Abstract: A method, system and apparatus for synchronizing multiple streams of a communication session between a wireless station device (STA) and one or more communication devices via a wireless access point (AP) of a wireless local area network (WLAN), includes a host processor determining a synchronization period in accordance with packetization periods of each of the multiple streams, switching the STA to a doze mode until expiration of the synchronization period, buffering packets generated during the synchronization period, and switching the STA from the doze mode to an active mode upon expiration of the synchronization period and decompressing or transmitting packets generated while the STA is in the active mode.

Abstract: Determining the reasons for packet loss in a wireless local area network; such as an IEEE 802.11 network. The method uses the strength of received signals at a wireless station, such as the received signal strength indicator (RSSI), noise levels (e.g, non-802.11 energy in the 2.4 GHz frequency range), and packet loss information together to determine the network status. In most implementations, the 802.11 implementation (e.g., the 802.11 driver) is responsible for maintaining statistics on the RSSI and the noise whereas the measure of the packet loss is the responsibility of the application. The network status is determined by the endpoint station independent from the access point.

Abstract: A method of creating hyperlinks from an electronic document and for accessing printed hyperlinks is described. A document 12 including URLs is printed as printed document 24. Image information 28 from the hyperlink location 26 is extracted and saved together with URL information 18 in database 30. To access the hyperlink, a reader captures an image of the hyperlink information and uses this to query database 30 which returns hyperlink information 18.

Abstract: Embodiments relate to a portable computer comprising first and second substantially planar portions; the first portion comprising a first output display device of a first size; the second portion comprising a keyboard having a plurality of actuable keys and a touch sensitive display selectively operable as at least one of a further output display device and an input device.

Abstract: A method of organizing data, comprising receiving an image from an input device; recognising content in the image; and selecting, based on the content, a destination for at least one of the image and the content.

Abstract: An unconnected power save method reduces the battery consumption of a wireless station in a wireless local area network (WLAN). A wireless station enters a sleep mode between scans for a prospective access point. The sleep duration time is determined using the current position of the station relative to the WLAN network topology.

Abstract: A method for reducing the number of channels that are scanned during a handoff situation for a wireless endpoint station in a wireless local area network (WLAN), such as an IEEE 802.11 network, by tracking past user movements within the WLAN. A suitable sequence of channels to be scanned is generated so that reduce the number of handoffs are reduced and the average time during a handoff is reduced. To reduce handoffs and handoff latencies, the principle of locality (user movement patterns tend to be repetitive) is used. By tracking the past handoffs, future handoffs are predicted.

Abstract: Methods and apparatus to manage power consumption in wireless devices are disclosed. A disclosed example apparatus comprises a motion detector to detect motion, and a wireless modem to perform a background scan when motion is detected.

Abstract: A system and method are provided for improving the throughput of wireless networks, such as IEEE 802.11 networks. Individual devices in the network determine the level of activity on the network. In the event that the network is active, the devices increase throughput by skipping the pending packet transmission and appending its data payload to a future packet transmission. By encoding multiple payloads in a single packet transmission, packet overhead is reduced and MAC layer delays are eliminated. The data payloads are subsequently split back into individual packets for transmission over the wired portion of the network.

Abstract: A subscriber device capable of Voice over Internet Protocol (VoIP) communication via a wireless connection with an 802.11 access point to an Internet Protocol (IP) based network includes a codec for encoding a signal into a Real Time Protocol (RTP) packet and a controller for controlling a bit-rate at which the codec encodes the signal. The codec encodes the signal at a first bit-rate during normal transmissions and encodes the signal at a second bit-rate lower than the first bit-rate upon occurrence of a predetermined triggering event.

Abstract: Disclosed above are various embodiments of VoIP communication systems that utilize low cost IP phones that rely on a centralized VoIP controller for much of the processing. Reducing the processing taking place on an IP phone may reduce the number of components that need to be on the IP phone which may result in a less expensive IP phone in terms of both cost and power. When the IP phone is embodied as a WIPP, the reduced processing may also result in more efficient communication between the WIPP and an AP. The increased communication efficiency may result in less power being used by the WIPP and effectively extend the battery life. Since a number of redundant components have been centralized, the VoIP system as a whole may be less costly. Also, centralized control may provide greater functionality and versatility in the setup and configuration of a VoIP communication system.

Abstract: A system and method are provided for improving the throughput of wireless networks, such as IEEE 802.11 networks. Individual devices in the network determine the level of activity on the network. In the event that the network is active, the devices increase throughput by skipping the pending packet transmission and appending its data payload to a future packet transmission. By encoding multiple payloads in a single packet transmission, packet overhead is reduced and MAC layer delays are eliminated. The data payloads are subsequently split back into individual packets for transmission over the wired portion of the network.

Abstract: A method for transmitting voice data traffic over a wireless medium using a decision process for the admission of a voice call, such as a call voice over Internet Protocol (VoIP) over a wireless local area network (WLAN). Admission of the call through the network is based upon the priority level of the call and a congestion level of the WLAN in order to increase the quality and the number of calls on a BSS. Paramters such as codec and packetization periods are selected for the call based upon the priority and congestion level. As the level of congestion in the network Increases, only calls above a certain Priority level are allowed into the network.

Abstract: A method for reducing the number of channels that are scanned during a handoff situation for a wireless endpoint station in a wireless local area network (WLAN), such as an IEEE 802.11 network, by tracking past user movements within the WLAN. A suitable sequence of channels to be scanned is generated so that reduce the number of handoffs are reduced and the average time during a handoff is reduced. To reduce handoffs and handoff latencies, the principle of locality (user movement patterns tend to be repetitive) is used. By tracking the past handoffs, future handoffs are predicted.

Abstract: An unconnected power save method reduces the battery consumption of a wireless station in a wireless local area network (WLAN). A wireless station enters a sleep mode between scans for a prospective access point. The sleep duration time is determined using the current position of the station relative to the WLAN network topology.

Abstract: Determining the reasons for packet loss in a wireless local area network; such as an IEEE 802.11 network. The method uses the strength of received signals at a wireless station, such as the received signal strength indicator (RSSI), noise levels (e.g, non-802.11 energy in the 2.4 GHz frequency range), and packet loss information together to determine the network status. In most implementations, the 802.11 implementation (e.g., the 802.11 driver) is responsible for maintaining statistics on the RSSI and the noise whereas the measure of the packet loss is the responsibility of the application.

Abstract: A system and method for transmitting voice data traffic over a wireless medium, such as a voice call using a wireless Internet Protocol mobile phone on a wireless local area network, to increase the quality and the number of voice calls on a Basic Service Set. Endpoints are capable of dynamically switching to alternate voice coding profiles. The WLAN is surveyed by a wireless endpoint to determine whether a congested network condition exists. Coding profiles may be dynamically switched to decrease the congested conditions and improve call quality. If dynamically switching of profiles in not available then the wireless endpoint gracefully degrades the transmission by periodically dropping packets until network congestion reduces and/or call quality increases.