CN1303773C - Method of transmitting data packets - Google Patents

Method of transmitting data packets Download PDF

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Publication number
CN1303773C
CN1303773C CN 02813917 CN02813917A CN1303773C CN 1303773 C CN1303773 C CN 1303773C CN 02813917 CN02813917 CN 02813917 CN 02813917 A CN02813917 A CN 02813917A CN 1303773 C CN1303773 C CN 1303773C
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China
Prior art keywords
transmitter
transmission
receiver
e1
data packet
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CN 02813917
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Chinese (zh)
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CN1539215A (en
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C·赫尔曼
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皇家菲利浦电子有限公司
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Priority to DE2001132577 priority Critical patent/DE10132577A1/en
Priority to DE2001142123 priority patent/DE10142123A1/en
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Publication of CN1539215A publication Critical patent/CN1539215A/en
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Publication of CN1303773C publication Critical patent/CN1303773C/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. van Duuren system ; ARQ protocols
    • H04L1/1829Arrangements specific to the receiver end
    • H04L1/1858Transmission or retransmission of more than one copy of acknowledgement message
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L2001/125Arrangements for preventing errors in the return channel

Abstract

本发明涉及一种在发送机和接收机之间传输数据分组的方法,其中,该接收机被设计成为当数据分组被无误差地接收时,发送一个肯定确认消息到发送机,其中,该接收机被设计成为当数据分组被有误差地接收时,发送一个否定确认消息到发送机,其中,该接收机被设计成为如果尽管由接收机发送了一个否定确认消息却仍没有发生相关数据分组的重复传输,则为了请求该数据分组的重复传输而发送一个重复消息到发送机,并且,其中,该接收机被设计成为每当发送机接收到一个否定确认消息或者一个重复消息时,就进行数据分组的重复传输。 The present invention relates to a method for transmitting data packets between a transmitter and a receiver, wherein the receiver is designed to, when a data packet is received without error, it transmits a positive acknowledgment message to the transmitter, wherein the receiver when the machine is designed to be received erroneous data packet is to send a negative acknowledgment message to the transmitter, wherein the receiver is designed to be sent by the receiver despite If a negative acknowledgment message related data packet still does not occur repeated transmission, the repeat transmission of the data packet to a request to send a duplicate message sender, and wherein the receiver is designed each time the transmitter receives a negative acknowledgment message or be a duplicate message, it performs data repeated transmission of the packet.

Description

传输数据分组的方法 The method of transmission of data packets

本发明涉及在发送机和接收机之间传输数据分组的方法。 The present invention relates to a method for transmitting data packets between a transmitter and a receiver.

例如,众所周知的这样一种方法,该方法来自文件“Tdoc12A010024,Signaling and Timing Considerations for HS-DSCH(用于HS-DSCH的信令和定时考虑),出处是:2001年4月5-6日在索非亚安第波利斯(Sophia Antipolis)的朗讯技术,关于HSDPA的3GPP TSG RAN WG1&WG2会议”。 For example, a well-known method, the method from the file "Tdoc12A010024, Signaling and Timing Considerations for HS-DSCH (HS-DSCH for signaling and timing considerations), the source is: 5-6 April 2001 in Andean Sofia Antipolis (Sophia Antipolis) of Lucent technologies, on the HSDPA 3GPP TSG RAN WG1 & amp; WG2 meeting. "

在这个众所周知的方法中,当接收机无误差地接收到一个数据分组时,它发送一个肯定确认消息到发送机,并且,当接收机有误差地接收到一个数据分组时,它发送一个否定确认消息到发送机。 In this known method, when the receiver receives an error-free data packet, it sends a positive acknowledgment message to the transmitter, and the receiver has an error when a data packet is received, it sends a negative acknowledgment message to the transmitter.

如果发送机接收到一个肯定确认消息,则它通过发送一个新数据分组而继续。 If the transmitter receives a positive acknowledgment message, it continues by transmitting a new data packet.

如果发送机接收到一个否定确认消息,则它将再次发送相关数据分组。 If the transmitter receives a negative acknowledgment message, it sends the relevant data packet again.

如果发送机把接收机发送的否定确认消息错误地解释为肯定确认消息并且因此通过发送一个新数据分组而继续,则被接收机有误差地接收的数据分组信息和被发送机错误地解释为肯定确认消息的否定确认消息的主题将被丢失。 If the receiver transmits to the transmitter a negative acknowledgment message erroneously interpreted as a positive acknowledgment message and thus continues by transmitting a new data packet, the data packet receiver were received error message and the transmitter is erroneously interpreted as affirmative negative acknowledgment message acknowledgment message topics will be lost.

本发明的一个目的是提供一种改进的误差处理方法,以及用于此目的的数据传输系统。 An object of the present invention to provide an improved error processing method, and a data transmission system for this purpose.

关于所述方法,利用在发送机和接收机之间传输数据分组的方法来达到这个目的,其中,该接收机被设计成为当数据分组被无误差地接收时,发送一个肯定确认消息到发送机,其中,该接收机被设计成为当数据分组被有误差地接收时,发送一个否定确认消息到发送机,其中,该接收机被设计成为如果尽管由接收机发送了一个否定确认消息却仍没有发生相关数据分组的重复传输,则为了请求数据分组的重复传输,发送一个重复消息到发送机,并且,其中,该发送机被设计成为无论何时发送机接收到一个否定确认消息或者一个重复消息,都进行数据分组的重复传输。 With respect to the method, using the method of transferring data packets between a transmitter and a receiver to achieve this object, wherein, the receiver is designed to, when a data packet is received without error, it transmits a positive acknowledgment message to the transmitter wherein, the receiver is designed as a data packet is received when there is an error, transmitting a negative acknowledgment message to the transmitter, wherein the receiver is designed to be sent by the receiver despite If a negative acknowledgment message still does not repeated transmission of data packets occurs, the repeated transmission of data packets to the request, sending a repeat message to the transmitter, and wherein the transmitter is designed to be whenever the transmitter receives a negative acknowledgment message or a repeated message are repeated transmission of data packets.

本发明基于这样一种思想:在接收机发送的一个否定确认消息在它的传输路径上变形为一个肯定确认消息或者被发送机错误地解释为一个肯定确认消息的时候,提供所考虑的数据分组的更新传输的可能性。 The present invention is based on the idea: the receiver transmits a negative acknowledgment message is a positive acknowledgment message modification or transmitter is incorrectly interpreted as a positive acknowledgment when the message on its transmission path, the data packet under consideration to provide the possibility of updating transmission.

为了这个目的,提供了如果尽管由接收机发送了一个否定确认消息却仍没有发生相关数据分组的更新传输并且发送机已发送一个新的数据分组而不是所要求的错误接收的数据分组重复传输,则接收机发送一个重复消息到发送机。 For this purpose, there is provided if sent by the receiver despite a negative acknowledgment message still does not transmit updated data packet has occurred and the transmitter transmits a packet repeatedly transmitted erroneously received packet is a new data instead of the requested data, the receiver transmits a repeated message to the transmitter.

重复消息通知发送机应该再次发送前面的传输周期的数据分组,而否定确认消息通知发送机应该再次发送当前传输周期的数据分组。 Duplicate notification message transmitter shall transmit the data packet transmission period in front again, the negative acknowledgment message sender is notified that the data packet should be transmitted in the current transmission period again.

传输周期被认为是一个数据分组的发送和一个肯定或否定确认消息或一个重复消息的接收之间的时间周期。 Transmission period is considered to be the time period between sending a data packet and a positive or negative acknowledgment message or a repeated message is received.

在本发明的一个有利实施方案中,发送机已为其接收了一个肯定确认消息的那些数据分组被发送机放到中间存储器中至少另一个传输周期。 In one advantageous embodiment of the invention, the transmitter has received a positive acknowledgment for that data packets transmitted message is placed into the intermediate storage unit of at least another transmission period. 接收肯定确认消息被理解为该发送机已经把一个接收的确认信号解释为一个肯定确认信号。 Receiving a positive acknowledgment message is understood that the sender has a reception acknowledgment signal is interpreted as a positive acknowledgment signal. 如果发送机接收一个重复消息,则在后续传输周期期间,相应的数据分组随后将仍在存储器中,并且,它可以被发送机没有问题地再次发送。 If the transmitter receives a duplicate message, then during a subsequent transmission period, the corresponding data packet is then still in the memory, and it can be transmitted without problems transmitter again.

在本发明的一个有利实施方案中,每个数据分组和一个序号一起被发送。 In one advantageous embodiment of the invention, each data packet and a sequence number are transmitted together. 优选地,这是一个1比特序号。 Preferably, this is a 1-bit sequence number. 无论何时发送机接收一个对于被发送的数据分组的肯定确认消息,发送机都改变该序号。 Whenever the transmitter receives an acknowledgment message for a positive data packets to be transmitted, the transmitter serial number changed. 在接收肯定确认消息后,一个带有改变的序号的新数据分组将被发送。 After receiving the acknowledgment message, a new data packet with a sequence number to be transmitted changes.

这为接收机区分数据分组的第一次传输和数据分组的重复传输提供了可能。 First transmission and repeated transmission of data packets which the receiver to distinguish a data packet may be provided.

在本发明的一个有利实施方案中,肯定和否定确认消息也具有序号。 In one advantageous embodiment of the invention, the positive and negative acknowledgment messages have sequence number.

在本发明的一个有利实施方案中,提供了一个发送数据分组的时间帧结构。 In one advantageous embodiment of the invention, there is provided a frame structure of a transmission time of data packets. 该时间帧结构可以包括一个或几个时间帧。 The time frame structure may comprise one or several time frames. 一个时间帧包括N个时隙,每个时隙被保留用于一个数据分组的传输。 A frame comprises N time slots, each time slot is reserved for the transmission of a data packet. 一个时间帧被保留用于在一个发送机和一个接收机之间数据分组的传输。 A time frame is reserved for a transmitter and a receiver between the transmission of data packets. 优选地,时间帧在给定的时间间距被重复。 Preferably, the time frame in a given time interval is repeated. 例如,如果提供两个时间帧,则第一个时间帧可以被用于在第一个发送机和第一个接收机之间传输,并且第二个时间帧用于在第一个发送机和第二个接收机之间传输,或者用于在第二个发送机和第一个接收机之间传输。 For example, if two time frames, the first frame may be a time for transmission between the first transmitter and a first receiver and a second frame for the first time a transmitter and a second transmission between the receivers, or for transmission between the second transmitter and the first receiver.

该时间帧结构在发送机端和在接收机端都被实现并且因此是同步的。 The time frame structure and thus are implemented at the receiver is synchronized at the transmitter end and. 这意味着,肯定和否定确认消息以及重复消息在各自时间帧的时隙中被发送。 This means that the positive and negative acknowledgment message and repeating the message is sent each time slot in the frame.

本发明的一个有利实施方案涉及其中一个否定确认消息被错误地转换为一个肯定确认消息的情况。 An advantageous embodiment of the invention relates to a negative acknowledgment message which is erroneously converted into a case where a positive acknowledgment message.

在发送否定确认消息后,接收机将因此不接收以前错误接收的数据分组的预期重复,而是接收一个新的非预期数据分组的第一次传输。 After transmitting the acknowledgment message, it is expected that the receiver will not receive the previous data packet received in error is repeated, but receives the first transmission of a new non-expected data packet. 后者仍然被放到中间存储器中,所以不必提供这个非预期数据分组的重复传输。 The latter are still placed in intermediate storage, it is not necessary to provide this unexpected repeated transmission of data packets.

本发明的一个有利实施方案涉及其中一个肯定确认消息被错误地转换为一个否定确认消息的情况。 An advantageous embodiment of the invention relates to a positive acknowledgment message which is erroneously converted into a case where a negative acknowledgment message.

因此,在发送肯定确认消息后,接收机不接收新数据分组的预期的第一次传输,而是接收以前正确接收的数据分组的重复传输。 Thus, after sending a positive acknowledgment message, the intended receiver is not receiving a new data packet is a first transmission, but before reception repeatedly transmitted data packets correctly received. 因为这已经存在于接收机中,所以它被拒绝并且不放到存储器中。 Because it is already present in the receiver, it is rejected and not into the memory.

在本发明的一个有利实施方案中,提供了两个不同的重复消息。 In one advantageous embodiment of the invention, there are provided two different repeating message. 利用一个1比特编码可以区分第一个和第二个重复消息。 Using a 1-bit encoding can be distinguished from the first and second repeat message.

每当接收机在前一个传输周期中有误差地接收到一个数据分组,并且因此发送一个否定确认消息,但是发送机没有再次发送这个数据分组而是发送一个新的,也就是被接收机正确接收的非预期的数据分组时,该接收机都发送第一个重复消息。 A first receiver whenever there is an error in the transmission cycle a received data packet and thus transmits a negative acknowledgment message, but the sender does not send data packets of a new transmission but again, the receiver is correctly received when unintended data packet, the receiver sends the first repeat message. 因此,该接收机同时把一个对于该非预期的数据分组的肯定确认消息发送到发送机。 Thus, the receiver for a while to the non-expected data packet acknowledgment message is sent to the transmitter.

每当接收机在前一个传输周期中有误差地接收到一个数据分组,并且因此发送一个否定确认消息,但是发送机没有再次发送这个数据分组而是发送一个新的,也就是被接收机有误差地接收的非预期的数据分组时,该接收机都发送第二个重复消息。 A first receiver whenever there is an error in the transmission cycle a received data packet and thus transmits a negative acknowledgment message, but the sender does not send data packets of a new transmission but again, there is an error by the receiver non-expected data packet is received, the receiver sends a second repeat message. 因此,该接收机同时把一个对于该非预期的数据分组的否定确认消息发送到发送机。 Thus, while the receiver to a transmitter to send an acknowledgment message to the negative unintended data packet.

关于数据传输系统,利用包括一个发送机和一个接收机的数据传输系统以及用于在该发送机和该接收机之间传输数据分组的装置来到达实现本发明的目的,其中,该接收机被设计成为当一个数据分组被接收机无误差地接收时,发送一个肯定确认消息到该发送机,其中,该接收机被设计成为当一个数据分组被接收机有误差地接收时,发送一个否定确认消息到该发送机,其中,该接收机被设计成为如果尽管接收机发送了一个否定确认消息却仍没有发生相关数据分组的重复传输,则为了请求数据分组的重复传输,发送一个重复消息到该发送机,并且,其中,该发送机被设计成为无论何时发送机接收到一个否定确认消息或者一个重复消息,都进行数据分组的重复传输。 About data transmission system using the data transmission system comprising a transmitter and a receiver, and means for transmitting data packets between the transmitter and the receiver to implement the present invention reaches the object, wherein the receiver is when designed as a receiver of data packet is received without error, it transmits a positive acknowledgment message to the transmitter, wherein the receiver is designed to, when a data packet is received the receiver has an error, the transmitter a negative acknowledgment message to the transmitter, wherein the receiver is a receiver designed although if a negative acknowledgment message sent still not repeated transmission data packet occurs, the repeated transmission of data packets to the request, sending a message to the repeated transmitter, and wherein the transmitter is designed to be repeatedly transmitted whenever the transmitter receives a negative acknowledgment message or a repeated message, all data packets.

下面参考附图将更详细地说明本发明的一个实施方案,其中:图1用图解法显示在一个发送机和一个接收机之间第一个数据传输的时序,以及图2用图解法显示在该发送机和接收机之间第二个数据传输的时序。 Described in more detail below with reference to one embodiment of the present invention, wherein: Figure 1 diagrammatically shows the timing between a transmitter and a receiver of a data transmission, and FIG. 2 show diagrammatically in the second series of data transmission between the transmitter and receiver.

图1用图解法显示在发送机S和接收机E1之间数据传输的时序。 FIG 1 diagrammatically shows the timing of data transmission between a transmitter S and a receiver E1. 例如,发送机S例如可以是移动电话网的基站,并且接收机E1可以是这个移动电话网的移动站或终端。 For example, the sender S may be, for example, a mobile telephone network base station, and the receiver may be a mobile station or E1 terminal of the mobile telephone network. 一个类似于时间复用系统(TDMA:时分多址)的时间帧结构被提供用于在该发送机和接收机之间数据分组的传输。 A time multiplexed system is similar: for a transmission is provided between the transmitter and the receiver of the data packet (TDMA time division multiple access) time frame structure. 在时间帧结构内,四个连续的时隙,以及相应的四个信道,被提供用于在发送机S和接收机E1之间传输。 Within the time frame structure, four consecutive time slots, and the corresponding four channels, is provided for between a transmitter S and a receiver E1 transmission. 在每四个连续的时隙之后,跟随其后的一个时间段(time phase)被保留用于在发送机和另外的接收机E2、E3...,例如未显示的其它移动站之间的传输。 Between other mobile stations after each of four consecutive time slots, followed by a period of time thereafter (time phase) are reserved for the transmitter and the further receiver E2, E3 ..., not shown, e.g. transmission. 可以利用与被提供用于在发送机S和接收机E1之间传输的时间段相同的方式来使用这个时间段,并且,因此将不再进一步描述。 It may be provided for use and to use this period of time and at the same time the transmission between a transmitter S and a receiver E1 manner, and therefore will not be further described.

图1所示的数据传输包括包含时隙0、1、2和3的第一时间帧。 Data shown in Figure 1 comprises a transmission comprising a first time slot of the frame 1, 2 and 3. 时隙0到3中的每一个被保留用于相应的数据分组PDU0到PDU3(PDU:分组数据单元)的传输,也就是数据分组PDU0在时隙0中被发送,数据分组PDU1在时隙1中被发送,数据分组PDU2在时隙2中被发送,以及数据分组PDU3在时隙3中被发送。 Slots 0-3 in each of which is reserved for data packets corresponding to PDU0 PDU3: transmitting (PDU Packet Data Unit), i.e. the data packets are transmitted PDU0 in slot 0, slot 1 in the data packets PDU1 are transmitted, the data packets are transmitted PDU2 in slot 2, and the data packets are transmitted in time slot PDU3 3. 每个数据分组和一个1比特序号一起被发送。 Each data packet and a 1-bit sequence number is transmitted together. 这个1比特序号使接收机能够区别数据分组的第一次传输和数据分组的重复传输。 The 1-bit sequence number enables a receiver to distinguish the first transmission and repeated transmission of data packets of the packet data. 在本实施方案中,数据分组PDU0到PDU3每次与序号0结合被发送。 In the present embodiment, each data packet PDU0 binding to PDU3 number 0 is transmitted.

接收机E1测试是否输入的数据分组已被有误差或者无误差地接收。 Test whether a data packet receiver input E1 has been erroneous or error-free reception. 如果接收机E1已经无误差地接收了一个数据分组,则它发送一个肯定确认消息A到发送机S。 If the receiver has been received without error E1 of a data packet, it sends a positive acknowledgment message to the transmitter S. A 如果接收机已经有误差地接收了一个数据分组,则它发送一个否定确认消息N到发送机S。 If the receiver has received the error in a data packet, it sends a negative acknowledgment message to the transmitter S. N

在时间上移动的肯定和否定确认消息的发送以类似的方式也发生在未被显示的时隙中。 Time movement in the positive and negative acknowledgment message is transmitted in a similar manner also occurs in the time slot is not displayed. 至于数据分组和相关的肯定和否定确认消息的发送/接收,发送机和接收机以同步方式操作。 As data packets and associated positive and negative acknowledgment message transmission / reception, the transmitter and receiver operate in a synchronized manner.

时隙0、1、2和3的后面跟随被保留用于在发送机S和另外的接收机E2、E3、...之间数据传输的时间段20。 1, 2 and 3 of the rear slot follower is reserved for the transmitter and the further receiver S E2, E3, the data transmission between the period ... 20. 在这个时间段20期间,发送机S从接收机E1接收肯定或者否定确认消息。 During this time period 20, the transmitter S positive or negative acknowledgment message received from the receiver E1.

在本实施方案中,接收机E1已经有误差地接收了数据分组PDU0并且无误差地接收了数据分组PDU1到PDU3。 In the present embodiment, the receiver has an error E1 received data packet is received without errors and PDU0 data packets PDU1 to PDU3. 因此,接收机E1为数据分组PDU0发送一个否定确认消息N并且为数据分组PDU1到PDU3发送一个肯定确认消息A回到发送机S。 Thus, data packets E1 receiver sends a negative acknowledgment message PDU0 N data packets PDU1 and PDU3 to send a positive acknowledgment message back to the sender S. A 在否定确认消息N的传输中出现一个传输误差,它导致发送机S把接收机E1发送的否定确认消息N错误地解释为肯定确认消息A。 A transmission error occurs in the transmission of negative acknowledgment messages N, which results in a negative acknowledgment message to the transmitter receiver E1 S N transmission misinterpreted as a positive acknowledgment message A. 作为对数据分组PDU1到PDU3的答复而发送的肯定确认消息A被发送机S正确地接收。 A confirmation message is correctly received by the transmitter S as positive reply data packet PDU1 PDU3 being transmitted.

现在,发送机S假定全部数据分组PDU0到PDU3已经无误差地到达接收机E1。 Now, assume that the transmitter S PDU0 to all the data packets arrive without errors PDU3 has a receiver E1. 因此,在后续时隙4到7中,它发送新数据分组PDU4到PDU7到接收机E1。 Thus, in subsequent time slots 4-7, it sends to the new data packet PDU4 PDU7 to the receiver E1.

因为数据分组PDU4到PDU7是用于第一次发送的新数据分组,所以,发送机S改变随各自的数据分组发送的序号。 Because the data packet PDU4 to PDU7 is a new data packet is first transmitted, so the transmitter with the sequence number S to change the respective data packets transmitted. 因为在前面的传输阶段中,PDU0到3中的每一个和序号0一起被发送,所以现在数据分组PDU4到PDU7和序号1一起被发送到接收机E1。 Since transmission in the previous stage, in PDU0 is transmitted together to 3 and each number 0, so that now the data packet PDU4 PDU7 No. 1 and E1 are transmitted to the receiver together.

尽管如此,发送机S将数据分组PDU0到PDU3存储另一个传输周期,以便确保在错误解释肯定确认消息的情况下数据分组PDU0到PDU3的重复传输是可能的。 Nevertheless, the data packet transmitter S PDU0 PDU3 to store another transmission period, in order to ensure that the data packets PDU0 PDU3 in the case of a positive acknowledgment misinterpreted duplicate message transmission is possible. 该传输周期被理解为在数据分组的传输和肯定或否定确认消息或重复消息的接收之间的时间周期。 The transmission period is understood to be the time period between the reception confirmation message in the transmission of data packets and positive or negative or duplicate messages.

新数据分组PDU4到PDU7被接收机E1正确地接收。 PDU4 new data packet is received correctly to PDU7 receiver E1. 然而,因为在前面的传输周期中PDU0被错误地接收并且为响应它而发送了一个否定确认消息,所以,接收机E1期望数据分组PDU0的重复传输而不是数据分组PDU4的第一次传输。 However, since PDU0 received in error in the previous transmission period and transmits it in response to a negative acknowledgment message, therefore, desirable to repeat transmission the receiver E1 data packets PDU0 instead of the first transmission data packet PDU4 of. 因为在重复传输的情况下,数据分组PDU0将和序号0一起再次被发送,所以,接收机E1从序号1识别到数据分组PDU4是数据分组PDU4的第一次传输而不是数据分组PDU0的重复传输。 Because in the case of repeated transmission of data packets to be transmitted again with PDU0 number 0 and, therefore, the identification number from the receiver E1 1 to the data packet is a data packet PDU4 first transmission data packet PDU4 rather than repeating transmission PDU0 . 为请求数据分组PDU0的更新传输,接收机E1发送一个重复消息RA到发送机S。 A data packet transmission request PDU0 update, the receiver sends a duplicate E1 RA message to the transmitter S. 因为某个时刻数据分组PDU0是缺乏的,所以此刻被无误差地接收的数据分组PDU4到PDU7被接收机E1放到临时存储器中,以便能够以一个正确增加的不间断的顺序将数据分组提供到一个更高层。 Because the data packet PDU0 lacking certain time, so that the moment is received without error to the data packet PDU4 PDU7 place in a temporary memory in the receiver E1, to be able to correct a continuous increase of the order of the data packets to provide a higher level.

在数据传输系统中提供了两个不同的重复消息。 Providing two different repeating the message in a data transmission system. 第一个重复消息是一个用于非预期数据分组的肯定确认以及用于请求预期的数据分组的更新传输的信号RA(回复确认)。 First duplicate acknowledgment message is for a non-expected data packet and the RA signal for updating the data packet transmission requests expected (restoring confirmation). 第二个重复消息是一个用于非预期的数据分组的否定确认以及用于请求预期的数据分组的更新传输的信号RN(回复否定确认)。 The second message is repeated for a negative acknowledgment of data packets unintended signal RN and the transmission of data packets for updating request of the expected (negative acknowledgment replies).

在本例中,数据分组PDU4未被接收机E1预期,但是它被无误差地接收。 In the present embodiment, the data packet PDU4 receiver E1 is not expected, but it has been received without error. 因此,接收机E1响应接收的数据分组PDU4而发送信号RA,从而向发送机通知要求重复传输前面的数据分组PDU0,但是数据分组PDU4被有误差地接收。 Accordingly, the receiver transmits a signal E1 RA response data packet PDU4 received the notification request to the transmitter so that repeated transmission of the preceding data packet PDU0, but erroneous data packet PDU4 is received.

数据分组PDU5到PDU7被接收机E1无误差地接收,并且因此为了这些数据分组PDU5到PDU7,一个肯定确认消息A被发送到发送机S。 PDU5 data packets to the receiver E1 PDU7 is received without error, and therefore these data packets in order to PDU7 PDU5, a positive acknowledgment message is sent to a transmitter A S.

时隙4、5、6和7的后面跟随被保留用于在发送机S和另外的接收机E2、E3、...之间的数据传输的时间段21。 5, 6 and 7 of the rear slot follower is reserved for the transmitter and the further receiver S E2, E3, the data transmission period between 21 .... 在这个时间段21内,发送机S从接收机E1接收一个对于数据分组PDU5到7的肯定确认消息A和用于数据分组PDU0到PDU4的重复消息RA。 During this time period 21, the transmitter for a data packet received S PDU5 affirmative acknowledgment message to A 7, and a data packet PDU4 to RA PDU0 duplicate message from the receiver E1.

现在,发送机S假定数据分组PDU4到PDU7全部已经无误差地到达接收机E1,并且数据分组PDU0已经有误差地到达并且应被再次发送。 Now, assume that the data packet transmitter S PDU7 PDU4 to reach the receiver without errors have all E1, and the data packet has errors PDU0 reach and should be sent again. 因此,在后续时隙0中,发送机首先再次发送PDU0,并且在后续时隙8、9和10中发送新数据分组PDU8到PDU10到接收机E1。 Thus, in the subsequent time slot 0, the transmitter first sends PDU0 again, and new data is transmitted in the subsequent time slots 8, 9 and 10 to PDU10 PDU8 packets to the receiver E1.

因为PDU0的第一次传输同样有序号0,所以数据分组PDU0的重复传输和序号0一起被进行。 Since the first transmission PDU0 also have a serial number 0, the data packet transmission repetition PDU0 0 and sequence number are performed together.

因为数据分组PDU8到PDU10是用于第一次发送的新数据分组,所以发送机S改变随数据分组发送的序号。 Because the data packets to PDU10 PDU8 is a first transmission of new data packet, the transmitter with the sequence number S to change the transmitted data packet. 因为在前面的传输阶段中PDU4到7中的每一个和序号1一起被发送,所以,现在数据分组PDU8到PDU10和序号0一起被发送到接收机E1。 Because PDU4 to 7 in each of No. 1 and are transmitted together in the preceding stage of the transmission, so that now the data packet and the sequence number 0 PDU8 PDU10 to be transmitted to the receiver E1 together.

为了发送机S错误地解释对于PDU5到7的肯定确认消息或者在这些肯定确认消息的传输中出现传输误差的偶然性,发送机S将数据分组PDU5到PDU7存储另一个传输周期。 To transmitter incorrectly interprets S PDU5 to 7 for a positive acknowledgment message or accidental transmission error occurs in the transmission of the acknowledgment message, the transmitter S to the data packets PDU5 PDU7 store another transmission period. 因此,如果在下一个传输周期中发送机从接收机E1接收一个重复消息,则它能够完成这些PDU5到7的重复传输。 Thus, if the next transmission cycle is repeated a message transmitter receives from the receiver E1, it is possible to complete these PDU5 7 repeat transmission.

此后,在发送机S和接收机E1之间的数据传输以相同的方式周期性地继续。 Thereafter, data transmission between a transmitter S and a receiver in the same manner as E1 is periodically continued.

图2用图解法显示在发送机S和接收机E1之间数据传输的时序。 Figure 2 diagrammatically shows the timing of data transmission between a transmitter S and a receiver E1. 该数据传输很大程度上与图1的数据传输相似,这就是图2只显示保留用于在发送机S和接收机E1之间传输的时间帧的各自的第一时隙0、4、0和4的数据传输的原因。 Data transmission of the data transmission is largely similar to FIG. 1, FIG. 2 which is reserved for displaying respective first time slot transmission between a transmitter S and a receiver E1 frames 0,4,0 4 and causes the data transmission. 下面将阐明与图1的数据传输图的区别。 The following will illustrate the difference between the data transmission of FIG. 1. 在图2的数据传输中,接收机E1没有预期在数据分组PDU4的第一次传输中出现误差,也就是,接收机E1有误差地接收数据分组PDU4。 In the data transmission of FIG. 2, the receiver is not expected E1 data packet PDU4 an error occurs in the first transmission, i.e., a receiver E1 receives erroneous data packet PDU4. 因此,接收机E1为错误接收的数据分组PDU4发送重复消息RN,向发送机通知要求重复传输前面的数据分组PDU0,以及数据分组PDU4被有误差地接收,因此也要求重复传输数据分组PDU4。 Thus, a receiver E1 receives a data packet PDU4 error message is transmitted repeating the RN, repeat the notification request to the transmitter transmitting data packets preceding PDU0, and erroneous data packet PDU4 is received, therefore, requires repeated transmission data packet PDU4.

因此,在下一个传输周期中,以及在数据分组PDU4重复传输之后的传输周期中,发生数据分组PDU0的重复传输。 Thus, in the next transmission period, and in the transmission cycle after the repeated transmission of a data packet PDU4, the repeated transmission of data packets PDU0 occurs.

因为更高程度的误差保护将总是涉及增加被发送的数据量(附加的冗余度),所以,当在上行链路中被发送的四个命令ACK、NACK、回复Cmd或回复NACK被提供一个考虑要在实际情况中发送这些命令的频率的误差保护时,上述误差消除过程随后带来HS-DSCH上的吞吐量显著改善。 Because of the higher degree of error protection will always be directed to increase the amount of data to be transmitted (with redundancy), so that, when four commands are transmitted in the uplink the ACK, NACK, NACK reply or replies to be provided Cmd when considering a frequency error protection of these commands to be transmitted in reality, the error removal process is then brought on the HS-DSCH throughput is significantly improved. 因此,经常被发送的命令(ACK和NACK)应该以较低的冗余度,并且因此以比很少被发送的命令(回复Cmd、回复NACK)更低的误差保护被发送,因为后者只对于误差消除情况是必要的。 Thus, the command (ACK and NACK) to be transmitted is often a lower degree of redundancy, and therefore less than the command to be transmitted (Cmd reply, reply NACK) is transmitted less error protection, because the latter only for the elimination of error conditions are necessary. 随后,可以达到吞吐量的最优化,这是因为用于保护ACK和NACK的传输的冗余度被下降(lay down),这样以致一方面,在不利的信道条件下也将很少出现(例如,所有情况中的1%)错误地把ACK解释为NACK或把NACK解释为ACK,同时在另一方面,在不是十分不利的信道条件下,被发送的冗余度基本上不比必需的高,使得在上行链路中不增加由传输到一个不必要的高等级所引起的干扰。 Subsequently, optimized throughput, because the degree of redundancy to protect the transmission of ACK and NACK is lowered (lay down), so that on the one hand, under adverse channel conditions will rarely occurs (e.g. , 1% in all cases) incorrectly interpreted as an ACK to NACK or NACK to ACK interpretation, while on the other hand, not under very unfavorable channel conditions, redundancy is transmitted substantially higher than necessary, such that the interference is not increased by the transmission to an unnecessarily high level due to the uplink. 然而,如果不利的信道条件短时间出现,则仍然导致一个错误解释,误差消除过程将干预,因为不管连续的不利的信道条件的增加的冗余度,所以随后这个过程将不错误地解释回复命令。 However, if the adverse channel conditions appears briefly, then still lead to a false interpretation, error elimination process will intervene because of the increased regardless of the continuous adverse channel conditions redundancy, so then the process will not incorrectly interpret reply command .

此外,增强的回复Cmd和回复NACK误差保护考虑到把回复Cmd错误地解释为回复NACK,反之亦然,或者把回复Cmd解释为ACK/NACK或把回复NACK解释为ACK/NACK,并且反之亦然的事实,应该只以很低的剩余概率出现,因为,否则误差消除过程的执行将导致没有这个过程将不存在的新误差情况。 In addition, the enhanced responses and responses Cmd NACK error protection into consideration the reply Cmd reply incorrectly interpreted as NACK, or vice versa, or the reply Cmd interpreted as ACK / NACK or NACK replies to be interpreted as ACK / NACK, and vice versa the fact that, should only very low remaining probability, because, otherwise errors will result in the elimination process without this process there will be no new error situation.

目前在3GPP TSG-RAN-WG1和WG2中主张被用于每个数据块(其持续时间是固定的,并且表示为传输时间间隔TTI)的ACK或NACK是根据是否移动站能够还是不能够成功解码数据块而被发送的,所述数据块在DL中通过与移动站有关的上行链路DPCCH-2(扩展因子256)上的HS-DSCH被发送。 Currently advocated in 3GPP TSG-RAN-WG1 and WG2 is used for each data block (whose duration is fixed, and represents a transmission time interval TTI) ACK or NACK based on whether the mobile station can or can not successfully decode data blocks being transmitted in the DL in the data block associated with the mobile station through the uplink DPCCH-2 (spreading factor 256) HS-DSCH is sent on. 根据目前主要的观点,这些数据块的TTI通常延续3个时隙(1无线电帧有15个时隙)。 The main point of view, TTI these blocks generally extends three slots (one radio frame has 15 slots). 随后将同样每3个时隙在上行链路中发生的确认,有可利用的10(重复)编码比特,也就是,通过无线电接口,一个ACK将被利用数值1的10(重复-编码)比特发送,而一个NACK被利用数值-1的10(重复-编码)比特被发送。 Similarly subsequently occurs every three slots in the uplink acknowledgment, there is (repeat) 10 coded bits available, i.e., over the radio interface, is a numerical ACK 101 (repeated - coded) bits transmission, while a value of 10 is utilized NACK -1 (repeat - coded) bits are transmitted. 这些10编码比特随后被附加地扩展。 These 10 code bits are then additionally extended. 根据信道条件,这导致大约1%的错误解释概率。 Depending on channel conditions, which resulted in approximately a 1% probability of misinterpretation. 在DPCCH-2上的其它比特被用于其它目的,例如,用于传输表征信道质量等级的测量值。 Other bits in the DPCCH-2 is used for other purposes, e.g., for measuring the value of the transmission channel characterization quality levels.

在DPCCH上扩展因子是固定的,也就是,它不能动态地从一个无线电帧转变到下一个或者从一个TTI或者甚至从一个时隙转变到下一个。 Spreading factor on the DPCCH is fixed, i.e., it can not be dynamically changed from one radio frame to the next, or from one time slot or even transition from one TTI to the next. 因此,不可能减小DPCCH-2扩展因子(例如平分它),这样以致现在依靠在TTI中出现错误地把NACK解释为ACK(这是在最不利的形势中的情况,而把ACK错误地解释为NACK被认为较不重要),而发送一个明显改进的误差-校正编码回复命令(以两倍可能的数据量),其中,随后回复命令(Revert-Cmd或Revert-NACK)之一将必须被发送。 Thus, it is impossible to reduce the DPCCH-2 spreading factor (e.g. bisects it), so that now rely appear in the TTI wrongly interpreted as a NACK ACK (which is the case in the most unfavorable situations, and the ACK erroneously interpreted NACK is considered as less important), and transmits a significantly improved error - correcting coding reply command (at twice the amount of data possible), wherein, subsequently reply command (Revert-Cmd or Revert-NACK) one would have to be send.

利用信道扩展的误差校正改进为了在其中在基站中一个NACK被曲解为ACK的少有的情况中实现回复命令传输的纠错改进,移动站可以接通(switch on)一个附加的以前定义的扩频码(例如,扩展因子也是256),在它上面,这个附加的冗余度在上行链路上能被并行发送(可替代地:通过HS-DSCH,从开始数据接收分配扩频码,但是附加的冗余度只在必要时被发送)。 Using the channel extension for improved error correction in which a NACK is misunderstood as an ACK rare case where error correction is implemented to improve the base station in reply to the command transmission, the mobile station may be turned on (switch on) an additional expansion of the previously defined frequency code (e.g., spreading factor is 256), above it, this additional redundancy in parallel can be transmitted on the uplink (alternatively: by HS-DSCH, reception spread code allocated from the start of data, but additional redundancy is sent only when necessary). 例如,在DPCCH-2上的一个Revert-Cmd(这里使用的位序列不因此而改变)的情况下,移动站能够发送一个ACK,以及在附加的扩频码上明显改进的误差-校正编码序列,其表示协同ACK在DPCCH-2上的一个Revert-Cmd。 For example, in a case where the DPCCH-2 Revert-Cmd (bit sequence used herein therefore does not change), and a mobile station can transmit the ACK, and the additional spreading code in a significantly improved error - correcting coding sequence , which indicates a synergistic ACK Revert-Cmd on the DPCCH-2. 在Revert-NACK命令的情况下,移动站还可以在DPCCH-2上发送一个NACK,以及另外在附加的扩频码上明显改进的误差-校正编码位序列,其表示协同NACK在DPCCH-2上的一个Revert-NACK。 In the case where the command Revert-NACK, the mobile station may also transmit a NACK on DPCCH-2, and further on the additional spreading code in a significantly improved error - correcting coding bit sequence, indicating a synergistic NACK on DPCCH-2 a Revert-NACK. 基站根据在DPCCH-2上以及在附加提供的扩频码上接收的数据的恰当组合来确定哪一个命令被发送。 The base station to determine which command is transmitted in accordance with the right combination on DPCCH-2 and the spreading code received at the additional data supplied.

依靠可以在移动站中应用的扩频码,基站必定总是并行地解扩DPCCH-2的扩频码以及增加的扩频码,以便识别是否存在一个ACK/NACK或回复命令之一。 Rely spreading codes may be applied in a mobile station, the base station must always parallel despread DPCCH-2 and increased spreading code spreading code to identify whether there is a ACK / NACK one command or reply. 然而,这不是一个很复杂的附加的过程。 However, this is not a very complicated additional process. 在此将不再研究附加的扩展因子上的数据编码的细节。 The details of the study will not be encoded on additional data spreading factor.

在UMTS上行链路中增加另一个扩频码不是严重的问题(不象在下行链路中,全部移动站必须共用现存的码树)。 Adding another spreading code not a serious problem in the UMTS uplink (unlike in the downlink, all mobile stations must share the existing code tree). 增加这个扩频码仅仅导致在移动站中功率放大器的线性上必须强加略微高一些的要求。 This results in only increasing the spread code in the mobile station to be slightly higher requirements imposed on the number of linear power amplifier.

无误差消除过程的ARQ协议技术应用在没有上述误差消除过程的情况下,所述技术同样能只被用于传输NACK:每当移动站必须发送一个NACK时,它就将在另一个特别为此接通的扩频码上随附加的冗余度发送这个命令。 Application ARQ protocol without error cancellation process in the absence of the error cancellation process conditions, the same technique can only be used for transmission NACK: Whenever the mobile station must send a NACK, it will be another special this purpose It is turned on spreading codes sent this command with additional redundancy. 这将大大降低错误地把NACK解释为ACK的频率,所以,把NACK曲解为ACK的错误情况将很少出现,并且误差消息过程将不再是必须的。 This will significantly reduce the NACK incorrectly interpreted as an ACK frequency, therefore, the NACK misinterpreted as an ACK error will rarely occurs, the error message and the process will no longer be necessary. 然而,这种解决办法的一个缺点是,为了避免任何曲解,可以预期NACK必须被比较频繁地发送,并且在并非不利的信道条件下,附加发送的冗余度根本没有必要。 However, a disadvantage of this solution is that, in order to avoid any misunderstanding, NACK can be expected to be sent more frequently, and not under adverse channel conditions, additional redundancy is sent there is no need. 然而,在这些条件下,在上行链路中将产生比必要的更多的干扰。 However, under these conditions, generating more interference than necessary in the uplink. 这里,仅仅增加NACK的传输功率以便以这种方式实现改进探测判定的可靠性大概是更有利的。 Here, only the NACK transmission power increase in order to achieve in this way improve the reliability of detection deciding probably more advantageous.

Claims (10)

1.一种在发送机(S)和接收机(E1)之间传输数据分组的方法,其中,该接收机(E1)被设计成为当数据分组(PDU)被无误差地接收时,发送一个肯定确认消息(A)到发送机(S),其中,该接收机(E1)被设计成为当数据分组(PDU)被有误差地接收时,发送一个否定确认消息(N)到发送机(S),其中,接收机(E1)被设计成为如果尽管由接收机(E1)发送了一个否定确认消息(N)却仍没有发生相关数据分组的重复传输,则为了请求数据分组(PDU)的重复传输而发送一个重复消息(RA)到发送机(S),并且,其中,发送机(S)被设计成为每当发送机(S)接收到一个否定确认消息(N)或者一个重复消息(RA)时,就进行数据分组(PDU)的重复传输,其中发送机(S)发送的数据分组(PDU)有一个用于区别重复传输和第一次传输的1比特序号(SN0,SN1),在一收到从接收机(E1)来的肯定确认消息(A)的情况下,该序号就由发送机(S 1. A method between a transmitter (S) and a receiver (E1) transmitting a data packet, wherein the receiver (E1) is designed as a data packet (PDU) is received without error, a transmission acknowledgment message (a) to the transmitter (S), wherein the receiver (E1) is designed as a data packet (PDU) is received has an error, the transmitter a negative acknowledgment message (N) to the transmitter (S ), wherein the receiver (E1) is designed to be sent by the receiver although if (E1) of a negative acknowledgment message (N) still repeated transmission of data packets does not occur, in order to request data packets (PDU) repeating repeated transmission transmits a message (RA) to the transmitter (S), and wherein the transmitter (S) is designed as a transmitter (S) is received every time a negative acknowledgment message (N) or a repeated message (RA ), the transmission of data packets to be repeated (PDU), the data packet (PDU) wherein the transmitter (S) for distinguishing between a transmission and a repeat transmission of the first transmission bit number (SN0, SN1), in a case where the receipt of a positive acknowledgment message from the receiver (E1) (a), which number would by the transmitter (S )交替地加以改变,以指示新数据被发送。 ) To be alternately changed to indicate that the new data is transmitted.
2.如权利要求1中所述的方法,其特征在于发送机(S)把已为其接收到一个肯定确认消息的那些数据分组放置到临时存储器中另一个传输周期,其中一个传输周期是数据分组的发送和肯定(A)或否定确认消息(N)或重复消息(RA)的接收之间的时间周期。 2. A method as recited in claim 1, characterized in that the transmitter (S) has a positive acknowledgment that the packet data messages into a temporary memory for receiving another transmission cycle, wherein a data transmission period is and affirmation packet transmission (a) or a negative acknowledgment message (N) or the repeating time period between receiving a message (RA) is.
3.如权利要求1中所述的方法,其特征在于接收机(E1)发送的肯定和否定确认消息(A,N)包括所述序号(SN0,SN1)以便区别重复传输和第一次传输。 3. The method according to claim 1, characterized in that the positive and negative receivers (E1) transmits an acknowledgment message (A, N) including the sequence number (SN0, SN1) to the difference between the first transmission and the repeat transmission .
4.如权利要求1中所述的方法,其特征在于提供了一个有N个时隙的周期性重复时间帧,其中,一个时间帧的所述时隙的各时隙被保留用于一个数据分组的传输。 4. The method according to claim 1, characterized in that it provides a periodically repeating N time slots of a time frame, wherein each slot of said time slot is reserved for a frame of data transmission of packets.
5.如权利要求1中所述的方法,其特征在于,在发送一个否定确认消息(N)并且随后接收一个非预期的数据分组之后,接收机(E1)仍然把后者放到临时存储器中。 5. The method according to claim 1, wherein, in the transmission then receives a negative acknowledgment message (N) and then a non-expected data packet, the receiver (E1) which remains into the temporary memory .
6.如权利要求1中所述的方法,其特征在于,在发送一个肯定确认消息(A)并且随后接收一个非预期的数据分组之后,接收机不把后者放到临时存储器中。 6. The method according to claim 1, characterized in that the acknowledgment message (A) and then transmitting an unexpected after receiving a data packet, the receiver does not put the latter into the temporary memory.
7.如权利要求1中所述的方法,其特征在于,接收机(E1)被设计成为为了请求一个数据分组的重复传输并且为了肯定地确认一个非预期的数据分组而发送一个第一重复消息;并且,接收机(E1)被设计成为为了请求一个数据分组的重复传输并且为了否定地确认一个非预期的数据分组而发送一个第二重复消息。 7. A method as claimed in claim 1, characterized in that the receiver (E1) is designed as a request for a repeat transmission of data packets and to a non-positively acknowledges data packets expected to send a first message repeat ; and, a receiver (E1) is designed as a request for a repeat transmission of data packets and for a negatively acknowledged data packets unintended transmits a second repeat message.
8.一种数据传输系统,包括一个发送机(S)和一个接收机(E1)以及用于在该发送机(S)和接收机(E1)之间传输数据分组(PDU)的装置,其中,该接收机(E1)被设计成为当数据分组(PDU)被无误差地接收时,发送一个肯定确认消息(A)到发送机(S),其中,该接收机(E1)被设计成为当数据分组(PDU)被有误差地接收时,发送一个否定确认消息(N)到发送机(S),其中,该接收机(E1)被设计成为如果尽管由接收机(E1)发送了一个否定确认消息(N)却仍没有发生相关数据分组的重复传输,则为了请求数据分组(PDU)的重复传输而发送一个重复消息(RA)到发送机(S),并且,该发送机(S)被设计成为每当发送机(S)接收到一个否定确认消息(N)或者一个重复消息(RA)时,就进行数据分组的重复传输,其中发送机(S)发送的数据分组(PDU)有一个用于区别重复传输和第一次传输的1比特序号(SN0,SN1),在一收到从 A data transmission system comprising a transmitter (S) and a receiver (E1) and means for transmitting data packets between the transmitter (S) and a receiver (E1) (PDUs), wherein the receiver (E1) is designed as a data packet (PDU) was received without error when transmitting a positive acknowledgment message (a) to the transmitter (S), wherein the receiver (E1) is designed as data packet (PDU) is received has an error, the transmitter a negative acknowledgment message (N) to the transmitter (S), wherein the receiver (E1) is designed to be sent by the receiver despite If (E1) a negative an acknowledgment message (N) still not repeated transmission data packet occurs, in order to request data packets (PDU) of the repeated transmission transmits a duplicate message (RA) to the transmitter (S), and the transmitter (S) when the machine is designed to be transmitted (S) is received whenever a negative acknowledgment message (N) or a repeated message (RA), it repeats the transmission of data packets, wherein the data packet transmitter (S) sent (PDU) with a for a 1-bit difference and the repeated transmission number (SN0, SN1) of the first transmission, a receipt from 收机(E1)来的肯定确认消息(A)的情况下,该序号就由发送机(S)交替地加以改变,以指示新数据被发送。 Receiver (E1) to the case of a positive acknowledgment message (A), which number would be altered by the transmitter (S) alternately to indicate that the new data is transmitted.
9.一种发送数据分组到接收机(E1)的发送机(S),其中,该发送机(S)被设计成为每当发送机(S)从接收机(E1)接收了一个否定确认消息(N)或一个重复消息(RA)时,就进行一个数据分组(PDU)的重复传输,其中发送机(S)发送的数据分组(PDU)有一个用于区别重复传输和第一次传输的1比特序号(SN0,SN1),在一收到从接收机(E1)来的肯定确认消息(A)的情况下,该序号就由发送机(S)交替地加以改变,以指示新数据被发送。 A data packet transmitted to the receiver (E1) of the transmitter (S), wherein the transmitter (S) is designed as an acknowledgment message sender (S) is received from the receiver (E1) whenever a negative when (N) or a repeated message (RA), performed on a data packet (PDU) of repeat transmission, wherein the data packet (PDU) transmitting unit (S) for distinguishing between a transmitted and repeated transmission of the first transmission 1-bit sequence number (SN0, SN1), in the case where the positive acknowledgment message from the receiver (E1) (a) of a received, the number would be by the transmitter (S) is alternately changed to indicate that the new data is send.
10.一种从一个发送机(S)接收数据分组(PDU)的接收机(E1),其中,该接收机(E1)被设计成为当数据分组(PDU)被无误差地接收时,发送一个肯定确认消息(A)到发送机(S),其中,该接收机(E1)被设计成为当数据分组被有误差地接收时,发送一个否定确认消息(N)到发送机(S),其中,该接收机(E1)被设计成为如果尽管由接收机(E1)发送了一个否定确认消息(N)却仍没有发生相关数据分组的重复传输,则为了请求数据分组的重复传输而发送一个重复消息(RA)到发送机(S),其中从发送机(S)接收的数据分组(PDU)有一个用于区别重复传输和第一次传输的1比特序号(SN0,SN1),在一收到从接收机(E1)来的肯定确认消息(A)的情况下,该序号就由发送机(S)交替地加以改变,以指示新数据被发送。 10. A receiver (E1) receiving a data packet from a transmitter (S) (PDU), wherein the receiver (E1) is designed as a data packet (PDU) was received without error, a transmission acknowledgment message (a) to the transmitter (S), wherein the receiver (E1) is designed as a data packet is received when there is an error, the transmitter a negative acknowledgment message (N) to the transmitter (S), wherein the receiver (E1) is designed to be sent by the receiver although if (E1) of a negative acknowledgment message (N) still repeated transmission of data packets does not occur, to request a repeat transmission of a packet data transmission is repeated message (RA) to the transmitter (S), wherein the transmitter (S) the data packet (PDU) for a difference between the received transmission and a repeat first transmission bit number (SN0, SN1), in a close the case where the acknowledgment message (a) from the receiver (E1), which number would be altered by the transmitter (S) alternately to indicate that the new data is transmitted.
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