CN118714586A - Method and system for configuring access points within a communication network - Google Patents
Method and system for configuring access points within a communication network Download PDFInfo
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- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
本公开涉及一种用于配置通信网络内的接入点的方法,包括配置通信网络内的多个接入点中的每个,以在多个信道中的每个上与多个客户端设备中的每个进行通信。获得指示多个客户端设备中的每个的针对多个天线模式中的每个和多个信道中的每个的信道质量指示符的数据;至少部分地基于指示信道质量指示符的数据,将多个信道中的一个确定为为多个接入点中的每个选择的信道,将多个天线模式中的一个确定为为自适应天线选择的天线模式,确定多个客户端设备中的一个或多个优先客户端设备;配置多个接入点中的每个,以在所选择的信道上与一个或多个优先客户端设备进行通信;以及配置多个接入点中的每个上的自适应天线以在所选择的天线模式下操作。
The present disclosure relates to a method for configuring access points within a communication network, including configuring each of a plurality of access points within the communication network to communicate with each of a plurality of client devices on each of a plurality of channels. Obtaining data indicating a channel quality indicator for each of a plurality of antenna modes and each of a plurality of channels for each of a plurality of client devices; determining one of a plurality of channels as a selected channel for each of a plurality of access points, determining one of a plurality of antenna modes as an antenna mode selected for an adaptive antenna, determining one or more priority client devices among a plurality of client devices based at least in part on the data indicating the channel quality indicator; configuring each of a plurality of access points to communicate with the one or more priority client devices on the selected channel; and configuring the adaptive antenna on each of the plurality of access points to operate in the selected antenna mode.
Description
本申请是于2018年9月12日提交的申请号为“201880059485.8”、发明名称为“用于通信系统中的信道选择管理的自适应天线”的发明专利申请的分案申请。This application is a divisional application of the invention patent application with application number "201880059485.8" filed on September 12, 2018 and invention name "Adaptive antenna for channel selection management in communication system".
优先权要求Priority claim
本申请要求享有于2017年9月13日提交的标题为“Adaptive Antenna forChannel Selection Management in Communications Systems”的美国专利申请No.15/703,794的优先权权益,出于所有目的通过引用将其并入本文。This application claims the benefit of priority to U.S. Patent Application No. 15/703,794, filed on September 13, 2017, entitled “Adaptive Antenna for Channel Selection Management in Communications Systems,” which is incorporated herein by reference for all purposes.
技术领域Technical Field
本发明大体上涉及无线通信领域;并且更具体地,涉及一种用于无线局域网(WLAN)和其他多节点通信系统中的改进的信道选择管理的自适应天线系统。The present invention relates generally to the field of wireless communications; and more particularly, to an adaptive antenna system for improved channel selection management in wireless local area networks (WLANs) and other multi-node communication systems.
背景技术Background Art
WLAN已在世界上大多数地区的家庭和企业中被采用,具有能够进行WLAN接收的诸如智能手机、笔记本电脑和平板电脑的众多客户端设备。最近,WLAN已被用于高吞吐量应用,诸如用于建筑物内应用的视频流。这些设备要求RF无线电和天线系统具有良好的性能,以确保高质量的运行;并且这些设备增加了在企业、公寓楼和社区中遇到的WLAN天线系统和RF信令的数量。为了支持更多数量的用户和视频应用而需要增加的数据速率,这表明了需要在发送的信号中进行更高阶的调制,其进而又对提高统称为“度量(metrics)”的信噪比(Signal to Noise Ratio,SNR)或信干噪比(Signal to Interference plus NoiseRatio,SINR)的水平以支持更高的调制速率提出了要求。具体地,将需要更好地控制来自与接入点相关联的天线系统的辐射场,以针对旨在提供更高吞吐量和更可靠链路的天线系统提供更好的通信链路质量。WLANs have been adopted in homes and businesses in most parts of the world, with numerous client devices such as smartphones, laptops, and tablets capable of WLAN reception. More recently, WLANs have been used for high throughput applications, such as video streaming for in-building applications. These devices require good performance from the RF radio and antenna systems to ensure high quality operation; and these devices increase the number of WLAN antenna systems and RF signaling encountered in businesses, apartment buildings, and communities. The increased data rates required to support a greater number of users and video applications dictate the need for higher order modulation in the transmitted signal, which in turn requires an increase in the level of signal-to-noise ratio (SNR) or signal-to-interference plus noise ratio (SINR), collectively referred to as "metrics", to support higher modulation rates. Specifically, better control of the radiated field from the antenna system associated with the access point will be required to provide better communication link quality for antenna systems designed to provide higher throughput and more reliable links.
由于电磁(EM)信号以WLAN频带在建筑物内传播的范围限制,在网络中配置多个接入点以提供连续的无线服务正变得更加普遍。WLAN内部漫游涉及一种情况,其中无线设备在Wi-Fi网络内将连接从一个接入点移动到另一个接入点,因为来自原始接入点的信号强度变得太弱。无线设备可以包括周期性地监视可以提供更好连接的替代接入点的存在、并使自身与具有更强信号的接入点重新关联的算法。然而,由于无线电传播的复杂性,很难对与发送器相关的给定区域来预测Wi-Fi信号强度。在许多情形下,通信中涉及的发送器和接收器之间的视线被诸如墙壁、树木和其他物体的障碍物阻挡或遮盖。每次信号反弹都可能引起相移、时间延迟、衰减和失真,这些中的每一个最终会在接收天线处产生干扰。无线链路中的破坏性干扰是有问题的,并且会导致设备性能的下降。信号质量度量通常用于评估信号的质量。如上面所介绍的,这种质量度量的示例可以包括信噪比(SNR)、信干噪比(SINR)、接收信号强度指示符(RSSI)、误码率(BER)和各种其他度量,这些称为信道质量指示符(CQI)。Due to the range limitations of electromagnetic (EM) signals propagating within buildings in the WLAN frequency band, it is becoming more common to configure multiple access points in the network to provide continuous wireless service. WLAN internal roaming involves a situation in which a wireless device moves a connection from one access point to another within a Wi-Fi network because the signal strength from the original access point becomes too weak. The wireless device may include an algorithm that periodically monitors the presence of alternative access points that can provide better connections and reassociates itself with an access point with a stronger signal. However, due to the complexity of radio propagation, it is difficult to predict Wi-Fi signal strength for a given area associated with a transmitter. In many cases, the line of sight between the transmitter and the receiver involved in the communication is blocked or obscured by obstacles such as walls, trees, and other objects. Each signal bounce may cause phase shifts, time delays, attenuation, and distortion, each of which ultimately produces interference at the receiving antenna. Destructive interference in a wireless link is problematic and can result in a degradation of device performance. Signal quality metrics are typically used to assess the quality of the signal. As introduced above, examples of such quality metrics may include signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SINR), received signal strength indicator (RSSI), bit error rate (BER), and various other metrics, which are referred to as channel quality indicators (CQIs).
增加Wi-Fi网络中的接入点的数量一般会提供网络冗余,并通过定义较小的小区来支持快速漫游。然而,由于同一区域中有太多设备连接到一个接入点,因此可能会由于干扰而中断Wi-Fi连接和/或降低互联网速度。当在系统中使用多个接入点为建筑物提供WLAN覆盖时,标准技术是为相邻接入点分配不同的信道(频率),以减少接入点之间的干扰。由于在2.4GHz和5GHz WLAN频带处可用的有限频率带宽和一定数量的可用信道,相邻接入点之间能够实现的频率间隔通常不足以消除由于与相邻接入点产生干扰的、一个接入点辐射的频率分量中的信道外滚降(roll-off)。这种干扰通常表现为相邻接入点的接收端口处的SINR降低,这导致能够支持的调制方案减少,并且转换为数据吞吐量的减少。在通常配置有一个或多个天线的无线设备的情况下(这些天线是具有固定辐射图(radiation pattern)(即,一个辐射图)的无源天线),天线系统不能在存在干扰信号时用作改善接入点的SINR的工具。这种情况导致次优流量,而未优化提供给用户的服务质量(QOS)。Increasing the number of access points in a Wi-Fi network generally provides network redundancy and supports fast roaming by defining smaller cells. However, because too many devices are connected to one access point in the same area, Wi-Fi connections may be interrupted and/or Internet speeds may be reduced due to interference. When multiple access points are used in a system to provide WLAN coverage for a building, the standard technique is to assign different channels (frequencies) to adjacent access points to reduce interference between access points. Due to the limited frequency bandwidth and a certain number of available channels available at the 2.4GHz and 5GHz WLAN bands, the frequency spacing that can be achieved between adjacent access points is generally not enough to eliminate the channel roll-off (roll-off) in the frequency component radiated by one access point due to interference with adjacent access points. This interference is usually manifested as a reduction in the SINR at the receiving port of the adjacent access point, which leads to a reduction in the modulation schemes that can be supported and translates into a reduction in data throughput. In the case of wireless devices that are typically configured with one or more antennas (these antennas are passive antennas with a fixed radiation pattern (i.e., one radiation pattern)), the antenna system cannot be used as a tool to improve the SINR of the access point in the presence of interfering signals. This situation results in suboptimal traffic flow without optimizing the quality of service (QOS) provided to the users.
共同拥有的专利:US 7,911,402;US 8,362,962;US 8,648,755;和US 9,240,634;这些专利中的每一个的全部内容通过引用合并于此,每个专利都描述了波束操纵(steering)技术,其中单个天线能够生成多个辐射模式,其中单个天线在多个可能模式的每一个中呈现出不同的辐射图。这是通过使用偏置寄生元件来实现的,该偏置寄生元件随着寄生上的无功负载(reactive load)的变化而改变驱动天线上的电流分布。生成多个模式的该波束操纵技术被称为“模态(modal)天线技术”,并且被配置为以这种方式改变辐射模式的天线在这里将被称为“模态天线”。该天线架构解决了与移动设备和小型商用通信设备中的体积匮乏相关联的问题,以适应用来实现更多的传统波束操纵硬件所需的天线阵列。Commonly owned patents: US 7,911,402; US 8,362,962; US 8,648,755; and US 9,240,634; each of which is incorporated herein by reference in its entirety, each of which describes a beam steering technique in which a single antenna is capable of generating multiple radiation patterns, wherein the single antenna exhibits a different radiation pattern in each of the multiple possible modes. This is accomplished by using biased parasitic elements that vary the current distribution on the driven antenna as a reactive load on the parasitic element varies. This beam steering technique of generating multiple patterns is referred to as "modal antenna technology," and antennas configured to vary radiation patterns in this manner will be referred to herein as "modal antennas." This antenna architecture addresses issues associated with the lack of volume in mobile devices and small commercial communications devices to accommodate antenna arrays required to implement more traditional beam steering hardware.
这种模态天线技术可以在WLAN系统中的接入点和客户端设备中实现,并用于针对这些网络改善通信链路性能。在需要多用户操作的链路的接入点侧,优化接入点中的天线的辐射图的能力将是优化链路性能的关键。和与接入点一起使用的无源天线相比,通过对模态天线的多个辐射模式进行采样并选择为每个客户端提供改善的系统增益的模式,模态天线可以在客户端设备的方向上提供改善的天线增益性能。来自模态天线的增加的天线系统增益将转化为信噪比(SNR)的增加,进而将转化为能够支持的更高阶的调制方案以用于更高的数据吞吐量。This modal antenna technology can be implemented in access points and client devices in WLAN systems and used to improve communication link performance for these networks. On the access point side of a link that requires multi-user operation, the ability to optimize the radiation pattern of the antenna in the access point will be key to optimizing link performance. By sampling multiple radiation patterns of the modal antenna and selecting a pattern that provides improved system gain for each client, the modal antenna can provide improved antenna gain performance in the direction of the client device compared to the passive antenna used with the access point. The increased antenna system gain from the modal antenna will translate into an increase in the signal-to-noise ratio (SNR), which in turn will translate into higher order modulation schemes that can be supported for higher data throughput.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1示出了单个模态天线的四个辐射图模式。Figure 1 shows four radiation pattern patterns of a single modal antenna.
图2示出了一个通信系统,其包括:网络控制器、包含被标记为“AP1”的第一接入点和被标记为“AP2”的第二接入点的两个接入点、以及无线连接至两个接入点的四个客户端设备。2 shows a communication system including a network controller, two access points including a first access point labeled “ AP1 ” and a second access point labeled “ AP2 ”, and four client devices wirelessly connected to the two access points.
图3示出了三个接入点的信道利用的图,其中三个接入点被标记为“AP1”、“AP2”和“AP3”。FIG. 3 shows a graph of channel utilization for three access points, where the three access points are labeled “ AP1 ,” “ AP2 ,” and “ AP3 .”
图4示出了三个接入点的信道利用的图,其中三个接入点被标记为“AP1”、“AP2”和“AP3”。FIG. 4 shows a graph of channel utilization for three access points, where the three access points are labeled “ AP1 ,” “ AP2 ,” and “ AP3 .”
图5示出了通信系统中的每个接入点的噪声矩阵,其中接入点和一个或多个客户端设备包含自适应天线系统。5 illustrates a noise matrix for each access point in a communication system where the access point and one or more client devices include adaptive antenna systems.
图6示出了用来优化通信系统中的每个接入点或节点的信道选择、以及用于自适应天线的最优主动操纵模式的选择的过程的流程图。6 shows a flow chart of a process for optimizing channel selection for each access point or node in a communication system and selection of an optimal active steering pattern for an adaptive antenna.
图7图示了被标记为“AP1”、“AP2”、“AP3”和“AP4”的四个接入点的信道利用的图。FIG. 7 illustrates a graph of channel utilization for four access points labeled “ AP1 ,” “ AP2 ,” “ AP3 ,” and “ AP4 .”
图8示出了用于分别服务多个客户端设备中的每一个与网络之间的无线通信链路的网络通信系统。FIG8 illustrates a network communication system for separately servicing wireless communication links between each of a plurality of client devices and a network.
具体实施方式DETAILED DESCRIPTION
本公开涉及一种自适应天线系统,其提供可以被采样和选择以改善WLAN和其他通信系统中的通信链路性能的多个辐射模式。该自适应天线系统提供了可以用于优化接入点内的接收器以及在通信系统中实现的其他收发器中的噪声水平的附加参数,以提供进而转化为更高的数据吞吐量的更高的SINR水平、以及在多路径和动态环境中维护通信链路的更高的可靠性。The present disclosure relates to an adaptive antenna system that provides multiple radiation patterns that can be sampled and selected to improve communication link performance in WLAN and other communication systems. The adaptive antenna system provides additional parameters that can be used to optimize the noise level in receivers within access points and other transceivers implemented in the communication system to provide higher SINR levels that in turn translate into higher data throughput, and higher reliability of maintaining communication links in multipath and dynamic environments.
在实施例中,将能够生成多个辐射模式的自适应天线与算法相结合,该算法实现了为预期的通信链路选择最优辐射模式的采样过程。该技术非常适合在其中多个接入点的任务是在特定区域中提供覆盖范围、并且需要解决接入点之间的干扰的WLAN系统中实现。利用改变与接入点一起使用的天线系统的辐射模式的能力,该技术可以用于通过选择降低在相邻节点方向上的信号强度水平的模式,来改善系统中的接入点的SINR水平。这种改变天线系统的辐射模式的能力也影响相邻信道相互干扰的方式。因此,在(i)仅设备、(ii)仅(一个或多个)接入点、或(iii)设备和(一个或多个)接入点两者上使用该技术提供了信道分配过程中的额外自由度,以便最大化整体网络性能。In an embodiment, an adaptive antenna capable of generating multiple radiation patterns is combined with an algorithm that implements a sampling process for selecting the optimal radiation pattern for an intended communication link. The technology is very suitable for implementation in a WLAN system in which the task of multiple access points is to provide coverage in a specific area and interference between access points needs to be resolved. Utilizing the ability to change the radiation pattern of an antenna system used with an access point, the technology can be used to improve the SINR level of an access point in the system by selecting a pattern that reduces the signal strength level in the direction of an adjacent node. This ability to change the radiation pattern of an antenna system also affects the way adjacent channels interfere with each other. Therefore, using this technology on (i) only devices, (ii) only (one or more) access points, or (iii) both devices and (one or more) access points provides additional degrees of freedom in the channel allocation process to maximize overall network performance.
在一个实施例中,包括两个节点(接入点)的通信系统被用于在限定的区域中提供无线通信,其中每个节点包含收发器和天线系统。这种类型的系统的示例是由两个接入点(节点)组成以提供建筑物内无线覆盖的WLAN系统。第一接入点在信道A上运行,而第二接入点在信道B上运行,其中信道A和信道B占据频谱的不同部分。系统中的第一接入点包含自适应天线系统,该自适应天线系统被定义为能够生成多个辐射模式(能够进行波束操纵或零操纵)的天线,而第二接入点包含具有固定辐射图的无源天线系统。自适应天线系统的每个辐射模式具有与其相关联的辐射图,其中这些辐射图关于辐射图形状和/或极化特性在模式之间变化。用于自适应天线的候选天线是模态天线,该模态天线能够从单个端口天线生成多个辐射图。网络控制器被实现为命令和控制接入点的网络。算法驻留在网络控制器中的计算机中,该算法的任务是控制第一接入点中的自适应天线系统的辐射模式,例如,通过打开/关闭或调整诸如开关、可调电容器、可调电感器等的有源组件的电抗。测量系统中的两个接入点与每个客户端之间的通信链路质量,并将其存储在存储器中。利用自适应天线实现的算法提供了勘测信道质量指示符(CQI)度量(诸如信干噪比(SINR)、接收信号灵敏度指示符(RSSI)、调制编码方案(MCS)或从通信系统的基带处理器获得的类似度量)的能力,以提供基于CQI对辐射图进行采样、并作出关于在最优辐射图或模式下运行的决策的能力。当第一接入点与系统中的客户端通信时,可以通过为与第一接入点相关联的自适应天线系统选择辐射模式来执行优化,以改善第二接入点的SINR。尽管两个接入点在不同的信道上运行,但是在频率响应中会发生有限数量的滚降,其中来自第一接入点的驻留的带外频率分量耦合至第二接入点的接收端口中。例如,通过针对连接到该接入点的所有设备的不同天线模式来选择另一信道并监视先前描述的诸如SINR等的信号质量度量,可以由第一接入点执行优化。In one embodiment, a communication system comprising two nodes (access points) is used to provide wireless communication in a defined area, wherein each node contains a transceiver and an antenna system. An example of this type of system is a WLAN system consisting of two access points (nodes) to provide wireless coverage within a building. The first access point operates on channel A, while the second access point operates on channel B, wherein channel A and channel B occupy different parts of the spectrum. The first access point in the system contains an adaptive antenna system, which is defined as an antenna capable of generating multiple radiation patterns (capable of beam steering or zero steering), while the second access point contains a passive antenna system with a fixed radiation pattern. Each radiation pattern of the adaptive antenna system has a radiation pattern associated with it, wherein these radiation patterns vary between patterns with respect to radiation pattern shape and/or polarization characteristics. Candidate antennas for adaptive antennas are modal antennas, which are capable of generating multiple radiation patterns from a single port antenna. The network controller is implemented as a network of command and control access points. An algorithm resides in a computer in a network controller and is tasked with controlling the radiation pattern of an adaptive antenna system in a first access point, for example, by turning on/off or adjusting the reactance of active components such as switches, adjustable capacitors, adjustable inductors, etc. The quality of the communication link between the two access points in the system and each client is measured and stored in a memory. The algorithm implemented with the adaptive antenna provides the ability to survey a channel quality indicator (CQI) metric such as a signal-to-interference-plus-noise ratio (SINR), a received signal sensitivity indicator (RSSI), a modulation coding scheme (MCS), or a similar metric obtained from a baseband processor of the communication system to provide the ability to sample the radiation pattern based on the CQI and make decisions about operating in an optimal radiation pattern or mode. When the first access point is communicating with clients in the system, an optimization may be performed by selecting a radiation pattern for the adaptive antenna system associated with the first access point to improve the SINR of the second access point. Although the two access points operate on different channels, a finite amount of roll-off occurs in the frequency response where resident out-of-band frequency components from the first access point couple into the receive port of the second access point. For example, optimization may be performed by the first access point by selecting another channel for different antenna modes for all devices connected to the access point and monitoring the signal quality metrics such as SINR described previously.
当选择为预期客户端提供服务的自适应天线的模式,同时将较少的功率耦合至第二接入点的接收端口时,会发生SINR的改善。结果将是系统中的第二接入点与客户端之间建立的通信链路的改善的吞吐量、范围和容量。When the mode of the adaptive antenna is selected to serve the intended client while coupling less power to the receive port of the second access point, an improvement in SINR will occur. The result will be improved throughput, range and capacity of the communication link established between the second access point and the client in the system.
在另一实施例中,实现了如前所述的通信系统,其中自适应天线系统并入第一接入点和第二接入点两者中。驻留在网络控制器中的计算机中的算法的任务是控制第一和第二接入点中的自适应天线系统的辐射模式。第一接入点在信道A上运行,而第二接入点在信道B上运行,其中信道A和信道B占据频谱的不同部分。当接入点与系统中的客户端通信时,通过分别选择与第一接入点和第二接入点中的每一个相关联的自适应天线系统的辐射模式,可以执行优化以改善第一接入点和第二接入点的SINR。In another embodiment, a communication system as previously described is implemented, wherein an adaptive antenna system is incorporated into both a first access point and a second access point. The task of an algorithm residing in a computer in a network controller is to control the radiation pattern of the adaptive antenna system in the first and second access points. The first access point operates on channel A, while the second access point operates on channel B, wherein channel A and channel B occupy different portions of the frequency spectrum. When the access points communicate with clients in the system, an optimization may be performed to improve the SINR of the first access point and the second access point by selecting the radiation pattern of the adaptive antenna system associated with each of the first access point and the second access point, respectively.
在另一实施例中,在通信系统中部署了多个接入点,其中这些接入点中的多个包含自适应天线系统。驻留在网络控制器中的算法的任务是控制网络中的所有自适应天线系统,目标是当接入点和客户端之间建立了通信链路时,通过选择从一个接入点到相邻接入点耦合最少的辐射模式来增加系统中所有接入点的接收端口中的SINR。In another embodiment, a plurality of access points are deployed in a communication system, wherein a plurality of the access points include adaptive antenna systems. An algorithm resident in a network controller is tasked with controlling all adaptive antenna systems in the network with the goal of increasing the SINR in the receive ports of all access points in the system by selecting a radiation pattern with minimal coupling from one access point to a neighboring access point when a communication link is established between an access point and a client.
在另一实施例中,多个接入点以及多个客户端均配置有自适应天线系统,以在网络中建立的通信链路的两端上提供多个辐射模式。驻留在网络控制器中的算法的任务是控制网络中的所有自适应天线系统,目标是当接入点和客户端之间建立了通信链路时,通过选择从一个接入点到相邻接入点耦合最少的辐射模式来增加系统中所有接入点的接收端口中的SINR。客户端设备上的自适应天线系统提供了在优化过程中进行调整的附加参数。In another embodiment, multiple access points and multiple clients are configured with adaptive antenna systems to provide multiple radiation patterns at both ends of a communication link established in the network. The algorithm resident in the network controller is tasked with controlling all adaptive antenna systems in the network with the goal of increasing the SINR in the receive ports of all access points in the system by selecting the radiation pattern with the least coupling from one access point to a neighboring access point when a communication link is established between the access points and the clients. The adaptive antenna system on the client device provides an additional parameter that is adjusted during the optimization process.
在又一个实施例中,在通信系统中部署了多个接入点,其中这些接入点中的多个包含自适应天线系统,其中彼此相邻的至少两个接入点在同一信道上运行。驻留在网络控制器中的算法以与前述相同的方式运行,最终结果是当接入点和客户端之间建立了通信链路时,通过选择从一个接入点到相邻接入点耦合最少的辐射模式来改善系统中所有接入点的接收端口中的SINR。In yet another embodiment, a plurality of access points are deployed in a communication system, wherein a plurality of the access points include adaptive antenna systems, wherein at least two access points adjacent to each other operate on the same channel. An algorithm resident in a network controller operates in the same manner as previously described, with the end result being that when a communication link is established between an access point and a client, the SINR in the receive ports of all access points in the system is improved by selecting a radiation pattern that has the least coupling from one access point to an adjacent access point.
在先前提到的实施例中描述的算法被配置为勘测网络中的所有自适应天线系统的辐射模式。测量系统中启用自适应天线的所有接入点与每个客户端之间的通信链路质量,并将其存储在存储器中。利用自适应天线实现的算法提供了勘测诸如信干噪比(SINR)、接收信号灵敏度指示符(RSSI)、调制编码方案(MCS)或从通信系统的基带处理器获得的类似度量之类的信道质量指示符(CQI)度量的能力,以提供基于CQI对辐射图进行采样、并作出关于在最优辐射图或模式下运行的决策的能力。通过为与系统中的接入点和客户端相关联的自适应天线系统选择辐射模式,可以执行优化以改善在网络中的接入点和客户端之间建立的通信链路的SINR。该算法为网络中具有耦合至其的自适应天线系统的每个接入点填充噪声矩阵。对网络中的接入点和客户端之间的每个通信链路的平均噪声执行测量,并将这些噪声值存储在噪声矩阵中。通过算法勘测与网络中的每个接入点关联的噪声矩阵,并为接入点、接入点/客户端对的自适应天线系统选择辐射模式状态,从而使得接入点和客户端内的接收器中的噪声水平分别被最小化。在连续的基础上更新噪声矩阵,以应对传播信道中的变化和接入点处的信道变化。The algorithm described in the previously mentioned embodiment is configured to survey the radiation patterns of all adaptive antenna systems in the network. The quality of the communication link between all access points and each client in the system with adaptive antennas enabled is measured and stored in a memory. The algorithm implemented with adaptive antennas provides the ability to survey channel quality indicator (CQI) metrics such as signal-to-interference-plus-noise ratio (SINR), received signal sensitivity indicator (RSSI), modulation coding scheme (MCS), or similar metrics obtained from the baseband processor of the communication system to provide the ability to sample the radiation pattern based on the CQI and make decisions about operating in the optimal radiation pattern or mode. By selecting a radiation pattern for the adaptive antenna system associated with the access point and client in the system, optimization can be performed to improve the SINR of the communication link established between the access point and the client in the network. The algorithm fills the noise matrix for each access point in the network that has an adaptive antenna system coupled to it. The average noise of each communication link between the access point and the client in the network is measured, and these noise values are stored in the noise matrix. The noise matrix associated with each access point in the network is algorithmically surveyed and the radiation pattern states are selected for the adaptive antenna systems of the access points and access point/client pairs so that the noise levels in the receivers within the access points and clients, respectively, are minimized. The noise matrix is updated on a continuous basis to account for changes in the propagation channel and channel variations at the access points.
现在转向附图,图1示出了单个模态天线的四个辐射图模式。模态天线能够生成多个辐射图(示出为四个,但可以更多)。所示出的四个辐射模式在四个不同的方向(D1;D2;D3和D4)上提供峰值增益覆盖。Turning now to the drawings, Figure 1 shows four radiation pattern patterns of a single modal antenna. The modal antenna is capable of generating multiple radiation patterns (four are shown, but there can be more). The four radiation patterns shown provide peak gain coverage in four different directions (D1; D2; D3 and D4).
图2示出了一个通信系统,其包括:网络控制器、包含被标记为“AP1”的第一接入点和被标记为“AP2”的第二接入点的两个接入点、以及无线连接至两个接入点的四个客户端设备。每个接入点识别所有设备;然而,通过分别配置每个接入点的自适应天线系统的“模式”,优化了系统吞吐量,从而使得该模式针对非预期链路进行区分(例如,在特定选择模式的辐射图中的零(null)指示在不需要链路的客户端设备的方向上),并且还使得该模式优先考虑与预期客户端设备的链路通信(例如,将辐射图的增益最大值朝向需要链路的客户端设备操纵)。这里,第一接入点(AP1)以第一模式进行配置,其中第一模式是在预期客户端(设备1和设备3)的方向上建立增益、同时排除与非预期客户端设备(设备2和设备4)的链路的模式。然而,注意,第二接入点(AP2)以第二模式进行配置,使得与预期客户端(设备2和设备4)建立链路,而该模式同时区分与非预期客户端(设备1和设备3)的链路。在这方面,所有设备(设备1至4)都是网络上的服务,然而,吞吐量在网络上的接入点和设备之中均匀分布,并通过由网络控制器提供的控制来完成,以配置第一接入点和第二接入点的自适应天线系统。FIG. 2 shows a communication system including: a network controller, two access points including a first access point labeled “AP1” and a second access point labeled “AP2”, and four client devices wirelessly connected to the two access points. Each access point recognizes all devices; however, the system throughput is optimized by configuring the “pattern” of the adaptive antenna system of each access point separately so that the pattern distinguishes for unintended links (e.g., a null in the radiation pattern of a particular selected pattern indicates in the direction of client devices that do not need a link) and also so that the pattern prioritizes link communications with intended client devices (e.g., steering the gain maximum of the radiation pattern toward client devices that need a link). Here, the first access point (AP1) is configured in a first pattern, where the first pattern is a pattern that establishes gain in the direction of intended clients (devices 1 and 3) while excluding links with unintended client devices (devices 2 and 4). However, note that the second access point (AP2) is configured in a second pattern so that links are established with intended clients (devices 2 and 4) while distinguishing links with unintended clients (devices 1 and 3). In this regard, all devices (devices 1 to 4) are services on the network, however, the throughput is evenly distributed among the access points and devices on the network and is accomplished through control provided by the network controller to configure the adaptive antenna systems of the first access point and the second access point.
图3示出了三个接入点的信道利用的图,其中三个接入点被标记为“AP1”、“AP2”和“AP3”。示出了对每个接入点的频率响应以及SINR。如在图中可以看出的,每个接入点的有效噪声本底受通信系统中的其他接入点生成的频率分量的限制或设置。与这三个接入点一起使用的天线系统包含传统的无源天线,每个无源天线具有单一辐射模式或辐射图(与模态天线的多个可重配置的天线模式相反)。FIG3 shows a graph of channel utilization for three access points, which are labeled "AP1," "AP2," and "AP3." The frequency response and SINR for each access point are shown. As can be seen in the figure, the effective noise floor of each access point is limited or set by the frequency components generated by the other access points in the communication system. The antenna system used with the three access points includes traditional passive antennas, each of which has a single radiation pattern or radiation diagram (as opposed to the multiple reconfigurable antenna patterns of a modal antenna).
图4示出了三个接入点的信道利用的图,其中三个接入点被标记为“AP1”、“AP2”和“AP3”。这三个接入点具有自适应天线系统,这些自适应天线系统能够生成多个辐射模式,其中,所述天线系统在以多个模式中的每一个来配置时产生不同的辐射图。示出了对每个接入点的频率响应以及由每个接入点的自适应天线系统生成的三种自适应操纵模式的SINR。在主动操纵模式提供了来自自适应天线系统的不同辐射图和/或极化状态的情况下,SINR将会从一个模式到下一个模式发生变化。可以选择提供最高SINR的模式,并将其用于接入点和客户端设备之间的通信,从而提供改善的通信性能。此外,可以针对每个接入点的多个信道勘测自适应操纵模式,并且可以结合自适应操纵模式选择来执行针对接入点的信道选择。当执行了最优的信道选择和自适应操纵模式选择时,由于改善了频率响应滚降,结果将是每个接入点处的SINR性能的改善。FIG. 4 shows a graph of channel utilization for three access points, which are labeled “AP1,” “AP2,” and “AP3.” The three access points have adaptive antenna systems that are capable of generating multiple radiation patterns, wherein the antenna systems produce different radiation patterns when configured in each of the multiple patterns. The frequency response to each access point and the SINR for the three adaptive steering patterns generated by the adaptive antenna system of each access point are shown. In the case where the active steering modes provide different radiation patterns and/or polarization states from the adaptive antenna system, the SINR will vary from one mode to the next. The mode that provides the highest SINR can be selected and used for communications between the access point and the client device, thereby providing improved communication performance. In addition, adaptive steering modes can be surveyed for multiple channels for each access point, and channel selection for the access point can be performed in conjunction with adaptive steering mode selection. When optimal channel selection and adaptive steering mode selection are performed, the result will be an improvement in SINR performance at each access point due to improved frequency response roll-off.
图5示出了通信系统中的每个接入点的噪声矩阵,其中,接入点和一个或多个客户端设备包含自适应天线系统。在对自适应天线系统的主动操纵模式进行采样时,可以确定接入点的接收器以及客户端设备的接收器中的平均噪声水平。当为系统中的接入点选择最优信道并且为每个客户端选择使用的自适应操纵模式时,该噪声矩阵为勘测提供了数据库。FIG5 shows a noise matrix for each access point in a communication system, wherein the access point and one or more client devices include an adaptive antenna system. When sampling the active steering pattern of the adaptive antenna system, the average noise level in the receiver of the access point and the receiver of the client device can be determined. The noise matrix provides a database for surveying when selecting the optimal channel for the access point in the system and the adaptive steering pattern used for each client.
图6示出了用来优化通信系统中的每个接入点或节点的信道选择、以及用于自适应天线的最优主动操纵模式的选择的过程的流程图。6 shows a flow chart of a process for optimizing channel selection for each access point or node in a communication system and selection of an optimal active steering pattern for an adaptive antenna.
图7示出了被标记为“AP1”、“AP2”、“AP3”和“AP4”的四个接入点的信道利用的图。示出了对每个接入点的频率响应,其中“AP1”和“AP4”在同一信道上运行。示出了用于每个接入点的频率响应的最佳主动操纵模式。FIG7 shows a graph of channel utilization for four access points labeled "AP1," "AP2," "AP3," and "AP4." The frequency response for each access point is shown, with "AP1" and "AP4" operating on the same channel. The optimal active steering mode for the frequency response of each access point is shown.
图8示出了用于分别服务多个客户端设备31;32;33;34中的每一个与网络之间的无线通信链路的网络通信系统。用于分别服务多个客户端设备中的每一个与网络之间的无线通信链路的网络通信系统可以包括:第一接入点10、第二接入点20和网络控制器40。第一接入点可以包含与其相关联的自适应天线系统100,该自适应天线系统可以以多个可能模式中的一个来配置,其中,该自适应天线系统在以多个可能模式中的每一个进行配置时呈现不同的辐射图101(a至d)。网络控制器40可以适于运行用于确定给定时间段内自适应天线系统100的最优模式的算法50,该算法包括以下步骤:(i)利用第一接入点,勘测可用于与网络通信的多个客户端设备中的每一个,(ii)以其多个可能模式中的每一个来配置第一接入点的自适应天线系统,并针对每个模式测量与第一接入点的自适应天线系统和多个客户端设备中的每一个相关联的信道质量指示符(CQI),(iii)在网络上存储与每个模式、设备和所测量的自适应天线系统的信道质量指示符相对应的天线模式数据,(iv)基于天线模式数据选择多个可能模式中的最优模式,以及(v)以最优模式配置第一接入点的自适应天线系统。8 shows a network communication system for serving wireless communication links between each of a plurality of client devices 31; 32; 33; 34 and a network, respectively. The network communication system for serving wireless communication links between each of a plurality of client devices and a network, respectively, may include: a first access point 10, a second access point 20, and a network controller 40. The first access point may include an adaptive antenna system 100 associated therewith, which may be configured in one of a plurality of possible modes, wherein the adaptive antenna system exhibits a different radiation pattern 101 (a to d) when configured in each of the plurality of possible modes. The network controller 40 can be adapted to run an algorithm 50 for determining an optimal mode for the adaptive antenna system 100 for a given time period, the algorithm comprising the steps of: (i) surveying, using a first access point, each of a plurality of client devices that can be used to communicate with the network, (ii) configuring the adaptive antenna system of the first access point in each of its plurality of possible modes and measuring, for each mode, a channel quality indicator (CQI) associated with the adaptive antenna system of the first access point and each of the plurality of client devices, (iii) storing on the network antenna mode data corresponding to each mode, device, and measured channel quality indicator of the adaptive antenna system, (iv) selecting an optimal mode from the plurality of possible modes based on the antenna mode data, and (v) configuring the adaptive antenna system of the first access point in the optimal mode.
第二接入点20被示出为包括具有其固定的辐射图201a的第二无源天线200。然而,如上面讨论的,第二天线可替代地包括自适应天线系统。The second access point 20 is shown as comprising a second passive antenna 200 having its radiation pattern 201a fixed. However, as discussed above, the second antenna may alternatively comprise an adaptive antenna system.
自适应天线系统的特性可以在于:辐射元件、与辐射元件相邻定位的一个或多个寄生元件、以及一个或多个有源调谐组件,一个或多个有源调谐组件中的每一个被耦合至一个或多个寄生元件中的一个,并且被配置为调整相应的寄生元件的当前模式。The adaptive antenna system can be characterized by: a radiating element, one or more parasitic elements positioned adjacent to the radiating element, and one or more active tuning components, each of the one or more active tuning components being coupled to one of the one or more parasitic elements and configured to adjust a current mode of the corresponding parasitic element.
有源调谐组件可以从以下组成的组合中单独选择:开关、可调电容器、可调电感器、MEMs器件、可调移相器和二极管。Active tuning components can be individually selected from the following combinations: switches, tunable capacitors, tunable inductors, MEMs devices, tunable phase shifters, and diodes.
第二接入点可以包括第二自适应天线系统,该第二自适应天线系统可以以与之相关联的多个可能的第二模式中的一个进行配置,其中,第二自适应天线系统在以多个可能的第二模式中的每一个进行配置时呈现不同的辐射图。The second access point may include a second adaptive antenna system configurable in one of a plurality of possible second modes associated therewith, wherein the second adaptive antenna system exhibits a different radiation pattern when configured in each of the plurality of possible second modes.
网络通信系统可以包括三个或更多个接入点。The network communication system may include three or more access points.
最优模式可以是实现网络的最大吞吐量的、多个可能模式中的一个。最优模式可以是根据单个设备吞吐量的网络偏好来实现优先(prioritized)吞吐量的、多个可能模式中的一个。The optimal mode may be one of multiple possible modes that achieves maximum throughput for the network. The optimal mode may be one of multiple possible modes that achieves prioritized throughput based on network preference for individual device throughput.
可以在平衡网络上的接入点中的每一个之间的设备负载时实现最大吞吐量。可以在平衡网络上的接入点中的每一个的每个信道之间的设备负载时实现最大吞吐量。Maximum throughput may be achieved when balancing the device load between each of the access points on the network. Maximum throughput may be achieved when balancing the device load between each channel of each of the access points on the network.
天线模式数据还包括频率或信道信息。The antenna pattern data also includes frequency or channel information.
如上所述,CQI可以从以下组成的组合中选择:信干噪比(SINR)、接收信号强度指示符(RSSI)和调制编码方案(MCS)或其他类似度量。As described above, the CQI may be selected from a combination of: signal to interference plus noise ratio (SINR), received signal strength indicator (RSSI), and modulation and coding scheme (MCS), or other similar metrics.
在一些实施例中,通信系统包括:以频率F1运行的第一射频收发器;耦合至所述第一收发器的第一天线系统;以频率F2运行的第二射频收发器;耦合至所述第二收发器的第二天线系统;用于命令和控制所述第一收发器和第二收发器的网络控制器;多个客户端设备,每个客户端设备包含能够以频率F1或F2或F1和F2两者运行的发送器、接收器或收发器;其中耦合至所述第一收发器的第一天线系统是自适应天线系统,该自适应天线系统能够生成两个或更多个辐射模式,每个辐射模式与其他模式相比具有不同的辐射图和/或极化;并且算法驻留在网络控制器中,所述算法被配置为控制自适应天线系统的辐射模式的变化以及由网络的接入点中的每一个使用的信道、在第一收发器利用自适应天线系统的辐射模式与一个或多个客户端设备建立通信链路时勘测通信链路度量、在第二收发器与一个或多个客户端设备建立通信链路时勘测通信链路度量、并且当第一收发器与第一客户端建立通信链路时为耦合至第一收发器的自适应天线系统选择辐射模式,该辐射模式在第二收发器以相同的时间间隔与第二客户端建立通信链路时,在第二收发器的接收器中提供最小的噪声水平。In some embodiments, a communication system includes: a first radio frequency transceiver operating at a frequency F1; a first antenna system coupled to the first transceiver; a second radio frequency transceiver operating at a frequency F2; a second antenna system coupled to the second transceiver; a network controller for commanding and controlling the first transceiver and the second transceiver; a plurality of client devices, each client device comprising a transmitter, a receiver, or a transceiver capable of operating at a frequency F1 or F2 or both F1 and F2; wherein the first antenna system coupled to the first transceiver is an adaptive antenna system capable of generating two or more radiation patterns, each radiation pattern having a different radiation pattern and/or polarization than the other patterns; and an algorithm resident in a network controller, the algorithm being configured to control changes in a radiation pattern of the adaptive antenna system and a channel used by each of the access points of the network, to survey communication link metrics when a first transceiver establishes a communication link with one or more client devices using the radiation pattern of the adaptive antenna system, to survey communication link metrics when a second transceiver establishes a communication link with one or more client devices, and to select a radiation pattern for an adaptive antenna system coupled to a first transceiver when the first transceiver establishes a communication link with a first client that provides a minimum noise level in a receiver of the second transceiver when the second transceiver establishes a communication link with a second client at the same time interval.
根据通信系统的实施例,多个频率可用于发送和接收,驻留在网络控制器中的算法被配置为:控制自适应天线系统的辐射模式的变化以及由网络的接入点中的每一个使用的信道;在第一收发器利用自适应天线系统的辐射模式与一个或多个客户端设备建立通信链路时勘测通信链路度量;在第二收发器与一个或多个客户端设备建立通信链路时勘测通信链路度量;并且当第一收发器与第一客户端建立通信链路时,为耦合至第一收发器的自适应天线系统选择辐射模式,该辐射模式在第二收发器以相同的时间间隔与第二客户端建立通信链路时,在第二收发器的接收器中提供最小的噪声水平,在两个或更多个频率处执行针对各个模式的通信链路度量勘测,其中,为第一和第二收发器选择运行的最优频率,以使第一和第二收发器的接收器中的噪声水平最小。According to an embodiment of the communication system, multiple frequencies can be used for transmission and reception, and an algorithm resident in a network controller is configured to: control changes in the radiation pattern of the adaptive antenna system and the channels used by each of the access points of the network; survey communication link metrics when a first transceiver establishes a communication link with one or more client devices using the radiation pattern of the adaptive antenna system; survey communication link metrics when a second transceiver establishes a communication link with one or more client devices; and when the first transceiver establishes a communication link with a first client, select a radiation pattern for the adaptive antenna system coupled to the first transceiver, the radiation pattern providing a minimum noise level in the receiver of the second transceiver when the second transceiver establishes a communication link with a second client at the same time interval, and perform communication link metric surveys for each pattern at two or more frequencies, wherein an optimal frequency of operation is selected for the first and second transceivers to minimize the noise level in the receivers of the first and second transceivers.
在另一实施例中,耦合至所述第二收发器的第二天线系统是自适应天线系统,该自适应天线系统能够生成两个或更多个辐射模式,每个辐射模式与其他模式相比具有不同的辐射图和/或极化;驻留在网络控制器中的算法被配置为:控制第一和第二自适应天线系统的辐射模式的变化以及由网络的接入点中的每一个使用的信道;在第一收发器利用自适应天线系统的辐射模式与一个或多个客户端设备建立通信链路时勘测通信链路度量;在第二收发器利用自适应天线系统的辐射模式与一个或多个客户端设备建立通信链路时勘测通信链路度量;并且当第一收发器与第一客户端建立通信链路时,为耦合至第一收发器的自适应天线系统选择辐射模式,该辐射模式在第二收发器与第二客户端建立通信链路时,在第二收发器的接收器中提供最小的噪声水平;并且当第二收发器与第二客户端建立通信链路时,为耦合至第二收发器的自适应天线系统选择辐射模式,该辐射模式在第一收发器以相同的时间间隔与第一客户端建立通信链路时,在第一收发器的接收器中提供最小的噪声水平;在两个或更多个频率处执行针对各个模式的通信链路度量勘测,其中,为第一和第二收发器选择运行的最优频率,以使第一和第二收发器的接收器中的噪声水平最小。In another embodiment, the second antenna system coupled to the second transceiver is an adaptive antenna system capable of generating two or more radiation patterns, each radiation pattern having a different radiation pattern and/or polarization compared to the other patterns; an algorithm resident in a network controller is configured to: control changes in the radiation patterns of the first and second adaptive antenna systems and the channels used by each of the access points of the network; survey communication link metrics when the first transceiver establishes a communication link with one or more client devices using the radiation patterns of the adaptive antenna system; survey communication link metrics when the second transceiver establishes a communication link with one or more client devices using the radiation patterns of the adaptive antenna system; and When establishing a communication link, a radiation pattern is selected for an adaptive antenna system coupled to a first transceiver, the radiation pattern providing a minimum noise level in a receiver of the second transceiver when the second transceiver establishes a communication link with a second client; and when the second transceiver establishes a communication link with the second client, a radiation pattern is selected for an adaptive antenna system coupled to a second transceiver, the radiation pattern providing a minimum noise level in a receiver of the first transceiver when the first transceiver establishes a communication link with the first client at the same time intervals; performing a communication link metric survey for each pattern at two or more frequencies, wherein an optimal frequency of operation is selected for the first and second transceivers to minimize the noise level in the receivers of the first and second transceivers.
在各个实施例中,通信链路度量是信道质量指示符(CQI)度量,诸如信干噪比(SINR)、接收信号灵敏度指示符(RSSI)、调制编码方案(MCS)或从通信系统的基带处理器获得的类似度量,以提供基于CQI对辐射图进行采样、并作出关于在最优辐射图或模式下运行的决策的能力。In various embodiments, the communication link metric is a channel quality indicator (CQI) metric, such as a signal-to-interference plus noise ratio (SINR), a received signal sensitivity indicator (RSSI), a modulation and coding scheme (MCS), or a similar metric obtained from a baseband processor of the communication system to provide the ability to sample the radiation pattern based on the CQI and make decisions about operating in an optimal radiation pattern or mode.
算法可以驻留在与第一或第二收发器共位(co-located)的处理器中。算法可以驻留在与第一或第二自适应天线系统共位的处理器中。The algorithm may reside in a processor co-located with the first or second transceiver.The algorithm may reside in a processor co-located with the first or second adaptive antenna system.
某些实施例可以包括多个收发器,多个收发器中的一个或多个收发器具有耦合到它们的自适应天线系统;驻留在网络控制器中的算法被配置为:控制通信系统中的所有自适应天线系统的辐射模式的选择;在收发器利用自适应天线系统的辐射模式与客户端设备建立通信链路时对具有自适应天线系统的所有收发器勘测通信链路度量;并选择收发器/客户端对,以与通信系统中的其他收发器同时建立通信链路,从而针对通信系统中的收发器优化最小噪声水平。Certain embodiments may include multiple transceivers, one or more of the multiple transceivers having adaptive antenna systems coupled thereto; an algorithm resident in a network controller configured to: control selection of radiation patterns for all adaptive antenna systems in a communication system; survey communication link metrics for all transceivers having adaptive antenna systems when the transceivers establish communication links with client devices utilizing the radiation patterns of the adaptive antenna systems; and select transceiver/client pairs to simultaneously establish communication links with other transceivers in the communication system to optimize minimum noise levels for the transceivers in the communication system.
某些实施例可以另外包括其中驻留在网络控制器中的算法被配置为:控制通信系统中所有自适应天线系统的辐射模式的选择;在收发器利用自适应天线系统的辐射模式与客户端设备建立通信链路时对具有自适应天线系统的所有收发器勘测通信链路度量;并为收发器/客户端对的所述收发器选择频率信道,以与通信系统中的其他收发器同时建立通信链路,从而针对通信系统中的收发器优化最小噪声水平。Certain embodiments may further include an algorithm resident in a network controller configured to: control selection of radiation patterns for all adaptive antenna systems in a communication system; survey communication link metrics for all transceivers having adaptive antenna systems when the transceivers establish communication links with client devices utilizing the radiation patterns of the adaptive antenna systems; and select a frequency channel for said transceiver of a transceiver/client pair to simultaneously establish communication links with other transceivers in the communication system, thereby optimizing a minimum noise level for the transceivers in the communication system.
某些实施例可以另外包括其中第一和第二射频收发器以频率F1运行。某些实施例可以另外包括其中具有自适应天线系统的两个或更多个收发器以频率F1运行。Certain embodiments may additionally include wherein the first and second radio frequency transceivers operate at frequency F1. Certain embodiments may additionally include wherein two or more transceivers having adaptive antenna systems operate at frequency F1.
尽管本公开包含许多细节,但是这些细节不应被解释为对发明或可要求保护的内容的范围的限制,而应解释为对特定于本发明的特定实施例的特征的描述。在本文中在单独的实施例的上下文中描述的某些特征也可以在单个实施例中组合实现。相反,在单个实施例的上下文中描述的各种特征也可以单独在多个实施例中或在任何合适的子组合中实现。而且,尽管以上可以将特征描述为以某些组合起作用并且甚至最初如此要求保护,但是所要求保护的组合中的一个或多个特征在某些情况下可以从该组合中排除,并且所要求保护的组合可以仅涉及子组合或子组合的变体。Although the present disclosure contains many details, these details should not be interpreted as limitations on the scope of the invention or the content that can be claimed, but should be interpreted as descriptions of features specific to a particular embodiment of the present invention. Certain features described in the context of separate embodiments herein may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented individually in multiple embodiments or in any suitable sub-combination. Moreover, although the features may be described above as acting in certain combinations and even initially claimed as such, one or more features in the claimed combination may be excluded from the combination in some cases, and the claimed combination may only involve a sub-combination or a variant of a sub-combination.
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