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    • 3. 发明授权
    • Method and system for dynamically assigning channels across multiple radios in a wireless LAN
    • 用于在无线LAN中跨多个无线电设备动态分配信道的方法和系统
    • US07327697B1
    • 2008-02-05
    • US10183704
    • 2002-06-25
    • Robert J. FridayPatrice R. CalhounRobert B. O'Hara, Jr.Alexander H. HillsPaul F. Dietrich
    • Robert J. FridayPatrice R. CalhounRobert B. O'Hara, Jr.Alexander H. HillsPaul F. Dietrich
    • H04B7/005
    • H04W72/085H04B17/24H04B17/309H04B17/318H04B17/382H04W72/0486H04W72/082H04W84/12
    • In a fixed channel wireless network system with a limited number of channels, assignment of the fixed channels between remote client elements and access elements is made systematically according to a set of criteria accounting for network loading and interference, then channel assignments are dynamically updated according to a priority to maintain optimal network performance with changing conditions of load and interference. The channel utilization problem is address at a system level rather than at a local level by treating the system as a three dimensional color mapping problem. All noise is treated as having a source in virtual access elements with an appropriate performance metric. The performance metric is used to select a channel set that minimize chances of interference and maximize user performance. Specifically, there are several parameter matrices which are managed and updated by a central resource management element, namely signal strength between elements, interference, and load. These matrices are used to find the optimal channel assignments for a predetermined limited set of assignable channels.
    • 在具有有限数量的信道的固定信道无线网络系统中,根据负责网络加载和干扰的一组标准系统地对远程客户端元素和接入单元之间的固定信道进行分配,然后,信道分配根据 优先考虑负载和干扰条件下的最佳网络性能。 信道利用问题是通过将系统视为三维颜色映射问题而在系统级而不是在本地级的地址。 所有噪声被视为具有适当性能指标的虚拟访问元素中的源。 性能指标用于选择最小化干扰机会并最大化用户性能的通道集。 具体来说,存在由中央资源管理元件管理和更新的几个参数矩阵,即元件之间的信号强度,干扰和负载。 这些矩阵用于找到预定有限的一组可分配信道的最佳信道分配。
    • 8. 发明授权
    • Method and system for dynamically assigning channels across multiple access elements in a wireless LAN
    • 用于在无线LAN中跨多个无线电设备动态分配信道的方法和系统
    • US07593356B1
    • 2009-09-22
    • US10913561
    • 2004-08-06
    • Robert J. FridayPatrice R. CalhounRobert B. O'Hara, Jr.Alexander H. HillsPaul F. Dietrich
    • Robert J. FridayPatrice R. CalhounRobert B. O'Hara, Jr.Alexander H. HillsPaul F. Dietrich
    • H04B7/005
    • H04W72/082H04B17/24H04B17/309H04B17/318H04B17/382H04W72/0486H04W72/08H04W72/085H04W84/12
    • In a fixed channel wireless network system with a limited number of channels, assignment of the fixed channels between remote client elements and access elements is made systematically according to a set of criteria according for network loading and interference, then channel assignments are dynamically updated according to a priority to maintain optimal network performance with changing conditions of load and interference. The channel utilization problem is addressed at a system level rather than at a local level by treating the system as a three dimensional color mapping problem. All noise is treated as having a source in virtual access elements with an appropriate performance metric. The performance metric is used to select a channel set that minimize chances of interference and maximize user performance. Specifically, there are several parameter matrices which are managed and updated by a central resource management element, namely signal strength between elements, interference, and load. These matrices are used to find the optimal channel assignments for a predetermined limited set of assignable channels. In one implementation, the channel assignment methodology takes into account the interference associated with access elements operating on a selected channel, as well as the interference or energy that spills over (or is otherwise observable) on physical channels adjacent to the selected channel.
    • 在具有有限数量的信道的固定信道无线网络系统中,根据根据网络负载和干扰的一组标准系统地对远程客户端元件和接入元件之间的固定信道进行分配,然后根据 优先考虑负载和干扰条件下的最佳网络性能。 通过将系统视为三维颜色映射问题,在系统级而不是在本地级别处理信道利用问题。 所有噪声被视为具有适当性能指标的虚拟访问元素中的源。 性能指标用于选择最小化干扰机会并最大限度提高用户性能的信道集。 具体来说,存在由中央资源管理元件管理和更新的几个参数矩阵,即元件之间的信号强度,干扰和负载。 这些矩阵用于找到预定有限的一组可分配信道的最佳信道分配。 在一个实现中,信道分配方法考虑了与在所选信道上操作的接入单元相关联的干扰,以及在与所选择的信道相邻的物理信道上溢出(或以其它方式观察到)的干扰或能量。
    • 9. 发明授权
    • Method and system for hierarchical processing of protocol information in a wireless LAN
    • 无线局域网中协议信息分层处理的方法和系统
    • US07212837B1
    • 2007-05-01
    • US10407584
    • 2003-04-04
    • Patrice R. CalhounRobert B. O'Hara, Jr.Robert J. Friday
    • Patrice R. CalhounRobert B. O'Hara, Jr.Robert J. Friday
    • H04B1/38H04H1/00H04Q7/20
    • H04W88/08H04W12/02H04W28/18H04W76/10H04W84/12H04W84/18
    • In a wireless Local Area Network (WLAN) system, a hierarchical architecture is provided which employs a protocol which divides protocol processing functions between a plurality of substantially identical access elements in which reside time-critical protocol functions, such as acknowledgment and retransmission of packets, and a centralized control element which provides control and management functions related to dynamic configuration of wireless networks, such as processing of network management messages (e.g., authentication and association), load control, channel control, and handoff, processing of physical layer information, and processing of channel characteristics, propagation, interference or noise, for the plurality of access elements in the WLAN without loss of information about the wireless characteristics of the access elements. This hierarchical protocol processing architecture allows the data flow to be centralized for better performance and provides useful access to all the protocol information from the WLAN.
    • 在无线局域网(WLAN)系统中,提供了一种层次结构,其采用在多个基本相同的接入单元之间划分协议处理功能的协议,其中存在时间关键协议功能,诸如分组的确认和重传, 以及提供与无线网络的动态配置相关的控制和管理功能的集中控制元件,例如网络管理消息(例如,认证和关联)的处理,负载控制,信道控制和切换,物理层信息的处理,以及 处理WLAN中的多个接入单元的信道特性,传播,干扰或噪声,而不会丢失关于接入单元的无线特性的信息。 这种分级协议处理架构允许数据流集中以获得更好的性能,并且提供对来自WLAN的所有协议信息的有用访问。