CN102523608A - Message sending method and device - Google Patents

Message sending method and device Download PDF

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CN102523608A
CN102523608A CN2011104409714A CN201110440971A CN102523608A CN 102523608 A CN102523608 A CN 102523608A CN 2011104409714 A CN2011104409714 A CN 2011104409714A CN 201110440971 A CN201110440971 A CN 201110440971A CN 102523608 A CN102523608 A CN 102523608A
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transmission
channel reservation
packet
message
channel
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CN2011104409714A
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CN102523608B (en
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卢明勇
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福建星网锐捷网络有限公司
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Abstract

The invention discloses a message sending method and a message sending device which are used for accurately judging whether a channel reservation mechanism is started when a sending end of a wireless network sends a message, so that irrational speed reduction in the wireless network is avoided, the performance of the wireless network is improved, and the expense of a wireless network system is reduced. The message sending method comprises the following steps of: when the sending end sends the message at the time, judging whether a channel reservation parameter value stored at the sending end is less than a preset channel reservation parameter threshold value; if the channel reservation parameter value stored at the sending end is less than the preset channel reservation parameter threshold value, stopping the channel reservation mechanism; if the channel reservation parameter value stored at the sending end is not less than the preset channel reservation parameter threshold value, starting the channel reservation mechanism, and sending a channel reservation message to a receiving end; and after a confirm message of the channel reservation message, which is sent by the receiving end, is received, subtracting 1 from the channel reservation parameter value.

Description

一种报文发送方法及装置 One kind of packet transmission method and apparatus

技术领域 FIELD

[0001] 本发明涉及无线通信技术领域,尤其涉及一种报文发送方法及装置。 [0001] The present invention relates to wireless communication technologies, and in particular, to a packet transmission method and apparatus. 背景技术 Background technique

[0002] 无线局域网络(WLAN,Wireless Local Area Network)提供一种局域网的无线连接服务,能在较小的范围内提供高速的无线数据接入。 [0002] Wireless local area network (WLAN, Wireless Local Area Network) to provide a wireless local area network connection service, to provide high-speed wireless data access within a relatively small range. 接入点(AP,Access Point)是无线局域网的一个无线收发设备,是无线局域网的重要组成设备,AP可以将通过有线网络(如Internet)接收到的数据转换成无线信号发送给终端或者其他网络设备,并将接收到的无线信号转换成数据并转发到有线网络。 An access point (AP, Access Point) is a wireless local area network radio device, the device is an important component of wireless LAN, the AP may transmit transition received through a wired network (e.g. the Internet) data into a wireless signal to the terminal or other network apparatus, and converts the received wireless signal into data and forwarded to the wired network.

[0003] 如图1所示,为无线局域网络的网络结构示意图,终端一般是支持WLAN接入的设备,例如,带无线网卡的笔记本电脑或者智能手机等,通过无线链路关联到AP上,然后通过hternet访问服务器,来实现各种应用,例如,可以访问视频服务器进行视频观看,也可以访问文件传输协议(FTP,File Transfer Protocol)服务器进行FTP下载等。 [0003] FIG. 1, a schematic diagram of a network structure of a wireless local area network, the terminal typically supports WLAN access devices, e.g., a smartphone or a laptop with a wireless network card, a wireless link associated with the AP, then hternet access server to achieve a variety of applications, for example, can access the video server for video viewing, can also access the file transfer protocol (FTP, file transfer protocol) server for FTP downloads.

[0004] 无线局域网络一般采用802. 11协议,802. 11协议定义了不同射频模式下允许的无线帧速率集,规定了各类无线帧的传输速率。 [0004] Usually WLAN protocol employed 802.11, 802.11 protocol defines the different radio mode allows wireless set frame rate, the transmission rate of all types of predetermined radio frames. 如所有控制帧和广播帧都使用基本速率集来发送,单播的数据帧、管理帧使用双方都支持的任何一个速率来发送。 If all the control frames and broadcast frames are transmitted using the basic rate set, the unicast data frame, a management frame transmitted using any of a rate supported by both. 在无线局域网中, 由于存在多径效应和多普勒扩展等因素的影响,因此数据在传输时刻具有不确定性。 In wireless LAN, the presence of multipath and Doppler spread effects and other factors, the data in the transmission timing uncertainty. 若采用固定的传输速率,网络性能将产生大的起伏,这既不利于系统达到最大的网络吞吐量,又不能很好地保证服务质量。 If a fixed rate of transmission, network performance will have big ups and downs, which is not conducive system for maximum network throughput, and can not guarantee a good quality of service. 而因调制方式不同,高速率使用了高阶调制方式,要达到相同的传输成功率需要更高的信噪比,也就是说在同样信噪比下高速率的传输成功率要比低速率低,不同速率之间的传输成功率有着很大的差异。 And because different modulation, high rate using higher order modulation, to achieve the same transmission success rate require a higher signal to noise ratio, which means that a transmission success rate at the same signal to noise ratio than the low-speed low transfer success rates between different rates have great differences.

[0005] 为了在无线链路上选择最佳的速率发送数据,必须要能根据无线链路上的信道环境的好坏动态选择速率,比如根据无线信号的信噪比、报文丢包率、报文重传次数等进行实时的调整。 [0005] In order to choose an optimal rate of data transmission over a wireless link, must be able to dynamically select a rate according to the quality of the channel environment on a wireless link, such as signal to noise ratio of the wireless signal, the packet loss rate, packet retransmission number of times for real-time adjustments. 多速率WLAN中,速率的选择与信道质量相关,而信道质量又通过信号强度(RSSI, Received signal strength hdication)、报文丢包率、吞吐量等信道参数表现,因此可以依据对信道参数的估计和评判来选择报文发送速率。 Multi-rate WLAN, select the relevant rate of the channel quality, and channel quality and signal intensity (RSSI, Received signal strength hdication), the packet loss rate, throughput channel parameters performance can be based on an estimate of the channel parameters and judgment to select the packet transmission rate. 目前,针对802. 11协议的速率自适应算法主要有两类:一类是基于信道直接测量的方法,例如利用接收到的RSSI来决定发送端的发送速率;一类是基于统计的方法,主要有两种统计方法:基于吞吐率的统计和基于报文丢包率的统计,由于统计的方法实现简单,目前大部分设备采用统计的方法选择报文发送速率。 Currently, for a rate adaptive algorithm 802.11 protocol there are two types: one is a method based on direct measurement of the channel, for example using the received RSSI to determine the transmission rate of the transmitting side; one is based on statistical methods, mainly Two statistical methods: based on statistics and packet loss rate based on statistical throughput, due to the statistical method is simple, most of the equipment currently using statistical methods to select packet transmission rate.

[0006] 但是,上述第一类方法中,单靠信号强度无法真实的反映信道质量,例如即使信号强度很高,但干扰信号也很大时,信道质量也是很差;而第二类方法中,基于报文丢包率和吞吐率的统计虽然能在一定程度上反映信道质量,但也存在一定的缺陷:当报文丢包率不是因为噪声干扰而是其他原因,例如冲突导致时,这种情况即使速率降到最低还是会发生丢包,同时这种不合理的降速,影响了无线网络的性能。 [0006] However, the above-described method, the first type, the signal strength alone can not reflect the real channel quality, for example, even if the signal strength is high, but also the interference signal is large, the channel quality is poor; and the second type process , based on the packet loss rate and throughput statistics reflect the channel quality, although to some extent, but there are some drawbacks: when the packet loss rate is not because of the noise but for other reasons, such as conflict led to this case even if the minimum rate or packet loss occurs, but this irrational slow down, affecting the performance of wireless networks.

[0007] 为了防止冲突的发生,802. 11协议允许发送端使用请求发送/允许发送(RTS/CTS)机制来清空传送区域。 [0007] To prevent conflict, 802.11 protocol allows the sender uses request / allowed to send (RTS / CTS) mechanism to clear the transfer area. RTS/CTS机制的使用是可选的,但是,每个支持802. 11协议的设备必须实现该功能。 Use RTS / CTS mechanism is optional, however, each device supports 802.11 protocol must implement this function. 通过RTS/CTS机制,明确预留信道。 By RTS / CTS mechanism, explicit reservation channel. 其原理如下:1)发送端发送RTS (请求发送)帧,RTS帧中包括接收端地址、发送数据帧时间和发送确认(ACK)帧时间;2)接收端用CTS帧回应,CTS帧为发送端预留信道资源的同时,通告所有可能接收到该CTS帧的设备保持静默。 The principle is as follows: 1) The sender sends RTS (request to send) frame, the RTS frame comprises a receiving end address, transmit the data frame time and sends an acknowledgment (ACK) frame time; 2) the receiving end with the CTS frame response, a CTS frame is transmitted end of the reserved channel resources at the same time, the receiving apparatus may advertise all the CTS frame remain silent. 由于RTS帧和CTS帧长度很短,其本身冲突的概率减少,因此RTS/CTS机制可以有效运行于存在冲突的无线环境中,但是,RTS帧与CTS帧会延长报文传输过程,带来一定的系统开销。 Since the RTS frame and the CTS frame length is very short, reducing the probability of conflict itself, so RTS / CTS mechanism can operate effectively in a conflict of wireless environment, however, the RTS frame and the CTS frame will be extended packet transmission process, bring some overhead. 因此,如何能够准确地、有选择地使用RTS/CTS机制,在提高无线网络性能的同时,降低系统开销,成为现有技术亟待解决的技术问题之一。 So how exactly can selectively use RTS / CTS mechanism, while improving wireless network performance, reduce system overhead, the prior art has become one of the technical problems to be solved.

发明内容 SUMMARY

[0008] 本发明实施例提供一种报文发送方法及装置,用以在无线网络中发送端发送报文时,准确判断是否启用信道预留机制,避免无线网络中的不合理降速,在提高无线网络性能的同时,降低无线网络系统开销。 [0008] The embodiments of present invention provide a packet transmission method and apparatus for a wireless network when the sender sends packets, channel reservation mechanism is enabled to accurately determine, in a wireless network to avoid unreasonable deceleration, in improve wireless network performance while reducing wireless network overhead.

[0009] 本发明实施例提供一种报文发送方法,包括: [0009] The present invention provides a packet transmission method, comprising:

[0010] 发送端在本次发送报文时,判断自身存储的信道预留参数值是否低于预设信道预留参数阈值; Parameter Value [0010] The transmitting side when transmitting packets stored by determining whether the channel reservation channel reservation parameter below a predetermined threshold;

[0011] 在判断结果为是时,关闭信道预留机制; [0011] In the determination result is yes, closed channel reservation mechanism;

[0012] 在判断结果为否时,开启信道预留机制,并向接收端发送信道预留消息,以及在接收到所述接收端发送的、所述信道预留消息的确认消息之后,将自身存储的信道预留参数值减1。 After [0012] When the determination result is NO, the open acknowledgment message channel reservation scheme, and transmission and reception of the channel reservation message, and upon receiving the receiving end of the transmission, the channel reservation message, itself channel reservation parameter value stored minus one.

[0013] 本发明实施例提供一种报文发送装置,包括: [0013] The present invention provides a packet transmission apparatus comprising:

[0014] 存储单元,用于预先存储信道预留参数值; [0014] a storage unit for previously storing a channel reservation parameter value;

[0015] 第一判断单元,用于在本次发送报文时,判断所述存储单元存储的信道预留参数值是否低于预设信道预留参数阈值; [0015] The first determination unit, configured to, when this transmission packet, the storage unit stores determination channel reservation parameter values ​​are lower than a preset channel reservation parameter threshold;

[0016] 关闭单元,用于在所述第一判断单元的判断结果为是时,关闭信道预留机制; [0016] closing means for the first determining unit is a determination result, to close the channel reservation mechanism;

[0017] 开启单元,用于在所述第一判断单元的判断结果为否时,开启信道预留机制; [0017] Open unit configured to, when the determination result of the first determining means is NO, open channel reservation mechanism;

[0018] 发送单元,用于在开启单元开启信道预留机制之后,向接收端发送信道预留消息; [0018] The transmission unit after channel reservation for turning mechanism, the transmission channel reservation message to the receiving end in the open unit;

[0019] 接收单元,用于接收所述接收端发送的、所述信道预留消息的确认消息; [0019] a receiving unit, for receiving said receiving end of the transmission, the channel reservation message is an acknowledgment message;

[0020] 第一计数单元,用于在接收到所述信道预留消息的确认消息之后,将自身存储的信道预留参数值减1。 [0020] The first counting means for, after receiving the channel reservation message acknowledgment message, the reservation channel is stored by the parameter value by one.

[0021] 本发明实施例提供的报文发送方法及装置,通过预先存储信道预留参数值,使得发送端在发送报文之前,首先判断信道预留参数值是否低于预设信道预留参数阈值,如果是,则说明已经达到连续使用信道预留机制进行报文发送的最大次数,本次报文发送将关闭信道预留机制;如果否,则发送端可以继续使用信道预留机制进行报文发送,并开启信道预留机制,向接收端发送信道预留消息,在接收到接收端发送的信道预留消息的确认消息之后,将信道预留参数值减1,这样,通过对信道预留参数值的设置及更新,在发送端发送报文时,能够准确判断是否开启信道预留机制,避免了无线网络中的不合理降速,在提高无线网络性能的同时,降低无线网络系统开销。 [0021] The packet transmission method and apparatus provided in the embodiment of the present invention, the parameter values ​​by storing the reservation channel, such that the transmitting side before transmitting the message, first determines whether the channel reservation parameter value lower than a preset channel reservation parameter threshold, if yes, description has reached the continuous use of a channel reservation mechanism maximum number of packets sent, this message is sent to close the channel reservation mechanism; if not, the transmit end can continue to use the channel reservation mechanism packets sending, and the on-channel reservation scheme, transmission channel to a receiving end reservation message, after confirming that the received message channel receiver sends a reservation message, the channel reservation parameter value by one, so that, by the pre-channel setting and updating the parameter values ​​remain, when the transmitting side transmits packets can accurately determine whether the on-channel reservation mechanism in a wireless network to avoid unreasonable deceleration, while improving the performance of a wireless network, the wireless network system to reduce overhead . [0022] 本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。 [0022] Other features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or learned by practice of the present invention. 本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。 The objectives and other advantages of the invention may be realized and attained by the written description, claims, and drawings structure particularly pointed out.

附图说明 BRIEF DESCRIPTION

[0023] 图1为现有技术中,无线局域网络的网络结构示意图; [0023] FIG. 1 is a prior art schematic diagram of a network structure of a wireless local area network;

[0024] 图2为本发明实施例中,隐藏节点场景示意图; [0024] FIG. 2 embodiment, the hidden node scenario schematic diagram of the invention;

[0025] 图3为本发明实施例中,无线校园网络的场景示意图; [0025] FIG. 3 embodiment, the wireless campus network scenario schematic embodiment of the present invention;

[0026] 图4为本发明实施例中,RTS/CTS机制的工作原理示意图; [0026] FIG. 4, the working principle of RTS / CTS mechanism is a schematic embodiment of the present invention;

[0027] 图5为本发明实施例中,报文发送方法的实施流程示意图; [0027] FIG. 5 embodiment of the present invention, a method of transmitting packets schematic flow chart of embodiment;

[0028] 图6为本发明实施例中,一次报文发送的完整流程示意图; [0028] FIG. 6 embodiment of the present invention, once the full process schematic packets;

[0029] 图7为本发明实施例中,报文发送装置的结构示意图。 [0029] Figure 7 a schematic view of the structure of this embodiment, packet transmission apparatus according to the present invention.

具体实施方式 Detailed ways

[0030] 与有线局域网络不同,无线局域网络的介质访问控制层(MAC,Medium Access Control)协议不能检测到传输中的冲突。 [0030] with a wired local area networks, medium access control layer of a wireless local area network (MAC, Medium Access Control) protocol can not detect the transmission conflict. 由于这个原因,在无线局域网中采用的是载波监听/冲突避免(CSMA/CA)机制,每个站点通过感知载波来检测信道是否空闲,这样信道在数据传输时的冲突就能够避免了。 For this reason, in a wireless local area network using a carrier sense / collision avoidance (CSMA / CA) mechanism, each site to detect whether the channel is idle by carrier sensing, so that a channel collision during data transmission can be avoided. CSMA/CA通信方式将时间域的划分与帧格式紧密联系起来, 保证某一时刻只有一个站点发送。 CSMA / CA communication division and the time domain frame format closely together to ensure that there is only one site sends a time. 一方面,载波侦听——查看介质是否空闲;另一方面,避免冲撞——通过随机的时间等待,使信号冲突发生的概率减到最小。 On the one hand, the carrier sense - to see whether the medium is idle; on the other hand, to avoid the collision - Wait a random time, to minimize the probability of signal collision.

[0031] CSMA/CA方法下信号发送流程具体如下:某工作站(STA)在发送报文之前,检测信道是否空闲,以及空闲时间是否大于IEEE802. 11规定的帧间隔时间(IFS),如果否,该STA 就延迟接入,直到当前的传输结束。 [0031] The signaling flow under the CSMA / CA method as follows: a station (STA) before sending a packet, detecting whether the channel is idle, and the frame interval time (IFS) if the idle time is greater than a predetermined IEEE802 11, if no,. the STA will access delay, until the end of the current transmission. 之后,也就是一次成功传输刚结束,这时冲突发生率最高,因为所有待发送的STA都延迟等待这一时刻的到来,为进一步减小冲突,STA选择随机退避(Backoff)再次延迟接入,在检测信道的同时倒数Backofftime计数器,直到其值递减为0。 After, that is, just after a successful transmission, then the highest incidence of conflict, because all STA to be sent are delayed waiting for this moment, in order to further reduce the conflict, STA selects a random backoff (Backoff) delayed access again, detecting the inverse of the channel while Backofftime counter is decremented until its value is 0. 这时,如果其它工作站选择的Backofftime时间更短,它就赢得了信道占用权。 At this time, if other workstations selected Backofftime shorter, it won the right to occupy the channel. 如果这个STA又检测到信道忙,只好再次延迟接入,否则,若信道空闲,则发送报文。 If the STA and the channel is detected busy, but to delay the access again, otherwise, if the channel is idle, the packet is sent.

[0032] IEEE802. 11对Backofftime的确定专门规定了计算公式: . [0032] IEEE802 11 Backofftime specifically determining the predetermined calculation formula:

[0033] Backofftime = RandomO ^aSlotTime [0033] Backofftime = RandomO ^ aSlotTime

[0034] 在这里,Backofftime表示退避时间,而RandomO表示一个随机产生的介于[0, Cff]的随机整数,而且有最大值的限制。 [0034] Here, Backofftime represents backoff time, and RandomO represents a randomly generated between [0, Cff] the random integer and limited to a maximum value. aSlotTime表示总传播时延,其值取决于物理层;CW 是“竞争窗口”参数,介于aCWmin和aCWmax之间,Cff参数的初始值取为aCWmin,以后每次发送不成功时,CW值就双倍增力卩,直到达到aCWmax为止。 aSlotTime represents the total propagation delay whose value depends on the physical layer; the CW is "contention window" parameter, and interposed between aCWmax aCWmin, the initial value of the parameter is taken as aCWmin Cff, on each subsequent unsuccessful transmission, CW value is double Jie force multiplier, so far until it reaches aCWmax. 从以上过程中可以看出CSMA/CA 机制还是有一定概率会发生冲突,特别是在高密度部属的无线网络环境中。 As can be seen from the above process CSMA / CA mechanism still has a certain probability of conflict, especially in high-density subordinates wireless network environment.

[0035] 另外一个存在冲突的场景是隐藏节点的存在,如图2所示,A和C之间距离较远, 无法收到对方的无线电波。 [0035] Further a conflict exists is hidden node scenario, as shown in FIG. 2, the distance between the farther A and C, the other can not receive radio waves. 从A的角度来看,C属于隐藏节点。 From the point of view A, C belongs to a hidden node. 假设A正向B传数据,C也要向B传数据。 A Forward assumed transmitted data B, C to B should transmit the data. 由于A检测不到C的存在,造成A和C同时向B传输数据。 C could not be detected because A, causing A and C simultaneous data transmissions B. 如果多于两个节点同时发送数据,将在B处冲突,B接收到数据的时候发生错误。 If time more than two nodes transmit data simultaneously, will conflict at B, B receives the data error occurs. 由于无线链路是半双工的,节点在发送的时候不知道冲突存在,因此当A和C发送长报文时发生冲突将导致带宽的浪费。 Since the radio link is half-duplex, there is a conflict node does not know when to send, and therefore a conflict occurs when A and C sends a long packets will result in a waste of bandwidth. 无线局域网中,由于隐藏节点导致的冲突问题难以监听,因为无线收发器通常是半双工工作模式,即无法同时收发数据。 Wireless LAN, due to the conflict caused by hidden nodes is difficult to monitor, because the wireless transceiver is usually half-duplex mode, it can not simultaneously send and receive data.

[0036] 隐藏节点的存在,对于无线网络的实际应用有很大的影响,会出现一些无线终端业务几乎无法使用的情况,甚至可能表现为无线连接的问题。 The presence of [0036] hidden nodes, there are practical applications for wireless networks greatly affected, there will be some wireless terminals business situation almost impossible to use, and may even question the performance of the wireless connection. 在一些高密度覆盖的场所,例如无线校园网络,可能需要一个AP信号能够覆盖4-6宿舍,对于处于AP两端的终端很有可能为隐藏节点,如图3所示,终端1和终端2互为隐藏节点。 In some locations covered by the high density, such as a wireless campus network may be required to cover a signal AP 4-6 quarters, at both ends of the AP for a terminal is likely to be hidden nodes 3, terminals 1 and 2 mutually as a hidden node.

[0037] 为了防止冲突的发生,802. 11协议允许发送端使用请求发送/允许发送(RTS/ CTS)机制来清空传送区域。 [0037] To prevent conflict, 802.11 protocol allows the sender uses request / allowed to send (RTS / CTS) mechanism to clear the transfer area. 如图4所示,为RTS/CTS机制的工作原理示意图,发送端在需要向接收端发送报文时,将经过一个分布式协调帧间隔时间(Dire)等待之后,向接收端发送RTS帧,接收端经过一个短帧间隔时间(Sire)之后,向发送端返回CTS帧,发送端在经过一个SIFS之后,向接收端发送数据帧,接收端在接收到所有的数据帧之后,并经过一个SIFS 后向发送端发送ACK确认帧,在从接收端等待的SIFS开始到接收端向发送端发送ACK帧之后,经过一个DIFS之间的时长内,其它的发送端都处于延迟访问状态,之后,各发送端通过竞争窗口等待之后向接收端发送数据。 4, the working principle for the RTS / CTS mechanism is a schematic view, after sending end needs to be sent to a receiving end packet, waits for a distributed coordination through frame interval (Dire), transmits an RTS frame to the receiving end, the receiving end after a short frame interval (on Sire), returns the CTS frame to the sending end, the sending end through a SIFS after transmitting the data frame to the receiving end, the receiving terminal after receiving all data frames, and after a SIFS after sending to the transmitting end ACK acknowledgment frame after the receiving end waiting SIFS begins to the reception side transmits an ACK frame to the sender, through the duration between one of the DIFS, the other transmitting side are in delay access state, after each contention window after sending end to the receiving end of data waiting for transmission. 由图4可知,RTS帧与CTS帧会延长报文传输过程, 带来一定的系统开销,因此,应该尽可能在需要(例如存在冲突)的情况下再使用RTS/CTS 机制,而不是任何情况下都使用。 Seen from FIG. 4, the RTS frame and the CTS frame will be extended packet transmission process, bring some overhead, thus, should be as needed (e.g., conflict) then use RTS / CTS mechanism in the case where, rather than any case under use.

[0038] 基于此,本发明实施例提供一种报文发送方法及装置,用以准确判断是否开启信道预留机制,避免无线网络中的不合理降速,在提高无线网络性能的同时,降低无线网络系统开销。 [0038] Based on this, embodiments of the present invention provides a packet transmission method and apparatus to accurately determine whether the on-channel reservation mechanism, to avoid unreasonable deceleration wireless network, the wireless network while improving performance, reducing wireless network overhead.

[0039] 需要说明的是,本发明实施例涉及的信道预留机制包括但不限于RTS/CTS机制。 [0039] Note that the channel reservation mechanism according to a embodiment of the present invention include, but are not limited to RTS / CTS mechanism.

[0040] 以下结合说明书附图对本申请的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本申请,并不用于限定本申请,并且在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。 [0040] The accompanying drawings in conjunction with the following description of preferred embodiments of the present disclosure, it should be understood that the preferred embodiments described herein are illustrative only illustrate and explain the present case of application, the present application is not intended to limit, and no conflict , and embodiments of the present application, features of the embodiments can be mutually combined.

[0041] 如图5所示,为本发明实施例提供的报文发送方法的实施流程示意图,包括以下步骤: [0041] As shown in FIG 5, a schematic flow chart of embodiment method for sending messages according to an embodiment of the present invention, comprising the steps of:

[0042] S501、发送端在本次发送报文时,判断自身存储的信道预留参数值是否低于信道预留参数阈值,如果是,执行步骤S502,如果否,执行步骤S503 ; [0042] S501, the transmitting end when the current transmission packet stored by determining whether the parameter value channel reservation channel reservation parameter is less than the threshold, if yes, step S502, and if not, to step S503;

[0043] 例如,信道预留参数阈值可以设置为零。 [0043] For example, channel reservation parameter threshold may be set to zero.

[0044] S502、关闭信道预留机制; [0044] S502, closed channel reservation mechanism;

[0045] S503、开启信道预留机制,并向接收端发送信道预留消息,以及在接收到该接收端发送的、信道预留消息的确认消息之后,将该信道预留参数值减1。 After [0045] S503, the message opened confirmation channel reservation scheme, and transmits the channel reservation message receiving terminal, and the reservation message is received, the receiver sends the channel a, the channel reservation parameter value by one.

[0046] 具体实施时,发送端可以预先存储信道预留信息表,其中的一种格式可以如表1 所示: [0046] In specific implementation, the transmit end may be pre-stored channel reservation information table, which can be in a format as shown in Table 1:

[0047] 表1 [0047] TABLE 1

[0048] [0048]

参数名称 说明 参数值MinThSucc 最小发送成功门限值 10MaxThSucc 最大发送成功门限值 60ThSucc 连续发送成功次数阈值 [MinThSucc, MaxThSucc]ThFail 连续发送失败次数阈值 2nSuccess 连续发送成功计数器 [0,ThSucc]nFailed 连续发送失败计数器 [0, ThFail]MinRtsffnd 信道预留参数值最小值 1MaxRtsffnd 信道预留参数值最大值 40Rtsffnd 信道预留参数预设值 [MinRtsWnd, MaxRtsWnd]rtsCounter RTS/CTS连续使用计数器 [0, RtsWnd] Parameter Name Parameter Value MinThSucc minimum transmission success threshold 10MaxThSucc maximum transmission success threshold 60ThSucc continuous transmission success threshold number [MinThSucc, MaxThSucc] ThFail continuous transmission failure threshold is 2nSuccess continuous transmission success counter [0, ThSucc] nFailed continuous transmission failure counter [0, ThFail] MinRtsffnd channel reservation parameter minimum value 1MaxRtsffnd channel reservation parameter Max 40Rtsffnd channel reservation parameter preset value [MinRtsWnd, MaxRtsWnd] rtsCounter RTS / CTS using the continuous counter [0, RtsWnd]

[0049] 各参数的参数值可以根据无线网络信道质量的实际情况进行设置,表1中给出的参数值仅为一种示例,不用于对本发明的限定,其中: [0049] The parameter values ​​of the parameters can be based on the actual quality of the radio network where communication settings, the parameter values ​​given in Table 1 is merely an example, not intended to limit the present invention, wherein:

[0050] 最小发送成功门限值是指连续发送成功次数阈值可以设置的最小值; [0050] The minimum transmission success threshold refers to the minimum number of successful consecutive transmission threshold can be set;

[0051] 最大发送成功门限值是指连续发送成功次数阈值可以设置的最大值; [0051] maximum transmission success threshold value is the maximum number of success threshold may be set to continuous transmission;

[0052] 连续发送成功次数阈值为指定大小的值,其值的取值范围为[MinThSucc, MaxThSucc],当连续发送成功次数达到该阈值时,则在下一次发送报文时可以进行升速发送,本发明实施例中,连续发送成功次数阈值即为第一预设阈值; [0052] The continuous transmission successes threshold is a specified value of the size of the range of its values ​​is [MinThSucc, MaxThSucc], when the continuous number of transmissions successfully reaches the threshold, the next transmission can increases the speed packets sent, embodiments of the present invention, the number of successful consecutive transmission threshold is the first preset threshold value;

[0053] 连续发送成功计数器用于统计连续发送成功次数,其取值范围为0〜连续发送成功次数阈值,当连续发送成功次数达到发送成功次数阈值时,将清零,并重新开始计数; [0053] The continuous transmission success counters for the number of successful continuous transmission, which transmits a continuous range of 0~ success threshold number, the number of successful transmission when the continuous transmission successfully reaches a threshold number of times, will be cleared and restarts counting;

[0054] 同理,连续发送失败计数器用于统计连续发送失败次数,其取值范围为0〜连续发送失败次数阈值,当连续发送失败次数达到连续发送失败次数阈值时,且确定本次发送报文未开启信道预留机制时,下一次发送报文时需要进行降速发送,本发明实施例中,连续发送失败次数阈值即为第二预设阈值; [0054] Similarly, the continuous transmission failure counter for counting the number of consecutive failed transmission, which transmits a continuous range of 0~ failure threshold is, when the continuous transmission failures reaches a threshold number of consecutive failed transmission, and transmits this message to determine when the packet channel reservation mechanism is not turned on, the next time the need for sending packets sent deceleration, embodiment of the present invention, the failure threshold is continuously transmitted is the second preset threshold;

[0055] 信道预留参数值最小值是指信道预留参数预设值可以设置的最小值; [0055] The minimum value of channel reservation channel reservation parameter is the minimum value of the preset parameter can be set;

[0056] 信道预留参数值最大值是指信道预留参数预设值可以设置的最大值; [0056] The maximum value of channel reservation channel reservation parameter is the maximum value of the preset parameter can be set;

[0057] 信道预留参数预设值为指定大小的值,是指可以连续使用RTS/CTS机制的次数, 其值的取值范围为[MinRtsfed,MaxRts1Wnd]; [0057] The channel reservation parameter value specifies the size of the default value, is the number of continuous use the RTS / CTS mechanism, whose value is in the range [MinRtsfed, MaxRts1Wnd];

[0058] RTS/CTS连续使用计数器用于统计RTS/CTS机制开启后的连续使用次数,其取值范围是ο〜信道预留参数预设值,当RTS/CTS机制使用次数达到信道预留参数预设值后, RTS/CTS连续使用计数器清零。 [0058] RTS / CTS using the counter for consecutive times of continuous use of the statistical RTS / CTS mechanism is turned on, which is in the range ο~ channel reservation parameter preset value, when the RTS / CTS mechanism usage reaches channel reservation parameter after the preset value, RTS / CTS using the continuous counter is cleared.

[0059] 具体实施中,在本次报文发送完成之后,还可以包括以下步骤: [0059] In particular embodiments, after completion of transmission of this packet may further include the step of:

[0060] 步骤一、发送端判断本次报文发送是否成功,如果是,执行步骤二,如果否,执行步 [0060] Step a, the transmitting end determines whether the current packet transmission is successful, if yes, step two, and if not, perform step

骤三; Step three;

[0061] 步骤二、发送端将连续发送成功次数增加一次;[0062] 步骤三、发送端将连续发送失败次数增加一次。 [0061] Step two, the transmitting side continuously transmits a successful increase in the number; [0062] Step three, the transmitting side continuously transmits a number of failures increases.

[0063] 具体实施时,若本次报文发送成功,且将连续发送成功次数增加一次之后,发送端可以继续判断连续发送成功次数是否超过预设的连续发送成功次数阈值,如果连续发送成功次数超过预设的连续发送成功次数阈值,则发送端在下一次发送报文时,可以进行升速发送。 [0063] DETAILED the practice, if this message is successfully sent, and the continuous transmission successes increased once, the transmit end can continue to determine whether or not continuous transmission the number of successful exceeds a predetermined continuous transmission success threshold number, if the continuous transmission number of successful exceeds a predetermined threshold number of successful consecutive transmission, the transmit end when the next packet transmission time, increases the speed may be transmitted. 这是因为,若连续多次报文发送均成功,则说明无线网络信道条件较好,在下次发送时可以进行升速发送。 This is because, if the packets are repeatedly successful, then the network is preferably a wireless channel conditions, transmission speed can be upgraded when the next transmission. 同时,为了避免发生冲突,导致发送失败,较佳地,本发明实施例中, 发送端在下一次发送报文时,无论上一次发送报文时是否开启了信道预留机制,均将开启信道预留机制,同时,将信道预留参数值重置为预设值,例如,预设值可以设置为20次,即发送端最多可以连续20次开启信道预留机制,每使用信道预留机制发送一次报文,且在接收到接收端发送的信道预留消息的确认消息之后,信道预留参数值将减1,直至减为信道预留参数阈值(例如,可以设置为0)为止;如果连续发送成功次数未超过预设的连续发送成功次数阈值,则发送端在下一次发送报文时,则保持本次发送速率不变。 Meanwhile, in order to avoid conflict, resulting in transmission failure, preferably, embodiments of the present invention, the transmitting side next when sending a packet, regardless of the time whether to open a channel reservation mechanism for sending a packet, both the on-channel pre stay mechanism, while, the channel reservation parameter value is reset to a preset value, e.g., the preset value may be set to 20, i.e., the transmit end can open up to 20 times the channel reservation scheme, each transmission using the channel reservation mechanism a packet, and after confirming the received message channel receiver sends a reservation message, channel reservation parameter value is decremented by 1 until the Save the reservation parameter threshold is a channel (e.g., may be set to 0) so far; if the continuous transmitting a predetermined number of successful consecutive number of successful transmission does not exceed the threshold, the transmit end once the next packet transmission, the current transmission rate is maintained constant.

[0064] 较佳地,若本次报文发送失败,发送端将连续失败次数增加一次,同时,发送端进一步判断本次发送报文是否开启了信道预留机制,如果本次发送报文已经开启了预留机制,发送端需要继续判断连续发送失败次数是否达到了预设的连续发送失败次数阈值,如果已达到连续发送失败次数阈值,发送端在下一次发送报文时将进行降速发送,如果未达到连续发送失败次数阈值,则下一次发送报文时保持本次发送速率不变。 [0064] Preferably, if the current packet transmission failure, increase the transmit end a number of consecutive failures, while the sending end further determines whether the current packet transmission channel reservation mechanism opens, if this message has been sent opened the reservation mechanism, the sender needs to continue to judge whether continuous transmission failures reaches a preset threshold number of consecutive failed to send, if the continuous transmission failures has reached the threshold, the sender will be sent on the next spin down to send messages, If does not reach the failure threshold is continuously transmitted, the next time the transmission rate remains constant when the current transmission packet. 这是因为,在开启了信道预留机制情况下,依然发送报文失败,则说明发送失败的原因不是因为冲突,而是因为无线网络信道条件下降导致的,所以,发送端在下一次发送报文时需要降速发送,同时, 关闭信道预留机制;如果本次报文发送未开启信道预留机制,则发送端在下一次发送报文时开启信道预留机制。 This is because, in the open channel reservation mechanism case, still send the message fails, the reason for sending was unsuccessful not because of the conflict, but because the wireless network channel conditions fall due, so the sender next time you send a message deceleration required when sending the same time, close the channel reservation mechanism; if this channel reservation message transmission mechanism is not turned on, the transmit end open channel reservation mechanism at the next transmitted packet. 这是因为,本次报文发送时未开启信道预留机制,则本次报文发送失败可能是由于冲突导致的,所以下一次发送报文时将开启信道预留机制,较佳地,此时为了保证报文发送的成功率,发送端可以增大信道预留参数预设值,例如,可以将信道预留参数预设值设置为原来的预设倍数,例如原来预设值设置为20,则现在可以将预设值设置为40。 This is because, in this channel reservation message transmitting mechanism is not turned on, then the current packet transmission failure may be caused due to the conflict, it will open a channel reservation mechanism when the next transmission packet, Preferably, this in order to ensure the success rate of packet transmission, the transmit end can increase channel reservation parameter preset value, e.g., the channel may be reserved for default parameter value is set to a preset multiple of the original, for example, the original 20 is set to a preset value , you can now be the default value is set to 40.

[0065] 特别地,本发明实施例中,若本次报文发送失败,发送端将连续失败次数增加一次后,还可以首先判断连续发送失败次数是否达到了第三预设阈值,如果已经达到了第三预设阈值,则继续判断本次报文发送是否开启了信道预留机制,如果已经开启了信道预留机制,则说明当前网络信道条件较差,因此,可以控制下一次发送报文时进行降速发送,并关闭信道预留机制,如果本次报文发送未开启信道预留机制,则下一次发送报文时,开启信道预留机制,并增大信道预留参数预设值;若连续发送失败次数未达到第三预设阈值,则在下次发送报文时,可以控制下次发送报文速率保持不变。 [0065] In particular, embodiments of the present invention, if the current packet transmission failure, the failed transmission will continuously increase the number of time may also be determined first whether the number of continuous transmission failures reaches a third predetermined threshold value has been reached if a third predetermined threshold then determine whether the current packet transmission channel reservation mechanism open, if you have opened the channel reservation mechanism, then the current network channel condition is poor, and therefore, can transmit a packet under control of the when performing a speed reduction transmission, and close the channel reservation mechanism, if this channel reservation message transmission mechanism is not turned on, the next transmission packet, an open channel reservation mechanism and increase channel reservation parameter defaults ; If the continuous transmission failures does not reach the third predetermined threshold value, then the next transmission packet to be transmitted next control packet rate remains unchanged.

[0066] 为了更好地理解本发明,以下以一次报文发送的完整过程为例,对本发明实施例的实施过程进行说明,本发明实施例中以信道预留参数阈值设置为0为例。 [0066] For a better understanding of the present invention, the following in order to complete the process of sending a message as an example, the implementation process will be described embodiments of the present invention, an example embodiment of a channel reservation to parameter threshold values ​​set to 0. present invention.

[0067] 如图6所示,为一次报文发送的完整过程,可以包括以下步骤: [0067] As shown, once the process is complete packet transmission may comprise the steps 6:

[0068] S601、发送端在本次发送报文时,判断自身存储的信道预留参数是否为0,如果是, 执行步骤S602,否则执行步骤S603 ; [0068] S601, the transmitting end when the current transmission packet stored by the determined parameter whether the channel reservation is 0, if yes, step S602, or else step S603;

[0069] S602、发送端关闭信道预留机制,并执行步骤S604 ; [0069] S602, the transmitting end closed channel reservation mechanism, and performs step S604,;

[0070] S603、发送端开启信道预留机制,并向接收端发送信道预留消息,以及在接收到该接收端发送的、信道预留消息的确认消息之后,将信道预留参数值减1 ; After [0070] S603, the transmitting end channel reservation message opened confirmation mechanism, and sends a channel reservation message receiving terminal, and the reservation message is received, the receiver sends the channel of the channel reservation parameter value minus 1 ;

[0071] S604、发送端判断本次报文发送是否成功,如果是,执行步骤S605,如果否,执行步骤S606 ; [0071] S604, the transmitting end determines whether the current packet transmission is successful, if yes, step S605, and if not, to step S606;

[0072] S605、发送端将连续发送成功次数增加一次,并执行步骤S607 ; [0072] S605, the transmission will continuously increase in the number successfully transmitted once, and performs step S607;

[0073] S606、发送端将连续发送失败次数增加一次,并执行步骤S610 ; [0073] S606, the transmitting end continuously transmits a number of failures increase, and performs step S610;

[0074] S607、发送端进一步判断连续发送成功次数是否达到第一预设阈值,如果是,执行步骤S608,如果否,执行步骤S609 ; [0074] S607, the transmission side continuously transmits further determines whether the number of successfully reaches a first predetermined threshold value, if yes, step S608, and if not, to step S609;

[0075] S608、发送端控制下一次发送报文时进行升速发送; [0075] S608, when the transmission is up-speed transmission under the control of packet transmission end time;

[0076] 具体实施时,发送端在下一次升速发送发送报文时,将开启信道预留机制,并将信道预留参数值重置为预设值。 [0076] During specific embodiment, a transmission side increases the speed transmission is transmitted packets, the open channel reservation mechanism, and the channel reservation parameter value is reset to the next preset value.

[0077] S609、发送端控制下一次发送报文时保持本次发送速率不变; [0077] S609, the current transmission rate remains unchanged under the control of a transmitting side transmits packets;

[0078] S610、发送端进一步判断本次发送报文是否开启了信道预留机制,如果是,执行步骤S611,如果否,执行步骤S614 ; [0078] S610, the transmitting end further determines whether the current packet transmission channel reservation mechanism opened, if yes, step S611, and if not, to step S614;

[0079] S611、发送端继续判断连续发送失败次数是否达到了第二预设阈值,如果是,执行步骤S612,如果否,执行步骤S613 ; [0079] S611, the transmitting side continues to determine whether the number of consecutive transmission failures reaches a second predetermined threshold value, if yes, step S612, the if not, to step S613;

[0080] S612、发送端控制下一次发送报文时进行降速发送; [0080] S612, when performing a speed reduction transmission under control of a transmitting side transmits packets;

[0081] 具体实施时,发送端在下一次降速发送报文时,将关闭信道预留机制。 [0081] In specific implementation, the transmitting side transmits the next packet deceleration time, closes the channel reservation mechanism.

[0082] S613、发送端控制下一次发送报文时保持本次发送速率不变; [0082] S613, the current transmission rate remains unchanged under the control of a transmitting side transmits packets;

[0083] S614、发送端在下次发送报文时,开启信道预留机制,并增大信道预留参数值预设值。 [0083] S614, when the sender sends the next message, open a channel reservation mechanism and increase channel reservation parameter value preset value.

[0084] 具体实施时,步骤S611可以先于步骤S610执行,即当本次报文发送失败时,首先判断连续发送失败次数是否超过第三预设阈值,若连续发送失败次数超过第三预设阈值, 则再执行步骤S610,即继续判断本次报文发送是否开启了信道预留机制,相应地,若本次报文发送开启了信道预留机制,则控制下次发送报文时进行降速发送,若本次报文发送未开启信道预留机制,则下次发送报文时开启信道预留机制,并增大信道预留参数预设值;若连续发送失败次数不超过第三预设阈值,则控制下次发送报文时保持本次发送速率不变。 When [0084] In particular embodiments, step S611 may be executed prior to step S610, i.e., when the current packet transmission failure, continuous transmission is first determined whether the number of failures exceeds a third predetermined threshold value, if the continuous transmission failures exceeds a third predetermined threshold value, then perform step S610, the i.e. continues to determine the current packet transmission is turned on channel reservation mechanism, accordingly, if this message is sent open channel reservation mechanism, the control drop when sending packets Save speed transmission, if the current packet transmission channel reservation mechanism is not turned on, the next open channel reservation mechanism and increase channel reservation parameter preset value transmitted packets; if not continuous transmission failures exceeds a third pre- setting a threshold value, the control to maintain the current transmission rate unchanged when the next packet transmission.

[0085] 由上述过程可以看出,本发明实施例提供的报文发送方法,在进行升速发送报文时,将开启信道预留机制,或者上一次在未开启信道预留机制时,发送报文失败时将开启信道预留机制,并通过设置的信道预留参数预设值控制开启信道预留机制的连续使用次数, 若发送端发现信道预留参数值减为0时,将关闭信道预留机制,或者进行降速发送报文时, 将关闭信道预留机制,从而能够合理地判断是否需要开启信道预留机制,避免因为过多地使用信道预留机制而增加系统开销,同时,通过合理使用信道预留机制避免了当出现报文发送失败时,一味地采用降速来提高报文发送的成功率,从而,避免了不合理地降速,提高了无线网络性能。 [0085] As can be seen from the above-described process, the packet transmission method provided in the embodiment of the present invention, the transmission speed is performed liters packet, channel reservation mechanism will open, or when the last time a channel reservation mechanism in unopened, transmission message will open a channel reservation mechanism fails, and controls the open channel reservation consecutive times using mechanisms reservation parameter preset by channel setting, if the transmitting side finds that the channel reservation parameter value is reduced to zero, closes the channel when reservation mechanism, or by sending packets deceleration, the closed channel reservation mechanism, it is possible to reasonably determine whether to open a channel reservation mechanism to avoid the excessive use of a channel reservation mechanism and increase system overhead and, by use of a channel reservation mechanism reasonably avoided when there is packet transmission failure, blindly using deceleration to improve the success rate of packet transmission, thereby avoiding unreasonably slow down, to improve wireless network performance.

[0086] 基于同一发明构思,本发明实施例中还提供一种报文发送装置,由于该装置解决问题的原理与上述报文发送方法相似,因此该装置的实施可以参见上述报文发送方法的实施,重复之处不再赘述。 [0086] Based on the same inventive concept, an embodiment of the present invention further provides a packet transmission apparatus, since the principle of the device with the above-described problem-solving message transmission method is similar to implementation of the apparatus may refer to the above-described packet transmission method embodiment, repeated description of which will not be repeated.

[0087] 如图7所示,为本发明实施例提供的报文发送装置的结构示意图,包括: [0087] As shown in FIG. 7, a schematic diagram of a configuration packet transmission apparatus according to an embodiment of the present invention, comprising:

[0088] 存储单元701,用于预先存储信道预留参数值;[0089] 第一判断单元702,用于在本次发送报文时,判断存储单元701存储的信道预留参数值是否低于信道预留参数阈值; [0088] The storage unit 701 stores in advance a channel reservation parameter values; [0089] The first determining unit 702, configured to, when the current transmission packet, determining a channel storage unit 701 stores a parameter value is lower than the reserved channel reservation parameter threshold;

[0090] 关闭单元703,用于在第一判断单元702的判断结果为是时,关闭信道预留机制; [0090] The closing unit 703, for the determination result of the first determining unit 702 is YES, channel reservation mechanism closed;

[0091] 开启单元704,用于在第一判断单元702的判断结果为否时,开启信道预留机制; [0091] unit 704 is turned on, for the determination result of the first judging unit 702 is NO, the on-channel reservation mechanism;

[0092] 发送单元705,用于在开启单元704开启信道预留机制之后,向接收端发送信道预留消息; [0092] The transmitting unit 705, after switching unit 704 for opening a channel reservation scheme, channel reservation message transmitted to the receiving end;

[0093] 接收单元706,用于接收接收端发送的、信道预留消息的确认消息; [0093] The receiving unit 706, a receiving end for receiving a transmitted message channel reservation acknowledgment message;

[0094] 第一计数单元707,用于在接收到信道预留消息的确认消息之后,将信道预留参数值减1。 [0094] The first counting unit 707, a acknowledgment message after receiving the channel reservation message, the reservation channel parameter value by one.

[0095] 具体实施时,报文发送装置,还可以包括: [0095] In specific implementation, the packet transmission apparatus may further comprise:

[0096] 第二计数单元,用于在本次报文发送成功时,将连续发送成功次数增加一次; [0096] The second counting unit configured to, when this message is successfully sent, the continuous increase in the number successfully transmitted once;

[0097] 第二判断单元,用于进一步判断连续发送成功次数是否超过第一预设阈值; [0097] The second determination means for further determining whether the number of successful consecutive transmission exceeds a first predetermined threshold;

[0098] 第一速率控制单元,用于在第二判断单元的判断结果为是时,控制在下一次发送报文时进行升速发送; [0098] a first rate control unit for determining the result of the second judging unit is positive, the control increases the speed for the next transmission packet is transmitted;

[0099] 第二速率控制单元,用于在第二判断单元的判断结果为否时,控制下一次发送报文时保持本次发送速率不变。 [0099] The second speed control means for maintaining constant the current transmission rate when the determination result of the second judging unit is NO, under the control of a transmission packet.

[0100] 具体实施中,报文发送装置,还可以包括重置单元,其中: [0100] In particular embodiments, packet transmission apparatus may further include a reset unit, wherein:

[0101] 开启单元704,还用于若下一次发送报文时进行升速发送时,在发送下一次报文时开启信道预留机制; [0101] unit 704 is turned on, when further increases the speed for transmission, channel reservation mechanism open when a packet transmitted at the next time when the transmission packets;

[0102] 重置单元,用于将所述信道预留参数值重置为预设值。 [0102] reset means, said channel reservation for the parameter value is reset to the preset value.

[0103] 具体实施中,开启单元704,还用于在本次报文发送失败、且确定本次发送报文未开启信道预留机制时,开启信道预留机制; [0103] In particular embodiments, the unit 704 is turned on, when the current is further configured to send a failure message, and send packets to determine this channel reservation mechanism is not turned on, the on-channel reservation mechanism;

[0104] 重置单元,还用于增大信道预留参数预设值。 [0104] The reset unit is further configured to increase channel reservation parameter preset value.

[0105] 具体实施中,报文发送装置,还可以包括: [0105] In particular embodiments, packet transmission apparatus may further comprise:

[0106] 第三计数单元,用于在本次报文发送失败时,将连续发送失败次数增加一次; [0106] The third counting unit configured to, when the current packet transmission failure, increase the time continuous transmission failures;

[0107] 第三判断单元,用于确定本次发送报文开启了信道预留机制时,继续判断连续发送失败次数是否达到了第二预设阈值; [0107] The third determination means for determining the current packet transmission channel is opened when the reservation mechanism continues to determine whether the number of continuous transmission failures reaches a second predetermined threshold;

[0108] 第三速率控制单元,用于在第三判断单元的判断结果为是时,控制下一次发送报文时进行降速发送; [0108] The third rate control means for determining the result of the third judging unit is YES, a deceleration time under the control of the transmission when the transmission packets;

[0109] 第四速率控制单元,用于在第三判断单元的判断结果为否时,控制下一次发送报文时保持当前发送速率不变。 [0109] The fourth rate control unit configured to, when the judgment result of the third judging unit is NO, the current transmission rate remains unchanged under the control of a transmission packet.

[0110] 具体实施中,报文发送装置,还可以包括第四计数单元、第四判断单元和第五速率控制单元和第六速率控制单元,其中: [0110] In particular embodiments, packet transmission apparatus may further include a fourth counting unit, the fourth and the fifth unit determines a rate control unit and a sixth rate control unit, wherein:

[0111] 第四计数单元,用于在本次报文发送失败时,将连续发送失败次数增加一次; [0111] Fourth counting unit configured to, when the current packet transmission failure, increase the time continuous transmission failures;

[0112] 第四判断单元,用于在连续发送失败次数达到了第三预设阈值时,继续判断本次发送报文是否开启了信道预留机制; When the [0112] fourth judgment means for transmitting the number of consecutive failures reaches a third predetermined threshold value, it continues to determine whether the current packet transmission channel reservation mechanism turned;

[0113] 第五速率控制单元,用于在第四判断单元的判断结果为是时,控制下一次发送报文时进行降速发送; [0113] The fifth rate control means for determining the result of the fourth determination means is YES, a deceleration time under the control of the transmission when the transmission packets;

[0114] 开启单元704,用于在第四判断单元的判断结果为否时,开启信道预留机制;[0115] 重置单元,用于在开启单元开启信道预留机制时,增大信道预留参数预设值; [0114] unit 704 is turned on, for determining when the result of the fourth determination means is NO, open channel reservation mechanism; [0115] reset means for opening the channel reservation mechanism in the pre-increase channel opening unit leave parameter preset value;

[0116] 第六速率控制单元,用于在连续发送失败次数未达到第三预设阈值时,控制下一次发送报文时保持本次发送速率不变。 [0116] Sixth rate control means for maintaining the current transmission rate unchanged during the continuous transmission failures does not reach the third predetermined threshold value, under the control of a transmission packet.

[0117] 具体实施中,关闭单元703还用于若下一次发送报文时进行降速发送时,在发送下一次报文时关闭信道预留机制。 [0117] In particular embodiments, the closing unit 703 for further transmission when the deceleration when the transmission packets if the time to close the channel reservation mechanism once the next packet transmission.

[0118] 本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。 [0118] skilled in the art should understand that the embodiments of the present disclosure may provide a method, system, or computer program product. 因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。 Accordingly, the present disclosure may be of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in conjunction with the form of software and hardware aspects. 而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。 Further, the present application may take the form of a computer program product embodied in one or more of which comprises a computer usable storage medium having computer-usable program code (including but not limited to, disk storage, CD-ROM, optical memory, etc.).

[0119] 本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。 [0119] The present application is a method according to an embodiment of the present application, a flowchart of a computer program product and apparatus (systems) and / or described with reference to block diagrams. 应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。 It should be understood and implemented by computer program instructions and block, and the flowchart / or block diagrams each process and / or flowchart illustrations and / or block diagrams of processes and / or blocks. 可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。 These computer program instructions may be provided to a processor a general purpose computer, special purpose computer, embedded processor or other programmable data processing apparatus to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing apparatus generating in a device for implementing the flow chart or more flows and / or block diagram block or blocks in a specified functions.

[0120] 这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。 [0120] These computer program instructions may also be stored in a computer can direct a computer or other programmable data processing apparatus to function in a particular manner readable memory produce an article of manufacture such that the storage instruction means comprises a memory in the computer-readable instructions the instruction means implemented in a flowchart or more flows and / or block diagram block or blocks in a specified function.

[0121] 这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。 [0121] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps on the computer or other programmable apparatus to produce a computer implemented so that the computer or other programmable apparatus execute instructions to provide processes for implementing a process or flows and / or block diagram block or blocks a function specified step.

[0122] 尽管已描述了本申请的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例做出另外的变更和修改。 [0122] While the present disclosure has been described with preferred embodiments, but those skilled in the art from the underlying inventive concept can make further modifications and variations to these embodiments. 所以,所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。 Therefore, the appended claims are intended to explain embodiments including the preferred embodiment as fall within the scope of this application and all changes and modifications.

[0123] 本发明实施例提供的报文发送方法及装置,通过预先存储信道预留参数值,使得发送端在发送报文之前,首先判断信道预留参数值是否低于预设信道预留参数阈值,如果是,则说明已经达到连续使用信道预留机制进行报文发送的最大次数,本次报文发送将关闭信道预留机制;如果否,则发送端可以继续使用信道预留机制进行报文发送,并开启信道预留机制,向接收端发送信道预留消息,在接收到接收端发送的信道预留消息的确认消息之后,将信道预留参数值减1,这样,通过对信道预留参数值的设置及更新,在发送端发送报文时,能够准确判断是否开启信道预留机制,避免了无线网络中的不合理降速,在提高无线网络性能的同时,降低无线网络系统开销。 [0123] packet transmission method and apparatus provided in the embodiment of the present invention, the parameter values ​​by storing the reservation channel, such that the transmitting side before transmitting the message, first determines whether the channel reservation parameter value lower than a preset channel reservation parameter threshold, if yes, description has reached the continuous use of a channel reservation mechanism maximum number of packets sent, this message is sent to close the channel reservation mechanism; if not, the transmit end can continue to use the channel reservation mechanism packets sending, and the on-channel reservation scheme, transmission channel to a receiving end reservation message, after confirming that the received message channel receiver sends a reservation message, the channel reservation parameter value by one, so that, by the pre-channel setting and updating the parameter values ​​remain, when the transmitting side transmits packets can accurately determine whether the on-channel reservation mechanism in a wireless network to avoid unreasonable deceleration, while improving the performance of a wireless network, the wireless network system to reduce overhead .

[0124] 显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 [0124] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (14)

1. 一种报文发送方法,其特征在于,包括:发送端在本次发送报文时,判断自身存储的信道预留参数值是否低于预设信道预留参数阈值;在判断结果为是时,关闭信道预留机制;在判断结果为否时,开启信道预留机制,并向接收端发送信道预留消息,以及在接收到所述接收端发送的、所述信道预留消息的确认消息之后,将所述信道预留参数值减1。 A packet transmission method comprising: transmitting end when the current transmission packet, the channel itself determines the stored parameter values ​​are reserved channel reservation parameter lower than a preset threshold; the determination result is yes when closing a channel reservation mechanism; when the determination result is NO, the on-channel reservation scheme, and transmits the channel reservation message receiving terminal, and upon receiving the reservation message transmitted by the receiving end, the acknowledgment channel after the message, the reservation channel parameter value by one.
2.如权利要求1所述的方法,其特征在于,还包括:若本次报文发送成功,所述发送端将连续发送成功次数增加一次;并进一步判断所述连续发送成功次数是否超过第一预设阈值; 在判断结果为是时,所述发送端控制下一次发送报文时进行升速发送; 在判断结果为否时,所述发送端控制下一次发送报文时保持本次发送速率不变。 2. The method according to claim 1, characterized in that, further comprising: if this message is successfully sent, the sending end transmits a continuous increase in the number of successful once; and further determines whether the number of successful consecutive transmission exceeds the a predetermined threshold value; when the determination result is YES, the transmission speed is up-time control of the transmission side transmits the next packet; when the determination result is NO, transmitting the next holding this transmission-side control message transmission time rate unchanged.
3.如权利要求2所述的方法,其特征在于,若下一次发送报文时进行升速发送时,还包括:所述发送端在发送下一次报文时开启信道预留机制;并将所述信道预留参数值重置为预设值。 3. The method according to claim 2, wherein, if the transmission speed is up-next transmission packet, further comprising: transmitting the channel reservation mechanism open when a message packet at the transmission end; and the channel reservation parameter value is reset to the preset value.
4.如权利要求1所述的方法,其特征在于,还包括:若本次报文发送失败、且所述发送端确定本次发送报文未开启信道预留机制时,开启信道预留机制,并增大所述信道预留参数预设值。 4. The method according to claim 1, characterized in that, further comprising: if the current packet transmission failure, and the sending end determines this transmission packet channel reservation mechanism is not turned on, the on-channel reservation mechanism and increasing the channel reservation parameter preset value.
5.如权利要求1所述的方法,其特征在于,还包括:若本次报文发送失败,所述发送端将连续发送失败次数增加一次;且确定本次发送报文开启了信道预留机制时,继续判断连续发送失败次数是否达到了第二预设阈值;如果是,控制下一次发送报文时进行降速发送; 如果否,控制下一次发送报文时保持本次发送速率不变。 5. The method according to claim 1, characterized in that, further comprising: if the current packet transmission failure, the sending end transmits a continuous increase in primary failures; and determining the current packet transmission channel reservation opened when the mechanism continues to determine whether the number of continuous transmission failures reaches a second predetermined threshold; if it is carried out under the control of deceleration when the transmission time to send packets; if not, to maintain the transmission rate unchanged during this time under the control of transmission packets .
6.如权利要求1所述的方法,其特征在于,还包括:若本次报文发送失败,所述发送端将连续发送失败次数增加一次;以及在所述连续发送失败次数达到第三预设阈值时,继续判断本次发送报文是否开启了信道预留机制;如果是,控制下一次发送报文时进行降速发送; 如果否,开启信道预留机制,并增大所述信道预留参数预设值; 在所述连续发送失败次数未达到第三预设阈值时,控制下一次发送报文时保持本次发送速率不变。 6. The method according to claim 1, characterized in that, further comprising: if the current packet transmission failure, the sending end transmits a continuous increase in primary failures; and the number of times reaches a third pre-continuous transmission failure when the set threshold value, continues to determine whether the current packet transmission channel reservation mechanism turned; If yes, deceleration time under the control of the transmission when sending packets; if not, turn the channel reservation mechanism and increasing the pre-channel default parameters remain; the transmission rate remains unchanged when the continuous transmission failures does not reach the third predetermined threshold value, under the control of a transmission packet.
7.如权利要求5或6所述的方法,其特征在于,若下一次发送报文时进行降速发送时, 所述发送端在发送下一次报文时关闭信道预留机制。 7. The method of claim 5 or claim 6, wherein, when deceleration transmission if the next transmission packet, the transmission mechanism when closing a channel reservation message packets at the transmission end.
8. 一种报文发送装置,其特征在于,包括: 存储单元,用于预先存储信道预留参数值;第一判断单元,用于在本次发送报文时,判断所述存储单元存储的信道预留参数值是否低于预设信道预留参数阈值;关闭单元,用于在所述第一判断单元的判断结果为是时,关闭信道预留机制;开启单元,用于在所述第一判断单元的判断结果为否时,开启信道预留机制; 发送单元,用于在开启单元开启信道预留机制之后,向接收端发送信道预留消息; 接收单元,用于接收所述接收端发送的、所述信道预留消息的确认消息; 第一计数单元,用于在接收到所述信道预留消息的确认消息之后,将所述信道预留参数值减1。 A packet transmitting apparatus comprising: a storage unit for previously storing a channel reservation parameter value; a first determination unit configured to, when this transmission packet, the storage unit stores determination of channel reservation parameter values ​​are lower than a preset channel reservation parameter threshold; closing unit, the first determining means for determination result is YES, the channel reservation mechanism closed; opening means for the first a judging unit judging result is NO, the on-channel reservation mechanism; transmitting means for opening after a channel reservation mechanism in the open unit, sends a channel reservation message to the receiving terminal; receiving means for receiving said receiving end transmitting the acknowledgment message, the channel reservation message; a first counting unit for, after receiving the channel reservation message acknowledgment message, the reservation channel parameter value by one.
9.如权利要求8所述的装置,其特征在于,还包括:第二计数单元,用于在本次报文发送成功时,将连续发送成功次数增加一次; 第二判断单元,用于进一步判断所述连续发送成功次数是否超过第一预设阈值; 第一速率控制单元,用于在所述第二判断单元的判断结果为是时,控制在下一次发送报文时进行升速发送;第二速率控制单元,用于在所述第二判断单元的判断结果为否时,控制下一次发送报文时保持本次发送速率不变。 9. The apparatus according to claim 8, characterized in that, further comprising: a second counting unit, configured to, when this message is successfully sent, the continuous increase in the number successfully transmitted once; second determination means for further determining the number of successful consecutive transmission exceeds a first preset threshold value; a first rate control unit for determining the result of the second determination unit is positive, the control increases the speed for the next transmission packet is sent; a first two rate controlling means, for holding constant the current transmission rate when the determination result of the second judging unit is NO, under the control of a transmission packet.
10.如权利要求9所述的装置,其特征在于,还包括:重置单元,其中:所述开启单元,还用于若下一次发送报文时进行升速发送时,在发送下一次报文时开启信道预留机制;所述重置单元,用于将所述信道预留参数值重置为预设值。 10. The apparatus according to claim 9, characterized in that, further comprising: a reset unit, wherein: the opening means further increases the speed for when the next transmission time when transmitting packets, a packet transmission at when open channel reservation mechanism described; the reset unit, said channel reservation for the parameter value is reset to the preset value.
11.如权利要求8所述的装置,其特征在于,所述开启单元,还用于在本次报文发送失败、且确定本次发送报文未开启信道预留机制时,开启信道预留机制;所述重置单元,还用于增大所述信道预留参数预设值。 11. The apparatus according to claim 8, characterized in that the opening unit is further configured to, when the current packet transmission failure, and transmits this packet is determined not open channel reservation mechanism, open channel reservation mechanism; the reset means for further increasing the channel reservation parameter preset value.
12.如权利要求8所述的装置,其特征在于,还包括:第三计数单元,用于在本次报文发送失败时,将连续发送失败次数增加一次; 第三判断单元,用于确定本次发送报文开启了信道预留机制时,继续判断连续发送失败次数是否达到了第二预设阈值;所述第三速率控制单元,用于在所述第三判断单元的判断结果为是时,控制下一次发送报文时进行降速发送;所述第四速率控制单元,用于在所述第三判断单元的判断结果为否时,控制下一次发送报文时保持当前发送速率不变。 12. The apparatus according to claim 8, characterized in that, further comprising: a third counting unit configured to, when the current packet transmission failure, increase the time continuous transmission failures; third determination means for determining when opened this transmission packet channel reservation mechanism continues to determine whether the number of continuous transmission failures reaches a second predetermined threshold value; and the third rate control unit configured to determine the result of the third judging unit is positive when, under the control of the transmission time for deceleration when the transmission packet; said fourth rate control means for maintaining a current transmission rate from time to time when the determination result of the third judging unit is nO, the packet transmission under the control of a change.
13.如权利要求8所述的装置,其特征在于,还包括第四计数单元、第四判断单元、第五速率控制单元和第六速率控制单元,其中:第四计数单元,用于在本次报文发送失败时,将连续发送失败次数增加一次; 第四判断单元,用于在所述连续发送失败次数达到了第三预设阈值时,继续判断本次发送报文是否开启了信道预留机制;第五速率控制单元,用于在所述第四判断单元的判断结果为是时,控制下一次发送报文时进行降速发送;所述开启单元,用于在所述第四判断单元的判断结果为否时,开启信道预留机制; 所述重置单元,用于在所述开启单元开启信道预留机制时,增大所述信道预留参数预设值;第六速率控制单元,用于在所述连续发送失败次数未达到第三预设阈值时,控制下一次发送报文时保持本次发送速率不变。 13. The apparatus according to claim 8, characterized in that, further comprising a fourth counting unit, a fourth determination means, the fifth and sixth rate control unit the rate control unit, wherein: a fourth counting means for the present times when transmission failure message, sending the continuous failures incremented once; fourth judgment unit, when the number of times for sending the successive failures reaches a third predetermined threshold value, continues to determine whether the current packet transmission channel pre-opened stay mechanism; fifth rate control means for determining the result of the fourth determination means is YES, a deceleration time under the control of the transmission when the transmission packet; said opening means in said fourth determination for It means the determination result is NO, the on-channel reservation mechanism; the reset means, upon the opening means for opening a channel reservation mechanism, increasing the channel reservation parameter preset value; sixth rate control means for maintaining constant the current transmission rate when the continuous transmission when the number of failures has not reached the third predetermined threshold value, under the control of a transmission packet.
14.如权利要求12或13所述的装置,其特征在于,所述关闭单元,还用于若下一次发送报文时进行降速发送时,在发送下一次报文时关闭信道预留机制。 14. The apparatus of claim 12 or claim 13, characterized in that the closing unit is further configured to be closed when the deceleration transmitted next if the packet transmission time, a packet in the transmission channel reservation mechanism .
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