122 results about "Frequency management" patented technology

A system and method for managing licensed and unlicensed frequency bands in a wireless wide-area network includes establishing the available channels of a licensed band and unlicensed band of frequencies. Data traffic is prioritized for assigning channels. Higher priority data traffic is assigned to the licensed frequency band and lower priority data traffic is assigned to the unlicensed frequency band. Channel quality is determined, wherein higher priority traffic is assigned to lower noise channels. Data traffic is shifted from the channels of the unlicensed frequency band to the channels of the licensed frequency band if the quality of the channels of the unlicensed frequency band deteriorates below a predetermined acceptable threshold.

An information retrieval apparatus includes contents, an index data generating unit, a character frequency management data generating unit, a compressing/encrypting unit, a retrieval initializing unit, a full text retrieving unit, and a retrieval result displaying unit. The character frequency management data generating unit generates character frequency management data based on the contents. The compressing/encrypting unit compresses the contents and encrypts the character frequency management data. The retrieval initializing unit decrypts encrypted character frequency management data. The full text retrieving unit executes full text retrieval for compressed contents using the character frequency management data and index data when receiving a retrieval keyword. The retrieval result displaying unit decompresses a retrieval candidate selected from retrieval candidates and displays as a retrieval result.

A frequency management method and device as well as a wireless system are provided by which acceptable transmit power is efficiently determined for transmitting stations in a system on the interfering side, neither with concentration of processing load on some part nor with redundant processing. When a frequency management apparatus (50_—1) receives a notice regarding a change in the state of frequency use from a radio station (20_—1) under its own management (S101), the frequency management apparatus (50_—1) sets acceptable transmit power for radio stations (20_—1, 20_—2) under its own management and radio stations (20_—3, 20_—4) managed by another frequency management apparatus (50_—2), based on the notified change in the state of frequency (S103, S104).

In one embodiment, an integrated circuit includes a self calibration unit configured to iterate a test on a logic circuit in the integrated circuit at respectively lower supply voltage magnitudes until the test fails. A lowest supply voltage magnitude at which the test passes is used to generate a requested supply voltage magnitude for the integrated circuit. In an embodiment, an integrated circuit includes a series connection of logic gates physically distributed over an area of the integrated circuit, and a measurement unit configured to launch a logical transition into the series and detect a corresponding transition at the output of the series. The amount of time between the launch and the detection is used to request a supply voltage magnitude for the integrated circuit.

Apparatus and systems, as well as methods and articles, may operate to select a microprocessor clock frequency responsive to a desired voltage and/or a desired temperature of operation.

A frequency manager automatically selects a clock frequency for each device or bus, or for a plurality of devices or buses, in a system, based on various factors and objectives. These factors and objectives can include optimizing performance of the devices without exceeding the system's power/thermal budget. The frequency manager can then control circuits that generate and provide clock signals having the selected frequency(ies) to these devices or buses. For example, in a system that is less than fully populated with devices, embodiments of the invention can select higher clock frequencies than a fully populated system would utilize. Some embodiments of the invention select higher clock frequencies for high-bandwidth devices than for low-bandwidth devices. Other embodiments use information about application programs that will be executed by systems, such as which devices these application programs will frequently access, to select higher clock frequencies for the frequently accessed devices. Yet other embodiments use information about whether the application programs are more memory or I/O intensive to allocate higher clock frequencies to either memory subsystems or I/O subsystems.

In one embodiment, an apparatus includes a first receiver path with a first digitizer to digitize an incoming signal obtained from a radio frequency signal including at least a first desired channel into samples, the first digitizer to operate at a first sampling frequency, a first sample rate converter coupled to an output of the first digitizer to receive the samples at the first sampling frequency and to output the samples at a fixed sampling frequency, and a first digital processor to receive and process the samples at the fixed sampling frequency. The apparatus may further include a controller to receive a frequency change indication and to dynamically control the first sample rate converter to accommodate a change in the first sampling frequency from a first rate to a second rate.

The invention relates to an open vibration valve with the electric proportional control function and the pressure compensation function and used for a road roller. The open vibration valve is characterized in that a valve block is provided with a pressure compensation valve (1), a three-position four-way electric proportional valve (2), a shuttle valve (3), a two-position two-way reversing valve (4), a variable throttling valve (5), a throttling orifice (6) and a one-way valve (7), an opening P, an opening T, an opening TT, an opening A and an opening B are formed in the valve block, the opening P serves as an oil inlet of the valve block, and is connected with an outlet of a gear pump, the opening T serves as an oil return opening of the valve block, the opening TT serves as an oil return opening of the pressure compensation valve (1), the opening A is connected with an oil inlet of a vibrating motor, and the opening B is connected with an oil outlet of the vibrating motor. According to the open vibration valve with the electric proportional control function and the pressure compensation function and used for the road roller, the reversing unloading function of a common vibration valve can be achieved, stepless speed adjustment can be achieved, an open system can have speed adjusting performance similar to speed adjusting performance of a closed system, and speed frequency management of the open system can be achieved.

The present invention provides an apparatus and method for optimizing power in order to increase capacity. Rather than having any terminal device limited to a specific maximum data rate, instead the terminal device data rate is limited by the power being used, such that the data rate can vary according to the distance that the terminal device is from the intended receiver.

The invention discloses a data consistency and wear leveling-based memory file system management method. A persistent memory file system is subjected to data consistency and writing wear leveling at the same time in data updating operation, and file updating operations include three updating modes of file on-site updating, appending and partial appending. The data consistency of the memory file system is cooperatively realized through three modules of metadata management, data consistency and log management, and the file updating operations. A nonvolatile storage management function is cooperatively realized through three modules of page allocation, idle page management and wear leveling, and the file updating operations. A wear leveling function is cooperatively realized by two sub-modules of data area page writing frequency management and indexing, and other modules in storage management, so that all the file updating operations are subjected to writing wear leveling while data consistency updating is realized.

The invention discloses a frequency spectrum detection and frequency allocation system and method, which are used for reducing the overhead of a leasing network on frequency spectrum detection and improving the efficiency of frequency spectrum detection. The frequency spectrum detection and frequency allocation system comprises a frequency management device, and frequency spectrum detection devices respectively arranged for each frequency allocation area of an authorized network, wherein the frequency spectrum detection devices are used for carrying out frequency spectrum detection on the frequency allocation areas of the targeted authorized network and reporting the detected frequency occupation information of the frequency allocation areas to the frequency management device; and the frequency management device is used for determining the working frequency used by each base station in the leasing network according to the frequency occupation information of the authorized network, reported by the frequency spectrum detection devices, so as to avoid interfering the authorized network.

A base station device includes a plurality of directional antennas, a power control unit and a frequency management unit. The cell is formed with layers of a base cell having a cell border with a cell formed by a neighboring base station device and including a plurality of sector cells and a small-cell having a cell radius smaller than a cell radius of the base cell and including at least four sector cells by the plurality of directional antennas and the power control unit. The frequency management unit manages frequency bands so that different frequency bands are allocated to the sector cells of the base cell, and a frequency band, which is different from the frequency bands allocated to the base cell and different between neighboring sector cells but the same between at least two sector cells, is allocated to each of the sector cells of the small-cell.

A base station assigns a most appropriate carrier from wide frequency bands in response to a re-request for channel establishment received from a mobile station, even if a same slot as a slot last assigned is assigned. Furthermore, a frequency management table is managed in which carriers that form a radio channel and are grouped by a specific number thereof so as to be distributed over wide frequency bands. Priorities used to search groups are individually provided for base stations that form a system. This allows neighboring base stations to distribute carriers over the wide frequency bands.

The invention discloses a method for optimizing operation frequency by combining static compiler and dynamic frequency-modulation technology. The invention comprises employing static compiler separation separating code segment into three related segments, which are the operating initialization segment, the dynamic frequency-modulation technology segment and the operating finishing segment; according to the relationship of the processor and the main storage in dynamic frequency-modulation, setting corresponding operating frequency of the processor and the main storage via the dynamic frequency management technology to save power. The inventive method is characterized in that it improves prior power saving technology which controls the power consumption of the processor and the main storage to lower power consumption when the system is operating.

A frequency manager automatically selects a clock frequency for each device or bus, or for a plurality of devices or buses, in a system, based on various factors and objectives. These factors and objectives can include optimizing performance of the devices without exceeding the system's power/thermal budget. The frequency manager can then control circuits that generate and provide clock signals having the selected frequency(ies) to these devices or buses. For example, in a system that is less than fully populated with devices, embodiments of the invention can select higher clock frequencies than a fully populated system would utilize. Some embodiments of the invention select higher clock frequencies for high-bandwidth devices than for low-bandwidth devices. Other embodiments use information about application programs that will be executed by systems, such as which devices these application programs will frequently access, to select higher clock frequencies for the frequently accessed devices. Yet other embodiments use information about whether the application programs are more memory or I/O intensive to allocate higher clock frequencies to either memory subsystems or I/O subsystems.

The invention provides a frequency management method and device for a multicore CPU (Central Processing Unit). The method comprises the following steps: periodically acquiring a frequency change set of frequencies according to which the multicore CPU in a terminal is adjusted dynamically under a specified running scene; and performing statistics on the frequencies in the frequency change set according to a preset calculation model, and acquiring a best frequency adjustment range of the multicore CPU under the specified running scene according to a statistical result. Through adoption of the frequency management method and device, the problem of incapability of finding an appropriate adjustment frequency by automatic frequency adjustment when an interactive frequency adjustment method is adopted for the frequency adjustment of the multicore CPU inside the terminal in the prior art is solved, and the effect of lowering the power consumption of the multicore CPU in the terminal is achieved.