sends the Multicast Flows of channel to client, and client is received after Multicast Flows, by the Multicast Flows of reception
The sequence number information of first RTP bag is sent to channel switch unicast server, and the server determines whether to stop the transmission of unicast stream according to the sequence number information of first RTP bag of the Multicast Flows received.
Inventor has found that prior art at least has the following disadvantages during the present invention is realized：If user sends channel switching instruction again, the client meeting separately send request message for leaving unicast and the channel request message that please be look for novelty, i.e. client need to twice be interacted with server, so as to which the bandwidth of up-link can be increased, and client and server will two messages of continuous processing, if client needs to send multiple channel switch request, server needs to carry out multiple interact with client, the speed for the time interval influence fast channel switching being accomplished by between more bandwidth, and two messages.
The content of the invention
The embodiment of the present invention provides a kind of switching method of channel, terminal device and channel switching server, to improve the speed of channel switch.
According to an aspect of the present invention there is provided a kind of switching method of channel, including：
Handover request message is sent to channel switching server, so that the channel switching server stops or continued to send the data flow of current channel according to the handover request message, and make the data flow of the channel switching server transmission new channel, wherein, the processing information of channel information and channel of the handover request message at least including new channel.
According to another aspect of the present invention, a kind of switching method of channel is also provided, including：
The handover request message that receiving terminal apparatus is sent；
The handover request message is parsed, the channel information of new channel and the processing information of channel is at least obtained；The data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the terminal device is flow to according to the data that the channel information of the new channel sends new channel.
According to another aspect of the present invention, a kind of terminal device is also provided, including：
Behavioral value module, for detecting whether receiving the switching channels information of user；
Hand-off process module, during switching channels information for detecting the user when the behavioral value module, handover request message is sent to channel switching server, so that the channel switching server stops or continued to send the data flow of current channel according to the handover request message, and make the data flow of the channel switching server transmission new channel, wherein, the processing information of channel information and channel of the handover request message at least including new channel..
According to another aspect of the present invention, a kind of channel switching server is also provided, including：
Message processing module, the handover request message sent for receiving terminal apparatus, and the handover request message is parsed, at least obtain the channel information of new channel and the processing information of channel；
Sending module, the data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the terminal device is flow to according to the data that the channel information of the new channel sends new channel.
Using the switching method, terminal device and channel switching server of the channel of above-mentioned offer, channel information and the handover request message of the processing information of current channel including new channel are sent to the data for sending current channel to channel switching server with the stopping of notification channel switching server or continuation and flow to the terminal device, and send new channel data and flow to the terminal device, information exchange time and the message processing time in channel switch procedure can be shortened, the speed of channel switch is improved.
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 only some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the applied environment figure of the terminal device applied to channel switch of the embodiment of the present invention；Fig. 2 is the terminal device and the structural representation of channel switching server applied to channel switch of the embodiment of the present invention one；
Fig. 3 is the terminal device and the structural representation of channel switching server applied to channel switch of the embodiment of the present invention two；
Fig. 4 is the terminal device and the structural representation of channel switching server applied to channel switch of the embodiment of the present invention three；
Fig. 5 is the flow chart of the switching method of the channel of the embodiment of the present invention one；
Fig. 6 is the flow chart of the switching method of the channel of the embodiment of the present invention two；
Fig. 7 is the flow chart of the switching method of the channel of the embodiment of the present invention three.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only 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.
Fig. 1 is the applied environment figure of the terminal device applied to channel switch of the embodiment of the present invention.In the present embodiment, multicast server 10 is connected with channel switching server 20 and the communication of terminal device 30 respectively, channel switching server 20 is used for the channel switch request according to terminal device 30, and the unicast data stream of the channel after switching is sent to terminal device 30.Multicast server 10 is used for after terminal device 30 receives the unicast data stream of the transmission of channel switching server 20 for a period of time, the request for the addition multicast group that receiving terminal apparatus 30 is sent, and by multicast data streams to terminal device 30, and multicast data streams to channel switching server 20 are stored.In the present embodiment, terminal device 30 can be set top box.
Fig. 2 is the terminal device and the structural representation of channel switching server applied to channel switch of the embodiment of the present invention one.In the present embodiment, terminal device 30 receives the unicast data stream that channel server 20 is sent.Channel switching server 20 includes channel switch data memory module 200, media key message acquisition module 210, sending module 220, message processing module 230.Terminal device 30 includes data reception module 300, data flow monitoring modular 310, hand-off process module 320, behavioral value module 330.
In the present embodiment, data reception module 300 is used to receive the multicast data stream and/or unicast data stream for meeting user's broadcasting channel.In the present embodiment, after 30 switching channels of terminal device, the unicast data stream that channel switching server 20 is sent was received before this, after unicast data stream is received for a period of time, the multicast data stream of the transmission of multicast server 10 is received again, now, unicast data stream can still be received, primarily to making switching channels server 20 and the data flow of the same channel of the transmission of multicast server 10 reach synchronization, again after a period of time, reach after synchronization, because channel switching server 20 stops to send after the unicast data stream of the channel, now terminal device 30 receives the multicast data stream that multicast server 10 is sent, but channel switching server 20 can still send some other services or the data of business about channel, such as, when vicious data flow in the multicast data stream for the channel that multicast server 10 is sent, can notification channel switching server 20 resend partial data stream about the channel.
Data flow monitoring modular 310 is used for the data cases received in Monitoring Data receiving module 300, i.e., the data flow received in Monitoring Data receiving module 300 is unicast data stream or multicast data stream, and the data bit rate of data flow received etc..In the present embodiment, unicast data stream is received in the detection of data flow monitoring modular 310 data reception module 300.
In the present embodiment, when user needs to switch current channel, the message of switching channels can be produced.In the present embodiment, it can also be multiple channels that the current channel of user, which can be one,.There is following several situations in switching channels information：If current channel is one, user can stop current channel, also may be used
To retain current channel, then increase one or more channels that need to be played newly, one or more new channels are further added by this basis；If current channel is multiple, user can stop one or more of current multiple channels, also retain one or more of current multiple channels, can also increase one or more channels that need to be played newly.
In the present embodiment, behavioral value module 330 is for detecting whether receive the switching channels information of user's generation.Hand-off process module 320 is used for when behavioral value module 330 detects the switching channels information of user's generation, multiple channel informations are obtained from data reception module 300 according to switching channels information, handover request message is sent to channel switching server 20, so that the channel switching server 20 stops or continued to send the data flow of current channel, and make the data flow of the transmission of channel switching server 20 new channel.In the present embodiment, hand-off process module 320 sends one and handovers request to channel switching server, the processing information of channel information and channel of the handover request message at least including new channel.
In the present embodiment, when being one for current channel, if stopping current channel, the handoff request message includes the channel information of new channel and the processing information of channel, and the processing information of the channel includes the information for stopping sending the data flow of current channel；If stopping current channel, and it is newly-increased it is one or more need to play channel when, the handoff request message includes the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping sending the data flow of current channel, increase one or more channels that need to be played newly, be also as new channel；If retain current channel, it is newly-increased it is one or more need to play channel when, this includes the channel information of new channel and the processing information of channel including handoff request message, the processing information of the channel includes the information for retaining the data flow of current channel, in this case, channel switching server 20 is given tacit consent to when receiving the channel information of the new channel, to increase one or more channels that need to be played newly.
In the present embodiment, for current channel for it is multiple when, if stopping one or more of current channel, retain one or more of current multiple channels, the handoff request message includes the frequency of current channel
The processing information of road information, the channel information of new channel and channel, the processing information of the channel includes the information for stopping the data flow of channel, or the information of the data flow of reserved channel, the handover request message can also include the processing information of the channel information, the channel information of new channel and channel of current channel, the processing information of the channel include stop channel data flow information and start new channel data flow information, or reserved channel data flow information and start new channel data flow information；If stopping one or more of current channel, retain one or more of current multiple channels, and it is newly-increased it is one or more need to play channel when, handoff request message includes the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel, or the information of the data flow of reserved channel, the handover request message can also include the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the information of the data flow of reserved channel and the data flow of startup new channel.
In the present embodiment, the channel information includes the mark of channel（SSRC ).In the present embodiment, hand-off process module 320 is additionally operable to the data cases received in the data reception module 300 according to the detection of data flow monitoring modular 310, and handover request message is sent to channel switching server 20.
I.e., handoff request message includes the channel information of new channel and the processing information of channel, the channel information includes the mark of channel, and when the processing information of the channel includes stopping sending the information of the data flow of current channel, the channel information includes the mark of channel.
The data reception module 300 is additionally operable to receive the data flow for the new channel that the channel switching server is sent.The channel information of new channel and the processing information of channel are included when the handoff request message, the channel information includes the mark of channel, when the processing information of the channel includes retaining the information of the data flow of current channel, the data reception module 300 is additionally operable to continue to the channel switching server 20 to send
Current channel data flow, and receive the data flow for the new channel that the channel switching server 20 is sent.When the handoff request message includes the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel, or the data flow of reserved channel information when, or the handoff request message includes the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the data flow of reserved channel and start new channel data flow information when, the data reception module 300 is additionally operable to continue to the data flow of the current channel retained the need for the channel switching server 20 is sent, and receive the data flow for the new channel that the channel switching server 20 is sent.
In the present embodiment, handover request message can have different message formats to represent, be described individually below：
The first, handover request message can be represented with following message format： I header: |
I user: ID |
I media source ID | wherein, user ID are used for representing the ID of active user, media source ID represent the channel information of new channel, if this media source id field in current message has data value, then represent to need to stop current channel, and start new channel, that is, message carries the processing information of the channel information, current channel and new channel of new channel simultaneously.
Second, handover request message can be represented with following message format：
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ I header |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I user ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I media source ID ( current ) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I media source ID ( new ) |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, media source ID (current) represent to stop the channel information of channel in current channel, media source ID (new) represent the channel information of new channel, when having data value in media source ID (current) field, then represent to need to stop current channel, when having data value in media source ID (new) field, then represent to start new channel, that is, message carries the processing information of the channel information, current channel and new channel of new channel simultaneously.In the present embodiment, illustrated with RTCP message, it is as follows：
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I rtcp header |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I Extens ions |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
In above-mentioned RTCP messages, rtcp header are rfc4585 message format, and extensions fields are an extended field, wherein, rtcp header can be represented with following form：
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I V=2 I P I FMT I PT | l e ngt h |
I S S RC o f packet s e nde r |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I S S RC o f me di a s o u rce |
+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+wherein, SSRC of packet sender represent the sender of current message, that is the mark of terminal device 30, compared with the first or second of message, the field is corresponding with the use ID fields in the first or second of message；SSRC of media source represent the channel information of new channel, the SSRC of media source fields are corresponding with the media source id fields in the first message, or including the media source ID (current) in second of message or media source ID (new) field, SSRC is
―
Synchronization source, P synchronisation source,.
In the present embodiment, still to be illustrated in RTCP messages, the RTCP messages also have several situations, are described individually below：
The first RTCP message:
1
+ -+-+-+- ■+- ■+-+- ■+- ■+- ■+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+_ ■+- ■+- ■+- ■+- ■+- ■+- ■+- ■+
1 SSRC of media source ( cuuuen ) 1
+ -+-+-+- ■+- ■+-+- ■+- ■+- ■+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+_ ■+- ■+- ■+- ■+- ■+- ■+- ■+- ■+
1 SSRC of media source ( new) 1
+ -+-+-+- ■+- ■+-+- ■+- ■+- ■+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+_ ■+- ■+- ■+- ■+- ■+- ■+- ■+- ■+
1 Extens ions 1
+ -+-+-+- ■+- ■+-+- ■+- ■+- ■+-+the ■ of -+- ■+one+one+one+one+one+one+one+one+one+one+one+one+one+- ■+- ■+- ■+- ■+- ■+- ■+- ■+wherein, SSRC of media source (current) represent to stop the channel information of channel in current channel, SSRC of media source (new) represent the channel information of new channel, when having data value in SSRC of media source (current) field, then represent to need to stop current channel, when having data value in SSRC of media source (new) field, then represent to start new channel, that is, message carries the channel information of new channel simultaneously, the processing information of current channel and new channel.
Or
SSRC of media source (current) represent the channel information of reserved channel in current channel, SSRC of media source (new) represent the channel information of new channel, when having data value in SSRC of media source (current) field, then represent to need to retain current channel, when having data value in SSRC of media source (new) field, then represent to start new channel, that is, message carries the channel information current channel of new channel and the processing information of new channel simultaneously.Second of RTCP message:
+ -+-+-+-+-+-+-+-+-+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+one+-+-+-+-+- SSRC of packet of+- ■+- ■+1 sender: 1
+ -+-+-+-+-+-+-+-+-+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+one+-+-+-+-+-+- ■+- ■+
1 SSRC of media source ( new) 1
+ -+-+-+-+-+-+-+-+-+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+one+-+-+-+-+-+- ■+- ■+
1 SSRC of media source ( cuuuen ) 1
+ -+-+-+-+-+-+-+-+-+-+-+- ■+one+one+one+one+one+one+one+one+one+one+one+one+one+-+-+-+-+-+- ■+- ■+
1 Extens ions 1
+- +- +- +- +- +- +- +- +- +-+-+- +- +- +- +- +- +- ■+- ■+
Wherein, SSRC of media source (current) fields and SSRC of media source (new)
+
The order of field can be exchanged.
The third RTCP message：
+
Wherein, SSRC of media source can represent the channel information of channel, media mark represent the processing information of channel, media mark can be indicated with 0 or 1, if media mark fields are 010101...0101, wherein, from left to right start, first digit, i.e. 0, corresponding to first SSRC of media source field in the third RTCP message, assuming that 0 represents to stop the corresponding channel of channel information in SSRC of media source fields, it can also be represented to retain or open the corresponding channel of channel information in SSRC of media source fields with 0, second SSRC of media source field that second digit corresponds in the third RTCP message, the like, certainly, it can also be represented to retain or open the corresponding channel of channel information in SSRC of media source fields with 1, it can also determine
Justice is represented to stop the corresponding channel of channel information in SSRC of media source fields with 1, in embodiments of the present invention, do not limit, that is, message carries the processing information of the channel information, current channel and new channel of new channel simultaneously.
4th kind of RTCP message：
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I V=2 I P | FHT I PT | length |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I SSRC of packet sender: |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I length of current media | length of new media |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I SSRC of media source |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I SSRC of media source |
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+-+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
I Extens ions |
+ -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+wherein,Length of current media represent the processing information for needing to stop current channel,Or retain the processing information of current channel,Length of new mdeia represent the processing information of new channel,I.e. length of current media fields represent to stop or retain the corresponding channel of channel information in N number of SSRC of media source fields in the 4th kind of RTCP message,N is length of current media value,Length of new media fields represent to open the corresponding channel of channel information in M SSRC of media source field in the 4th kind of RTCP message,M is length of new media value,It should be noted that,When N number of SSRC of media source fields are come after length of current media fields and length of new media fields,This M SSRC of media source field includes the N+l SSRC of media source field, the N+M SSRC of media source field.In the present embodiment, when N number of SSRC of media source fields are come after length of current media fields and length of new media fields, length of new media fields represent to open the 4th kind of RTCP
The corresponding channel of channel information in M SSRC of media source field in message, length of current media fields represent to stop or retain the corresponding channel of channel information in N number of SSRC of media source fields in the 4th kind of RTCP message, it should be noted that, this N number of SSRC of media source field includes the M+1 SSRC of media source field, the N+M SSRC of media source field, that is, message carries the channel information of new channel and the processing information of channel simultaneously.In this embodiment, length of current media can be with default, the corresponding channel of channel information that so length of new media fields represent to open in the corresponding channel of channel information in M SSRC of media source field in the 4th kind of RTCP message, remaining SSRC of media source fields retains or stopped.Or in this embodiment, length of new media can be with default, so length of current media fields represent to stop or retain the corresponding channel of channel information in N number of SSRC of media source fields in the 4th kind of RTCP message, the corresponding processing information for opening new channel of channel information in remaining SSRC of media source fields, that is, message carry simultaneously new channel channel information and, the processing information of current channel and new channel.
Another sunset is foretold, in the present embodiment, length of current media fields and length of new media fields do not have tandem, or, during using length of current media fields and length of new media fields as a field, this field does not have tandem with SSRC of media source fields.
In the present embodiment, channel switch data memory module 200 is used for the key message of the media for the multicast data stream and data flow for storing the transmission of multicast server 10.Media key message acquisition module 210 is used for the description information for obtaining the key message of the media of the multicast data stream of the storage of channel switch data memory module 200.In the present embodiment, the description information of the key message of media can include but not limit herein below：The position of the random access points of the channel of media, the position of the description information required for channel normal play, wherein, when the position of the random access points of the channel of media can be random access points, to send the starting bag of data flow
Sequence number, the description information required for channel normal play can be the mark and the type of data flow for all data that the channel is included, and can also parse the information required for various data syn-chronizations in the various parameters information required for data flow, channel.
Message processing module 230 is used for the handover request message that receiving terminal apparatus 30 is sent, and parses the handover request message, at least obtains the channel information of new channel and the processing information of channel.I.e., the channel information of new channel and the processing information of channel are included when message processing module 230 parses the handoff request message, the processing information of the channel includes the information for stopping sending the data flow of current channel, or when retaining the information of data flow of current channel, sending module 220 is notified to stop sending the unicast data stream of one or more current channels, or continue to send the unicast data stream of one or more current channels, and start to send the unicast data stream of one or more new channels.
In the present embodiment, for current channel be one when, sending module 220 is additionally operable to when message processing module 230 parses the processing information that the handover request message is the channel information and current channel that include new channel, the processing information of the channel includes the information for stopping sending the data flow of current channel, or when retaining the information of data flow of current channel, continue to send the data flow of current channel according to the data flow of the information stopping transmission current channel for stopping sending the data flow of current channel or according to the information of the data flow of the reservation current channel, and the description information of the media key message of the new channel in the media key message acquisition module 210 is obtained according to the channel information of the new channel, and the key message and the traffic flow information of random access points of the new channel in the channel switch data memory module 200 are obtained according to the description information, sent by unicast data stream to the terminal device 30.In the present embodiment, the multicast data stream stored in channel switch data memory module 200 is transport stream（Transport stream, TS), the traffic flow information includes audio, video, data etc., the key message of new channel includes the PSI information of channel and the random access points point position of channel, every IDR frame position or I frame positions, and the decoding of channel are joined
Manifold SPS, PPS etc..
For current channel for it is multiple when, sending module 220 is additionally operable to when message processing module 230 obtains the processing information of the channel information, the channel information of new channel and channel of current channel, the processing information of the channel include stop channel data flow information, or the data flow of reserved channel information.In the present embodiment, if necessary to stop during one or several in current channel, the channel information of current channel includes, it is necessary to the channel information of the current channel stopped, or needs the channel information of current channel retained.Stop sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel, the description information of the media key message of the new channel in the media key message acquisition module 210 is obtained according to the channel information of the new channel, and the key message and the traffic flow information of random access points of the new channel in the channel switch data memory module 200 are obtained according to the description information, sent by unicast data stream to the terminal device 30.
Sending module 220 is additionally operable to when message processing module 230 obtains the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the data flow of reserved channel and start new channel data flow information when, stop sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel, and the description information of the media key message of the new channel in media key message acquisition module 210 described in the channel information and the acquisition of information of the data flow of startup new channel according to the new channel, and the key message and the traffic flow information of random access points of the new channel in the channel switch data memory module 200 are obtained according to the description information, sent by unicast data stream to the terminal device 30.
Fig. 3 is the terminal device and the structural representation of channel switching server applied to channel switch of the embodiment of the present invention two.In the present embodiment, terminal device 30 receives the multicast data stream that the unicast data stream and multicast server 10 of the transmission of channel switching server 20 are sent, i.e. in the present embodiment, unicast data stream and group multicast data stream are received in the detection data reception module 300 of data flow monitoring modular 310, primarily to making switching channels server 20 and the data flow of the same channel of the transmission of multicast server 10 reach synchronization.When user needs to switch current channel, when can produce the information of switching channels, on the one hand terminal device 30 sends the information of switching channels to channel switching server 20, now as Fig. 2 way, it is not described in detail herein, on the other hand sends the information for disconnecting the multicast data stream for needing to switch current channel to multicast server 10 so that multicast server 10 stops sending needs switching current channel multicast data stream.
Fig. 4 is the terminal device and the structural representation of channel switching server applied to channel switch of the embodiment of the present invention three.In the present embodiment, Fig. 4 and Fig. 3 difference is, the data flow for the same channel that switching channels server 20 and multicast server 10 are sent is reached after synchronization, terminal device 30 receives the multicast data stream that multicast server 10 is sent, the unicast data stream of the transmission of channel switching server 20 is not received, but channel switching server 20 can still send some other services or the data of business about channel, such as, when vicious data flow in the multicast data stream for the channel that multicast server 10 is sent, can notification channel switching server 20 resend partial data stream about the channel.I.e. in the present embodiment, multicast data stream is received in the detection of data flow monitoring modular 310 data reception module 300.In the present embodiment, the one side of terminal device 30 is also the information for sending switching channels to channel switching server 20, now as Fig. 2 way, it is not described in detail herein, in the present embodiment, it is necessary to which the current channel of switching and/or the data flow for continuing to send the current channel that need not switch are to send the data flow that data are lost about wrong Huo person Lost；On the other hand the information for disconnecting the multicast data stream for needing to switch current channel is sent to multicast services
Device 10 is so that multicast server 10 stops sending needs switching current channel multicast data stream.Terminal device provided in an embodiment of the present invention is when carrying out channel switch, one handover request message is sent to channel switching server, a handover request message is sent to channel switching server, the processing information of channel information and current channel of the handover request message at least including new channel, stop or continue to send the data flow of current channel with notification channel switching server, and make the data flow of the channel switching server transmission new channel, inform that channel switching server needs the data flow for stopping sending current channel in a handover request message, and send the data flow of new channel, or continue the data flow of transmission current channel and send the data flow of new channel, information exchange time and the message processing time in a channel switch procedure can be shortened, improve the speed of channel switch, and need the request message that separately send leaves unicast to be compared with the channel request message that please be look for novelty with prior art, increase the bandwidth of link caused by prior art meeting, and present example is disposably distributed, to reduce the number of times of interaction, so as to reduce the information required for interaction, to the greatest extent without increasing the bandwidth of up-link, and also reduce header expense when information is sent in channel switch.
Fig. 5 is the flow chart of the switching method of the channel of the embodiment of the present invention one.
In the present embodiment, the method for fast channel is applied in the case of only receiving unicast data stream.Step S500, detects whether the switching channels information of user.In the present embodiment, it can also be multiple channels that the current channel of user, which can be one,.There is following several situations in switching channels information：If current channel is one, user can stop current channel, can also retain current channel, then increase one or more channels that need to be played newly, and one or more new channels are further added by this basis；If current channel is multiple, user can stop one or more of current multiple channels, also retain one or more of current multiple channels, can also increase one or more channels that need to be played newly.
Step S502, when detecting the switching channels information of user, sends according to the switching channels information
Handover request message is to channel switching server, the processing information of channel information and channel of the handover request message at least including new channel.In the present embodiment, a handover request message is sent to channel switching server.If stopping current channel, the handoff request message includes the channel information of new channel and the processing information of channel, and the processing information of the channel includes the information for stopping sending the data flow of current channel；If stopping current channel, and it is newly-increased it is one or more need to play channel when, the handoff request message includes the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping sending the data flow of current channel, increase one or more channels that need to be played newly, be also as new channel；If retain current channel, it is newly-increased it is one or more need to play channel when, the handoff request message includes the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for the data flow for stopping or retaining current channel, in this case, channel switching server acquiescence is when receiving the channel information of the new channel, to increase one or more channels that need to be played newly.
In the present embodiment, for current channel for it is multiple when, if stopping one or more of current channel, retain one or more of current multiple channels, the handoff request message includes the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel, or the information of the data flow of reserved channel, the handover request message can also include the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the information of the data flow of reserved channel and the data flow of startup new channel；If stopping one or more of current channel, retain one or more of current multiple channels, and it is newly-increased it is one or more need to play channel when, handoff request message includes the processing information of the channel information of current channel, the channel information of new channel and channel, the processing information of the channel includes the information for stopping the data flow of channel, or the information of the data flow of reserved channel, the handover request message can also include the channel information of current channel, the channel of new channel is believed
The information of the information of the data flow of the processing information of breath and channel, the information of the information and the data flow for starting new channel of data flow of the processing information including stopping channel of the channel, or reserved channel and the data flow of startup new channel.
Step S504, parses the handover request message, at least obtains the channel information of new channel and the processing information of channel；
Step S506, the data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the terminal device is flow to according to the data that the channel information of the new channel sends new channel.
In the present embodiment, step S506 includes following several situations：
When the channel information and the processing information of channel that obtain new channel, the processing information of the channel includes the information for stopping sending the data flow of current channel, or when retaining the information of data flow of current channel, continue to send the data flow of current channel according to the data flow of the information stopping transmission current channel for stopping sending the data flow of current channel or according to the information of the data flow of the reservation current channel；The description information of the media key message of the new channel is obtained according to the channel information of the new channel；The key message of the new channel and the traffic flow information of random access points are obtained according to the description information, is sent by unicast data stream to the terminal device.
When the processing information for the channel information, the channel information of new channel and channel for obtaining current channel, the processing information of the channel includes the information for stopping the data flow of channel, or the data flow of reserved channel information when, stopped sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel, or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel；The description information of the media key message of the new channel is obtained according to the channel information of the new channel；According to the key message of the description information acquisition new channel and at random
The traffic flow information of access point, is sent to the terminal device by unicast data stream.
When the processing information for the channel information, the channel information of new channel and channel for obtaining current channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the data flow of reserved channel and start new channel data flow information when, stopped sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel, or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel；The description information of the media key message of new channel according to the channel information of the new channel and the acquisition of information for the data flow for starting new channel；The key message of the new channel and the traffic flow information of random access points are obtained according to the description information, is sent by unicast data stream to the terminal device.The key message of the new channel and the traffic flow information of Stochastic accessing are obtained according to the description information, is sent by unicast data stream to the terminal device.
Fig. 6 is the flow chart of the switching method of the channel of the embodiment of the present invention two.
In the present embodiment, Fig. 5 and Fig. 6 difference exists, and Fig. 6 is applied in the case of receiving unicast data stream and multicast data stream.In the present embodiment, step S600, S604, S606 in Fig. 6 are identical with step S500, S504, S506 in Fig. 5, and description is not repeated herein.Because Fig. 6 is applied in the case of receiving unicast data stream and multicast data stream, the difference of step S602 and the step S502 in Fig. 5 in Fig. 6 are, in step S602, also need to send the request for disconnecting multicast data stream to multicast server, so that multicast server, which disconnects, sends multicast data stream.In the present embodiment, the information of the disconnection multicast data stream needs to switch the information of the multicast data stream of current channel for disconnection.
Fig. 7 is the flow chart of the switching method of the channel of the embodiment of the present invention three.
In the present embodiment, Fig. 7 and Fig. 6 difference exists, and Fig. 7 is applied to receive the multicast data stream about channel, and other of the relevant channel of receiving portion are serviced or the data of business, such as, when in multicast data stream
, it is necessary to resend the unicast data stream about this Cuo Wu Huo Lost data lost during the data that wrong Huo Lost lose.In the present embodiment, step S700, S702, S704, S706 in Fig. 7 are identical with step S600, S602, S604, S606 in Fig. 6, and description is not repeated herein.The difference of step S706 and the step S606 in Fig. 6 in Fig. 7 is, the stopping in the step S706 in Fig. 7 send the data flow of the current channel for needing to switch and continuing send the current channel that need not switch data flow be it is relevant it is wrong miss or Lost mistake data data flow.
The switching method of channel provided in an embodiment of the present invention, one handover request message is sent to channel switching server, a handover request message is sent to channel switching server, the processing information of channel information and current channel of the handover request message at least including new channel, stop or continue to send the data flow of current channel with notification channel switching server, and make the data flow of the channel switching server transmission new channel, inform that channel switching server needs the data flow for stopping sending current channel in a handover request message, and send the data flow of new channel, or continue the data flow of transmission current channel and send the data flow of new channel, information exchange time and the message processing time in a channel switch procedure can be shortened, improve the speed of channel switch, and need the request message that separately send leaves unicast to be compared with the channel request message that please be look for novelty with prior art, increase the bandwidth of link caused by prior art meeting, and present example is disposably distributed, to reduce the number of times of interaction, so as to reduce the information required for interaction, to the greatest extent without increasing the bandwidth of up-link, and also reduce header expense when information is sent in channel switch.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, computer program is can be by instruct the hardware of correlation to complete, described program can be stored in a computer read/write memory medium, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic disc, CD, read-only memory（Read-Only Memory, ROM) or random access memory（Random Access Memory, RAM) etc..
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited, although the present invention is described in detail with reference to preferred embodiments, it will be understood by those within the art that：It can still modify or equivalent substitution to technical scheme, and these modifications or equivalent substitution can not also make the spirit and scope of amended technical scheme disengaging technical solution of the present invention.
Claims (17)
- Claim1st, a kind of switching method of channel, it is characterised in that including：Handover request message is sent to channel switching server, so that the channel switching server stops or continued to send the data flow of current channel according to the handover request message, and make the data flow of the channel switching server transmission new channel, wherein, the processing information of channel information and channel of the handover request message at least including new channel.2nd, according to the method described in claim 1, it is characterised in that also include：Receive the channel data stream that the channel switching server is sent.3rd, according to the method described in claim 1, it is characterized in that, the handoff request message includes the channel information of new channel and the processing information of channel, the channel information includes the mark of channel, the processing information of the channel includes the information for stopping sending the data flow of current channel, or retains the information of the data flow of current channel.4th, according to the method described in claim 1, it is characterized in that, the handoff request message includes the processing information of the channel information of current channel, the channel information of new channel and channel, the processing information of the channel includes the information for stopping the data flow of channel, or the information of the data flow of reserved channel, the channel information includes the mark of channel.5th, according to the method described in claim 1, it is characterized in that, the handoff request message includes the processing information of the channel information of current channel, the channel information of new channel and channel, the processing information of the channel include stop channel data flow information and start new channel data flow information, or reserved channel data flow information and start new channel data flow information.6th, a kind of switching method of channel, it is characterised in that including：The handover request message that receiving terminal apparatus is sent； The handover request message is parsed, the channel information of new channel and the processing information of channel is at least obtained；The data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the terminal device is flow to according to the data that the channel information of the new channel sends new channel.7th, the step of processing information of method according to claim 6, it is characterised in that the parsing handover request message, at least channel information of acquisition new channel and channel, includes：The channel information of new channel and the processing information of channel are obtained, the processing information of the channel includes the information for stopping sending the data flow of current channel, or retains the information of the data flow of current channel, and the channel information includes the mark of channel.8th, method according to claim 7, it is characterized in that, the data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the step of data for sending new channel according to the channel information of the new channel flow to the terminal device includes：Continue to send the data flow of current channel according to the data flow of the information stopping transmission current channel for stopping sending the data flow of current channel, or according to the information of the data flow of the reservation current channel；The description information of the media key message of the new channel is obtained according to the channel information of the new channel；The key message of the new channel and the traffic flow information of random access points are obtained according to the description information, is sent by unicast data stream to the terminal device.9th, the step of processing information of method according to claim 6, it is characterised in that the parsing handover request message, at least channel information of acquisition new channel and channel, includes：The information of the processing information of the channel information, the channel information of new channel and channel of current channel, the information of data flow of the processing information including stopping channel of the channel, or the data flow of reserved channel is obtained, the channel information includes the mark of channel.10th, method according to claim 9, it is characterised in that the processing according to the channel The data that information stops or continued to send channel flow to the terminal device, and the step of data for sending new channel according to the channel information of the new channel flow to the terminal device includes：Stopped sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel, or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel；The description information of the media key message of the new channel is obtained according to the channel information of the new channel；The key message of the new channel and the traffic flow information of random access points are obtained according to the description information, is sent by unicast data stream to the terminal device.11st, the step of processing information of method according to claim 8, it is characterised in that the parsing handover request message, at least channel information of acquisition new channel and channel, includes：Obtain the processing information of the channel information, the channel information of new channel and channel of current channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the data flow of reserved channel and start new channel data flow information, the channel information includes the mark of channel.12nd, method according to claim 11, it is characterized in that, the data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the step of data for sending new channel according to the channel information of the new channel flow to the terminal device includes：Stopped sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel, or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel；The description information of the media key message of new channel according to the channel information of the new channel and the acquisition of information for the data flow for starting new channel； The key message of the new channel and the traffic flow information of random access points are obtained according to the description information, is sent by unicast data stream to the terminal device.The key message of the new channel and the traffic flow information of Stochastic accessing are obtained according to the description information, is sent by unicast data stream to the terminal device.13rd, a kind of terminal device, it is characterised in that including：Behavioral value module, for detecting whether receiving the switching channels information of user；Hand-off process module, during switching channels information for detecting the user when the behavioral value module, handover request message is sent to channel switching server, so that the channel switching server stops or continued to send the data flow of current channel according to the handover request message, and make the data flow of the channel switching server transmission new channel, wherein, the processing information of channel information and channel of the handover request message at least including new channel.14th, terminal device according to claim 13, it is characterised in that also include：Data reception module, for receiving the channel data stream that the channel switching server is sent.15th, terminal device according to claim 13, it is characterized in that, handoff request message includes the channel information of new channel and the processing information of channel, the channel information includes the mark of channel, the processing information of the channel includes the information for stopping sending the data flow of current channel, or retains the information of the data flow of current channel.16th, terminal device according to claim 13, it is characterized in that, the handoff request message includes the processing information of the channel information of current channel, the channel information of new channel and channel, the processing information of the channel includes the information for stopping the data flow of channel, or the information of the data flow of reserved channel, the channel information includes the mark of channel.17th, terminal device according to claim 13, it is characterised in that the handoff request message includes the processing information of the channel information of current channel, the channel information of new channel and channel, the channel Processing information include stop channel data flow information and start new channel data flow information, or reserved channel data flow information and start new channel data flow information.18th, a kind of channel switching server, it is characterised in that including：Message processing module, the handover request message sent for receiving terminal apparatus, and the handover request message is parsed, at least obtain the channel information of new channel and the processing information of channel；Sending module, the data for stopping or continuing to send channel according to the processing information of the channel flow to the terminal device, and the terminal device is flow to according to the data that the channel information of the new channel sends new channel.19th, channel switching server according to claim 18, it is characterised in that also include：Channel switch data memory module, the key message of the media for storing channel data stream and data flow；Media key message acquisition module, the description information of the key message of the media for obtaining the data flow in the channel switch data memory module, wherein, the description information of the key message of the media includes：The position of the random access points of the channel of media, the position of description information required for channel normal play, when the position of the random access points of the channel of the media can be random access points, send the sequence number of the starting bag of data flow, the mark and the type of data flow for all data that description information required for the channel normal play is included by the channel, parse the information required for various data syn-chronizations in the various parameters information required for data flow, channel.20th, channel switching server according to claim 18, it is characterized in that, the sending module is additionally operable to obtain the channel information of new channel and the processing information of channel when the message processing module, the processing information of the channel includes the information for stopping sending the data flow of current channel, or when retaining the information of data flow of current channel, the channel information includes the mark of channel, stops sending current channel according to described The information of data flow stops sending the data flow of the current channel or continues to send the data flow of current channel according to the information of the data flow of the reservation current channel, and the description information of the media key message of the new channel in the media key message acquisition module is obtained according to the channel information of the new channel, and the key message and the traffic flow information of random access points of the new channel in the channel switch data memory module are obtained according to the description information, sent by unicast data stream to the terminal device.21, channel switching server according to claim 18, it is characterized in that, the sending module is additionally operable to when the message processing module obtains the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel, or the data flow of reserved channel information when, the channel information includes the mark of channel, stop sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel, and the description information of the media key message of the new channel in the media key message acquisition module is obtained according to the channel information of the new channel, and the key message and the traffic flow information of random access points of the new channel in the channel switch data memory module are obtained according to the description information, sent by unicast data stream to the terminal device.22, channel switching server according to claim 18, it is characterized in that, the sending module is additionally operable to when the message processing module obtains the channel information of current channel, the channel information of new channel and the processing information of channel, the processing information of the channel includes the information for stopping the data flow of channel and starts the information of the data flow of new channel, or the information of the data flow of reserved channel and start new channel data flow information when, the channel information includes the mark of channel, stop sending the data flow for stopping channel according to the information of data flow and the channel information of current channel of the stopping channel or continue to send the data flow of reserved channel according to the information of data flow and the channel information of current channel of the reserved channel, and according to described new The description information of the media key message of the new channel in media key message acquisition module described in the channel information of channel and the acquisition of information of the data flow of startup new channel, and the key message and the traffic flow information of random access points of the new channel in the channel switch data memory module are obtained according to the description information, sent by unicast data stream to the terminal device.23rd, the blunt texts of a kind of ^ applied to switching channels, it is characterised in that including：Each message at least carries the channel information of new channel and the processing information of channel, the data flow that the message is used to ask to stop or continues to send current channel, and asks to send the data flow of new channel.24th, message according to claim 23, it is characterized in that, the message carries the channel information of new channel and the processing information of channel, and the processing information of the channel includes the information for stopping sending the data flow of current channel, or retains the information of the data flow of current channel.25th, message according to claim 23, it is characterized in that, the message carries the processing information of the channel information, the channel information of new channel and channel of current channel, the processing information of the channel include stop channel data flow information, or the data flow of reserved channel information.26th, message according to claim 23, it is characterized in that, the message carries the processing information of the channel information, the channel information of new channel and channel of current channel, the processing information of the channel include stop channel data flow information and start new channel data flow information, or reserved channel data flow information and start new channel data flow information.
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| PCT/CN2009/070578 WO2010096966A1 (en) | 2009-02-27 | 2009-02-27 | Method for switching channel, terminal equipment and channel switching server |
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| CN102271281B (en) * | 2011-08-08 | 2013-07-10 | 华为技术有限公司 | Method and device for implementing FCC (fast channel change) |
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| US20070044130A1 (en) * | 2005-08-16 | 2007-02-22 | Alcatel | System and method for implementing channel change operations in internet protocol television systems |
| US20070107024A1 (en) * | 2005-11-10 | 2007-05-10 | Scientific-Atlanta, Inc. | Atomic channel changes in a switched digital video system |
| CN101252454B (en) * | 2008-03-10 | 2011-04-20 | 中国电信股份有限公司 | Client end video frequency playing system and method |
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