CN102055571B - Transmission method of data packets, communication equipment and communication system - Google Patents

Transmission method of data packets, communication equipment and communication system Download PDF

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CN102055571B
CN102055571B CN 200910211250 CN200910211250A CN102055571B CN 102055571 B CN102055571 B CN 102055571B CN 200910211250 CN200910211250 CN 200910211250 CN 200910211250 A CN200910211250 A CN 200910211250A CN 102055571 B CN102055571 B CN 102055571B
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window
length
scheduling
current
window length
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CN102055571A (en
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张锦芳
梁文亮
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华为技术有限公司
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Abstract

本发明公开了一种数据包的传输方法、通信设备和通信系统。 The present invention discloses a method for transmitting data packets, a communication apparatus and communication system. 本发明实施例采用根据等待发送的数据包数和上一次收到的反馈信息来调整当前调度窗口长度,然后根据调整后的调度窗口长度进行数据包的传输,使得调度窗口长度可以随着无线信道质量的变化而改变,即在无线信道质量好的时候,增大调度窗口长度以节省无线资源,在无线信道质量差的时候,减小调度窗口长度以避免一组数据包的反复重传,减小传输时延,从而实现了有效利用无线资源的目的。 Example employed to adjust the current dispatch window length, then the length of the data packet according to the scheduling window in accordance with the adjusted transmission of packets waiting to be sent and the number of the last received feedback information, such as the radio channel scheduling window length of the present invention may be change in the mass change, i.e. the radio channel quality is good, the scheduler increases the length of the window in order to save radio resources when the difference between the radio channel quality, reducing the window size to avoid scheduling a set of data packets retransmitted repeatedly, Save small transmission delay, thereby achieving the purpose of efficient use of radio resources.

Description

一种数据包的传输方法、通信设备和通信系统 A data packet transmission method, communication apparatus and communication system

技术领域 FIELD

[0001] 本发明涉及通信技术领域,具体涉及一种数据包的传输方法、通信设备和通信系统。 [0001] The present invention relates to communication technologies, and particularly relates to a data packet transmission method, communication apparatus and communication system.

背景技术 Background technique

[0002] 混合自动重传请求(HARQ, Hybrid automatic repeat request)米用基于前向纠错(FEC, Forward Error Correction)和自动重传请求(ARQ, AutomaticRepeat Request)的差错控制方法来降低系统的误码率以确保服务质量。 [0002] Hybrid Automatic Repeat Request (HARQ, Hybrid automatic repeat request) error control method based on m using a forward error correction (FEC, Forward Error Correction) and automatic repeat request (ARQ, AutomaticRepeat Request) system to reduce the error rate in order to ensure quality of service.

[0003] 常用的HARQ协议包括停等式,后退N步式和选择重发式等。 [0003] HARQ protocol comprises a common stop equation, N - step back and Selective Repeat type. 在这三种协议中,每个数据包都需要一次确认消息(ACK, Acknowledgement)或不确认消息(NACK, Negativeacknowledgement)反馈,为了节省无线资源,现有技术提出通过用一个ACK或NACK来反馈多个数据包的方案。 In these three protocols, each packet needs a acknowledgment message (ACK, Acknowledgment) or non-acknowledgment message (NACK, Negativeacknowledgement) feedback, in order to save radio resources, the prior art proposed using a feedback ACK or NACK multiple program data packets.

[0004] 例如,在现有技术的长期演进时分双工(LTE TDD, Long Term EvolutionTimeDivision Duplex)系统中,调度窗口长度可以为1,2,3或4个子帧,即可以是I个、2个、3个或4个子帧中的数据包对应着一个ACK或NACK反馈,其中,一个或多个子帧中的数据包对应的ACK或NACK信息可以通过绑定(bundling)或复用(multiplexing)的方式来进行发送,在ACK或NACK绑定中,多个子帧对应的ACK或NACK反馈通过逻辑与运算形成I位(bit)大小的ACK或NACK信息进行传输;在ACK或NACK复用中,一个ACK或NACK反馈包含N或2N个位(bits)大小的信息,其中N为在一个调度窗口中的子帧数。 [0004] For example, in a long term evolution time division duplex prior art (LTE TDD, Long Term EvolutionTimeDivision Duplex) system, the scheduling window length can be 2, 3 or 4 subframes, i.e., may be I, 2 , packet 3 or 4 subframes corresponding to an ACK or NACK feedback, wherein the one or more ACK or NACK information packet corresponding subframes by binding (bundling) or multiplexed (multiplexing) of transmitting manner, in ACK or NACK bundling, a plurality of sub-frames corresponding to the ACK or NACK feedback transmitted ACK or NACK information form I bit (bit) by the size of the logical aND operation; in ACK or NACK multiplexing, a ACK or NACK feedback information comprising N or 2N bits (bits) size, where N is the number of subframes in a dispatch window. 上下行数据包的ACK或NACK的反馈时间固定,并且由不同的TDD上下行配比决定。 ACK or NACK feedback time of the downlink packet is fixed, and different TDD uplink and downlink ratio determined.

[0005] 在对现有技术的研究和实践过程中,本发明的发明人发现,现有技术中的调度窗口大小都是固定或指定的,ACK/NACK反馈每个数据包或一个ACK或NACK通过绑定或复用的方式反馈调度窗口中的一组数据包,无论是前者还是后者,都不考虑无线信道质量的好坏对数据包反馈重传的影响,这也就导致一个问题:如果采用前一个方案,那么在无线信道质量好的时候,由于数据包传输成功率很高,所以此时如果要求每个数据包都需要一次ACK或NACK反馈的话,就会对无线资源造成浪费,而如果采用后一个方案,那么,在信道质量差的时候,由于数据包传输错误率很高,所以此时如果再让一个ACK或NACK反馈多个数据包的话,有可能会造成一组数据包的反复重传,从而引起传输时延增加,也就是说,现有技术无法有效地利用无线资源。 [0005] In the research and practice of the prior art, the present inventors found that the prior art scheduling window size is fixed or specified, ACK / NACK feedback of each data packet or an ACK or NACK by way bind or multiplexed feedback scheduling a group of packets window, whether it is the former or the latter, does not consider the impact of the radio channel quality is good or bad feedback packet retransmission, which also leads to a question: If the previous scheme, the radio channel quality is good, because of the high success rate of packet transmission, so in this case if the requirements of each packet requires one ACK or NACK feedback, it would result in a waste of radio resources, If after using a program, then, when the channel quality is bad, since the data packet transmission error rate is high, so in this case if an ACK or NACK feedback let more packets, it may cause a group of data packets repeated retransmission, resulting in increased transmission latency, i.e., the prior art can not effectively use radio resources.

发明内容 SUMMARY

[0006] 本发明实施例提供一种数据包的传输方法、通信设备和通信系统,使得调度窗口长度可以随着无线信道质量的变化而自适应调整,达到有效利用无线资源的目的。 [0006] Example embodiments provide a method for transmitting data packets according to the present invention, a communication device and a communication system, such as the scheduling window length may change the radio channel quality is adaptively adjusted to achieve the purpose of effective use of radio resources.

[0007] 一种数据包的传输方法,包括: Transmission method [0007] A data packet, comprising:

[0008] 根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度;[0009] 根据调整后的调度窗口长度进行数据包的传输。 [0008] The number of packets waiting to be sent and received feedback information on a window length adjusted according to the current schedule, wherein the schedule window is equal to a length greater than the minimum unit of scheduling window length and less than equal to the maximum length of schedule window; [0009] The scheduling the adjustment window length transport packets.

[0010] 一种通信设备,包括: [0010] A communication apparatus, comprising:

[0011] 调整单元,用于根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度; [0011] adjustment means for the current scheduling window length packets waiting to be sent and the number of the last received feedback adjustment, wherein, the scheduling window size larger than the minimum unit of length equal to a dispatch window dispatch window and not more than the maximum length ;

[0012] 传输单元,用于根据调整单元调整后的调度窗口长度进行数据包的传输。 [0012] transmitting unit, for transmitting data packets according to the scheduling window adjusting unit adjusts the length.

[0013] 一种通信系统,包括: [0013] A communication system, comprising:

[0014] 发送端通信设备,用于根据等待发送的数据包数和上一次收到的接收端通信设备发送的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度,根据调整后的调度窗口长度将数据包发送给接收端通信设备; [0014] transmitting end of a communication device, for adjusting the current scheduling window length according to the number of packets waiting for feedback information transmission apparatus and the reception side transmits a communication received last time, wherein the scheduling window size greater than a minimum length equal to a scheduling window units and less than equal to the maximum length of the scheduling window, the window length according to the scheduling transmits the adjusted data packet to the reception side communication device;

[0015] 接收端通信设备,用于接收发送端通信设备发送的数据包,并发送反馈消息给发送端通信设备。 [0015] The reception side communication device for receiving data packets transmitted from the transmission side communication apparatus, and sends an acknowledgment message to the transmission side communication apparatus.

[0016] 本发明实施例采用根据等待发送的数据包数和上一次收到的反馈信息来调整当前调度窗口长度,然后根据调整后的调度窗口长度进行数据包的传输,使得调度窗口长度可以随着无线信道质量的变化而改变,即在无线信道质量好的时候,增大调度窗口长度以节省无线资源,在无线信道质量差的时候,减小调度窗口长度以避免一组数据包的反复重传,减小传输时延,从而实现了有效利用无线资源的目的。 [0016] Example embodiments of the present invention uses the feedback information according to the number of packets waiting to be sent and received last time to adjust the current schedule window length, then the data packet transmission according to the scheduling window length adjusted, so that the scheduler window length can vary change the radio channel quality is changed, i.e. the radio channel quality is good, the scheduler increases the length of the window in order to save radio resources when the difference between the radio channel quality, reducing the window size to avoid scheduling a group of data packets is repeated weight transmission, transmission delay is reduced, thereby achieving efficient use of radio resources purposes.

附图说明 BRIEF DESCRIPTION

[0017] 为了更清楚地说明本发明实施例中的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。 [0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings are briefly introduced as required for use in the embodiments describing the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention. embodiment, those of ordinary skill in the art is concerned, without creative efforts, can derive from these drawings other drawings.

[0018] 图1是本发明实施例一所提供的方法的流程图; [0018] FIG. 1 is a flowchart of a method provided in an embodiment of the present invention;

[0019] 图2是本发明实施例所提供的方法中调度窗口长度的调整示意图; [0019] FIG. 2 is a schematic view of the adjustment of the window length scheduling method provided in the embodiment of the present invention;

[0020] 图3是本发明实施例所提供的方法中出错调度窗口内的数据包全部重传时调度窗口长度的调整示意图; [0020] FIG. 3 is a schematic view of the data packets in the method provided in the error window schedule adjustment window length of all scheduled retransmission embodiment of the present invention;

[0021] 图4是本发明实施例所提供的方法中出错调度窗口内出错数据包之后的数据包全部重传时上行调度窗口长度的调整示意图; [0021] FIG. 4 is a data packet after the packet error method provided in the embodiment of the present invention, the error window scheduling all uplink scheduling a schematic diagram of adjusting the retransmission window length;

[0022] 图5是本发明实施例所提供的方法中出错调度窗口内出错数据包之后的数据包全部重传时下行调度窗口长度的调整示意图; [0022] FIG. 5 is a schematic view of adjusting the length of the window downlink scheduling packet data after error retransmission of all packets within the method provided in the embodiment of the present invention, the error scheduling window;

[0023] 图6是本发明实施例所提供的方法中出错调度窗口内出错数据包重传时下行调度窗口长度的调整示意图; [0023] FIG. 6 is a schematic view of an error within the packet the method provided in the error window scheduled downlink scheduling adjustment window length retransmission embodiment of the present invention;

[0024] 图7是本发明实施例所提供的通信设备的结构示意图; [0024] FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

[0025] 图8是本发明实施例所提供的通信设备的另一结构示意图; [0025] FIG. 8 is a schematic structural diagram of another embodiment of a communication device provided in embodiments of the present invention;

[0026] 图9是本发明实施例所提供的通信系统的结构示意图。 [0026] FIG. 9 is a schematic structural diagram of a communication system provided in the embodiment of the present invention.

具体实施方式[0027] 下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 DETAILED DESCRIPTION [0027] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, rather than all embodiments. 基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, those of ordinary skill in the art to make all other embodiments without creative work obtained by, fall within the scope of the present invention.

[0028] 本发明实施例提供一种数据包的传输方法、通信设备和通信系统。 [0028] The transmission method of the present invention provide a packet communication apparatus and a communication system. 以下分别进行详细说明。 The following are described in detail.

[0029] 实施例一、 [0029] Example I.

[0030] 一种数据包的传输方法,包括:根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,根据调整后的调度窗口长度进行数据包的传输;其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度。 [0030] A method for transmitting data packets, comprising: a current dispatch window length number of packets waiting for transmission of feedback information received last time and adjusted according to, for transmission of data packets according to the scheduling window length adjusted; wherein scheduling window equal to a length greater than the minimum unit of scheduling window length and less than equal to the maximum length of the scheduling window. 如图1所示,具体流程如下: 1, the specific process is shown as follows:

[0031] 101、根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于I且小于等于最大调度窗口长度;其中,I指的是一个调度窗口长度的最小单位,比如一个子帧或帧,等等。 [0031] 101, the number of packets waiting to be sent and received feedback information to adjust the time window length according to the current schedule, wherein the schedule window length less than or equal to the maximum I and scheduling window length; wherein I refers to a scheduling the minimum length of the window unit, such as a frame or sub-frame, and the like. 例如: E.g:

[0032] 若上一次收到的反馈信息为ACK消息,则将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度中增加至少一个调度窗口长度的最小单位得到第二数值,比如可以将当前调度窗口长度中连续发送的子帧/帧数加I得到第二数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度; [0032] If the last received feedback information is ACK message, the number of packets waiting commercially minimum unit of data packets, and the length of each scheduled transmission window of the transmission as a first rounded up value, the current increasing the minimum window length of scheduling at least one scheduling unit of length of the window to obtain a second value, such as may be the subframe length in the current scheduling window continuously transmitted / I to obtain a second value plus the number of frames, taking a first and second numerical values ​​in the minimum value adjusted scheduling window length;

[0033] 若上一次收到的反馈信息为NACK消息,则将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度减少至少一个调度窗口长度的最小单位得到第三数值,比如,可以将当前调度窗口长度中连续发送的子帧/帧数减半向下取整得到第三数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度。 [0033] If the last received feedback information is NACK message, the number of packets waiting commercially minimum unit of data packets, and the length of each scheduled transmission window of the transmission as a first rounded up value, the current the smallest unit of scheduling at least one window to reduce the length of the schedule window length value to obtain a third, for example, be the subframe length in the current scheduling window continuously transmitted / frame half is rounded down to give a third value, taking a first value and in the third the minimum value as the scheduling window length adjusted.

[0034] 其中,对某数向上取整指的是取大于等于该数的第一个整数,比如,对4.2向上取整的话,则得到的数为5,对4向上取整的话则得到的数为4 ;同理,对某数向下取整指的是取小于等于该数的第一个整数,比如,对4.7向下取整,则得到的数为4,对4向下取整则得到的数为4,等等。 [0034] wherein, for a number rounded up refers to take not less than the first integer of the number, for example, of 4.2 rounded up, then the resulting number of 5, four rounded up if the resulting number of 4; Similarly, a number of means rounding down is to take less than or equal to the first integer number, such as number, rounded down to 4.7, is obtained for 4, rounded down to 4 the number of 4 is obtained, and the like.

[0035] 以下将举例作进一步详细说明,如下: [0035] Examples will be described in further detail, as follows:

[0036] 假设调度窗口长度的最小单位为子帧或帧,在每个子帧或帧中可以发送L( ^ I)个数据包,前一时刻调度窗口中的连续子帧(或帧)数为w(n),等待发送数据包的数目为m,下一个调度窗口中的连续发送子帧(或帧)数为w (n+1),最大调度窗口长度为Wmax (t),那么: [0036] The minimum unit is assumed that the scheduling window length sub-frames or may be transmitted in each subframe or frame L packets (^ I), consecutive subframe (or frame) prior to a time schedule window number w (n), the number of packets waiting for transmission is m, a continuous transmission subframe (or frame) the next scheduled number of window w (n + 1), the maximum length of scheduled window Wmax (t), then:

[0037]如果反馈信息为 ACK 消息,则w(« + l) = miii(「m/LlwO) + l); [0037] If the feedback information is an ACK message, then w ( «+ l) = miii (" m / LlwO) + l);

[0038]如果反馈信息为 NACK 消息,则w(« + 1) = min(|" m / L\ \_w(n) / 2 J)。 [0038] If the feedback information is NACK message, then w ( «+ 1) = min (|" m / L \ \ _w (n) / 2 J).

[0039] 需说明的是,其中,I≤w (η)≤Wniax (t),在到达最小调度窗口I后,如果仍然收到NACK信息,则此时保持调度窗口长度为I ;同理,在到达最大调度窗口Wmax (t)后,如果仍然收到ACK信息,则此时保持调度窗口长度为Wmax (t)。 [0039] It is noted that, where, I≤w (η) ≤Wniax (t), after reaching the minimum scheduling window I, if still receive the NACK information, the scheduler window length of holding this time I; Similarly, after reaching the maximum scheduled window Wmax (t), if still receive ACK information at this time to maintain scheduling window length of Wmax (t).

[0040] 其中,最大调度窗口长度Wmax(t)可以根据以下方法进行确定,如下:[0041] (I)获取当前信道质量指不(CQI, Channel Quality Indicator); [0040] wherein the maximum length of the scheduling window Wmax (t) can be determined according to the following methods, as follows: [0041] (I) refers to the current channel quality acquired not (CQI, Channel Quality Indicator);

[0042] 例如,接收终端上报的当前信道质量指示样本点,对接收到的当前信道质量指示样本点作加权平均,得到当前信道质量指示;或者, [0042] For example, the receiving terminal reported channel quality indicator of the current sample point, the received channel quality indicator of the current sample point for the weighted average to obtain a current channel quality indication; or

[0043] 接收终端上报的当前信道质量指示,所述当前信道质量指示为终端对测量的当前信道质量指示样本点作加权平均所得到的。 [0043] The current channel quality indicator reported by a terminal, a current channel quality indication indicates a sample point for the terminal of the current channel quality measurement obtained as the weighted average.

[0044]如下: [0044] as follows:

[0045]_假设加权平均的当前信道质量指示样本点长度为K,则加权平均后的信道质量指示为:P (n) = aK_!P (n-K+1) +aK_2p (η-Κ+2) +...+a0p (η) [0045] _ assuming a weighted average channel quality indicator sample point length of the current is K, channel quality indicator after the weighted average is: P (n) = aK_ P (n-K + 1) + aK_2p (η-Κ +! 2) + ... + a0p (η)

[0046] 其中4(11-10,1^ = 1(-1,1(-2,...,0为1(个信道质量指示样本点4(11)为加权平均 [0046] wherein 4 (11-10,1 = 1 ^ (-1 (-2, ..., 1 0 (channel quality indicator 4 sample points (11) is a weighted average

后得出的当前信道质量指示,aK_1;aK_2...Btl为加权系数,加权系数满足aH+aH+...+a0 = I。 After the current channel quality indication derived, aK_1; aK_2 ... Btl weighting coefficients, the weighting coefficients satisfy aH + aH + ... + a0 = I.

[0047] (2)根据当前信道质量指示确定当前最大调度窗口长度; [0047] (2) indicative of a current maximum determined window length according to the current schedule channel quality;

[0048] 例如,根据当前信道质量指示查找基站所维护的信道质量指示和最大调度窗口长度的对应关系表,确定当前最大调度窗口长度。 [0048] For example, according to a current channel quality indicator table to find the corresponding channel quality indication to maintain the base station and the maximum length of the schedule window, the window length is determined current maximum scheduled.

[0049] 也就是说,如果在一段时间内信道变化缓慢或基本不变,则最大调度窗口长度固定不变,当信道质量指示当前信道相比以前有很大改变时,则通过查表方式可以得到更新的最大调度窗口长度。 [0049] That is, if the channel is substantially constant or changes slowly over time, scheduling the maximum window length is fixed, when the channel quality indication before greatly changed in comparison of the current channel, then the look-up table way can be maximum updated schedule window length.

[0050] 102、根据调整后的调度窗口长度进行数据包的传输;例如: [0051] 若上一次收到的反馈信息为ACK消息,则根据调整的调度窗口长度传输新的数据包。 [0050] 102, according to the adjusted scheduling window length transport packet; for example: [0051] When the feedback information for a received ACK message, then the new data packet according to the adjusted length of the transmission schedule window.

[0052] 若上一次收到的反馈信息为NACK消息,则根据调整的调度窗口长度重传数据包,比如,可以采用如下任意一种方式进行重传: [0052] When the feedback information is a NACK message is received, the schedule according to the adjusted window length retransmitted data packet, for example, be any one of a retransmission employed as follows:

[0053] (I)根据调整的调度窗口长度重传出错调度窗口长度内的全部数据包; [0053] (I) according to the adjusted schedule window length to retransmit all data packets in the wrong scheduling window length;

[0054] (2)根据调整的调度窗口长度重传出错调度窗口长度内的第一个出错数据包及该出错数据包之后的全部数据包,其中,NACK消息中需要携带出错数据包标识,这样才能根据出错数据包标识确定出错数据包,另外,说明的是,此时在调整的调度窗口内除了重传出错数据包之外,还可能传输新的数据包。 [0054] (2) adjusting the weight in accordance with a scheduling window length within a first error came schedule window length packet error and all packets following the erroneous data packet, wherein, NACK error message needs to carry packet identification, so can be determined according to the error packet error packet identification, further, it is noted that, in addition to retransmit the packet error, but also possible to transmit a new packet at this time within the schedule window adjustment.

[0055] (3)根据调整的调度窗口长度重传出错调度窗口长度内的出错数据包,其中,NACK消息中需要携带出错数据包标识,这样才能根据出错数据包标识确定出错数据包,另外,说明的是,此时在调整的调度窗口内除了重传出错数据包之外,还可能传输新的数据包。 [0055] (3) The schedule window length adjusted to retransmit erroneous data packets in the wrong scheduling window length, wherein, NACK message needs to carry the erroneous data packet identification, so as to determine the erroneous data packet according to the error packet identification addition, Note that, except this time retransmission of error packets, but also possible to transmit a new packet in the adjusted scheduling window.

[0056] 需说明的是,在本发明实施例中,对调度窗口长度进行调整的幅度均以:“在上一次收到的反馈信息为ACK消息时,将当前调度窗口长度中连续发送的子帧/帧数加I得到第二数值,在上一次收到的反馈信息为NACK消息时,将当前调度窗口长度中连续发送的子帧/帧数减半向下取整得到第三数值”为例进行说明,应该理解的是,具体实施时,对调度窗口长度进行调整的幅度可以根据预置的策略决定。 [0056] It should be noted that, in this embodiment, the amplitude of the scheduling window length adjusting embodiments of the present invention are: when the "last received feedback information is ACK message, the length of the current sub-window scheduled continuously transmitted frames / number of frames to obtain a second added value I, while the last received feedback information is NACK message, the subframe length in the current dispatch window continuously transmitted / half frame to obtain a third value rounded down "as Examples will be described, it should be understood that the specific embodiment, the amplitude adjusting scheduling window length may be determined according to a preset policy.

[0057] 由上可知,本实施例采用根据等待发送的数据包数和上一次收到的反馈信息来调整当前调度窗口长度,然后根据调整后的调度窗口长度进行数据包的传输,使得调度窗口长度可以随着无线信道质量的变化而改变,即在无线信道质量好的时候,增大调度窗口长度以节省无线资源,在无线信道质量差的时候,减小调度窗口长度以避免一组数据包的反复重传,减小传输时延,从而实现了有效利用无线资源的目的。 [0057] From the above, the present embodiment adjusts the current embodiment scheduled window length, then the length of the data packet according to the scheduling window in accordance with the adjusted transmission of packets waiting to be sent and the number of feedback information received last time, so that the scheduler window length may vary with changes in the quality of the radio channel, i.e. radio channel quality is good, the scheduler increases the length of the window in order to save radio resources when the difference between the radio channel quality, reducing the window size to avoid scheduling a group of data packets repeated retransmission, transmission delay is reduced, thereby achieving efficient use of radio resources purposes. [0058] 实施例二、 [0058] Example II.

[0059] 根据实施例一所描述的方法,本实施例将举例作进一步详细说明。 [0059] According to one embodiment of the method described, for example according to the present embodiment will be described in further detail.

[0060] 首先,需要在基站侧维护一个上行和下行信道质量指示和最大调度窗口长度Wfflax(t)的对应关系表,使得上行和下行可以根据当前信道质量动态的选择最大调度窗口长度。 [0060] First, the need to maintain the base station side uplink and downlink channel quality indicator and the maximum scheduled window length Wfflax (t) correspondence table, so that the uplink and downlink can select the maximum scheduled window size dynamically based on the current channel quality. 如果在一段时间内信道变化缓慢或基本不变,则最大调度窗口长度Wmax(t)固定不变;如果信道质量指示表示当前信道质量与以前的信道质量相比发生了很大改变时,则根据信道质量指示查找对应关系表,以得到更新的最大调度窗口长度Wmax(t)。 If the channel changes slowly, or substantially constant over time, the maximum scheduled window length Wmax (t) constant; if the channel quality indicator represents the current channel quality has changed greatly as compared with the previous channel quality, then in accordance with channel quality indication correspondence lookup table, to obtain the maximum update schedule window length Wmax (t).

[0061] 其次,上行和下行都采用同步ACK/NACK反馈,即在调度窗口后经过固定的时延再发送反馈信息。 [0061] Next, both upstream and downstream synchronous ACK / NACK feedback, i.e. after a fixed time delay after sending the feedback information in the scheduling window. 每一次的调度窗口长度可以根据等待发送数据包数m和线性增加指数减少(AIMD,Additive Increase Multiplicative Decrease)方式自适应调整,即根据等待发送的数据包数和上一次收到的反馈信息进行调整,例如: Every scheduling window length can be reduced adaptively adjusted (AIMD, Additive Increase Multiplicative Decrease) According waiting to send a packet index numbers m and increases linearly, i.e., adjusted according to the number of packets waiting for transmission and the feedback information received last time ,E.g:

[0062] 假设在每个子帧(或帧)中可以发送L( ≤ I)个数据包,前一时刻调度窗口中的连续子帧(或帧)数为w (η),等待发送数据包的数目为m,下一个调度窗口中的连续发送子帧(或帧)数为w (n+1),则: [0062] Suppose may transmit L (≤ I) data packets, before a time schedule window consecutive subframe (or frame) number w (η) in each subframe (or frame), waiting to send the data packet number is m, the continuous transmission subframe (or frame) the next scheduled number of window w (n + 1), then:

[0063] 如果反馈信息为ACK消息,则可以将调度窗口中连续发送的子帧数或帧数加I作为第二数值,将等待发送的数据包数和每个子帧/帧中发送的数据包数的商向上取整作为第一数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度,用公式表示即为:w(? + l) = min(「m/z"],w(?) + l); [0063] If the feedback information is an ACK message, the scheduling sub-frames may be continuous or window frames transmitted as I plus a second value, the number of packets waiting for transmission of packet data and each subframe / frame transmitted number rounded up quotient as a first value, the minimum value of the first and second numerical values ​​as the scheduling of the adjusted window length, that is represented by the formula: w = min ( "m / z (+ l?) "], w + l) (?);

[0064] 如果反馈信息为NACK消息,则可以将调度窗口中连续发送的子帧数或帧数减半向下取整作为第三数值,将等待发送的数据包数和每个子帧/帧中发送的数据包数的商向上取整作为第一数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度,用公式表示即为:w(n + l) = min(「m/Z≤,|_>v(?)/2」)。 [0064] If the feedback information is NACK message, the scheduling sub-frames may be continuous or window frames transmitted by half rounded down as the third value, the number of packets waiting for transmission of each subframe / frame the number of data packets transmitted as the first commercially rounded up value, the minimum value of the first value and the third value as the adjusted schedule window length, that is represented by the formula: w (n + l) = min ( "m / Z≤, | _> v / 2 (?)").

[0065] 其中,调度窗口长度大于等于I且小于等于最大调度窗口长度,即I ≤ w(η)≤1_(0,其中,1和1_(0分别为当前调度窗口中最小和最大连续发送子帧(或帧)数。在到达最小调度窗口长度I后,如果仍然收到NACK反馈,则保持调度窗口长度为I ;同理,在到达最大调度窗口长度Wmax (t)后,如果仍然收到ACK反馈,则保持调度窗口长度为W-⑴。 [0065] wherein the scheduling window size greater than or less equal to the maximum I scheduling window length, i.e., I ≤ w (η) ≤1_ (0, where 1_ and 1 (respectively 0 current scheduling window minimum and maximum continuous transmission sub frames (or frame) after reaching the minimum number of scheduling window length I, if still received NACK feedback, the window length is maintained scheduling I;. Similarly, after the maximum scheduled window length Wmax (t), if still receive ACK feedback is maintained as scheduled window length W-⑴.

[0066] 图2为调度窗口长度的调整示意图,其给出了当发送端一直有数据包发送时调度窗口长度根据ACK消息或NACK消息动态调整的过程:当发送端收到ACK消息后,将下一次调度窗口长度加I,反之,如果收到NACK消息,则将调度窗口长度减半,其中,图2中的D表示数据包子帧或中贞。 [0066] 2 is a schematic longitudinal adjustment of the scheduling window in FIG, which gives the length of the window when scheduling the transmission side has transmitted the data packet according to the ACK message or NACK message procedure dynamically adjusted: When the sender receives the ACK message, the next scheduling window plus the length I, on the contrary, if the NACK message is received, then halve the length of the scheduling window, wherein, in FIG. 2 D represents a data frame or buns Chen.

[0067] 以下将举例说明。 [0067] will be exemplified below.

[0068]( 一)最大调度窗口长度Wmax⑴的自适应调整 [0068] Adaptive adjustment (a) of the maximum scheduled window length Wmax⑴

[0069] (I)下行传输 [0069] (I) downlink transmission

[0070] 在一个下行传输过程中,终端测量下行导频信号以获知下行信道质量,并将测量结果进行周期性或非周期性上报给基站,该上报的测量结果可以是直接测量得到的当前信道质量指示,也可以是在终端侧经过对测量得到的当前信道质量指示样本点作加权平均后的信道质量指示,如果是前者,则需在基站侧根据以前收到的信道质量指示样本点作加权平均。 [0070] In a downlink transmission, the terminal measures a downlink pilot signal in order to know the downlink channel quality, and the measurement result reported to the base station periodically or non-periodically, reports the measurement result of the current channel can be obtained by direct measurement quality indicator may be at the terminal side after indicate the sample points of the current channel quality measured for channel quality indicator weighted average, if the former, you need to indicate sample points according to previously received channel quality at a base station side for weighting average. [0071] 假设加权平均的样本点长度为K,则加权平均后的信道质量指示如下式所示: [0071] Suppose the length weighted average of sample points K, the channel quality indication of the weighted average of the following formula:

[0072] P (n) = aK_!P (n-K+1) +aK_2p (n-K+2) +...+a0p (η) [0072] P (n) = aK_! P (n-K + 1) + aK_2p (n-K + 2) + ... + a0p (η)

[0073] 其中? [0073] where? (11-10,1^ = 1(-1,1(-2,...,0为1(个信道质量指示样本点^(11)为加权平均 (11-10,1 = 1 ^ (-1 (-2, ..., 1 0 (channel quality indicator ^ sample point (11) is the weighted average

后得出的当前信道质量指示,aK_1; aK_2...a0为加权系数,该加权系数需满足..+a0=I。 After obtaining the current channel quality indicator, aK_1; aK_2 ... a0 is a weighting factor, the weighting factor to be fulfilled .. + a0 = I.

[0074] 在得出加权平均后的信道质量指示后,基站就可以根据加权平均后的信道质量指示查找“信道质量指示和最大调度窗口长度Wmax (t)的对应关系表”获得当前下行应该采用的最大调度窗口长度。 [0074] After the channel quality indication after obtain a weighted average, the base station may indicate find "the channel quality indication and the maximum scheduled window length Wmax (t) correspondence table" in accordance with the channel quality of the weighted average to obtain the current downlink should be used the maximum length of the scheduling window.

[0075] (2)上行传输 [0075] (2) uplink transmission

[0076] 在一个上行传输过程中,基站测量终端侧发送的上行导频信号,采用与下行相同的方式得到加权平均后的上行信道质量指示,然后根据加权平均后的上行信道质量指示查找“信道质量指示和最大调度窗口长度Wmax(t)的对应关系表”获知当前上行应该采用的最大调度窗口长度,具体可参见下行传输中的说明,在此不再赘述。 [0076] In an uplink transmission, uplink pilot base station measures the terminal side transmitting the pilot signal using the uplink channel quality indication the obtained weighted average of the same downlink manner, and then instructs the find "channels in accordance with channel quality of an uplink channel weighted average and scheduling the maximum quality indication window length Wmax (t) in the correspondence table "is known maximum length of current uplink scheduling window to be employed, the specific description can be found in the downlink transmission, which is not repeated herein.

[0077] (二)调度窗口的自适应调整 [0077] The adaptive adjustment (b) scheduling window

[0078] 在下行传输过程中,基站通过等待发送数据包数和上一次收到的反馈信息,比如ACK消息或NACK消息实时信息调整当前调度窗口长度; [0078] In the downlink transmission process, the base station waits for transmission of packets and the last received feedback information, such as ACK message or the NACK message information in real time to adjust the current dispatch window length;

[0079] 在上行传输过程中,终端根据等待发送数据包数和上一次收到的反馈信息,比如ACK消息或NACK消息实时信息调整当前调度窗口长度,然后向基站请求上行资源,随后,基站为终端分配连续上行传输子帧数或帧数,这个值不能超过当前最大调度窗口长度。 [0079] In the uplink transmission process, the terminal waits for transmitting feedback information according to the number of data packets and the last received message such as ACK or NACK message information in real time to adjust the current window length scheduling, an uplink resource request to the base station and, subsequently, base station terminal assigned consecutive frames or sub-frames for uplink transmission, the maximum value can not exceed the current scheduling window length.

[0080] 根据反馈重传机制不同,下面将分别描述三种反馈重传方案。 [0080] Depending on the feedback retransmission mechanism, following will describe three feedback retransmission scheme. 在这些方案中均假设调度最小单位为子帧,调度窗口后反馈ACK消息或NACK消息的处理时延固定为一个子帧,同时,假设在每个子帧中可以发送一个数据包。 In these schemes assume that the minimum unit of scheduling sub-frame, the ACK message or the scheduling window feedback NACK message processing delay is fixed a sub-frame, at the same time, can be assumed to send a data packet in each subframe. 需说明的是,在实际应用中,如果在一个子帧中同时调度多个数据包,那么可以通过分别标识每个数据包进行出错重传,具体可参见现有技术,在此不再赘述。 It is noted that, in practical applications, if multiple packets simultaneously scheduled in a subframe, the error retransmission can be performed by identifying each data packet separately, specifically refer to the prior art, it is not repeated here.

[0081] (I)将出错调度窗口内的数据包全部重传 [0081] (I) the scheduling data packets within the window all the error retransmission

[0082] 如图3所示,以Ibit反馈ACK消息或NACK消息,下行ACK消息或NACK消息通过bitmap或不同的正交码区分不同的发送端,而上行ACK消息或NACK消息通过使用不同的资源区域或不同的正交码区分不同的接收端。 [0082] 3 to Ibit feedback ACK message or NACK message, a downlink ACK message or NACK message by bitmap or different orthogonal codes to distinguish different transmission end and the uplink ACK message or NACK message by using different resources regions or different receivers distinguish different orthogonal codes.

[0083] 接收端接收到发送端发送的数据包后,对每个数据包进行解码并缓存,当所有数据包都接收完毕时,如果没有发现出错数据包,则在处理时延后反馈ACK消息,在本实施例中即为在调度窗口后隔一个子帧后反馈ACK消息,发送端收到ACK消息后,调整调度窗口长度发送新数据包。 After [0083] receiving end receives the packet data sent by the transmitting end, each packet is decoded and cached, when all packets have been received, if no packet error, then the delay in processing the feedback ACK message in the present embodiment, a spacer that is scheduled in the subframe rear window feedback ACK message, the sender receives the ACK message, the transmission window length adjustment scheduling a new packet.

[0084] 如果接收端检测到出错数据包,比如图3中的数据包4出现了传输错误,则反馈NACK消息。 [0084] If the receiver detects an error packet, such as packet data in FIG. 34 a transmission error occurred, the feedback is a NACK message. 由于NACK消息只有Ibit大小,不足以指示出错数据包,所以发送端在接收到NACK消息后,需要调整调度窗口长度重传出错调度窗口中的所有数据包,那么,此时原来在一个调度窗口中发送的一组数据包,由于调度窗口的改变可能不再在同一个调度窗口中传输。 Since only Ibit NACK message size, indicating erroneous data packet is not sufficient, the transmitting side after receiving NACK message scheduling window length need to adjust all the packets to retransmit the scheduling window error, so, in one case the original schedule window a group of data packets transmitted, due to a change in the scheduling window may not be the same transmission schedule window.

[0085] 例如,如图3所示,发送端在接收到NACK后,对调度窗口长度进行调整,将调度窗口长度从w(n+1) =3减小到w(n+2) = I,那么,此时原来连续传输的一组数据包3、4和5将分别在两个调度窗口W (n+2)和w(n+3)中进行发送,即数据包3在调度窗口w (n+2)中传输,数据包4和5在调度窗口w(n+3)中传输。 [0085] For example, as shown, the transmitting side after receiving the NACK, the scheduling window length adjustment 3, the length from the schedule window w (n + 1) = 3 is reduced to w (n + 2) = I , then, at this time a group of data packets originally transmitted continuously 3,4 and 5 respectively in the two scheduled transmission window W (n + 2), and w (n + 3), i.e., the packet scheduling window w 3 (n + 2) is transmitted, the packets 4 and 5 on the scheduling window w (n + 3) is transmitted. 在重传完毕后,继续进行新数据包的传输。 After the completion of the retransmission, to continue transmission of new data packet.

[0086] (2)将出错调度窗口内的第一个出错数据包及该出错数据包之后的数据包全部重传 [0086] (2) after the first packet of an error within the error packet scheduling window and all of the erroneous data packet retransmission

[0087] 不同于在方案(I)中对出错调度窗口内的数据包进行全部重传,在方案(2)中,如果接收端检测到第一个出错数据包,则立即停止后继数据包的接收,同时在处理时延后反馈NACK消息,并且,在NACK消息中携带该第一个出错数据包的标识。 [0087] Unlike the error packet scheduling all retransmission window in Scheme (I), the scheme (2), if the first receiver detects an error packet is stopped immediately subsequent data packet receiving, while the delay in processing a NACK message, and, in the NACK message carrying the second identifier in a packet error. 发送端接收到该NACK消息后,停止还没有完成的数据包发送,从接收到NACK消息中获知出错数据包标识,调整调度窗口长度(具体的调整方法可参见前面的说明),将出错调度窗口内的第一个出错数据包及该出错数据包之后的数据包全部重传,重传完毕后,继续进行新数据包的发送。 After the sender receives the NACK message, stop packet transmission has not been completed, is known from erroneous data packet identification NACK message is received, the scheduling window length adjustment (particularly adjustment method can be found in the foregoing description), the scheduling window error a first data packets and the error packets after all the error packet retransmission, the retransmission is completed, proceed to send new data packet.

[0088] 由于出错反馈可能发生在一个调度窗口内的任何位置,所以对上行NACK消息和下行NACK消息采用实时分配反馈资源的方式。 [0088] Because of the feedback error may occur anywhere in a window of the scheduling, the downlink and uplink NACK message NACK messages in real time using the allocation of feedback resources. 如下: as follows:

[0089] 下行NACK消息:通过一组正交码区分不同的终端,如果检测到出错数据包,则基站为下行NACK消息实时分配下行资源,将不同终端的出错数据包标识通过不同的正交码序列调制后以NACK信息的形式反馈给终端。 [0089] NACK downlink message: by a set of orthogonal codes to distinguish between different terminals, if an error is detected the data packet, the base station downlink allocation of downlink resources to NACK messages in real time, the erroneous data packets identified by the different terminals of different orthogonal codes after sequence modulated feedback information NACK to the terminal in the form of. 如图4所示,原来的上行调度窗口为w(n)=6,在第二个子帧基站检测到出错数据包2,在一个子帧的处理时延后,在第四个子帧反馈携带出错数据包标识的NACK消息给终端。 4, the original uplink scheduling window w (n) = 6, the second subframe in the base station 2 detects an error packet, when a sub-frame processing delay, the fourth sub-frame carries a feedback error NACK message packet identifier to the terminal. 终端接收到该NACK消息后,停止原调度窗口中的数据包发送,重新调整调度窗口长度为w (n+1) = 3,从出错数据包,即数据包2开始重传出错数据包并进行未发送完的数据包发送。 Terminal after receiving the NACK message, stops sending packets for the original schedule window, re-adjust the scheduling window of length w (n + 1) = 3, from the erroneous data packet, i.e. a packet 2 begins retransmission of error packets and After data is not transmitted from the packet transmission.

[0090] 上行NACK消息:参见图5,原来的上行调度窗口为w(n) = 5,终端在第二个子帧检测到出错数据包,比如检测到数据包2出错后,经过一个子帧的处理时延,在第四个子帧向基站请求上行资源,再经过一个子帧的处理时延,在第六个子帧发送携带出错数据包标识的NACK消息给基站,基站接收到该NACK消息后,停止原调度窗口中的数据包发送,重新调整调度窗口长度为w(n+l) =2,从出错数据包,即数据包2开始重传出错数据包并进行未发送完的数据包发送。 [0090] Uplink NACK message: Referring to Figure 5, the original uplink scheduling window w (n) = 5, the terminal in the second sub-frame error is detected the data packet, such as packet 2 after detecting an error, after a subframe processing delay, uplink resource request to the base station in a fourth subframes, then the processing delay through one subframe transmits NACK message carrying the identification of erroneous data packet to the base station, the base station receives the NACK message in the sixth sub-frame, stop the original schedule window packets are sent to re-adjust the scheduling window of length w (n + l) = 2, from the erroneous data packet, i.e. a packet 2 begins retransmission of error packets and non-end of transmission of the data packet transmission. 相比于下行,上行NACK消息由于需要通过请求上行资源后才能反馈上行NACK消息,所以会引入资源请求时延。 Compared to the downlink, uplink NACK feedback messages due to the need to request an uplink NACK message through the uplink resource, it will delay the introduction of the resource request.

[0091] 如果没有传输错误,则在处理时延后反馈ACK消息。 [0091] If no transmission error, the processing delay at the time of transmitting ACK message.

[0092] (3)将出错调度窗口内的出错数据包重传 [0092] (3) The retransmission of erroneous data packets within a window of error scheduling

[0093] 在方案(3)中,反馈信息在调度窗口结束后发送,如果没有检测出出错数据包,则反馈ACK消息,如果检测出出错数据包,则反馈NACK消息,该NACK信息中需要携带所有传输出错的数据包标识。 [0093] In Scheme (3), the feedback information after the schedule window is sent, if not detected erroneous data packet, the feedback ACK message, if it is detected an error packet, a NACK message, the NACK message needs to carry all transmission error packet identification.

[0094] 参见图6,原来的上行调度窗口为w(n) = 4,接收端在接收完该调度窗口内的所有数据包1、2、3和4之后,检测出其中数据包3出错,于是,接收端在一个子帧的处理时延后,反馈携带有出错数据包标识的NACK消息给发送端,发送端接收到NACK消息后,获得所有出错数据包标识,发送端调整下一个调度窗口长度为w(η) = 2,然后根据调整后的调度窗口长度进行出错数据包重传和新数据包发送,即重传数据包3和发送新数据包5。 [0094] Referring to Figure 6, the original uplink scheduling window w (n) = 4, the receiving end all packets within the scheduling window 1,2,3 completely received and after 4, wherein the detected error packet 3, Thus, the receiving end when processing a sub-frame delay, the feedback message carries the NACK packet has an error to the sender identifier, the sender receives a NACK message, any error packet identification is obtained, the sender to adjust a scheduling window length w (η) = 2, then an error packet retransmission and transmits a new packet according to the adjusted schedule window length, i.e. the retransmitted data packets 3 and 5 transmit a new packet.

[0095] 需说明的是,由于此时只重传出错数据包,所以接收端需要将成功接收到的重传数据包和缓存数据包经过重新排序后再发给上层进行处理;另外,基站可以为每个终端在上行或下行分配一块资源反馈NACK消息,使得在发送端和接收端可以通过bitmap或不同的正交码序列区分不同的数据包标识,具体可参见现有技术,在此不再赘述。 [0095] It is noted that, due time only to retransmit the packet error, the receiving end needs to be successfully received data packet and the retransmission data packet after the reordering buffer and then sent to the upper layer for processing; Further, the base station may for each terminal in an uplink or downlink resource allocation message is a NACK, so that the sender and receiver can distinguish between different packet identification bitmap or by different orthogonal code sequences, reference may be prior art, which is not repeat.

[0096] 还需说明的是,本发明实施例中的发送端可以为终端或基站,接收端也可以为终端或基站,比如,在上行传输时,发送端为终端,接收端为基站,而在下行传输时,发送端为基站,接收端为终端。 [0096] needs to be noted that the transmission side in the embodiment of the present invention may be a base station or a terminal, the receiving terminal may be a terminal or base station, for example, during uplink transmission, the transmitting side terminal, the receiving terminal to the base station, and when downlink transmission, the transmitting side is a base station, the receiving end terminal.

[0097] 由上可知,本实施例采用在基站侧维护一个信道质量指示和最大调度窗口长度的对应关系表,在获取当前信道质量指示后,通过查表来确定最大调度窗口长度,使得在信道质量好的时候可以采用较大的最大调度窗口长度而在信道质量差的时候可以采用较小的最大调度窗口长度,然后在该最大调度窗口长度范围内根据信道质量好坏实时调整调度窗口以有效利用无线资源; [0097] From the above, the present embodiment adopts the base station side to maintain a correspondence table a channel quality indication and the maximum scheduled length of the window, after obtaining the current channel quality indicator, to determine the maximum scheduling window length look-up table, such that the channel when good quality can be scheduled using a larger maximum window length and the smaller the maximum scheduled window length may be employed when the channel quality is bad, then the real-time adjustment window scheduling according to channel quality is good or bad in the maximum length effective scheduling window use of radio resources;

[0098] 具体实施时,可以根据等待发送的数据包数和上一次收到的反馈信息来调整当前调度窗口长度,然后根据调整后的调度窗口长度进行数据包的传输,使得调度窗口长度可以随着无线信道质量的变化而改变,即在无线信道质量好的时候,增大调度窗口长度以节省无线资源,在无线信道质量差的时候,减小调度窗口长度以避免一组数据包的反复重传,减小传输时延,从而实现了有效利用无线资源的目的。 [0098] During specific embodiment, can be adjusted according to the current scheduling window length feedback information the number of packets waiting to be sent and received last time, then the data packet transmission according to the scheduling window length adjusted, so that the scheduler window length can vary change the radio channel quality is changed, i.e. the radio channel quality is good, the scheduler increases the length of the window in order to save radio resources when the difference between the radio channel quality, reducing the window size to avoid scheduling a group of data packets is repeated weight transmission, transmission delay is reduced, thereby achieving efficient use of radio resources purposes.

[0099] 实施例三、 [0099] Example III.

[0100] 为了更好地实施以上方法,本发明实施例还相应地提供一种通信设备,如图7所示,该通信设备包括调整单元301和传输单元302 ; [0100] In order to implement the above method, further embodiments of the present invention accordingly provides a communication device 7, the communication device includes an adjustment unit 301 and the transmitting unit 302;

[0101] 调整单元301,用于根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度; [0101] adjusting unit 301, the scheduling window for the current length of the packet waiting to be sent and the number of the last received feedback adjustment, wherein, the scheduling window equal to a length greater than the minimum unit of scheduling window length and less than equal to the maximum scheduled window length;

[0102] 传输单元302,用于根据调整单元301调整后的调度窗口长度进行数据包的传输。 [0102] transmitting unit 302, for transmission of data packets according to the scheduling window 301 after adjusting the length adjustment means.

[0103] 如图7所示,该通信设备还可以包括获取单元303和确定单元304 ; [0103] As shown in FIG. 7, the communication device may further include an obtaining unit 303 and the determination unit 304;

[0104] 获取单元303,用于获取当前信道质量指示; [0104] obtaining unit 303, configured to obtain a current channel quality indication;

[0105] 确定单元304,用于根据获取单元303获取到的当前信道质量指示确定当前最大调度窗口长度。 [0105] determination unit 304 determines a current maximum for instructing scheduling window length according to the acquisition unit 303 acquires the current channel quality.

[0106] 此时,所述调整单元301所调整的调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于确定单元304所确定的最大调度窗口长度。 [0106] In this case, the adjustment unit 301 to adjust a scheduling window of length greater than equal to the minimum unit of scheduling a window length equal to and less than the determination unit 304 determines the maximum length of the scheduling window.

[0107] 其中,所述获取单元303包括第一接收子单元3031和第一计算子单元3032 ; [0107] wherein the acquisition unit 303 comprises a first receiving sub-unit and a first calculating subunit 3031 3032;

[0108] 第一接收子单元3031,用于接收终端上报的当前信道质量指示样本点; [0108] The first receiving sub-unit 3031, reported by a terminal for receiving channel quality indicator of the current sample point;

[0109] 第一计算子单元3032,用于对第一接收子单元3031接收到的当前信道质量指示样本点作加权平均,得到当前信道质量指示。 [0109] a first calculating sub-unit 3032, a channel quality of a first sub-unit 3031 receives reception indication of the current sample point for the weighted average to obtain a current channel quality indication.

[0110] 或者,如图8所示,所述获取单元303具体可以为第二接收子单元3033 ; [0110] Alternatively, as shown in FIG, 8 the acquiring unit 303 may specifically be a second receiving subunit 3033;

[0111] 第二接收子单元3033,用于接收终端上报的当前信道质量指示,所述当前信道质量指示为终端对测量的当前信道质量指示样本点作加权平均所得到的。 [0111] The second receiving sub-unit 3033, for the current channel quality indicator reported by a terminal, a current channel quality indication indicates the terminal point as a weighted average of the sample obtained for the current channel quality measurement.

[0112] 此时,所述确定单元304,用于根据第一计算子单元3032计算得到的或第二接收子单元3033接收到的加权平均后的当前信道质量指示确定当前最大调度窗口长度。 [0112] In this case, the determination unit 304 determines a current maximum for indicating the scheduling window size in accordance with the current channel quality of a first weighted average of the calculated calculation sub-unit 3032 or the second receiving sub-unit 3033 receives.

[0113] 如图7和图8所示,调整单元301还可以包括第一调整子单元3011和第二调整子单元3012 ; [0113] As shown in FIGS. 7 and 8, the adjusting unit 301 may further include a first adjustment unit 3011 and a second adjustment sub-sub-unit 3012;

[0114] 第一调整子单元3011,用于在上一次收到的反馈信息为确认ACK消息时,将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度增加至少一个调度窗口长度的最小单位,比如可以将当前调度窗口长度中连续发送的子帧/帧数加I得到第二数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度; Suppliers for the number of data packets minimum unit [0114] a first adjusting sub-unit 3011, a feedback information on the received message is an acknowledgment ACK, and the number of packets waiting for each scheduled transmission window length is transmitted rounding up the first value, the current dispatch window length unit increases the minimum length of the at least one scheduling window, such current may be scheduled in a window length sub-frames consecutively transmitted / I to obtain a second value plus the number of frames, taking a first value and the minimum values ​​in the second window as the scheduling length adjusted;

[0115] 第二调整子单元3012,用于在上一次收到的反馈信息为不确认NACK消息,将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度减少至少一个调度窗口长度的最小单位,比如可以将当前调度窗口长度中连续发送的子帧/帧数减半向下取整得到第三数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度。 [0115] The second adjustment sub-unit 3012, a feedback information on the received NACK message is not confirmed, the number of wait commercially packets sent and the number of packets per minimum unit of scheduling transmission window length rounding up the first value, the current dispatch window to reduce the minimum unit of length at least one scheduling window length, such current may be scheduled in a window length sub-frames consecutively transmitted / frame half is rounded down to obtain a third value, taking a first value and a third minimum value in the window as the scheduling of the adjusted length.

[0116] 此时,所述第一调整单元3011和第二调整子单元3012所调整的调度窗口长度大于等于I且小于等于确定单元304所确定的最大调度窗口长度,其中,I指的是一个调度窗口长度的最小单位。 [0116] At this time, the first adjustment unit 3011 and a second adjustment sub-unit 3012 to adjust a scheduling window length less than or equal to the maximum I and scheduling the determined window length determination unit 304, where, I refer to a the smallest unit of scheduling window length.

[0117] 如图7和图8所示,所述传输单元302可以包括第一传输子单元3021和第二传输子单元3022 ; [0117] FIG 7 and FIG, 8 the transmission unit 302 may include a first transmission sub-unit 3021 and the second transmission subunit 3022;

[0118] 第一传输子单元3021,用于在上一次收到的反馈信息为ACK消息时,根据第一调整子单元3011调整后的调度窗口长度传输新的数据包; When the [0118] first transmission subunit 3021, for the last received feedback information is ACK message, the new data packet according to the adjusted first adjusting sub-unit 3011 scheduled transmission window length;

[0119] 第二传输子单元3022,用于在上一次收到的反馈信息为NACK消息时,根据第二调整子单元3012调整后的调度窗口长度重传出错调度窗口长度内的全部数据包,或者,根据第二调整子单元3012调整后的调度窗口长度重传出错调度窗口长度内的第一个出错数据包及该出错数据包之后全部数据包,或者,根据第二调整子单元3012调整后的调度窗口长度重传出错调度窗口长度内的出错数据包。 When the [0119] second transmission subunit 3022, for the last received feedback information is NACK message, a second adjustment in accordance with the scheduling sub-unit 3012 adjust window length retransmit all data packets in the wrong scheduling window length, Alternatively, the window length according to the scheduling sub-unit 3012 of the second adjustment to adjust to retransmit the entire data packet after the first packet in error fault scheduling window length and the packet error, or, after adjusting the second adjustment sub-unit 3012 in accordance with scheduling window length to retransmit erroneous data packets in the wrong scheduling window length.

[0120] 需说明的是,在以上的方案中,如果不是对出错调度窗口长度内的全部数据包进行重传的话,那么,NACK消息中需要携带出错数据包标识,这样才能根据出错数据包标识确定出错数据包。 [0120] It should be noted that, in the above embodiment, if not all the data packets in error scheduling window length for retransmission, then, NACK message needs to carry an error packet identification, in order according to the error packet identification determining a packet error.

[0121] 该通信设备具体可以为基站或终端,比如,在上行传输时,作为发送端的通信设备可以为终端,作为接收端的通信设备可以为基站,而在下行传输时,作为发送端的通信设备可以为基站,作为接收端的通信设备可以为终端。 [0121] The communication device may specifically be a base station or a terminal, for example, during uplink transmission, the communication device transmitting end may be a terminal, a receiving side communication apparatus may be a base station, and in the downlink transmission, the communication device transmitting side a base station, a communication device may be a terminal receiving end.

[0122] 以上各个单元的具体实施可参见前面的方法实施例,在此不再赘述。 [0122] Example methods can be found in the foregoing specific embodiments of each unit, which is not repeated herein.

[0123] 由上可知,本实施例的通信设备中的调整单元301可以根据等待发送的数据包数和上一次收到的反馈信息来调整当前调度窗口长度,然后由传输单元302根据调整后的调度窗口长度进行数据包的传输,使得调度窗口长度可以随着无线信道质量的变化而改变,即在无线信道质量好的时候,增大调度窗口长度以节省无线资源,在无线信道质量差的时候,减小调度窗口长度以避免一组数据包的反复重传,减小传输时延,从而实现了有效利用无线资源的目的。 [0123] From the above, the adjustment unit 301 of the communication device in the embodiment according to the present embodiment may be adjusted according to the current scheduling window length feedback information the number of packets waiting to be sent and received last time, and then the transmitting unit 302 according to the adjusted transmission scheduling window length packet, so that the scheduler window length may change with changes in the radio channel quality, i.e. the radio channel quality is good, the scheduler increases the length of the window in order to save radio resources when the quality of poor radio channel , schedule window length reduced to avoid repeated retransmission of a group of data packets, transmission delay is reduced, thereby achieving the purpose of effective utilization of radio resources.

[0124] 实施例四、 [0124] Example IV.

[0125] 相应地,本发明实施例还提供一种通信系统,如图9所示,该通信系统可以包括发送端通信设备401和接收端通信设备402 ; [0125] Accordingly, embodiments of the present invention further provides a communication system, shown in Figure 9, the communication system may include a transmitting side communication device 401 and the reception side communication device 402;

[0126] 发送端通信设备401,用于根据等待发送的数据包数和上一次收到的接收端通信设备402发送的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度,根据调整后的调度窗口长度将数据包发送给接收端通信设备402 ; [0126] The sender communication device 401, for the current dispatch window length feedback information the number of packets waiting to be sent and received on a receiving side communication apparatus 402 transmits the adjustment, wherein, the scheduling window of equal length greater than the length of a scheduled window the minimum unit of scheduling and less than equal to the maximum length of window, the window length according to the scheduling transmits the adjusted data packet to the reception side communication device 402;

[0127] 接收端通信设备402,用于接收发送端通信设备401发送的数据包,并发送反馈消息给发送端通信设备401。 [0127] reception side communication device 402 for receiving the transmission packet transmitted from the communication device 401 side, and transmitting the feedback message to the transmitting side communication device 401.

[0128] 其中,所述发送端通信设备401,还用于获取当前信道质量指示,根据当前信道质量指示确定当前最大调度窗口长度。 [0128] wherein said transmitting side communication device 401 is further configured to obtain a current channel quality indicator indicating a current maximum determined window length according to the current schedule channel quality. 例如: E.g:

[0129] 发送端通信设备401接收终端上报的当前信道质量指示样本点,对接收到的当前信道质量指示样本点作加权平均,得到当前信道质量指示,然后根据当前信道质量指示查找基站所维护的信道质量指示和最大调度窗口长度的对应关系表,确定当前最大调度窗口长度;或者, [0129] 401 sent by a terminal side communication device reports the current channel quality indicator sample point, the current received channel quality indicator sample point weighted averaging, to obtain a current channel quality indicator, and then look for the maintenance of the base station according to a current channel quality indication channel quality indication and the maximum length of scheduled window correspondence table, determining a current maximum scheduled window length; or

[0130] 发送端通信设备401接收终端上报的当前信道质量指示,根据当前信道质量指示查找基站所维护的信道质量指示和最大调度窗口长度的对应关系表,确定当前最大调度窗口长度;其中,该终端上报的当前信道质量指示为终端对测量的当前信道质量指示样本点作加权平均所得到的。 [0130] The current channel quality indication 401 sent by a terminal side communication device reported, to find a channel quality indicator the base station maintenance and the correspondence table maximum scheduled length of the window according to a current channel quality indicator, determining a current maximum scheduled window length; wherein the reported by the terminal for the current channel quality indicator indicative of the terminal point of the current channel sample quality measurement obtained as the weighted average.

[0131] 加权平均的方法具体可参见前面实施例,在此不再赘述。 [0131] Specific methods of the weighted average to the previous embodiments, not described herein again.

[0132] 具体的,所述发送端通信设备401,还用于在上一次收到的反馈信息为确认ACK消息时,将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度增加至少一个调度窗口长度的最小单位,比如可以将当前调度窗口长度中连续发送的子帧/帧数加I得到第二数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度;在上一次收到的反馈信息为不确认NACK消息时,将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度减少至少一个调度窗口长度的最小单位,比如可以将当前调度窗口长度中连续发送的子帧/帧数减半向下取整得到第三数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度。 [0132] Specifically, the transmitting side communication device 401 is further configured to receive feedback information on the time when the acknowledgment message ACK, waits a minimum unit transmits the number of packets transmitted and the length of each window in the schedule the number of data packets rounded up commercially as a first value, the current dispatch window length unit increases the minimum length of the at least one scheduling window, such current may be scheduled in a window length sub-frames consecutively transmitted / number of frames to obtain a second added value I scheduling window length adjusted after taking a first value and a second value of the minimum value; feedback information received last time when the NACK message is not recognized, and the number of packets waiting for each scheduled transmission of the window length the number of data packets transmitted in the minimum unit of rounding up the quotient as a first value, reducing the current dispatch window length unit of the at least one scheduling a minimum length of the window, such current may be scheduled in a window length sub-frames consecutively transmitted / reduced frame number semi-rounded down to give a third value, taking a first value and a third minimum value in the window length as the scheduling adjusted. 如下: as follows:

[0133] 假设在每个子帧或帧中可以发送L( ^ I)个数据包,前一时刻调度窗口中的连续子帧(或帧)数为w(η),等待发送数据包的数目为m,下一个调度窗口中的连续发送子帧(或帧)数为w (n+1),最大调度窗口长度为Wmax (t),那么: The number of [0133] assumed that may be transmitted in each subframe or frame L (^ I) packets, consecutive subframe (or frame) prior to a time schedule window number w (η), waiting to send the data packet is m, the next scheduled continuous transmission subframe (or frame) number w (n + 1) of the window, the window length of the maximum scheduled Wmax (t), then:

[0134]如果反馈信息为 ACK 消息,则w(« + l) = πΰη(「/η/Ζ^Η<η) + 1); [0134] If the feedback information is an ACK message, then w ( «+ l) = πΰη (" / η / Ζ ^ Η <η) + 1);

[0135]如果反馈信息为 NACK 消息,贝丨JwO +1) = min([ ml L\ \w{n) / 2 J)。 [0135] If the feedback information is NACK message, shellfish Shu JwO +1) = min ([ml L \ \ w {n) / 2 J).

[0136] 需说明的是,其中,I≤w(n)≤Wniax(t),在到达最小调度窗口I后,如果仍然收到NACK信息,则此时保持调度窗口长度为I ;同理,在到达最大调度窗口Wmax (t)后,如果仍然收到ACK信息,则此时保持调度窗口长度为Wmax (t)。 [0136] It is noted that, where, I≤w (n) ≤Wniax (t), after reaching the minimum scheduling window I, if still receive the NACK information, the scheduler window length of holding this time I; Similarly, after reaching the maximum scheduled window Wmax (t), if still receive ACK information at this time to maintain scheduling window length of Wmax (t).

[0137] 具体的,所述发送端通信设备401,还用于在上一次收到的反馈信息为ACK消息时,根据调整后的调度窗口长度传输新的数据包;在上一次收到的反馈信息为NACK消息时,根据调整后的调度窗口长度重传出错调度窗口长度内的全部数据包;或者,根据调整后的调度窗口长度重传出错调度窗口长度内的第一个出错数据包及该出错数据包之后全部的数据包,或者,根据调整后的调度窗口长度重传出错调度窗口长度内的出错数据包,需说明的是,在以上的方案中,如果不是对出错调度窗口长度内的全部数据包进行重传的话,那么,NACK消息中需要携带出错数据包标识,这样才能根据出错数据包标识确定出错数据包,另外在后两种重传方案中,此时在调整的调度窗口内除了重传出错数据包之外,还可能传输新的数据包。 When [0137] Specifically, the transmitting side communication device 401 is further configured to receive feedback information for the last ACK message according to the scheduling transmission window length adjusted new packet; feedback received on a when the information is NACK message, according to the schedule window length adjusted to retransmit all data packets in the wrong scheduling window length; or, according to the schedule window length adjusted to retransmit erroneous data packets in a first fault and the schedule window length after erroneous data packet all the data packets, or according to the schedule window length adjusted to retransmit erroneous data packets in the wrong scheduling window length, should be noted that, in the above embodiment, if not for the error scheduling window length all the retransmission packets, then, the message needs to carry NACK error packet identification, so as to determine the error packet in accordance with packet identification error, the retransmission in the latter two further embodiment, the adjustment at this time schedule window in addition to retransmission of error packets, but also possible to transmit a new packet. 具体可参见实施例二,在此不再赘述。 Specific see Example II herein omitted.

[0138] 其中,发送端通信设备401和接收端通信设备402具体可以为本发明实施例所提供的任意一种通信设备。 [0138] wherein, the transmission side communication apparatus 401 and the reception side communication device 402 may be oriented in any particular embodiment of a communication apparatus of the embodiment of the invention is provided.

[0139] 由上可知,本实施例的通信系统中的发送端通信设备401获取当前信道质量指示后,根据获取到的当前信道质量指示来确定最大调度窗口长度,使得在信道质量好的时候可以采用较大的最大调度窗口长度而在信道质量差的时候可以采用较小的最大调度窗口长度,然后在该最大调度窗口长度范围内,根据等待发送的数据包数和上一次收到的反馈信息来实时调整当前调度窗口长度,根据调整后的调度窗口长度进行数据包的传输,使得调度窗口长度可以随着无线信道质量的变化而改变,即在无线信道质量好的时候,增大调度窗口长度以节省无线资源,在无线信道质量差的时候,减小调度窗口长度以避免一组数据包的反复重传,减小传输时延,从而实现了有效利用无线资源的目的。 [0139] From the above, the 401 acquires the current channel quality indicator transmission side communication apparatus a communication system according to the present embodiment, to determine the maximum scheduling window length according to the obtained current channel quality indicator, such may be a good channel quality time scheduling using larger maximum time window length in channel quality difference may be a smaller maximum window length scheduling, and scheduling within the maximum window length according to the number of packets waiting for transmission and the last received feedback information real-time adjustment to the current dispatch window length, the data packet transmission according to the scheduling window length adjusted, so that the scheduler window length may change with changes in the quality of the radio channel, i.e. radio channel quality is good, the scheduler increases the length of the window in order to save radio resources when the difference between the radio channel quality, reducing the window size to avoid scheduling a set of repeatedly retransmitted data packet, the transmission delay is reduced, thereby achieving the purpose of efficient use of radio resources.

[0140] 本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读存储介质中,存储介质可以包括:只读存储器(ROM, Read Only Memory)、随机存取记忆体(RAM, RandomAccess Memory)、磁盘或光盘等。 [0140] Those of ordinary skill in the art can appreciate that various embodiments of the method of the above-described embodiments all or part of the steps may be relevant hardware instructed by a program, the program may be stored in a computer-readable storage medium, the storage medium It may include: a read only memory (ROM, Read Only memory), a random access memory (RAM, RandomAccess memory), a magnetic disk or optical disk.

[0141] 以上对本发明实施例所提供的一种数据包的传输方法、通信设备和通信系统进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。 A method for transmitting data packets embodiment provided by [0141] the above embodiment of the present invention, a communication apparatus and communication system are described in detail herein through specific examples of the principles and embodiments of the invention are set forth in the above embodiment the description is intended to help understand the method and core idea of ​​the present invention; while those of ordinary skill in the art, according to the ideas of the present invention, there are changes in the specific embodiment and application of the embodiment, the sum described later, the present specification shall not be construed as limiting the present invention.

Claims (14)

1.一种数据包的传输方法,其特征在于,包括: 根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度; 根据调整后的调度窗口长度进行数据包的传输; 其中,所述根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度包括: 若上一次收到的反馈信息为确认ACK消息,则将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度增加至少一个调度窗口长度的最小单位得到第二数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度; 若上一次收到的反馈信息为不确认NACK消息,则将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的 1. A method for transmitting data packets, characterized by comprising: current scheduling window length packets waiting to be sent and the number of the last received feedback adjustment, wherein, the scheduling window size greater than a minimum length equal to a scheduling window units and less than equal to the maximum length of schedule window; for transmission of data packets according to the scheduling window length adjusted; wherein said number of packets waiting to be sent according to the feedback information received last time and the current schedule window length adjustment comprising: if the the number of data packets received minimum unit for a feedback acknowledgment ACK message, it waits for the scheduled number of packets per window length and transmitted in the transmission rounded up quotient as a first value, the current dispatch window length increases scheduling at least a minimum unit length of the window to obtain a second value, taking a first value and a second minimum values ​​in the window as the scheduling length adjusted; if the received feedback information for a not acknowledge NACK message, it waits for the number of packets sent and the number of packets per window length of the smallest unit of scheduling in the transmission 商向上取整作为第一数值,将当前调度窗口长度减少至少一个调度窗口长度的最小单位得到第三数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度。 Suppliers for rounding up the first value, to reduce the current scheduling window length unit of the at least one scheduling a minimum length of the window to obtain a third value, taking a first value and a third minimum value in the window length as the scheduling adjusted.
2.根据权利要求1所述的方法,其特征在于,还包括: 获取当前信道质量指示; 根据当前信道质量指示确定当前最大调度窗口长度。 2. The method according to claim 1, characterized in that, further comprising: obtaining a current channel quality indication; scheduling window indicates the maximum length is determined according to the current current channel quality.
3.根据权利要求2所述的方法,其特征在于,所述获取当前信道质量指示包括: 接收终端上报的当前信道质量指示样本点,对接收到的当前信道质量指示样本点作加权平均,得到当前信道质量指示;或者, 接收终端上报的当前信道质量指示,所述当前信道质量指示为终端对测量的当前信道质量指示样本点作加权平均所得到的。 3. The method according to claim 2, wherein said obtaining a current channel quality indicator comprising: receiving a current terminal reports channel quality indicator sample point, the current channel quality indication received sample point weighted averaging, to obtain the current channel quality indicator; or the current channel quality indication, reported by a terminal, a current channel quality indication indicates a sample point for the terminal of the current channel quality measurement obtained as the weighted average.
4.根据权利要求2所述的方法,其特征在于,所述根据当前信道质量指示确定当前最大调度窗口长度包括: 根据当前信道质量指示查找基站所维护的信道质量指示和最大调度窗口长度的对应关系表,确定当前最大调度窗口长度。 4. The method according to claim 2, wherein said indication to determine a current maximum scheduled window length comprising a current channel quality: searching for a corresponding channel quality indication base station maintained and the maximum scheduled length of the window according to a current channel quality indicator relationship table to determine the current maximum length of scheduled window.
5.根据权利要求1所述的方法,其特征在于,所述根据调整后的调度窗口长度进行数据包的传输包括: 若上一次收到的反馈信息为ACK消息,则根据调整后的调度窗口长度传输新的数据包。 5. The method according to claim 1, wherein the data packet transmission comprises scheduling the window length according to the adjusted: If the feedback information is ACK message once received, according to the schedule window is adjusted the length of the new packet transmission.
6.根据权利要求1所述的方法,其特征在于,所述根据调整后的调度窗口长度进行数据包的传输包括: 若上一次收到的反馈信息为NACK消息,则根据调整后的调度窗口长度重传出错调度窗口长度内的全部数据包;或者, 根据调整后的调度窗口长度重传出错调度窗口长度内第一个出错数据包及该出错数据包之后全部数据包,其中,NACK消息中携带出错数据包标识;或者, 根据调整后的调度窗口长度重传出错调度窗口长度内的出错数据包,其中,NACK消息中携带出错数据包标识。 6. The method according to claim 1, wherein the data packet transmission comprises scheduling the window length according to the adjusted: if the last received feedback information is a NACK message, according to the schedule window is adjusted length retransmit all data packets in the wrong scheduling window length; or, according to the schedule window length adjusted to retransmit all packets after the first dispatch window length of the error and the error packet error packet, wherein, in the NACK message error carrying packet identification; or, according to the schedule window length adjusted to retransmit erroneous data packets in the wrong scheduling window length, wherein, the message carries the NACK packet identification error.
7.一种通信设备,其特征在于,包括:调整单元,用于根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度; 传输单元,用于根据调整单元调整后的调度窗口长度进行数据包的传输; 所述调整单元包括第一调整子单元和第二调整子单元; 第一调整子单元,用于在上一次收到的反馈信息为确认ACK消息时,将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度增加至少一个调度窗口长度的最小单位得到第二数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度; 第二调整子单元,用于在上一次收到的反馈信息为不确认NACK消息,将等待发送的数据包数和每个调度 A communication apparatus, characterized by comprising: adjusting means, the number of packets waiting for transmission of feedback information received last time and adjusted according to the current schedule window length, which window length not less than a scheduled dispatch window length and less than the minimum unit of length equal to the maximum scheduled window; transmission means for transmitting data packets according to the scheduling window adjusting unit adjusts the length; adjusting the adjustment means comprises a first sub-unit and a second adjustment sub-unit; a first the number of data packets the minimum unit of the adjustment sub-unit, a feedback information on the received message is an acknowledgment ACK, and the number of packets waiting for each scheduled transmission window length is transmitted as a first quotient rounded up value, the current dispatch window lengths increasing the minimum unit of scheduling at least a length of the window to obtain a second value, taking a first value and a second minimum values ​​in the schedule as the adjusted window length; and a second adjusting sub-unit, configured to the last received feedback information is not acknowledgment NACK message, and the number of packets waiting for each scheduled transmission 口长度的最小单位发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度减少至少一个调度窗口长度的最小单位得到第三数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度。 The minimum number of packets transmitted per unit length of the opening is rounded up quotient as a first value, reducing the current dispatch window length unit of the at least one scheduling a minimum length of the window to obtain a third value, taking a first value and a third value in the minimum value as the scheduling window length adjusted.
8.根据权利要求7所述的通信设备,其特征在于,还包括: 获取单元,用于获取当前信道质量指示; 确定单元,用于根据获取单元获取到的当前信道质量指示确定当前最大调度窗口长度。 8. The communication apparatus according to claim 7, characterized in that, further comprising: an acquisition unit for acquiring a current channel quality indication; determining means for determining a current window according to the maximum scheduled acquisition unit acquires the channel quality indication of the current length.
9.根据权利要求8所述的通信设备,其特征在于,所述获取单元包括: 第一接收子单元,用于接收终端上报的当前信道质量指示样本点; 第一计算子单元,用于对第一接收子单元接收到的当前信道质量指示样本点作加权平均,得到当前信道质量指示。 The communication apparatus according to claim 8, wherein said obtaining unit comprises: a first receiving subunit, a currently received channel quality reported by the terminal indicates sample points; a first calculating subunit, configured to a first receiving subunit receives the channel quality indication of the current sample point for the weighted average to obtain a current channel quality indication.
10.根据权利要求8所述的通信设备,其特征在于,所述获取单元具体为: 第二接收子单元,用于接收终端上报的当前信道质量指示,所述当前信道质量指示为终端对测量的当前信道质量指示样本点作加权平均所得到的。 10. The communication apparatus according to claim 8, wherein said obtaining unit is: a second receiving subunit, configured to receive an indication of the current channel quality reported by the terminal, the current channel quality indicator measurement terminal the current channel quality indicator as a weighted average of the sample points are obtained.
11.根据权利要求7所述的通信设备,其特征在于,所述传输单元包括: 第一传输子单元,用于在上一次收到的反馈信息为ACK消息时,根据第一调整子单元调整后的调度窗口长度传输新的数据包; 第二传输子单元,用于在上一次收到的反馈信息为NACK消息时,根据第二调整子单元调整后的调度窗口长度重传出错调度窗口长度内的全部数据包,或者,根据第二调整子单元调整后的调度窗口长度重传出错调度窗口长度内第一个出错数据包及该出错数据包之后全部数据包,或者,根据第二调整子单元调整后的调度窗口长度重传出错调度窗口长度内的出错数据包。 11. The communication apparatus according to claim 7, wherein said transmitting unit comprises: a first transmission sub-unit, a feedback information on the received ACK message is, according to a first adjusting unit to adjust the sub after scheduling the transmission window length new packet; a second transmission subunit for the last feedback information NACK message is received, the scheduling window length according to the second adjustment unit adjusts the retransmission of the wrong sub-schedule window length all the data packets, or the window length according to the scheduling sub-unit of the second adjustment to adjust to retransmit all data packets after scheduling the wrong window length of the first data packets and the error packet error, or, in accordance with the second adjustment sub window length unit schedules adjusted to retransmit erroneous data packets in the wrong scheduling window length.
12.一种通信系统,其特征在于,包括: 发送端通信设备,用于根据等待发送的数据包数和上一次收到的接收端通信设备发送的反馈信息调整当前调度窗口长度,其中,调度窗口长度大于等于一个调度窗口长度的最小单位且小于等于最大调度窗口长度,根据调整后的调度窗口长度将数据包发送给接收端通信设备;其中,所述根据等待发送的数据包数和上一次收到的反馈信息调整当前调度窗口长度包括:若上一次收到的反馈信息为确认ACK消息,则将等待发送的数据包数和每个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度增加至少一个调度窗口长度的最小单位得到第二数值,取第一数值和第二数值中的最小值作为调整后的调度窗口长度;若上一次收到的反馈信息为不确认NACK消息,则将等待发送的数据包数和每 12. A communication system comprising: transmitting side communication device, for adjusting the feedback current scheduling window length according to the number of information packets waiting to be sent and the receiving side apparatus transmits a communication received last time, wherein the scheduling window equal to a length greater than the minimum unit of scheduling window length and less than equal to the maximum length of the scheduling window, the window length according to the scheduling transmits the adjusted data packet to the reception side communication apparatus; wherein, according to the number of packets waiting to be sent and the time received feedback information to adjust the current dispatch window length comprising: a feedback information if the acknowledgment ACK message is received, then the number of packets waiting commercially minimum unit number of packets per window length and scheduling the transmission of transmission rounding up the first value, the current dispatch window lengths increasing the minimum unit of scheduling at least a length of the window to obtain a second value, taking a first value and a second minimum values ​​in the schedule as the adjusted window length; if last received feedback information is not acknowledgment NACK message, the number of data packets sent per will wait 个调度窗口长度的最小单位中发送的数据包数的商向上取整作为第一数值,将当前调度窗口长度减少至少一个调度窗口长度的最小单位得到第三数值,取第一数值和第三数值中的最小值作为调整后的调度窗口长度; 接收端通信设备,用于接收发送端通信设备发送的数据包,并发送反馈消息给发送端通信设备。 The smallest number of packet scheduling unit length of the transmission window, rounding up the quotient as a first value, reducing the current dispatch window length unit of the at least one scheduling a minimum length of the window to obtain a third value, taking a first value and a third value the minimum length of the window as the scheduling adjustment; reception side communication device for receiving data packets transmitted from the transmission side communication apparatus, and sends an acknowledgment message to the sender communication device.
13.根据权利要求12所述的通信系统,其特征在于,还包括: 所述发送端通信设备,还用于获取当前信道质量指示,根据当前信道质量指示确定当前最大调度窗口长度。 13. A communication system as claimed in claim 12, characterized in that, further comprising: the transmitting side communication device further configured to obtain a current channel quality indicator indicating a current maximum determined window length according to the current schedule channel quality.
14.根据权利要求12所述的通信系统,其特征在于,还包括: 所述发送端通信设备,还用于在上一次收到的反馈信息为ACK消息时,根据调整后的调度窗口长度传输新的数据包;在上一次收到的反馈信息为NACK消息时,根据调整后的调度窗口长度重传出错调度窗口长度内的全部数据包;或者,根据调整后的调度窗口长度重传出错调度窗口长度内的第一个出错数据包及该出错数据包之后全部数据包,或者,根据调整后的调度窗口长度重传出错调度窗口长度内的出错数据包。 14. A communication system as claimed in claim 12, characterized in that, further comprising: a communication device the sending end, for further feedback information received last time is the ACK message, the length of the transmission window scheduled adjusted new packet; feedback information received last time when the NACK message according to the scheduling window length adjusted to retransmit all data packets in the wrong scheduling window length; or, according to the schedule window length after the retransmission of the wrong scheduling adjustment after the first error packet within the window length and the error packet all data packets, or according to the schedule window length adjusted to retransmit erroneous data packets in the wrong scheduling window length.
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