Abstract: A radio receiver receives a broadcast signal and generates an RF signal, generates an IF signal from the RF signal, detects the electric field intensity and the frequency of the IF signal, detects the IF signal and generates a detected signal, detects the intensity of a noise signal that is a harmonic component of a digital signal that exists in a certain specific frequency band from among the detected signals, determines that the broadcast signal includes a desired analog broadcast signal when the electric field intensity of the IF signal is equal to or larger than a predetermined electric field intensity, the frequency is within a predetermined frequency range, and also the signal intensity detected by the noise signal detection unit is equal to or smaller than a predetermined value, and then performs a control to stop a search.

Abstract: Techniques to search for signals while in an out-of-service state are described. In an aspect, a network entity may collect information for wireless devices within a designated area, determine at least one search parameter (e.g., a scan rate) based on the collected information, and provide the search parameter(s) to wireless devices within the designated area. The wireless devices may perform searches for signals in accordance with the search parameter(s) when they are out of service. In another aspect, a wireless device may collect information related to out-of-service events encountered by the wireless device, send the collected information to the network entity, receive the search parameter(s) from the network entity, and perform searches in accordance with the search parameter(s) when out of service. In yet another aspect, the wireless device may determine the search parameter(s) based on the collected information.

Abstract: Device, system, and method of power saving in wireless network. For example, a method includes: receiving from a wireless access point a wireless communication signal indicting wireless network load information represented as a value of a parameter in a Basic Service Set load information element, wherein the parameter comprises a parameter selected from a group consisting of: a station count parameter, a channel utilization ratio parameter, an available admission control parameter, a network congestion parameter, a transmission power suggestion parameter, a reception power suggestion parameter, and a late adaptation suggestion parameter; and modifying a power consumption mode of a communication unit of a wireless communication device based on said parameter.

Abstract: When measurement results of received radio wave intensities of wireless base stations, which demands a soft handoff, are received from a wireless terminal in a wireless communication system and when a base station controller attempts to acquire a traffic channel in a wireless base station, via which a wireless communication path will be added, in the state in which the channel resource usage rate of that wireless base station is over a threshold, a traffic channel may be acquired only if the ratio between the radio wave intensity of the wireless base stations establishing communication paths and the radio wave intensity of the wireless base station via which a communication path will be added is higher than a threshold or if the difference between the radio wave intensity of the wireless base stations and the radio wave intensity of the wireless base station smaller than a threshold.

Abstract: In one embodiment, the present invention includes a method for receiving an incoming radio frequency (RF) signal in a receiver, estimating a signal-to-noise ratio (SNR) of a constant modulus (CM) signal in the incoming RF signal based on a calculated magnitude of the incoming RF signal, and indicating presence of a modulated signal in the incoming RF signal if the estimated SNR is greater than a threshold.

Abstract: A wake-up method for a multi-channel receiver comprises the following steps: checking for activity on every available channel by switching from one channel to the next thereby activating and subsequently deactivating one channel after the other; when activity is detected at least on one of the available channels, switching on all channels, measuring a respective received signal strength in every channel and performing a comparison of received signal strengths between all channels; and selecting the channel with the highest received signal strength. Further a multi-channel wake-up receiver is presented.

Abstract: A method for controlling a handoff in an optical distributed network system using MIMO (multi input multi output) is disclosed. The method includes steps of classifying a channel into a first channel and a second channel, and setting an active cell, receiving and measuring a signal strength of a predetermined cell, and determining on/off of the predetermined cell, when the predetermined cell turns on, releasing the first channel of the active cell, switching a path to a first channel of the predetermined cell, and keeping the second channel of the active cell, receiving and measuring a signal strength of the active cell, and when the measured signal strength is a preset critical value or less, turning off the active cell and when the active cell turns off, releasing the second channel of the active cell, and switching the path to a second channel of the predetermined cell.

Abstract: Method and system for false lock free autonomous scan in a receiver is disclosed. The method includes identifying a presence of a desired signal to avoid false frequency lock in a Frequency Modulation receiver. The method includes receiving a signal. The method further includes identifying the desired signal, if a first energy is above a first threshold. The method also includes identifying the desired signal, if an Intermediate Frequency count is below a second threshold. The method includes identifying the desired signal, if a second energy of the signal is above a third threshold. The method includes identifying the desired signal, if an absolute difference between a first Received Signal Strength Indication (RSSI) value and a second RSSI value of the signal is below a fourth threshold. The method includes determining a third energy. The method includes identifying the desired signal, if the third energy is below a fifth threshold.

Abstract: A mobile device for setting a signal strength value for the mobile device to receive needed radio signals. The mobile device includes a signal strength value configuring system and a radio signal receiving unit. The signal strength value configuring system is operable to set the signal strength value for the mobile device to receive needed radio signals, utilizing a number of radio station channels detected by the radio signal receiving unit of the mobile device.

Abstract: A method of configuring a tuner includes scanning at least one range of radio frequencies, measuring a signal quality metric for each of a plurality of the frequencies, and selecting a set of operational frequencies for the tuner. The selecting step is dependent upon the measuring step.

Abstract: Methods of operating a mobile television receiver. The methods comprise the steps of gathering data concerning parameters of an input signal, determining whether the signal is at a level, and performing additional functions if it is determined that the signal is at the level. Determining the signal level includes determining one of signal-to-noise ratio, bit error rate, signal strength and uncorrected packet count. Performing additional functions comprises scanning a frequency space of the signal.

Abstract: A method of signal transmission according to one embodiment includes requesting a packet data serving node to filter a specified traffic flow from among a stream of packets. The method also includes requesting a radio access network to provide an indicated quality-of-service (QoS) treatment for the flow over a wireless air interface. The method further includes rescinding the request to filter or the request to provide a QoS treatment in response to a failure of the other request.

Abstract: A wireless terminal using switchable first and second reception antennas to perform diversity reception of data transmitted from a base station is proposed. The terminal includes an average value calculation unit that calculates an average value of a reception level measurement result of the first reception antenna and a reception level measurement result of the second reception antenna; and a correction unit that corrects the average value calculated on the basis of a predetermined thermal noise level, a received RSSI value measurement result of the first reception antenna, and a received RSSI value measurement result of the second reception antenna.

Abstract: The invention discloses a method for determining a region where a broadcasting receiver is located by detecting the signal strength of a plurality of channels. When a user takes the broadcasting receiver from region A to region B, the broadcasting receiver provides a list of regions including region B when the broadcasting receiver is turned on. When the user chooses to change the current region to region B, and after the channel scan is performed, the user can effortlessly view the broadcast programs of region B.

Abstract: Method and apparatus for providing link quality feedback to a transmitter. In one embodiment, a periodic link quality message is transmitted on a gated channel, while continuous differential indicators are transmitted. Between quality messages, the differential indicators track the quality of the link. In one embodiment, a parity check is provided with the quality message. In another embodiment, the frequency of transmission for the quality messages is determined by the channel quality. When the receiver anticipates reception of a transmission, the quality messages are generated; else the quality messages are halted.

Abstract: Methods and systems are provided for providing machine health information. In one embodiment, a machine may include a storage device that is configured to store collected machine health data. The storage device has a module that is configured to determine a data characteristic and a communication characteristic. The storage device is further configured to determine, based on the data characteristic and the communication characteristic, whether to transmit a set of machine health data to an off-board system. Further, the storage device is coupled to a transmitter that is configured to transmit the set of machine health data to the off-board system.

Abstract: Techniques for locating wireless channels usable for transmitting media signals from personal media players that are adequately separated from wireless channels used for other purposes. One technique involves identifying a target channel and at least two additional channels within a certain proximity of the target channel, and evaluating a channel usability algorithm based on characteristics, such as the received signal strengths, of the target channel and the received signal strengths of each of the proximate channels. Based on evaluation of the algorithm, the target channel is deemed either usable or not usable to transmit the media signal. The most desirable available target channel(s) in a particular group or sub-group of wireless channels may also be identified.

Abstract: A method and system for providing a network protocol for utility services are disclosed are disclosed. In one embodiment, a computer-implemented method determines whether a measured real signal strength differs from a an accepted real signal strength by a configurable control limit parameter. In the event the measured real signal strength exceeds either an upper or lower bound based upon the configurable control limit parameter a determination is made whether there has been an unacceptable number of measured real signal strengths that exceed either an upper or lower bound based upon the configurable control limit parameter. In the event there has been an unacceptable number of measured real signal strengths that exceed either an upper or lower bound, which may include reaching or exceeding a configurable out of bound incidence limit, then a determination is made to calculate a new accepted real signal strength.

Abstract: Methods and systems for determining transmission channels for short range transmissions are disclosed. A transmitter provides short range transmission to a broadcast receiver configured to receive and tune channels within a signal spectrum. Channels within the broadcast signal spectrum are scanned, and an indication of received signal strength is obtained for each channel. The received signal strength indication (RSSI) can then be compared to a threshold power level that correlates to a signal level that the transmitter will be capable of overpowering based upon the transmission power of the transmitter. The scan results in an indication of one or more channels that have received signal strengths below the threshold power level of the transmitter.

Abstract: A method for inferring location of a mobile device is provided. A radio frequency fingerprint is taken for a mobile device, wherein the radio frequency fingerprint includes cell tower data and cell sector data that includes a cell sector through which the mobile device is not communicating. Whether the radio frequency fingerprint matches a previous radio frequency fingerprint associated with a location fix is determined. A location fix technology is executed for the mobile device in response to a determination that the radio frequency fingerprint does not match the previous radio frequency fingerprint.

Abstract: Systems and methods for dynamically controlling a tuner are provided. In exemplary embodiments, the tuner receives control signals generated by digital signal processing hardware (DSPHW). These control signals control noise figure and linearity characteristic of components within the tuner by adjusting a current supply to those components, according to a desired configuration determined by the DSPHW. As a result, the DSPHW can optimize power consumption of the tuner while allowing for sufficient tuner performance for reliable demodulation of received signals.

Abstract: Method and system for false lock free autonomous scan in a receiver is disclosed. The method includes identifying a presence of a desired signal to avoid false frequency lock in a Frequency Modulation receiver. The method includes receiving a signal. The method further includes identifying the desired signal, if a first energy is above a first threshold. The method also includes identifying the desired signal, if an Intermediate Frequency count is below a second threshold. The method includes identifying the desired signal, if a second energy of the signal is above a third threshold. The method includes identifying the desired signal, if an absolute difference between a first Received Signal Strength Indication (RSSI) value and a second RSSI value of the signal is below a fourth threshold. The method includes determining a third energy. The method includes identifying the desired signal, if the third energy is below a fifth threshold.

Abstract: The method according to the invention for adjusting the tuning of a receiver circuit for receiving modulated a high frequency signal within a frequency range, the high frequency signal comprising a sync signal, uses the steps of shifting a frequency of a local oscillator within the frequency range and looking for the sync signal, and storing the value of a first frequency, when a sync signal is recognized. Then, the frequency of the local oscillator is continuously shifted in the same frequency direction across the bandwidth of the modulated high frequency signal by controlling the presence of the sync signal. The frequency, at which the sync signal is lost, is stored as a second frequency. From the first and the second frequency in a further step an optimum tuning frequency, located between the first and second frequency, is calculated for the reception for the high frequency signal.

Abstract: A method for receiving a station signal is provided. First, a radio frequency signal is received and converted to a first IF signal. Next, the first IF signal is demodulated to a baseband signal and a demodulation signal is obtained, the demodulation signal being a result of differentiating a phase of the baseband signal. Then a determination as to whether a DC level of the demodulation signal has an S-curve characteristic at a specific frequency is made according to the demodulation signal. If so, the specific frequency is determined as a first station frequency, a first station signal is obtained from the radio frequency signal according to the first station frequency.

Abstract: A signal analysis mechanism for processing and classifying an RF signal received at a WLAN device. A plurality of spectral data captures comprising time-frequency data and receive signal strength indicator (RSSI) data associated with the RF signal received at the WLAN device are generated. The time-frequency and RSSI data of each of the plurality of spectral data captures is processed to determine whether each spectral data capture is a narrowband signal capture. If the plurality of spectral data captures are narrowband signal captures, a narrowband interference signal type associated with the received RF signal is determined based, at least in part, on a plurality of parameters associated with the narrowband signal captures.

Abstract: A system and methods (300, 400) are disclosed for conserving energy in a multimode communication device (106). A system that incorporates teachings of the present disclosure may include, for example, a communication device having a multimode wireless transceiver (202) for accessing a plurality of wireless access technologies (103), and a controller (214) for managing operations of the multimode wireless transceiver. The controller is programmed to enable (300) scanning for a select one of the wireless access technologies when the communication device is near a known location of a wireless access point. An embodiment for a network management system (100) is also disclosed.

Abstract: A system for detecting a broadcast channel in a radio receiver includes a receive signal strength indicator (RSSI) element configured to develop an RSSI signal that is representative of a power in a desired channel, a switchable bandwidth channel select filter having a power detector configured to compare a power output of the desired channel and at least one channel adjacent to the desired channel to develop a signal to adjacent channel power ratio (SACPR) signal that is representative of the noise in the desired channel, and a seek element configured to determine whether the RSSI signal is greater than a predetermined RSSI threshold and configured to determine whether the SACPR signal is greater than a predetermined SACPR threshold.

Abstract: A high-speed receiver includes multiple receiver components. Each receiver component includes sampling latches for receiving data, phase rotators for controlling timing of sampling of data by the sampling latches, and a clock-tracking logic stage for providing clock and data recovery. The clock-tracking logic stage is divided into a high-speed early/late (E/L) logic and aggregation counter section and a low-speed logic section, separated by a synchronization logic block. The receiver also includes a delay locked loop (DLL) for receiving an input clock signal corresponding to a data rate of the received data, providing coarse delay adjustment of the clock signal and outputting multiple clock phase vectors corresponding to the adjusted clock signal to the phase rotators on each receiver component. The phase rotators control sampling of the data based on the clock phase vectors received from the DLL. A single regulated power supply regulator regulates power supplied to the DLL and the phase rotators.

Abstract: A method and apparatus are provided for allowing a field device to select a data communication provider among a plurality of available data communication providers. Preferably, the method includes periodically, or selectively, assessing the strengths and efficacy of data communication on one or more alternate data communication providers. The data communication provider with the strongest signal and/or most effective data communication is selected for use by the field device. Preferably, the field device logs events where it switches among data communication providers.

Abstract: A method and system for processing channels in a FM communication system are provided. The FM communication system using the method or program may include adjusting a tuning frequency of a FM receiver for scanning and detecting an FM channel based on one or more of knowledge of location of said FM receiver, received signal strength indicator (RSSI), and/or carrier error of a related FM signal. Frequency offsets and channel spacing of the detected FM channels may be derived based on a self measurement routine. The aforementioned information may be preprogrammed, updated from a previous scan, or from external inputs to configure the receiver for subsequent selective tuning.

Abstract: A voltage standing wave ratio (VSWR) measurement device for orthogonal frequency division multiplexing (OFDM) signal, in particular code division multiple access (CDMA) signals, comprising a radio frequency switch, a unit for converting the signal from the radio frequency (RF) switch into the digital base band, means for extracting a pilot signal out of a multitude of OFDM/CDMA signals, a timing unit and a code generator associated with said extraction means and a controller.

Abstract: In a method of auto-tuning a radio FM-receiver the receiver frequency band is scanned until a FM signal is received meeting criteria for identifying the signal as being of a predetermined quality, particularly coming from a valid FM station. At least during tuning it is permanently established whether or nor the FM signal meets the criteria, whereafter the results thereof are read a predetermined number of times, and the FM signal is only stored if at least most of these times the criteria are met. Particularly, the results are read 10 times and the FM signal is only stored if at least 8 times thereof the criteria are met.

Abstract: The invention relates to a method for automatically finding an AM radio program, by which an AM radio receiver is tuned through in discrete steps, such that, for each set AM frequency, the reception quality at the currently set AM frequency is determined, the field strength of the neighboring frequencies is measured. If a significant field strength is detected at the neighboring frequencies, these are taken into account in determining the overall reception quality, in that the reception quality is reduced by a noise value, and subsequently the overall reception quality is compared with an upper quality limit. If the upper quality limit is exceeded, the program search is interrupted, and the AM radio program with this high overall reception quality is played. This method succeeds in reducing the number of misjudgments of AM radio programs with actually poor quality, and thus improves the reproduction quality of an AM radio receiver.

Abstract: An FM receiver including an FM antenna that receives continuous wavelength signals, where the FM receiver is coupled to the FM antenna and operable to alter a center frequency of a gain profile of the FM antenna. The FM receiver includes a low noise amplifier module that is coupled to amplify the continuous wavelength signal to produce an amplified RF signal therefrom. A down conversion module is coupled to mix the amplified RF signal with a local oscillation to produce an information signal. A filter module is coupled to filter the information signal to produce a filtered information signal. A demodulation module is coupled to capture audio information from the filtered information signal. A signal monitoring module is coupled to monitor the FM signal quality of a received continuous wavelength signal. The signal monitoring module produces a signal quality indication therefrom.

Abstract: A method and apparatus for medium access control in a receiver is shown, involving frequency hopping through each of a plurality of channel frequencies for the receiver, monitoring a baseband section of the receiver using a data quality detector (DQD) circuit configured to assert a DQD signal when valid data is sensed at the output of a demodulator of the receiver, waiting a first preset period of time after changing the channel frequency for each frequency hop and monitoring whether the DQD signal is asserted, resuming frequency hopping if the DQD signal is not asserted within the first preset period of time, and maintaining a current channel frequency in order to receive a data packet if the DQD is asserted.

Abstract: An ultra-wideband clear channel assessment system uses a double-window energy technique for energy detection, which indicates a clear or busy channel.

Abstract: A broadcast receiver includes a tuner circuit and a demodulator circuit. The tuner circuit tunes a radio frequency (RF) signal to output an intermediate frequency (IF) signal. The demodulator circuit demodulates the IF signal from the tuner circuit and outputs a command signal based on the quality of the IF signal, for changing a take over point (TOP) value, preset in the tuner circuit, at which one amplitude gain control (AGC) stopping and another taking over. A method for regulating a broadcast receiver is also disclosed herein.

Abstract: A radio modulator and method with a radio band scan function. The apparatus consists of a frequency selectable RF signal transmitter, a switch that couples the RF signal to an antenna, and a demodulator coupled to mix a received antenna signal with the RF signal to produce an indicia of signal strength at the receive frequency resulting from that mix. A channel memory is coupled to store plural indicia of signal strength values corresponding to plural receive frequencies. A controller is coupled to the transmitter, the switch, the channel memory, and a display. In operation, the controller enables the frequency scan function by decoupling the switch, tuning the transmitter RF signal to plural frequencies, which causes the demodulator to receive plural receive frequencies within the radio band.

Abstract: A radio broadcast receiver includes: a frequency conversion circuit for receiving a radio broadcast wave and for outputting a reception signal; a detection circuit for detecting the reception signal of an analog radio broadcast wave and for outputting a detection signal; an automatic tuning device for searching a broadcast frequency; and a noise amplifier for amplifying a noise component in the detection signal and for outputting a noise detection signal. The automatic tuning device selects the broadcast frequency when the reception signal level is equal to or larger than a predetermined electric field intensity threshold value and a noise detection signal level is equal to or smaller than a predetermined noise determination threshold value.

Abstract: Embodiments relate to a mobile device comprising: a processor; a display responsive to the processor; a plurality of wireless communication subsystems responsive to the processor; and a memory. The memory is accessible to the processor and stores program code executable by the processor for executing a user interface application. The user interface application is configured to determine a first connection status of the mobile device with respect to a cellular network and a second connection status with respect to a wireless local area network (WLAN). The user interface application, when executed by the processor, is further configured to cause the display to display a selected combination of icons in three display fields in a banner area of the display. The combination of icons is selected from a plurality of icon combinations based on the determined first connection status and the second connection status.

Abstract: In one embodiment, the present invention includes a method for receiving data corresponding to a portion of an incoming radio frequency (RF) spectrum, determining a set of estimates including one or more pairs of a channel frequency estimate and a symbol rate estimate from the data via a linear spectrum analysis, and determining a refined set of estimates from the set of estimates via at least one non-linear spectrum analysis.

Abstract: In a method for searching for signals among interference signals in a multi-channel radio receiver, at least two different data signals are transmitted on at least one physical channel of a radio system to a common receiver. The search for a signal is initiated on any channel, starting with a sequential search of a useful signal by measuring the current signal strength in the form of the RSSI value; a search is made for a signal criterion of the signal and when said criterion has been identified, the measured RSSI value is compared with a predefined RSSI threshold value; if the RSSI threshold value is exceeded, the search for a signal is switched to a search for a data frame and if a data frame is found, the useful data is read; if no signal criterion is identified, if the RSSI threshold value is not exceeded and if no data frame is found, the procedure is interrupted and a new search operation is initiated once a new RSSI threshold value has been defined.

Abstract: A system and methods (300, 400) are disclosed for conserving energy in a multimode communication device (106). A system that incorporates teachings of the present disclosure may include, for example, a communication device having a multimode wireless transceiver (202) for accessing a plurality of wireless access technologies (103), and a controller (214) for managing operations of the multimode wireless transceiver. The controller is programmed to enable (300) scanning for a select one of the wireless access technologies when the communication device is near a known location of a wireless access point. An embodiment for a network management system (100) is also disclosed.

Abstract: An adjustable RF audio receiver and method are provided. The adjustable RF audio receiver includes an RF antenna configured to receive RF audio signals, and a tuner coupled to the RF antenna and configured to decode received RF audio signals. The adjustable RF audio receiver further includes signal processing circuitry coupled to the tuner and configured to determine signal quality characteristics of the signals received by the adjustable RF audio receiver. The signal processing circuitry provides determined signal quality characteristics and identifies an environment in which the RF audio receiver is operating. The signal processing circuitry is configured to adapt how received signals are processed based on the determined environment.

Abstract: A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (fc) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (fc), using a bit tracking loop (BTL) lock indicator.

Abstract: A transceiver system includes a first section coupled to a first antenna, a second section coupled to a second antenna, and a radio frequency (RF) unit. The first section includes a transmit path and a first receive path for a first (e.g., GSM) wireless system, a transmit path and a first receive path for a second (e.g., CDMA) wireless system, and a transmit/receive (T/R) switch that couples the signal paths to the first antenna. The second section includes a second receive path for the first wireless system and a second receive path for the second wireless system. The first and second receive paths for the first wireless system are for two frequency bands. The first and second receive paths for the second wireless system are for a single frequency band and provide receive diversity. The transceiver system may include a GPS receive path coupled to a third antenna.

Abstract: A scan system receives signals within a band from an antenna and divides the band into sub-bands and scans the channels of each sub-band to determine a candidate channel based on the lowest figure of merit (FOM) and includes an on-channel selection block responsive to a received digital signal and operative to select only the on-channel frequencies and to substantially disregard the out-of-channel frequencies from the digital signal. The scan system generates a FOM on-channel signal representing a measurement of the signal quality of the on-channel signal and includes an out-of-channel selection block responsive to the digital signal and operative to select only the out-of-channel frequencies and to substantially disregard the on-channel frequencies from the digital signal and operative to generate a FOM out-of-channel signal representing a measurement of the signal quality of the out-of-channel signal.

Abstract: A system and method are provided for measuring the amplitude of a received signal. The method receives an analog input signal, and compares a peak value of the analog input signal to a threshold level. Threshold transition data is generated, and the threshold level is adjusted in response to the transition data. The above-mentioned processes of comparing, generating, and adjusting are reiterated until the threshold level is about equal to the analog input signal peak value. As a result, a measurement of the analog input signal peak value is supplied. In one aspect, threshold transition data is converted into a digital value. Then, the measurement of the analog input signal peak value uses the digital value to represent the analog input signal peak value. Further, the digital value is converted into an analog voltage as feedback, and the analog voltage is used as the threshold level.

Abstract: Mobile, diversity tuned set-top boxes. The mobile set-top boxes described herein comprise a housing, a demodulator having a plurality of tuning circuits, and an antenna having antenna elements. Each antenna element inputs modulated signal to the plurality of tuning circuits in a switched manner, and the antenna elements are reticulatable with the housing to first and second positions.

Abstract: A telecommunications network for mobile terminals, in particular a wireless LAN network, includes a plurality of network access points defining a network coverage area and each one associated with a respective transmission channel; at least one mobile terminal adapted to move inside the coverage area and configured for performing a transmission channels scanning; a terminal locating server, configured for determining a position in which the terminal must perform the scanning, for determining a set of channels adapted to be received in the position with predetermined transmission characteristics, and for communicating such set of channels to the mobile terminal, so that the scanning, for example, for tracking or handover purposes, can be performed on a limited number of channels, thereby increasing the useful time for providing telecommunication services.