Abstract: A wireless LAN is comprised of a number of wired infrastructure devices, including at least one access point able to support a number of wireless communication devices configured to operate in the U-APSD mode. The wireless communications devices periodically contending for the wireless medium to transmit trigger messages to the access point and the access point responding by transmitting at least one frame of information. The wireless communications devices operate to synchronize the transmission of their trigger messages such that the possibility that the messages collide with one another is minimized.

Abstract: A wireless local area communications network that includes one or more access points each of which may have associated wireless communications devices in communication with it over a plurality of channels, some of which may be shared with a radar signal. The wireless communications devices are able to roam from one access point to another access point, in the presence of the channels shared with radar, in a seamless manner or in a manner in which the current communications session is not interrupted or delayed due to the requirement that any device in the network not transmit on those channels being shared with radar signals until the device can confirm that the channel is radar free. Furthermore, it is possible to guarantee that the communications session will not be disrupted during such roaming by configuring the wireless communications device to scan the wireless medium for only a minimum period of time necessary to detect a regularly occurring signal.

Abstract: A wireless LAN having a plurality of wireless phones with enhanced medium access control which enables QoS functionality and being further modified to provide priority transmission of frames of information are associated with one or more access points that have also been enhanced with QoS functionality. The wireless phones are utilized to transmit and receive frames of voice information to and from other wireless phones via the access points. The WLAN also includes a router that operates to forward frames of voice information from one access point to another or to an IPPBX. SVP functionality located on a network server or on each wireless phone assists to facilitate the efficient reception of frames of voice information by the wireless phones. The modifications made to each wireless phone enables them to transmit frames of voice information on a priority basis with respect to all other wireless phones associated with a particular access point.

Abstract: A wireless LAN is comprised of a number of wired infrastructure devices, including at least one access point able to support a number of wireless communication devices configured to operate in the U-APSD mode. The wireless communications devices periodically contending for the wireless medium to transmit trigger messages to the access point and the access point responding by transmitting at least one frame of information. The wireless communications devices operate to synchronize the transmission of their trigger messages such that the possibility that the messages collide with one another is minimized.

Abstract: A wireless local area communications network that includes one or more access points each of which may have associated wireless communications devices in communication with it over a plurality of channels, some of which may be shared with a radar signal. The wireless communications devices are able to roam from one access point to another access point, in the presence of the channels shared with radar, in a seamless manner or in a manner in which the current communications session is not interrupted or delayed due to the requirement that any device in the network not transmit on those channels being shared with radar signals until the device can confirm that the channel is radar free. Furthermore, it is possible to guarantee that the communications session will not be disrupted during such roaming by configuring the wireless communications device to scan the wireless medium for only a minimum period of time necessary to detect a regularly occurring signal.

Abstract: A local area network includes one or more wireless access points for receiving and sending voice and data messages from and to a mobile wireless communications device and a router to manage the delivery of messages to either a DHCP server, a VPN server, or the wireless access points. The DHCP server provides configuration parameters specific to a client requesting DHCP information. The VPN server operates, in conjunction with wireless communications devices to perform key exchange, mode configuration, client authentication, and to maintain the security of a VPN session. The wireless communications device includes a hybrid VPN client that operates, in conjunction with the LAN, to initiate the establishment of a VPN tunnel between the wireless communications device and the VPN server. The hybrid VPN client includes both software and hardware modules that operate together to limit communications latency during the establishment and maintenance of a VPN session.