467 results about "Virtual cell" patented technology

A method for laying out process dummy cells in relationship to inside memory cells of a memory array includes (a) calculating an initial process performance parameter for the memory array; (b) changing dummy cell layout configuration for a layer electrically connected to inside cells; (c) applying lithographic simulation and yield model for both the inside memory cells and the changed layout configuration process dummy cells; and (d) repeating steps (b) and (c) until yield is maximized. Checks may be performed to ensure that there is enough room to make the change and that there is no significant adverse effect to neighboring circuits. The process performance parameter may be yield or a process window for the inside memory cells.

A communication system for communication with mobile stations through a plurality of base stations at macrodiverse locations and with frequency hopping (FH). Two or more adjacent base stations communicate with mobile stations in a region between the adjacent base stations using coordinated orthogonal frequency hopping sequences. The communication system operates with virtual cells formed of physical sectors from adjacent base stations. Where base stations each operate with three sectors, virtual cells use three adjacent sectors of three adjacent base stations, respectively, and the coordinated orthogonal frequency hopping sequences are used for the adjacent sectors of each of the virtual cells. For GSM, the coordinated orthogonal frequency hopping sequences in each virtual cell are defined by a single hopping sequence number (HSN) and a set of mobile allocation index offsets (MAIOs). Fast macrodiversity switching is employed in combination with FH.

A nonvolatile semiconductor memory device includes a string selection transistor coupled to a bit line. The device also includes a plurality of memory cells coupled in series to the string selection transistor, wherein at least one of the memory cells is configured to be in a programmed state during an erase procedure of the plurality of memory cells.

In a network having multiple wireless transmitters, a mobile device operating with the network may be assigned one or more wireless transmitters as a virtual cell. Transmissions to the mobile device may be broadcast from several cells simultaneously, so that the mobile device will receive the transmissions in any of the areas covered by the cells. When the network determines that the mobile device is moving out of one cell area and into another, the virtual cell may move as well. The virtual cell may consist of one or many areas covered by a wireless network, and may have a shape that is determined by geography, trajectory, wireless coverage, or other factors.

The invention discloses a method and device for demodulating a data reference mark sequence. In the method, when a pilot frequency sequence of a data demodulation pilot frequency DMRS (Demodulation Reference Signal) is generated, the same DMRS sequence generation method is adopted for all cells corresponding to the same cooperative cluster. The method can comprise the steps of: defining virtual cell identification for the same cooperative cluster; and generating the DMRS sequence according to the virtual cell identification among all the cells inside the same cooperative cluster. By means of the invention, the problem that the demodulation of the data reference mark sequence is relatively complicated is solved, and the effect of demodulating the data reference mark sequence simply and conveniently is further achieved.

Provided is a lane departure alarming method with a driving distraction state considered. The method comprises the steps that whether a driver is in a distracted driving state at present is judged according to the traveling track of an automobile and the operation information of the driver; distinguished alarming strategies are provided according to the detecting result of distracted driving, and when driving distraction is not detected, the time for lane departure alarming is delayed. A lane departure alarming system for achieving the method comprises an environment sensing unit, an information control unit, a data processing unit, a distraction detecting unit, a road virtual unit and an alarm decision making unit. The yaw angle of the automobile and the rotating speed signal of a steering wheel are acquired from the environment sensing unit and the information control unit, corresponding standard deviation statistical data can be obtained after data processing, and driving distraction detection is conducted. The alarm decision making unit makes alarm decisions, and judges whether the current alarm signal is restrained or not. The lane departure alarming method and system can provide the distraction driver with timely lane departure alarm, and meanwhile avoid frequent false alarm to the focused driver so that disturbing to the driver can be reduced.

A non-volatile semiconductor memory device includes a memory array having a cell string. The cell string includes a plurality of normal memory cells, a ground selection transistor gated so as to provide a source voltage to the normal memory cells, at least two dummy cells connected between a normal memory cell on one side end of the cell string and the ground selection transistor, wherein the normal memory cells are configured to store data and the dummy cells are configured to not store data. The memory device also includes a word line selection block which controls normal word lines to gate the normal memory cells and dummy word lines to gate the dummy cells, wherein the dummy word lines are controlled as sequential voltage levels during a program operation to select the normal memory cell on the one side end.

The embodiment of the invention discloses an uplink demodulation reference signal configuration method, a network side network element, and an uplink DMRS transmission method and apparatus. The uplink demodulation reference signal configuration method comprises the following steps: the network side configures a time-frequency resource or parameter set necessary for sending an uplink DMRS to a user terminal, and notifies the configured time-frequency resource or parameter set of the user terminal; or the network side and the user terminal pre-define the time-frequency resource or parameter set necessary for sending the uplink DMRS by the user terminal, wherein the time-frequency resource or parameter set comprises a time domain position, a frequency domain position, a virtual cell ID set, a user-specific or resource-specific parameter used for determining an uplink DMRS sequence group serial number, and a user-specific or resource-specific parameter used for determining an uplink DMRS sequence displacement pattern.