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Publication numberCN1656729 A
Publication typeApplication
Application numberCN 02829183
PCT numberPCT/US2002/023103
Publication date17 Aug 2005
Filing date22 Jul 2002
Priority date20 Jun 2002
Also published asEP1525703A1, US20030003905, WO2004002049A1
Publication number02829183.2, CN 02829183, CN 1656729 A, CN 1656729A, CN-A-1656729, CN02829183, CN02829183.2, CN1656729 A, CN1656729A, PCT/2002/23103, PCT/US/2/023103, PCT/US/2/23103, PCT/US/2002/023103, PCT/US/2002/23103, PCT/US2/023103, PCT/US2/23103, PCT/US2002/023103, PCT/US2002/23103, PCT/US2002023103, PCT/US200223103, PCT/US2023103, PCT/US223103
Inventors威廉M什沃迪安
Applicant飞思卡尔半导体公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
System and method for providing signal quality feedback in a wireless network
CN 1656729 A
Abstract  translated from Chinese
提供了一种在无线网络中提供信号质量反馈的方法。 A method of providing signal quality feedback method in a wireless network. 首先,传输设备以数据信号(805)向接收设备发送数据包。 First, the data signal transmission equipment (805) transmits the data packet to the receiving device. 此数据信号以第一传输功率和第一数据传输速率发送。 This data signal is transmitted to the first transmission power and the first data transmission rate. 接收设备以数据信号接收数据包并确定数据信号的信号质量度量。 A data signal to the receiving device receives the packet data and determining a signal quality metric signal. 然后,接收设备以确认信号(815)向传输设备发送确认帧。 Then, a confirmation signal to the receiving device (815) to transmit an acknowledgment frame transmission equipment. 确认帧包括一个或多个反馈位,它们表明数据信号的相对信号质量。 Confirmation frame includes one or more feedback bits, which indicates the relative signal quality of the data signal. 传输设备以确认信号在传输设备中接收确认帧,并基于一个或多个反馈位(835、840、845)分别将第一传输功率和第一数据传输速率调整为第二传输功率和第二数据传输速率。 Acknowledgment signal transmission device to the reception acknowledgment frame transmission apparatus, and based on one or more feedback bits (835,840,845) respectively of the first transmission power and a first data transmission rate is adjusted to the second transmission power and the second data transmission rate.
Claims(9)  translated from Chinese
1.一种在无线网络中提供信号质量反馈的方法,包括下列步骤:在通过无线链路发送的无线数据信号中,以第一传输功率和第一数据传输速率从传输设备向接收设备发送数据包;在接收设备接收无线数据信号中的数据包;在接收设备确定无线数据信号的信号质量度量;在无线确认信号中,从接收设备向传输设备发送确认帧,确认帧包括一个或多个反馈位,所述反馈位表明无线数据信号的相对信号质量;在传输设备接收无线确认信号中的确认帧;以及基于一个或多个反馈位,分别将第一传输功率和第一数据传输速率调整为第二传输功率和第二数据传输速率。 In the wireless data signal transmitted via the radio link to the first transmission power and a first data transmission rate of data transmitted from a transmission apparatus to a reception apparatus: 1. A method for providing signal quality feedback in a wireless network, comprising the steps of packet; receiving signals in a wireless data packet at the receiving apparatus; receiving device determines a signal quality metric of the wireless data signal; a wireless acknowledgment signal, the acknowledgment frame transmitted from the receiving apparatus to the transmitting apparatus, an acknowledgment frame comprises one or more feedback bits, the feedback bit indicates the relative signal quality of the radio data signal; receiving a wireless transmission equipment in the acknowledgment signal ACK frame; and based on one or more feedback bits, respectively, the first transmission power and a first data transmission rate is adjusted a second transmission power and the second data transfer rate.
2.根据权利要求1所述的在无线网络中提供信号质量反馈的方法,其中,所述信号质量度量是信噪比、误码率或接收到的信号强度指示中的一个。 2. The method of providing signal quality feedback in a wireless network according to claim 1, wherein said signal quality metric is the signal to noise ratio, bit error rate or received signal strength indication a.
3.根据权利要求1所述的在无线网络中提供信号质量反馈的方法,其中,确认帧是即时确认帧。 3. The method of providing signal quality feedback in a wireless network according to claim 1, wherein the acknowledgment frame is an acknowledgment frame instant.
4.根据权利要求1所述的在无线网络中提供信号质量反馈的方法,其中,一个或多个反馈位的第一值表明无线数据信号具有高于最佳范围的信号质量度量。 4. The method of providing signal quality feedback in a wireless network according to claim 1, wherein the one or more bits of the first value of the feedback signal indicates that the wireless data having a signal quality metric above the optimum range.
5.根据权利要求4所述的在无线网络中提供信号质量反馈的方法,其中,当反馈位具有第一值时,要么第二传输功率低于第一传输功率,要么第二数据传输速率高于第一数据传输速率。 4 according to the provided method in a wireless network quality feedback signal, wherein, when the feedback bit having a first value or a second transmission power lower than the first transmission power, or the second data transfer rate to claim a first data transmission rate.
6.根据权利要求1所述的在无线网络中提供信号质量反馈的方法,其中,有两个反馈位。 The method according to claim providing signal quality feedback in a wireless network 1, wherein there are two feedback bits.
7.根据权利要求6所述的在无线网络中提供信号质量反馈的方法,其中,两个反馈位的第一组合表明无线数据信号具有高于最佳范围的信号质量度量,其中,两个反馈位的第二组合表明无线数据信号具有在最佳范围内的信号质量度量,其中,两个反馈位的第三组合表明无线数据信号具有低于最佳范围的信号质量度量,以及其中,两个反馈位的第四组合表明,没有提供信号质量信息。 7. The method of providing signal quality feedback in a wireless network according to claim 6, wherein the first combination of two feedback bits indicate that the wireless data signal having a signal quality metric above the optimum range, wherein two feedback The second bit indicates that the wireless combination of a data signal having a signal quality metric within the optimum range, wherein a combination of the two feedback bits indicate the third data signal having a less than optimal wireless range signal quality metric, and wherein the two fourth feedback bit combination indicates that the signal did not provide quality information.
8.根据权利要求1所述的在无线网络中提供信号质量反馈的方法,其中,一个或多个反馈位表明无线数据信号的信号质量度量是在最佳范围内、高于最佳范围还是低于最佳范围。 8. The method of providing signal quality feedback in a wireless network according to claim 1, wherein the one or more signal quality metric feedback bit indicates that the wireless data signal is in the optimum range, higher than the optimum range or low in the optimal range.
9.根据权利要求1所述的在无线网络中提供信号质量反馈的方法,其中,分别将第一传输功率和第一数据传输速率调整为第二传输功率和第二数据传输速率的过程可以包括使第二传输功率等于第一传输功率和使第二数据传输速率等于第一数据传输速率。 9. The method of providing signal quality feedback in a wireless network 1, wherein, respectively, the first transmission power and a first data transfer rate to adjust transmission power of the second data transfer rate and the second process may include a claim the second transmission power is equal to the first transmission power and the second data transmission rate is equal to a first data transmission rate.
Description  translated from Chinese
在无线网络中提供信号质量反馈的系统和方法 It provides a system and method for signal quality feedback in a wireless network

技术领域 Technical Field

本发明涉及无线个人区域网络和无线局域网。 The present invention relates to wireless personal area networks and wireless local area network. 具体来说,本发明涉及用于在无线个人区域网络或无线局域网环境中控制传输功率和传输速率的系统、方法、设备和计算机程序产品。 In particular, the present invention relates to controlling the transmission power and transmission rate in a wireless personal area network or a wireless LAN environment systems, methods, apparatus, and computer program products.

背景技术 Background

国际标准化组织(ISO)的开放系统互连(OSI)标准在最终用户和物理设备之间提供了七层层次结构,通过该层次结构,不同的系统可以进行通信。 International Organization for Standardization (ISO) Open Systems Interconnection (OSI) standard between the end user and the physical device provides seven hierarchy through the hierarchy, different systems can communicate. 每一层都负责不同的任务,OSI标准指定各层之间、以及符合标准的设备之间的交互。 Each layer is responsible for different tasks, OSI standard specifies between the layers, and in line with the standard of interaction between devices.

图1显示了七层OSI标准的层次结构。 Figure 1 shows the seven-layer OSI standard hierarchy. 如图1所示,OSI标准100包括物理层110、数据链路层120、网络层130、传输层140、对话层150、呈现层160和应用层170。 1, OSI standard 100 includes a physical layer 110, data link layer 120, network layer 130, transport layer 140, session layer 150, presentation layer and application layer 170, 160.

物理(PHY)层110在电、机械、功能和过程级别通过网络传送位流。 Physical (PHY) layer 110 in electrical, mechanical, functional and process-level bit stream transmitted over the network. 它提供了用载波发送和接收数据的硬件装置。 It provides the hardware means of sending and receiving data by carrier. 数据链路层120描述了物理介质上位的表示和介质上消息的格式,并以适当的同步发送数据块(如帧)。 The data link layer 120 describes a host of physical media representation and media format of the message, and send data to the appropriate synchronization blocks (such as frame). 网络层130处理向适当的目标路由和转发数据,维护和终止连接。 Network layer 130 processes to the appropriate destination routing and forwarding data, maintaining, and terminating connections. 传输层140管理端对端控制和错误检查,以确保完成数据传输。 Transport layer 140 manages end to end control and error checking to ensure complete data transfer. 对话层150在每一端的应用程序之间建立、协调和终止会话、交换和对话。 The session layer 150 between each side applications to establish, coordinate and terminate sessions, exchange and dialogue. 呈现层160输入和输出数据从一种呈现格式转换为另一种呈现格式。 The presentation layer 160 input and output data from one presentation format into another presentation format. 在应用层170识别通信伙伴、识别服务质量、考虑用户身份证验证和保密,以及标识对数据语法的任何限制。 At the application layer 170 identifying the communication partner, to identify the quality of service, consider the user identity authentication and confidentiality, and the identification of any restrictions on data syntax.

IEEE 802委员会为本地网络开发了三层体系结构,大致对应于OSI标准100的物理层110和数据链路层120。 IEEE 802 Committee has developed a three-tier local network architecture, generally corresponding to the standard OSI physical layer and the data link layer 110 120 100. 图2显示了IEEE 802标准200。 Figure 2 shows the IEEE 802 standard 200.

如图2所示,IEEE 802标准200包括物理(PHY)层210、媒体访问控制(MAC)层220,以及逻辑链路控制(LLC)层225。 2, IEEE 802 standard 200 includes a physical (PHY) layer 210, a media access control (MAC) layer 220, and a logical link control (LLC) layer 225. PHY层210基本上与OSI标准100中的PHY层110操作方式相同。 PHY layer 210 is substantially the OSI standard 100. The PHY layer 110 operate in the same way. MAC和LLC层220和225共享OSI标准100中的数据链路层120的功能。 Function MAC and LLC layers 220 and 225 share the OSI standard 100 data link layer 120. LLC层225将数据放到帧中,帧可以在PHY层210进行传输;MAC层220管理数据链路上的通信,发送数据帧和接收确认(ACK)帧。 LLC layer 225 into the data frame, the frame can be transmitted in the PHY layer 210; communication, sending data frames and receiving acknowledgment (ACK) MAC layer 220 manages the data link frames. MAC和LLC层220和225一起负责错误检查以及重新传输没有被接收到和确认的帧。 MAC and LLC layers 220 and 225 together responsible for error checking and re-transmission frame has not been received and acknowledged.

图3是可以使用IEEE 802.15标准200的无线网络300的方框图。 Figure 3 is a block diagram showing the use of IEEE 802.15 wireless networking standard 300 200. 在优选实施例中,网络300是无线个人区域网络(WPAN)或微型网络。 In the preferred embodiment, network 300 is a wireless personal area network (WPAN) or a micro network. 然而,应该理解,本发明还适用于其中带宽在多个用户之间进行共享的其他环境,如无线局域网(WLAN))或任何其他合适的无线网络。 However, it should be understood that the present invention is also applicable to other environments where bandwidth is shared among multiple users, such as wireless local area network (WLAN)) or any other suitable wireless network.

当使用术语“微型网络”时,它是指以特定方式连接在一起的设备的网络,将一台设备充当控制器(即,它作为主机),而其他设备按照控制器的指令进行操作(即,它们作为从属机)。 When the term "mini-network", which refers to the network to specific devices connected together, one device acts as a controller (that is, it acts as host), and other equipment in accordance with the instruction from the controller to operate (ie They as a slave machine). 控制器可以是指定的设备,也可以只是被选为作为控制器的其中一个设备。 The controller can be specified device, it can also just been selected as one of the device as a controller. 设备和控制器之间的一个主要差别是,控制器必须能够与网络中的所有设备进行通信,而各种设备不必能够与所有其他设备进行通信。 One major difference between the device and the controller, the controller must be able to communicate with all network devices, and a variety of devices without having to be able to communicate with all other devices.

如图3所示,网络300包括控制器310和多个设备320。 3, network 300 includes a controller 310 and a plurality of device 320. 控制器310用于控制网络300的操作。 Controller 310 for controlling the operation of the network 300. 如上所述,控制器310和设备320的系统可以叫做微型网络,在这种情况下,控制器310可以被称为微型网络控制器(PNC)。 As described above, the system controller 310 and the devices 320 may be called a mini-network, in this case, micro-controller 310 may be referred to a network controller (PNC). 每一台设备320都必须通过主无线链路330连接到控制器310,也可以通过辅助无线链路340连接到一个或多个其他设备320。 Each device 320 must be connected via a radio link 330 to the main controller 310 may be connected to one or more other devices 320 via secondary wireless link 340. 网络300的每一个设备320都可以是不同的无线设备,例如,数字静物照相机、数字视频相机,个人数据助理(PDA)、数字音乐播放器,或其他个人无线设备。 Each network device 320 can be 300 different wireless devices, e.g., a digital still camera, a digital video camera, a personal data assistant (PDA), a digital music player, or other personal wireless devices.

在某些实施例中,控制器310可以与设备320中的任何设备是相同类型,只是具有用于控制系统的其他功能以及它与网络300中的每个设备320进行通信。 In certain embodiments, the controller 310 may be any device in the device 320 is of the same type, but with additional features for controlling the system and its network 300. Each device 320 to communicate. 在其他实施例中,控制器可以是单独的指定设备。 In other embodiments, the controller may be designated a separate device.

各种设备320被封闭在可使用的物理区域350内,该区域是这样进行设置的,控制器310可以成功地与每一个设备320进行通信。 Various devices 320 is enclosed within the physical area 350 may be used in the region is set, the controller 310 can successfully with each communication device 320. 能够与控制器310(反之亦然)进行通信的任何设备320都在网络300的可用区域350内。 And controller 310 can (and vice versa) any communication devices 320 are within the usable area 350 of the network 300. 然而,如上文所指出的,网络300中的每个设备320不必与所有其他设备320进行通信。 However, as noted above, the network 300 and each device 320 does not have to communicate with all other devices 320.

图4是图3的网络300中的控制器310或设备320的方框图。 Figure 4 is a block diagram of a network 300 of controller 310 or the device 320. 如图4所示,每一个控制器310或设备320都包括物理(PHY)层410、媒体访问控制(MAC)层420、上层430的集合、以及管理实体440。 As illustrated, each controller 310 or device 320 includes 4 physical (PHY) layer 410, a media access control (MAC) layer 420, an upper set 430, 440 and the management entity.

PHY层410通过主要或辅助无线链路330或340与网络300的其余部分进行通信。 PHY layer 410 to communicate over a primary or secondary wireless link 330 or 340 and the rest of the network 300. 它以可传输的数据格式产生和接收数据,并将它与通过MAC层420可使用的格式来回转换。 It generates data to be transmitted and received data format, and the format it by MAC layer 420 may be used to convert back and forth. MAC层420充当PHY层410所需的数据格式和上层430所需的数据格式之间的接口。 MAC layer 420 acts as an interface PHY layer data format 410 and upper data format required 430 needed between. 上层205包括设备320的功能。 Device 205 includes an upper layer 320 functions. 这些上层430可以包括TCP/IP、TCP、UDP、RTP、IP、LLC等等。 The upper layer 430 may include TCP / IP, TCP, UDP, RTP, IP, LLC, and so on.

通常,WPAN中的控制器310和设备320共享相同的带宽。 Typically, WPAN devices in the controller 310 and 320 share the same bandwidth. 相应地,控制器310协调该带宽的共享。 Accordingly, the controller 310 coordinate the sharing of the bandwidth. 已经开发出了标准,以建立在无线个人区域网络(WRAN)环境中共享带宽的协议。 We have developed standards to establish a wireless personal area network (WRAN) environment shared bandwidth protocol. 例如,IEEE标准802.15.3为这样的环境(其中带宽使用时分多址(TDMA)方式进行共享)中的PHY层410和MAC层420中提供了规范。 For example, IEEE 802.15.3 standard for such an environment (wherein the bandwidth using time division multiple access (TDMA) mode sharing) of MAC layer 410 and PHY layer 420 provides specifications. 使用此标准,MAC层420定义了帧和超帧,通过它们,设备320对带宽的共享由控制器310和/或设备320进行管理。 Using this standard, MAC layer 420 defines the frame and super-frame, through which the bandwidth sharing device 320 by the controller 310 and / or device 320 for management.

WPAN(或微型网络)是通常用于在限制在房屋、办公室、建筑物的地板内的个人电子设备之间共享信息的网络。 WPAN (or mini-networks) is typically used between a limit in the house, the office, the building floor personal electronic devices share network information. 相应地,WPAN的许多用户(或节点)是小型的用电池操作的设备。 Accordingly, WPAN many users (or nodes) is a small battery-operated devices. 利用这样的设备,可以最小化设备的大小以及功耗,从而可以延长电池寿命。 With such a device, the device can minimize the size and power consumption, thereby extending battery life. 低功率传输还具有最小化与其他网络的干扰的优点。 Low power transmission with minimized interference also other networks advantages. 高传输速率可以最小化信道时间使用(这是有限的资源)。 High transmission rate can be minimized channel time using (this is a limited resource).

影响功耗的因素包括每一台设备320所使用的传输功率,以及每一台设备320的传输速率。 Influence factors including the transmission power of each power device 320 used, and a transmission rate of each device 320. 然而,在诸如IEEE 802.15.3标准之类的标准中当前没有从接收器向发射器提供信号质量信息的机制,其反馈将有助于使用户控制其发射器功率或改变其传输速率。 However, standards such as IEEE 802.15.3 standard like the current mechanism does not provide signal quality information from the receiver to the transmitter, the feedback will help to enable users to control their transmitter power or change its transmission rate. 结果,增强功率效率和优化数据传输速率的机会较小。 As a result, the opportunity to enhance the power efficiency and optimize the data transfer rate is small.

当前设备只接收关于数据包传输成功/失败的数据,该数据没有提供足够的信息以调整传输速率和功率。 Currently, only receive information about the packet success / failure of the data, the data do not provide enough information to adjust the transmission speed and power. 对于可以允许高数据包错误率(PER)的实现方式,统计信息是足够的。 For allows high packet error rate (PER) is implemented, statistics are adequate. 然而,当必须维护非常低的PER时,错误不足够多,统计信息是没有意义的。 However, when it is necessary to maintain a very low PER, the error is not enough, statistics are meaningless.

发明内容 DISCLOSURE

本发明的发明人认识到,常规的无线网络协议没有为在保证时隙中传输的数据包的信号质量提供适当的反馈,这就阻止了传输功率和数据传输速率的优化。 The present inventors have recognized that conventional wireless network protocol does not provide adequate feedback to ensure the signal quality of packets transmitted time slot, which prevents the transmission of power and data transfer rate optimization. 相应地,本发明的一个目标是提供此问题的解决方案,以及其他问题和与无线网络协议关联的不足。 Accordingly, one object of the present invention is to provide inadequate solution to this problem, and other problems and is associated with a wireless network protocols.

在本发明的一个实施例中,提供了一种在无线网络中提供信号质量反馈的方法。 In one embodiment of the present invention, there is provided a method of providing signal quality feedback method in a wireless network. 此方法包括在通过无线链路发送的无线数据信号中,以第一传输功率和第一数据传输速率从传输设备向接收设备发送数据包的步骤;在接收设备接收无线数据信号中的数据包;在接收设备确定无线数据信号的信号质量度量;在无线确认信号中,从接收设备向传输设备发送确认帧,确认帧包括一个或多个反馈位,所述反馈位表明无线数据信号的相对信号质量;在传输设备接收无线确认信号中的确认帧;以及基于一个或多个反馈位,分别将第一传输功率和第一数据传输速率调整为第二传输功率和第二数据传输速率。 This method includes the steps of wireless data signals transmitted via radio link to the first transmission power and the first data transmission rate from the transmission device to the receiving device to send data packets; receiving a data signal at the receiving device in a wireless data packet; In the receiving device determines a signal quality metric of the wireless data signal; a wireless acknowledgment signal, the acknowledgment frame transmitted from the receiving apparatus to the transmitting apparatus, an acknowledgment frame comprises one or more feedback bits, the feedback bit indicates the relative signal quality of the radio data signal ; radio receiving acknowledgment signal ACK frame transmission apparatus; and based on one or more feedback bits, respectively, the first transmission power and a first data transfer rate and the second transmission power is adjusted to a second data transfer rate.

优选情况下,信号质量度量是信噪比、误码率或接收到的信号强度指示。 Preferably, the signal quality metric is the signal to noise ratio, bit error rate or received signal strength indication. 优选情况下,确认帧是即时确认帧。 Preferably, the acknowledgment frame is a frame instant confirmation.

优选情况下,一个或多个反馈位的其中一个值表明无线数据信号具有高于最佳范围的信号质量度量。 Preferably, one or more one-bit value of the feedback signal indicates that the wireless data having a signal quality metric above the optimum range. 当反馈位具有此值时,要么第二传输功率低于第一传输功率(即,传输设备降低了传输功率),,要么第二数据传输速率高于第一数据传输速率(即,传输设备产生了数据传输速率。)优选情况下有两个反馈位,尽管也可以多一些,也可以少一些。 When the feedback bit having the value or the second transmission power lower than the first transmit power (i.e., transmission equipment reduces the transmission power) ,, or second data transmission rate is higher than the first data transfer rate (i.e., transmission equipment generates the data transfer rate.) There are two feedback bits Preferably, although it may be more, may be less.

优选情况下,两个反馈位的第一组合表明无线数据信号具有高于最佳范围的信号质量度量;优选情况下,两个反馈位的第二组合表明无线数据信号具有最佳范围内的信号质量度量;优选情况下,两个反馈位的第三组合表明无线数据信号具有低于最佳范围的信号质量度量,优选情况下,两个反馈位的第四组合表明,没有提供信号质量信息。 Preferably, a combination of the two feedback bits indicate the first wireless data signal having a signal quality metric above the optimal range; Preferably, a combination of the two feedback bits indicate that the second wireless data signal having a signal within the optimum range of quality metric; Preferably, a combination of the two feedback bits indicate the third data signal having a less than optimal wireless range signal quality metric, Preferably, a combination of the two feedback bits indicate the fourth, did not provide information on the signal quality.

一般来说,优选情况下,一个或多个反馈位表明无线数据信号的信号质量度量是在最佳范围内、高于最佳范围或低于最佳范围。 In general, preferably, the one or more feedback bits indicate the signal quality metric of the wireless data signal is in the optimum range, the optimum range above or below the optimal range.

分别将第一传输功率和第一数据传输速率调整为第二传输功率和第二数据传输速率的过程可能涉及使第二传输功率等于第一传输功率和使第二数据传输速率等于第一数据传输速率。 Respectively, the first transmission power and a first data transfer rate and the second transmission power is adjusted to a second data transfer rate of the second process may involve the transmission power equal to the first transmission power and transmission rate of the second data is equal to the first data transmission rate. 换句话说,如果数据信号处于最佳范围,传输功率和数据传输速率根本不必改变。 In other words, if the data signal is in the optimum range, transmission power and data transfer rates do not have to be changed.

与此部分的标题一致,上述摘要不是本发明的所有特点或实施例的详尽的讨论。 Consistent with the title of this section, the above summary is not all the features or embodiments of the present invention discussed in detail. 在标题为“具体实施方式”的部分可以找到本发明的特点和实施例的比较完整的,虽然不一定是详尽的描述。 In the section titled "Description of Embodiments" part of the features of the present invention can be found and implemented more complete example, although not necessarily exhaustive description.

附图说明 Brief Description

通过参考下列详细描述并参考附图,可以对本发明和其中的许多优点有一个比较完整的认识。 By reference to the following detailed description with reference to the accompanying drawings, and the invention it can present a number of advantages which have a more complete understanding. 在这些图形中,类似的参考数字在整个视图中表示完全相同或对应的部分。 In these figures, like reference numerals designate identical or corresponding parts throughout the views.

图1是针对计算机通信体系结构的OSI标准的方框图;图2是针对计算机通信体系结构的IEEE 802标准的方框图;图3是无线网络的方框图;图4是图3的无线网络中的设备或控制器的方框图;图5显示了根据本发明的一个实施例的在争用自由时段过程中具有保证时隙的一系列超帧的示范性结构;图6是图3的网络的子集的方框图,包括根据本发明的优选实施例的辅助无线链路连接设备和接收设备;图7是根据本发明的优选实施例的数据包和ACK帧的流程图;以及图8是根据本发明的另一个优选实施例的数据包和ACK帧的流程图。 Figure 1 is a block diagram for the OSI standard computer communications architecture; Figure 2 is a block diagram for computer communications IEEE 802 standard architecture; Figure 3 is a block diagram of a wireless network; Fig. 4 is a wireless network 3 of the device or control block diagram of the device; Figure 5 shows a series of slots has guaranteed an exemplary super-frame structure in contention during free periods in accordance with one embodiment of the present invention; Figure 6 is a block diagram of a network of sub-sets of Figure 3, It includes an auxiliary wireless link connection device and a receiving device according to a preferred embodiment of the invention; Fig. 7 is a flowchart of data packets and ACK frame according to a preferred embodiment of the present invention; and Figure 8 is another preferred according to the invention flowchart of the data packet and ACK frames implemented.

具体实施方式 DETAILED DESCRIPTION

下面将描述本发明的优选实施例。 The following description of the preferred embodiment of the present invention. 尽管这里是在WPAN(或微型网络)的上下文中描述实施例的,但是,应该理解,本发明也适用于其他带宽将在多个用户之间共享的环境,例如,无线局域网(WLAN)或任何其他相应的无线网络。 Although the embodiment described herein is a WPAN (or micro network) context, however, it should be understood that the present invention is also applicable to other bandwidth shared among multiple users environment, e.g., a wireless local area network (WLAN) or any other appropriate wireless network.

图5显示了根据本发明的优选实施例的数据传输方案500,其中,信息通过网络进行传输,信息包括多个MAC超帧505,每一个超帧505都包括保证时隙(GTS)。 Figure 5 shows a data transmission scheme according to a preferred embodiment of the present invention 500, wherein the information transmitted through the network, information including a plurality of MAC super-frames 505, each superframe 505 includes guaranteed time slots (GTS). 优选情况下,超帧505是设定的长度,以允许网络中的各个设备与网络中的网络控制器或其他设备进行协调。 Preferably, the super-frame length 505 is set to allow the network to the various devices in the network coordination network controller or other devices.

如图5所示,数据传输方案500包括跨网络300在时间上传输连续的超帧505。 As shown in Figure 5, comprises a data transmission scheme 500 in time across the network transport 300 consecutive superframes 505. 每一个超帧505都包括信标510、可选争用访问时段515,以及争用自由时段520。 Each superframe 505 includes a beacon 510, optional contention access period 515, and a contention free period 520. 争用自由时段520可以包括一个或多个管理时隙(MTS)525和一个或多个保证时隙(GTS)530。 Contention free period 520 may include one or more management time slots (MTS) 525 and one or more guaranteed time slots (GTS) 530.

在优选实施例中,有多少个主要和辅助无线链路330和340,就有多少保证时隙530。 In a preferred embodiment, the number of primary and secondary wireless links 330 and 340, there are many guaranteed slot 530.

然而,这可能会在其他实施例中变化。 However, this may vary in other embodiments. 保证时隙530的数量可能会比设备320的数量多,也可能比设备320的数量少。 To ensure that the number of slots 530 may be more than 320 the number of devices, it may be less than 320 the number of devices. 在此情况下,控制器310将指定设备320应该如何使用可用保证时隙530。 In this case, the controller 310 specifies how to use the available equipment 320 530 guaranteed slots.

控制器310使用信标515协调将单个设备320调度到它们相应的保证时隙530的过程。 Controller 310 using a beacon device 320 515 individual scheduling coordination to ensure their corresponding slots 530 of the process. 在信标时间段510中,所有设备320都倾听控制器310。 Beacon period 510, 320 are all devices listen controller 310. 每一台设备320将接收零或多个保证时隙530,通知每一个开始时间,以及从信标时间段510的过程中从控制器310的持续时间。 Each device 320 will receive zero or more guaranteed time slots 530, notify each start time, and from the process of beacon period 510 from the duration of the controller 310. 信标510中的信道时间分配(CTA)字段包括开始时间、数据包持续时间、源设备ID,以及目标设备ID。 Time allocation channel beacon 510 (CTA) field includes a start time, the duration of the data packet, the source device ID, and the target device ID. 结果,每一台设备都知道何时传输以及何时接收。 As a result, each device knows when to transmit and when to receive. 在所有其他时间,设备320可能停止监听,并进入省电模式。 At all other times, the device 320 may stop listening, and enter power-saving mode. 因此,使用信标时间段510来协调设备320的传输和接收。 Thus, using a beacon period 510 to coordinate transmission and reception device 320.

网络可以通过可选争用访问时段515、管理时隙525或两者在控制器310和各个设备320之间传递控制和管理信息。 Network can access period 515, 525, or both management slots between the controller 310 and each device 320 passes control and management information via optional dispute. 特定的实现方式将判断使用哪一个特定选项:可以包括争用访问时段515、一个或多个管理时隙525或两者的某些组合。 Particular implementation will determine which one to use specific options: You can include a contention access period 515, one or more management time slots 525, or some combination of both.

管理时隙525可以是其中信息从控制器310向设备320发送的下行链路时隙,也可以是其中信息从设备320发送到控制器310的上行链路时隙。 Wherein slot 525 can be managed from the controller 310 to the downlink time slot transmitted by the device 320, wherein the information may be transmitted from the device 320 to the controller 310 of the uplink time slot. 在此优选实施例中,每个超帧使用两个管理时隙525,一个上行链路和一个下行链路,尽管其他实施例可以选择不同数量的管理时隙和上行链路和下行链路的组合。 In this preferred embodiment, each superframe management using two time slots 525, an uplink and a downlink, although other embodiments may select a different number of management time slots and uplink and downlink combination.

如果希望将一台新设备320添加到网络300中,它请求在可选争用访问时段330或其中一个管理时隙525中从控制器310进入。 If you want to add a new device to the network 300 320, which requests an optional contention access period 330 or one of the administration into the slot 525 from the controller 310. 如果特定设备320没有必要在可选争用访问时段515或管理时隙525期间与控制器310协调,则该设备320可以在可选争用访问时段515或管理时隙525期间。 If a particular device 320 is not necessary in the alternative contention coordination with the controller 310 or 515 during the access period management slot 525, the device 320 may in alternative dispute management during the access period 515 or 525 slots available. 在此情况下,该设备320甚至不必在可选争用访问时段515或管理时隙525倾听控制器310,并可以进入省电模式。 In this case, the device 320 does not even have the optional contention access period 525 515 or management slots listen controller 310, and can enter the power saving mode.

然后,单个设备在争用自由时段340传输数据包。 Then, a single device in the contention free period 340 transport packets. 设备320使用指派给它们的保证时隙530向其他设备(如果控制器310也是网络300内的设备320)传输数据包535。 Device 320 assigned to them to ensure that the slot 530 to other devices (if the device controller 310 is network 300. 320) 535 transport packets. 每一台设备320可以发送一个或多个数据包535,并可以从接收设备320请求即时确认(ACK)帧540,指出数据包成功地接收,或可以请求延迟的(组)确认。 Each device 320 may transmit one or more packets 535, and may request immediate acknowledgment (ACK) frame 540 from the receiving device 320, it pointed out that the data packet is successfully received, or may request a delay of (group) to confirm. 如果请求即时的ACK帧540,则传输设备320应该分配保证时隙530中的足够的时间,以允许ACK帧540到达。 If immediate ACK request frame 540, the transmission device 320 should be allocated guaranteed time slot 530 of time sufficient to allow the ACK frame 540 arrives.

在此实施例中,保证时隙530被显示为具有多个数据包535和关联的ACK帧540。 In this embodiment, guaranteed time slots 530 are shown as having a plurality of data packets 535 and 540 associated with the ACK frame. 一般来说,在数据包535和ACK帧540之间、在最后的确认540和保证时隙530的结束之间还有延迟期545。 Generally, between 535 and ACK packet frame 540, 540 and in the final confirmation to ensure there is a delay between the time slot ends 530 of 545.

由于每一个特定设备320都从在信标时间段510中接收到的信息中知道其传输开始时间和持续时间,因此,每一台设备320都可以保持沉默,直到轮到它进行传输。 Since each particular device 320 knows its transmission start time and duration from the received beacon period information 510, and therefore, each device 320 can remain silent until its turn to transmit. 此外,给定设备320不必在其中没有指派它传输或接收的任何保证时隙时间段530中监听,并可以进入省电模式。 In addition, given the device 320 does not have to assign any guarantee in which no time slot 530 which transmits or receives the monitor, and you can enter a power saving mode. 由于对应于每一个保证时隙530的时间段完全由控制器310在信标时间段510中进行协调,单个设备320知道何时不监听。 Since corresponding to each guarantee period slot 530 is fully coordinated by the controller 310 in the beacon period 510, a single device 320 knows when not to listen.

此实施例中显示的保证时隙530可以是不同大小。 Guaranteed time slot 530 shown in this embodiment can be of different sizes. 保证时隙530的开始时间和持续时间由控制器310确定,并在争用访问时段330的过程中发送到设备320或其中一个管理时隙525。 Guaranteed slot start time and duration 530 is determined by the controller 310, and the contention access period 330 in the process of transmission to the management device 320 or one of the slot 525.

在每一个保证时隙530中,关联的设备320以特定功率电平和数据速率传输其数据包535。 In each guaranteed time slot 530, the device 320 is associated with a specific power level and data rate transmits its data packet 535. 主要选择这些传输参数以确定数据包535是否成功地传输到接收设备,并且最大化数据传输速度和最小化功耗和干扰。 Major choose these transmission parameters 535 to determine whether the data packet successfully transmitted to the receiving device, and maximize data transfer speed and minimize power consumption and interference. 在理想的情况下,数据包535以尽可能最低的功率和尽可能高的速度进行传输,以保证成功,而确保数据成功地传输,以便最小化信道时间使用。 In the ideal case, the packet 535 at the lowest possible power and transmission speed as high as possible in order to ensure success, and to ensure the successful transmission of data in order to minimize the use of channel time. 在一个实施例中,传输设备320知道当它从接收设备320接收到ACK帧540时,数据包535成功地传输。 In one embodiment, the transmission device 320 to know when it is received from the receiving device 320 to the ACK frame 540, 535 successfully transmitted data packet.

图6是网络300的子集的方框图,包括由辅助无线链路340连接设备322和接收设备324。 Figure 6 is a block diagram of a subset of the network 300, including a wireless link 340 is connected by the auxiliary equipment 322 and the receiving apparatus 324. 虽然没有显示,传输设备322和接收设备324两者都通过主无线链路330连接到控制器310。 Although not shown, the transmission device 322 and receiving device 324 are both connected to the controller 310 via primary wireless link 330. 此外,如果其中一个设备322、324是控制器,也是设备,则它们之间的主无线链路330可以用于进行这种传输。 In addition, if one of the devices 322, 324 is the controller, the device also, the primary wireless link 330 between them can be used for this transmission.

如图6所示,传输设备322向接收设备324发送数据包535,如果接收设备324成功地接收到数据包535,那么它向传输设备324发送ACK帧540。 As shown in Figure 6, the transmission device 322 transmits data packet 535 to the receiving apparatus 324, if the receiving device 324 successfully received the data packet 535, then it transmits an ACK frame to the transmission equipment 540 324. 如果接收设备324没有成功地接收到数据包535,则不发送ACK帧540。 If the receiving device 324 does not successfully receive the data packet 535, 540 is not the ACK frame transmitted.

图7是根据本发明的优选实施例传输数据包535和ACK帧540的流程图。 Figure 7 is a flow chart of the present invention preferably ACK frames 535 and 540 cases of transmission of data packets implemented. 如图7所示,传输设备322从将数据包535传输到接收设备324开始。 As shown in Figure 7, the transmission device 322 from the packet 535 is transmitted to the receiving device 324 starts. (步骤110)此传输是通过辅助无线链路340进行的,除非两台设备中的一台设备也是控制器,在这种情况下,可以通过主无线链路330来进行。 (Step 110) this transfer is assisted by a wireless link 340, unless the two devices in one device is a controller, in this case, it can be a primary wireless link 330 to carry out.

然后,接收设备324判断它是否正确地接收到数据包535。 Then, the receiving apparatus 324 determines whether the data packet correctly received 535. (步骤720)如果接收设备324正确地接收到数据包535,则它将ACK帧540发送到传输设备322。 (Step 720) If the receiving device 324 correctly received the data packet 535, it will send ACK frame 540 to the transmission device 322. (步骤730)如果接收设备324没有正确地接收到数据包535(即,它在规定的时间内没有接收到数据包535),则不发送ACK帧540。 (Step 730) If the receiving device 324 is not properly received data packet 535 (i.e., the data packet 535 is not received within a predetermined period of time it), not sent ACK frame 540. 如此,传输设备322只能直接告诉数据包535已经传输。 Thus, transmission equipment 322 can only tell the packet 535 has been transferred. 如果某一时间段过去而没有接收到ACK帧540,则它判断数据包535没有传输。 If a certain time has elapsed without receiving the ACK frame 540, it is judged that the packet 535 is not transmitted.

然后,传输设备322以两种不同的方式之一进行,取决于它是否接收到了ACK帧540。 Then, the transmission device 322 in one of two different ways, depending on whether it receives the ACK frame 540. 如果传输设备322接收到ACK帧540,则它知道数据包535以可以接受的功率电平和可以接受的数据传输速率进行了传输。 If the transmission device 322 receives ACK frame 540, it knows that the data packet 535 to an acceptable power level acceptable data transmission rates. 因此,传输设备保留其原始传输功率和数据传输速率,移到下一数据包535,并进入下一操作。 Therefore, transmission equipment retains its original transmit power and data transfer rates to move to the next data packet 535, and proceeds to the next operation. (步骤740)如果在当前保证时隙530中有足够的剩余时间,则此下一操作可以是传输下一数据包535,或可能涉及关闭,直到传输下一超帧505,或向传输设备322指派下一保证时隙530。 (Step 740) if the current time slot 530 to ensure there is enough time remaining, then the next operation may be a transmission of the next data packet 535, or may involve off, until the transmission of the next superframe 505, or to the transmission equipment 322 assigned to the next slot 530 guarantee.

然而,如果没有接收到ACK帧540,则传输设备322没有确认当前数据包535成功地传输,因此必须重新发送。 If, however, does not receive the ACK frame 540, the transmission device 322 does not confirm the current packet 535 successfully transferred, it must be re-sent. 在此情况下,传输设备322保留当前数据包535,可以调整传输功率和数据传输速率以提高信号质量,并进入下一操作。 In this case, the transmission device 322 to retain the current packet 535, you can adjust transmit power and data transfer rates to improve signal quality, and the next operation. (步骤750)如果在当前保证时隙530中有足够的剩余时间,则此下一操作可以是重新传输当前数据包535,或可能涉及关闭,直到重新传输下一超帧505,或向重新传输设备322指派下一保证时隙530,然后重新传输当前数据包535。 (Step 750) if the current time slot 530 to ensure there is enough time remaining, this next operation can be re-transmission of the current packet 535, or may involve off until the re-transmission of the next super-frame 505, or to retransmit Equipment 322 530 assigned to the next slot assurance and re-transmission of the current packet 535.

在此实施例中,如果传输设备322接收ACK帧540,则它只知道数据传输速率和传输功率足够了,但不知道是否比所需要的质量更好。 In this embodiment, if the transmission equipment 322 receives ACK frame 540, the only known data transmission rate and transmission power is sufficient, but I do not know whether it is better than the quality required. 它没有度量以判断数据传输速率是否可以增大或传输功率可以缩小,而数据包535仍成功地传输。 It does not measure to determine whether the data transfer rate can be increased or transmit power can be reduced, while 535 remain successful packet transmission.

传输设备322为了实现最佳传输功率或数据传输速率而可以做到的一件事是增大传输速率和/或降低传输功率,直到它不会从接收设备324接收ACK帧540。 In order to achieve optimum transmission device 322 transmit power or data transmission rate can do one thing it is to increase the transmission rate and / or reduce the transmission power, until it does not receive ACK frame 540 from the receiving apparatus 324. 此时,传输设备322将知道,它在以仍将允许数据包535成功地进行传输的最低功率和最快速率进行传输。 In this case, the transmission device 322 will know that it will allow packets to 535 successful transmission of the lowest power and fastest transmission rate. 然而,将发生随机错误,因此这不是完全确定性的。 However, random errors will happen, so it's not completely deterministic.

然而,使用存在还是不存在ACK帧540作为可以接受的信号的唯一的判断提供了非常粗略化的反馈。 However, the use of the presence or absence of an ACK frame 540 as an acceptable signal only provides a very rough determination of the feedback. 这可能会导致数据传输速度的不必要的损失,因为传输设备322以最佳的较低速度进行传输,或导致功耗增大,因为传输设备322以比最佳信号质量更高的信号质量进行传输。 This can result in unnecessary loss of data transfer speed, because the transmission device 322 to the optimum transmission speed is low, or the power consumption increases, because the transmission device 322 to the best signal quality higher than the signal quality transmission. 尽管这些数量可以改变,但是,只能慢慢地进行。 Although these numbers may vary, however, it can only be carried out slowly.

在其他实施例中,接收设备324中的管理实体440可以收集诸如误码率(BER)、信噪比(SNR)、传输的数据包535的接收到的信号强度指示(RSSI)之类的信号清晰度信息或其他信号质量度量。 In other embodiments, the receiving device 324 in the management entity 440 may collect a signal such as a bit error rate (BER), signal to noise ratio (SNR), transmitted data packets received signal strength indicator 535 (RSSI) or the like definition information or other signal quality metrics. 然后,接收设备324可以将此信号清晰度信息传回传输设备322,在此,传输设备322中的管理实体440可以处理信号清晰度信息以调整数据传输速度或传输功率。 Then, the receiving apparatus 324 can use this information back to the signal resolution transmission apparatus 322, here, in the transmission apparatus 322 management entity 440 may process the signal definition information to adjust the data transmission rate or transmission power.

或者,设备可以发送建议的速率和功率电平变化,如果反馈位的数量足以传递该信息。 Alternatively, the device can send the proposed rate and the change in power level, if the number of feedback bits sufficient to pass the information.

但使用诸如BER、SNR或RSSI之类的度量将需要较慢的反馈,因为必需的度量必须由接收设备324进行计算,以一个单独的、比较长的数据包从接收设备324传输到传输设备322,然后由传输设备进行处理,以调整信号强度和数据传输速率。 But the use of such measure BER, SNR or RSSI such feedback would require slower because the necessary measures must be evaluated by the receiving device 324, with a single, relatively long data packet from the receiving device 324 is transmitted to the transmission equipment 322 and then processed by the transmission equipment to adjust signal strength and data transfer rate. 此外,度量必须在可以连接到网络的所有设备中进行标准化。 In addition, measures must be standardized in all devices can connect to the network. 对于诸如SNR和RSSI之类的度量,这可能比较困难,导致实现方式的复杂化。 For a measure such as SNR and RSSI and the like, it may be more difficult, leading to a complicated way.

在另一个实施例中,反馈信息被放进直接的ACK帧540中。 In another embodiment, the feedback information is placed directly in ACK frame 540. 在下面描述的优选实施例中,使用了两位反馈,虽然也可以使用其他的反馈位数量,以达到较大的或较小的反馈粒度。 In the preferred embodiment described below, the use of two feedback, although it could use other feedback bit number, in order to achieve a greater or lesser granularity feedback.

如表1所示,具有两个反馈位的实施例允许相对于信号质量有四个单独的反馈响应。 As shown in Table 1, the embodiment has two feedback bits allow the signal quality with respect to four separate feedback response. 此外,不管使用多少反馈位,如果传输设备接收ACK帧540,那么,信号处于足以以满意的方式进行传输强度和数据传输速度。 In addition, no matter how much feedback bit, if the transmission device receives ACK frame 540, then the signal is carried out in a satisfactory manner sufficient transmission strength and data transfer speeds. 如果不,那么,传输设备322可能没有接收到ACK帧540,并知道相应地增大传输功率或缩小数据传输速度。 If not, then the transmission device 322 may not receive the ACK frame 540, and know a corresponding increase or reduce the transmission power data transmission speed.

在反馈位中,如果两者都是“0”(即,反馈响应为“0”),则接收设备324指出信号质量比较差,传输设备322应该增大传输功率或者缩小数据传输速度。 In the feedback bit, if both are "0" (i.e., the feedback response is "0"), the receiving device 324 stated poor signal quality, the transmission device 322 transmit power should be increased or reduced data transfer rate. 如果第一反馈位是“0”,第二反馈位是“1”(即,反馈响应“1”),则接收设备324指出,信号质量在可以接受的参数内,传输设备322不应该改变传输功率或数据传输速度。 If the first feedback bit is "0", the second feedback bit is "1" (i.e., in response to feedback "1"), the receiving device 324 stated, signal quality within acceptable parameters, transmission equipment 322 should change the transmission power or data transfer speed. 如果第一反馈位是“1 ”,第二反馈位是“0”(即,反馈响应“2”),则接收设备324指出,SNR比所需要的高,传输设备322应该缩小传输功率或增大数据传输速度。 If the first feedback bit is "1", the second feedback bit is "0" (i.e., in response to feedback "2"), the receiving device 324 stated, SNR higher than necessary, the transmission device 322 transmit power should be reduced or increased Large data transfer speed. 最后,如果反馈位两者都为“1”(即,反馈响应为“3”),则接收设备324指出,不提供信号质量反馈。 Finally, if the feedback bits are both "1" (i.e., the feedback response is "3"), the receiving device 324 stated, do not provide the signal quality feedback.

表1:基于ACK的信号质量反馈 Table 1: ACK is based on signal quality feedback

在优选实施例中,接收设备324基于SNR评估信号质量。 In a preferred embodiment, the receiving device 324 based on assessment of signal quality SNR. 然而,其他实施例可以基于诸如BER、RSSI之类的其他标准或其他任何所需要的度量来评估信号质量。 However, other embodiments may be based on such as BER, RSSI and the like other standards, or any other desired metric to evaluate the signal quality.

不管使用什么标准,此设计提供了没有说明如何评估信号质量的有用度量。 No matter what standard, this design provides no explanation of how useful measure to assess signal quality. 相反,它只向传输设备322指出数据传输是否太弱,以致于传输设备322应该增强信号质量,数据传输是否适当,以致于传输设备322应该让信号质量保持相同,或者数据传输是否太强,以致于传输设备322可以降低信号质量。 Instead, it pointed to the transmission equipment 322 data transmission is too weak, so that the transmission equipment 322 should enhance the signal quality, data transmission is appropriate, so that the transmission device 322 so that the signal quality should remain the same, or whether the data transmission is too strong, so that the transmission device 322 can reduce the signal quality.

图8是根据本发明的另一个优选实施例的传输数据包535和ACK帧540的流程图。 Figure 8 is a flow chart of another preferred embodiment of the invention, the transport packets 535 and ACK frame 540 Example embodiment. 如图8所示,传输设备322从将数据包535传输到接收设备324开始。 8, the transmission device 322 from the packet 535 is transmitted to the receiving device 324 starts. (步骤805)此传输是通过辅助无线链路340进行的,除非两台设备中的一台设备也是控制器,在这种情况下,可以通过主无线链路330来进行。 (Step 805) this transfer is assisted by a wireless link 340, unless the two devices in one device is a controller, in this case, it can be a primary wireless link 330 to carry out.

然后,接收设备324判断它是否正确地接收到数据包535。 Then, the receiving apparatus 324 determines whether the data packet correctly received 535. (步骤810)如果接收设备324正确地接收到数据包535,则它将ACK帧540发送到传输设备322。 (Step 810) If the receiving device 324 correctly received the data packet 535, it will send ACK frame 540 to the transmission device 322. (步骤815)如果接收设备324没有正确地接收到数据包535,则不发送ACK帧540。 (Step 815) If the receiving device 324 is not properly received data packet 535, it is not sending ACK frame 540. 这就向传输设备322提供信号质量的第一指示,即,如果传输设备322接收ACK,则信号质量至少处于绝对最小值,而如果某一时间段过去而没有接收到ACK帧540,则信号质量不合适。 This provides a first indication to the transmission apparatus 322 of the signal quality, i.e., if the transmission equipment 322 receives ACK, the signal quality at least at an absolute minimum, and if a certain time has elapsed without receiving the ACK frame 540, then the signal quality inappropriate.

然后,传输设备322以两种不同的方式之一进行,取决于它是否接收到了ACK帧540。 Then, the transmission device 322 in one of two different ways, depending on whether it receives the ACK frame 540. 如果没有接收到ACK帧540,则传输设备322没有确认当前数据包535成功地传输,因此必须重新发送。 If you do not receive the ACK frame 540, the transmission device 322 does not confirm the current packet 535 successfully transferred, it must be re-sent. 在此情况下,传输设备322保留当前数据包535,可以调整传输功率和数据传输速率以提高信号质量(步骤820),并进入下一操作。 In this case, the transmission device 322 to retain the current packet 535, you can adjust transmit power and data transfer rates to improve signal quality (step 820), and proceeds to the next operation. (步骤825)如果在当前保证时隙530中有足够的剩余时间,则此下一操作可以是重新传输当前数据包535,或可能涉及关闭,直到重新传输下一超帧505,或向重新传输设备322指派下一保证时隙530,然后重新传输当前数据包535。 (Step 825) if the current time slot 530 to ensure there is enough time remaining, this next operation can be re-transmission of the current packet 535, or may involve off until the re-transmission of the next super-frame 505, or to retransmit Equipment 322 530 assigned to the next slot assurance and re-transmission of the current packet 535.

然而,如果传输设备322接收到ACK帧540,则它知道数据包535以可以接受的功率电平和可以接受的数据传输速率进行了传输。 However, if the transmission equipment 322 receives ACK frame 540, it knows that the data packet 535 to an acceptable power level acceptable data transmission rates. 然后,它检查反馈位(即,反馈响应)以查看是否应该改变传输功率或数据传输速率。 Then, it checks the feedback bit (i.e., feedback response) to see if it should change the transmission power or data transmission rate. (步骤830)如果反馈响应是“0”,那么,传输信号较差,因此,传输设备调整传输功率或数据传输速率以提高信号质量。 (Step 830) If the feedback response is "0", then the transmission signal is poor, and therefore, transmission equipment to adjust transmit power or data transmission rate to improve signal quality. (步骤835),这可能是当没有接收到ACK帧540时进行的相同类型的调整,或者,也可以是比较适度的变化。 (Step 835), which may not be received when the same type of adjustment performed when an ACK frame 540, or may be a more modest changes.

如果反馈响应是“1”,那么,信号在可以接受的参数范围内,因此,传输设备322保持原始传输功率和数据传输速率。 If the feedback response is "1", then the signal is within the acceptable range of parameters, therefore, to keep the original transmission equipment 322 transmit power and data transfer rate. (步骤840)如果反馈响应是“2”,那么,信号比需要的更强,那么,传输设备调整传输功率或数据传输速率,以在提供适当的信号质量的同时,使用较少的资源。 (Step 840) if the feedback response is "2", then the signal is stronger than needed, then adjust transmission power transmission equipment or data transfer rate to provide adequate signal quality while using fewer resources. (步骤845)如果反馈响应是“3”,那么,不传输有关信号质量的数据。 (Step 845) if the feedback response is "3", then, does not transmit data on the signal quality. 然而,由于传输设备322接收到ACK帧540,则数据包535至少可读,传输设备322可以保留原始传输功率和数据传输速率。 However, since the transmission device 322 receives the ACK frame 540, the packet 535 at least readable, transmission equipment 322 can keep the original transmit power and data transfer rate. (步骤840)。 (Step 840).

或者,如果反馈响应是“3”,传输设备可以在没有其他反馈数据的情况下,参与试错法速率/功率变化。 Or, if the feedback response is "3", transmission equipment in the absence of other feedback data, participation in trial and error rate / power change.

最后,一旦传输设备322对传输功率或数据传输速率进行了必要的变化(如果有的话),则网络300进入下一操作。 Finally, once the transmission equipment 322 pairs of transmit power or data transfer rate necessary changes (if any), the network 300 to the next operation. 如果在当前保证时隙530中有足够的剩余时间,则此下一操作可以是传输下一数据包535,或可能涉及关闭,直到传输下一超帧505,或向传输设备322指派下一保证时隙530。 If the current time slot 530 to ensure there is enough time remaining, this next operation may be a transmission of the next data packet 535, or may involve off until transmission of the next super frame 505, or assignment to the next to ensure that the transmission equipment 322 530 slots.

此实施例中的具体度量和阈值可以对于单个的实现方式有不同的方式,允许设计有巨大的灵活性。 Examples of specific embodiments of this metric and the threshold can have different ways of implementation for a single, allowing great design flexibility. 由于使用了相同的反馈位,不管数据传输标准是多么严格,对于比较严格的数据传输标准,不需要进行任何更改。 Using the same feedback bit, no matter how strict data transmission standards, for the more stringent standard for data transmission, does not require any changes. 在不是十分必要有持续的高数据传输速率和/或低功耗的实现方式中,可以为反馈位将表明信号质量太高的时间设置高阈值。 In the not very necessary to have sustained high data transfer rates and / or low-power implementations for feedback bit it will indicate that the signal quality is set too high a threshold time. 同样,在电池电源或传输速度的顾虑最高的那些实现方式中,可以为反馈位将表明信号质量太高的时间设置下阈值。 Similarly, in the battery power source or the highest transmission speed concerns those implementations, the feedback bit may indicate that the signal quality is too high at the time of setting the threshold value.

此外,此设计不要求SNR或RSSI的标准化,也不要求估计BER。 In addition, this design does not require standardization SNR or RSSI, nor asked to estimate the BER. 通过让接收设备324判断信号质量何时高于所需要的或太低,此设计允许接收设备324基于其自己的标准来作出决定。 To make a decision by the judge to allow the receiver when the device 324 is higher than the desired signal quality or too low, this design allows the receiving device 324 based on their own criteria.

事实上,单个接收设备324的标准可以不必相同,而可以在设备与设备之间不同。 In fact, a single receiving apparatus 324 may not necessarily be the same as the standard, but may be different between the device and the device. 例如,在连接了PDA、计算机、DVD播放器和某些数字扬声器的家庭网络中,与PDA相比,扬声器可以有完全不同的标准集。 For example, the connection of the PDA, computer, DVD player and some digital speaker home network, compared with the PDA, the speaker may have a completely different set of criteria. 由于DVD和扬声器被插入到壁上插座中,电源考虑中可以不必考虑最小化丢失的数据包(因此音乐中有跳跃)。 Because DVD and speakers to be inserted into the wall socket, the power supply can be considered without regard to minimizing the loss of packets (and therefore music has jump). 同样,对于扬声器来说,对于高速低错误率的需要也是较大的,以确保清楚的声音质量。 Similarly, for the speaker, the need for high speed and low error rate is larger, in order to ensure clear sound quality. 这可能会导致在网络将降低数据传输速度或功耗之前的高阈值。 This may cause the network to reduce the high data transfer speed threshold or power before. 相反,您的PDA具有有限的电源,因此,最小化功耗是最优先的选择,对于数据传输,数据包错误是比较容易忍受的。 Instead, your PDA has a limited power supply, therefore, to minimize the power consumption is the most preferred choice for data transmission, packet error is relatively easy to tolerate. 对于短截,可能具有低阈值,接受较低的服务质量,以最大化电池电源。 For stubs, it may have a low threshold, accept a lower quality of service, in order to maximize battery power.

此外,每一个传输设备322都可以独立地判断对反馈将采取什么操作。 In addition, each of the transmission device 322 can independently determine what action will be taken on the feedback. 如有可能,它可以增大或减小信号发射器电源,或它可以增大或减小猝发传输速率,以相应地增大或减少噪声谱密度的每比特能量(Eb/No))))。 If possible, it can increase or decrease the signal transmitter power, or it may increase or decrease the burst transfer rate to a corresponding increase or decrease the noise spectral density of energy per bit (Eb / No)))) .

尽管本申请特别谈到传输设备和接收设备,但是,也应该理解,两者都可以以各自容量进行操作。 Although the application specific reference to transmission and receiving devices, however, it should be understood that both can operate in their respective capacity. 如此,网络中的每一个设备有时可以同时是传输设备和接收设备,既可以产生反馈位,也可以接收反馈位。 Thus, each device in the network can sometimes be transmitting and receiving devices, both generated feedback bit, can receive feedback bit. 同样,控制器也可以作为设备,接收和产生反馈位,并调整其信号质量。 Similarly, the controller can be used as devices to receive and generate feedback bit and adjust its signal quality.

本申请全篇引用了改变传输功率和数据传输速率,以提高或降低信号质量。 Full papers cited in this application to change the transmission power and data transfer rates to increase or decrease the signal quality. 具体怎么做可能会有所变化,但是,仍在本发明的优选实施例内。 Specifically how to do may vary, however, still preferred embodiment of the invention in the example. 特定的实现方式将依据系统或设备标准不同而不同。 The implementation will be based on specific system or equipment standards vary. 例如,信号质量可以通过降低数据传输速度或提高传输功率。 For example, the signal quality by reducing the data transmission rate or transmission power increase. 同样,信号质量可以通过降低数据传输速度或降低传输功率。 Similarly, the signal quality by reducing the data transmission rate or reduce the transmission power.

正如上文所指出的,在其他实施例中,可以使用更大或更小位数的位作为反馈位。 As noted above, in other embodiments, it may be larger or smaller number of bits of bit as the feedback bit. 如果只使用一个位,则它可以指出信号质量是否可以降低。 If only one bit, it can indicate whether the signal quality can be reduced. 如果使用三个或多个位,它们可以指出,必须将信号质量增强达到什么程度或可以降低到什么程度,带有多个级别功率/数据传输速度调节。 If three or more bits, which may be noted, will enhance the signal quality must be reduced to what extent or to what extent, with multiple levels of power / data transmission speed adjustment. 或者,反馈位可以提供诸如建议的数据传输速率或功率的建议的变化之类的其他信息。 Alternatively, the feedback bits can provide additional information such as the proposed data transmission rate or power of the proposed change and the like.

此外,虽然这里说明了使用即时确认(ACK)帧的实施例,但是,其他实施例可以使用延迟的ACK帧。 In addition, although the embodiments described herein using instant acknowledgment (ACK) frame, however, other embodiments may use a delayed ACK frame. 在此情况下,在接收设备发送延迟的ACK帧之前,传输设备将发送多个数据包。 In this case, before receiving an ACK frame transmission delay device, the transmission device sends multiple packets. 此延迟的ACK帧将提供多个数据包的确认信息,并可以包括反馈位以给发射器提供关于信号质量的信息。 ACK frame delay will provide confirmation of this information from multiple data packets, and may include feedback to the transmitter site to provide information about the signal quality.

显然,根据上述原理,本发明的许多修改和变化也是可以的。 Apparently, according to the principles described above, many modifications and variations of the present invention are possible. 因此,应该理解,在附加的权利要求范围内,本发明可以以这里所描述的方法之外的方法进行实施。 Therefore, it should be understood that, within the scope of the appended claims, the present invention may be a method other than the method described herein will be implemented.

Referenced by
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CN101405979B19 Mar 20078 May 2013皇家飞利浦电子股份有限公司信号质量报告
CN102648597A *8 Dec 201022 Aug 2012高通股份有限公司Method and apparatus for multicast block acknowledgement
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Classifications
International ClassificationH04L12/28, H04L12/56, H04W24/00, H04L1/00, H04B7/005, H04W28/22, H04W52/26, H04W52/20, H04W52/50, H04W52/24
Cooperative ClassificationH04L1/0026, H04L1/1671, H04W24/00, H04W52/50, H04W52/267, H04W52/20, H04W52/24, H04L1/0001, H04L1/0002, H04W28/22
European ClassificationH04L1/16F15, H04L1/00A9B, H04W28/22, H04L1/00A, H04W52/26R
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