82 results about "Sleep interval" patented technology

A novel sleep regulating pharmaceutical formulation is introduced, typically implementing two principal drugs having actions which are reversive to one another, yet incorporated into a unitary solid dosage, and prepared for oral administration before bedtime. Usually, structure is configured to initially release a calmative or other sleep-compatible substance by prompt dissolution. The initial release is followed by a specific period of delay, which in basic formulations entails no release of any drug, and which allows a nominal interval of sleep. At the terminus of the delay, a final agent is released to induce wakeup. Incorporation of agents of opposite action within a unitary dosage form renders utility which is uniquely appropriate to the invention. In a preferred embodiment, delay of release and final delivery of wakeup agent are arranged by a dialysis membrane which eventually bursts as a result of osmotic pressure generated by a hydrophilic core.

Disclosed is a power saving mode control system (200) and method in a wireless portable Internet system. Stations in the sleep mode are grouped by aligning listening intervals of the stations which enter the sleep mode in the power saving management system wherein the sleep interval for receiving no traffic data is exponentially increased. Therefore, the sleep mode of the grouped subscriber stations are easily managed, and power saving efficiency is enhanced and system complexity is lowered by easily and quickly detecting data states provided to the corresponding stations.

Techniques for processing requests from a processing thread for a shared resource shared among threads on one or more processors include receiving a bundle of requests from a portion of a thread that is executed during a single wake interval on a particular processor. The bundle includes multiple commands for one or more shared resources. The bundle is processed at the shared resource(s) to produce a bundle result. The bundle result is sent to the particular processor. The thread undergoes no more than one wake interval to sleep interval cycle while the bundle commands are processed at the shared resource(s). These techniques allow a lock for shared resource(s) to be obtained, used and released all while the particular thread is sleeping, so that locks are held for shorter times than in conventional approaches. Using these techniques, line rate packet processing is more readily achieved in routers with multiple multi-threaded processors.

Disclosed is a method for establishing a sleep mode in a broadband wireless access communication system. The method for establishing the sleep mode includes a first step of placing a subscriber station into the awake mode after time having a maximum window value lapses, determining whether or not a message representing that there exists data to be transmitted from a base station, placing the subscriber station into the sleep mode when the received message represents that there does not exists data to be transmitted from a base station, and establishing a window value for a present sleep mode based on than a preset window value of a previous sleep mode loop within the maximum window value.

An apparatus and method for controlling a sleep mode in a wireless access communication system. The apparatus determines a predetermined number of groups for grouping at least one subscriber terminal according to type information of a paging interval equal to the sum of the sleep interval and the listening interval, and registers the subscriber terminal in one group from among the groups on the basis of the paging interval type of the subscriber terminal. Upon receipt of the group information, the apparatus controls a base station to pre-recognize a terminal woken up at a predetermined time from among a plurality of terminals entering the sleep mode, resulting in reduction of the number of unnecessary paging message transmissions and improved efficiency of the wireless access communication system.

The present invention provides a method of wireless communication with a base station. The method may include providing a resource request message comprising information indicative of entry into a sleep mode and receiving an acknowledgment from the base station in response to providing the resource request message.

A method and a system for periodic ranging in a sleep mode of a broadband wireless access communication system having an awake mode in which data to be transmitted between a mobile subscriber station (MSS) and a base station (BS) exists and the sleep mode in which data to be transmitted between the MS and the BS does not exist, the sleep mode having a sleep interval and a listening interval, the MSS being capable and incapable of receiving data in the listening interval and in the sleep interval, respectively. The BS reports to the MSS in a listening interval before the sleep interval that the MSS must perform the periodic ranging in the sleep interval when the BS detects that it is necessary for the MSS in the sleep mode to perform the periodic ranging at a particular time point in the sleep interval.

A sleep timer for changing a power state of a device includes a detector, a memory, a sleep interval setting unit, a timer, and a power unit. The detector detects interactions between a user and an active device. The memory is linked to the detector and stores the historical user interaction data. Based on the historical user interaction data, the sleep interval setting unit adjusts the sleep timer's sleep interval. The timer determines a power changing point in time based on the sleep interval. At the power state changing point in time, the power unit initiates a power state change.

The present invention provides a dual mode mobile device that can use both cellular-based and IP-based applications with single application program interface and without having separate and distinct subsystems for each communications mode. The device may also include a power management module that considerably reduces the power consumption of the device by periodically entering a deep sleep mode for a predetermined sleep interval, changing power modes based on the status of one or more applications, automatically changing power modes based on incoming packets or a combination thereof. The device may also include a remote management module to diagnose, troubleshoot and solve problems involving one of the networks by using the device's ability to communicate using the other network. The dual mode capability of the mobile device allows a remote management server or operator to analyze, document and solve problems with the mobile device and / or its connections to a network.

A method for memory management in a mobile device, and a mobile device for performing the method, are provided. The mobile device performs garbage collection in a flexible manner after transitioning from the sleep state to the wakeup state according to the paging cycle. This contributes to securing the sleep interval for the mobile device and reducing power consumption. The memory management method includes transitioning from a sleep state to a wakeup state, performing a paging procedure in the wakeup state, determining whether to initiate garbage collection after completion of the paging procedure, performing, when it is determined that garbage collection is to be initiated, garbage collection according to a paging cycle, and transitioning from the wakeup state to the sleep state after completion of garbage collection.

According to an aspect, a wireless station uses a low-frequency clock during sleep intervals and a high-frequency clock during awake intervals. Drift between the low-frequency clock and the high-frequency clock are corrected to enable aligning a wake time instant of the wireless receiver with start of beacon transmissions from an access point, and thereby to reduce power wastage. According to another aspect, errors between the clock of an access point and that of a wireless station are corrected. The wireless station computes an error between the clocks, and extrapolates the error for a sleep interval to compute a wake-up time instant. The correction and extrapolation are performed in every awake interval. Again, undesired power consumption in the wireless station is thereby reduced.

A wireless receiver has a preamble detection apparatus and method which waits until the expected arrival of a beacon frame, after which power is cyclically applied during a preamble detection interval and a sleep interval until a preamble is detected. The preamble detector has a first mode with a longer preamble detection interval and a second mode with a shorter preamble detection interval. During the preamble detection interval, power is applied to receiver components, and during the sleep interval, power is not applied. The duration of the preamble detection interval is equal to a preamble sensing interval, and if a preamble is detected, power remains applied to a preamble processor for a preamble processing interval. The duration of the sleep interval is the duration of a long preamble less the sum of two times the preamble detection interval plus the preamble processing interval. Phase lock loop (PLL) power is applied a PLL settling time prior to and during the preamble detection interval.

A method for controlling sleep mode of a base station and a mobile station in wireless communication networks, including: determining N of the N-ary exponential sleep mode to decide a length of sleep duration including a sleep interval; measuring downlink traffic addressed to the mobile station at the beginning of a listening interval right after the sleep interval; and when there exist downlink traffic, confirming whether the measured downlink traffic satisfies a mode transition condition. The method further includes: conducting a sleep interval of the next sleep duration of which the length is determined by multiplying the length of the current sleep duration by N unless the downlink traffic satisfies the mode transition condition; and transmitting the downlink traffic to the mobile station when m times the additional consecutive sleep duration is expired or when the measured amount of the downlink traffic satisfies the mode transition condition.

A method for improving power saving performance of a mobile station in an IEEE 802.16e system is provided. The method includes a first process for determining whether a synchronization condition is satisfied, the synchronization condition being that a service connection newly requested to switch to a sleep mode is low QoS insensitive to delay and there are one or fewer service connection that is in a sleep mode and whose connection type is high QoS sensitive to delay among other service connections; a second process of transmitting to a base station a sleep request message for equalizing a start time of a sleep mode of the service connection to a start time of a next sleep interval of a service connection already in the sleep mode, matching a minimum sleep interval of the service connection to the next sleep interval of the service connection already in the sleep mode, and matching a maximum sleep interval of the service connection to a maximum sleep interval of the service connection already in the sleep mode, for sleep-mode synchronization among a plurality of service connections in a mobile station when the synchronization condition is satisfied; and a third process for switching the service connection to a sleep mode indicated by the sleep request message upon receipt of a sleep response message from a base station in response to the sleep request message.

A technique is disclosed which achieves both a reduction of the power consumption and an efficient access control at each of wireless nodes in a wireless communication system. According to this technique, a given period at the beginning of which a beacon is transmitted from a gateway (GW) (100) is specified that it is divided into an active interval during which each wireless node (P2P tag) transmits / receives frames and a sleep interval during which the frame transmission / reception operations are inactive. Further, the active interval is divided into a plurality of timeslots having a fixed length, and in particular, divided into intervals during which different types, that is, the GW, fixed nodes (P2P-S tags) and mobile nodes (P2P-M tags) may perform their respective frame transmissions. Each P2P tag selects, from the intervals of its own type, a timeslot at random and uses the selected timeslot to be on standby for a random standby time and then transmit a frame including information to be used for determining the ID of that P2P tag, the selected timeslot and the standby time.

A broadband wireless access communication system having a sleep mode in which no data is to be transmitted or received by a subscriber station to / from a base station and an awake mode in which data is to be sent to / from a subscriber station The base station transmits or receives. After the sleep interval between the start time of the sleep mode and the start time of the wake-up mode reaches a given maximum window value, the subscriber station sets the next sleep mode. The subscriber station receives a traffic indication message after the start time of the wake-up mode, and the message indicates that there is no data to be transmitted from the base station; sends a sleep request message to the base station; receives a response message of the sleep request message from the base station; and then in the next sleep mode in operation.

The invention discloses a DRX device based on an LTE system and a control method thereof, which belong to the field of mobile communication. The device comprises a service data buffer, a control module, an initial sleep interval calculation module and a sleep interval calculation module, wherein the control module is respectively connected with the service data buffer, the initial sleep interval calculation module and the sleep interval calculation module. The device and the control method thereof realize the variable exponential growth of a sleep period and determine the next initial sleep interval according to the state order of the former sleep mode. A mathematical simulation model is established according to an algorithm, the performance of which is analyzed in the aspects of energy consumption and time delay, and the result of the simulation shows that the improved device and the control method thereof have better performance. The device and the control method thereof has simple structure, low construction cost and stabile and reliable running.

A receiving apparatus with intermittent receiving for receiving a TDMA SIG is disclosed. The receiving apparatus receives a FRQ reference SIG to control a voltage controlled OSC for generating a system clock and receives a TDMA synchronizing SIG to control the phase of a TDMA timing SIG to establish the reference FRQ synchronizing and the TDMA synchronizing. To save a power consumption in the sleep interval during the intermittent receiving, it is stopped to supply a supply power to a d / a converter supplied with the FRQ control data to supply a FRQ control voltage to the voltage controlled OSC. Just before an intermittent receiving interval, that is, the end of the sleep mode, the supply power to the d / a converter is supplied and the TDMA timing is compensated by calculation from the sleeping interval and the FRQ of the self-oscillation of the voltage controlled OSC. The TDMA timing may be not compensated but receives the TDMA synchronizing SIG to control the TDMA synchronizing if the phase difference in the TDMA timing is within the range of the correlator. The FRQ reference SIG may be received to compensate the FRQ and phase of the system clock and the TDMA synchronizing timing may be compensated by calculation from the sleeping interval and the FRQ of the self-oscillation of the voltage controlled OSC.

Embodiments of the invention disclose an energy-saving control method for a self-service device. The method and the apparatus are used for solving the problem that the sleep interval time is too short in the case of larger user quantity, the self-service device repeatedly sleeps, and the sleep interval time is too long in the case of smaller user quantity, resulting in resource waste. The method disclosed by the embodiment of the invention comprises the following steps: obtaining sample information to be learnt from historical data used by a self-service device user; learning the sample information to be learnt according to a preset Bayesian prior probability model to obtain a learning result; updating the Bayesian prior probability model according to the learning result; predicating the user quantity within each time period by adopting the updated Bayesian prior probability model to obtain the predicted user quantity of the self-service device; and adjusting the sleep interval time of the time periods of the self-service device according to the predicted user quantity. The embodiments of the invention further disclose an energy-saving control apparatus for the self-service device.