CN1462523A - Ieee802.11无线局域网的动态频率选择方案 - Google Patents
Ieee802.11无线局域网的动态频率选择方案 Download PDFInfo
- Publication number
- CN1462523A CN1462523A CN02801617A CN02801617A CN1462523A CN 1462523 A CN1462523 A CN 1462523A CN 02801617 A CN02801617 A CN 02801617A CN 02801617 A CN02801617 A CN 02801617A CN 1462523 A CN1462523 A CN 1462523A
- Authority
- CN
- China
- Prior art keywords
- channel
- sta
- bss
- signal
- new channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
所公开的是用于在IEEE 802.11无线局域网(WLAN)中的接入点(AP)和多个站(STA)之间动态选择通信信道的方法和系统。该方法包括步骤:确定是否需要被多个无线STA使用的新信道;由多个STA的至少一个测量多个频率信道的信道质量;根据接收的信号强度指示(RSSI)、无干扰信道估计(CCA)忙周期和周期性来报告多个频率信道的质量;以及,基于信道质量报告来选择候选信道之一用于AP和多个STA之间的通信。
Description
本发明涉及在IEEE 802.11(h)无线局域网(WLAN)中的动态频率选择(DFS)机制,其中根据由接入点(AP)基于信道质量报告做出的信道来决定动态选择WLAN的可操作信道。
在IEEE 802.11标准中规定了支持物理层单元的媒体接入控制(MAC)和无线局域网(WLAN)的物理特性,这在国际标准ISO/IEC8802-11,“Information Technology-Telecommunications andinformation exchange area network(信息技术—电信和信息交换区域网)”,1999版中被定义,整体合并在这里供参考。该标准规定了两种变体WLAN:基于基础设施的和特设(ad-hoc)类型的。在前一种网络中,通信仅在称为站(STA)和接入点(AP)的无线节点之间进行,而不象后者直接在无线节点之间进行。在相同的无线电覆盖范围内的STA和AP,被称为基本业务组(BSS)。
当两个临近的基本业务组(BSS)彼此位置接近并且在相同的信道上运行时,这被称为交叠BSS,则因为交叠的BSS之间可能的相互干扰,所以很难支持需要的服务质量(Qos)。除此之外,临近特定STA的其他协同定位系统(例如,在欧洲无线电通信委员会(ERC)规定中提出的HIPERLAN/2设备),会导致接收干扰。在部署WLAN之前小心地规划向BSS的信道分配并不总是可能避免干扰,特别是在家庭/办公室环境中,其中其他WLAN设备在附近,例如,在相邻的房间或办公室中独立地运行。
因此,需要能够合并到IEEE 802.11标准中,能够使接入点(AP)为与其基本业务组(BSS)相关的所有站(STA)选择信道的动态频率选择(DFS)方案。为实现这一点,本发明在802.11媒体接入控制(MAC)和802.11a物理层(PHY)(用于在5GHz未被许可频段的IEEE 802.11WLAN运行)规范中引入修改,使得为网络的运行能够动态选择频率信道。这将促进满足由欧洲无线电通信委员会(ERC)所加的需求并且将增强IEEE 802.11WLAN在5GHz频段运行的性能。
本发明针对无线局域网(WLAN)中动态频率选择方法和系统,其中每个信道被根据由接入点(AP)确定的标准动态选择。
根据本发明的一个方面,提供了一种在接入点(AP)和位于基本业务组(BSS)的覆盖区域内的多个站之间动态选择通信信道的方法。该方法包括步骤:确定是否需要被多个无线STA使用的新信道;由AP向多个STA的至少一个请求信道质量测量值;将多个频率信道的信道质量报告从所述被请求的STA发送到AP,其中信道质量报告包括接收的信号强度指示(RSSI)以及由多个STA测量的所有信道的无干扰信道估计(CCA)忙周期;确定来自临近BSS的信号是否被多个STA接收;根据信道质量报告基于信道质量和规定要求来选择新信道用于AP和多个STA之间的通信;向多个STA通信来自所述AP的关于新信道的信息;以及,将所有的STA转换到新信道。
根据本发明的另一个方面,提供了一种在WLAN中在接入点(AP)和位于BSS的覆盖区域内的多个STA之间动态选择通信信道的系统。该系统包括用于确定是否需要被多个无线STA使用的新信道的装置;用于由AP向多个STA的至少一个请求信道质量测量值的装置;用于发送AP和多个STA的至少一个之间的多个频率信道的信道质量报告的装置,其中信道质量报告包括接收的信号强度指示(RSSI)以及由多个STA测量的所有信道的无干扰信道估计(CCA)忙周期;用于确定来自临近BSS的信号是否被多个STA接收的装置;用于如果检测到临近的BSS信号或周期,则基于信道质量的最小降级来选择新信道用于AP和多个STA之间的通信的装置;以及,用于将来自AP的关于新信道的信息通信给多个STA的装置。
结合附图时,参考下列详细描述可以得到本发明的方法和设备的更完整的理解,其中:
图1说明了要在其中应用本发明的实施方案的无线通信系统的结构;
图2说明了根据本发明的实施方案在特定的基本业务组(BSS)中接入点(AP)和每个站(STA)的简化框图;
图3是说明根据本发明的实施方案可选择地交换到新信道的操作步骤的流程图;
图4说明了根据本发明的实施方案用于将信息从AP发送到多个STA的信道测量请求帧的格式;
图5(a)-(b)说明了根据本发明的实施方案用于将信息从AP发送到多个STA的信道测量方法信息元素的格式;
图6(a)-(e)说明了根据本发明的实施方案用于将信息从BSS中的多个STA发送到AP的信道测量报告信息元素的格式;
图7是说明根据本发明的实施方案由AP基于信道质量报告来确定新信道的过程的流程图;
图8说明了根据本发明的实施方案用于将公告数据从AP发送到多个STA的帧主体的格式。
在下面的描述中,为了解释而不是限制的目的,提出了特定的细节如特定的结构、接口、技术等,以便提供本发明的彻底的理解。为了简单和清楚起见,省略了众所周知的设备、电路以及方法的详细描述以便不使不必要的细节使本发明的描述变得模糊。
图1说明了其中要应用本发明的实施方案的有代表性的网络。根据本发明的原理,提供了动态频率选择(DFS)方案,使得接入点(AP)能够基于信道质量报告来为与其基本业务组(BSS)相关的所有站(STA)选择信道并且还降低对其他协同定位的系统的干扰。应该指出为说明的目的图1所示的网络很小。实际上大多数网络包括大得多数量的移动STA。
本发明通过使AP能够为与其BSS相关的所有站(STA)提供新的无线链路有了对无线局域网(WLAN)的应用。例如,BSS1的STA3可以在与相邻BSS2的交叠的区域中,因此经历着来自相邻BSS2的STA2的争用。替代的,STA3经历着来自属于如卫星和雷达系统的其他被许可操作者的附近非802.11依从设备的干扰。为这个目的,本发明向802.11MAC和802.11a PHY规范中引入修改,使得为网络的运行能够动态选择频率信道。这将促进满足由欧洲无线电通信委员会(ERC)所加的需求并且将增强IEEE 802.11 WLAN在5GHz频段或其他频段如2.4GHz的运行的性能。对于本领域的技术人员很显然利用不同的物理层规范,如IEEE 802.11b PHY规范,本发明可以被简单地扩展到其他频段,如2.4GHz。
参见图2,图1中所示的WLAN中的AP和每个STA包括具有如图2的框图中所说明的结构的系统。AP和STA都包括显示器20、CPU 22、发送机/接收机24、输入设备26、存储模块28、随机访问存储器(RAM)30、只读存储器(ROM)32、以及通用总线40。虽然该描述指通常在描述特定计算机系统中使用的术语,但是该描述和概念同等地应用于其他处理系统,包括具有与图2所示不相似的结构的系统。发送机/接收机24被耦合到天线(未示出)上以便发送想要的数据并且其接收机将接收的信号转换成对应的数字数据。CPU 22在包含在ROM 32中的操作系统的控制下运行并且通过使AP能够为与其BSS相关的所有站(STA)提供新信道或无线链路,利用RAM 30执行在无线局域网(WLAN)中的频率选择。
现在,下面介绍根据本发明在由AP为所有站(STA)选择新信道中的操作步骤的原理。
参见图3,发明的步骤包括下列步骤:监视信道100;由AP选择新信道200;发送信道转换公告300;以及,转换到选择的信道400。监视信道100包括三个子步骤(1)由AP做信道测量;(2)由AP对信道测量值的请求;以及(3)由STA的测量报告。
监视信道(图3的步骤100)
如果出现下列事件之一(但是不必须受限于):(1)由AP新形成特定的基本业务组(BSS)(步骤401);(2)AP运行没有任何相关STA的给定BSS一段特定的时间;(3)AP和/或BSS中的一个或多个STA持续经历了很差的通信信道;以及(4)出现导致信道干扰的BSS交叠;(5)检测到其他被许可的操作者,则可以启动信道监视。如果出现这些事件中的任何一个,则AP动态地选择新的无线链路来运行其BSS。因此,在转换到最好的无线链路之前,AP需要通过直接检测信道情况或者通过从相关STA请求信道情况来知道当前以及其他信道的状态以及其他被许可的操作者的存在。
(1)通过AP的信道测量
如果AP直接执行信道测量,则测量以业务中断被最小化的方式进行。通过在争用空闲期间(CFP)或争用空闲脉冲(CFB)期间测量信道质量可以实现这一点。CFP是当前802.11标准的一部分而CFB有望成为很快会出现的802.11e标准的一部分。因为AP被设计用于准备好在任何时候接收帧,除非其正在接收帧,所以CFP和CFB很有用。在运行时,通过通告大于支持STA同意的服务质量(QoS)所需的值的aCFMaxDuration,AP可以在结果的剩余时间测量当前信道和/或其他信道。CFB可以在802.11e依从的WLAN中以类似的方式使用。也就是,在争用期间(CP),AP可以通过轮询自己(也就是,发送寻址到自己的QoS CF-Poll)来启动CFB。在由在QoS CF-Poll中找到的周期域确定的CFB周期期间,所有的STA应保持安静,并且AP可以在此期间测量当前信道和/或其他信道。替代的,AP可以使用清除发送(CTS)帧来在没有业务中断的情况下测量该信道。通过与作为接收机地址(RA)的自身地址与CTS帧一起发送,AP可以强迫接收这个CTS帧的所有STA在特定的周期内保持沉默,在此期间AP可以测量该信道。
(2)通过AP请求信道测量
如果AP向与其BSS相关的一组STA请求信道测量,则AP发送如图4所示的信道测量请求帧。向STA的信道质量测量请求的发送可以是单播、组播或广播。请求帧将规定(1)何时开始测量;(2)要测量哪个信道;(3)测量多长时间;以及(4)如何测量。如图4所示,信道测量帧包含四个域:“行动代码”、“激活延迟”、“对话标记”和“信道测量方法元素”。“激活延迟”域规定何时开始信道测量过程。“对话标记”是单一八位字节域,其区别彼此的不同测量请求。“信道测量方法元素”域指示要测量的一组信道,其中每个八位字节规定一个信道号,并且可以是两种形式之一:“基本信道测量方法”或“CF信道测量方法”,如图5(a)和5(b)所示。
参见图5(a),“基本信道测量帧”包含除“元素ID”和“长度”域之外的三个域:“测量持续时间”、“信道号”和“报告时间限制”。“测量持续时间”(≥0)域指示由被请求的STA执行的每个信道测量的持续时间。“信道号”域指示要测量的一组信道,其中每个八位字节规定一个信道号。“报告时间限制”(≥0)域指示被请求的STA应该在其间将测量结果报告回AP的时间期间。
参见图5(b),“CF信道测量帧”包含除“元素ID”和“长度”域之外的五个域:“测量持续时间”、“测量偏移”、“非测量持续时间”、“信道号”和“报告时间限制”。“测量持续时间”(≥0)域以争用空闲周期(CFP)重复间隔(CFPRI的)数量,指示其中被请求的STA为每个信道的测量花费的持续时间。“测量偏移”和“非测量持续时间”域表示每个CFPRI中的被请求的STA为了测量远程信道不应该远离当前信道的时间周期。例如,在CFPRI[0,CFPRI]期间,从目标信标发送时间(TBTT)开始,此时CFP启动,STA为测量远程信道要远离当前信道,除了在[CFPRI*MO/256,CFPRI*(MO+NMD)/256]期间,其中MO表示“测量偏移”值,并且NMD分别表示“非测量持续时间”值。“信道号”域指示要测量的一组信道,其中每个八位字节规定一个信道号。“报告时间限制”(≥0)域指示被请求的STA应该在其间将测量结果报告回AP的时间期间。
(3)通过多个站(STA)的测量报告
一接收到如前述几段描述的由AP发出的测量信道请求或者当主动测量时,每个STA将发送一个信道测量帧。图6(a)说明信道测量报告帧的格式。注意信道测量报告帧可以在不被AP请求的情况下通过信道测量请求帧被发送。在这样的情况下,“对话标记”域的值将被设置为零。
一般,信道测量报告帧将包含以下面三种形式完成的测量结果:(i)检测其他BSS;(ii)无干扰信道估计(CCA)忙时的测量值;以及,(iii)接收的信号强度统计值的测量值。
(i)其他BSS的检测
可以通过利用已知为“扫描”业务和/或其变体的已有的MAC子层管理实体(MLME)业务执行在被请求的频率信道中其他多个BSS的检测。这个业务由驻留在每个STA里的站管理实体(SME)通过管理原语MLME-SCAN.request向MLME请求以便请求在多个信道中已有多个BBS的检测。此后,原语MLME-SCAN.confirm向SME返回包括找到的所有BSS的完整描述的扫描结果。注意这个业务最初在802.11中定义以便使STA调查其在以后挑选来执行切换的潜在的BSS。如果检测到BSS,则STA确定是否接收到带有“去往DS”(如果帧在去AP方向被发送)和/或“来自DS”(如果帧从AP被发送)域组和/或信标帧。
(ii)CCA忙周期测量
除此之外,由802.11非依从设备,如ETSI BRAN HIPERLAN/2设备或卫星系统的噪声或干扰等级的测量值被检测并且报告给AP。这样的设备的存在不象BSS,而是象信道间干扰一样可检测。
STA将跟踪CCA忙周期以便报告回在其间CCA来自整个测量周期的忙的部分时间。注意CCA应该通过以下被指示忙(1)在4微秒里有效的OFDM传输的开始在接收机电平≥-82dbm具有概率>90%,以及(2)任何信号在-62毫瓦分贝以上。因此,即使在没有检测到BBS时部分周期可以是非零。
STA还通过跟踪下列信息试图确定周期性脉冲的特征。每个STA可以跟踪观察的连续的CCA忙周期的数量,其中每个忙周期在一个时隙期间被定义为CCA忙指示。同时,每个STA可以跟踪连续忙周期之间时隙中的非零间隔,因此如果这两个参数连续两次或更多次具有某个容忍度地匹配,则被检测的信号可以被解释为来自周期性的源(某些非802.11依从设备展示周期性特征)并且被报告给AP,如图6(b)所示。除此之外,如果两个或更多连续忙和闲周期具有某个容忍度地匹配,则可以指示雷达类型的信号的存在并且这个信息被传递给AP。
图6(b)说明根据本发明由STA用于将信道质量测量值报告回AP的信道测量报告信息元素的格式。如图6(b)所示,帧的长度依赖于信道的数量。参见图6(c),一个八位字节“测量汇总”域包括一个BSS域用于确定在信道测量期间接收到至少一个有效的MAC头;“QBSS”域确定在802.11e依从的WLAN中至少一个BSS在运行,并且只有如果STA报告是802.11e MAC使能,这个比特才可以被置位;“周期性”域指示至少两个连续的CCA忙开/关模式是周期性的;“信标”域确定在测量期间接收到至少一个信标;以及,“去往DS”(或者“去往AP”)和“来自DS”(或者“来自AP”)域确定在测量期间分别接收到至少一个带有“去往DS”域和“来自DS”域的帧。如图6(b)所示的信道测量报告信息元素还包括“自身的AP发送的功率”域,其从来自AP的测量请求帧的业务域中的“发送的功率”的四个比特拷贝而来,以及“自身信道接收的信号强度指示符(RSSI)”域,其表示用于接收来自AP的所述测量请求帧的PLCP前同步信号的天线处观察的能量,并且根据图6(d)被编码。还包括“CCA忙部分”域用于确定其间CCA忙的部分时间,并且其根据下列等式被计算:CCA忙部分=(255x[CCA忙周期]/[该信道中的全部测量时间])的上整数;“CCA忙持续时间”域指示检测到CCA忙的连续时隙的数量;以及,“CCA忙间隔”域表示重复CCA忙指示符的时隙中的时间间隔。“CCA忙持续时间”和“CCA忙间隔”域只有在测量汇总域中“周期性”被置位时才有效。
(iii)接收的信号强度统计值的测量值
而且,可用于确定信道情况的接收的信号的强度的测量值,被报告给AP,如图6(d)和6(e)所示。参见图6(e),范围从0到7的被称为接收的信号强度范围指数(RSSRI)的参数,被用于指示在每个站的天线处观察的能量等级。依赖于图6(b)中“BSS”域的值,4个八位字节接收信号强度指数(RSSRI)统计值域将表示两个不同的测量结果/指示符。当BSS域被置位时,也就是为1时,其表示在为每个接收的帧的PLCP前同步信号的接收期间测量的能量等级的统计值,而当其没有被置位,也就是为零时,其表示在天线处观察的瞬间能量等级的统计值。其被周期性地采样。
RSSI统计域的每个八位字节表示如下:
比特:3 | 5 |
RSSRI | 密度 |
3比特接收的信号强度范围指数(RSSRI)被定义为如图6(e)所示下列的函数:
(1)在BSS域被置位,也就是为1的情况下在接收的帧的PLCP前同步信号的接收期间观察到的能量等级,或者
(2)在BSS域没有被置位,也就是为零的情况下在天线处观察到的瞬间能量等级。
STA在频率信道测量期间跟踪对应于每个RSSRI的测量的采样的数量。5比特密度域由下列定义:
密度(RSSRI)=(31x[对应于RSSRI的采样的数量]/[采样的总数])的上整数
将选择具有最大密度值的四个RSSRI,并且将被包括在RSSRI统计值域中。
由AP决定(图3的步骤200)
在步骤100获得信道质量报告之后,现在AP确定用于在AP和STA之间通信的新信道。在图7的流程图中显示根据本发明选择新信道的方法。
在步骤8,启动从支持信道中选择信道的过程。然后,在步骤10确定每个STA是否基于在其中接收的信号检测到另一个BSS的存在。如果没有检测到,则在步骤12确定是否检测到接收的信号的周期性。如果检测到周期性,则在步骤14从候选信道列表中排除对应的信道。这里,候选信道列表包含AP考虑转换所有STA用于通信的信道号。
同时,如果在步骤10检测到另一个BSS,则在步骤16确定“来自DS”域是否被置位。如果是,则因来自另一个BSS的AP的干扰高度的不合需要,在步骤18从候选信道列表中排除对应的信道。如果在步骤16中“来自DS”域没有被置位或者在步骤12没有检测到周期性,则在步骤20AP将其包括在候选信道中。此后,在步骤22确定是否所有的信道都被扫描。如果是,则选择具有最小RSSRI和/或CCA值的信道。也就是,在获得多个潜在的候选信道之后,AP确定不仅对BSS的其他STA有最小干扰,而且对如HIPERLAN/2设备的其他协同定位的系统具有最小干扰的特定信道。最后,AP确定在步骤24选择的信道作为所有STA必须转换到的新信道。
由AP的信道转换通告(图3的步骤300)
在选择要转换到的新信道之后,AP基于从与这个特定BSS相关的STA接收的信道测量值以及其自己的测量值来通过信标传输发送新信道信息以便将所有STA转换到选择的信道。AP将与指示何时执行转换以及转换到哪个信道的信息一起重复地发送信标帧。图8描述了可用于这个信道转换通告的通告帧并且包含表示要转换到的频率信道号的“要转换到的信道”以及表示当BSS出现时在信道转换之前多少信标(包括当前帧)应该出现的“信道转换计数”。
转换到新信道(图3的步骤400)
最后,通过改变802.11a OFDM PHY的载波频率执行到新信道的移动。在所述实施方案中,转换优选地由所有的STA和AP在目标信标传输时间(TBTT)之前立即发生。
从上述中很显然,本发明的优点在于通过在当前802.11规范中很小的修改可以获得动态频率选择(DFS)机制。应该指出虽然本公开内容被限制于具有AP作为BSS里DFS的集中决策者的基于基础设施的802.11 WLAN,但是本发明可以被很容易地扩展以便支持WLAN的特设模式。
因此已经描述了用于确定WLAN系统使用的信道的动态频率选择(DFS)方法的优选实施方案,对于本领域的技术人员应该很显然已经获得了本系统的某些优点。上述被构建为仅是本发明的一个说明性实施方案。在不背离本发明的基本原理和范围的情况下,本领域的技术人员可以很容易想象提供与这个实施方案类似功能的替代实施方案。
Claims (24)
1.一种用于在接入点(AP)和位于无线局域网(WLAN)的基本业务组(BSS)的覆盖范围内的至少一个站(STA)之间动态选择通信信道的方法,所述方法包括步骤:
(a)确定是否需要被所述多个STA使用的新信道;
(b)由所述至少一个STA测量多个频率信道的信道质量;
(c)从所述多个STA向所述AP报告包括由所述多个STA测量的所有信道的接收信道强度指示(RSSI)和无干扰信道估计(CCA)忙周期的候选信道列表;以及
(d)基于所述信道质量报告选择所述候选信道之一用于所述AP和所述多个STA之间的通信。
2.如权利要求1的方法,其中所述信道信号质量还包括由另一个通信设备导致的干扰信号等级,所述干扰信号等级基于开/关忙CCA信号的周期性存在。
3.如权利要求1的方法,其中选择所述候选信道之一的所述步骤(d)基于对所述信道质量的最小干扰或者满足用于所述AP和所述多个STA之间通信的其他规定需要。
4.如权利要求1的方法,其中选择所述候选信道之一的所述步骤(d)基于所述信道是否导致对另一个通信设备的最小干扰或者满足其他规定需要。
5.如权利要求1的方法,还包括由所述AP将选择的信道信息发送到所述多个STA的步骤。
6.如权利要求1的方法,还包括将所述多个STA转换到所述新信道的步骤。
7.一种用于在接入点(AP)和位于无线局域网(WLAN)的基本业务组(BSS)的覆盖范围内的多个站(STA)之间动态选择通信信道的方法,所述方法包括步骤:
(a)确定是否需要被所述多个无线STA使用的新信道;
(b)由所述AP向所述多个STA的至少一个请求信道质量测量值;
(c)从所述至少的STA向所述AP发送多个频率信道的信道质量报告,所述信道质量报告包括由所述多个STA测量的所有信道的接收信道强度指示(RSSI)和无干扰信道估计(CCA)忙周期;
(d)确定来自临近BSS的信号是否被所述多个STA接收到;以及
(e)如果检测到所述临近BSS信号或未知类型的干扰信号,则根据所述RSSI的值基于对所述信道质量的最小干扰或者满足用于所述AP和所述多个STA之间通信的其他规定需要来选择新信道。
8.如权利要求7的方法,还包括从所述AP向所述多个STA通信关于所述新信道的信息的步骤。
9.如权利要求7的方法,还包括将所述多个STA转换到所述新信道的步骤。
10.如权利要求7的方法,其中如果所述RSSI没有超过预定阈值,则选择所述新信道。
11.如权利要求7的方法,还包括步骤:
确定是否基于开/关忙CCA信号的周期性存在来检测到由另一个通信设备引起的干扰信号等级;以及
如果是,则基于所述信道是否导致对另一个通信设备的最小干扰来选择所述新信道。
12.如权利要求7的方法,其中如果出现下列情况之一则在步骤(a)确定需要所述新信道:
(1)由所述AP形成所述BSS;
(2)所述AP或所述STA经历了坏信道情况;
(3)所述BSS与临近BSS交叠;
(4)超过预定时间周期没有出现通过所述AP的所述STA的关联;
(5)在所述BSS里检测到另一个被许可的操作者。
13.一种用于在接入点(AP)和位于无线局域网(WLAN)的基本业务组(BSS)的覆盖范围内的多个站(STA)之间动态选择通信信道的方法,所述方法包括步骤:
(a)确定是否需要被所述多个无线STA使用的新信道;
(b)确定所述多个STA是否接收到来自临近BSS的信号;
(c)测量由所述多个STA扫描的到所述AP的所有所述信道的接收信号强度指示(RSSI)和无干扰信道估计(CCA)忙周期;
(d)基于开/关忙CCA信号的周期性存在来测量由另一个通信系统引起的干扰等级;以及
(e)基于所述测量的RSSI、CCA和CCA忙信号的周期性存在来选择表示最小干扰信号等级的所述新信道。
14.如权利要求13的方法,还包括从所述AP向所述多个STA通信关于所述新信道的信息的步骤。
15.如权利要求13的方法,还包括将所述多个STA转换到所述新信道的步骤。
16.如权利要求13的方法,其中如果出现下列情况之一则在步骤(a)确定需要所述新信道:
(1)由所述AP形成所述BSS;
(2)所述AP或所述STA经历了坏信道情况;
(3)所述BSS与临近BSS交叠;
(4)超过预定时间周期没有出现通过所述AP的所述STA的关联;
(5)在所述BSS里检测到另一个被许可的操作者。
17.一种用于在接入点(AP)和位于无线局域网(WLAN)的基本业务组(BSS)的覆盖范围内的多个站(STA)之间动态选择通信信道的系统,所述系统包括:
用于确定是否需要被所述多个无线STA使用的新信道的装置;
用于由所述AP向所述多个STA的至少一个请求信道质量测量值的装置;
用于发送所述AP和所述多个STA的至少一个之间的多个频率信道的信道质量报告的装置,所述信道质量报告包括由所述多个STA测量的所有信道的接收信道强度指示(RSSI)和无干扰信道估计(CCA)忙周期;
用于确定来自临近BSS的信号是否被所述多个STA接收到的装置;以及,
如果检测到所述临近BSS信号,则用于基于对所述信道质量的最小干扰来选择新信道用于在所述AP和所述多个STA之间通信的装置。
18.如权利要求1 7的系统,还包括用于从所述AP向所述多个STA通信关于所述新信道信息的装置。
19.如权利要求17的系统,还包括用于将所述多个STA转换到所述新信道的装置。
20.如权利要求17的系统,其中如果所述RSSI超过预定阈值,则选择所述新信道。
21.如权利要求17的系统,还包括:
用于基于预定时间周期的任何802.11帧接收的周期性不存在而确定是否检测到由另一个通信设备引起的干扰信号等级的装置;以及,
用于基于所述信道是否导致对另一个通信设备的最小干扰来选择所述新信道的装置。
22.一种用于在接入点(AP)和位于无线局域网(WLAN)的基本业务组(BSS)的覆盖范围内的多个站(STA)之间动态选择通信信道的系统,所述系统包括:
用于存储计算机可读代码的存储器;以及,
被可操作地耦合到所述存储器的处理器,所述处理器被配置为:
(1)确定是否需要被所述多个无线STA使用的新信道;
(2)确定所述多个STA是否接收到来自临近BSS的信号;
(3)测量由所述多个STA扫描的到所述AP的所有所述信道的接收信号强度指示(RSSI)和无干扰信道估计(CCA)忙周期;
(4)基于预定时间周期的任何802.11帧接收的周期性不存在来测量由另一个通信系统引起的干扰等级;以及,
(5)基于所述测量的RSSI、CCA和CCA忙信号的周期性存在来选择表示最小干扰信号等级的所述新信道。
23.如权利要求22的系统,其中所述处理器还被配置来从所述AP向所述多个STA通信关于所述新信道的信息。
24.如权利要求22的系统,其中所述处理器还被配置来将所述多个STA转换到所述新信道。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29050701P | 2001-05-11 | 2001-05-11 | |
US60/290,507 | 2001-05-11 | ||
US09/976,339 | 2001-10-12 | ||
US09/976,339 US7206840B2 (en) | 2001-05-11 | 2001-10-12 | Dynamic frequency selection scheme for IEEE 802.11 WLANs |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1462523A true CN1462523A (zh) | 2003-12-17 |
Family
ID=26966225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN02801617A Pending CN1462523A (zh) | 2001-05-11 | 2002-05-06 | Ieee802.11无线局域网的动态频率选择方案 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7206840B2 (zh) |
EP (1) | EP1393502A2 (zh) |
JP (1) | JP2004520766A (zh) |
KR (1) | KR20030017618A (zh) |
CN (1) | CN1462523A (zh) |
WO (1) | WO2002093839A2 (zh) |
Cited By (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007059655A1 (fr) * | 2005-11-28 | 2007-05-31 | Zte Corporation | Methode et dispositif pour surveiller un canal de reception de radiofrequence dans un systeme de communication sans fil |
CN100394731C (zh) * | 2004-09-30 | 2008-06-11 | 三星电子株式会社 | 检测无线局域网(wlan)系统中相邻基本服务集(bss)之间的干扰 |
CN100454874C (zh) * | 2006-07-19 | 2009-01-21 | 华为技术有限公司 | 一种防止无线局域网自干扰的系统及方法 |
CN1773970B (zh) * | 2004-11-11 | 2010-04-28 | 联想(北京)有限公司 | 一种短距离无线网络信道的确定方法 |
US7792076B2 (en) | 2006-12-01 | 2010-09-07 | Cameo Communications Inc. | Method and device for automatically allocating channels of wireless network system |
CN1815915B (zh) * | 2005-01-31 | 2010-09-08 | 三星电子株式会社 | 多入多出通信设备及其信道扫描方法 |
CN101878638A (zh) * | 2007-11-20 | 2010-11-03 | 阿德利亚网络公司 | 通信网络中检测并避免干扰的方法及装置 |
CN101015172B (zh) * | 2004-07-14 | 2011-03-09 | 英特尔公司 | 用于扩展服务集网状网的分布式自配置的系统和方法 |
CN101242649B (zh) * | 2007-01-05 | 2011-06-08 | 美国博通公司 | 通信架构中的无线网络、客户端设备、接入点及操作方法 |
CN1943175B (zh) * | 2005-02-04 | 2011-07-27 | 株式会社东芝 | 多类多信道无线lan等的最佳信道分配 |
CN101433046B (zh) * | 2006-04-25 | 2012-01-18 | 微软公司 | 基于认知无线电的ofdma通信的方法和系统 |
WO2012055274A1 (zh) * | 2010-10-29 | 2012-05-03 | 中兴通讯股份有限公司 | 信道调整方法及装置 |
CN101142841B (zh) * | 2005-03-15 | 2012-05-16 | 诺基亚公司 | 用于在无线系统中选择信号的方法和布置 |
CN1787472B (zh) * | 2004-12-07 | 2012-05-16 | Lg电子株式会社 | 无线音频/视频设备的信道选择方法 |
CN101039462B (zh) * | 2006-03-17 | 2012-06-20 | 三星电子株式会社 | 在相同信道的基本服务集之间选择动态频率的方法和设备 |
CN101496321B (zh) * | 2005-09-13 | 2012-08-15 | 思科技术公司 | 用于检测主要频谱用户的系统和方法 |
CN102711113A (zh) * | 2012-05-10 | 2012-10-03 | 北京邮电大学 | 一种基于802.11ac中国高效信道兼容性的解决方法 |
CN102740376A (zh) * | 2012-06-18 | 2012-10-17 | 华为终端有限公司 | 提升数据传输性能的方法、装置和系统 |
CN102857904A (zh) * | 2012-06-21 | 2013-01-02 | 中兴通讯股份有限公司 | 热点开启方法及装置 |
CN1965534B (zh) * | 2004-04-30 | 2013-02-06 | 英特尔公司 | 用于无线网络中的信道扫描的方法和设备 |
US8570984B2 (en) | 2006-10-26 | 2013-10-29 | Lg Electronics Inc. | Method of channel assessment and channel searching in a wireless network |
CN101099317B (zh) * | 2004-11-16 | 2015-06-10 | 高通股份有限公司 | Tdd通信系统的开环速率控制 |
CN104754678A (zh) * | 2015-04-10 | 2015-07-01 | 中国电力科学研究院 | 一种无线网络中ap选择最佳信道的方法 |
CN105142233A (zh) * | 2004-08-12 | 2015-12-09 | 美商内数位科技公司 | 在ieee 802.11 ap中使用的方法及ieee 802.11 ap |
WO2016023492A1 (en) * | 2014-08-12 | 2016-02-18 | Mediatek Inc. | Method to improve channel access opportunity in a wireless communications system |
CN105376862A (zh) * | 2014-08-28 | 2016-03-02 | 上海贝尔股份有限公司 | 基于可调整竞争窗在免许可信道上传输数据的方法和装置 |
WO2016037364A1 (en) * | 2014-09-12 | 2016-03-17 | Intel Corporation | Dynamic cca scheme with interface control for 802.11 hew standard and system |
US9363795B2 (en) | 2008-01-25 | 2016-06-07 | Microsoft Technology Licensing, Llc | Orthogonal Frequency Division Multiple Access with carrier sense |
US9363120B2 (en) | 2007-05-08 | 2016-06-07 | Microsoft Technology Licensing, Llc | OFDM transmission and reception for non-OFDM signals |
CN105657755A (zh) * | 2016-01-06 | 2016-06-08 | 广东欧珀移动通信有限公司 | 一种信道的控制方法及装置 |
US9386055B2 (en) | 2006-05-12 | 2016-07-05 | Microsoft Technology Licensing, Llc | Signaling to application lack of requested bandwidth |
CN105874867A (zh) * | 2014-01-07 | 2016-08-17 | 三菱电机株式会社 | 基站、终端站和无线通信系统 |
CN106105082A (zh) * | 2014-03-12 | 2016-11-09 | 高通股份有限公司 | 用于在无执照射频谱带中传送定位参考信号的技术 |
CN106550377A (zh) * | 2015-09-18 | 2017-03-29 | 华为技术有限公司 | 通信方法、接入点和站点 |
US9641273B2 (en) | 2006-12-12 | 2017-05-02 | Microsoft Technology Licensing, Llc | Cognitive multi-user OFDMA |
US9730247B2 (en) | 2014-06-27 | 2017-08-08 | Techflux, Ltd. | Method and device for uplink transmission |
CN107155086A (zh) * | 2016-03-03 | 2017-09-12 | 佳能株式会社 | X射线摄像系统、摄像装置及信息处理方法 |
CN107211284A (zh) * | 2015-02-16 | 2017-09-26 | 微软技术许可有限责任公司 | 用户端侧动态频率选择检查 |
CN107211434A (zh) * | 2015-01-23 | 2017-09-26 | 阿尔卡特朗讯 | 用于管理无线接入点的操作的方法、系统和计算机程序产品 |
CN107580318A (zh) * | 2016-07-04 | 2018-01-12 | 智易科技股份有限公司 | 选择执行特定功能的通信接口的方法与系统 |
CN108605033A (zh) * | 2016-12-01 | 2018-09-28 | 华为技术有限公司 | 一种信道选择方法及设备 |
CN108616961A (zh) * | 2016-12-16 | 2018-10-02 | 华为技术有限公司 | 一种Wi-Fi接入的方法以及设备 |
CN109495154A (zh) * | 2012-03-08 | 2019-03-19 | 雅马哈株式会社 | 无线中继装置、无线中继方法 |
CN112911685A (zh) * | 2021-01-29 | 2021-06-04 | 成都极米科技股份有限公司 | 无线局域网扫描和同步的方法、终端及存储介质 |
US11109408B2 (en) | 2019-08-16 | 2021-08-31 | Techflux, Inc. | Method and device for uplink transmission |
Families Citing this family (348)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7095754B2 (en) | 2000-11-03 | 2006-08-22 | At&T Corp. | Tiered contention multiple access (TCMA): a method for priority-based shared channel access |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
KR101069306B1 (ko) * | 2001-05-14 | 2011-10-05 | 인터디지탈 테크날러지 코포레이션 | 다운링크 자원 할당을 위한 채널 품질 측정값 제공 방법, 무선 디지털 통신 시스템 및 사용자 장치 |
US7120138B2 (en) * | 2001-07-02 | 2006-10-10 | Koninklijke Philips Electronics N.V. | Dynamic frequency selection with recovery for a basic service set network |
US7136361B2 (en) | 2001-07-05 | 2006-11-14 | At&T Corp. | Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation |
US7277413B2 (en) * | 2001-07-05 | 2007-10-02 | At & T Corp. | Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation |
US7349433B2 (en) * | 2001-11-01 | 2008-03-25 | Texas Instruments Incorporated | Signaling for parameterized quality of service (QoS) support |
US7280517B2 (en) | 2001-11-02 | 2007-10-09 | At&T Corp. | Wireless LANs and neighborhood capture |
US7277415B2 (en) * | 2001-11-02 | 2007-10-02 | At&T Corp. | Staggered startup for cyclic prioritized multiple access (CPMA) contention-free sessions |
US7245604B2 (en) | 2001-11-02 | 2007-07-17 | At&T Corp. | Fixed deterministic post-backoff for cyclic prioritized multiple access (CPMA) contention-free sessions |
US7245605B2 (en) | 2001-11-02 | 2007-07-17 | At&T Corp. | Preemptive packet for maintaining contiguity in cyclic prioritized multiple access (CPMA) contention-free sessions |
US7248600B2 (en) | 2001-11-02 | 2007-07-24 | At&T Corp. | ‘Shield’: protecting high priority channel access attempts in overlapped wireless cells |
US6788658B1 (en) | 2002-01-11 | 2004-09-07 | Airflow Networks | Wireless communication system architecture having split MAC layer |
US8027637B1 (en) | 2002-01-11 | 2011-09-27 | Broadcom Corporation | Single frequency wireless communication system |
US7876704B1 (en) | 2002-01-11 | 2011-01-25 | Broadcom Corporation | Tunneling protocols for wireless communications |
US7672274B2 (en) | 2002-01-11 | 2010-03-02 | Broadcom Corporation | Mobility support via routing |
US7149196B1 (en) | 2002-01-11 | 2006-12-12 | Broadcom Corporation | Location tracking in a wireless communication system using power levels of packets received by repeaters |
US7689210B1 (en) | 2002-01-11 | 2010-03-30 | Broadcom Corporation | Plug-n-playable wireless communication system |
US7515557B1 (en) | 2002-01-11 | 2009-04-07 | Broadcom Corporation | Reconfiguration of a communication system |
US6760318B1 (en) * | 2002-01-11 | 2004-07-06 | Airflow Networks | Receiver diversity in a communication system |
US6862448B1 (en) * | 2002-01-11 | 2005-03-01 | Broadcom Corporation | Token-based receiver diversity |
US7352728B2 (en) * | 2002-03-07 | 2008-04-01 | Koninklijke Philips Electronics N.V. | Fast channel switching scheme for IEEE 802.11 WLANs |
ATE514297T1 (de) * | 2002-03-08 | 2011-07-15 | Koninkl Philips Electronics Nv | Verfahren und system zur bereitstellung eines einzigen ruhestellungs-/messanforderungselements für vereinte kanäle in einem drahtlosen lokalen netzwerk gemäss 802.11 |
JP3888205B2 (ja) * | 2002-04-04 | 2007-02-28 | セイコーエプソン株式会社 | 無線通信管理装置 |
US7319688B2 (en) * | 2002-05-06 | 2008-01-15 | Extricom Ltd. | LAN with message interleaving |
US20030206532A1 (en) * | 2002-05-06 | 2003-11-06 | Extricom Ltd. | Collaboration between wireless lan access points |
US6799054B2 (en) * | 2002-05-06 | 2004-09-28 | Extricom, Ltd. | Collaboration between wireless LAN access points using wired lan infrastructure |
US7355994B2 (en) | 2002-05-06 | 2008-04-08 | Extricom Ltd. | CDMA messaging between wireless LAN access points |
US20030214967A1 (en) * | 2002-05-17 | 2003-11-20 | Heberling Allen D. | Method of remote channel quality determination |
US7212837B1 (en) * | 2002-05-24 | 2007-05-01 | Airespace, Inc. | Method and system for hierarchical processing of protocol information in a wireless LAN |
US7113498B2 (en) | 2002-06-05 | 2006-09-26 | Broadcom Corporation | Virtual switch |
US7327697B1 (en) | 2002-06-25 | 2008-02-05 | Airespace, Inc. | Method and system for dynamically assigning channels across multiple radios in a wireless LAN |
US7593356B1 (en) * | 2002-06-25 | 2009-09-22 | Cisco Systems, Inc. | Method and system for dynamically assigning channels across multiple access elements in a wireless LAN |
US20050195786A1 (en) * | 2002-08-07 | 2005-09-08 | Extricom Ltd. | Spatial reuse of frequency channels in a WLAN |
US7697549B2 (en) * | 2002-08-07 | 2010-04-13 | Extricom Ltd. | Wireless LAN control over a wired network |
US7155230B2 (en) * | 2002-08-19 | 2006-12-26 | Intel Corporation | Dynamic frequency selection and radar detection with a wireless LAN |
US20060171335A1 (en) * | 2005-02-03 | 2006-08-03 | Michael Yuen | Backup channel selection in wireless LANs |
US6941143B2 (en) * | 2002-08-29 | 2005-09-06 | Thomson Licensing, S.A. | Automatic channel selection in a radio access network |
US7231215B2 (en) * | 2002-11-07 | 2007-06-12 | Infineon Technologies Wireless Solutions Sweden Ab | Method and a central control unit for channel switching in a packet-based wireless communication network |
US7920538B2 (en) * | 2003-12-08 | 2011-04-05 | Investors Life Insurance Company | Spectral reuse transceiver-based aggregation of disjoint, relatively narrow bandwidth (voice) channel segments of radio spectrum for wideband RF communication applications |
JP3742057B2 (ja) | 2002-12-25 | 2006-02-01 | 株式会社バッファロー | 無線情報通信における電波状態の解析技術 |
US7738848B2 (en) * | 2003-01-14 | 2010-06-15 | Interdigital Technology Corporation | Received signal to noise indicator |
US20040235423A1 (en) * | 2003-01-14 | 2004-11-25 | Interdigital Technology Corporation | Method and apparatus for network management using perceived signal to noise and interference indicator |
EP1443661B1 (en) * | 2003-01-28 | 2009-06-24 | Sony Deutschland GmbH | Method for operating an RLAN arrangement |
US7606193B2 (en) * | 2003-01-30 | 2009-10-20 | Atheros Communications, Inc. | Methods for implementing a dynamic frequency selection (DFS) feature for WLAN devices |
WO2004071021A1 (ja) * | 2003-02-03 | 2004-08-19 | Sony Corporation | 通信方法及び通信装置、並びにコンピュータプログラム |
KR20040072072A (ko) * | 2003-02-08 | 2004-08-18 | 삼성전자주식회사 | 무선 데이터 송신/수신 장치 및 송신/수신 방법 |
US7174170B2 (en) * | 2003-02-12 | 2007-02-06 | Nortel Networks Limited | Self-selection of radio frequency channels to reduce co-channel and adjacent channel interference in a wireless distributed network |
AU2003294160A1 (en) * | 2003-02-11 | 2004-09-06 | Nortel Networks Limited | Minimization of radio resource usage in multi-hop networks with multiple routings |
JP3632693B2 (ja) * | 2003-02-17 | 2005-03-23 | Kddi株式会社 | 異なる無線通信メディアの切替方法及びその通信状態測定方法 |
US7869822B2 (en) | 2003-02-24 | 2011-01-11 | Autocell Laboratories, Inc. | Wireless network apparatus and system field of the invention |
US9661519B2 (en) * | 2003-02-24 | 2017-05-23 | Qualcomm Incorporated | Efficient reporting of information in a wireless communication system |
US7307972B2 (en) * | 2003-02-24 | 2007-12-11 | Autocell Laboratories, Inc. | Apparatus for selecting an optimum access point in a wireless network on a common channel |
US7506018B2 (en) * | 2003-02-28 | 2009-03-17 | Siemens Communications, Inc. | Methods and apparatus for determining one or more access points in a communication system |
KR100555923B1 (ko) * | 2003-03-07 | 2006-03-03 | 삼성전자주식회사 | 무선랜 시스템 및 그 사용방법 |
US7065376B2 (en) * | 2003-03-20 | 2006-06-20 | Microsoft Corporation | Multi-radio unification protocol |
US7508801B1 (en) | 2003-03-21 | 2009-03-24 | Cisco Systems, Inc. | Light-weight access point protocol |
US7313113B1 (en) | 2003-04-04 | 2007-12-25 | Airespace, Inc. | Dynamic transmit power configuration system for wireless network environments |
US7346338B1 (en) | 2003-04-04 | 2008-03-18 | Airespace, Inc. | Wireless network system including integrated rogue access point detection |
US7301926B1 (en) | 2003-04-04 | 2007-11-27 | Airespace, Inc. | Automatic coverage hole detection in computer network environments |
US7342906B1 (en) | 2003-04-04 | 2008-03-11 | Airespace, Inc. | Distributed wireless network security system |
DE10320176B3 (de) * | 2003-05-06 | 2004-12-09 | Infineon Technologies Ag | Verfahren zur Selektion der Frequenzkanäle eines ein Frequenzsprungverfahren verwendenden Funksystems |
AU2004237484B2 (en) * | 2003-05-09 | 2009-06-18 | Koninklijke Philips Electronics N.V. | System and method for measurement report time stamping to ensure reference time correctness |
CN1784865B (zh) * | 2003-05-09 | 2013-07-17 | 皇家飞利浦电子股份有限公司 | 用于测量报告时间印记以保证基准时间正确性的方法 |
US6980810B1 (en) * | 2003-05-12 | 2005-12-27 | At&T Corp. | Point coordinated spread-spectrum wireless local area network |
TWI467960B (zh) * | 2003-05-14 | 2015-01-01 | Intel Corp | 用於信標報告傳輸之無線發射接收單元及其使用方法 |
US7990883B2 (en) * | 2003-05-16 | 2011-08-02 | Sony Corporation | Communication system, communication method, communication apparatus, communication control method, and computer program |
EP1480384A1 (de) * | 2003-05-21 | 2004-11-24 | Swisscom AG | System für die dynamische Zuweisung von Trägerfrequenzen zu Zugriffspunkten eines lokalen Funknetzes (WLAN) |
US7340247B1 (en) | 2003-05-29 | 2008-03-04 | Airespace, Inc. | Wireless network infrastructure including wireless discovery and communication mechanism |
US7539169B1 (en) | 2003-06-30 | 2009-05-26 | Cisco Systems, Inc. | Directed association mechanism in wireless network environments |
US7643442B1 (en) | 2003-06-30 | 2010-01-05 | Cisco Systems, Inc. | Dynamic QoS configuration based on transparent processing of session initiation messages |
US7453840B1 (en) | 2003-06-30 | 2008-11-18 | Cisco Systems, Inc. | Containment of rogue systems in wireless network environments |
US20050007979A1 (en) * | 2003-07-07 | 2005-01-13 | Intel Corporation | Uniform channel spreading in a wireless local area network using dynamic frequency selection |
SE0302068D0 (sv) * | 2003-07-14 | 2003-07-14 | Infineon Technologies Ag | A system operable to transmit and receive messages |
US6958982B2 (en) | 2003-07-16 | 2005-10-25 | Interdigital Technology Corporation | Method and apparatus for storing mobile station physical measurements and MAC performance statistics in a management information base of an access point |
GEP20105122B (en) | 2003-07-16 | 2010-11-25 | Interdigital Tech Corp | Method and system for transferring information between network management entities of a wireless communication system |
US20050128977A1 (en) * | 2003-07-23 | 2005-06-16 | Interdigital Technology Corporation | Method and apparatus for determining and managing congestion in a wireless communications system |
US8005055B2 (en) | 2003-07-23 | 2011-08-23 | Interdigital Technology Corporation | Method and apparatus for determining and managing congestion in a wireless communications system |
WO2005011307A2 (en) * | 2003-07-24 | 2005-02-03 | Koninklijke Philips Electronics, N.V. | Admission control to wireless network based on guaranteed transmission rate |
JP4211529B2 (ja) * | 2003-08-06 | 2009-01-21 | 日本電気株式会社 | チャネル選択方法及びそれに用いる無線局並びにプログラム |
PL2600540T3 (pl) * | 2003-08-06 | 2019-08-30 | Optis Wireless Technology, Llc | Urządzenie komunikacji bezprzewodowej i sposób komunikacji bezprzewodowej |
US8442019B2 (en) * | 2003-08-12 | 2013-05-14 | Bose Corporation | Method and apparatus for avoiding wireless audio signal transmission interferences |
US7474677B2 (en) * | 2003-08-12 | 2009-01-06 | Bose Corporation | Wireless communicating |
US7245877B2 (en) * | 2003-08-12 | 2007-07-17 | Intel Corporation | Wireless local area network detection |
JP2005123833A (ja) * | 2003-10-16 | 2005-05-12 | Hitachi Ltd | 位置検出システム制御方法 |
US7363008B2 (en) * | 2003-10-30 | 2008-04-22 | Microsoft Corporation | Spectrum sharing in the unlicensed band |
US7817534B2 (en) * | 2003-11-10 | 2010-10-19 | Motorola, Inc. | Method and apparatus for interrupting a transmission of a multicast signal |
US7454214B2 (en) * | 2003-12-01 | 2008-11-18 | Interdigital Technology Corporation | Wireless communication method and apparatus for optimizing access point channel selection |
US7486616B2 (en) * | 2003-12-16 | 2009-02-03 | Intel Corporation | Preemptive dynamic frequency selection |
US7450904B2 (en) * | 2004-01-08 | 2008-11-11 | Interdigital Technology Corporation | Escape mechanism for a wireless local area network |
US7443821B2 (en) * | 2004-01-08 | 2008-10-28 | Interdigital Technology Corporation | Method for clear channel assessment optimization in a wireless local area network |
US7949342B2 (en) * | 2004-01-08 | 2011-05-24 | Interdigital Technology Corporation | Radio resource management in wireless local area networks |
JP2005198154A (ja) | 2004-01-09 | 2005-07-21 | Seiko Epson Corp | 無線通信機器の設定方法 |
US7260408B2 (en) * | 2004-02-20 | 2007-08-21 | Airespace, Inc. | Wireless node location mechanism using antenna pattern diversity to enhance accuracy of location estimates |
US7286833B2 (en) | 2004-02-27 | 2007-10-23 | Airespace, Inc. | Selective termination of wireless connections to refresh signal information in wireless node location infrastructure |
US7636336B2 (en) * | 2004-03-03 | 2009-12-22 | The Trustees Of Columbia University In The City Of New York | Methods and systems for reducing MAC layer handoff latency in wireless networks |
US7205938B2 (en) * | 2004-03-05 | 2007-04-17 | Airespace, Inc. | Wireless node location mechanism responsive to observed propagation characteristics of wireless network infrastructure signals |
US11244545B2 (en) | 2004-03-16 | 2022-02-08 | Icontrol Networks, Inc. | Cross-client sensor user interface in an integrated security network |
US10142392B2 (en) | 2007-01-24 | 2018-11-27 | Icontrol Networks, Inc. | Methods and systems for improved system performance |
US10721087B2 (en) | 2005-03-16 | 2020-07-21 | Icontrol Networks, Inc. | Method for networked touchscreen with integrated interfaces |
US11811845B2 (en) * | 2004-03-16 | 2023-11-07 | Icontrol Networks, Inc. | Communication protocols over internet protocol (IP) networks |
US20050216302A1 (en) | 2004-03-16 | 2005-09-29 | Icontrol Networks, Inc. | Business method for premises management |
US11916870B2 (en) | 2004-03-16 | 2024-02-27 | Icontrol Networks, Inc. | Gateway registry methods and systems |
US12063220B2 (en) | 2004-03-16 | 2024-08-13 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US11190578B2 (en) | 2008-08-11 | 2021-11-30 | Icontrol Networks, Inc. | Integrated cloud system with lightweight gateway for premises automation |
US10127802B2 (en) | 2010-09-28 | 2018-11-13 | Icontrol Networks, Inc. | Integrated security system with parallel processing architecture |
US10339791B2 (en) | 2007-06-12 | 2019-07-02 | Icontrol Networks, Inc. | Security network integrated with premise security system |
US10522026B2 (en) | 2008-08-11 | 2019-12-31 | Icontrol Networks, Inc. | Automation system user interface with three-dimensional display |
US11582065B2 (en) | 2007-06-12 | 2023-02-14 | Icontrol Networks, Inc. | Systems and methods for device communication |
US10237237B2 (en) | 2007-06-12 | 2019-03-19 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US11343380B2 (en) | 2004-03-16 | 2022-05-24 | Icontrol Networks, Inc. | Premises system automation |
US11677577B2 (en) | 2004-03-16 | 2023-06-13 | Icontrol Networks, Inc. | Premises system management using status signal |
US11368429B2 (en) | 2004-03-16 | 2022-06-21 | Icontrol Networks, Inc. | Premises management configuration and control |
US9729342B2 (en) | 2010-12-20 | 2017-08-08 | Icontrol Networks, Inc. | Defining and implementing sensor triggered response rules |
US11489812B2 (en) | 2004-03-16 | 2022-11-01 | Icontrol Networks, Inc. | Forming a security network including integrated security system components and network devices |
US20170118037A1 (en) | 2008-08-11 | 2017-04-27 | Icontrol Networks, Inc. | Integrated cloud system for premises automation |
WO2005094009A1 (ja) * | 2004-03-26 | 2005-10-06 | Sharp Kabushiki Kaisha | 管理装置、通信装置、通信システム、通信管理方法、通信管理プログラムおよびそれを記録したコンピュータ読み取り可能な記録媒体 |
US7515913B2 (en) * | 2004-03-29 | 2009-04-07 | Agere Systems Inc. | Method and apparatus for automatic change of an operating channel in a wireless communication system |
US7840227B2 (en) * | 2004-04-06 | 2010-11-23 | Koninklijke Philips Electronics N.V. | Location based handoff for mobile devices |
KR100538775B1 (ko) | 2004-04-09 | 2005-12-23 | 전자부품연구원 | 무선통신 시스템에서의 다양한 간섭신호에 대한 지능형채널 선택 방법 및 장치 및 이를 이용한 수신기 |
JP2005303788A (ja) * | 2004-04-14 | 2005-10-27 | Matsushita Electric Ind Co Ltd | 無線装置 |
KR100603560B1 (ko) | 2004-04-16 | 2006-07-24 | 삼성전자주식회사 | 무선 랜 시스템에서의 동적 채널 선택장치 및 그 방법 |
US7710923B2 (en) * | 2004-05-07 | 2010-05-04 | Interdigital Technology Corporation | System and method for implementing a media independent handover |
US9246698B2 (en) * | 2004-05-07 | 2016-01-26 | Nokia Technologies Oy | Apparatus, and associated method, for facilitating a radio resource measurement in a radio communication system |
US7433696B2 (en) * | 2004-05-18 | 2008-10-07 | Cisco Systems, Inc. | Wireless node location mechanism featuring definition of search region to optimize location computation |
GB2414896A (en) * | 2004-06-01 | 2005-12-07 | Toshiba Res Europ Ltd | WLAN load balancing |
US8605691B2 (en) * | 2004-07-09 | 2013-12-10 | Koninklijke Philips N.V. | Enhanced site report by low latency roaming by passive scanning in IEEE 802.11 networks |
KR100630355B1 (ko) | 2004-08-04 | 2006-09-29 | 한국전자통신연구원 | 무선 랜에서의 프레임 브리지 제공 장치 및 그 방법 |
US7529218B2 (en) | 2004-08-25 | 2009-05-05 | Cisco Technology, Inc. | High density WLAN system |
KR100703683B1 (ko) * | 2004-08-27 | 2007-04-05 | 삼성전자주식회사 | 무선 네트워크 장치 및 이를 이용한 채널 이동 방법 |
US7286835B1 (en) * | 2004-09-10 | 2007-10-23 | Airespace, Inc. | Enhanced wireless node location using differential signal strength metric |
US8233450B2 (en) * | 2004-09-10 | 2012-07-31 | Interdigital Technology Corporation | Wireless communication methods and components for facilitating multiple network type compatibility |
US20060056344A1 (en) * | 2004-09-10 | 2006-03-16 | Interdigital Technology Corporation | Seamless channel change in a wireless local area network |
EP1638265A1 (en) * | 2004-09-15 | 2006-03-22 | Institut Eurecom G.I.E. | Process for regulating the traffic of an Adhoc network |
EP1794901B1 (en) * | 2004-09-30 | 2014-02-26 | LG Electronics Inc. | Method of receiving and transmitting data and estimating channel information in ofdm/ofdma mobile communications system |
US20090019084A1 (en) * | 2004-10-04 | 2009-01-15 | T. Rad Co., Ltd. | Method and system for preloading |
JP4991552B2 (ja) * | 2004-10-29 | 2012-08-01 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ネットワークのネットワークノードの動作方法、ネットワークノード、ネットワークシステム、コンピュータ可読媒体及びプログラム要素 |
US7516174B1 (en) | 2004-11-02 | 2009-04-07 | Cisco Systems, Inc. | Wireless network security mechanism including reverse network address translation |
US7457262B1 (en) | 2004-11-05 | 2008-11-25 | Cisco Systems, Inc. | Graphical display of status information in a wireless network management system |
US7738871B2 (en) * | 2004-11-05 | 2010-06-15 | Interdigital Technology Corporation | Wireless communication method and system for implementing media independent handover between technologically diversified access networks |
WO2006052759A2 (en) * | 2004-11-05 | 2006-05-18 | Meshnetworks, Inc. | System and method for dynamic frequency selection in a multihopping wireless network |
US8737920B2 (en) * | 2004-11-10 | 2014-05-27 | Interdigital Technology Corporation | Method and apparatus for managing wireless communication network radio resources |
US7573851B2 (en) * | 2004-12-07 | 2009-08-11 | Adaptix, Inc. | Method and system for switching antenna and channel assignments in broadband wireless networks |
KR100623375B1 (ko) | 2004-12-13 | 2006-09-19 | 엘지전자 주식회사 | 무선 랜의 통신채널 선택방법 |
KR100677216B1 (ko) * | 2004-12-14 | 2007-02-02 | 엘지전자 주식회사 | 무선 랜 기반 모바일 장치의 원격 스캐닝을 이용한네트워크 채널 선택 방법 |
CN101080938A (zh) * | 2004-12-15 | 2007-11-28 | 皇家飞利浦电子股份有限公司 | 有功率控制功能的多播通信系统 |
US7787435B2 (en) * | 2005-01-13 | 2010-08-31 | Samsung Electronics Co., Ltd. | Method and system for polling mobile stations in a wireless network |
US20060217147A1 (en) * | 2005-01-18 | 2006-09-28 | Interdigital Technology Corporation | Method and system for system discovery and user selection |
US20060159047A1 (en) * | 2005-01-18 | 2006-07-20 | Interdigital Technology Corporation | Method and system for context transfer across heterogeneous networks |
US20060171304A1 (en) * | 2005-02-03 | 2006-08-03 | Hill David R | WLAN background scanning |
US20060171305A1 (en) * | 2005-02-03 | 2006-08-03 | Autocell Laboratories, Inc. | Access point channel forecasting for seamless station association transition |
US7596376B2 (en) | 2005-02-18 | 2009-09-29 | Cisco Technology, Inc. | Methods, apparatuses and systems facilitating client handoffs in wireless network systems |
US7805140B2 (en) | 2005-02-18 | 2010-09-28 | Cisco Technology, Inc. | Pre-emptive roaming mechanism allowing for enhanced QoS in wireless network environments |
US8219091B2 (en) * | 2005-03-14 | 2012-07-10 | Interdigital Technology Corporation | Wireless communication method and system for conveying media independent handover capability information |
US7616956B2 (en) * | 2005-03-15 | 2009-11-10 | Interdigital Technology Corporation | Measurement request report extensions for media independent handover |
US11700142B2 (en) | 2005-03-16 | 2023-07-11 | Icontrol Networks, Inc. | Security network integrating security system and network devices |
US11496568B2 (en) | 2005-03-16 | 2022-11-08 | Icontrol Networks, Inc. | Security system with networked touchscreen |
US20110128378A1 (en) | 2005-03-16 | 2011-06-02 | Reza Raji | Modular Electronic Display Platform |
US20120324566A1 (en) | 2005-03-16 | 2012-12-20 | Marc Baum | Takeover Processes In Security Network Integrated With Premise Security System |
US20170180198A1 (en) | 2008-08-11 | 2017-06-22 | Marc Baum | Forming a security network including integrated security system components |
US11615697B2 (en) | 2005-03-16 | 2023-03-28 | Icontrol Networks, Inc. | Premise management systems and methods |
US10999254B2 (en) | 2005-03-16 | 2021-05-04 | Icontrol Networks, Inc. | System for data routing in networks |
US20060218271A1 (en) * | 2005-03-16 | 2006-09-28 | Nokia Corporation | Triggered statistics reporting |
EP1720289B1 (en) * | 2005-05-02 | 2012-03-14 | Mitsubishi Denki Kabushiki Kaisha | Method and device for managing signal measurements in a wireless network |
US7599686B2 (en) * | 2005-05-06 | 2009-10-06 | Dell Products L.P. | Systems and methods for RF spectrum management |
EP1882313A2 (en) * | 2005-05-12 | 2008-01-30 | Koninklijke Philips Electronics N.V. | An adaptive mac protocol based on multi-user detection |
US7746825B2 (en) * | 2005-05-16 | 2010-06-29 | Interdigital Technology Corporation | Method and system for integrating media independent handovers |
US9055552B2 (en) | 2005-06-16 | 2015-06-09 | Qualcomm Incorporated | Quick paging channel with reduced probability of missed page |
KR100755691B1 (ko) * | 2005-06-28 | 2007-09-05 | 삼성전자주식회사 | 이동 노드의 핸드오버 수행 방법 및 이를 위한 네트워크 시스템 |
JP2007019618A (ja) * | 2005-07-05 | 2007-01-25 | Matsushita Electric Ind Co Ltd | システム共存を可能とする送受信装置及び送受信方法 |
US7474615B2 (en) * | 2005-07-11 | 2009-01-06 | Dell Products L.P. | Network optimization based on traffic prioritization |
US7551641B2 (en) | 2005-07-26 | 2009-06-23 | Dell Products L.P. | Systems and methods for distribution of wireless network access |
US20070026868A1 (en) * | 2005-07-26 | 2007-02-01 | Schulz Gary D | Licensed/unlicensed frequency management in a wireless wide-area network |
US7602747B2 (en) * | 2005-07-29 | 2009-10-13 | Intel Corporation | Systems and methods increased mobility among mobile nodes in a wireless network |
TW200721861A (en) * | 2005-09-09 | 2007-06-01 | Nokia Corp | Use of measurement pilot for radio measurement in a wireless network |
KR101243681B1 (ko) * | 2005-09-16 | 2013-03-14 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 동적 스펙트럼 액세스 무선 시스템에서의 스펙트럼 관리 |
KR101252725B1 (ko) * | 2005-09-16 | 2013-04-08 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 동적 스펙트럼 액세스 무선 시스템에서 점유 사용자로의통지 |
US20070070937A1 (en) * | 2005-09-28 | 2007-03-29 | Mustafa Demirhan | Multi-radio mesh network channel selection and load balancing |
JP4727367B2 (ja) * | 2005-09-29 | 2011-07-20 | 株式会社ナカヨ通信機 | アクセスポイントおよび無線lanシステム |
US20070093208A1 (en) * | 2005-09-30 | 2007-04-26 | Arati Manjeshwar | Method and system for providing interference avoidance and network coexistence in wireless systems |
US7656892B2 (en) * | 2005-09-30 | 2010-02-02 | Intel Corporation | Method and apparatus of multi-entity wireless communication adapter |
US8018894B2 (en) * | 2005-09-30 | 2011-09-13 | Interdigital Technology Corporation | Method and apparatus for implementing a blind seamless channel change |
US7339915B2 (en) * | 2005-10-11 | 2008-03-04 | Cisco Technology, Inc. | Virtual LAN override in a multiple BSSID mode of operation |
US8923211B2 (en) | 2005-10-27 | 2014-12-30 | Qualcomm Incorporated | Method and apparatus of processing an access grant block in wireless communication systems |
US20090207790A1 (en) * | 2005-10-27 | 2009-08-20 | Qualcomm Incorporated | Method and apparatus for settingtuneawaystatus in an open state in wireless communication system |
US8411616B2 (en) | 2005-11-03 | 2013-04-02 | Piccata Fund Limited Liability Company | Pre-scan for wireless channel selection |
DK1952564T3 (da) * | 2005-11-04 | 2013-10-28 | Nokia Corp | Mekanisme til overvågning af multicast-leveringskvalitet |
CN101305628A (zh) * | 2005-11-07 | 2008-11-12 | 汤姆森特许公司 | 在正交频分复用网络中用于动态频率选择的装置和方法 |
KR100749848B1 (ko) * | 2005-11-11 | 2007-08-16 | 한국전자통신연구원 | 휴대 인터넷 시스템에서의 채널 스캐닝 장치 및 방법 |
US9137072B2 (en) | 2005-12-22 | 2015-09-15 | Qualcomm Incorporated | Methods and apparatus for communicating control information |
US20070149132A1 (en) | 2005-12-22 | 2007-06-28 | Junyl Li | Methods and apparatus related to selecting control channel reporting formats |
US9125092B2 (en) | 2005-12-22 | 2015-09-01 | Qualcomm Incorporated | Methods and apparatus for reporting and/or using control information |
US9338767B2 (en) | 2005-12-22 | 2016-05-10 | Qualcomm Incorporated | Methods and apparatus of implementing and/or using a dedicated control channel |
EP1804424A1 (en) | 2005-12-27 | 2007-07-04 | THOMSON Licensing | Method for dynamically selecting a channel in a wireless local area network |
CN101001438B (zh) * | 2006-01-10 | 2010-12-08 | 华为技术有限公司 | 相邻基站间协商工作信道的方法 |
US8451808B2 (en) | 2006-02-18 | 2013-05-28 | Intel Corporation | Techniques for 40 megahertz (MHz) channel switching |
TWI474694B (zh) * | 2006-02-22 | 2015-02-21 | Koninkl Philips Electronics Nv | 於展頻快速無線電網路中用於安靜期管理的二階架構之系統、裝置及方法 |
JP4750607B2 (ja) * | 2006-04-05 | 2011-08-17 | キヤノン株式会社 | システム、情報処理装置、管理方法及びプログラム |
TWI316345B (en) * | 2006-04-28 | 2009-10-21 | Hon Hai Prec Ind Co Ltd | System and method for identifying beacon |
US20100061256A1 (en) * | 2006-05-25 | 2010-03-11 | Agency For Science, Technology And Research | Methods of Determining Whether a Frequency Channel is Available for Data Transmission for a Communication Device |
US7821986B2 (en) | 2006-05-31 | 2010-10-26 | Cisco Technology, Inc. | WLAN infrastructure provided directions and roaming |
US8830549B2 (en) | 2006-06-09 | 2014-09-09 | Koninklijke Philips N.V. | Holographic dislpay using liquid crystal display device operating with unpolorized light |
US10079839B1 (en) | 2007-06-12 | 2018-09-18 | Icontrol Networks, Inc. | Activation of gateway device |
US12063221B2 (en) | 2006-06-12 | 2024-08-13 | Icontrol Networks, Inc. | Activation of gateway device |
WO2008001291A2 (en) * | 2006-06-28 | 2008-01-03 | Koninklijke Philips Electronics, N.V. | Distributed rendezvous channel and frequency channel grouping mechanisms for multi-channel wireless systems |
JP5110819B2 (ja) * | 2006-07-31 | 2012-12-26 | キヤノン株式会社 | サーバー及びサーバーの制御方法 |
US7499718B2 (en) * | 2006-08-01 | 2009-03-03 | Cisco Technology, Inc. | Enhanced coverage hole detection in wireless networks |
KR100871240B1 (ko) * | 2006-08-18 | 2008-11-28 | 삼성전자주식회사 | 방송 시스템에서 단말기가 스트리밍 서비스의 수신율을보고하는 방법 및 장치와 그 시스템 |
US7782828B2 (en) * | 2006-08-22 | 2010-08-24 | Computer Associates Think, Inc. | Method and system for managing channels in a wireless network |
US10013381B2 (en) | 2006-08-31 | 2018-07-03 | Bose Corporation | Media playing from a docked handheld media device |
KR101210335B1 (ko) * | 2006-09-15 | 2012-12-10 | 삼성전자주식회사 | 무선 메쉬 네트워크에서 cca 기능을 수행하는 방법 및이를 이용한 이동 단말기 |
US8050200B2 (en) | 2006-10-04 | 2011-11-01 | Marvell World Trade Ltd. | Opportunistic 40 MHz mode of transmission in wireless transmitters |
CN101174851B (zh) * | 2006-11-03 | 2012-11-21 | 华为技术有限公司 | 邻站干扰检测、干扰邻站识别的方法和装置 |
US20080112373A1 (en) * | 2006-11-14 | 2008-05-15 | Extricom Ltd. | Dynamic BSS allocation |
US7974299B1 (en) | 2006-11-27 | 2011-07-05 | Marvell International Ltd. | Methods and apparatus for switching transmission channels |
US9137672B2 (en) * | 2006-12-09 | 2015-09-15 | Broadcom Corporation | Method and system for coexistence between 20 MHz and 40 MHz overlapping basic service sets (OBSS) in wireless local area networks |
TWI330477B (en) * | 2006-12-28 | 2010-09-11 | Quanta Comp Inc | Computer device and low power device for detecting wireless access ability |
JP4976505B2 (ja) | 2007-01-13 | 2012-07-18 | サムスン エレクトロニクス カンパニー リミテッド | 無線通信システムにおける多重周波数帯域を使用する信号送受信方法及びそのシステム |
US11706279B2 (en) | 2007-01-24 | 2023-07-18 | Icontrol Networks, Inc. | Methods and systems for data communication |
US7633385B2 (en) | 2007-02-28 | 2009-12-15 | Ucontrol, Inc. | Method and system for communicating with and controlling an alarm system from a remote server |
US7929623B2 (en) * | 2007-03-30 | 2011-04-19 | Microsoft Corporation | FEC in cognitive multi-user OFDMA |
US8451986B2 (en) | 2007-04-23 | 2013-05-28 | Icontrol Networks, Inc. | Method and system for automatically providing alternate network access for telecommunications |
US8363578B1 (en) * | 2007-04-23 | 2013-01-29 | Marvell International Ltd. | Bandwidth selection method and apparatus |
US12003387B2 (en) | 2012-06-27 | 2024-06-04 | Comcast Cable Communications, Llc | Control system user interface |
US11423756B2 (en) | 2007-06-12 | 2022-08-23 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US11212192B2 (en) | 2007-06-12 | 2021-12-28 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US11646907B2 (en) | 2007-06-12 | 2023-05-09 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US11218878B2 (en) | 2007-06-12 | 2022-01-04 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US11316753B2 (en) | 2007-06-12 | 2022-04-26 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
US10523689B2 (en) | 2007-06-12 | 2019-12-31 | Icontrol Networks, Inc. | Communication protocols over internet protocol (IP) networks |
US11601810B2 (en) | 2007-06-12 | 2023-03-07 | Icontrol Networks, Inc. | Communication protocols in integrated systems |
KR100988507B1 (ko) | 2007-06-27 | 2010-10-18 | 삼성전자주식회사 | 무선통신 시스템의 동적 주파수 할당 장치 및 방법 |
US7596461B2 (en) * | 2007-07-06 | 2009-09-29 | Cisco Technology, Inc. | Measurement of air quality in wireless networks |
US8369782B1 (en) | 2007-08-13 | 2013-02-05 | Marvell International Ltd. | Bluetooth wideband scan mode |
US11831462B2 (en) | 2007-08-24 | 2023-11-28 | Icontrol Networks, Inc. | Controlling data routing in premises management systems |
US8577305B1 (en) | 2007-09-21 | 2013-11-05 | Marvell International Ltd. | Circuits and methods for generating oscillating signals |
US8918097B2 (en) * | 2007-11-28 | 2014-12-23 | Motorola Mobility Llc | Managing service in an access network for wireless communication |
US8588705B1 (en) | 2007-12-11 | 2013-11-19 | Marvell International Ltd. | System and method of determining Power over Ethernet impairment |
JP4914334B2 (ja) * | 2007-12-12 | 2012-04-11 | 株式会社リコー | 無線通信システム |
US11916928B2 (en) | 2008-01-24 | 2024-02-27 | Icontrol Networks, Inc. | Communication protocols over internet protocol (IP) networks |
CN101910136B (zh) * | 2008-01-25 | 2012-08-15 | 株式会社日本化学工业所 | 具有乙炔基的荧光剂 |
US8014346B2 (en) * | 2008-03-05 | 2011-09-06 | Motorola Solutions, Inc. | Method for enabling periodic scanning in wireless communication networks |
WO2009130558A1 (en) * | 2008-04-23 | 2009-10-29 | Nokia Corporation | Other radio technology/geran interworking for neighbor cell measurement reporting |
JP5343276B2 (ja) * | 2008-06-16 | 2013-11-13 | マーベル ワールド トレード リミテッド | 近距離無線通信 |
US20170185278A1 (en) | 2008-08-11 | 2017-06-29 | Icontrol Networks, Inc. | Automation system user interface |
US7920495B2 (en) * | 2008-06-25 | 2011-04-05 | Nokia Corporation | Channel management via link parameter adjustment |
US8600324B1 (en) | 2008-06-27 | 2013-12-03 | Marvell International Ltd | Circuit and method for adjusting a digitally controlled oscillator |
US8472968B1 (en) | 2008-08-11 | 2013-06-25 | Marvell International Ltd. | Location-based detection of interference in cellular communications systems |
US11758026B2 (en) | 2008-08-11 | 2023-09-12 | Icontrol Networks, Inc. | Virtual device systems and methods |
US11729255B2 (en) | 2008-08-11 | 2023-08-15 | Icontrol Networks, Inc. | Integrated cloud system with lightweight gateway for premises automation |
US11792036B2 (en) | 2008-08-11 | 2023-10-17 | Icontrol Networks, Inc. | Mobile premises automation platform |
US8149893B2 (en) * | 2008-08-22 | 2012-04-03 | Siemens Aktiengesellschaft | Reliable wireless communication system using adaptive frequency hopping |
KR100985387B1 (ko) * | 2008-09-01 | 2010-10-05 | 동국대학교 경주캠퍼스 산학협력단 | 통신환경 내에서 클리어 채널(Clear Channel)을 탐색하는 방법 및 그 시스템. |
WO2010061096A1 (fr) | 2008-11-25 | 2010-06-03 | France Telecom | Technique de selection d'une frequence de communication |
US8855087B2 (en) * | 2008-12-18 | 2014-10-07 | Microsoft Corporation | Wireless access point supporting control by multiple applications |
US9288764B1 (en) | 2008-12-31 | 2016-03-15 | Marvell International Ltd. | Discovery-phase power conservation |
JP5110001B2 (ja) * | 2009-02-05 | 2012-12-26 | カシオ計算機株式会社 | 無線通信システム及び無線通信方法 |
TW201034498A (en) * | 2009-03-03 | 2010-09-16 | Ralink Technology Corp | Method of handling radar signals for a wireless communication device |
US8472427B1 (en) | 2009-04-06 | 2013-06-25 | Marvell International Ltd. | Packet exchange arbitration for coexisting radios |
KR101015305B1 (ko) * | 2009-04-16 | 2011-02-15 | 제주대학교 산학협력단 | 신호 전송 장치 및 신호 전송 장치의 제어 신호 전송 방법 |
US8532041B1 (en) | 2009-04-24 | 2013-09-10 | Marvell International Ltd. | Method for transmitting information in a regulated spectrum and network configured to operate in the regulated spectrum |
US8638211B2 (en) | 2009-04-30 | 2014-01-28 | Icontrol Networks, Inc. | Configurable controller and interface for home SMA, phone and multimedia |
JP4856736B2 (ja) * | 2009-05-18 | 2012-01-18 | 株式会社バッファロー | 無線通信装置、無線通信システムおよび無線通信方法 |
JP4803281B2 (ja) | 2009-06-03 | 2011-10-26 | カシオ計算機株式会社 | 無線通信装置及びプログラム |
US8712330B2 (en) * | 2009-06-12 | 2014-04-29 | Broadcom Corporation | Method and system for Bluetooth low power link layer connection setup |
JP4831210B2 (ja) * | 2009-06-17 | 2011-12-07 | カシオ計算機株式会社 | 無線通信装置、無線通信方法及びプログラム |
JP4766158B2 (ja) | 2009-06-30 | 2011-09-07 | カシオ計算機株式会社 | 無線通信装置及び無線通信方法 |
US9066369B1 (en) | 2009-09-16 | 2015-06-23 | Marvell International Ltd. | Coexisting radio communication |
EP2299768A1 (en) * | 2009-09-18 | 2011-03-23 | Electronics and Telecommunications Research Institute | Data transmission apparatus and method in wireless communication system |
JP2011077634A (ja) * | 2009-09-29 | 2011-04-14 | Mitsubishi Electric Corp | 無線通信端末及び無線通信方法 |
JP5635252B2 (ja) | 2009-10-22 | 2014-12-03 | オリンパス株式会社 | 画像送信装置、画像通信システム、画像送信方法、およびプログラム |
JP5129800B2 (ja) * | 2009-12-09 | 2013-01-30 | 株式会社神戸製鋼所 | 無線lanシステム |
US9307431B2 (en) | 2010-04-13 | 2016-04-05 | Qualcomm Incorporated | Reporting of channel properties in heterogeneous networks |
US9350475B2 (en) | 2010-07-26 | 2016-05-24 | Qualcomm Incorporated | Physical layer signaling to user equipment in a wireless communication system |
US9515773B2 (en) | 2010-04-13 | 2016-12-06 | Qualcomm Incorporated | Channel state information reporting in a wireless communication network |
US20110250919A1 (en) | 2010-04-13 | 2011-10-13 | Qualcomm Incorporated | Cqi estimation in a wireless communication network |
US8767771B1 (en) | 2010-05-11 | 2014-07-01 | Marvell International Ltd. | Wakeup beacons for mesh networks |
WO2011142162A1 (ja) * | 2010-05-12 | 2011-11-17 | コニカミノルタエムジー株式会社 | 放射線画像撮影システム |
WO2011160100A1 (en) | 2010-06-18 | 2011-12-22 | Qualcomm Incorporated | Channel quality reporting for different types of subframes |
US9136953B2 (en) | 2010-08-03 | 2015-09-15 | Qualcomm Incorporated | Interference estimation for wireless communication |
EP2618611B1 (en) * | 2010-09-15 | 2019-03-13 | Sony Interactive Entertainment Inc. | Wireless communication device, wireless communication system and channel switching method |
US8836467B1 (en) | 2010-09-28 | 2014-09-16 | Icontrol Networks, Inc. | Method, system and apparatus for automated reporting of account and sensor zone information to a central station |
WO2012054210A1 (en) | 2010-10-20 | 2012-04-26 | Marvell World Trade Ltd. | Pre-association discovery |
US20120099575A1 (en) * | 2010-10-26 | 2012-04-26 | Electronics And Telecommunications Research Institute | Apparatus and method for complex communication |
US8588844B2 (en) | 2010-11-04 | 2013-11-19 | Extricom Ltd. | MIMO search over multiple access points |
US11750414B2 (en) | 2010-12-16 | 2023-09-05 | Icontrol Networks, Inc. | Bidirectional security sensor communication for a premises security system |
US8855000B2 (en) | 2011-04-28 | 2014-10-07 | Qualcomm Incorporated | Interference estimation using data traffic power and reference signal power |
US8750278B1 (en) | 2011-05-26 | 2014-06-10 | Marvell International Ltd. | Method and apparatus for off-channel device invitation |
US8983557B1 (en) | 2011-06-30 | 2015-03-17 | Marvell International Ltd. | Reducing power consumption of a multi-antenna transceiver |
ES2589035T3 (es) * | 2011-08-11 | 2016-11-08 | Lg Electronics Inc. | Método y aparato para la selección dinámica de frecuencias en un sistema de red de área local inalámbrica |
JP5403022B2 (ja) * | 2011-09-09 | 2014-01-29 | カシオ計算機株式会社 | 無線通信装置、無線通信方法及びプログラム |
US9125216B1 (en) | 2011-09-28 | 2015-09-01 | Marvell International Ltd. | Method and apparatus for avoiding interference among multiple radios |
US9014087B2 (en) * | 2011-12-23 | 2015-04-21 | Symbol Technologies, Inc. | Method and system for access point assisted active roam scanning |
WO2013119810A1 (en) | 2012-02-07 | 2013-08-15 | Marvell World Trade Ltd. | Method and apparatus for multi-network communication |
US9450649B2 (en) | 2012-07-02 | 2016-09-20 | Marvell World Trade Ltd. | Shaping near-field transmission signals |
US9167511B2 (en) * | 2012-07-31 | 2015-10-20 | Hewlett-Packard Development Company, L.P. | Utilizing client mobile devices for wireless network monitoring |
JP5406351B2 (ja) * | 2012-09-06 | 2014-02-05 | 日本電気通信システム株式会社 | 無線装置、無線通信システム、制御方法及び制御プログラム |
CA2887576C (en) | 2012-10-09 | 2018-11-13 | Adaptive Spectrum And Signal Alignment, Inc. | Method and system for connectivity diagnostics in communication systems |
KR20150066561A (ko) * | 2012-10-09 | 2015-06-16 | 어댑티브 스펙트럼 앤드 시그널 얼라인먼트, 인크. | 통신 시스템에서 대기 시간 측정을 위한 방법 및 시스템 |
US9480069B2 (en) * | 2013-02-14 | 2016-10-25 | Qualcomm Incorporated | Receiver measurement assisted access point control |
US9252998B2 (en) | 2013-02-25 | 2016-02-02 | Itron, Inc. | Radio to detect and compensate for frequency misalignment |
US9426680B2 (en) | 2013-02-25 | 2016-08-23 | Itron, Inc. | Real-time radio spectrum assessment engine |
US9077487B2 (en) | 2013-02-25 | 2015-07-07 | Itron, Inc. | Radio to support channel plans of arbitrary width and/or spacing |
CN105284155B (zh) * | 2013-03-10 | 2019-02-22 | Lg电子株式会社 | 在聚合多个通信系统的网络中执行信道切换的方法及用于该方法的设备 |
JP2013141325A (ja) * | 2013-04-19 | 2013-07-18 | Casio Comput Co Ltd | 無線通信装置及びプログラム |
JP6193009B2 (ja) * | 2013-06-21 | 2017-09-06 | 株式会社東芝 | 無線通信装置及び無線通信システム |
US9479268B2 (en) * | 2013-07-31 | 2016-10-25 | Cellco Partnership | Filtering interference in wireless networks |
US10264510B2 (en) * | 2013-11-06 | 2019-04-16 | Kt Corporation | Method and device for transmitting and receiving data in wireless LAN system |
US9839040B2 (en) * | 2013-11-26 | 2017-12-05 | Echostar Technologies L.L.C. | Mitigating wireless interference |
US9955505B2 (en) * | 2013-12-06 | 2018-04-24 | Apple Inc. | Peer-to-peer communications on restricted channels |
US11405463B2 (en) | 2014-03-03 | 2022-08-02 | Icontrol Networks, Inc. | Media content management |
US10524148B2 (en) * | 2014-04-17 | 2019-12-31 | Qualcomm Incorporated | Utilizing in-device coexistence message for interference management in unlicensed bands |
US9433008B2 (en) | 2014-05-12 | 2016-08-30 | Qualcomm Incorporated | Methods and apparatus for channel selection in a wireless local area network |
US10178167B2 (en) | 2014-05-30 | 2019-01-08 | Apple Inc. | Real-time peer-to-peer communications in an environment that includes a restricted channel |
US9743363B2 (en) * | 2014-06-24 | 2017-08-22 | Qualcomm Incorporated | CCA clearance in unlicensed spectrum |
US10251198B2 (en) | 2014-06-26 | 2019-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Clear channel assessment threshold configuration |
US10075864B2 (en) * | 2014-07-02 | 2018-09-11 | Intel IP Corporation | System and method for measurement reporting in an unlicensed spectrum |
KR102222003B1 (ko) * | 2014-07-31 | 2021-03-04 | 주식회사 케이티 | 무선랜의 동작 모드 변경을 이용한 고품질 통화 방법 및 장치 |
US10425187B2 (en) | 2014-10-03 | 2019-09-24 | Qualcomm Incorporated | UE assisted interference learning |
US9433009B1 (en) * | 2014-10-28 | 2016-08-30 | Sprint Spectrum L.P. | Channel selection based on correlation between air interface quality and level of port-to-port isolation |
JP6433260B2 (ja) * | 2014-11-19 | 2018-12-05 | パナソニック株式会社 | ワイヤレス通信システムにおける空間共有の方法 |
US9930652B2 (en) * | 2014-12-18 | 2018-03-27 | Intel Corporation | Evolved node-B, user equipment and methods for transition between unlicensed and licensed frequency bands |
TW201625030A (zh) | 2014-12-18 | 2016-07-01 | 湯姆生特許公司 | Wi-Fi無線節點之無線鏈測試方法,及執行該方法之電路 |
EP3046387A1 (en) * | 2015-01-19 | 2016-07-20 | Alcatel Lucent | Access point device, apparatus for managing an access point device, wireless communication device, and corresponding method and computer program product |
US10349293B2 (en) | 2015-04-17 | 2019-07-09 | Qualcomm Incorporated | Control of UE clear channel assessment by an eNB |
EP3322214A4 (en) * | 2015-07-10 | 2018-11-14 | Sony Corporation | Communication control device, information processing device, information processing method, and program |
JP6371008B2 (ja) * | 2015-08-11 | 2018-08-08 | 京セラ株式会社 | 通信方法、セルラ基地局及び無線lan終端ノード |
US20170078887A1 (en) * | 2015-09-15 | 2017-03-16 | Qualcomm Incorporated | Systems and methods for reuse of wireless communication resources in neighboring communication networks |
US9973969B2 (en) | 2015-09-25 | 2018-05-15 | Qualcomm Incorporated | Dynamic frequency selection channel scan optimizations |
US9992124B2 (en) | 2015-10-09 | 2018-06-05 | Itron, Inc. | Multi-channel decoder architecture |
GB2545697B (en) * | 2015-12-22 | 2020-01-08 | Airties Kablosuz Iletism Sanayi Ve Disticaret As | Dynamic channel selection and DFS re-entry |
EP3253123B1 (en) * | 2016-05-31 | 2020-02-12 | Alcatel Lucent | Channel selection for a wireless access point |
JP2016187215A (ja) * | 2016-06-29 | 2016-10-27 | ヤマハ株式会社 | 無線中継装置、およびプログラム |
EP3603245A1 (en) * | 2017-03-21 | 2020-02-05 | Koninklijke Philips N.V. | Access point with life-critical network aware ieee 802.11 channel selection |
CN110870368A (zh) * | 2017-06-13 | 2020-03-06 | 舒尔获得控股公司 | 并行使用及扫描无线信道 |
WO2019041150A1 (zh) * | 2017-08-30 | 2019-03-07 | 深圳市大疆创新科技有限公司 | 一种信道切换方法、装置及通信设备 |
KR101979278B1 (ko) | 2017-09-28 | 2019-05-16 | 엘지전자 주식회사 | 공기조화기 시스템의 제어 방법 |
KR101922954B1 (ko) | 2017-09-28 | 2018-11-28 | 엘지전자 주식회사 | 공기조화기 시스템의 제어 방법 |
US20190319864A1 (en) * | 2018-04-17 | 2019-10-17 | Telia Company Ab | Network monitoring |
US10667274B2 (en) * | 2018-06-29 | 2020-05-26 | Wipro Limited | Method and system for dynamic channel allocation in long-range land-to-sea (LRLS) wireless communication |
US11290955B2 (en) | 2018-09-28 | 2022-03-29 | Apple Inc. | Low latency wireless protocol |
JP2019050584A (ja) * | 2018-10-24 | 2019-03-28 | ヤマハ株式会社 | 無線中継装置、無線中継方法およびプログラム |
US11451966B2 (en) * | 2019-03-04 | 2022-09-20 | Apple Inc. | Wireless access protocol with collaborative spectrum monitoring |
US11405793B2 (en) | 2019-09-30 | 2022-08-02 | Shure Acquisition Holdings, Inc. | Concurrent usage and scanning of wireless channels for direct DFS to DFS channel switching |
CN114390639B (zh) * | 2020-10-22 | 2023-09-12 | 华为技术有限公司 | 一种选取信道的方法及其相关设备 |
US11363513B1 (en) | 2020-12-16 | 2022-06-14 | Sprint Spectrum L.P. | Proactive control of UE service based on quality of an access node's RF-circuitry as to frequency bands on which the access node operates in coverage zones through which the UE is predicted to move |
US11497020B1 (en) * | 2021-05-27 | 2022-11-08 | Apple Inc. | Selection of a shared channel based on a channel occupancy measurement |
US20230029957A1 (en) * | 2021-07-20 | 2023-02-02 | Sony Group Corporation | Channel access on non-simultaneous transmit/receive link |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5418839A (en) * | 1990-04-13 | 1995-05-23 | Phonemate, Inc. | Environmental adaptive mechanism for channel utilization in cordless telephones |
US5335356A (en) * | 1991-09-05 | 1994-08-02 | Telefonaktiebolaget L M Ericsson | Adaptive resource allocation in a mobile telephone system |
US5280630A (en) * | 1992-01-21 | 1994-01-18 | Motorola, Inc. | Method and apparatus for dynamic channel allocation |
US5603081A (en) * | 1993-11-01 | 1997-02-11 | Telefonaktiebolaget Lm Ericsson | Method for communicating in a wireless communication system |
US5673307A (en) * | 1994-02-17 | 1997-09-30 | Spectralink Corporation | Handoff method for indoor cellular phone system |
US5862451A (en) * | 1996-01-22 | 1999-01-19 | Motorola, Inc. | Channel quality management in a cable telephony system |
US6044272A (en) * | 1997-02-25 | 2000-03-28 | Sbc Technology Resources, Inc. | Mobile assisted handoff system and method |
US6023622A (en) | 1997-03-05 | 2000-02-08 | Watkins-Johnson Company | Wireless communication system with dynamic channel allocation |
US6112098A (en) * | 1997-11-26 | 2000-08-29 | International Business Machines Corporation | Cordless or wireless system protocol for providing reliable channel connections |
US6169761B1 (en) * | 1998-04-01 | 2001-01-02 | Wavespan Corporation | Method and transceiver using an improved protocol for a frequency hop communication system |
US6252865B1 (en) * | 1998-10-02 | 2001-06-26 | Qualcomm, Inc. | Methods and apparatuses for fast power control of signals transmitted on a multiple access channel |
US6597680B1 (en) * | 1998-11-16 | 2003-07-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Packet traffic channel reassignment |
SE521227C2 (sv) * | 1999-02-22 | 2003-10-14 | Ericsson Telefon Ab L M | Mobilradiosystem och ett förfarande för kanallokering i ett mobilradiosystem |
US6516189B1 (en) * | 1999-03-17 | 2003-02-04 | Telephia, Inc. | System and method for gathering data from wireless communications networks |
FI107690B (fi) * | 1999-04-30 | 2001-09-14 | Nokia Mobile Phones Ltd | Parannettu menetelmä ja järjestely solun valinnan hallitsemiseksi ja solukkojärjestelmän päätelaite |
US6456848B1 (en) * | 1999-12-15 | 2002-09-24 | Verizon Laboratories Inc. | Assigning cellular channels to locked and unlocked cells |
EP1111947A1 (en) * | 1999-12-22 | 2001-06-27 | Telefonaktiebolaget L M Ericsson (Publ) | Cordless telephone system |
US6985465B2 (en) * | 2000-07-07 | 2006-01-10 | Koninklijke Philips Electronics N.V. | Dynamic channel selection scheme for IEEE 802.11 WLANs |
-
2001
- 2001-10-12 US US09/976,339 patent/US7206840B2/en not_active Expired - Lifetime
-
2002
- 2002-05-06 KR KR10-2003-7000450A patent/KR20030017618A/ko not_active Application Discontinuation
- 2002-05-06 WO PCT/IB2002/001574 patent/WO2002093839A2/en not_active Application Discontinuation
- 2002-05-06 JP JP2002590590A patent/JP2004520766A/ja not_active Withdrawn
- 2002-05-06 EP EP02769531A patent/EP1393502A2/en not_active Withdrawn
- 2002-05-06 CN CN02801617A patent/CN1462523A/zh active Pending
Cited By (80)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1965534B (zh) * | 2004-04-30 | 2013-02-06 | 英特尔公司 | 用于无线网络中的信道扫描的方法和设备 |
CN101015172B (zh) * | 2004-07-14 | 2011-03-09 | 英特尔公司 | 用于扩展服务集网状网的分布式自配置的系统和方法 |
CN105142233B (zh) * | 2004-08-12 | 2018-12-07 | 美商内数位科技公司 | 在ieee 802.11 ap中使用的方法及ieee 802.11 ap |
CN105142233A (zh) * | 2004-08-12 | 2015-12-09 | 美商内数位科技公司 | 在ieee 802.11 ap中使用的方法及ieee 802.11 ap |
US10447386B2 (en) | 2004-08-12 | 2019-10-15 | Interdigital Technology Corporation | Method and system for controlling access to a wireless communication medium |
CN100394731C (zh) * | 2004-09-30 | 2008-06-11 | 三星电子株式会社 | 检测无线局域网(wlan)系统中相邻基本服务集(bss)之间的干扰 |
CN1773970B (zh) * | 2004-11-11 | 2010-04-28 | 联想(北京)有限公司 | 一种短距离无线网络信道的确定方法 |
CN101099317B (zh) * | 2004-11-16 | 2015-06-10 | 高通股份有限公司 | Tdd通信系统的开环速率控制 |
CN1787472B (zh) * | 2004-12-07 | 2012-05-16 | Lg电子株式会社 | 无线音频/视频设备的信道选择方法 |
CN1815915B (zh) * | 2005-01-31 | 2010-09-08 | 三星电子株式会社 | 多入多出通信设备及其信道扫描方法 |
CN1943175B (zh) * | 2005-02-04 | 2011-07-27 | 株式会社东芝 | 多类多信道无线lan等的最佳信道分配 |
CN101142841B (zh) * | 2005-03-15 | 2012-05-16 | 诺基亚公司 | 用于在无线系统中选择信号的方法和布置 |
CN101496321B (zh) * | 2005-09-13 | 2012-08-15 | 思科技术公司 | 用于检测主要频谱用户的系统和方法 |
WO2007059655A1 (fr) * | 2005-11-28 | 2007-05-31 | Zte Corporation | Methode et dispositif pour surveiller un canal de reception de radiofrequence dans un systeme de communication sans fil |
CN101039462B (zh) * | 2006-03-17 | 2012-06-20 | 三星电子株式会社 | 在相同信道的基本服务集之间选择动态频率的方法和设备 |
TWI427953B (zh) * | 2006-04-25 | 2014-02-21 | Microsoft Corp | 基於感知無線電之ofdma |
CN101433046B (zh) * | 2006-04-25 | 2012-01-18 | 微软公司 | 基于认知无线电的ofdma通信的方法和系统 |
US9386055B2 (en) | 2006-05-12 | 2016-07-05 | Microsoft Technology Licensing, Llc | Signaling to application lack of requested bandwidth |
US10182367B2 (en) | 2006-05-12 | 2019-01-15 | Microsoft Technology Licensing Llc | Signaling to application lack of requested bandwidth |
CN100454874C (zh) * | 2006-07-19 | 2009-01-21 | 华为技术有限公司 | 一种防止无线局域网自干扰的系统及方法 |
US9356758B2 (en) | 2006-10-26 | 2016-05-31 | Lg Electronics Inc. | Method of channel assessment and channel searching in a wireless network |
US9001773B2 (en) | 2006-10-26 | 2015-04-07 | Lg Electronics Inc. | Method of channel assessment and channel searching in a wireless network |
US8570984B2 (en) | 2006-10-26 | 2013-10-29 | Lg Electronics Inc. | Method of channel assessment and channel searching in a wireless network |
US7792076B2 (en) | 2006-12-01 | 2010-09-07 | Cameo Communications Inc. | Method and device for automatically allocating channels of wireless network system |
US9774415B2 (en) | 2006-12-12 | 2017-09-26 | Microsoft Technology Licensing, Llc | Cognitive multi-user OFDMA |
US9641273B2 (en) | 2006-12-12 | 2017-05-02 | Microsoft Technology Licensing, Llc | Cognitive multi-user OFDMA |
US10581655B2 (en) | 2006-12-12 | 2020-03-03 | Microsoft Technology Licensing, Llc | Cognitive multi-user OFDMA |
US9866418B2 (en) | 2006-12-12 | 2018-01-09 | Microsoft Technology Licensing, Llc | Cognitive multi-user OFDMA |
CN101242649B (zh) * | 2007-01-05 | 2011-06-08 | 美国博通公司 | 通信架构中的无线网络、客户端设备、接入点及操作方法 |
US9755879B2 (en) | 2007-05-08 | 2017-09-05 | Microsoft Technology Licensing, Llc | OFDM transmission and reception for non-OFDM signals |
US9363120B2 (en) | 2007-05-08 | 2016-06-07 | Microsoft Technology Licensing, Llc | OFDM transmission and reception for non-OFDM signals |
US10177953B2 (en) | 2007-05-08 | 2019-01-08 | Microsoft Technology Licensing, Llc | OFDM transmission and reception for non-OFDM signals |
CN103220734A (zh) * | 2007-11-20 | 2013-07-24 | 安移通网络公司 | 通信网络中检测并避免干扰的方法及装置 |
CN101878638A (zh) * | 2007-11-20 | 2010-11-03 | 阿德利亚网络公司 | 通信网络中检测并避免干扰的方法及装置 |
US9860165B2 (en) | 2007-11-20 | 2018-01-02 | Aruba Networks, Inc. | Method and apparatus for detecting and avoiding interference in a communications network |
US8718561B2 (en) | 2007-11-20 | 2014-05-06 | Aruba Networks, Inc. | Method and apparatus for detecting and avoiding interference in a communications network |
US9363795B2 (en) | 2008-01-25 | 2016-06-07 | Microsoft Technology Licensing, Llc | Orthogonal Frequency Division Multiple Access with carrier sense |
US9742529B2 (en) | 2008-01-25 | 2017-08-22 | Microsoft Technology Licensing, Llc | Orthogonal frequency division multiple access with carrier sense |
WO2012055274A1 (zh) * | 2010-10-29 | 2012-05-03 | 中兴通讯股份有限公司 | 信道调整方法及装置 |
CN102457971A (zh) * | 2010-10-29 | 2012-05-16 | 中兴通讯股份有限公司 | 信道调整方法及装置 |
CN109495154A (zh) * | 2012-03-08 | 2019-03-19 | 雅马哈株式会社 | 无线中继装置、无线中继方法 |
CN109495154B (zh) * | 2012-03-08 | 2021-08-24 | 雅马哈株式会社 | 无线中继装置、无线中继方法 |
CN102711113A (zh) * | 2012-05-10 | 2012-10-03 | 北京邮电大学 | 一种基于802.11ac中国高效信道兼容性的解决方法 |
US9173219B2 (en) | 2012-06-18 | 2015-10-27 | Huawei Device Co., Ltd. | Method, apparatus and system for improving data transmission performance |
CN102740376B (zh) * | 2012-06-18 | 2015-01-07 | 华为终端有限公司 | 提升数据传输性能的方法、装置和系统 |
WO2013189276A1 (zh) * | 2012-06-18 | 2013-12-27 | 华为终端有限公司 | 提升数据传输性能的方法、装置和系统 |
CN102740376A (zh) * | 2012-06-18 | 2012-10-17 | 华为终端有限公司 | 提升数据传输性能的方法、装置和系统 |
CN102857904A (zh) * | 2012-06-21 | 2013-01-02 | 中兴通讯股份有限公司 | 热点开启方法及装置 |
CN105874867A (zh) * | 2014-01-07 | 2016-08-17 | 三菱电机株式会社 | 基站、终端站和无线通信系统 |
CN106105082B (zh) * | 2014-03-12 | 2019-05-21 | 高通股份有限公司 | 用于在无执照射频谱带中传送定位参考信号的技术 |
CN106105082A (zh) * | 2014-03-12 | 2016-11-09 | 高通股份有限公司 | 用于在无执照射频谱带中传送定位参考信号的技术 |
US10367618B2 (en) | 2014-03-12 | 2019-07-30 | Qualcomm Incorporated | Techniques for transmitting positioning reference signals in an unlicensed radio frequency spectrum band |
US10412763B2 (en) | 2014-06-27 | 2019-09-10 | Techflux, Ltd. | Method and device for uplink transmission in wireless local area network using OFDMA scheme |
US9730247B2 (en) | 2014-06-27 | 2017-08-08 | Techflux, Ltd. | Method and device for uplink transmission |
WO2016023492A1 (en) * | 2014-08-12 | 2016-02-18 | Mediatek Inc. | Method to improve channel access opportunity in a wireless communications system |
CN105376862A (zh) * | 2014-08-28 | 2016-03-02 | 上海贝尔股份有限公司 | 基于可调整竞争窗在免许可信道上传输数据的方法和装置 |
CN105376862B (zh) * | 2014-08-28 | 2019-04-19 | 上海诺基亚贝尔股份有限公司 | 基于可调整竞争窗在免许可信道上传输数据的方法和装置 |
TWI618434B (zh) * | 2014-09-12 | 2018-03-11 | 英特爾公司 | 用於802.11高效能無線區域網路(hew)規格及系統之帶有干擾控制技術的動態空閒頻道評估(cca)方案 |
WO2016037364A1 (en) * | 2014-09-12 | 2016-03-17 | Intel Corporation | Dynamic cca scheme with interface control for 802.11 hew standard and system |
CN107211434A (zh) * | 2015-01-23 | 2017-09-26 | 阿尔卡特朗讯 | 用于管理无线接入点的操作的方法、系统和计算机程序产品 |
CN107211284B (zh) * | 2015-02-16 | 2021-10-01 | 微软技术许可有限责任公司 | 用户端侧动态频率选择检查 |
CN107211284A (zh) * | 2015-02-16 | 2017-09-26 | 微软技术许可有限责任公司 | 用户端侧动态频率选择检查 |
CN104754678A (zh) * | 2015-04-10 | 2015-07-01 | 中国电力科学研究院 | 一种无线网络中ap选择最佳信道的方法 |
CN104754678B (zh) * | 2015-04-10 | 2020-12-04 | 中国电力科学研究院 | 一种无线网络中ap选择最佳信道的方法 |
CN106550377A (zh) * | 2015-09-18 | 2017-03-29 | 华为技术有限公司 | 通信方法、接入点和站点 |
CN106550377B (zh) * | 2015-09-18 | 2020-02-14 | 华为技术有限公司 | 通信方法、接入点和站点 |
CN105657755B (zh) * | 2016-01-06 | 2018-03-02 | 广东欧珀移动通信有限公司 | 一种信道的控制方法及装置 |
CN108419278A (zh) * | 2016-01-06 | 2018-08-17 | 广东欧珀移动通信有限公司 | 一种信道的控制方法及装置 |
CN105657755A (zh) * | 2016-01-06 | 2016-06-08 | 广东欧珀移动通信有限公司 | 一种信道的控制方法及装置 |
CN108419278B (zh) * | 2016-01-06 | 2020-12-29 | Oppo广东移动通信有限公司 | 一种信道的控制方法及装置 |
CN107155086B (zh) * | 2016-03-03 | 2020-05-05 | 佳能株式会社 | X射线摄像系统、摄像装置及信息处理方法 |
CN107155086A (zh) * | 2016-03-03 | 2017-09-12 | 佳能株式会社 | X射线摄像系统、摄像装置及信息处理方法 |
US10631805B2 (en) | 2016-03-03 | 2020-04-28 | Canon Kabushiki Kaisha | X-ray imaging system, information processing method, and computer readable medium |
CN107580318B (zh) * | 2016-07-04 | 2021-08-10 | 智易科技股份有限公司 | 选择执行特定功能的通信接口的方法与系统 |
CN107580318A (zh) * | 2016-07-04 | 2018-01-12 | 智易科技股份有限公司 | 选择执行特定功能的通信接口的方法与系统 |
CN108605033B (zh) * | 2016-12-01 | 2020-07-28 | 华为技术有限公司 | 一种信道选择方法及设备 |
CN108605033A (zh) * | 2016-12-01 | 2018-09-28 | 华为技术有限公司 | 一种信道选择方法及设备 |
CN108616961A (zh) * | 2016-12-16 | 2018-10-02 | 华为技术有限公司 | 一种Wi-Fi接入的方法以及设备 |
US11109408B2 (en) | 2019-08-16 | 2021-08-31 | Techflux, Inc. | Method and device for uplink transmission |
CN112911685A (zh) * | 2021-01-29 | 2021-06-04 | 成都极米科技股份有限公司 | 无线局域网扫描和同步的方法、终端及存储介质 |
Also Published As
Publication number | Publication date |
---|---|
JP2004520766A (ja) | 2004-07-08 |
US7206840B2 (en) | 2007-04-17 |
KR20030017618A (ko) | 2003-03-03 |
WO2002093839A2 (en) | 2002-11-21 |
WO2002093839A3 (en) | 2003-02-13 |
US20020188723A1 (en) | 2002-12-12 |
EP1393502A2 (en) | 2004-03-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1462523A (zh) | Ieee802.11无线局域网的动态频率选择方案 | |
US6985465B2 (en) | Dynamic channel selection scheme for IEEE 802.11 WLANs | |
JP6077506B2 (ja) | ワイヤレスローカルエリアネットワークにおける近傍スキャン | |
TWI551167B (zh) | 用於信標報告傳輸之無線發射接收單元及其使用方法 | |
US20080095125A1 (en) | Enhanced Site Report by Low Latency Roaming by Passive Scanning in Ieee 802.11 Networks | |
US20080304444A1 (en) | Enhanced Site Report for Low Latency Roaming By Passive Scanning in Ieee 802.11 Networks | |
KR200397752Y1 (ko) | Wlan에서의 이웃 스캐닝 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |