Abstract:
PROBLEM TO BE SOLVED: To provide a computer packaging method for the power management of a network interface device. SOLUTION: The method includes: steps for dividing a time period into a plurality of time slots; determining an amount of data received by the network interface device (NID) during a first time slot; and determining whether the amount of data received exceeds a predefined threshold. If the amount of data received exceeds the predefined threshold, the NID is caused to be awake during a subsequent time slot. The NID is caused to sleep during the subsequent time slot unless the amount of data received exceeds the predefined threshold. The number of time slots during the time period in which one or a plurality of packets have been received by the NID is compared with the number of wakeup time slots during the time period (the number of time slots during which the NID is awake). Based on the comparison, the number of wakeup time slots is adjusted for a subsequent time period. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a network node selects a "sleep" level, based on its current or forecasted battery capacity. SOLUTION: In an embodiment of the invention, sleep levels define the types of communication, to which a node in question will be a party and the physical radius within which the wireless network node will engage other devices. The node in question communicates its selected sleep level to the rest of the network so that the other network nodes can communicate in accordance with the node. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for transporting interference-related control data and other information between nodes in a wireless network, using a control channel that is distinct from a content channel used to transport contents. SOLUTION: The control channel may be a different channel in the same unlicensed band as the content channel, a channel in a different unlicensed band, or a channel in a licensed band, and thereby not being subject to the same interference-related problems that the unlicensed content channel may experience. As a result, management information for adjusting the content channel's communication parameters can still be communicated between the nodes, whereby reduction actions can be taken. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an architecture comprising a flexible and extensible framework embodied in a robust coexistence service that couples sensed RF spectrum (interference) data to modules that process the data into dynamic feedback information used to mitigate network communication problems caused by the interference. SOLUTION: Spectrum sensor hardware is connected to the framework running on a computing device, where the condition and quality of various wireless networking channels are assessed by external modules plugged into the framework. Modules include a classifier component that examines the sensed-data and classifies them, and an application program that processes the classified data, possibly for mitigation. Mitigation-related information is fed to a feedback mechanism to adjust network parameters to avoid the sensed interference. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a protocol by which wireless network communication devices, comprising peer nodes (such as computer systems and access points), that cooperatively exchange information about RF interference detected in the network. SOLUTION: The protocol administers the exchange of formatted control data, corresponding to the detected interference among computing nodes running a service capable of processing the control data. A peer table is used to maintain locally-obtained and remotely-obtained control data. Records in the peer table are arranged with different levels of granularity, with respect to interference and networking information. The interference information collected via the cooperative protocol may then used by peer devices in the network to adapt to relax interference-related problems. The protocol also provides for discovery of peer node capabilities, including a negotiable transport for the control data that can be different from the main data channel transport. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for selecting a network and an interface which span a plurality of media. SOLUTION: This disclosed system facilitates automated network interface configuration decision-making, that spans a set of networks supporting communications via differing media. A set of media specific modules associated with differing communications media acquire network interface status/capabilities information. A rules engine thereafter applies a designated network selection rules to the acquired network interface status/capabilities information, and any other appropriate parameters attributable to either an interface or network, and selects one or more networks and interfaces, in order to establish/maintain a connection. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for managing power consumption, in a portable computing device having a network interface module. SOLUTION: A power management module receives inputs from other modules, and determines whether the network interface module is to be put in a doze state for a predetermined number of beacon intervals, to prevent waste of power consumption in the network interface module. The network interface module in a device, that is associated with a network, is put in the doze state, after an event has occurred including when a scan has been performed, after a delayed sleep timer has reached time out; and after transmission of beacon has been completed and when no traffic is buffered with respect to the device. The delayed sleep-time is set, based on the estimated round trip time of a packet. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for managing power consumption in a portable computing device having a network interface module.SOLUTION: A power management module receives inputs from other modules and determines whether the network interface module is to be put in a doze state for a predetermined number of beacon intervals to conserve power consumption in the network interface module. The network interface module in a device that is associated with a network is put in the doze state after an event has occurred including when a scan has been performed, after a delayed sleep timer has expired, and after a beacon transmission has been completed and no traffic is buffered for the device. The delayed sleep-time is set based on the estimated round trip time of a packet.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a system for controlling electric power consumption in a mobile computing device that has a network interface module. SOLUTION: A power management module receives an input from another module, and determines whether to put the network interface module in a doze state during an interval corresponding to a predetermined number of beacons to prevent a waste in electric power consumption in a network interface module. As for a network interface module of a device that is related to a network, after an event including the time of scanning occurs, after a delay sleep timer times out and after transmission of a beacon is completed and when traffic is not buffered for the device, the network interface module is put in the doze state. A delay sleep time is set based on an estimated round trip time of a packet. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide contention-free quality of service to a wireless station. SOLUTION: A station indicates an access point that data of high priority (such as time constrained data) are scheduled to be transmitted to the access point. The access point receives the indication and selects a slot time for the station on the basis of the number of the other stations including the indicated high-quality data. The slot time is selected such that the station can check for access to a common wireless link before any arbitrary station including low-priority data (data without time constraints). The access point transmits the selected slot time to the station, and the station receives the slot time. When an instruction indicating that an application includes high-priority data to transmit is received, the station checks the common radio link for availability at the selected slot time. COPYRIGHT: (C)2005,JPO&NCIPI