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    • 5. 发明授权
    • Method and transmitter for an efficient packet data transfer in a transmission protocol with repeat requests
    • 用于具有重复请求的传输协议中的有效分组数据传输的方法和发射机
    • US07870259B2
    • 2011-01-11
    • US10479268
    • 2002-05-24
    • Michael MeyerJanne PeisaBela RathonyiJoachim SachsStefan WagerToomas Wigell
    • Michael MeyerJanne PeisaBela RathonyiJoachim SachsStefan WagerToomas Wigell
    • H04B1/44G06F15/16G06F15/173G06F15/177
    • H04L1/1887H04L1/1685H04L1/1809H04L1/1812H04L1/1845H04L1/1883
    • In a method for the transmission of data packets (D) from a transmitter (TR) to a receiver (RE) identification of transmitted data packets are stored. Defective data packets (D) are detected by the receiver (RE), status messages (S) which request defective data packets for retransmission are sent from the receiver (RE) to the transmitter (TR) and retransmissions of requested data packets are performed according to the status messages (S). The transmitter (TR) evaluates a first status message (S11) with an identification of at least one first requested data packet and retransmits the first data packet. The transmitter (TR) then initializes a timing unit according to the retransmission of the first data packet, wherein the timing unit or a threshold for the timing unit is attributable to the first data packet. When the transmitter evaluates a further status message (S12) and detects at least one further data packet that is requested for a retransmission, it selects the further data packet if the timing unit has reached the threshold or if the identification of the further data packet is different from the identification of the first data packets. Only the selected data packets are retransmitted. A transmitter and software programs embodying the invention are also described.
    • 在从发射机(TR)向接收机(RE)发送数据分组(D)的方法中,存储所发送的数据分组的标识。 由接收机(RE)检测到有缺陷的数据分组(D),从接收机(RE)向发射机(TR)发送请求用于重传的有缺陷的数据分组的状态消息(S),并且根据 到状态消息(S)。 发射机(TR)用至少一个第一请求数据分组的标识来评估第一状态消息(S11),并重发第一数据分组。 然后,发射机(TR)根据第一数据分组的重传来初始化定时单元,其中定时单元或定时单元的阈值可归因于第一数据分组。 当发射机评估进一步的状态消息(S12)并且检测到至少一个另外的数据分组被请求进行重传时,如果定时单元已经达到阈值,则其选择另外的数据分组,或者如果另外的数据分组的标识是 不同于第一个数据包的识别。 只重新选择数据包。 还描述了体现本发明的发射机和软件程序。
    • 7. 发明申请
    • Method and devices for efficient data transmission link control in mobile multicast communication systems
    • 移动组播通信系统中高效数据传输链路控制的方法和设备
    • US20060154603A1
    • 2006-07-13
    • US10527001
    • 2002-09-07
    • Joachim SachsMichael MeyerStefan WagerJorg HuschkeMikael LarssonPeter Larsson
    • Joachim SachsMichael MeyerStefan WagerJorg HuschkeMikael LarssonPeter Larsson
    • H04B7/24
    • H04L1/1635H04L1/1642H04L1/1685H04L1/1832H04L1/187H04L12/1868H04L12/189H04L47/10H04L47/14H04L47/15H04L47/27H04L2001/0093H04W56/00
    • A method for a data transmission with ARQ protocol using multicast groups such as GSM, GPRS or UMTS in a mobile communication system is described. Data is transmitted in data blocks (PDU) from a transmitter (T) to a plurality of receivers (R1-RM), said data blocks (PDU) being identifiable by an identification (e.g. a sequence number). The receivers (R1-RM) send status indications to the transmitter (T) whether a data block (PDU) is correctly received. The transmitter (T) is adapted to perform retransmissions according to the status indications and has a transmission window comprising the transmission status for the data blocks (PDU) according to their identification. In the method, a synchronization to the transmitter (T) is performed for at least one first of said receivers (Ri), wherein a range of identifications of transmitted data block (PDU) is selected in said synchronization. The transmitter (T) deletes the transmission status for the selected range of identifications from the transmitter window and the first receiver (Ri) stops sending status indications for the data blocks (PDU) corresponding to the selected range of identifications. In addition, a transmitter and a computer program implementing the method are described. As an example the transmitter can be a RNC extending the RLC and MAC-HSPDA protocols standardized by 3GPP for obtaining efficient and reliable point-to-multipoint radio links.
    • 描述了在移动通信系统中使用诸如GSM,GPRS或UMTS之类的多播组的ARQ协议进行数据传输的方法。 数据在数据块(PDU)中从发射机(T)传输到多个接收机(R 1 -RM),所述数据块(PDU)可通过识别(例如序列号)来识别。 接收机(R 1 -RM)向发射机(T)发送状态指示是否正确接收到数据块(PDU)。 发射机(T)适于根据状态指示执行重发,并具有包括根据其标识的数据块(PDU)的传输状态的传输窗口。 在该方法中,对所述接收机(Ri)中的至少一个执行与发射机(T)的同步,其中在所述同步中选择发送数据块(PDU)的标识的范围。 发射机(T)从发射机窗口删除所选择的标识范围的传输状态,并且第一接收机(Ri)停止发送对应于所选择的标识范围的数据块(PDU)的状态指示。 另外,描述实现该方法的发射机和计算机程序。 作为示例,发射机可以是扩展由3GPP标准化的RLC和MAC-HSPDA协议的RNC,用于获得有效和可靠的点对多点无线电链路。