CN1859568A - Method, system and device for realizing multicast program switching - Google Patents
Method, system and device for realizing multicast program switching Download PDFInfo
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- CN1859568A CN1859568A CNA2006100574590A CN200610057459A CN1859568A CN 1859568 A CN1859568 A CN 1859568A CN A2006100574590 A CNA2006100574590 A CN A2006100574590A CN 200610057459 A CN200610057459 A CN 200610057459A CN 1859568 A CN1859568 A CN 1859568A
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Abstract
The present invention relates to realizing multicasting program source switching method. It contains configuring main, standby multicasting program source to subscriber equipment (UE), establishing corresponded channel identify relation between main multicasting program source and standby multicasting program source, when unable normal receiving main multicasting program source channel content, according to said corresponded relation to switch to standby program source and controlling intermediate network equipment switching to standby multicasting program source. The present invention multicasting program source switching system includes intermediate network equipment, channel information record unit, multicasting program source switching administration unit, channel content processing unit. The present invention also discloses realizing multicasting program source switching device.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of mthods, systems and devices of realizing that multicast program switches.
Background technology
Along with development of Communication Technique, multimedia communication is popularized just gradually, the user can use subscriber equipment (UE) and the group broadcasting program origin system of supporting multimedia communication to carry out data communication, accepting increasing multimedia service from the group broadcasting program origin system, as: the video traffic by the broadband network carrying etc.Usually abbreviate the group broadcasting program origin system as multicast program.
Referring to Fig. 1, Fig. 1 is the multicast program switching principle figure of prior art.Among Fig. 1, communication network 130 links to each other with multicast program 110, standby multicast program 120, set-top box (STB) 140, STB 160 with main respectively, and STB 140 also links to each other with TV 150, and STB 160 also links to each other with TV 170.Wherein, the master all can provide channel content for STB 140, STB160 with multicast program 110 and standby multicast program 120, and main all identical with standby multicast program 120 available channel content with multicast program 110, as: the master all can provide the content of channel 1 to channel 10 to STB 140, STB 160 with multicast program 110 and standby multicast program 120.
Particularly, multicast program is to provide channel content by the intermediary network device that is connected between self and the STB to STB.Described intermediary network device is normally realized by routing devices such as switches, is used to receive the channel content from multicast program, and according to self route the channel content that will receive is set and sends to STB.
When using, standby multicast program 120 is in idle condition, do not send any channel content, the main multicast program 110 of using then sends channel content to STB 140, STB 160 respectively by communication network 130,140 pairs of channel content of receiving of STB carry out sending to TV 150 after the data processing, by the finish playing channel content of data processing of TV 150; Equally, 160 pairs of channel content of receiving of STB carry out sending to TV 170 after the data processing, by the finish playing channel content of data processing of TV 170.
When the master any fault occurs with multicast program 110, need take over main work by operating personnel by the standby multicast program 120 of external system commands for controlling at the group broadcasting program source with multicast program 110, provide channel content to STB 140, STB 160.Usually will be above-mentioned take over main situation of working by standby multicast program 120 and be called the multicast program switching with multicast program 110.
By the above as seen, whether carrying out the multicast program switching determines at the group broadcasting program source.Obviously, before finishing the multicast program switching, the multicast program that breaks down just can't normally provide channel content to UE, this makes UE finish normally receiving channels content of longer following period of time that multicast program switches breaking down to from multicast program, and the relatively poor group broadcasting program source switch method of this real-time has reduced user satisfaction.And, in order to know whether fault of multicast program, must monitoring system be set at multicast program, and the interface between exploitation monitoring system and the multicast program, switch with the control multicast program; This has obviously increased the enforcement difficulty of operation cost and multicast program switching.
Have again, if for the multicast program of UE service working properly, but fault has taken place in communicating to connect between multicast program and the UE, and the group broadcasting program source is can not carry out multicast program to switch, yet at this moment UE can not normally receive channel content from multicast program.Obviously, the group broadcasting program source switch method of using has only been considered the situation that multicast program itself breaks down at present, and do not consider the situation that communicating to connect between multicast program and the UE broken down, this in fact also is a kind of performance that multicast program switches the real-time difference, can cause user satisfaction to reduce equally in actual applications.
Also have, all will switch to standby multicast program when any fault occurring with multicast program,, also will switch to standby multicast program even therefore main transmission bearer with partial channel in the multicast program breaks down owing to the master; The utilance that this has obviously seriously reduced multicast program is unfavorable for that operator saves operation cost, even causes the significantly lifting of operation cost.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes that multicast program switches, and improves the real-time that multicast program switches, and improves user satisfaction.
Another object of the present invention is to provide a kind of realization multicasting program source switching system, improve the real-time that multicast program switches, improve user satisfaction.
A further object of the present invention is to provide a kind of realization multicast program device for switching, improves the real-time that multicast program switches, and improves user satisfaction.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of method that realizes that multicast program switches, be provided with main for user equipment (UE) in advance with multicast program and standby multicast program, and set up the channel identication corresponding relation between the pairing channel identication of channel that in leading, provides with multicast program and standby multicast program, this method is further comprising the steps of:
A. receive the UE that independently uses the multicast program channel content, determine that self and master use the communications status between the multicast program, and judge whether this communications status can support the normal channel content of independently using multicast program that receives of UE;
B. when definite UE can't normally receive the channel content of independently using multicast program, UE determines the standby multicast program that should switch to according to the channel identication corresponding relation of setting up, and the intermediary network device that is controlled to be the UE service switches to standby multicast program.
Among the step a,
Described UE determines that self and the method for leading with the communications status between the multicast program comprise:
The error rate/packet loss when UE calculating self reception is led with the channel content of multicast program, and the error rate/packet loss that obtains compared with the error rate that sets in advance/packet loss threshold value, if the error rate/packet loss threshold value is high relatively, UE determines that self and master are normal with the communications status between the multicast program; Otherwise UE determines that self and master are fault with the communications status between the multicast program;
Described determination methods comprises:
If UE and main be normal with the communications status between the multicast program, UE determines that this communications status can support self normal reception independently to use the channel content of multicast program; Otherwise UE determines that this communications status can't support self normal channel content of independently using multicast program that receives.
Among the step a, described UE determines that self and the method for leading with the communications status between the multicast program comprise:
Set in advance section and micro-receive threshold detection time, by its data volume of independently using multicast program of receiving in section in detection time of UE accumulative total, and with accumulative total data volume compare with the micro-receive threshold of setting, if the data volume of accumulative total is high relatively, UE determines that self and master are normal with the communications status between the multicast program; Otherwise UE determines that self and master are fault with the communications status between the multicast program;
Described determination methods comprises:
If UE and main be normal with the communications status between the multicast program, UE determines that this communications status can support self normal reception independently to use the channel content of multicast program; Otherwise UE determines that this communications status can't support self normal channel content of independently using multicast program that receives.
Among the step b, the method for described definite standby multicast program comprises:
UE in the described channel identication corresponding relation that is provided with, the pairing channel identication of sign of the main channel with multicast program that reads current reception, and the channel identication that reads is defined as the channel identication of the standby multicast program that will switch to.
Described channel identication shows as bearing identification, and then among the step b, the process that UE control intermediary network device is carried out described switching comprises:
UE sends report Report message to intermediary network device, and this message comprises the pairing bearing identification of standby multicast program channel that UE will switch at least; Intermediary network device reads the bearing identification that comprises in the Report message from UE, will send to UE from the channel content of the pairing carrying of this bearing identification.
Step b further comprises:
UE sends to described intermediary network device and leaves the Leave message, comprises the bearing identification that channel content comprised of independently using multicast program that UE can't normally receive in this message at least; Intermediary network device reads the bearing identification that comprises in the Leave message from UE, determines that the channel content of no longer the pairing transmission bearer of this bearing identification being sent sends to UE.
Described channel identication comprises bearing identification and multicast program sign, and then among the step b, the process that UE control intermediary network device is carried out described switching comprises:
UE sends the Report message to intermediary network device, comprises pairing bearing identification of standby multicast program channel and multicast program sign that UE will switch in this message at least; Intermediary network device reads from the bearing identification in the Report message of UE and multicast program sign, will identify pairing multicast program and the channel content sent by the pairing transmission bearer of this bearing identification sends to UE from this multicast program.
Further comprise in the described Report message: the bearing identification that channel content comprised of independently using multicast program that UE can't normally receive and multicast program sign;
Intermediary network device further reads described main bearing identification and the multicast program sign that is comprised with the multicast program channel content in this Report message, and definitely no longer will identify pairing multicast program and the channel content sent by the pairing transmission bearer of this bearing identification sends to UE from this multicast program.
Described master has identical channel content with multicast program with standby multicast program; Or have all different channel content.
Described main have identical channel content with multicast program with standby multicast program, and then described channel identication corresponding relation is to be based upon to lead with between the pairing channel identication of channel that the same channel content is provided in multicast program and the standby multicast program; Or be based upon main with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program;
Perhaps, described main have all different channel content with multicast program and standby multicast program, and then described channel identication corresponding relation is to be based upon to lead with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program.
Described UE is set-top box STB or main frame.
The invention also discloses a kind of realization multicasting program source switching system, can receive main channel content with multicast program and standby multicast program, this system comprises intermediary network device, and the channel information record unit, multicasting program source switching administration unit, the channel content processing unit that link to each other and all link to each other with intermediary network device successively;
Wherein, channel information record unit is used for preserving the channel identication corresponding relation of leading between the pairing channel identication of channel that provides with multicast program and standby multicast program;
The channel content processing unit is used for receiving from the channel content of the multicast program line data of going forward side by side by intermediary network device and handles, and the channel content that will finish data processing sends to the multicasting program source switching administration unit;
The multicasting program source switching administration unit is used for determining according to the channel content of receiving current and main with the communications status between the multicast program; And when determining normally to receive the channel content of independently using multicast program according to communications status, according to the definite standby multicast program that should switch to of the channel identication corresponding relation of preserving in the channel information record unit, and the control intermediary network device switches to standby multicast program from main with multicast program;
Intermediary network device is used for switching to standby multicast program from main with multicast program according to the control of multicasting program source switching administration unit, receives the channel content from standby multicast program.
The described corresponding relation that channel information record unit is preserved is to be based upon to lead with the channel identication corresponding relation between the pairing channel identication of channel that the same channel content is provided in multicast program and the standby multicast program; Or be based upon main with the channel identication corresponding relation between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program.
The channel content processing unit links to each other with display device, and the channel content that is further used for finishing data processing sends to display device.
Described display device is TV or computer display, is used to show the channel content of receiving.
Described channel information record unit, channel content processing unit and multicasting program source switching administration unit are arranged among the STB or in the main frame.
The invention also discloses a kind of realization multicast program device for switching, can receive main channel content with multicast program and standby multicast program, this device comprises channel information record unit, multicasting program source switching administration unit, the channel content processing unit that links to each other successively;
Wherein, channel information record unit is used for preserving the channel identication corresponding relation of leading between the pairing channel identication of channel that provides with multicast program and standby multicast program;
The channel content processing unit is used to receive from the channel content of the multicast program line data of going forward side by side and handles, and the channel content that will finish data processing sends to the multicasting program source switching administration unit;
The multicasting program source switching administration unit is used for determining according to the channel content of receiving current and main with the communications status between the multicast program; And when determining normally to receive the channel content of independently using multicast program according to communications status, according to the definite standby multicast program that should switch to of the channel identication corresponding relation of preserving in the channel information record unit, and the intermediary network device that control is connected switches to standby multicast program from main with multicast program.
This device is arranged in the set-top box.
Compared with prior art, the method that realization multicast program provided by the present invention switches, when definite UE can't normally receive the channel content of independently using multicast program, UE determines the standby multicast program that should switch to according to the channel identication corresponding relation of setting up, and the intermediary network device that is controlled to be its service switches to standby multicast program.Realization multicasting program source switching system provided by the present invention comprises intermediary network device, channel information record unit, multicasting program source switching administration unit, channel content processing unit; Each device cooperatively interacts, and guarantees that this device can switch to standby multicast program from main with multicast program in the time can't normally receiving the channel content of independently using multicast program.Equally, realization multicast program device for switching provided by the present invention can switch to standby multicast program from main with multicast program in the time can't normally receiving the channel content of independently using multicast program.
As seen, the enforcement difficulty that mthods, systems and devices provided by the invention all can cut operating costs and multicast program switches, and carry out the real-time that multicast program switches and be improved significantly, this makes that also user satisfaction is improved significantly; Have, owing to be not all will switch to other multicast program when any fault appears in multicast program, make the utilance of multicast program be significantly improved, this helps operator and saves operation cost.
Description of drawings
Fig. 1 is the multicast program switching principle schematic diagram of prior art;
Fig. 2 is the multicast program switching flow sketch of a preferred embodiment of the present invention;
Fig. 3 for realize Fig. 2 flow process based on the device schematic diagram.
Embodiment
Below in conjunction with drawings and the specific embodiments to the detailed description of the invention.
The method that realization multicast program provided by the invention switches, use multicast program and standby multicast program for UE is provided with the master in advance, and set up the channel identication corresponding relation with carefully broadcasting between the pairing channel identication of channel that provides in program source and the standby multicast program main; Determine that by UE self and master use the communications status between the multicast program, and judge whether this communications status can support the normal channel content of independently using multicast program that receives of UE; When definite UE can't normally receive the channel content of independently using multicast program, UE determined the standby multicast program that should switch to according to the channel identication corresponding relation of setting up, and the intermediary network device that is controlled to be its service switches to standby multicast program.
Realization multicasting program source switching system provided by the invention comprises intermediary network device, and the channel information record unit, multicasting program source switching administration unit, the channel content processing unit that link to each other and all link to each other with intermediary network device successively;
Wherein, channel information record unit is used for preserving the corresponding relation of leading between the pairing channel identication of channel that provides with multicast program and standby multicast program; The channel content processing unit is used for receiving from the channel content of the multicast program line data of going forward side by side by intermediary network device and handles, and the channel content that will finish data processing sends to the multicasting program source switching administration unit; The multicasting program source switching administration unit, be used for determining current and main with the communications status between the multicast program according to the channel content of receiving, and when determining normally to receive the channel content of independently using multicast program according to communications status, according to the definite standby multicast program that should switch to of the channel identication corresponding relation of preserving in the channel information record unit, and the control intermediary network device switches to standby multicast program from main with multicast program; Intermediary network device is used for switching to standby multicast program from main with multicast program according to the control of multicasting program source switching administration unit, receives the channel content from standby multicast program.
Realization multicast program device for switching provided by the invention comprises the channel information record unit, multicasting program source switching administration unit, the channel content processing unit that link to each other successively; Wherein, channel information record unit is used for preserving the channel identication corresponding relation of leading between the pairing channel identication of channel that provides with multicast program and standby multicast program; The channel content processing unit is used to receive from the channel content of the multicast program line data of going forward side by side and handles, and the channel content that will finish data processing sends to the multicasting program source switching administration unit; The multicasting program source switching administration unit is used for determining according to the channel content of receiving current and main with the communications status between the multicast program; And when determining normally to receive the channel content of independently using multicast program according to communications status, according to the definite standby multicast program that should switch to of the channel identication corresponding relation of preserving in the channel information record unit, and the intermediary network device that control is connected switches to standby multicast program from main with multicast program.
Multicast program switching principle of the present invention can realize that the network with Fig. 1 is an example below based on network shown in Figure 1, describes STB 140 and carries out the principle that multicast program switches.
Between the main pairing channel identication of channel that the same channel content is provided in multicast program 110 and standby multicast program 120, set up the channel identication corresponding relation in advance.Described channel identication can show as the bearing identification that is used to carry channel content, this bearing identification is generally multicast identifier, as: lead the content that is designated the multicast group carrying channel 1 of 239.255.10.1 with multicast program 110 usefulness, standby multicast program 120 usefulness are designated the content of the multicast group carrying channel 1 of 239.255.20.1; So just 239.255.10.1 is identified as main channel 1 with multicast program 110,, and between 239.255.10.1 and 239.255.20.1, set up corresponding relation channel 1 sign of 239.255.20.1 as standby multicast program 120.
Described channel identication also can comprise bearing identification and multicast program sign, this bearing identification is generally multicast identifier, as: main multicast program with multicast program 110 is designated A, and the main content that is designated the multicast group carrying channel 1 of 239.255.10.1 with multicast program 110 usefulness; The multicast program of standby multicast program 120 is designated B, and standby multicast program 120 also carries the content of channel 1 with the multicast group that is designated 239.255.10.1.So just with (A is 239.255.10.1) as main channel 1 sign with multicast program 110, with (B, 239.255.10.1) identify as the channel 1 of standby multicast program 120, and (A, 239.255.10.1) and (B sets up corresponding relation between 239.255.10.1).
In fact, no matter described channel identication comprises any content, as long as can distinguish the different channel of different multicast programs according to different channel identications, switches so that follow-up STB can carry out multicast program smoothly; And described channel identication corresponding relation is arranged among the STB 140 usually, can certainly be arranged in the intermediary network device, as long as need the communication entity of this channel identication corresponding relation to obtain smoothly.
Certainly, if have a plurality ofly with all identical standby multicast program of multicast program 110 available channel content with main, the channel identication corresponding relation of She Zhiing then will be expressed as a main channel identication of using a plurality of standby multicast programs of channel identication correspondence of multicast program so.
In concrete the application, suppose that the master just provides channel content by the intermediary network device in the communication network 130 to STB 140 with multicast program 110, STB 140 meeting periodicity or real-time ground determine that self and master use the communications status between the multicast program 110 so.It is multiple that concrete communications status determines that method has, determine that such as first kind of communications status method is: STB 140 uses prior aries and calculates the error rate when self receiving main channel content with multicast program 110, and the error rate that obtains compared with the error rate threshold value that sets in advance, if this error rate is lower than error rate threshold value, STB 140 determines that self and master are normal with the communications status between the multicast program 110, and this communications status can be supported the normal channel content of independently using multicast program 110 that receives of STB140; Otherwise STB 140 determines that self and master are fault with the communications status between the multicast program 110, and this communications status can't be supported the normal channel content of independently using multicast program 110 that receives of STB140.
Second kind of communications status determines that method is: STB 140 uses prior aries and calculates packet loss when self receiving main channel content with multicast program 110, and the packet loss that obtains compared with the packet loss threshold value that sets in advance, if this packet loss is lower than the packet loss threshold value, STB 140 determines that self and master are normal with the communications status between the multicast program 110, and this communications status can be supported the STB 140 normal channel content of independently using multicast program 110 that receive; Otherwise STB 140 determines that self and master are fault with the communications status between the multicast program 110, and this communications status can't be supported the STB 140 normal channel content of independently using multicast program 110 that receive.
The third communications status determines that method is: set in advance section and micro-receive threshold detection time, use its data volume of independently using multicast program 110 of receiving in section in detection time of prior art accumulative total by STB 140, and with accumulative total data volume compare with the micro-receive threshold of setting, if the data volume of accumulative total is high relatively, STB 140 determines that self and master are normal with the communications status between the multicast program 110, and this communications status can be supported the STB 140 normal channel content of independently using multicast program 110 that receive; Otherwise STB 140 determines that self and master are fault with the communications status between the multicast program 110, and this communications status can't be supported the STB 140 normal channel content of independently using multicast program 110 that receive.
Particularly, cause STB 140 and main to be with communications status between the multicast program 110 that the reason of fault has multiple, as: main break down, be connected in STB 140 and lead with multicast program 110 break down with the intermediary network device between the multicast program 110 etc.
Can support self normal reception when independently using the channel content of multicast program 110 when STB 140 determines described communications status, the channel content of multicast program 110 is independently used in STB 140 continuation receptions; Otherwise 140 of STB determine and need switch to other certain standby multicast program with multicast program 110 by main, and then are controlled to be the intermediary network device of self serving and switch to this standby multicast program.For convenience of description, below will abbreviate intermediary network device as for the intermediary network device of STB 140 services.
When determining to switch to other certain standby multicast program by the master with multicast program 110, STB 140 is in the described channel identication corresponding relation that is provided with, the pairing channel identication of sign of the main channel with multicast program 110 that reads current reception, and the channel identication that reads is defined as the channel identication of the standby multicast program that will switch to.
When the only corresponding channel identication of main channel identication with multicast program 110, STB 140 can determine the main pairing channel identication of channel identication of using multicast program 110 easily; And when the corresponding a plurality of channel identication of main channel identication with multicast program 110,140 needs of STB are selected one in these a plurality of channel identications, with the channel identication of selection as the pairing channel identication of standby multicast program channel that will switch to.
Concrete channel identication system of selection can have multiple, as: at the channel content of a plurality of channel identications as described in comprising, error rate when STB 140 uses prior art calculating receiving channels content, and select the minimum channel identication that channel content comprised of the error rate, with this channel identication as the pairing channel identication of standby multicast program channel that will switch to; Perhaps, at the channel content that comprises described a plurality of channel identications, packet loss when STB 140 uses prior art calculating receiving channels content, and select the minimum channel identication that channel content comprised of packet loss, with this channel identication as the pairing channel identication of standby multicast program channel that will switch to.
When STB 140 has determined the channel identication of the standby multicast program that will switch to, just can switch to standby multicast program according to this channel identication.
Show as the situation of bearing identification at channel identication, STB 140 by the master with the concrete grammar that multicast program 110 switches to standby multicast program is: STB 140 sends to described intermediary network device and leaves (Leave) message, at least comprise the channel identication that channel content comprised of independently using multicast program 110 that STB 140 can't normally receive in this message, and this channel identication shows as bearing identification; Intermediary network device reads the bearing identification that comprises in the Leave message from STB 140, determines that the channel content of no longer the pairing transmission bearer of this bearing identification being sent sends to STB140.
When sending described Leave message or afterwards, STB 140 also sends report (Report) message to intermediary network device, this message comprises the pairing channel identication of standby multicast program channel that STB 140 will switch at least, and this channel identication shows as bearing identification; Intermediary network device reads the bearing identification that comprises in the Report message from STB 140, determines that the pairing carrying of the bearing identification that reads is the carrying that STB 140 will add, and will send to STB140 from the channel content of this carrying.
The situation that comprises bearing identification and multicast program sign at channel identication, STB 140 by the master with the concrete grammar that multicast program 110 switches to standby multicast program is: STB 140 sends the Report message to described intermediary network device, at least comprise the channel identication that channel content comprised of independently using multicast program 110 (can abbreviate as main) that STB 140 can't normally receive in this message with multicast program 110 channel identications, also comprise the pairing channel identication of standby multicast program channel (can abbreviate the switching channels sign as) that STB 140 will switch to, and described channel identication all comprises bearing identification and multicast program sign.
Intermediary network device reads from main bearing identification and the multicast program sign that is comprised with multicast program 110 channel identications in the Report message of STB 140, definitely no longer will identify pairing multicast program and the channel content sent by the pairing transmission bearer of this bearing identification sends to STB 140 from this multicast program; And, intermediary network device also reads bearing identification and the multicast program sign that the switching channels sign in the described Report message is comprised, determine to identify pairing multicast program and the channel content sent by the pairing transmission bearer of this bearing identification is the channel content that STB 140 will receive, and this channel content is sent to STB 140 from this multicast program.
Generally speaking, intermediary network device only when receiving the channel content that will send to STB 140, could send to this channel content STB 140.Might not send the channel content that STB 140 will receive but in actual applications, standby multicast program is current to intermediary network device; In this case, intermediary network device need be obtained this channel content from other communication equipment.
Concrete acquisition methods is generally: during channel identication that described intermediary network device comprises in reading described Report message, use the routing iinformation that prior art is preserved according to self, send the channel content that comprises the channel identication that reads to the communication equipment that can receive described standby multicast program channel content and transmit request; Communication equipment reads from the channel content of intermediary network device and transmits the channel identication that comprises in the request, judge self current channel content that comprises this channel identication that whether just receiving, if the channel content that comprises this channel identication that communication equipment then will be received is transmitted to intermediary network device; Otherwise communication equipment returns retransmission failure message to intermediary network device.
Certainly, if there are a plurality of communication equipments all to transmit channel content to intermediary network device, an intermediary network device then channel content that one of them communication equipment of selective reception is sent gets final product.Concrete system of selection can have multiple, as: at channel content from a plurality of communication equipments, error rate when intermediary network device is used prior art calculating receiving channels content, and select the minimum channel content of the error rate from certain communication equipment, as the channel content that will send to STB 140; Perhaps, at channel content from a plurality of communication equipments, packet loss when intermediary network device is used prior art calculating receiving channels content, and select the minimum channel content of packet loss from certain communication equipment, as the channel content that will send to STB 140.
When the channel content received from intermediary network device, STB 140 use prior aries to the channel content of receiving decode, data processing such as adaptive, and the channel content that will finish data processing sends to TV 150, shows the channel content of receiving by TV 150.
During concrete the application, STB can use UE replacements such as computer (PC) main frame, and TV then can replace with display devices such as computer displays.
Based on above description, UE can be carried out the principle of multicast program switching and represent that with flow process shown in Figure 2 this flow process may further comprise the steps:
Step 200: have the main of same channel content for UE is provided with in advance, and between the main pairing channel identication of channel that the same channel content is provided in multicast program and standby multicast program, to set up corresponding relation with multicast program and standby multicast program.Described channel identication corresponding relation is generally held in UE or the communication entities such as intermediary network device for the UE service.
Step 210 is to step 220: when UE receives when independently using the channel content of multicast program, UE determines that self and master use the communications status between the multicast program, and judge whether this communications status can support the normal channel content of independently using multicast program that receives of UE, if, enter step 230, and process ends; Otherwise, enter step 240.
Step 230:UE continues to receive the channel content of independently using multicast program.
The intermediary network device that step 240:UE is controlled to be its service switches to standby multicast program from main with multicast program, with receive from standby multicast program and with switch the identical channel content of channel content of coming independently to use multicast program.
In step 230 and step 240, when UE receives channel content from multicast program, use prior art to the channel content of receiving decode, data processing such as adaptive, and the channel content that will finish data processing sends to display device, shown the channel content of receiving by display device.
By the above as seen, whether carrying out the multicast program switching is determined by UE.Obviously, no longer need monitoring system be set at multicast program, also not need to develop the interface between monitoring system and the multicast program, this has obviously reduced the enforcement difficulty of operation cost and multicast program switching.
Have again, because UE is knowing that communications status between self and the multicast program just carries out multicast program in the time of can't supporting self normal channel content that receives from multicast program and switches; So multicast program itself no matter occurring breaks down, the situation such as break down of communicating to connect between multicast program and the UE still appears, UE can switch to the normally multicast program of receiving channels content smoothly, in time, can't normally not receive channel content from multicast program, also will wait for that the group broadcasting program source carries out the situation that multicast program switches and UE can not occur.As seen, the real-time that UE carries out the multicast program switching is improved significantly, and this makes that also user satisfaction is improved significantly.
Also have, multicast program switches and can only carry out at the UE that can't normally receive the channel content of independently using multicast program, other UE that can normally receive the channel content of independently using multicast program need not carry out multicast program and switch, and these UE that need not carry out the multicast program switching are still accepting main service with multicast program.Obviously, main is not all will all switch to standby multicast program when any fault occurring with multicast program, so the utilance of multicast program is significantly improved, and this helps operator and saves operation cost.And in fact multicast program has the branch that has not had unified active-standby, can only say at certain UE, and current is being the main multicast program of using of this UE for this UE provides the multicast program of channel content just; And current be not the standby multicast program of this UE not for this UE provides the multicast program of channel content.
In order to guarantee that above-mentioned group broadcasting program source switch method can carry out smoothly, need in UE, carry out setting as shown in Figure 3.Among Fig. 3, multicasting program source switching administration unit 320 links to each other with channel information record unit 310, channel content processing unit 330 respectively, and channel information record unit 310, multicasting program source switching administration unit 320, channel content processing unit 330 also link to each other with intermediary network device 340 respectively; Intermediary network device 340 also links to each other with multicast program, and channel content processing unit 330 also links to each other with display device.
Wherein, preserve described channel identication corresponding relation in the channel information record unit 310 at least.Channel content processing unit 330 is used for by the channel content of intermediary network device 340 receptions from multicast program, and the channel content of receiving is carried out aforesaid data processing, and the channel content that will finish data processing again sends to display device; The channel content that also is used for finishing data processing sends to multicasting program source switching administration unit 320.Channel information record unit 310 can be separately set in the physical entity, also can be arranged at jointly in the same physical entity with multicasting program source switching administration unit 320 or channel content processing unit 330 etc.No matter how channel information record unit 310 is provided with, as long as there is communication entity can obtain smoothly from channel information record unit 310 when the described channel identication corresponding relation of needs.
The correlation method that multicasting program source switching administration unit 320 is used for application of aforementioned is determined communications status between the current and multicast program of UE according to the channel content of receiving, and when determining that this communications status can't be supported the normal channel content that receives from multicast program of UE, according to the channel identication corresponding relation of preserving in the channel information record unit 310, the modes such as Leave message, Report message that comprise channel identication with aforesaid transmission are controlled intermediary network device 340 and are switched to standby multicast program from main with multicast program; Intermediary network device 340 is used for the control according to multicasting program source switching administration unit 320, and the corresponding multicast program source switch method of application of aforementioned switches to standby multicast program from main with multicast program.
As seen, the UE that comprises device shown in Fig. 3, can determine that self and master use the communications status between the multicast program, and determine whether to carry out the multicast program switching, and when determining that will carry out multicast program switches, carry out corresponding multicast program handover operation according to this communications status.Obviously, no longer need monitoring system be set at multicast program, also not need to develop the interface between monitoring system and the multicast program, this has obviously reduced the enforcement difficulty of operation cost and multicast program switching.And the real-time that UE carries out the multicast program switching is improved significantly, and this makes that also user satisfaction is improved significantly.Have, owing to be not all will switch to other multicast program when any fault appears in multicast program, make the utilance of multicast program be significantly improved, this helps operator and saves operation cost.
Described multicast multicast program can be the head end in internet protocol TV (IPTV) system etc.
As seen from the above description, described channel identication corresponding relation be based upon main with between the pairing channel identication of channel that the same channel content is provided in multicast program and the standby multicast program; This is independently to use the channel of multicast program identical in order to receive before guaranteeing channel that UE received and switch after switching.
In actual applications, described channel identication corresponding relation also can be based upon main with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program; Although it is so one, UE after switching according to the channel identication corresponding relation received channel with switch before to receive autonomous channel with multicast program different, but such switching has high real-time equally, thereby also can obviously improve user satisfaction.
Have again, if main have identical channel content with multicast program with standby multicast program, described channel identication corresponding relation can be to be based upon the master with between the pairing channel identication of channel that the same channel content is provided in multicast program and the standby multicast program; Also can be to be based upon the master with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program.
Also have, if main have all different channel content with multicast program and standby multicast program, described channel identication corresponding relation then is to be based upon to lead with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program.
By the above as can be seen, the mthods, systems and devices that realization multicast program provided by the present invention switches all can obviously improve the real-time that multicast program switches, and improve user satisfaction.
Claims (18)
1, a kind of method that realizes that multicast program switches, it is characterized in that, be provided with main for user equipment (UE) in advance with multicast program and standby multicast program, and set up the channel identication corresponding relation between the pairing channel identication of channel that in leading, provides with multicast program and standby multicast program, this method is further comprising the steps of:
A. receive the UE that independently uses the multicast program channel content, determine that self and master use the communications status between the multicast program, and judge whether this communications status can support the normal channel content of independently using multicast program that receives of UE;
B. when definite UE can't normally receive the channel content of independently using multicast program, UE determines the standby multicast program that should switch to according to the channel identication corresponding relation of setting up, and the intermediary network device that is controlled to be the UE service switches to standby multicast program.
2, the method for claim 1 is characterized in that, among the step a,
Described UE determines that self and the method for leading with the communications status between the multicast program comprise:
The error rate/packet loss when UE calculating self reception is led with the channel content of multicast program, and the error rate/packet loss that obtains compared with the error rate that sets in advance/packet loss threshold value, if the error rate/packet loss threshold value is high relatively, UE determines that self and master are normal with the communications status between the multicast program; Otherwise UE determines that self and master are fault with the communications status between the multicast program;
Described determination methods comprises:
If UE and main be normal with the communications status between the multicast program, UE determines that this communications status can support self normal reception independently to use the channel content of multicast program; Otherwise UE determines that this communications status can't support self normal channel content of independently using multicast program that receives.
3, the method for claim 1 is characterized in that, among the step a, described UE determines that self and the method for leading with the communications status between the multicast program comprise:
Set in advance section and micro-receive threshold detection time, by its data volume of independently using multicast program of receiving in section in detection time of UE accumulative total, and with accumulative total data volume compare with the micro-receive threshold of setting, if the data volume of accumulative total is high relatively, UE determines that self and master are normal with the communications status between the multicast program; Otherwise UE determines that self and master are fault with the communications status between the multicast program;
Described determination methods comprises:
If UE and main be normal with the communications status between the multicast program, UE determines that this communications status can support self normal reception independently to use the channel content of multicast program; Otherwise UE determines that this communications status can't support self normal channel content of independently using multicast program that receives.
4, the method for claim 1 is characterized in that, among the step b, the method for described definite standby multicast program comprises:
UE in the described channel identication corresponding relation that is provided with, the pairing channel identication of sign of the main channel with multicast program that reads current reception, and the channel identication that reads is defined as the channel identication of the standby multicast program that will switch to.
5, as each described method of claim 1 to 4, it is characterized in that described channel identication shows as bearing identification, then among the step b, the process that UE control intermediary network device is carried out described switching comprises:
UE sends report Report message to intermediary network device, and this message comprises the pairing bearing identification of standby multicast program channel that UE will switch at least; Intermediary network device reads the bearing identification that comprises in the Report message from UE, will send to UE from the channel content of the pairing carrying of this bearing identification.
6, method as claimed in claim 5 is characterized in that, step b further comprises:
UE sends to described intermediary network device and leaves the Leave message, comprises the bearing identification that channel content comprised of independently using multicast program that UE can't normally receive in this message at least; Intermediary network device reads the bearing identification that comprises in the Leave message from UE, determines that the channel content of no longer the pairing transmission bearer of this bearing identification being sent sends to UE.
As each described method of claim 1 to 4, it is characterized in that 7, described channel identication comprises bearing identification and multicast program sign, then among the step b, the process that UE control intermediary network device is carried out described switching comprises:
UE sends the Report message to intermediary network device, comprises pairing bearing identification of standby multicast program channel and multicast program sign that UE will switch in this message at least; Intermediary network device reads from the bearing identification in the Report message of UE and multicast program sign, will identify pairing multicast program and the channel content sent by the pairing transmission bearer of this bearing identification sends to UE from this multicast program.
8, method as claimed in claim 7 is characterized in that, further comprises in the described Report message: the bearing identification that channel content comprised of independently using multicast program that UE can't normally receive and multicast program sign;
Intermediary network device further reads described main bearing identification and the multicast program sign that is comprised with the multicast program channel content in this Report message, and definitely no longer will identify pairing multicast program and the channel content sent by the pairing transmission bearer of this bearing identification sends to UE from this multicast program.
9, the method for claim 1 is characterized in that, described master has identical channel content with multicast program with standby multicast program; Or have all different channel content.
10, method as claimed in claim 9, it is characterized in that, described main have identical channel content with multicast program with standby multicast program, and then described channel identication corresponding relation is to be based upon to lead with between the pairing channel identication of channel that the same channel content is provided in multicast program and the standby multicast program; Or be based upon main with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program;
Perhaps, described main have all different channel content with multicast program and standby multicast program, and then described channel identication corresponding relation is to be based upon to lead with between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program.
11, the method for claim 1 is characterized in that, described UE is set-top box STB or main frame.
12, a kind of realization multicasting program source switching system, can receive main channel content with multicast program and standby multicast program, it is characterized in that, this system comprises intermediary network device, and the channel information record unit, multicasting program source switching administration unit, the channel content processing unit that link to each other and all link to each other with intermediary network device successively;
Wherein, channel information record unit is used for preserving the channel identication corresponding relation of leading between the pairing channel identication of channel that provides with multicast program and standby multicast program;
The channel content processing unit is used for receiving from the channel content of the multicast program line data of going forward side by side by intermediary network device and handles, and the channel content that will finish data processing sends to the multicasting program source switching administration unit;
The multicasting program source switching administration unit is used for determining according to the channel content of receiving current and main with the communications status between the multicast program; And when determining normally to receive the channel content of independently using multicast program according to communications status, according to the definite standby multicast program that should switch to of the channel identication corresponding relation of preserving in the channel information record unit, and the control intermediary network device switches to standby multicast program from main with multicast program;
Intermediary network device is used for switching to standby multicast program from main with multicast program according to the control of multicasting program source switching administration unit, receives the channel content from standby multicast program.
13, system as claimed in claim 12, it is characterized in that the described corresponding relation that channel information record unit is preserved is to be based upon to lead with the channel identication corresponding relation between the pairing channel identication of channel that the same channel content is provided in multicast program and the standby multicast program; Or be based upon main with the channel identication corresponding relation between the pairing channel identication of channel that the different channel content is provided in multicast program and the standby multicast program.
14, system as claimed in claim 12 is characterized in that, the channel content processing unit links to each other with display device, and the channel content that is further used for finishing data processing sends to display device.
15, system as claimed in claim 14 is characterized in that, described display device is TV or computer display, is used to show the channel content of receiving.
As each described system of claim 12 to 15, it is characterized in that 16, described channel information record unit, channel content processing unit and multicasting program source switching administration unit are arranged among the STB or in the main frame.
17, a kind of realization multicast program device for switching, can receive main channel content with multicast program and standby multicast program, it is characterized in that this device comprises channel information record unit, multicasting program source switching administration unit, the channel content processing unit that links to each other successively;
Wherein, channel information record unit is used for preserving the channel identication corresponding relation of leading between the pairing channel identication of channel that provides with multicast program and standby multicast program;
The channel content processing unit is used to receive from the channel content of the multicast program line data of going forward side by side and handles, and the channel content that will finish data processing sends to the multicasting program source switching administration unit;
The multicasting program source switching administration unit is used for determining according to the channel content of receiving current and main with the communications status between the multicast program; And when determining normally to receive the channel content of independently using multicast program according to communications status, according to the definite standby multicast program that should switch to of the channel identication corresponding relation of preserving in the channel information record unit, and the intermediary network device that control is connected switches to standby multicast program from main with multicast program.
18, device as claimed in claim 17 is characterized in that, this device is arranged in the set-top box.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101902403A (en) * | 2010-07-30 | 2010-12-01 | 中国联合网络通信集团有限公司 | Method and device for enhancing reliability of multicast source |
| CN101568022B (en) * | 2008-09-19 | 2011-02-16 | 北京东方英龙科技发展有限公司 | Program-playing method and media player |
| CN101567828B (en) * | 2008-09-19 | 2011-04-27 | 北京东方英龙科技发展有限公司 | Passenger information service system and realization method thereof |
| CN101237393B (en) * | 2007-01-30 | 2012-08-22 | 华为技术有限公司 | A method and device and system for realizing quick multicast service switch |
| CN101909194B (en) * | 2009-06-08 | 2013-01-23 | 华为技术有限公司 | Method and system for providing channel switching service and channel switching server |
| CN103095480A (en) * | 2011-11-04 | 2013-05-08 | 华为软件技术有限公司 | Method of head end system switch between master and slave and network management equipment and head end system |
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| US6839865B2 (en) * | 2000-12-29 | 2005-01-04 | Road Runner | System and method for multicast stream failover |
| WO2004017559A1 (en) * | 2002-08-16 | 2004-02-26 | Thomson Licensing S.A. | Download optimization in the presence of multicast data |
| CN100407619C (en) * | 2003-11-18 | 2008-07-30 | 中兴通讯股份有限公司 | Method for implementing switching between main and standby port by network processor |
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| CN101237393B (en) * | 2007-01-30 | 2012-08-22 | 华为技术有限公司 | A method and device and system for realizing quick multicast service switch |
| CN101568022B (en) * | 2008-09-19 | 2011-02-16 | 北京东方英龙科技发展有限公司 | Program-playing method and media player |
| CN101567828B (en) * | 2008-09-19 | 2011-04-27 | 北京东方英龙科技发展有限公司 | Passenger information service system and realization method thereof |
| CN101909194B (en) * | 2009-06-08 | 2013-01-23 | 华为技术有限公司 | Method and system for providing channel switching service and channel switching server |
| CN101902403A (en) * | 2010-07-30 | 2010-12-01 | 中国联合网络通信集团有限公司 | Method and device for enhancing reliability of multicast source |
| CN103095480A (en) * | 2011-11-04 | 2013-05-08 | 华为软件技术有限公司 | Method of head end system switch between master and slave and network management equipment and head end system |
| CN103095480B (en) * | 2011-11-04 | 2017-09-19 | 华为软件技术有限公司 | Method, Network Management Equipment and the head-end system of head-end system active-standby switch |
| CN103873893A (en) * | 2014-03-14 | 2014-06-18 | 中央电视台 | Broadcast control method and system |
| CN104301775A (en) * | 2014-09-28 | 2015-01-21 | 四川长虹电器股份有限公司 | Method for determining time migration between different program sources |
| CN104301775B (en) * | 2014-09-28 | 2017-12-15 | 四川长虹电器股份有限公司 | Confirm the method for time migration between different program sources |
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