WO2009021408A1 - Système e-mbms pour le multiplexage statistique au moyen d'ambr et procédé correspondant - Google Patents

Système e-mbms pour le multiplexage statistique au moyen d'ambr et procédé correspondant Download PDF

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Publication number
WO2009021408A1
WO2009021408A1 PCT/CN2008/001466 CN2008001466W WO2009021408A1 WO 2009021408 A1 WO2009021408 A1 WO 2009021408A1 CN 2008001466 W CN2008001466 W CN 2008001466W WO 2009021408 A1 WO2009021408 A1 WO 2009021408A1
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WO
WIPO (PCT)
Prior art keywords
ambr
group
service
statistical multiplexing
gateway
Prior art date
Application number
PCT/CN2008/001466
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English (en)
Chinese (zh)
Inventor
Yu Chen
Original Assignee
Alcatel Shanghai Bell Co., Ltd.
Alcatel Lucent
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
Publication date
Application filed by Alcatel Shanghai Bell Co., Ltd., Alcatel Lucent filed Critical Alcatel Shanghai Bell Co., Ltd.
Publication of WO2009021408A1 publication Critical patent/WO2009021408A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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 the field of mobile communications, and in particular to an evolved multimedia broadcast multicast service system and method thereof capable of performing statistical multiplexing using a set maximum bit rate.
  • MBMS Multimedia Broadcast Multicast Service
  • e-MBMS Evolved Multimedia Broadcast Multicast Service
  • MBMS/e-MBMS refers to a point-to-multipoint service in which a data source sends data to multiple users to achieve network resource sharing.
  • the MBMS/e-MBMS defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service multicast and broadcast, which undoubtedly conforms to the trend of future mobile data development.
  • AMBR aggregate maximum bit rate
  • a method for performing statistical multiplexing in an e-MBMS system wherein a plurality of e-MBMSs carried by a plurality of evolved packet systems (EPSs) are respectively carried Share the same AMBR.
  • EPSs evolved packet systems
  • a method for performing statistical multiplexing in an e-MBMS system includes: determining, at a broadcast multicast service center (BM-SC), a statistical multiplexing group and statistics for a service Reusing the group information; establishing an EPS bearer of the service at the gateway, and determining the AMBR group and the AMBR group information of the EPS bearer according to the statistical multiplexing group information determined at the BM-SC; and at the base station (eNB), according to The AMBR group information determined by the gateway schedules the service, so that multiple services belonging to the same AMBR group share resources allocated to the group.
  • BM-SC broadcast multicast service center
  • eNB base station
  • an e-MBMS system including: a BM-SC, configured to determine a statistical multiplexing group and a statistical multiplexing group information for a service, and a gateway, configured to establish an EPS bearer of the service, And determining the AMBR group and the AMBR group information of the EPS bearer according to the statistical multiplexing group information determined at the BM-SC; and the eNB, configured to schedule the service according to the AMBR group information determined by the gateway, and belong to the same AMBR group. Multiple services share the resources assigned to the group.
  • resources can be shared between different e-MBMS services, thereby providing, for example, a capacity gain of up to 80%.
  • FIG. 1 is an evolved multimedia broadcast multicast service in the embodiment (e-MBMS) system in accordance with the present invention, a schematic view of the embodiment b
  • FIG. 2 is a diagram showing a statistical multiplexing operation performed in the e-MBMS system shown in FIG. 1 according to an embodiment of the present invention.
  • FIG. 3 shows a schematic diagram of scheduling a service based on an AMBR according to an embodiment of the present invention. detailed description
  • AMBR aggregate maximum bit rate
  • EPS bearers of the same User Equipment (UE) share the same AMBR. That is, each of these EPS bearers may potentially utilize the entire AMBR, such as when other EPS bearers do not carry traffic.
  • the AMBR limits the aggregate bit rate that the EPS bearer sharing the AMBR can expect to provide, for example, the excess traffic can be discarded.
  • AMBR applies to all non-guaranteed bit rates of the UE (GBR) bearer.
  • the GBR bearer is not within the scope of the AMBR.
  • each evolved multimedia broadcast multicast service (e-MBMS) EPS bearer can be non-GBR bearer
  • the definition of AMBR can be extended to MBMS.
  • the AMBR is determined for the UE.
  • the AMBR is determined for the e-MBMS service.
  • the following definitions can be obtained:
  • the corresponding e-MBMS services carried on multiple EPS bearers share the same AMBR.
  • Each e-MBMS EPS bearer potentially utilizes the entire AMBR.
  • the e-MBMS EPS bearer sharing the AMBR constitutes an AMBR group (bundle).
  • the sum of the bit rates of each EPS bearer is greater than the AMBR.
  • the e-MBMS AMBR is only applied to the downlink.
  • statistical multiplexing can be performed based on the AMBR as defined above.
  • FIG. 1 is a schematic diagram of an e-MBMS system in accordance with an embodiment of the present invention.
  • the e-MBMS system 100 shown in FIG. 1 includes a plurality of encoders 101-1, 101-2, . . . , 101-n, a broadcast multicast service center (BM-SC) 105, a gateway 110, and a base station (eNB). 120.
  • BM-SC broadcast multicast service center
  • eNB base station
  • the encoders 101-1, 101-2, ..., 101-n receive content from the content provider server, encode it, and provide the encoded content to the BM-SC 105.
  • the BM-SC 105 receives and transmits the encoded e-MBMS content.
  • the BM-SC 105 performs the configuration of statistical multiplexing in addition to the functions of the BM-SC in the conventional art, because the BM-SC 105 can know information about the service combination.
  • the BM-SC 105 can know information about the desired combination of television channels.
  • the BM-SC 105 can know the service area and can know and possibly control the statistical characteristics of the user traffic flow, such as whether the code is constant bit rate (CBR) or variable bit rate (VBR), and whether the encoder is MPEG4 or H.264.
  • CBR constant bit rate
  • VBR variable bit rate
  • the BM-SC 105 includes a parameter acquisition means, a statistical multiplexing group, and a statistical multiplexing group information determining means (not shown).
  • the parameter acquisition means is configured to acquire the statistical parameters of the service as described above, thereby obtaining information about the service combination.
  • the statistical multiplexing group and the statistical multiplexing group information determining device are configured to determine the statistical multiplexing group and the statistical multiplexing group information according to the parameters acquired by the parameter obtaining device.
  • the statistical multiplexing group information may include: a service list in the group, for example, represented by a Temporal Mobile Group Identify (TMGI) list; and a QoS (Quality of Service) requested by the statistical multiplexing group.
  • TMGI Temporal Mobile Group Identify
  • QoS Quality of Service
  • the BM-SC 105 may further comprise an encoder coordination device (not shown), For rate control coordination between application encoders for streaming services so that the encoder can generate
  • VBR traffic but the aggregate bit rate can be kept constant.
  • the gateway 110 establishes an EPS bearer of the service, and determines the AMBR group and the AMBR group information carried by the EPS according to the statistical multiplexing group information transmitted from the BM-SC 105. For example, the AMBR of the EPS bearer group is determined based on the request QoS of the statistical multiplexing group transmitted from the BM-SC 105. Alternatively, when determining the AMBR, RAN operations such as header compression may also be considered. Thus, based on the request QoS from BM-SC I05, the EPS bearer for each service is established. Each EPS bearer is associated with an AMBR. Thus, the AMBR group was established. The gateway 110 transmits AMBR group information, such as the set of EPS bearers, service lists (e.g., TMGI), and AMBR, to the eNB 120.
  • AMBR group information such as the set of EPS bearers, service lists (e.g., TMGI), and AMBR
  • the eNB 120 implements multiplexing between different services in the same AMBR group according to the AMBR group information transmitted from the gateway 110, that is, different services sharing resources.
  • the NB 120 eventually provides the services of interest to the UE (not shown).
  • the eNB 120 may include a parameter extraction device and an AMBR group multiplexing device.
  • the parameter extraction means is configured to extract AMBR group information sent from the gateway 110, such as the EPS bearer of the AMBR group, TMGI and AMBR.
  • the AMBR group multiplexing device is configured to multiplex services belonging to the same AMBR group according to parameters extracted by the parameter extraction device, thereby realizing efficient use of resources.
  • FIG. 2 is a diagram showing a statistical multiplexing operation performed in the e-MBMS system 100 shown in FIG. 1 according to an embodiment of the present invention.
  • the BM-SC 105 determines the statistical multiplexing group and the statistical multiplexing group information by using the statistical multiplexing group and the statistical multiplexing group information determining device according to the statistical parameters of the service acquired by the parameter obtaining device.
  • the BM-SC 105 can compose a statistical multiplexing group of services satisfying the following conditions.
  • the business has the same service area
  • the service area is the same in the largest synchronization area; or
  • network planning can ensure that the service is sent within the collection of all service areas, even if it exceeds the service area of a certain service.
  • the statistical multiplexing group information determined by the BM-SC 105 can be transmitted to the gateway 110 through a Session Start message for each service (step S210 in the figure).
  • the BM-SC 105 can add new services to the statistical multiplexing group, and can also remove completed services from the group.
  • the BM-SC 105 adds/removes traffic, for example, it can pass the Session Start message/Session.
  • the Stop message is advertised to the gateway 110.
  • the BM-SC 105 needs to re-determine the new Q 0 S required for the statistical multiplexing group. This information can be sent to the gateway 110 via a Session Update message.
  • each EPS bearer is established only according to its own QoS requirements rather than the QoS of the entire group, there is no impact on the existing EPS bearers when the statistical multiplexing group is changed. This change only has an impact on the scheduling performed in the eNB 120.
  • a timestamp indicating a next scheduling interval is carried in the Session Update message or the resource reference allocation message.
  • the gateway 110 establishes an AMBR group carried by the EPS according to the statistical multiplexing group information transmitted by the BM-SC 105, and forms AMBR group information, thereby transmitting the AMBR group information to the eNB 120 (step S220).
  • processing is performed based on the AMBR group information received from the gateway 110.
  • the services belonging to the same AMBR group share resources allocated to the group. Different services are scheduled according to the resource allocation scheme based on the AMBR group, that is, reused. It should be noted that there is no interaction between the BM-SC 105 and the eNB 120, and the eNB 120 merely follows the indications of the AMBR and AMBR groups derived from the information provided by the BM-SC 105 from the gateway 110.
  • the transmission order is determined by the Operational Maintenance (0&M) or MBMS Coordination Entity (MCE), and the resources required for a particular service at a specific scheduling interval are determined by the buffered data available for scheduling.
  • the SYNC protocol ensures that each eNB has the same data for scheduling for the AMBR group.
  • the decision at each eNB is the same. This is easy to understand. It is assumed that in the case of non-multiplexing, the SYNC protocol ensures that each eNB processes the same data for a particular e-MBMS service. Therefore, the SYNC protocol can ensure that each e-MBMS service in the AMBR group has the same data in the eNB buffer for scheduling, because the principle of the SYNC protocol is unchanged, and whether the service is in the AMBR group and the SI plane data. Transmission does not matter. Therefore, the available data for the entire AMBR group is the same at each eNB.
  • Each eNB performs scheduling according to the data in the buffer and the transmission sequence/mode indicated by the MCE or configured by O&M. As shown in Figure 3, each NB has three packets of diagonal traffic, and these three packets are scheduled. When the data for this service is scheduled, it is followed by the shadow service because the scheduling scheme indicates this transmission order.
  • the embodiments of the present invention have been described above, but it should be understood that these embodiments are merely used as examples.
  • the above describes a lightweight eMBMS architecture in which the MCE function is in the eNB, so the gateway directly transmits the AMBR group information to the eNB.
  • the solution of the present invention can also be applied to a non-lightweight eMBMS architecture in which the MCE function is in a separate physical node. In this case, the gateway transmits the AMBR group information to the MCE, and the MCE forwards the information to the eNB.
  • the invention is applicable to the following applications.
  • a dedicated carrier for mobile TV which may be broadcast throughout the area of the city.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de multiplexage statistique dans un système de service multidiffusion multimédia évolué (e-MBMS), comprenant : par rapport au service le groupe de multiplexage statistique et l'information du groupe de multiplexage statistique sont déterminés au niveau du centre de service multidiffusion (BM-SC) ; au niveau de la passerelle, le porteur de système de commutation paquets évolué (EPS) du service est établi, et le groupe AMBR et l'information du groupe AMBR du porteur EPS sont déterminés en fonction de l'information du groupe de multiplexage statistique déterminé au niveau du BM-SC ; et au niveau de la station de base (eNB), le service est programmé en fonction de l'information du groupe AMBR déterminé au niveau de la passerelle, de sorte que le service multiple appartenant au même groupe AMBR partage la ressource attribuée au groupe.
PCT/CN2008/001466 2007-08-15 2008-08-14 Système e-mbms pour le multiplexage statistique au moyen d'ambr et procédé correspondant WO2009021408A1 (fr)

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Application Number Priority Date Filing Date Title
CN200710045027A CN101370157B (zh) 2007-08-15 2007-08-15 利用AMBR进行统计复用的e-MBMS系统及其方法
CN200710045027.2 2007-08-15

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JP2013502099A (ja) * 2009-08-11 2013-01-17 アルカテル−ルーセント それぞれ異なるクオリティ・オブ・サービス・クラス識別子を有するサービスの統計多重化を実行するための進化型マルチメディア・ブロードキャスト・マルチキャスト・サービス・システムおよび方法
JP2013502100A (ja) * 2009-08-11 2013-01-17 アルカテル−ルーセント ｅ−ＭＢＭＳシステム内でトラフィックをトリミングする方法およびその方法を実施するＢＭ−ＳＣ
EP2884796A4 (fr) * 2012-08-13 2015-07-15 China Academy Of Telecomm Tech Procédé, appareil et système d'attribution de ressources dans un réseau fixe à large bande

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CN102026421A (zh) * 2009-09-22 2011-04-20 中兴通讯股份有限公司 一种聚合最大位率ambr的存储方法及装置
CN102036177A (zh) * 2009-09-29 2011-04-27 华为技术有限公司 组播广播业务流量控制方法及相关设备
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JP2013502100A (ja) * 2009-08-11 2013-01-17 アルカテル−ルーセント ｅ−ＭＢＭＳシステム内でトラフィックをトリミングする方法およびその方法を実施するＢＭ−ＳＣ
EP2884796A4 (fr) * 2012-08-13 2015-07-15 China Academy Of Telecomm Tech Procédé, appareil et système d'attribution de ressources dans un réseau fixe à large bande
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