WO2012055227A1 - Procédé et dispositif de multiplexage pour la norme cmmb (china mobile multimedia broadcast) - Google Patents

Procédé et dispositif de multiplexage pour la norme cmmb (china mobile multimedia broadcast) Download PDF

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Publication number
WO2012055227A1
WO2012055227A1 PCT/CN2011/073767 CN2011073767W WO2012055227A1 WO 2012055227 A1 WO2012055227 A1 WO 2012055227A1 CN 2011073767 W CN2011073767 W CN 2011073767W WO 2012055227 A1 WO2012055227 A1 WO 2012055227A1
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WO
WIPO (PCT)
Prior art keywords
multiplexing
policy
module
cmmb
trigger
Prior art date
Application number
PCT/CN2011/073767
Other languages
English (en)
Chinese (zh)
Inventor
夏智海
陈志兵
谢立强
林彬
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of WO2012055227A1 publication Critical patent/WO2012055227A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13248—Multimedia
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13292—Time division multiplexing, TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13332—Broadband, CATV, dynamic bandwidth allocation

Definitions

  • CMMB China Mobile Multimedia Broadcast
  • CMMB China Mobile Multimedia Broadcast
  • a main object of the present invention is to provide a CMMB multiplexing scheme to solve at least the problem that the above-mentioned related technologies in the related art that are easy to be multiplexed in the multiplexing process cannot meet actual needs.
  • a CMMB multiplexing method comprising: determining, in a CMMB data transmission process, that environment data or local control information meets a predetermined trigger condition; The condition generates a dynamic multiplexing trigger message; the dynamic multiplexing trigger message is used to match the reuse strategy corresponding to the trigger condition in the stored multiplexing policy; and the data is multiplexed by using the corresponding multiplexing policy and the CMMB protocol.
  • the method further includes: notifying the front-end device to synchronize the front-end device according to the multiplexing policy.
  • the front-end device is notified to multiplex the policy synchronization front-end device to include at least one of: notifying the modulator to reset or update the multi-frame 0; starting or stopping the encoder to send data; turning on or off the designated data broadcast service; notifying the electronic service guide
  • the ESG server updates the data.
  • the multiplexing policy under different trigger conditions is stored.
  • determining that the environmental data or the local control information meets the predetermined trigger condition comprises at least one of: determining a local timer timeout; determining that the local counter count meets the predetermined number of times; determining that the number of users of one program is lower than the first predetermined threshold ; determining that the number of votes for a user who is expected to play a program is higher or lower than a second predetermined threshold.
  • the dynamic multiplexing trigger message includes at least one of the following: a type of a trigger condition, a number of elements of each type that satisfy the trigger condition, and a priority of the type.
  • a CMMB multiplexing apparatus comprising: a determining module configured to determine environmental data or local control information to satisfy a predetermined schedule during CMMB data transmission a triggering condition; a generating module, configured to generate a dynamic multiplexing trigger message according to the triggering condition; and a matching module configured to match the reused policy corresponding to the triggering condition in the stored multiplexing policy by using the dynamic multiplexing trigger message; , set to reuse data using the corresponding multiplexing policy and CMMB protocol.
  • the foregoing apparatus further includes: a notification module, configured to notify the front end device to synchronize the front end device according to the multiplexing policy.
  • the foregoing apparatus further includes: a storage module, configured to store a multiplexing policy under different trigger conditions.
  • the determining module is configured to determine that the local timer expires, the local counter count satisfies the predetermined number of times, the number of users of one program is lower than the first predetermined threshold, or the number of users voting for an intended program is higher or lower than the second predetermined Threshold.
  • FIG. 1 is a flow chart of a CMMB multiplexing method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a multiplexing device according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of applying different multiplexing policies in different triggering conditions according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a time slot structure of a multiplexing policy 1 according to an embodiment of the present invention
  • 6 is a schematic diagram of a time slot structure of the multiplexing policy 2 in the embodiment of the present invention
  • FIG. 7 is a schematic diagram of a time slot structure of the multiplexing policy 3 in the embodiment of the present invention
  • FIG. 8 is a CMMB multiplexing device according to an embodiment of the present invention; Block diagram of the structure.
  • FIG. 1 is a flowchart of a CMMB multiplexing method according to an embodiment of the present invention. As shown in FIG. 1, the method includes: Step S102, CMMB data transmission In the process, the environment data or the local control information is determined to meet the predetermined trigger condition. Step S104: The dynamic multiplexing trigger message is generated according to the trigger condition.
  • the dynamic multiplexing trigger message includes at least one of the following information: The type, the number of elements in each type that satisfy the trigger condition, and the priority of the type.
  • the multiplexing policy corresponding to the triggering condition is matched in the stored multiplexing policy by using the dynamic multiplexing trigger message.
  • Step S108 The data is multiplexed by using the corresponding multiplexing policy and the CMMB protocol. In this embodiment, in the CMMB data transmission process, the multiplexing policy is adjusted according to the actual situation, thereby achieving the effect of meeting different service rates in different situations.
  • the front-end device is notified to synchronize the front-end device according to the multiplexing policy.
  • the front-end device here refers to all devices of the transmitting station, such as modulators, encoders, data broadcasting services, and ESG servers. In actual operation, the front-end device is notified to synchronize the front-end device according to the multiplexing policy, and may include at least one of: notifying the modulator to reset or update the multi-frame 0; starting or stopping the encoder to send data; turning on or off the designated data broadcast service; Notify the Electronic Business Guide ESG server to update data.
  • the multiplexing policy under different trigger conditions is stored first, and then the multiplexing policy corresponding to the triggering condition is matched in the stored multiplexing policy by using the dynamic multiplexing trigger message.
  • determining that the environmental data or the local control information meets the predetermined trigger condition comprises at least one of: determining a local timer timeout; determining that the local counter count meets the predetermined number of times; determining that the number of users of one program is lower than the first predetermined threshold ; determining that the number of votes for a user who is expected to play a program is higher or lower than a second predetermined threshold.
  • the environmental data may be, but is not limited to, the number of users of one program.
  • FIG. 2 is a schematic structural diagram of a multiplexing device according to an embodiment of the present invention.
  • the device includes: a console module, a dynamic multiplexing trigger condition processing module, a dynamic multiplexing policy library, and dynamic multiplexing. Policy decision module, multiplexing module, device synchronization module and output module. The function of each module is described in detail below.
  • the console module is configured to configure a dynamic multiplexing trigger condition control module, a dynamic multiplexing policy library, and a dynamic multiplexing policy decision module.
  • the dynamic multiplexing trigger condition control module is configured to utilize input environmental data (eg, number of users per program, distribution of programs viewed by the user) or local (ie, system itself) control information (eg, timers, counters, etc.) It is automatically determined whether the trigger condition of the dynamic multiplexing policy is formed, wherein the number of users per program and the distribution of programs viewed by the user refer to the user distribution of the program, which may be taken during use.
  • the environment trigger condition may also be feedback feedback information of the user on an intended broadcast program. If a trigger condition of the dynamic multiplexing policy is formed, a dynamic multiplexing trigger message is generated.
  • the dynamic multiplexing trigger message contains information such as the type of trigger condition, the number of conditions of a certain type, and the priority of each type.
  • the dynamic reuse policy library is set to store reuse strategies under different trigger conditions.
  • the dynamic multiplexing policy decision module is configured to receive the dynamic multiplexing trigger message, and match the dynamic multiplexing policy from the dynamic multiplexing policy library according to information such as the type, quantity, and priority of the trigger message, and then apply the successfully matched dynamic multiplexing policy.
  • the multiplexing module is configured to receive data from a data source that needs to be multiplexed, such as an audio and video encoder, a data broadcast server, an Electronic Service Guide (ESG) server, and the like.
  • ESG Electronic Service Guide
  • the output module is configured to package the multiplexed frame into a Packaged Multiplexing Stream (PMS) according to the CMMB protocol and output it to the next device.
  • the front-end device synchronization module is configured to notify the relevant front-end device to synchronize according to the multiplexing policy. For example, reset the modulator, control the code rate of the encoder, turn on the specified data broadcast service, notify the ESG server to update the data, and so on.
  • the above device may be a multiplexer.
  • the method of dynamically multiplexing using the above apparatus includes the following steps A to
  • Step A Multiplexing module
  • the multiplexing strategy and the CMMB protocol package the input data into multiplexing.
  • Step B The output module packs the multiplexed frame into a PMS stream and outputs it to the next device according to the CMMB protocol.
  • Step c If the dynamic multiplexing trigger condition control module determines that one or more trigger conditions are met, a trigger message is sent to the dynamic multiplexing policy generation module.
  • the dynamic multiplexing trigger condition control module first dynamically changes the environment data (network state feedback information, user quantity feedback information, channel utilization feedback information, etc.) or its own control information (such as timers, counters, etc.). Determine whether the trigger condition of the dynamic multiplexing policy is met.
  • Step D After receiving the dynamic multiplexing trigger message, the dynamic multiplexing policy decision module matches the dynamic multiplexing policy according to the type, quantity, and priority of the trigger condition carried in the trigger message, and successfully matches the matching. The policy applies to the multiplexing module and the front-end device synchronization module.
  • Step E The multiplexing module applies a new multiplexing strategy to multiplex the input data, and the front-end device synchronizes the front-end device according to the multiplexing policy.
  • this embodiment introduces a dynamic multiplexing trigger condition processing module, a dynamic multiplexing strategy library, and a dynamic multiplexing policy decision mechanism, so as to apply different multiplexing strategies under different conditions.
  • the utilization of the bandwidth is improved, and on the other hand, the need to meet different service rates in different situations is ensured.
  • the device synchronization control module while introducing the device synchronization control module and applying the new multiplexing strategy, the device synchronization control module adjusts the operating parameters of the related device, thereby achieving the purpose that the entire front-end system is in an optimal running state, and the CMMB is improved. The stability of the front-end system operation.
  • the trigger condition is a timer message
  • the object of the dynamic multiplexing policy adjustment is the time slot j, j+1, j+2, j+3 as an example (note that the trigger condition is not limited to The timer message, the adjustment object is not limited to the time slots j, j+1, j+2, j+3).
  • the dynamic multiplexing method of the present invention will be described. This embodiment still uses the multiplexing device in the second embodiment.
  • FIG. 3 is a schematic diagram of an update process of a dynamic multiplexing policy according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps: Step 1: The dynamic multiplexing trigger condition processing module tracks a trigger condition.
  • Step 2 Determine whether the dynamic multiplexing trigger condition processing module tracks whether the trigger condition is formed (in this example, the trigger condition is a timer timeout).
  • Step 3 When the timer expires to form a trigger condition, the dynamic multiplexing trigger condition processing module issues a trigger message of the timer timeout to the dynamic multiplexing policy decision module.
  • Step 4 After receiving the trigger message, the dynamic multiplexing policy decision module determines the type, quantity, and priority of the trigger message, where the type is a trigger condition type, such as a timer, a counter, etc., and the quantity is in a certain type. The number of the elements of the element that meets the trigger condition.
  • the number of trigger types of the timer is 2, and the priority is the priority of each trigger type.
  • the timer type can be set. The priority is higher than the priority of the counter.
  • a new multiplexing policy can be selected according to the type of the timer.
  • the dynamic multiplexing policy library is queried to find a multiplexing policy that matches the trigger message.
  • the dynamic multiplexing policy decision module notifies the multiplexing module to apply the policy to multiplex input data such as audio and video data, data broadcast data, and ESG data.
  • Step 6 At the same time as step 5, the front-end device synchronization control module is notified to send a corresponding synchronization instruction to the relevant front-end device according to the multiplexing policy.
  • Step 4 is 7 and repeating step 4 is 1-6.
  • FIG. 4 is a schematic diagram of applying different multiplexing strategies under different trigger conditions according to an embodiment of the present invention. As shown in FIG. 4, in time period 1, the multiplexing module is applied. The multiplexing strategy 1 multiplexes the data to output a multiplexed frame of the slot structure as shown in Figure 5.
  • a timer may be defined to specify a certain timer. The multiplexing policy corresponding to the timeout takes effect or fails.
  • the correspondence between the timer and the policy can be set according to the actual situation. For example, if the finite time of a certain multiplexing policy is specified as t, then the multiplexing policy can be effective. A timer is started, and its timing is t. When the timer expires, the multiplexing policy is invalid. When the trigger condition 1 (that is, the timer 1 times out) is formed, the multiplexing policy update process is performed, and the multiplexing module is applied.
  • the multiplexing strategy 2 outputs a multiplexing frame of the slot structure as shown in Fig. 6.
  • the multiplexing module applies the multiplexing strategy 3, and outputs As shown in Figure 7 The multiplexing frame of the slot structure. In this way, different multiplexing strategies are applied for different time periods.
  • a combination of network state feedback information, user quantity feedback information, channel utilization feedback information, timers and counters are triggered ( When not limited to the combination of the above information, the dynamic multiplexing policy decision module determines which multiplexing strategy to match according to the type, quantity, and priority of the triggering condition.
  • the embodiment of the present invention further provides a CMMB multiplexing device, which is used to implement the foregoing solution, and the multiplexing device may be a multiplexer.
  • the apparatus includes: a determining module 82 configured to determine that environmental data or local control information meets a predetermined schedule during CMMB data transmission.
  • the apparatus further comprises: a notification module, configured to notify the front end device to synchronize the front end device according to the multiplexing policy.
  • the apparatus further comprises: a storage module configured to store a multiplexing policy under different trigger conditions.
  • the determining module 82 is configured to determine that the local timer expires, the local counter count satisfies the predetermined number of times, the number of users of one program is lower than the first predetermined threshold, or the number of users voting for an intended program is higher or lower than the second. Schedule a threshold.
  • the apparatus shown in this embodiment has a corresponding relationship with the apparatus shown in FIG. 2, wherein the determining module 82 and the generating module 84 correspond to a trigger condition processing module, and the matching module 86 corresponds to a dynamic multiplexing policy decision.
  • the module, the multiplexing module 88 corresponds to the multiplexing module in FIG. 2, and the notification module in this embodiment corresponds to the device synchronization control module in FIG. 2, and the storage module in this embodiment corresponds to the dynamic in FIG. Reuse the policy library.
  • the present invention achieves the effect of meeting different service rate requirements and improving bandwidth utilization under different conditions.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de multiplexage pour la norme CMMB (China Mobile Multimedia Broadcast), le procédé comprenant les étapes consistant à : établir si des données environnementales ou des informations de commande locales remplissent une condition de déclenchement préétablie lors de la transmission de données de type CMMB (S102); générer, suite à la condition de déclenchement, un message de déclenchement de multiplexage dynamique (S104); comparer le message de déclenchement de multiplexage dynamique avec des modes de multiplexage mémorisés pour obtenir le mode de multiplexage correspondant à la condition de déclenchement (S106); et multiplexer les données en fonction du mode de multiplexage correspondant et du protocole CMMB (S108). L'invention permet la prise en charge de plusieurs débits de services différents sous plusieurs conditions différentes.
PCT/CN2011/073767 2010-10-26 2011-05-06 Procédé et dispositif de multiplexage pour la norme cmmb (china mobile multimedia broadcast) WO2012055227A1 (fr)

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CN2010105199511A CN101980532A (zh) 2010-10-26 2010-10-26 Cmmb复用方法及装置
CN201010519951.1 2010-10-26

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CN101980532A (zh) * 2010-10-26 2011-02-23 中兴通讯股份有限公司 Cmmb复用方法及装置

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EP2141839A1 (fr) * 2008-06-30 2010-01-06 Thomson Licensing, Inc. Procédé et dispositif pour emprunter des intervalles de temps
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CN101562751B (zh) * 2008-12-31 2012-05-23 北京创毅视讯科技有限公司 一种移动多媒体广播系统中的多业务复用方法和装置

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CN1085916C (zh) * 1994-12-19 2002-05-29 摩托罗拉公司 采用动态分组分段的多媒体多路复用装置
EP2141839A1 (fr) * 2008-06-30 2010-01-06 Thomson Licensing, Inc. Procédé et dispositif pour emprunter des intervalles de temps
CN101478360A (zh) * 2008-12-12 2009-07-08 北京创毅视讯科技有限公司 一种移动多媒体广播系统中的多业务复用方法和装置
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CN101980532A (zh) * 2010-10-26 2011-02-23 中兴通讯股份有限公司 Cmmb复用方法及装置

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