30 results about "Absolute radio-frequency channel number" patented technology

The invention discloses a self-adaptive predistortion method and device and a frequency hopping signal emitter. The self-adaptive predistortion method comprises the following steps of: receiving a synchronization frame number and generating a frame signal according to the synchronization frame number; calculating to obtain a radio frequency channel number ARFCN (Absolute Radio Frequency Channel Number) and a DPD (Digital Predistortion) coefficient according to the frame signal, a user frequency hopping sequence, a signal distribution class instruction and a frame category, and writing the radio frequency channel number ARFCN into an LUT (Look Up Table) coefficient circular list; carrying out comparison computation according to the forward power of a signal subjected to delay processing and digital up-conversion and the feedback power of a predistorted signal, and carrying out error processing on the DPD coefficient according to the comparison computation result and then writing the DPD coefficient subjected to error processing into the LUT coefficient circular list; and predistorting the signal subjected to digital up-conversion according to the DPD coefficient read from the LUT coefficient circular list. The self-adaptive predistortion method and device solve the contradiction between long DPD computation time and rapid frequency hopping time, can self-adaptively switch the DPD coefficient and ensures the DPD compensation performance.

A terminal and method are provided. The terminal includes an Absolute Radio Frequency Channel Number (ARFCN) table including at least one ARFCN information, and a controller for controlling a frequency scanning based on the ARFCN table to detect one or more ARFCNs from the ARFCN table and for controlling a camping on at least one of the detected one or more ARFCNs, such that the camping can be performed based on International Mobile Subscriber Identity (IMSI) information. The camping can be attempted without a scanning procedure for finding an available cell to reduce an amount of time for camping.

The invention provides a device and a method for performing interference detection on a global system for mobile communications for railways (GSM-R). The device comprises a Um monitoring unit and an interference judgment unit, wherein the Um monitoring unit is used for receiving, synchronizing and demodulating wireless signals of a GSM network or a GSM-R network from a Um interface, extracting messages and service data carried by the wireless signals, demodulating any absolute radio frequency channel numbered frequency channel in all frequency bands, acquiring original bit information on all of the eight time slots, and analyzing the original bit information on all of the eight time slots into a layer 3 signaling or the service data; and the interference judgment unit is used for analyzing currently occupied frequency points in or near an area to be detected according to the layer 3 signaling output from the Um monitoring unit, and judging whether the GSM-R network is interfered by comparing the currently occupied frequency points with the GSM-R network frequency points in the area to be detected. By the device and the method, interference detection of the GSM-R network can be performed conveniently and quickly.

A method for providing cell selection in time division synchronous code division multiple access (TD-SCDMA) systems is provided. The method includes generating, by a user equipment (UE), an ordered list of universal absolute radio frequency channel numbers (UARFCNs) based on received signal strength indicator (RSSI) measurements associated with one or more UARFCNs, calculating synchronization downlink (SyncDL) correlation energies associated with the UARFCNS, arranging the one or more UARFCNs based on the RSSI and the associated SyncDL correlation energies, scanning the one or more UARFCNs to detect if one or more serving cells are available to be camped on and selecting a serving cell based on a signal to noise ratio (SNR) threshold associated with the UARFCN.

Embodiments of the present invention include devices, systems and methods for prevention of dropped calls. For example, a method for wireless communication is described. A wireless communication device begins an acquisition. A scan of absolute radio frequency channel numbers for supported bands is performed using a wideband receiver. The absolute radio frequency channel numbers that include a frequency correction channel are identified. A synchronization channel is decoded using data corresponding to the identified one or more frequency correction channels. Other aspects, embodiments, and features are also claimed and described.

A base station (BS) for handling a radio resource control (RRC) connection comprises at least one storage device and at least one processing circuit coupled to the at least one storage device, wherein the at least one storage device stores instructions, and the at least one processing circuit is configured to execute the instructions of: transmitting a first RRC message to a first communication device, wherein the first RRC message configures the first communication device to enter an IDLE state or an INACTIVE state and comprises a first Absolute Radio Frequency Channel Number (ARFCN) indicating a location of at least one synchronization signal block (SSB) at a first carrier, and the first RRC message indicates a subcarrier spacing.

A method for providing cell selection in time division synchronous code division multiple access systems is provided. The method includes generating, by a user equipment (UE), an ordered list of universal absolute radio frequency channel numbers (UARFCNs) based on received signal strength indicator (RSSI) measurements associated with one or more UARFCNs, calculating synchronization downlink (SyncDL) correlation energies associated with the UARFCNS, arranging the one or more UARFCNs based on the RSSI and the associated SyncDL correlation energies, scanning the one or more UARFCNs to detect if one or more serving cells are available to be camped on and selecting a serving cell based on a signal to noise ratio (SNR) threshold associated with the UARFCN.

Embodiments of the present invention include devices, systems and methods for preventing dropped calls. For example, methods for wireless communication are described. The wireless communication device begins to capture. Using a wideband receiver, a scan is performed for the absolute radio frequency channel numbers of the supported frequency bands. Identify the absolute radio frequency channel number that includes the frequency correction channel. The synchronization channel is decoded using data corresponding to the identified one or more frequency correction channels. Furthermore, other aspects, embodiments and features are claimed and described.

The invention discloses a self-adaptive predistortion method and device and a frequency hopping signal emitter. The self-adaptive predistortion method comprises the following steps of: receiving a synchronization frame number and generating a frame signal according to the synchronization frame number; calculating to obtain a radio frequency channel number ARFCN (Absolute Radio Frequency Channel Number) and a DPD (Digital Predistortion) coefficient according to the frame signal, a user frequency hopping sequence, a signal distribution class instruction and a frame category, and writing the radio frequency channel number ARFCN into an LUT (Look Up Table) coefficient circular list; carrying out comparison computation according to the forward power of a signal subjected to delay processing and digital up-conversion and the feedback power of a predistorted signal, and carrying out error processing on the DPD coefficient according to the comparison computation result and then writing the DPD coefficient subjected to error processing into the LUT coefficient circular list; and predistorting the signal subjected to digital up-conversion according to the DPD coefficient read from the LUT coefficient circular list. The self-adaptive predistortion method and device solve the contradiction between long DPD computation time and rapid frequency hopping time, can self-adaptively switch the DPD coefficient and ensures the DPD compensation performance.

The present invention discloses a Physical Cell ID (PCI) allocation method and a base station. The PCI allocation method includes the following steps: a target base station obtains a usable PCI list sent by an Operations And Maintenance (OAM) function entity, and removes limited PCIs of the target cell from the usable PCI list to obtain a selectable PCI set (step S102); the target base station obtains the E-UTRA Absolute Radio Frequency Channel Number (EARFCN) information of neighbour cells of serving cells via an X2 interface message, and obtains a first reference PCI set in a predefined manner, cell EARFCN information in the first reference PCI set is different from that of the target cell of the target base station (step S014); the target base station forms a second reference PCI set based on the intersection of the usable PCI list and the first reference PCI set (step S106); if the selectable PCI set is empty, then a PCI is randomly selected from the second reference PCI set as the target PCI (step S108). The success rate of the PCI allocation for the target cell is improved by the present invention.

A terminal and method are provided. The terminal includes an Absolute Radio Frequency Channel Number (ARFCN) table including at least one ARFCN information, and a controller for controlling a frequency scanning based on the ARFCN table to detect one or more ARFCNs from the ARFCN table and for controlling a camping on at least one of the detected one or more ARFCNs, such that the camping can be performed based on International Mobile Subscriber Identity (IMSI) information. The camping can be attempted without a scanning procedure for finding an available cell to reduce an amount of time for camping.

The invention discloses an access attempt method of a terminal. The access attempt method comprises the following steps: acquiring a frequency band range supported by the terminal; acquiring an E-UTRA absolute radio frequency channel number (EARFCN) of a cell; converting the EARFCN of the cell into actual frequency information when the EARFCN of the cell is not matched with the EARFCN supported by the terminal; and determining that the terminal can perform a subsequent access operation when the actual frequency information falls into the frequency band range supported by the terminal. The invention also discloses a terminal and an access attempt device thereof at the same time.

A wireless communication device comprises a frequency generation circuit employing a crystal oscillator operably coupled to a fractional-based synthesiser and a voltage-controlled oscillator. The fractional-based synthesiser utilises a ratio between an integer value and a fractional value to set a radio frequency signal of the voltage-controlled oscillator. An automatic frequency control scaling sub-system is operably coupled to a fractional-based synthesiser and configured to receive and use an AFC word to frequency scale the fractional value in a multiplicative manner to set a radio frequency supported by the fractional-based synthesiser. Preferably, an automatic frequency generation sub-system utilises Absolute Radio Frequency Channel Number and the cyclical nature of the fractional value.In this manner, a saving on hardware and software overheads associated with frequency channel selection for fractional-N type synthesizers can be made.

The invention relates to voice processing, and particularly discloses a noise suppression method and equipment. In the invention, a noise suppression factor is calculated according to a formula, n refers to frame number, k refers to absolute radio frequency channel number, Gn[k] refers to the noise suppression factor of the kth frequency point in the nth frame, (gamma)n[k] refers to the posterior signal-to-noise ratio of the kth frequency point in the nth frame, (xi)n[k] refers to the priori signal-to-noise ratio of the kth frequency point in the nth frame, and lambda refers to an exponential factor. No musical tone exists in the processed residual noise, and the calculation complexity is greatly reduced, so that the noise is simply and efficiently suppressed.

The invention relates to a method for establishing and applying a neighboring cell of a small cell and belongs to the mobile communication field. The method comprises the following steps: initially electrifying the small cell; after the small cell is electrified, firstly searching a nearby macro eNB, acquiring a synchronizing signal of the macro eNB, and synchronizing the small cell to the macro eNB; searching nearby small cell deployment condition according to self capability by the small cell, searching all the nearby small cells and macro eNBs, and arranging according to signal strength to form a neighboring cell list, wherein information of the neighboring cell list includes a cell frequency point ARFCN (absolute radio frequency channel number) and a cell identity; and after normal initial starting up of the small cell is completed, adding the searched neighboring cell list into a system message, and according to a message broadcasting process, periodically broadcasting the neighboring cell list of the small cell. The method provided by the invention is applicable to configuration of the neighboring cell list in a current highly dense small cell scene, better user experience is provided, a mobile terminal is prevented from starting a blind search process, and power consumption of a mobile terminal is reduced.

The invention relates to the field of mobile communication, in particular to a technology for determining the center frequency point of a carrier in a wireless communication system. In a method for determining the center frequency point of the carrier, the center frequency point of the carrier for communication between the base station and the UE is determined according to the starting frequency point of the frequency band, the absolute radio frequency channel number, the frequency band offset and the relative radio frequency channel number. Through the solution provided by this application, the time for the terminal to search for a cell can be reduced, the power consumption of the terminal can be reduced, and the battery life can be prolonged.

The invention discloses a method for fast detection scan of NB-IoT signals in networks.The object of the invention to provide a scanning procedure which is reliable and very fast in order to reduce the search time and hence the power consumption will be solved by a method for fast detection scan of NB-IoT signals in a network by applying a higher sampling rate than 240 kHz and observing a receivedsignal at a receive bandwidth around a magnitude wider than the NB-IoT signal bandwidth of 180 kHz, wherein a set of 2M+1 NB-IoT signals each having a different E-UTRA absolute radio frequency channel number (EARFCN) can be observed simultaneously, whereas M is a natural number and 2M+1 indicates the number of concurrently observed channels.

The invention discloses a method for obtaining a neighbor cell list, which is applied to the optimization system of 3G network and includes the following steps: (1) the multi-frame synchronization of the system is completed and a system frame number (SFN) is obtained; (2) the complete main information block (MIB) is extracted; (3) the MIB is analyzed; the dispatch information fixed in the MIB is traversed; two dispatch blocks SB1 and SB2 which are completely searched out according to the MIB are checked to see whether one of the dispatch blocks contain system information block (SIB) 11, if not, the check is over and if the SIB exists, the check continues; (4) the SIB 11 is extracted completely; (5) the SIB 11 is analyzed; the absolute radio frequency channel number (ARFCN) and interruption number of all the neighbor cells are obtained according to the same / different frequency measurement control information of the base-station broadcast in the analyzed SIB 11, thus obtaining the neighbor cell list camped in the cell. By adopting the method of the invention, all of the neighbor cell lists camped in the cell can be accurately obtained.

Embodiments of the present invention provide a measurement method for a wireless communication network, a base station, and a terminal, which relate to the communication field. The method includes: sending measurement configuration information to the terminal; wherein, the measurement configuration information includes: carrying types used to distinguish measurement objects The measurement object configuration information indicated by the distinction; receiving the measurement result sent by the terminal after measuring the determined measurement object, the determined measurement object is determined by the terminal according to the distinction indication; the type of the measurement object includes: LAA frequency The LAA cell at the LTE frequency point, the LTE cell at the LTE frequency point, or the MF cell at the MF frequency point; the indication of the distinction is an absolute radio frequency channel number. The solution of the present invention enables the terminal to distinguish the type of measurement object, such as LAA and MF measurement objects, and enables the terminal to measure the channel quality of the frequency points of the entire or part of the MF frequency band, thereby supporting the handover of the terminal from the LTE network to the MF network .

A base station (BS) for handling a radio resource control (RRC) connection comprises at least one storage device and at least one processing circuit coupled to the at least one storage device, wherein the at least one storage device stores instructions, and the at least one processing circuit is configured to execute the instructions of: transmitting a first RRC message to a first communication device, wherein the first RRC message configures the first communication device to enter an IDLE state or an INACTIVE state and comprises a first Absolute Radio Frequency Channel Number (ARFCN) indicating a location of at least one synchronization signal block (SSB) at a first carrier, and the first RRC message indicates a subcarrier spacing.