Mobile virtual LAN
    42.
    发明授权
    Mobile virtual LAN 有权
    移动虚拟局域网

    公开(公告)号:US07724715B2

    公开(公告)日:2010-05-25

    申请号:US11017429

    申请日:2004-12-20

    申请人: Robert C. Meier

    发明人: Robert C. Meier

    IPC分类号: H04W4/00

    摘要: A communication system in which multiple protocols and proxy services are executed by an access point. In one embodiment of the invention, GVRP and GMRP registrations are combined in a single packet when a wireless device roams to a different VLAN. In addition, outbound GVRP and GMRP multicast messages are handled by an access point (also referred to as a GVRP and GMRP “gateway”) such that the wireless device is not burdened with the associated computational overhead. In a further embodiment, a wireless device may dynamically switch between a VLAN-aware state and a VLAN-unaware state depending on the nature of a detected access point. For example, if a relevant access point supports GVRP, the wireless device may operate as a VLAN terminal. If a wireless device is not attached to an access point with a matching VLAN ID, the wireless device sends and receives VLAN tagged frames. If a wireless device configured with a VLAN ID is attached to an access point with a matching VLAN ID, or if the wireless device is attached to a non-VLAN access point, then the wireless device may send and receive raw/untagged frames. In addition to the gateways described below, the ability of a wireless device to detect when it can send untagged frames is considered novel. In another embodiment of the invention, a special ID that is different than the native VLAN ID for a switch port is used for VLAN-unaware devices. This allows such devices that do not issue tagged frames to belong to a single VLAN ID.

    摘要翻译: 由接入点执行多个协议和代理服务的通信系统。 在本发明的一个实施例中,当无线设备漫游到不同的VLAN时,将GVRP和GMRP注册组合在单个分组中。 此外,出站GVRP和GMRP组播消息由接入点(也称为GVRP和GMRP“网关”)处理,使得无线设备不负担相关的计算开销。 在进一步的实施例中,无线设备可以根据检测到的接入点的性质在VLAN感知状态和VLAN不知情状态之间动态切换。 例如,如果相关接入点支持GVRP,则无线设备可以作为VLAN终端运行。 如果无线设备未连接到具有匹配VLAN ID的接入点,则无线设备发送和接收VLAN标记的帧。 如果配置了VLAN ID的无线设备连接到具有匹配VLAN ID的接入点,或者无线设备连接到非VLAN接入点,则无线设备可以发送和接收原始/未标记帧。 除了下面描述的网关之外,无线设备检测何时可以发送未标记的帧的能力被认为是新颖的。 在本发明的另一个实施例中,与VLAN交换机端口的本地VLAN ID不同的特殊ID用于VLAN不知情的设备。 这允许不发出标记帧的这些设备属于单个VLAN ID。

    Transaction control system including portable data terminal and mobile customer service station
    47.
    发明授权
    Transaction control system including portable data terminal and mobile customer service station 有权
    交易控制系统包括便携式数据终端和移动客户服务站

    公开(公告)号:US07471651B2

    公开(公告)日:2008-12-30

    申请号:US10651188

    申请日:2003-08-28

    发明人: Phillip Miller

    IPC分类号: H04B7/00

    摘要: A mobile customer service station operating within a wireless multi-hop communication network includes a console on a wheeled chassis. The console carries and houses a number of components which are used in merchandising operations to conclude customer purchase transactions. The items supported externally on the console are a printer for printing purchase receipts, customer credit charge agreements and records of transactions, and a magnetic card reader for reading information from a magnetic stripe of a customer's credit card. In one embodiment, the operation of the printer, credit card reader and the cash drawer is controlled by a multi-function control unit located within an enclosure of the console. The control unit is electrically powered by a self-contained power source which is preferably a deep cycle rechargeable battery. The console also houses a transceiver unit which under the control of the control unit is capable of interactive communication with a premises network. In another embodiment, the mobile service station comprises an access device which participates with a variety of peripherals at the station in a lower power communication LAN, while providing higher power communication to other network devices via a premises network with routing via a wireless spanning tree configuration.

    摘要翻译: 在无线多跳通信网络内操作的移动客户服务站包括在轮式底盘上的控制台。 控制台携带并安装了用于商品销售操作的许多组件来完成客户购买交易。 在控制台外部支持的物品是用于打印采购单,客户信用费用协议和交易记录的打印机,以及用于从客户信用卡的磁条读取信息的磁卡阅读器。 在一个实施例中,打印机,信用卡读卡器和钱箱的操作由位于控制台的外壳内的多功能控制单元控制。 控制单元由优选为深循环可充电电池的独立电源供电。 控制台还容纳收发器单元,其在控制单元的控制下能够与房屋网络进行交互式通信。 在另一个实施例中,移动服务站包括访问设备,该接入设备在较低功率通信LAN中的站点处参与各种外设,同时经由房屋网络向其他网络设备提供更高功率的通信,并通过无线生成树配置进行路由 。

    Hierarchical communication system providing intelligent data, program and processing migration
    48.
    发明授权
    Hierarchical communication system providing intelligent data, program and processing migration 有权
    分层通信系统提供智能数据,程序和处理迁移

    公开(公告)号:US07440416B2

    公开(公告)日:2008-10-21

    申请号:US10736068

    申请日:2003-12-15

    IPC分类号: H04L12/26

    摘要: A hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. Copies of data, program code and processing resources are migrated from their source toward requesting destinations based on request frequency, communication link costs and available local storage and/or processing resources. Each appropriately configured network device acts as an active participant in network migration. In addition, portable two-dimensional (2-D) code reading terminals are configured to wirelessly communicate compressed 2-D images toward stationary access servers that identify the code image through decoding and through comparison with a database of images that have previously been decoded and stored.

    摘要翻译: 描述了以生成树配置布置的分级通信系统,其中在总体方案中采用表现出基本上不同特性的有线和无线通信网络来链接便携式或移动计算设备。 基于请求频率,通信链路成本和可用的本地存储和/或处理资源,数据,程序代码和处理资源的副本从其源向请求目的地迁移。 每个适当配置的网络设备充当网络迁移的主动参与者。 此外,便携式二维(2-D)码读取终端被配置为将压缩的二维图像无线地传送到固定式访问服务器,其通过解码识别代码图像,并且通过与先前已被解码的图像的数据库进行比较,以及 存储。

    Power-save method for 802.11 multicast paging applications
    49.
    发明授权
    Power-save method for 802.11 multicast paging applications 有权
    802.11多播寻呼应用的省电方法

    公开(公告)号:US07424007B2

    公开(公告)日:2008-09-09

    申请号:US10844303

    申请日:2004-05-12

    IPC分类号: H04L12/66 H04B1/38

    摘要: A power-save method for a network with an access point and an associated power-save client. The access point buffers wireless data that includes a unicast frame and a multicast frame. A periodic scheduled beacon message is transmitted with a unicast indication element and a multicast indication element. The unicast element instructs a client to remain awake to receive a buffered unicast frame, which includes a destination MAC address. The multicast element instructs a client to remain awake following the beacon to receive a buffered multicast frame, which includes a destination multicast address designating a multicast group of which the client is a member. At least one beacon message is designated as a multicast delivery beacon. The buffered multicast frame is transmitted following the designated multicast beacon. The multicast element contains a list of entries, each entry corresponding to either a multicast MAC address, multicast IP address, or client identifier.

    摘要翻译: 具有接入点和相关节电客户端的网络的省电方法。 接入点缓冲包括单播帧和多播帧的无线数据。 使用单播指示元素和多播指示元素发送周期性调度信标消息。 单播元件指示客户端保持唤醒以接收包括目的地MAC地址的缓冲单播帧。 组播单元指示客户端在信标之后保持唤醒以接收缓冲的多播帧,其包括指定客户端是其成员的多播组的目的地多播地址。 至少一个信标消息被指定为多播递送信标。 缓冲的多播帧在指定的多播信标之后发送。 组播元素包含条目列表,每个条目对应于组播MAC地址,组播IP地址或客户端标识符。

    METHOD FOR MULTICAST LOAD BALANCING IN WIRELESS LANS
    50.
    发明申请
    METHOD FOR MULTICAST LOAD BALANCING IN WIRELESS LANS 有权
    无线LAN中多播负载均衡的方法

    公开(公告)号:US20080151807A1

    公开(公告)日:2008-06-26

    申请号:US12035581

    申请日:2008-02-22

    IPC分类号: H04H20/71 H04L12/28

    摘要: A method for multicast load balancing in a wireless network having a plurality of access points. The method includes setting a maximum Internet protocol multicast bandwidth for the access points, receiving an admissions control request from a client at one of the access points, and determining whether the admissions control request from the client is for an admitted or unadmitted multicast stream at the access point. The access point is responsive to the admissions control request for the admitted multicast stream by servicing the admitted multicast stream and to the admissions control request for the unadmitted multicast stream by servicing the unadmitted multicast stream where the bandwidth required for the unadmitted multicast stream, plus that portion of the access point bandwidth currently used for all existing downlink multicast streams, does not exceed the maximum internet protocol multicast bandwidth for the access point.

    摘要翻译: 一种用于具有多个接入点的无线网络中的组播负载均衡的方法。 该方法包括为接入点设置最大互联网协议组播带宽,从接入点之一处的客户端接收招生控制请求,以及确定来自客户端的接入控制请求是否为接入点或未接纳的组播流 切入点。 所述接入点通过服务所述接入的多播流以及通过服务未被接纳的多播流来对未接纳的多播流进行接纳控制请求来响应所允许的多播流的接纳控制请求,其中所述未被接纳的组播流所需的带宽加上 当前用于所有现有下行链路多播流的接入点带宽的一部分不超过接入点的最大互联网协议组播带宽。