WO2010124423A1 - Mbms业务传输方法和设备 - Google Patents

Mbms业务传输方法和设备 Download PDF

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Publication number
WO2010124423A1
WO2010124423A1 PCT/CN2009/000474 CN2009000474W WO2010124423A1 WO 2010124423 A1 WO2010124423 A1 WO 2010124423A1 CN 2009000474 W CN2009000474 W CN 2009000474W WO 2010124423 A1 WO2010124423 A1 WO 2010124423A1
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Prior art keywords
service
group
transmission
services
resource block
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PCT/CN2009/000474
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English (en)
French (fr)
Inventor
陈宇
王河
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上海贝尔股份有限公司
阿尔卡特朗讯
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Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯 filed Critical 上海贝尔股份有限公司
Priority to CN2009801574265A priority Critical patent/CN102326420A/zh
Priority to EP09843835.1A priority patent/EP2426959B1/en
Priority to US13/318,087 priority patent/US9125175B2/en
Priority to KR20117025462A priority patent/KR101271551B1/ko
Priority to JP2012507566A priority patent/JP5210462B2/ja
Priority to PCT/CN2009/000474 priority patent/WO2010124423A1/zh
Publication of WO2010124423A1 publication Critical patent/WO2010124423A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08User group management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Definitions

  • the present invention relates to the transmission of MBMS services, and in particular to a method and apparatus for transmitting MBMS services having different MCS/SDU error rates in an LTE system. Background technique
  • the current RAN2 has agreed to multiplex MBMS services in the LTE system and has developed a solution with the same MCS/SDU error rate.
  • An aspect of the present invention provides a transmission method for MBSFN, including the steps of: dividing a plurality of services to be transmitted into a plurality of service groups according to a rate, each service group including at least one service; A plurality of services are described, wherein each service within each service group is sequentially transmitted in a predetermined order.
  • the step of transmitting the plurality of services by service group comprises transmitting the plurality of services by service group on a single multicast channel.
  • resource blocks used for transmission of individual service groups are dynamically allocated.
  • the first resource block occupied by the first service of the latter service group is continuous with the last resource block occupied by the last service of the previous service group.
  • the location of resource blocks of traffic within each group is determined relative to the location of the first resource block of the resource blocks dynamically allocated to all groups.
  • the resource blocks used for the transmission of the respective service groups are pre-allocated.
  • the location of resource blocks of services within each group is relative to each of the pre-allocated The location of the first resource block of the resource block of the group is determined.
  • the step of transmitting the plurality of services by the service group comprises transmitting the corresponding service group on the respective multicast channels.
  • the resource blocks used for the transmission of traffic within each service group are dynamically allocated. ⁇ ' ' '
  • a transmission device for a user MBSFN including: a grouping unit configured to divide a plurality of services to be transmitted into a plurality of service groups according to an error rate, each service group including at least one service; And the unit is configured to transmit the plurality of services according to the service group, wherein each service in each service group is sequentially transmitted in a predetermined order.
  • the transmission unit is configured to transmit the plurality of services by service group on a single multicast channel.
  • the transmission device further comprises a resource allocation unit configured to dynamically allocate resource blocks for transmission to the respective service groups.
  • the transmission device further comprises a resource allocation unit configured to pre-allocate the resource blocks used for the transmission to the respective service groups.
  • the location of resource blocks of traffic within each group is determined relative to the location of the first resource block of resource blocks pre-assigned to each group.
  • the transmission unit ⁇ is configured to transmit a respective service group on a respective multicast channel.
  • the transmission device further comprises a resource allocation unit configured to dynamically allocate resource blocks for transmission to traffic within the respective service group.
  • MBMS services with different MCS/SDUs can be multiplexed and transmitted in UEs in a single MBSFN.
  • FIG. 1 is a schematic diagram of a communication system in accordance with an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a transmission device according to an embodiment of the present invention.
  • FIG. 3 is a flow chart of a transmission method according to an embodiment of the present invention
  • Figure 4 is a schematic view for describing a first example according to the present invention
  • Figure 5 is a schematic view for describing a second example according to the present invention.
  • Fig. 6 is a schematic view showing a third example according to the present invention. detailed description
  • FIG. 1 shows a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the data of the service to be transmitted is transmitted from the BMSC to the base station eNB through the gateway GW, and then sent by the base station eNB to the user equipment UE in the cell.
  • a single frequency network (SFN) is formed by adjacent different cells for transmitting MBMS services.
  • MBSFN a single frequency network that transmits MBMS services
  • FIG. 2 shows a schematic structural diagram of a transmission device according to an embodiment of the present invention.
  • services having different SDU error rates are grouped and constitute a service reuse group, and then services within the same group are dynamically multiplexed.
  • these traffic groups are transmitted on different resources in the same or different MCH (Multicast Channel).
  • a transmission apparatus includes a signaling processing unit 101 that receives and processes signaling from an MCE, and groups the services SI, S2, S3, ... to be transmitted according to a required error rate.
  • the grouping unit 104, and the resource allocation for the service group and each service that is, the resource allocation unit 102 for allocating the corresponding resource blocks for transmitting the respective services, and the transmission unit 103 for transmitting the services by the service group on the allocated resources. If there are multiple services in the same group, the different services can be sorted in the group P3 ⁇ 4 ' according to the QoS or the delay level.
  • Figs. 3 is a flow chart of a transmission method in accordance with an embodiment of the present invention.
  • the signaling processing unit 101 of the transmission device receives signaling from the MCE to multiplex transmission of the traffic and transmission mode, for example, a standard for grouping services such as an SDU error rate, each service group Modulation and coding scheme (MCS) and configuration of multicast channels in the cell.
  • a standard for grouping services such as an SDU error rate, each service group Modulation and coding scheme (MCS) and configuration of multicast channels in the cell.
  • MCS Modulation and coding scheme
  • packet unit 104 groups the traffic according to the required SDU error rate. For example, there are 5 services that need to be multiplexed and divided into first service groups ⁇ S1, S2, S4 ⁇ and second service groups ⁇ S3, S5 ⁇ according to different error rates.
  • the resource allocation unit 102 allocates resource blocks to services in different service groups and groups according to a resource allocation scheme given in signaling from the MCE, such as static allocation or dynamic allocation, and is in a scheduling period. The beginning of the scheduling information is sent to the UE, so that the UE can know the transmission mode of these service groups, and the location of the resource blocks used for the transmission of data of each service in the frame or subframe.
  • step S13 the transmission unit 103 transmits the data of each service according to the service group on the allocated resource blocks, and the respective services in each service group are sequentially transmitted in a predetermined order.
  • each of the components shown in the figures can be implemented in multiple applications in practical applications, and the multiple components shown are in practical applications. It can also be integrated in a chip or a device. Even the MCE may be a physical or logical portion of a base station that functions as described in the embodiments of the present invention.
  • the transmission device and MCE in embodiments of the present invention may also include any unit or device for other purposes.
  • a single multicast channel MCH is configured in a cell of a base station, and all services are transmitted on resource blocks of the multicast channel.
  • the grouping unit 104 groups according to the SDU error rate, and divides S1 to S5 into two groups as described above.
  • the MCE configures different MCSs for each group, such as MCS1 and MCS2, and sends them to the base station and the UE through signaling.
  • the transmission unit 103 first transmits the first group, which is sequentially transmitted in the first group, and the first service of the second group is transmitted next to the last MAC PDU of the last service of the first group.
  • the first resource block occupied by the first service of the latter service group is continuous with the last resource block occupied by the last service of the previous service group. It can be seen that in the first instance, the resource blocks are dynamically allocated. If the data in the group does not occupy the MAC PDU, padding is performed. In addition, at the beginning of the transmission, scheduling information is sent to the UE, wherein the location of the resource block indicating the respective service is determined with respect to the location of the first resource block within the scheduling period. In the case of this example, if the first group occupies resource blocks #1 ⁇ #100, the transmission of the second group will start from #101 resource blocks. This makes the waste of resources less.
  • the packet unit 104 is grouped according to the SDU error rate, and the MCE configures its own MCH and MCS for each group, such as MCH1, MCS1, and MCH2, MCS2.
  • the MCE transmits the set of services of the number of MCH channels on each channel to the base station and the UE.
  • the corresponding service group is transmitted on each MCH, and dynamic scheduling is performed in the group, and the scheduling information is sent to the base station and the UE through signaling. If the data in the group does not occupy the MAC PDU, it is padded.
  • scheduling information is sent to the UE, wherein the location of the resource block indicating each service in the group is determined relative to the location of the first resource block in a scheduling period on the MCH.
  • each group is pre-allocated with a predetermined resource block (ie, a static resource allocation) on the MCH, for example, the first group of allocated resource blocks #1 ⁇ # 100.
  • the second group of allocated resource blocks #101 ⁇ #200 is sent to the base station and the UE. Even if the first group of services does not occupy all of the allocated resource blocks, the remaining resource blocks are not assigned to the second group.
  • Each service group is transmitted on the same MCH, and each group has its own MCS, such as MCS1 and MCS2, which are determined by the MCE and sent to the base station and the UE through signaling, which are sequentially transmitted and dynamically scheduled within the group.
  • some embodiments also include a machine readable or computer readable program storage device (eg, a digital data storage medium) and encoding machine executable or computer executable program instructions, wherein the instructions perform some of the above methods Or all steps.
  • the program storage device can be a digital memory, a magnetic storage medium (such as a disk and tape), a hardware or an optically readable digital data storage medium.
  • the implementation also includes a programming computer that performs the steps of the above method.

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

Description

MBMS业务传输方法和设备 技术领域
本发明涉及 MBMS 业务的传输, 具体涉及在 LTE ***中传输具有不同 MCS/SDU差错率的 MBMS业务的方法和设备。 背景技术
当前的 RAN2已经同意在 LTE***中对 MBMS业务进行多路复用,并且对 以相同 MCS/SDU差错率的方案已经进行了研发。
但是, 同样存在对不同 MCS/SDU差错率下的 MBMS业务复用的要求, 也 就是说网络中存在具有不同 MCS/SDU差错率的业务。 自然, 这些业务的复用与 具有相同 MCS配置的业务的复用是不同的。因此需要研发出针对不同 SDU/MCS 差错率的 MBMS业务复用技术。 ' 发明内容
本发明的目的是提供一种 MBMS业务传输方法和设备, 它能够实现对不同 MCS/SDU差错率的 MBMS业务的复用。
本发明的一个方面提供了一种用于 MBSFN的传输方法, 包括步骤: 按照差 锖率将待传输的多个业务分成多个业务组, 每个业务组包括至少一个业务; 按业 务组传输所述多个业务,其中在每个业务组内的各个业务按照预定的顺序依次传 输。
根据本发明的实施例,所述按业务组传输所述多个业务的步骤包括:在单个 多播信道上按业务组传输所述多个业务。 '
根据本发明的实施例, 各个业务组的传输所用的资源块是动态分配的。 根据本发明的实施例,后一业务组的第一个业务所占用的第一个资源块与前 一业务组的最后一个业务所占用的最后一个资源块之间是连续的。
根据本发明的实施例,各组内的业务的资源块的位置是相对于动态分配给所 有组的资源块的首个资源块的位置朵确定的。
根据本发明的实施例, 各个业务组的传输所用的资源块是预先分配的。 根据本发明的实施例,各组内的业务的资源块的位置是相对于预先分配给各 个组的资源块的首个资源块的位置来确定的。
根据本发明的实施例, 所述按业务组传输所述多个业务的步骤包括:在各自 的多播信道上传输相应的业务组。
根据本发明的实施例,各个业务组内的业务的传输所用的资源块是动态分配 的。 · ' ' '
本发明的另一方面提供了一种用户 MBSFN的传输设备, 包括: 分组单元, 被配置为按照差错率将待传输的多个业务分成多个业务组,每个业务组包括至少 一个业务; 传输单元, 被配置为按业务组传输所述多个业务, 其中在每个业务组 内的各个业务按照预定的顺序依次传输。
根据本发明的实施例,所述传输单元被配置为在单个多播信道上按业务组传 输所述多个业务。
根据本发明的实施例,传输设备,还包括资源分配单元, 被配置为向各个业务 组动态分配传输所用的资源块。
根据本发明的实施例, 传输设备还包括资源分配单元,被配置为向各个业务 组预先分配传输所用的资源块。
根据本发明的实施例,各组内的业务的资源块的位置是相对于预先分配给各 个组的资源块的首个资源块的位置来确定的。
根据本发明的实施例,所述传输单元 ^配置为在各自的多播信道上传输相应 的业务组。
根据本发明的实施例,传输设备还包括资源分配单元, 被配置为向各个业务 组内的业务动态分配传输所用的资源块。
利用该方法和设备, 具有不同 MCS/SDU的 MBMS业务能够被复用并传输 单 MBSFN中的 UE。 附图说明
通过参考以下结合附图对所采用的优选实施例的详细描述,本发明的上述目 的、 优点和特征将变得显而易见, 其中:
图 1是根据本发明实施例的通信***的示意图;
图 2是根据本发明实施例的传输设备的结构示意图;
图 3是根据本发明实施例的传输方法的流程图; 图 4是描述根据本发明的第一实例的示意图;
图 5是描述根据本发明的第二实例的示意图; 以及
图 6是描述根据本发明的第三实例的示意图。 具体实施方式
本发明的实施例将在下面结合附图进行描述。在下面的描述过程中,省略了 对于本发明来说是不必要的细节和功能, 以防止对本发明的理解造成混淆。
图 1示出了根据本发明实施例的通信***的结构示意图。 如图 1所示, 要传 输的业务的数据通过网关 GW从 BMSC传输到基站 eNB, 然后由基站 eNB下发给 其小区内的用户设备 UE。在 LTE中, 针对相同的 MBMS业务传输, 由相邻的不同 小区构成单频网 (SFN), 用于传输 MBMS业务。 以下将传输 MBMS业务的单频 网称为 MBSFN0
图 2示出了根据本发明实施例的传输设备的结构示意图。
根据本发明的实施例, 将具有不同 SDU差错率的业务分组并且构成业务复 用组, 然后对同一组内的业务进行动态多路复用。 接下来, 在相同或不同 MCH (多播信道) 中的不同资源上传输这些业务组。
如图 2所示, 根据本发明实施例的传输设备包括接收并处理来自 MCE的信 令的信令处理单元 101, 按照要求的差错率对待传输的业务 SI , S2, S3, …… 进行分组的分组单元 104, 和对业务组以及各个业务进行资源分配, 也就是分配 相应的资源块用于传输各个业务, 的资源分配单元 102, 以及在分配的资源上按 业务组传输这些业务的传输单元 103, 其中如果同一组内有多个业务, 则可以按 照 Qos或者延迟等级等对不同的业务在组 P¾ '进行排序。
下面对照附图 3〜6详细描述本发明的传输设备和传输方法。图 3是根据本发 明实施例的传输方法的流程图。
在步骤 S10, 传输设备的信令处理单元 101接收来自 MCE的要对业务进行多 路复用传输以及传输方式的信令,例如, 如 SDU差错率之类对业务进行分组的标 准, 各个业务组的调制编码方案 (MCS ) 以及小区内的多播信道的配置等。
在步骤 SH, 分组单元 104按照要求的 SDU差错率对业务进行分组。例如有 5 个业务需要进行多路复用传输,按照不同的差错率将其分成第一业务组 {Sl, S2, S4}以及第二业务组 {S3, S5}。 在步骤 S12, 资源分配单元 102按照来自 MCE的信令中给出的资源分配方 案,例如静态分配还是动态分配等,对不同的业务组和组内的业务进行资源块的 分配, 并且在调度周期的开始将调度信息发送给 UE, 使得 UE能够得知这些业务 组的传输方式, 以及各个业务的数据的传输所用的资源块在帧或子帧中的位置。
在步骤 S13, 传输单元 103在分配的资源块上按照业务组传输各个业务的数 据, 在每个业务组内的各个业务按照预定的顺序依次传输。
虽然上面以分离的功能模块的形式描述了本发明的实施例所提出的设备, 图中示出的每一个组件在实际应用中可以用多个器件实现,示出的多个组件在实 际应用中也可以集成在一块芯片或一个设备中。 甚至 MCE也可以是某一个基站 中起到本发明的实施方式所描述的功能的物理部分或逻辑部分。本领域普通技术 人员应该理解, 本发明实施方式中的传输设备和 MCE还可包括用于其它目的的 任何单元或装置。
另外, 根据本发明的第一实例, 如图 4'所示, 基站的小区内配置了单一的多 播信道 MCH, 所有的业务都在该多播信道的资源块上传输。 分组单元 104按照 SDU差错率分组, 将 S1〜S5如上所述划分成两组。 MCE给各组配置不同的 MCS, 例如 MCS1和 MCS2, 并通过信令发给基站和 UE。 在传输设备中, 传输单元 103 先传输第一组,在第一组内是顺序传输的, '第二组的首个业务紧接着第一组的最 后一个业务的最后一个 MAC PDU传输。 换言之, 后一业务组的第一个业务所占 用的第一个资源块与前一业务组的最后一个业务所占用的最后一个资源块之间 是连续的。 可见, 在第一实例中, 资源块是动态分配的。 如果组内的数据没有占 满 MAC PDU, 则进行填充(padding)。 另外, 在传输的幵始, 向 UE发调度信息, 其中指出各个业务的资源块的位置用相对于 个调度周期内的首个资源块的位 置来确定。 在该实例的情况下, 如果第一组占用资源块 #1~#100, 则第二组的传 输将从 #101个资源块开始。 这样使得资源的浪费较少。
根据本发明的第二实例,如图 5所示,小区内存在多个 MCH,在不同的 MCH 上传输相应组的业务。 如上所述, 分组单元 104按照 SDU差错率分组, MCE给各 组配置自己的 MCH和 MCS, 例如 MCH1、 MCS1和 MCH2、 MCS2。 在这种情况 下, 在会话开始由 MCE将 MCH信道的个数在各个信道上传输哪一组业务传输给 基站和 UE。 在各个 MCH上传输相应的业务组, 在组内进行动态调度, 调度信息 通过信令发送给基站和 UE。 如果组内的数据没有占 MAC PDU, 则进行填充。 另 外, 在传输的开始, 向 UE发调度信息, 其中指出组内各个业务的资源块的位置 相对于该 MCH上的一个调度周期内的首个资源块的位置来确定。
根据本发明的第三实例, 如图 6所示, 按照 SDU差错率分组, 给各组预先分 配该 MCH上的预定资源块(即静态资源分配),例如第一组分配资源块 #1〜#100, 第二组分配资源块 #101~#200, 下发给基站和 UE。 即使第一组的业务没有将分配 的资源块全部占用, 也不将剩余的资源块分给第二组。 各业务组在同一 MCH上 传输, 并且各组有自己的 MCS, 例如 MCS1和 MCS2, 由 MCE确定并通过信令发 给基站和 UE, 在组内是顺序传输和动态调度的。 如果组内的数据没有占满 MACPDU则进行填充。 另外, 在传输的开始, 向 UE发调度信息, 其中指出组内 各个业务的资源块的位置相对于该 MCH上的一个调度周期内的首个资源块的位 置来确定。
本领域技术人员应该很容易认识到, 可以通过编程计算机实现上述方法的 不同步骤。在此, 一些实施方式同样 ¾括机器可读或计算机可读的程序存储设备 (如, 数字数据存储介质) 以及编码机器可执行或计算机可执行的程序指令, 其 中, 该指令执行上述方法的一些或全部步骤。例如, 程序存储设备可以是数字存 储器、 磁存储介质(如磁盘和磁带) 、 硬件或光可读数字数据存储介质。 实施方 式同样包括执行上述方法的所述步骤的编程计算机。
描述和附图仅示出本发明的原理。 因此应该意识到, 本领域技术人员能够 建议不同的结构, 虽然这些不同的结构未在此处明确描述或示出,但体现了本发 明的原理并包括在其精神和范围之内。此外,所有此处提到的示例明确地主要只 用于教学目的以帮助读者理解本发明的原理以及发明人所贡献的促进本领域的 构思, 并应被解释为不是对这些特定提到的示例和条件的限制。此外, 此处所有 提到本发明的原则、 方面和实施方式的陈述及其特定的示例包含其等同物在内。

Claims

权利要求
1、一种用于 MBSFN的传输方法, 包括步骤:
按照差错率将待传输的多个业务分成多个业务组,每个业务组包括至少一个 业务;
按业务组传输所述多个业务,其中在每个业务组内的各个业务按照预定的顺 序依次传输。
2、 如权利要求 1所述的传输方法, 其中所述按业务组传输所述多个业务的 步骤包括: 在单个多播信道上按业务组传输所述多个业务。
3、 如权利要求 2所述的传输方法, 其中各个业务组的传输所用的资源块是 动态分配的。
4、 如权利要求 3所述的传输方法, 其中后一业务组的第一个业务所占用的 第一个资源块与前一业务组的最后一个业务所占用的最后一个资源块之间是连 续的。
5、 如权利要求 3所述的传输方法,,其中各组内的业务的资源块的位置是相 对于动态分配给所有组的资源块的首个资源块的位置来确定的。
6、 如权利要求 2所述的传输方法, 其中各个业务组的传输所用的资源块是 预先分配的。 ' ' '
7、 如权利要求 6所述的传输方法, 其中各组内的业务的资源块的位置是相 对于预先分配给各个组的资源块的首个资源块的位置来确定的。
8、 如权利要求 1所述的传输方法;'其中所述按业务组传输所述多个业务的 步骤包括: 在各自的多播信道上传输相应的业务组。
9、 如权利要求 8所述的传输方法, 其中各个业务组内的业务的传输所用的 资源块是动态分配的。
10、一种用户 MBSFN的传输设备, 包括: ·
分组单元, 被配置为按照差错率将待传输的多个业务分成多个业务组, 每个 业务组包括至少一个业务;
传输单元, 被配置为按业务组传输所述多个业务, 其中在每个业务组内的各 个业务按照预定的顺序依次传输。
11、 如权利要求 10所述的传输设备, 其中所述传输单元被配置为在单个多 播信道上按业务组传输所述多个业务。
12、 如权利要求 11所述的传输设备, 还包括资源分配单元, 被配置为向各 个业务组动态分配传输所用的资源块。 ' .
13、 如权利要求 12所述的传输设备, 其中后一业务组的第一个业务所占用 的第一个资源块与前一业务组的最后一个业务所占用的最后一个资源块之间是 连续的。
14、 如权利要求 12所述的传输设备, 其中各组内的业务的资源块的位置是 相对于动态分配给所有组的资源块的首个资源块的位置来确定的。
15、 如权利要求 11所述的传输设备, 还包括资源分配单元, 被配置为向各 个业务组预先分配传输所用的资源块。
16、 如权利要求 15所述的传输设 4, 其中各组内的业务的资源块的位置是 相对于预先分配给各个组的资源块的首个资源块的位置来确定的。
17、 如权利要求 10所述的传输设备, 其中所述传输单元被配置为在各自的 多播信道上传输相应的业务组。
18、 如权利要求 17所述的传输设备, 还包括资源分配单元, 被配置为向各 个业务组内的业务动态分配传输所用的资源块。
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US13/318,087 US9125175B2 (en) 2009-04-29 2009-04-29 Method and apparatus for transmitting MBMS services
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