97 results about "Wireless distribution system" patented technology

A wireless distribution system includes a number of remote units distributed in a coverage area to receive wireless signals and to provide the signals through the distribution system to input ports of a node where the signals are combined, a number of input power monitors operatively connected to one or more of the input ports to determine power levels of signals received at the input ports, variable gain controllers to control signals received at some or all of the input ports, a node to combine a plurality of signals from the plurality of input ports, and a controller to provide control signals to control one or more of the variable gain controllers.

A system and method for maintaining timing compatibility for high rate wireless transceivers employs a cycle stealing technique so that latencies introduced by multi-antenna signal processors in an access point can be masked. A speculative pre-stored, predetermined preamble is issued in response to a data transmission initiation from another access point, so that a responsive packet is sent within an acceptable protocol timing interval.

A portable encoded information reading (EIR) terminal for incorporation in a data collection system having a host computer, a plurality of peer EIR terminals, and a plurality of interconnected networks including one or more wireless networks, can comprise a central processing unit (CPU), a memory, an encoded information reading (EIR) device configured to output raw message data containing an encoded message or decoded message data corresponding to an encoded message, and at least one wireless communication interface. The EIR terminal can provide IEEE 802.11-conformant wireless distribution system services, including association, disassociation, distribution, integration, and re-association, to the peer EIR terminals. The EIR terminal can be associated with a home network and have a home address belonging to the address range associated with the home network. The EIR terminal can participate in one or more communication sessions and exchange messages, at least one of which can include decoded message data corresponding to an encoded message, with the host computer. The EIR terminal can maintain active communication sessions using its home address when roaming between the interconnected networks.

An aircraft communications and item tracking system is described. The system includes an RFID reader and a communications device located at fixed locations within the aircraft, a plurality of passive RFID tags operable for association with items within the aircraft, and a distributed antenna system comprising a plurality of antenna units and a wireless distribution system. The wireless distribution system is communicatively coupled to an aircraft communications network. The antenna units are communicatively coupled to the wireless distribution system and disbursed about the aircraft such that the RFID tags within the aircraft may be activated by signals output by at least one of the antenna units. The RFID reader and communications device are communicatively coupled to the wireless distribution system. The distributed antenna system is operable for transmission and reception of signals associated with the RFID reader and RFID tags. The distributed antenna system is further operable for transmission and reception of signals associated with the communications device.

A portable data terminal (PDT) adapted to participate in a wireless mesh network including a plurality of peer PDTs can comprise: a PDT module including an encoded information reading (EIR) device, and a mesh point (MP) module communicatively coupled to the PDT module. The MP module can include a microcontroller and at least one wireless communication interface and can be configured to perform IEEE 802.11-conformant wireless station services including authentication, de-authentication, privacy, and MAC service data unit delivery, and IEEE 802.11-conformant wireless distribution system services including association, disassociation, distribution, integration, and re-association. The MP module can be further configured, responsive to receiving a MAC frame addressed to a recipient inside the wireless mesh network, to deliver the MAC frame using the distribution service. The MP module can be further configured, responsive to receiving a MAC frame addressed to a recipient outside of the wireless mesh network, to deliver the MAC frame using the integration service. The MP module can be further configured to route an incoming MAC frame according to its destination address and the frame control field. The MP module can be further configured to cause the PDT module to exit said sleeping state responsive to receiving a mobile management software (MMS) wake-up command.

An access point establishing a wireless LAN is constructed to have a monitor system ‘b’ for monitoring an available channel for communication, in addition to a communication system ‘a’. In the event of detection of radar/radio signals, the access point changes a communication channel used for wireless communication from a current active channel to the monitored channel. Each terminal belonging to the wireless LAN recognizes and follows this channel change by detection of a beacon broadcasted by the access point. In the case of non-detection of radar/radio signals for one minute at the monitored channel, the wireless communication is reestablished immediately at the monitored channel recognized as a CAC (channel availability check)-finished channel. This series of processing is also applicable to inter-access point communication, for example, communication in a WDS (wireless distribution system) mode. This arrangement desirably prevents the potential interruption of wireless communication in a 5 GHz frequency band for a significant period, in the event of detection of radar/radio signals, for example, a weather radar.

The present invention relates to a dynamic wireless meshing network system, which applies a management frame stipulated in IEEE 802.11 standard for regulating access point (AP) to a wireless distribution system (WDS) mode and adds an information element (IE) to the management frame, enabling an AP to select another AP having smaller hop count value and service hop count value to establish a wireless link therewith according to information in a hop count field and a service hop count field of the IE provided by the another AP and to determine whether a wireless link therebetween should be established according to information of real time network flow in a RunOutofVport field of the same IE for achieving the goal of establishing a dynamic wireless meshing network system with high efficiency, low loading and simple topology for supporting load balance and flow control.

The invention provides a method for building wireless distribution system connection, comprising the steps that an access point and a repeater are started in a wireless distribution system; the access point and the repeater transmit interactive packets and obtain channel information, channel encryption mode, key information and terminal address information from the interactive packets; the access point and the repeater build wireless distribution system connection according to channel information, channel encryption mode, key information and terminal address information. The invention also provides a device for building wireless distribution system connection, comprising a starting module, an interactive module, and a building module. The invention overcomes the problem that the method for building wireless distribution system connection in the prior techniques needs a user to manually input to determine channel built for WDS connection, which results in the process of building connection complex, therefore, automatic optimum configuration for WDS connection channel is realized, and user's operation is more quick and the quality and speed of connection is also improved.

The present invention is to provide a wireless routing mechanism by applying a management frame defined in IEEE 802.11 standard to different access points (AP) in a wireless distribution system (WDS) and adding an information element (IE) to the management frame, enabling any AP to be capable of maintaining the integrity of IE based on its own setting and state, determining other APs' operations in WDS based on a received IE and determining whether a physical link (i.e., wireless link) between itself and any of other APs should be established to provide a channel for sending data frames therebetween and automatically establishing a stable, flexible and expansible wireless network topology in a wire network infrastructure based on information contained in a plurality of fields of the IE.

The invention provides a method and device for establishing bridge connection with a router and the router. The method comprises the steps that a triggering request is obtained, and connection with a first router in a current network is established; a bridge connection request is sent to the first router, and main router information fed back by the first router is received; according to the main router information, configuration information of a wireless distribution system (WDS) is automatically updated, and bridge connection is established with a main router. By the adoption of the method for establishing bridge connection with the router, the current router can automatically be in bridge connection with the main router in the network, the whole process is automatically completed by the routers, manual setting by a user is not needed, operation difficulty is reduced, and operation process is simplified; in addition, due to the fact that a bridge network is established with the main router, the effective range of the wireless network is expanded, wireless network signals can be evenly distributed, the problems that signals through-wall ability is poor, and a dead corner is generate are solved, and user experience is improved.

A broadband wireless distribution network for a passenger cabin area of a mobile platform. The broadband wireless distribution network includes a plurality of wireless access points (WAPs) connected to a server and switching system and a plurality of wireless network interface circuits (NICs) strategically located about the passenger cabin. Additionally the broadband wireless distribution network includes a plurality of antennas connected to the WAPs such that at least one antenna is connected to each WAP. The antennas are capable of providing RF coverage patterns to specific overlapping areas within the passenger cabin, thereby allowing communication between each WAP and at least one NIC.

The present invention applies management frame defined in IEEE 802.11 standard to a wireless distribution system (WDS) mode by adding an information element (IE) into the management frame, which enables any access point (AP) in WDS to maintain IE based on its own setting and state, then send IE via the management frame for providing state of the AP under WDS mode, determine whether a physical link (i.e., a wireless link between APs) should be established therewith based on received IE, and maintain the established physical link through the wireless management frame in a real time manner. Thus, the existence and necessity of the physical link between different APs in WDS can be determined correctly.

The invention discloses a method and a device for access point automatic alignment in a wireless distribution system. The method comprises the following steps: after an access point AP is started, a neighbouring AP is searched on a supported channel, an authentication request is sent to the searched neighbouring AP and an obtained key request is sent to the neighbouring AP after the passing authentication; and after a response message of the key request of the neighbouring AP is received, the AP performs decryption to the response message of the key request to obtain an encryption mode and a key is configured in the local area. The invention also discloses an access point automatic alignment device in the wireless distribution system. The invention automatically realizes the AP alignment in a WDS, the configuration parameters of all the APs are accurately sent and the scheme is easy to realize and practical.

A method for a establishing wireless distribution system link between two access points includes the steps of: providing an input module for each access point; receiving a first input to enter a master mode by an input module of a first access point, and transmitting a broadcast frame by the first access point; receiving a second input to enter a slave mode by an input module of a second access point, and scanning the broadcast frame by the second access point; transmitting a request frame from the second access point to the first access point; and transmitting an acknowledgement frame from the first access point to the second access point. An access point relating to the method is also provided.

A packet transmission method is provided herein. The packet transmission method is adapted for a wireless distribution system. The packet transmission method includes: generating a packet by an access controller or a wireless access point; determining whether the packet belongs to CAPWAP (Control and Provisioning of Wireless access point s) packet; adding a tag into a packet descriptor corresponding to the packet when the packet belongs to CAPWAP packet; transmitting the packet to the wireless access point or transmitting the packet to the access controller; determining whether an error is occurred during transmitting the packet; determining whether the packet descriptor corresponding to the packet includes the tag when the error is occurred during transmitting the packet; and adding the packet into a queue when the packet descriptor corresponding to the packet includes the tag.