WO2010017713A1 - 控制序列号的同步实现方法和系统 - Google Patents

控制序列号的同步实现方法和系统 Download PDF

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Publication number
WO2010017713A1
WO2010017713A1 PCT/CN2009/071530 CN2009071530W WO2010017713A1 WO 2010017713 A1 WO2010017713 A1 WO 2010017713A1 CN 2009071530 W CN2009071530 W CN 2009071530W WO 2010017713 A1 WO2010017713 A1 WO 2010017713A1
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WIPO (PCT)
Prior art keywords
data
data packet
network element
data burst
link control
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PCT/CN2009/071530
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English (en)
French (fr)
Inventor
艾建勋
姚翠峰
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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.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/260,122 priority Critical patent/US8873537B2/en
Publication of WO2010017713A1 publication Critical patent/WO2010017713A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/34Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0055Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/007Open loop measurement
    • H04W56/0075Open loop measurement based on arrival time vs. expected arrival time

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for synchronizing control sequence numbers.
  • BACKGROUND With the development of the Internet network, a large number of multimedia services emerge, and the demand for mobile communication is no longer satisfied with the telephone and message services.
  • the application service is introduced in the multimedia service, and the application service is characterized by multiple users. Receive the same data at the same time, for example, video on demand, TV broadcast, video conferencing, online education, interactive games, etc.
  • a multimedia broadcast multicast service is proposed.
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS is a point-to-multipoint service that sends data to multiple users by a data source.
  • network resources can be shared, including mobile core network and access network.
  • Resource sharing especially the sharing of air interface resources, and MBMS in 3GPP can not only realize message-like multicast and broadcast of pure text rate, but also realize high-rate multimedia service multicast and broadcast.
  • MBMS Single Frequency Network is a technology that can improve the spectrum utilization of MBMS services.
  • MBSFN neighboring cells synchronously transmit the same wireless signal
  • UE user equipment
  • the plurality of cells that simultaneously transmit the MBMS service radio signal form an MBSFN synchronization area, and the cells in the MBSFN synchronization area synchronously transmit the same MBMS service signal, and these cells are referred to as MBSFN cells. Since the MBMS service is a monthly service for the entire network, the same MBMS service may be established on different lower-layer network element nodes.
  • FIG. 1 is a logical structure diagram of the upper layer network element and the lower layer network element. It can be seen that one upper layer network element and multiple lower layer networks The unit is connected to perform signalling interaction.
  • FIG. 2 is a flowchart of a method for implementing MBMS synchronization according to the prior art. As shown in FIG.
  • Step 202 The upper layer network element sends an MBMS service data packet to each lower layer network element, where the data packet carries timestamp information, data packet sequence number information, accumulated data packet length information, and the like.
  • the upper layer network element identifies the same timestamp information for one or more data packets for one or more data packets that are consecutive and need to be subjected to a radio link control (Radio Link Control, RLC) protocol layer for concatenation processing.
  • RLC Radio Link Control
  • the one or more data packets identifying the same time stamp form a data burst, and the data bursts may be a set of consecutive data packets or a single data packet;
  • the MBMS service data packet is received, wherein the data packet in the same data burst is subjected to RLC protocol layer serial connection processing, and the data packets in different data bursts are not RLC serialized;
  • Step 206 The lower layer network element processes the data packet in the same data burst according to its sequence number at the time indicated by the timestamp of its identifier.
  • Step 208 The lower layer network element according to the data packet serial number in each data packet Information, detecting whether there is a loss of the data packet, and the number of lost data packets; Step 210, the lower layer network element according to the accumulated data packet length carried by each data packet Information, detecting the cumulative length of lost packets, constructing virtual packets. Since the MBMS service data packets sent by the upper-layer network element to each lower-layer network element are identical, the lower-layer network elements can perform the same processing to implement the synchronous transmission of the MBMS service between the cells of the lower-layer network elements.
  • the virtual data packet when the lower layer network element detects the data packet loss, the virtual data packet can be constructed according to the number and total length of the lost data packets, wherein the number and total length of the virtual data packets and the lost data packet are The number is consistent with the total length.
  • the lower layer network element adds the constructed virtual data packet to the user plane protocol processing, just as the lost data packet is not lost, but the lower layer network element does not send the virtual data packet.
  • the user plane data block (RLC PDU or MAC PDU) of the packet ensures that the subsequent data packet processing is consistent with other lower layer network elements, and avoids wireless connection with neighboring cells due to inconsistency between the virtual data packet and the real data packet. interference.
  • the above-mentioned one upper-layer network element and one or more lower-layer network elements may be the same network element in physical function, or may be different network elements, and are divided into an upper layer network element and a lower layer network element.
  • Logically divide and collaborate to complete the business synchronization function That is, multiple identical or different physical network elements are divided into an upper layer network element and one or more lower layer network elements according to logical functions. The cooperation of the elements enables the MBMS service to be transmitted in a multi-cell combination manner in the lower layer network element.
  • each of the lower layer network elements independently performs radio link control protocol (RLC) processing on the MBMS service data packet, and specifically includes: allocating the RLC sequence number 'J number , RLC fragmentation and concatenation.
  • RLC radio link control protocol
  • each lower-layer network element maintains the current RLC sequence number, and performs the foregoing RLC processing according to the currently received data packet, because the initial RLC sequence number of each lower-layer network element can be synchronized by configuration, such that each The lower layer network elements can maintain the consistency of the RLC serial number allocation during data processing.
  • the lower layer network element cannot determine the correct radio link control.
  • the protocol serial number causes the problem that the RLC serial number cannot be synchronized with other lower-layer network elements that have not restarted.
  • a synchronization implementation method for controlling a sequence number is provided, which is used to implement synchronization between different network elements for implementing radio link control sequence numbers between different network elements.
  • the synchronization implementation method of the control sequence number includes: when each of the plurality of designated network elements performs radio link control protocol processing on the data packet in the data burst received by the plurality of designated network elements, The first radio link control protocol data unit corresponding to the first data packet in the burst allocates a predetermined radio link control sequence number, and the subsequent radio link control protocol data unit corresponding to the data packet of the data burst The radio link control sequence number is assigned in sequence.
  • a synchronization implementation system for controlling a sequence number is provided, which is used to implement synchronization between different network elements for implementing radio link control sequence numbers between different network elements.
  • a synchronization implementation system for controlling a serial number includes: a processing module, located in a plurality of fingers Each specified network element in the fixed network element is configured to perform a radio link control protocol processing on a data packet in a data burst received by each of the plurality of designated network elements.
  • the first radio link control protocol data unit corresponding to the first data packet in the transmission allocates a predetermined radio link control sequence number, and the subsequent radio link control protocol data units corresponding to the data packet of the data burst are sequentially Assign the radio link control sequence number.
  • FIG. 1 is a logical structural diagram of an upper layer network element and a lower layer network element according to the related art
  • FIG. 2 is a flowchart of a method for implementing MBMS synchronization according to the related art
  • FIG. 3 is a method according to the method of the present invention.
  • FIG. 4 is a schematic diagram of the allocation of the serial number of the RLC protocol according to the embodiment of the method of the present invention;
  • FIG. 5 is a synchronous implementation system of the control sequence number according to the embodiment of the system of the present invention; Structure frame diagram.
  • the lower layer NE is restarted, after the lower layer NE is restarted, if the RLC sequence number maintained by the MBMS service is lost, the lower layer network element cannot perform the service data packet with other lower layer cells.
  • the sequence number assigned after the RLC concatenated slice processing remains the same.
  • the present invention solves the problem by assigning a predetermined RLC sequence number to the first protocol data unit generated for the first data packet in each data burst.
  • a synchronization implementation method of a control sequence number is provided.
  • 3 is a flowchart of a synchronization implementation method of a control sequence number according to an embodiment of the present invention, where the method is used to implement synchronization of radio link control (RLC) sequence numbers between different network elements, as shown in FIG.
  • RLC radio link control
  • the method includes the following steps: Step S302: Each specified network element of the plurality of designated network elements performs radio link control protocol processing on the data packet in the received data burst; Step S304, performing the foregoing radio link control When the protocol is processed, each designated network element allocates a predetermined radio link control sequence number to the first radio link control protocol data unit corresponding to the first data packet in the data burst, and data of the data burst The subsequent radio link control protocol data unit corresponding to the packet sequentially allocates a radio link control sequence number, wherein the assigned radio link control sequence number is sequentially one.
  • a predetermined RLC sequence number is allocated for the first protocol data unit generated by the first data packet in each data burst, and after the lower layer network element is restarted,
  • the underlying network element that has restarted keeps the synchronization of the RLC serial number.
  • the upper layer network element and the lower layer network element may be a combination of the following network elements, but are not limited to the following combinations: Combination one, in the MBMS service synchronization networking of the universal terrestrial radio access network (UTRAN) system, the upper layer network element
  • the lower layer network element is the lower layer RNC, and the interface between the upper layer network element and the lower layer network element is an Iur interface.
  • the upper layer network element and the lower layer are the lower layer network element and the lower layer network element controller (the radio network controller, the tube is called the RNC).
  • the NEs are NEs with the same physical function.
  • the upper layer network element is the master control radio network controller (RNC) or the master node plus (master NodeB + , ie master NB+),
  • the lower layer network element is a slave node port (slave NodeB + , ie, slave ⁇ + ), wherein the interface between the upper layer network element and the lower layer network element is an Iur interface, in which the upper layer network element and the lower layer network element are physical functions.
  • the upper-layer network element is a multimedia broadcast multicast service gateway (MBMS Gateway, called MGW) or multi-cell/group.
  • Broadcast coordination entity Multi-cell/multicast Coordination Entity, the cylinder is called MCE, and the lower-layer network element is an E-UTRAN NodeB.
  • the interface between the upper-layer NE and the lower-layer NE is the M2 or M1 interface.
  • the first RLC PDU generated by the first packet in the data burst is assigned a pre-agreed RLC sequence number. That is, after a set of service data packets belonging to the same data burst are processed by the RLC layer protocol, the sequence number of the generated RLC PDU is allocated from a specific value, so that the RLC serial number between multiple lower layer network elements can be guaranteed. Stay in sync.
  • the pre-agreed RLC sequence number it can be set in the following manner: Mode 1, the protocol defines an agreed value, and each lower layer network element starts to allocate an RLC sequence number according to the value defined by the protocol for each data burst.
  • Manner 2 The same predetermined RLC sequence number is configured for each lower layer network element by using a signaling process between the upper layer network element and the lower layer network element. Specifically, the upper layer network element sends signaling to each of the lower layer network elements, and specifies an MBMS service or all MBMS service configuration values to ensure that each lower layer network element is configured with the same agreed value, and for each data burst. The protocol data unit generated by the first packet begins to allocate a predetermined RLC sequence number. In addition, for the above method, the lower layer network element needs to identify the first data packet in each data burst.
  • the upper layer network element may set the identifier information for the first data packet in each data burst by the following two methods: In the first manner, the upper layer network element separately sets the data packet sequence number of the data packet in the data burst. And the packet sequence number corresponding to the first data packet in the data burst is used as the identification information and is set to a fixed value, and the sequence number of the packet corresponding to the other data packets in the data burst starts from a fixed value according to the order of transmission. Increase in order. For example, the upper layer network element sets the sequence number of the data packet corresponding to the first data packet in each data burst to 0, and the lower layer network element detects the data packet sequence number 0 by detecting the data packet sequence number.
  • the packet is determined to be the first packet of the data burst.
  • the upper layer network element sets a data burst start identifier in the first data packet of the data burst, where the data burst start identifier is identifier information.
  • the first data packet of each data burst carries a data burst start identifier, indicating that the data packet is the first data packet of a data burst, and the first data packet of the non-data burst does not carry the data burst.
  • the start identifier is sent, and the lower layer network element determines whether the data packet belongs to the first data packet of a certain data burst by detecting the special data burst start identifier.
  • 4 is a schematic diagram of the allocation of the RLC protocol sequence number.
  • the data packet n and the data packet (n+1) belong to the data burst m, and the data packets (n+2) and (n+3) belong to the data burst. Hair ( m+1 ). It is assumed that the pre-agreed RLC sequence number of each lower layer network element is 0, that is, the first PDU generated by the first data packet in each data burst corresponds to the RLC sequence number of 0.
  • the lower layer network element When the lower layer network element performs RLC layer protocol processing on the received service data packet, performs RLC fragmentation and concatenation processing on the service data packet n and (n+1) belonging to the data burst m, and outputs the sequence number of the RLC PDU. Assigned from a fixed value of zero. That is, the RLC sequence number of the first RLC PDU generated by the data burst m is 0.
  • n is the first service data packet in the data burst m
  • the RLC sequence number assigned to the first PDU generated by n is 0, and the RLC sequence number assigned to the second PDU generated by the data burst m is Is 1, and so on
  • the RLC sequence number assigned to the pth PDU generated by the data burst m is p.
  • the lower layer network element performs RLC layer protocol processing on the received service data packet, performs RLC fragmentation and concatenation processing on the service data packet n and (n+1) belonging to the data burst m, and outputs the sequence number of the RLC PDU. Assigned from a fixed value of zero.
  • the corresponding RLC sequence number of the first RLC PDU generated by the data burst m is 0. If n is the first service data packet in the data burst m, the RLC sequence number assigned to the first PDU generated by n is 0, and the RLC sequence number assigned to the second PDU generated by the data burst m is Is 1 and increments in order.
  • the lower layer network element adopts the same method as the data burst m, that is, the data burst (m+1) of the service data packets (n+2) and (n+3) for RLC.
  • the sequence number of the output RLC PDU is still allocated from a fixed value of 0, that is, the RLC sequence number corresponding to the first RLC PDU generated by the data burst (m+1) is 0 instead of Consider the value of the RLC sequence number that has been allocated for the data burst m before ⁇ . If (n+2) is the first service data packet in the data burst (m+1), the RLC sequence number assigned to the first PDU generated by (n+2) is 0, which is the data burst. (m+1) The generated RLC sequence number of the second PDU is 1 and is incremented.
  • the same processing method as the data burst m and the data burst (m+1) is adopted, that is, for each data burst, the first PDU generated by the first data packet is corresponding.
  • the RLC serial number is set to 0. In this way, after the lower layer network element is restarted, after receiving the first data packet of a certain data burst, the lower layer network element can perform the data burst according to the method of the embodiment of the present invention. Processing, assigning a pre-agreed RLC sequence number to the first PDU generated by the first data packet in the data burst to keep the RLC sequence number synchronized with other lower layer network elements.
  • the same processing is performed on the same data burst that is received, and the pre-agreed RLC sequence number is allocated, so that the lower-layer network element after restarting and the lower-layer network without restarting can be guaranteed.
  • the data processing between the metas is kept in sync. For example, as shown in FIG. 4, after the lower layer network element is restarted, the data packet (n+1) of the data burst m is received, and the lower layer network element detects that the data packet is not the first data packet of the data burst m.
  • the lower layer network element selects not to send the data packet (n+1), and when the lower layer network element receives the data packet (n+2) and (n+3), the data packet (n+2) is detected as a data burst ( The first packet of m+1), the lower layer network element starts the above processing on the data packets (n+2) and (n+3), that is, the first PDU generated by the data packet (n+2) is allocated in advance.
  • the agreed RLC serial number, and the RLC serial number is a fixed value.
  • FIG. 5 is a structural structural diagram of a synchronization implementation system for controlling a serial number according to an embodiment of the present invention. The system is configured to synchronize RLC serial numbers between different network elements. As shown in FIG.
  • the system includes The processing module 10, the setting module 20 and the transmitting module 30.
  • the functions of each module are described in detail below.
  • the processing module 10 is located in each of the plurality of designated network elements, and is configured to perform radio link control on the data packets in the data burst received by each of the plurality of designated network elements.
  • the first radio link control protocol data unit corresponding to the first data packet in the data burst is allocated with a predetermined radio link control sequence number, and the subsequent radio corresponding to the data burst data packet
  • the link control protocol data unit sequentially allocates a radio link control sequence number
  • the setting module 20 is located at an upper layer network element of the plurality of designated network elements, and is configured to set identifier information for the first data packet in the data burst, and identify the information by using the identifier information.
  • the data packet is the first data packet;
  • the sending module 30 is located in the upper layer network element, and is configured to send the identifier information to the plurality of designated network elements, and the module can be connected to the processing module 10 and the setting module 20.
  • the processing that the setting module 20 sets the identifier information for the first data packet in the data burst includes: the setting module separately sets a data packet sequence number for the data packet in the data burst, and the data burst
  • the serial number of the data packet corresponding to a data packet is used as the identification information and is set to a fixed value.
  • the sequence number of the data packet corresponding to other data packets in the data burst is from a fixed value according to the order of transmission.
  • the setting module 20 sets the identification information of the first data packet in the data burst to include: the setting module sets a data burst start identifier in the first data packet of the data burst, where the data burst begins The identification is identification information.
  • the synchronization implementation system of the control sequence number provided by the embodiment of the present invention allocates a predetermined RLC sequence number to the first protocol data unit generated by the first data packet in each data burst, after the lower layer network element is restarted. It can synchronize the RLC serial number with other lower-layer network elements that have not restarted, and avoid wireless interference of neighboring cells. As described above, by means of the synchronization implementation method and/or system of the control sequence number provided by the present invention, a predetermined RLC sequence number is assigned by the first protocol data unit generated for the first data packet in each data burst.
  • the RLC serial number can be synchronized with other lower-layer network elements that have not been restarted, thereby avoiding wireless interference of neighboring cells.
  • 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.
  • 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, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

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Description

控制序列号的同步实现方法和系统
技术领域 本发明涉及通信领域 , 尤其涉及一种控制序列号的同步实现方法和系 统。 背景技术 随着 Internet网络的发展, 大量多媒体业务涌现出来, 人们对移动通信 的需求已不再满足于电话和消息业务, 目前, 多媒体业务中引入了应用业务, 应用业务的特点是多个用户能同时接收相同的数据, 例如, 视频点播、 电视 广播、 视频会议、 网上教育、 互动游戏等。 为了有效地利用移动网络资源, 提出 了多媒体广播组播业务
( Multimedia Broadcast Multicast Service, 筒称为 MBMS )技术, MBMS为 一个数据源向多个用户发送数据的点到多点业务, 通过该业务, 能够实现网 络资源共享, 包括移动核心网和接入网的资源共享, 尤其是空口资源的共享, 且 3GPP中的 MBMS不仅能够实现纯文本氏速率的消息类组播和广播,而且 能够实现高速率的多媒体业务组播和广播。
MBMS 单频网传输方式 (MBMS Single Frequency Network, 筒称为 MBSFN ) 是一种能够提高 MBMS业务频谱利用率的技术。 在 MBSFN中, 相邻小区同步发送相同的无线信号, 用户设备(UE )可以将来自不同基站的 信号视为多径信号。 同步发送 MBMS业务无线信号的多个小区组成 MBSFN 同步区域,在 MBSFN同步区域内的小区,同步发送相同的 MBMS业务信号 , 这些小区称为 MBSFN小区。 由于 MBMS业务是面向全网的月 务,同一个 MBMS业务可能建立在不 同的下层网元节点上。 具体地, 上层网元向下层网元发送数据流, 其中, 该 数据流中包括多个数据突发 ( data burst ), 每个数据突发中包括多个数据包。 目前, 采用下述方法来实现多个网元在小区间的 MBMS业务同步, 图 1 是 上层网元和下层网元的逻辑结构才 架图, 可以看出, 一个上层网元与多个下 层网元相连接, 进行信令交互, 图 2是根据现有技术的 MBMS 同步实现方 法的流程图, 如图 2所示, 包括以下处理: 步骤 202, 上层网元向各个下层网元发送 MBMS业务数据包, 其中, 该数据包中携带时间戳信息、 数据包序列号信息、 累计数据包长度信息等。 对于一个或多个连续并且需要进行无线链路控制 ( Radio Link Control, 筒称 为 RLC )协议层进行串接处理的数据包, 上层网元对该一个或多个数据包标 识相同的时间戳信息, 这些标识了相同时间戳的一个或多个数据包组成一个 数据突发(data burst ), —个数据突发可以是一组连续的数据包, 也可以是单 独的一个数据包; 步骤 204, 对于每个下层网元, 其接收到上述 MBMS业务数据包, 其 中,对同一个数据突发中的数据包进行 RLC协议层串接处理 , 不同数据突发 中的数据包不进行 RLC串接; 步骤 206 , 下层网元对同一个数据突发中的数据包在其标识的时间戳指 示的时刻开始按照其序列号进行处理; 步骤 208 , 下层网元根据每个数据包中的数据包序列号信息, 检测是否 存在数据包的丢失, 以及丢失的数据包的个数; 步骤 210, 下层网元根据每个数据包携带的累计数据包长度信息, 检测 丢失的数据包的累计长度, 构造虚拟数据包。 由于上层网元发送给每个下层网元的 MBMS业务数据包完全相同, 这 样各下层网元可以进行完全一致的处理, 以实现 MBMS 业务在各下层网元 的小区间的同步发送。 通过上述方法, 下层网元在检测到数据包丢失时, 可以根据丢失的数据 包的个数和总长度, 构造虚拟数据包, 其中, 这些虚拟数据包的个数和总长 度与丢失数据包的个数和总长度一致 , 构造虚拟数据包之后 , 下层网元将构 造的虚拟数据包加入到用户面协议处理中 ,就像丢失的数据包没有丢失一样, 但是下层网元并不发送包含虚拟数据包的用户面数据块 (RLC PDU 或者 MAC PDU ), 来保证对后续数据包处理和其它下层网元一致, 并避免由于虚 拟数据包和真实数据包的不一致而导致的与相邻小区间的无线干扰。 需要说明的是,上述的一个上层网元和一个或多个下层网元在物理功能 上可以是相同的网元, 也可以是不同的网元, 将其分为上层网元和下层网元 只是从逻辑上进行的划分, 协作完成业务同步功能。 即, 多个相同或不同的 物理网元按照逻辑功能划分为一个上层网元和一个或多个下层网元, 这些网 元协同合作实现在下层网元小区以多小区合并方式发送 MBMS业务。 在上述多个网元的小区间的 MBMS业务同步实现方法中, 每个下层网 元独立完成对 MBMS业务数据包的无线链路控制协议( RLC )处理, 具体包 括: 分配 RLC序歹' J号、 RLC分片和串接 ( segmentation and concatenation )。 在正常情况下 ,每个下层网元维护当前的 RLC序列号, 并根据当前接收到的 数据包进行上述 RLC处理, 由于各下层网元的初始 RLC序列号可以通过配 置来保持同步的, 这样每个下层网元在数据处理过程中 , 都可以保持 RLC序 列号分配的一致性。 但是, 在现有的多个网元的小区间的 MBMS业务同步实现方法中, 在 某个下层网元因为管理原因或者异常情况发生重新启动后, 该下层网元不能 确定正确的无线链路控制协议序列号, 导致无法与其他没有发生重启的下层 网元保持 RLC序列号的同步的问题。 发明内容 考虑到相关技术中存在的下层网元重新启动后,不能确定正确的无线链 路控制协议序列号,而无法与其他没有发生重启的下层网元保持 RLC序列号 的同步的问题而提出本发明 , 为此, 本发明的主要目的在于提供一种改进的 控制序列号的同步实现方案 , 以解决上述问题至少之一。 为了上述目的 , 才艮据本发明的一个方面 , 提供一种控制序列号的同步实 现方法, 该方法用于实现不同网元间用于实现不同网元间无线链路控制序列 号的同步。 才艮据本发明的控制序列号的同步实现方法包括:多个指定网元中的每个 指定网元对其接收到的数据突发中的数据包进行无线链路控制协议处理时 , 对数据突发中的第一个数据包对应的第一个无线链路控制协议数据单元分配 预定的无线链路控制序列号 , 并对该数据突发的数据包对应的后续无线链路 控制协议数据单元依次分配无线链路控制序列号。 为了上述目的 , 根据本发明的另一个方面 , 提供一种控制序列号的同步 实现系统, 该系统用于实现不同网元间用于实现不同网元间无线链路控制序 列号的同步。 根据本发明的控制序列号的同步实现系统包括: 处理模块, 位于多个指 定网元中的每个指定网元, 用于对多个指定网元中的每个指定网元对其接收 到的数据突发中的数据包进行无线链路控制协议处理时 , 对数据突发中的第 一个数据包对应的第一个无线链路控制协议数据单元分配预定的无线链路控 制序列号, 并对该数据突发的数据包对应的后续无线链路控制协议数据单元 依次分配无线链路控制序列号。 通过本发明的上述至少一个技术方案 ,为每个数据突发中的第一个数据 包生成的第一个 ¼、议数据单元分配预定的 RLC序列号,在下层网元重新启动 后, 能够与其他没有发生重新启动的下层网元保持 RLC序列号的同步, 避免 了相邻小区的无线干 4尤。 附图说明 附图用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与本 发明的实施例一起用于解释本发明 , 并不构成对本发明的限制。 在附图中: 图 1是根据相关技术的上层网元和下层网元的逻辑结构框架图; 图 2是根据相关技术的 MBMS同步实现方法的流程图; 图 3是才艮据本发明方法实施例的控制序列号的同步实现方法的流程图; 图 4是根据本发明方法实施例的 RLC协议序列号的分配示意图; 图 5 是才艮据本发明系统实施例的控制序列号的同步实现系统的结构框 架图。 具体实施方式 由于下层网元存在重新启动的可能性, 因此在下层网元重新启动之后, 在该 MBMS业务维护的 RLC序号丢失的情况下, 下层网元无法与其他下层 小区对该业务数据包进行 RLC串接分片处理后分配的序号保持一致,本发明 通过为每个数据突发中的第一个数据包生成的第一个协议数据单元分配预定 的 RLC序列号来解决该问题, 下面将结合附图详细描述本发明。 需要说明的 是, 如果不冲突, 本申请中的实施例以及实施例中的特征可以相互组合。 方法实施例 根据本发明实施例 , 提供了一种控制序列号的同步实现方法。 图 3是才艮据本发明实施例的控制序列号的同步实现方法的流程图,该方 法用于实现不同网元间无线链路控制 (RLC ) 序列号的同步, 如图 3所示, 该方法包括以下步骤: 步骤 S302, 多个指定网元中的每个指定网元对其接收到的数据突发中 的数据包进行无线链路控制协议处理; 步骤 S304, 在进行上述无线链路控制协议处理时, 每个指定网元对数 据突发中的第一个数据包对应的第一个无线链路控制协议数据单元分配预定 的无线链路控制序列号, 并对该数据突发的数据包对应的后续无线链路控制 协议数据单元依次分配无线链路控制序列号, 其中, 分配的无线链路控制序 列号依次力口一。 通过本发明实施例提供的技术方案,为每个数据突发中的第一个数据包 生成的第一个协议数据单元分配预定的 RLC 序列号, 在下层网元重新启动 后, 能够与其他没有发生重新启动的下层网元保持 RLC序列号的同步。 其中, 上层网元和下层网元可以是下列网元的组合方式, 但不限于下列 的组合: 组合一, 在通用陆地无线接入网 (UTRAN ) 系统的 MBMS业务同步组 网中, 上层网元为上层无线网络控制器 ( Radio Network Controller, 筒称为 RNC ), 下层网元为下层 RNC, 其中, 上层网元和下层网元间的接口为 Iur 接口, 在该组合中, 上层网元和下层网元为物理功能相同的网元。 组合二, 在增强的高速分组接入系统(HSPA + )的 MBMS业务同步组 网中, 上层网元为主控无线网络控制器( RNC )或者主节点加 ( master NodeB + ,即 master NB+ ),下层网元为从属节点力口( slave NodeB + ,即 slave ΝΒ+ ), 其中, 上层网元和下层网元间的接口为 Iur接口, 在该组合中, 上层网元和 下层网元为物理功能相同而逻辑功能不同的网元。 组合三,在长期演进系统(Long-Term Evolution,筒称为 LTE )的 MBMS 业务同步组网中, 上层网元为多媒体广播组播业务网关 ( MBMS Gateway , 筒称为 MGW ) 或者多小区 /组播协调实体 (Multi-cell/multicast Coordination Entity , 筒称为 MCE ), 下层网元为演进节点 B ( E-UTRAN NodeB ), 其中, 上层网元和下层网元间的接口为 M2或 Ml接口。 本发明实施例应用于多个下层网元接收到上层网元发送的数据突发时 , 对于每个数据突发, 每个下层网元对归属于同一个数据突发的数据包进行 RLC 层协议处理时, 将该数据突发中的第一个数据包所生成的第一个 RLC PDU分配一个预先约定的 RLC序列号。 即, 一组归属于同一个数据突发的 业务数据包经过 RLC层协议处理后 , 生成的 RLC PDU的序列号从某个特定 值开始分配, 这样能够保证多个下层网元间的 RLC序列号保持同步。 对于预先约定的 RLC序列号, 可以通过下列方式进行设置: 方式一, 协议定义一个约定的值, 各个下层网元按照协议定义的值为每 个数据突发的数据包开始分配 RLC序列号。 方式二, 通过上层网元和下层网元间的信令过程, 对每个下层网元配置 相同的预定 RLC序列号。 具体地, 上层网元发送信令到各个下层网元, 指定 某个 MBMS业务或者所有 MBMS业务配置某个约定的值, 以保证各个下层 网元配置相同的约定值, 并为每个数据突发的第一个数据包生成的协议数据 单元开始分配预定的 RLC序列号。 另外, 对于上述方法, 下层网元需要识别每个数据突发中的第一个数据 包。 具体地, 上层网元可以通过下述两种方式对每个数据突发中的第一个数 据包设置标识信息: 方式一, 上层网元对数据突发中的数据包分别设置数据包序列号, 并将 数据突发中的第一个数据包对应的数据包序列号作为标识信息并设置为固定 值 , 数据突发中的其他数据包对应的数据包序列号根据发送的顺序从固定值 开始依次递增。 例如, 上层网元将每个数据突发中的第一个数据包对应的数 据包序列号设置为 0 , 下层网元通过检测到数据包序列号, 在检测到数据包 序列号为 0的数据包时, 确定该数据包为数据突发的第一个数据包。 方式二, 上层网元为数据突发的第一个数据包中设置数据突发开始标 识, 其中, 数据突发开始标识为标识信息。 每个数据突发的第一个数据包携 带数据突发开始标识, 指示该数据包为某数据突发的第一个数据包, 非数据 突发的第一个数据包则不携带该数据突发开始标识,下层网元通过检测该特 殊的数据突发开始标识,判断数据包是否属于某个数据突发的第一个数据包。 下面对本发明实施例进行具体说明。 图 4是 RLC协议序列号的分配示意图, 如图 4所示, 数据包 n和数据 包 (n+1 ) 属于数据突发 m,数据包 (n+2 ) 和 ( n+3 ) 属于数据突发( m+1 )。 假设各下层网元预先约定的 RLC 序列号为 0 , 即, 每个数据突发中的 第一个数据包产生的第一个 PDU对应的 RLC 序列号为 0。 下层网元对接收到的业务数据包进行 RLC层协议处理时 , 对属于数据 突发 m的业务数据包 n和( n+1 )进行 RLC分片和串接处理,输出的 RLC PDU 的序列号从固定值 0开始分配。 即, 数据突发 m生成的第一个 RLC PDU的 RLC 序列号为 0。如果 n为数据突发 m中的第一个业务数据包, 则为 n产生 的第一个 PDU分配的 RLC 序列号为 0 ,为该数据突发 m产生的第二个 PDU 分配的 RLC 序列号为 1 , 以此类推,为该数据突发 m产生的第 p个 PDU 分配的 RLC 序列号为 p。 下层网元对接收到的业务数据包进行 RLC层协议处理时 , 对属于数据 突发 m的业务数据包 n和( n+1 )进行 RLC分片和串接处理,输出的 RLC PDU 的序列号从固定值 0开始分配。 即, 数据突发 m生成的第一个 RLC PDU的 对应 RLC 序列号为 0。如果 n为数据突发 m中的第一个业务数据包, 则为 n 产生的第一个 PDU分配的 RLC 序列号为 0 , 为该数据突发 m产生的第二个 PDU分配的 RLC 序列号为 1 , 依次递增。 对于数据突发(m+1 ), 下层网元其采用与数据突发 m相同的方法, 即 数据突发( m+1 ) 的业务数据包( n+2 )和( n+3 )进行 RLC分片和串接处理 时,输出的 RLC PDU的序列号仍从固定值 0开始分配, 即 ,数据突发( m+1 ) 生成的第一个 RLC PDU对应的 RLC 序列号为 0 , 而不考虑在 匕之前的数据 突发 m已经分配的 RLC 序列号的值。 如果(n+2 )为数据突发(m+1 ) 中的 第一个业务数据包, 则为 (n+2 ) 产生的第一个 PDU分配的 RLC 序列号为 0, 为该数据突发 (m+1 ) 产生的第二个 PDU分配的 RLC 序列号为 1 , 依次递增。 对于其他数据突发 , 均采用与上述数据突发 m、 数据突发( m+ 1 )相同 的处理方法, 即, 对于每个数据突发, 都将其第一个数据包产生的第一 PDU 对应的 RLC序列号设置为 0。 这样, 通过上述方法, 在下层网元重新启动之后, 在接收到某个数据突 发的第一个数据包后, 则该下层网元可以按照本发明实施例的方法, 对该数 据突发进行处理, 为该数据突发中的第一个数据包生成的第一个 PDU 分配 预先约定 RLC序列号, 使其与其他下层网元保持 RLC序列号的同步。 对于 没有重新启动的下层网元,对接收到的相同的数据突发 ,也进行相同的处理 , 分配预先约定的 RLC序列号,这样可以保证重新启动后的下层网元和没有重 新启动的下层网元间的数据处理保持同步。 例如, 如图 4所示, 下层网元重新启动后, 接收到数据突发 m的数据 包(n+1 ), 下层网元检测到该数据包不是数据突发 m的第一个数据包, 则下 层网元选择不发送数据包( n+1 ), 当下层网元接收到数据包( n+2 )和( n+3 ) 时, 检测到数据包(n+2 )为数据突发 ( m+1 ) 的第一个数据包, 则下层网元 开始对数据包 (n+2 ) 和 (n+3 ) 进行上述处理, 即将数据包 (n+2 ) 生成的 第一个 PDU分配预先约定的 RLC序列号, 且该 RLC序列号为固定值。 系统实施例 图 5是才艮据本发明实施例的控制序列号的同步实现系统的结构框架图, 该系统用于实现不同网元间 RLC序列号的同步, 如图 5所示, 该系统包括处 理模块 10、 设置模块 20和发送模块 30。 以下详细描述各模块的功能。 处理模块 10, 位于多个指定网元中的每个指定网元, 用于对多个指定 网元中的每个指定网元对其接收到的数据突发中的数据包进行无线链路控制 协议处理时 , 对数据突发中的第一个数据包对应的第一个无线链路控制协议 数据单元分配预定的无线链路控制序列号 , 并对该数据突发的数据包对应的 后续无线链路控制协议数据单元依次分配无线链路控制序列号; 设置模块 20, 位于多个指定网元的上层网元, 用于对数据突发中的第 一个数据包设置标识信息, 通过标识信息表示该数据包为第一个数据包; 发送模块 30, 位于上层网元, 用于将标识信息发送给多个指定网元, 该模块可以连接至处理模块 10和设置模块 20。 具体地, 上述设置模块 20对数据突发中的第一个数据包设置标识信息 的处理包括: 设置模块对数据突发中的数据包分别设置数据包序列号 , 并将 数据突发中的第一个数据包对应的数据包序列号作为标识信息并设置为固定 值 , 数据突发中的其他数据包对应的数据包序列号根据发送的顺序从固定值 ·½ϋϊ |ί曽。 另外, 该设置模块 20对数据突发中的第一个数据包设置标识信息的处 理包括: 设置模块为数据突发的第一个数据包中设置数据突发开始标识, 其 中 , 数据突发开始标识为标识信息。 通过本发明实施例提供的控制序列号的同步实现系统,为每个数据突发 中的第一个数据包生成的第一个协议数据单元分配预定的 RLC序列号,在下 层网元重新启动后 ,能够与其他没有发生重新启动的下层网元保持 RLC序列 号的同步, 避免了相邻小区的无线干扰。 如上所述, 借助于本发明提供的控制序列号的同步实现方法和 /或系统, 通过为每个数据突发中的第一个数据包生成的第一个协议数据单元分配预定 的 RLC序列号, 在下层网元重新启动后, 能够与其他没有发生重新启动的下 层网元保持 RLC序列号的同步, 避免了相邻小区的无线干扰。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 4青申和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种控制序列号的同步实现方法, 用于实现不同网元间无线链路控制序 列号的同步, 其特征在于, 包括:
多个指定网元中的每个指定网元对其接收到的数据突发中的数据 包进行无线链路控制协议处理时, 对所述数据突发中的第一个数据包对 应的第一个无线链路控制协议数据单元分配预定的无线链路控制序列 号 , 并对该数据突发的数据包对应的后续无线链路控制协议数据单元依 次分配无线链路控制序列号。
2. 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括:
所述多个指定网元的上层网元对所述数据突发中的第一个数据包 设置标识信息, 通过所述标识信息表示该数据包为第一个数据包, 并将 所述标识信息发送给所述多个指定网元。
3. 根据权利要求 2所述的方法, 其特征在于, 所述多个指定网元的上层网 元对所述数据突发中的第一个数据包设置标识信息的处理具体包括: 所述指定网元的上层网元对所述数据突发中的数据包分别设置数 据包序列号 , 并将所述数据突发中的第一个数据包对应的数据包序列号 作为所述标识信息并设置为固定值 , 所述数据突发中的其他数据包对应 的数据包序列号根据发送的顺序从所述固定值开始依次递增。
4. 根据权利要求 2所述的方法, 其特征在于, 所述指定网元的上层网元对 所述数据突发中的第一个数据包设置标识信息的处理具体包括:
所述指定网元的上层网元为所述数据突发的第一个数据包中设置 数据突发开始标识, 其中, 所述数据突发开始标识为所述标识信息。
5. 根据权利要求 1至 4中任一项所述的方法, 其特征在于,
所述指定网元的上层网元包括以下之一: 长期演进系统的多媒体网 关、 通用陆地无线接入网的主控无线网络控制器、 增强的高速分组接入 系统的主节点加; 所述指定网元包括以下之一: 长期演进系统的演进节点 B、 通用陆 地无线接入网的从属无线网络控制器、 增强的高速分组接入系统的从属 节点加。
6. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述数据突发 为一组标识相同时间戳信息的数据包; 或者所述数据突发为一组进行无 线链路控制串接处理的数据包; 或者所述数据突发为一个数据包。
7. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 分配的所述无 线链路控制序列号依次加一。
8. 一种控制序列号的同步实现系统, 用于实现不同网元间无线链路控制序 列号的同步, 其特征在于, 所述系统包括:
处理模块, 位于多个指定网元中的每个指定网元, 用于对多个指定 网元中的每个指定网元对其接收到的数据突发中的数据包进行无线链路 控制协议处理时, 对所述数据突发中的第一个数据包对应的第一个无线 链路控制协议数据单元分配预定的无线链路控制序列号 , 并对该数据突 发的数据包对应的后续无线链路控制协议数据单元依次分配无线链路控 制序列号。
9. 根据权利要求 8所述的系统, 其特征在于, 进一步包括:
设置模块, 位于所述多个指定网元的上层网元, 用于对所述数据突 发中的第一个数据包设置标识信息, 通过所述标识信息表示该数据包为 第一个数据包;
发送模块, 位于所述上层网元, 用于将所述标识信息发送给所述多 个指定网元。
10. 根据权利要求 9所述的系统 , 其特征在于 , 所述设置模块对所述数据突 发中的第一个数据包设置所述标识信息的处理具体包括:
所述设置模块对所述数据突发中的数据包分别设置数据包序列号 , 并将所述数据突发中的第一个数据包对应的数据包序列号作为所述标识 信息并设置为固定值, 所述数据突发中的其他数据包对应的数据包序列 号根据发送的顺序从所述固定值开始依次递增。
1. 根据权利要求 9所述的系统 , 其特征在于 , 所述设置模块对所述数据突 发中的第一个数据包设置所述标识信息的处理具体包括:
所述设置模块为所述数据突发的第一个数据包中设置数据突发开 始标识, 其中, 所述数据突发开始标识为所述标识信息。
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Publication number Priority date Publication date Assignee Title
US8724548B2 (en) * 2010-04-22 2014-05-13 Qualcomm Incorporated Counter check procedure for packet data transmission
CN104581824A (zh) * 2013-10-17 2015-04-29 中兴通讯股份有限公司 一种数据包分流传输的方法及系统
US10523549B1 (en) * 2019-06-02 2019-12-31 Cybertoka Ltd Method and system for detecting and classifying networked devices
CN110851186B (zh) * 2019-11-08 2022-12-16 迈普通信技术股份有限公司 网络设备重启的方法、装置、电子设备及可读存储介质
CN110995605B (zh) * 2019-11-25 2023-01-24 浙江中控技术股份有限公司 一种报文同步方法、系统及通信设备
WO2022141113A1 (zh) * 2020-12-29 2022-07-07 华为技术有限公司 多播业务通信的方法和通信装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101039175A (zh) * 2007-03-27 2007-09-19 中兴通讯股份有限公司 Rlc在无线网络控制器间同步的方法及系统
CN101047492A (zh) * 2007-03-29 2007-10-03 中兴通讯股份有限公司 实现rlc序列号在无线网络控制器间同步的方法及系统
CN101047437A (zh) * 2007-03-23 2007-10-03 中兴通讯股份有限公司 无线链路控制序列号同步方法及无线网络控制器
CN101051864A (zh) * 2007-03-27 2007-10-10 中兴通讯股份有限公司 用于mbms业务的实现rlc序列号在rnc间同步的方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111210B (fi) * 2000-08-14 2003-06-13 Nokia Corp Datapakettinumeroiden synkronointi pakettivälitteisessä tiedonsiirrossa
US6765885B2 (en) * 2001-02-09 2004-07-20 Asustek Computer Inc. Determination of acceptable sequence number ranges in a communications protocol
KR100595583B1 (ko) * 2001-07-09 2006-07-03 엘지전자 주식회사 이동통신시스템에서 핸드오버에 따른 패킷 데이터 전송 방법
US20030147370A1 (en) * 2002-02-05 2003-08-07 Chih-Hsiang Wu Inter Node B serving HS-DSCH cell change mechanism in a high speed wireless communication system
TWI220815B (en) * 2002-05-06 2004-09-01 Asustek Comp Inc Method and apparatus for handling abnormal transmission status in acknowledged mode and non-acknowledged mode
DE60312432T2 (de) * 2002-05-10 2008-01-17 Innovative Sonic Ltd. Verfahren zur bestimmten Auslösung einer PDCP-Sequenznummern-Synchronisierungsprozedur
US7254144B2 (en) * 2002-06-21 2007-08-07 Innovative Sonic Limited Method for synchronizing a start value for security in a wireless communications network
US8228917B2 (en) * 2005-04-26 2012-07-24 Qualcomm Incorporated Method and apparatus for ciphering and re-ordering packets in a wireless communication system
US8295265B2 (en) * 2005-11-16 2012-10-23 Htc Corporation Method for handling radio bearer messages during reset and reestablishment in a wireless system
JP4729000B2 (ja) * 2006-04-27 2011-07-20 イノヴァティヴ ソニック リミテッド 無線通信システムにおいて復号パラメータを同期させる方法及び装置
EP1919235B1 (en) * 2006-10-31 2020-04-15 Alcatel Lucent A base station, a mobile communication network and a method for synchronising the delivery of broadcast data in a single frequency mobile communication network
CN101222484A (zh) 2007-01-09 2008-07-16 中兴通讯股份有限公司 一种无线链路控制层协议数据单元的实现方法
US8687495B2 (en) * 2007-03-16 2014-04-01 Qualcomm Incorporated Method and apparatus for polling in a wireless communication system
US8358669B2 (en) * 2007-05-01 2013-01-22 Qualcomm Incorporated Ciphering sequence number for an adjacent layer protocol in data packet communications
US8437306B2 (en) * 2007-08-08 2013-05-07 Qualcomm Incorporated Layer 2 tunneling of data during handover in a wireless communication system
KR101525252B1 (ko) * 2007-12-31 2015-06-02 삼성전자주식회사 무선 통신 시스템에서의 하이퍼 프레임 넘버 비동기 방지 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047437A (zh) * 2007-03-23 2007-10-03 中兴通讯股份有限公司 无线链路控制序列号同步方法及无线网络控制器
CN101039175A (zh) * 2007-03-27 2007-09-19 中兴通讯股份有限公司 Rlc在无线网络控制器间同步的方法及系统
CN101051864A (zh) * 2007-03-27 2007-10-10 中兴通讯股份有限公司 用于mbms业务的实现rlc序列号在rnc间同步的方法
CN101047492A (zh) * 2007-03-29 2007-10-03 中兴通讯股份有限公司 实现rlc序列号在无线网络控制器间同步的方法及系统

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014100261A2 (en) 2012-12-20 2014-06-26 Dow Global Technologies Llc Glycolide-based polyesters
WO2014100254A1 (en) 2012-12-20 2014-06-26 Dow Global Technologies Llc Barrier films of fdca-based polyesters
WO2014100265A1 (en) 2012-12-20 2014-06-26 Dow Global Technologies Llc Multilayer films of fdca-based polyesters
WO2014100258A2 (en) 2012-12-20 2014-06-26 Dow Global Technologies Llc Ndca-based polyesters made with isosorbide
WO2014100256A2 (en) 2012-12-20 2014-06-26 Dow Global Technologies Llc Fdca-based polyesters

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