WO2008028417A1 - Procédé et système destinés à l'envoi d'un service de diffusion/multidiffusion multimédia et dispositif de sélection - Google Patents

Procédé et système destinés à l'envoi d'un service de diffusion/multidiffusion multimédia et dispositif de sélection Download PDF

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Publication number
WO2008028417A1
WO2008028417A1 PCT/CN2007/070385 CN2007070385W WO2008028417A1 WO 2008028417 A1 WO2008028417 A1 WO 2008028417A1 CN 2007070385 W CN2007070385 W CN 2007070385W WO 2008028417 A1 WO2008028417 A1 WO 2008028417A1
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WIPO (PCT)
Prior art keywords
mbms
carrier frequency
service
mbms service
unit
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Application number
PCT/CN2007/070385
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English (en)
Chinese (zh)
Inventor
Hao Hu
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008028417A1 publication Critical patent/WO2008028417A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to Multimedia Broadcast/Multicast Service (MBMS) technology, and more particularly to a method, system and an option for transmitting a multimedia broadcast/multicast service.
  • MBMS Multimedia Broadcast/Multicast Service
  • Multicast and broadcast are technologies that transfer data from one data source to multiple destinations.
  • a cell multicast service or a cell broadcast service (CBS, Cell Broadcast Service) allows low bit rate data to be transmitted to all users through a cell shared broadcast channel, which is a message type service.
  • CBS Cell Broadcast Service
  • IP Internet Protocol
  • the Third Generation Mobile Communications Global Standards Organization (3GPP) proposes MBMS for mobile communication networks to provide a point-to-multipoint service in which data sources transmit data to multiple users in a mobile communication network. , to achieve network resource sharing, improve the utilization of network resources, especially air interface resources.
  • the MBMS proposed by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia Multicast and broadcast of physical services, which undoubtedly conforms to the trend of future mobile data development.
  • the method for sending an MBMS service is mainly as follows:
  • the access network concentrates a user terminal that receives an MBMS service to a certain frequency, and uses the frequency as a transmission carrier frequency of the MBMS service, and then sends the carrier frequency by using the carrier frequency.
  • MBMS services to each user terminal.
  • the carrier frequency used to transmit the MBMS service is the current WCDMA carrier frequency.
  • the current WCDMA resources are used, that is, the existing transport channel and the physical channel are used.
  • the current WCDMA carrier frequency for transmitting the MBMS service is referred to as a non-MBMS carrier frequency.
  • the current way of transmitting MBMS services using non-MBMS carrier frequencies makes MBMS occupy a large amount of existing radio resources, which greatly affects the transmission of existing non-MBMS services.
  • the embodiment of the invention provides a method for transmitting a multimedia MBMS service, so as to implement the MBMS service without affecting the transmission of the existing non-MBMS service.
  • the embodiment of the invention further provides a system for transmitting a multimedia MBMS service, so as to facilitate the transmission of the MBMS service without affecting the transmission of the existing non-MBMS service.
  • the embodiment of the invention further provides a selection device, so as to achieve the transmission of the MBMS service without affecting the transmission of the existing non-MBMS service.
  • a method for transmitting a MBMS service of a multimedia broadcast/multicast service comprising: additionally allocating a downlink carrier independent of a non-MBMS carrier frequency as a carrier of the MBMS service
  • the MBMS service is selected to be sent on the MBMS carrier frequency or the non-MBMS carrier frequency.
  • a method of transmitting a multimedia MBMS service comprising:
  • non-MBMS carrier frequency choose to send MBMS service on MBMS carrier frequency or non-MBMS carrier frequency.
  • a system for transmitting a multimedia MBMS service comprising: a receiving unit, a selecting unit, and a sending unit;
  • a receiving unit configured to receive the MBMS service that needs to be delivered, and provide the received MBMS service to the selecting unit;
  • a selecting unit configured to receive an MBMS service provided by the receiving unit, and select an additionally allocated MBMS carrier frequency or a non-MBMS carrier frequency independent of a non-MBMS carrier frequency according to an attribute of the MBMS service, and select the MBMS service and The selection result is provided to the sending unit;
  • a sending unit configured to receive the MBMS service and the selection result provided by the selecting unit, and send the MBMS service on the non-MBMS carrier frequency or the additionally allocated MBMS carrier frequency independent of the non-MBMS carrier frequency according to the selection result.
  • a system for transmitting a multimedia MBMS service comprising: a receiving unit, a selecting unit, and a sending unit;
  • a receiving unit configured to receive the MBMS service that needs to be delivered, and provide the received MBMS service to the selecting unit;
  • a selecting unit configured to receive an MBMS service provided by the receiving unit, and select an additionally allocated MBMS carrier frequency or a non-MBMS carrier frequency independent of a non-MBMS carrier frequency according to a current usage status of the non-MBMS carrier frequency, and MBMS business and selection results are provided to Sending unit
  • a sending unit configured to receive the MBMS service and the selection result provided by the selecting unit, and according to the selection result, the MBMS service is in a non-MBMS carrier frequency or an additional allocation independent of the non-MBMS
  • the MBMS carrier frequency is transmitted on the MBMS carrier frequency.
  • the selection device includes: an information acquisition unit and a carrier frequency selection unit; and the information acquisition unit is configured to acquire an attribute of the MBMS service;
  • the carrier frequency selection unit is configured to select, according to an attribute of the MBMS service acquired by the information acquiring unit, a carrier frequency used for sending the MBMS service to be an MBMS carrier frequency or a non-MBMS carrier frequency;
  • the MBMS carrier frequency is an additional downlink carrier that is independent of the non-MBMS carrier frequency for carrying the MBMS service.
  • the selection device includes: an information acquisition unit and a carrier frequency selection unit; the information acquisition unit is configured to acquire a current usage status of the non-MBMS resource; the carrier frequency selection unit is configured to use the current non-MB
  • the MBMS resource is used to transmit the carrier frequency used by the MBMS service to the MBMS carrier frequency or the non-MBMS carrier frequency.
  • the MBMS carrier frequency is a separately allocated downlink carrier for carrying the MBMS service.
  • the method, the system, and the selecting device provided by the embodiments of the present invention additionally allocate a downlink carrier that is independent of the non-MBMS carrier frequency as the MBMS carrier frequency of the MBMS service, and selects the MBMS payload according to the attributes of the MBMS service.
  • the MBMS service is transmitted on a frequency or non-MBMS carrier frequency.
  • the embodiment of the invention further provides a method, a system and a selection device, which additionally allocates a downlink carrier independent of the non-MBMS carrier frequency as the MBMS carrier frequency of the MBMS service, and selects the carrier frequency in the MBMS according to the current usage status of the non-MBMS carrier frequency.
  • the MBMS service is sent on a non-MBMS carrier frequency.
  • the existing non-MBMS service carrier frequency is used. Thereby, the impact of the MBMS service on the current non-MBMS service transmission is reduced, and the occupation of the existing non-MBMS carrier frequency by the MBMS service is reduced.
  • FIG. 1 is a flowchart of a method for transmitting a multimedia MBMS service according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a system for transmitting a multimedia MBMS service according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a selection device according to an embodiment of the present invention. Mode for carrying out the invention
  • the method provided by the embodiment of the present invention may include: additionally allocating a downlink carrier independent of the non-MBMS carrier frequency as the MBMS carrier frequency carrying the MBMS service; and selecting, by the network side, the service attribute of the MBMS service or the current non-MBMS carrier frequency usage status, The MBMS service is transmitted on the MBMS carrier frequency or the non-MBMS carrier frequency.
  • the selection rule of selecting the carrier frequency can be selected according to the preset setting carrier frequency on the MBMS carrier frequency or the non-MBMS carrier frequency.
  • the implementation rule may be a dynamic selection policy, which corresponds to the dynamic mode in the following embodiments.
  • the implementation rule may also be a preset service attribute and a carrier frequency.
  • Correspondence which corresponds to the static mode in the following embodiments.
  • Step 100 Assign a downlink carrier to an MBMS service as an MBMS carrier frequency carrying an MBMS service.
  • a downlink carrier is allocated for the MBMS service, and multiple downlink carriers may be allocated for the MBMS service as the MBMS carrier frequency for carrying the MBMS service.
  • this step allocates a downlink carrier independent of the non-MBMS carrier for the MBMS service as the MBMS carrier frequency for carrying the MBMS service. In this way, the impact of the MBMS service on the current non-MBMS service transmission is minimized, and the occupation of the existing non-MBMS carrier frequency by the MBMS service is reduced.
  • Step 101 The network side selects to send the MBMS service on the MBMS carrier frequency or the non-MBMS carrier frequency according to the service attribute of the MBMS service and/or the current non-MBMS carrier frequency usage status.
  • the service attributes may include one or any combination of the duration of the MBMS service, the amount of data transmitted by the MBMS service, the priority characteristic of the MBMS service, the delay requirement, the service type, and the Qos attribute of the MBMS service.
  • the specific implementation includes dynamic and static modes:
  • the principle of selecting the carrier frequency mode is: The network side selects the carrier frequency in the MBMS according to the service attribute of the MBMS service according to the preset selection policy. If the service attribute of the current MBMS service needs to be transmitted by the MBMS carrier frequency. The MBMS service is sent on; otherwise, the MBMS service is selected to be sent on the non-MBMS carrier frequency. Specifically, the core network selects a carrier frequency for the MBMS service according to a service attribute of the MBMS service according to a preset selection policy, and then sends the selected carrier frequency information to the access network, and the access network selects a carrier frequency. Send the MBMS service;
  • the access network receives the MBMS service start indication from the core network, according to the service attributes of the MBMS service carried in the indication, such as the service type, the amount of data transmitted by the service, the duration of the service, the priority characteristic, and the service Qos attribute, etc., the access network selects a carrier frequency for the MBMS service according to a preset selection policy, and selects a carrier frequency Send the MBMS service.
  • the service attributes of the MBMS service carried in the indication such as the service type, the amount of data transmitted by the service, the duration of the service, the priority characteristic, and the service Qos attribute, etc.
  • the selection strategy is a decision to select the appropriate carrier frequency for the MBMS service after considering the business attributes of the MBMS service. For example, if the duration of the MBMS service is short, the MBMS service can be sent through the non-MBMS carrier frequency; for example, the MBMS service has a longer duration, but the amount of data transmitted by the MBMS service is small, and the The MBMS service is transmitted by the non-MBMS carrier frequency; for example, if the priority characteristic of the MBMS service is high priority, the MBMS service can be transmitted through the MBMS carrier frequency, and the like. It should be noted that the selection strategy can utilize a service attribute of the MBMS service or any combination of all service attributes to select a carrier frequency.
  • the static mode the principle of selecting the carrier frequency mode is:
  • the correspondence between the MBMS service of different service attributes and the transmission carrier frequency information is preset in the network side, and the network side selects the correspondence according to the service attribute of the current MBMS service.
  • the carrier frequency information corresponding to the service attribute of the current MBMS service is selected to be sent on the MBMS carrier frequency if the carrier frequency information is the MBMS carrier frequency; otherwise, the MBMS service is selected to be sent on the non-MBMS carrier frequency.
  • the carrier frequency information corresponding to the service attribute of the current MBMS service is selected to be sent on the MBMS carrier frequency if the carrier frequency information is the MBMS carrier frequency; otherwise, the MBMS service is selected to be sent on the non-MBMS carrier frequency.
  • the core network In the core network, the correspondence between the MBMS service and the transmission carrier information of different service attributes is set in advance.
  • the core network selects carrier frequency information corresponding to the service attribute according to the service attribute of the current MBMS service.
  • the carrier frequency information is carried in the MBMS service start indication and sent to the access network, and the access network sends the MBMS service according to the carrier frequency corresponding to the received carrier frequency information;
  • the correspondence between the MBMS service and the transmission carrier frequency information of different service attributes is preset, and after the access network receives the MBMS service start indication from the core network, the service according to the MBMS service carried in the indication Attribute, selecting carrier frequency information corresponding to the service attribute, and transmitting the MBMS service on the carrier frequency corresponding to the carrier frequency information.
  • the MBMS service of different service attributes and the pair of carrier frequency information are transmitted.
  • a service attribute of the MBMS service or any combination of all service attributes may be utilized to correspond to different carrier frequency information.
  • the access network may further store carrier frequency information currently used corresponding to a certain type of MBMS service, that is, MBMS carrier frequency or non-MBMS.
  • the information of the carrier frequency such that, when the type of the MBMS service needs to be sent next time, before the access network selects to send the carrier frequency, the access network further includes: the access network determines whether it stores the carrier frequency information corresponding to the current MBMS service, if the storage If yes, the stored carrier frequency is used to transmit the MBMS service; otherwise, the process of selecting the carrier frequency is continued.
  • the access network may also select to send the MBMS service on the MBMS carrier frequency or the non-MBMS carrier frequency according to the current non-MBMS frequency resource usage situation. For example, if the current available non-MBMS frequency resource of the access network is rich, The MBMS service can be sent over a non-MBMS carrier frequency.
  • the selection of the carrier frequency according to the service attribute and the selection of the carrier frequency according to the current non-MBMS frequency resource usage may be two independent use modes, or may be a cross-use manner. The following is an example to illustrate the case where the two modes are used interchangeably. For example, the result of selecting the service attribute according to the MBMS service is to use the MBMS carrier frequency to transmit the MBMS service.
  • the access network uses the current non-MBMS frequency resource.
  • the result of the selection is to use the non-MBMS carrier frequency to send the MBMS service.
  • the final selection can be made according to the preset priority. For example, if the current non-MBMS frequency resource usage is selected, the priority is higher.
  • the access network dynamically selects a carrier frequency mode according to the service attribute of the MBMS service.
  • the core network sends an MBMS service start indication to the access network, and the access network according to the indication Carrying the service attribute of the MBMS service, if the duration of the service is short, selecting to send the MBMS service on the current non-MBMS carrier frequency according to a preset selection policy; otherwise, sending the MBMS on the MBMS carrier frequency business.
  • the non-MBMS carrier frequency can be further selected for transmission.
  • the implementation method belongs to the prior art and will not be described in detail herein.
  • the core network dynamically selects a carrier frequency mode according to the service attribute of the MBMS service.
  • the current non-MBMS is selected according to a preset selection policy.
  • the MBMS service is transmitted on the frequency; otherwise, the MBMS service is sent on the MBMS carrier frequency; the carrier network carrying the carrier information of the MBMS service is carried in the MBMS service start indication and sent to the access network, and the access network receives the received
  • the carrier frequency corresponding to the carrier frequency information transmits the current MBMS service.
  • the access network may further select the carrier mode and then send the current MBMS service according to the reselected carrier frequency according to the service attribute of the MBMS service carried in the MBMS service start indication.
  • the access network selects a carrier frequency mode according to its current resource situation.
  • the access network receives the MBMS service start indication sent by the core network, and according to the usage of the current frequency resource, if there is no MBMS carrier frequency resource, then the current MBMS service is selected to be sent on the current non-MBMS carrier frequency; otherwise, The current MBMS service is sent on the MBMS carrier frequency.
  • the method in this embodiment may also be a method further included after the core network or the access network selects a carrier frequency mode according to the service attribute of the current MBMS service.
  • the result of selecting the service attribute according to the MBMS service is to use the MBMS carrier frequency to transmit the MBMS service, however, the access network selects the knot according to the current non-MBMS frequency resource usage.
  • the non-MBMS carrier frequency is used to transmit the MBMS service, at this time, the final selection may be made according to the preset priority. For example, if the priority of the selection according to the current non-MBMS frequency resource usage is higher, then The specific carrier frequency used is selected according to the usage of the non-MBMS frequency resource.
  • the core network statically selects the carrier frequency mode.
  • the correspondence between the MBMS service and the transmission carrier frequency information of different service attributes is preset.
  • the core network according to the service attribute of the current MBMS service, if the duration of the service is short, the The carrier frequency information corresponding to the short duration is selected in the set correspondence relationship, and the carrier frequency information is carried in the MBMS service start indication and sent to the access network, and the access network corresponds to the received carrier frequency information.
  • the MBMS service is transmitted frequently.
  • the present invention also provides a system for transmitting a multimedia MBMS service.
  • the system includes: a receiving unit 201, a selecting unit 202, and a sending unit 203.
  • the receiving unit 201 is configured to receive an MBMS service that needs to be delivered. And providing the received MBMS service to the selection unit 202;
  • the selecting unit 202 is configured to receive the MBMS service provided by the receiving unit 201, and select an additionally allocated MBMS carrier frequency or non-MBMS carrier frequency independent of the non-MBMS carrier frequency according to the attribute of the MBMS service or the current non-MBMS carrier frequency usage status.
  • MBMS carrier frequency, and the MBMS service and selection result is provided to the sending unit 203;
  • the sending unit 203 is configured to receive the MBMS service and the selection result provided by the selecting unit, and select the result, and send the MBMS service on the non-MBMS carrier frequency or the additionally allocated MBMS carrier frequency independent of the non-MBMS carrier frequency.
  • the system may further include an allocating unit 200 for additionally allocating a downlink carrier independent of the non-MBMS carrier frequency as the MBMS carrier frequency carrying the MBMS service.
  • the system may further include: a storage unit 210, configured to store the selected MBMS carrier frequency or Implementation rules for non-MBMS carrier frequencies;
  • the selecting unit 202 is further configured to obtain, from the storage unit 210, an implementation rule for selecting an MBMS carrier frequency or a non-MBMS carrier frequency, where the implementation rule performs the operation of selecting an MBMS carrier frequency or a non-MBMS carrier frequency;
  • the storage unit 210 may include: a selection policy storage unit 204 and/or a first correspondence storage unit 205;
  • a selection policy storage unit 204 configured to store a selection strategy for selecting an MBMS carrier frequency or a non-MBMS carrier frequency
  • the first correspondence storage unit 205 is configured to store a correspondence between different service attributes of the MBMS service and a transmission carrier frequency.
  • the selecting unit 202 is further configured to obtain, from the selection policy storage unit 204, a selection policy for selecting an MBMS carrier frequency or a non-MBMS carrier frequency, and performing the operation of selecting the MBMS carrier frequency or the non-MBMS carrier frequency according to the selection policy;
  • the first correspondence relationship storage unit 205 acquires a correspondence between different service attributes and a transmission carrier frequency, and performs an operation of selecting the MBMS carrier frequency or the non-MBMS carrier frequency according to the correspondence relationship.
  • the system may further include: a second correspondence storage unit 206, configured to store, according to the selection of the selection unit 202, a correspondence between a service type of the MBMS service and a transmission carrier frequency;
  • the selecting unit 202 is further configured to obtain, from the second correspondence storage unit 206, a correspondence between the service type and the transmission carrier frequency, and perform the operation of selecting the MBMS carrier frequency or the non-MBMS carrier frequency according to the correspondence relationship.
  • the selection unit 202 may be disposed in a core network, such as a serving GPRS support point (SGSN) located in a core network, or may be disposed in an access network, such as a radio network controller (RNC) located in an access network or Base station NodeB, etc.
  • a core network such as a serving GPRS support point (SGSN) located in a core network
  • an access network such as a radio network controller (RNC) located in an access network or Base station NodeB, etc.
  • RNC radio network controller
  • FIG. 3 is a schematic structural diagram of a selection device according to an embodiment of the present invention, as shown in FIG. 3,
  • the selection device may include: an information acquisition unit 301 and a carrier frequency selection unit 302;
  • the information obtaining unit 301 is configured to acquire an attribute of the MBMS service or obtain a usage status of the current non-MBMS carrier frequency;
  • the carrier frequency selection unit 302 is configured to select, according to the attribute of the MBMS service acquired by the information acquiring unit 301 or the usage status of the current non-MBMS carrier frequency, the carrier frequency used for transmitting the MBMS service to be the MBMS carrier frequency or the non-MBMS.
  • the MBMS carrier frequency is an additionally allocated downlink carrier independent of the non-MBMS carrier frequency for carrying the MBMS service.
  • the selection device may further include: a storage unit 310, configured to store an implementation rule for selecting an MBMS carrier frequency or a non-MBMS carrier frequency, and providing the implementation rule to the carrier frequency selection unit 302;
  • the carrier frequency selection unit 302 is further configured to obtain an implementation rule for selecting an MBMS carrier frequency or a non-MBMS carrier frequency from the storage unit 310, and perform the operation of selecting the MBMS carrier frequency or the non-MBMS carrier frequency according to the implementation rule.
  • the storage unit 310 may include: a selection policy storage unit 303 and/or a first corresponding relationship storage unit 304,
  • a selection policy storage unit 303 configured to store a selection policy of selecting an MBMS carrier frequency or a non-MBMS carrier frequency, and providing the selection strategy to the carrier frequency selection unit 302;
  • the carrier frequency selection unit 302 is further configured to obtain a selection policy from the selection policy storage unit 303, and perform the operation of selecting the MBMS carrier frequency or the non-MBMS carrier frequency according to the selection policy.
  • the selecting device may further include: a first correspondence storage unit 304, configured to store a correspondence between different service attributes of the MBMS service and a sending carrier frequency;
  • the carrier frequency selection unit 302 is further configured to acquire the correspondence relationship from the first correspondence relationship storage unit 304, and perform the selecting the MBMS carrier frequency or the non-MBMS carrier frequency according to the correspondence relationship. Operation.
  • the selecting device may further include: a second correspondence storage unit 305, configured to store, according to the selection of the carrier frequency selecting unit 302, a correspondence between a service type of the MBMS service and a sending carrier frequency;
  • the carrier frequency selection unit 302 is further configured to obtain a correspondence between the MBMS service type and the transmission carrier frequency stored in the second correspondence storage unit 305, and perform the selection of the MBMS carrier frequency or the non-MBMS according to the correspondence relationship. Frequency operation.
  • the method and system and the selecting device provided by the embodiments of the present invention additionally allocate a downlink carrier independent of the non-MBMS carrier frequency as the MBMS carrier frequency of the MBMS service, according to the attributes of the MBMS service or the current non-MBMS For the frequency usage, the MBMS service is selected to be transmitted on the MBMS carrier frequency or the non-MBMS carrier frequency.
  • the existing non-MBMS service carrier frequency is used, which reduces the impact of the MBMS service on the current non-MBMS service transmission, and reduces the occupation of the existing non-MBMS carrier frequency by the MBMS service.
  • all MBMS services and non-MBMS services use existing non-MBMS service carrier frequencies. Since the frequencies of MBMS services and non-MBMS services are different, user terminals receive different services on non-MBMS carrier frequencies.
  • the method, the system and the selecting device provided by the embodiments of the present invention allocate a separate MBMS carrier frequency for the MBMS service, and reduce the user terminal in the MBMS carrier frequency and the non-MBMS carrier. The frequency of switching between frequencies.
  • all the MBMS services and the non-MBMS services use the existing non-MBMS service carrier frequency, because the priority of the non-MBMS service set in general is higher than the priority of the non-MBMS service. Therefore, when the current non-MBMS resources are insufficient, the non-MBMS service transmission is preferentially performed, so that the MBMS service that is simultaneously transmitted is reduced, and the method and system provided by the embodiment of the present invention are MBMS.
  • the service allocates the MBMS carrier frequency separately, and can use the current non-MBMS resource usage status, and selects to use the MBMS carrier frequency or the non-MBMS carrier frequency, which satisfies the requirement of providing a large number of MBMS services at the same time.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention concerne un procédé et un système destinés à l'envoi d'un service de diffusion/multidiffusion multimédia (MBMS) et un dispositif de sélection. Le procédé consiste à diffuser la fréquence porteuse descendante sous forme de fréquence porteuse MBMS transportant le service MBMS indépendante de la fréquence porteuse non-MBMS, puis à envoyer le service MBMS sur la fréquence porteuse MBMS ou sur la fréquence porteuse non-MBMS en fonction de l'attribut de service du service MBMS ou de l'état d'utilisation de la fréquence porteuse non-MBMS actuelle.
PCT/CN2007/070385 2006-07-28 2007-07-30 Procédé et système destinés à l'envoi d'un service de diffusion/multidiffusion multimédia et dispositif de sélection WO2008028417A1 (fr)

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CN2006101039682A CN101114921B (zh) 2006-07-28 2006-07-28 一种发送多媒体广播/组播服务业务的方法及装置
CN200610103968.2 2006-07-28

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CN1921642A (zh) * 2005-08-26 2007-02-28 华为技术有限公司 实现广播组播业务通知的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114793323A (zh) * 2021-01-25 2022-07-26 中国广播电视网络有限公司 广播传输方法及装置
CN114793323B (zh) * 2021-01-25 2023-06-27 中国广播电视网络有限公司 广播传输方法及装置

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