156results about "Wireless communication" patented technology

In a portable telephone, a sensor constructed of, for example, a 3-axial acceleration sensor is built in the vicinity of a display unit which is provided on a main body of the portable telephone. When a user moves the display unit along a vertical direction (Z-axis direction) with respect to a display screen thereof while the user holds the appliance main body, the sensor senses both a move direction and a move amount of the display unit, and thus, information displayed on the display screen of the display unit is enlarged, or compressed in display magnification defined in response to the sensed move amount. As a result, a display size of the information displayed on the display screen can be changed in such a manner that the user may have such a natural feeling achieved by moving a magnifying glass.

The invention provides a technical scheme applied in a cellular network of mobile communication, which applies a device-to-device (D2D) technology in the cellular network, and allows D2D user pairs to multiplex resources of cellular network users for communication. The invention provides a method based on base station positioning to select the cellular users for the D2D user pairs for multiplexing resources and selects the cellular user having the farthest distance away from each pair of D2D users to carry out resource multiplexing. In the scheme provided by the invention, the complexity of an algorithm through which a base station end selects the cellular users for resource multiplexing is simplified, and the interference between the D2D user pairs for multiplexing resources and the cellular users is reduced to be lowest, so that the whole frequency spectrum efficiency of the system is improved. In addition, for the method, the practical operability is very strong, the implementation is easy in practice, and the application modes are more flexible.

An RFID interrogator has a receiver/transmitter architecture that accounts for the variation in tolerances of radio system electrical components. The RFID interrogator includes a memory in which is stored desired initial condition data of the receiver/transmitter architecture, and this initial condition data is used upon initialization of the RFID interrogator to define the operational condition of the RFID interrogator. Each individual RFID interrogator may contain unique initial condition data corresponding to the particular component tolerances of that radio system.

The invention discloses a random access response determining method, a device and a system, which are used for enabling user terminals to effectively recognize the format of random access response, improving the compatibility of user terminals in different versions, enabling the user terminals in different versions to accurately analyze and acquire the own RAR (Random Access Response) and improving the random access success rate. The method comprises the following steps: the user terminals determine the types of RARs corresponding to marks carried in a data packet transmission unit MAC PDU message header of a received media access control layer according to the corresponding relation between the preset marks and the RAR types, determine the resolution manner corresponding to the RARs according to the corresponding relation between the preset RAR types and the resolution manner and achieves resolution.

A method is provided for performing a clear channel assessment in a wireless network. The method involves first listening for channel energy on a wireless channel. Whatever channel energy is heard over the wireless channel is demodulated into non-synchronized in-phase and non-synchronized quadrature phase components. Each of the non-synchronized in-phase and non-synchronized quadrature phase components are squared, and then the non-synchronized in-phase component is multiplied by the non-synchronized quadrature phase component to produce an I−Q product. The sum of the squared non-synchronized in-phase component, the inverse of the squared non-synchronized quadrature component, and double the I−Q product is determined as a clear channel assessment input value. A carrier signal detection function is then performed on the clear channel assessment input value to produce a clear channel assessment output value, which is used to determine whether a signal is present in the wireless channel.

A method and system for determining a location of a vehicle, the method comprises determining reception location data within a first cell of a work area for a vehicle. A reception quality estimator estimates reception quality data for the corresponding reception location data for the first cell. Optical location data is determined within a first cell of a work area for a vehicle. An optical quality estimator estimates optical quality data for the corresponding optical location data for the first cell. A data processor selects at least one of the reception location data and the optical location data as refined location data associated with the first cell based on the estimated reception quality data and estimated optical quality data.

The invention discloses a location method of a simulation base station based on an A interface signal, which belongs to the field of mobile communication. The method comprises steps of firstly collecting the A interface signal in a Global System for Mobile Communications (GSM) network, generating a calling detail record (CDR), adding the CDR to a signal database, performing an association analysis to information in the signal database, and obtaining a statistic analysis result; then unscrambling location area codes of the simulation base station in accordance with the statistic analysis result and obtaining lists of normal cells near the simulation base station; and finally locating a geographical position and distribution of the simulation base station according to the lists of normal cells near the simulation base station. According to relative signal data information in updating of positions of mobile communication users, the method evaluates the problems of the simulation base station in the mobile communication effectively in real time, cannot be affected by regions and other factors, enables operators to know mobile communication network conditions in time, and arranges reasonably people to perform network optimization.

The invention discloses a method for recovering a subscriber identity module (SIM) of a mobile phone in case of data transmission error and the mobile phone. When the data transmission error of the SIM of the mobile phone due to interference with an electric signal of the SIM occurs, the entire mobile phone system is not restarted, but the SIM is powered off and re-electrified for restarting and access to the SIM and connection to the network are performed. Compared with a method for restarting a mobile phone system, the method has the advantages that: time is effectively saved, convenience is brought to users, and new SIM restarting function is added for the mobile phone.

The invention discloses a method and a device for cooperative transmission. The method comprises the following steps: reporting signal measurement results by a terminal; determining the cooperative transmission state of the terminal according to the signal measurement results; and providing transmission service for the terminal according to the determined state. Compared with the prior art, the invention can be applied to effectively complete the cooperative transmission of multiple communities and to improve the throughput of the edge user.

The invention discloses an embedded type WIFI module. The embedded type WIFI module comprises a software part and a hardware part. The hardware part comprises a microcontroller chip, a WIFI chip, a program memory chip, a filter, a first crystal oscillator, a second crystal oscillator and a power switch tube, wherein the WIFI chip is connected with the microcontroller chip through data signals, the microcontroller chip is connected with the program memory chip through serial external interfaces, the WIFI chip and the microcontroller chip are connected with the power switch tube, the WIFI chip is connected with the filter and the first crystal oscillator, and the microcontroller chip is connected with the second crystal oscillator. The software part comprises a module interface management unit, an application program module, a webpage server, a miniaturized TCP/IP protocol stack, a WIFI driving module, a bottom layer hardware interface driver and a real-time operating system module, wherein the real-time operating system module is used as a framework, and the module interface management unit, the application program module, the webpage server, the miniaturized TCP/IP protocol stack, the WIFI driving module and the bottom layer hardware interface driver are integrated on the real-time operating system module. The embedded type WIFI module has the advantage of being small in size.

The invention provides a method aiming at the overall consideration and complexity of an uplink in a synergetic OFDM (orthogonal frequency division multiplexing) system for the resource allocation in a synergetic OFDM system. The method is characterized in that relays with the number thereof being a positive integer are arranged between a subscriber and a base station and each relay is provided with a plurality of subcarriers with the number being identical with that of the relays. The method comprises the following steps: firstly, the base station selects a relay according to the minimum equivalent signal-to-noise ratios of the subcarriers in each relay, that is, the base station selects the relay with the maximal equivalent signal-to-noise ratio of the subcarriers from the relays with the minimal equivalent signal-to-noise ratio of the subcarriers as the relay node for the subsequent synergetic transmission; then, the selected relay sequences the subcarriers between the subscriber and the selected relay and between the subscriber and the base station sequentially pair the subcarriers, namely, the subcarriers of the relay with high signal-to-noise ratio are used for transmitting the data supposed to be transmitted by the subcarriers of the subscriber with high signal-to-noise ratio; and finally, the base station carries out the water-filling power allocation on each intra-subcarrier according to the equivalent channel gain of each subcarrier pair, and starts the synergetic transmission.

The embodiment of the invention relates to the technical field of wireless communication, in particular to a method, a system and equipment for scheduling, which are used for conducting span-carrier wave scheduling on overlapped subframes after using carrier wave aggregation with different TDD (time division duplex) uplink/downlink configuration. The method in the embodiment of the invention comprises the following steps: when network side equipment needs to carry out scheduling to user equipment using the carrier waves with different TDD uplink/downlink configuration to carry out aggregation, SIF (sound intermediate frequency) for scheduling the carrier waves with the configuration different from the TDD uplink/downlink configuration of the carrier waves is determined; the network side equipment transmits DCI (data communication interrogate) containing the SIF to a user terminal by bearing downlink subframes n in the carrier waves of downlink control information, wherein n is integral number not less than 0. In the invention, span-carrier wave scheduling can be carried out on the overlapped subframes aiming at the aggregated carrier waves with different TDD uplink/downlink configuration, and the system performance and the resource utilization rate can be improved.

A transmitting unit divides a transmit data into a plurality of code blocks, and encodes each of the plurality of code blocks to generate a transmission signal. The transmitting unit transmits the transmission signal, and a receiving unit receives the transmission signal as a reception signal. The receiving unit receives performs an iterative decoding to each of the plurality of code blocks of the reception signal. The iterative decoding is terminated to a first code block group in which an error has not been detected before a first setting iteration count. The receiving unit, when being an error in the reception signal, transmits a retransmission request feedback data which contains a NACK data and a data indicating the first code block group to the transmitting unit. First resources are assigned for each of the plurality of code blocks of the transmission signal. The transmitting unit assigns resources of the first code block group of the plurality of code blocks of the transmission signal to second resources which are fewer than the first resources, based on the retransmission request feedback data, and retransmits the transmission signal to the receiving unit.

A master unit and a remote unit is provided for a multiband transmission system for distributing and combining signals of at least one wireless communication network and at least one digital network. A reference frequency generator is arranged in the master unit, the reference frequency generator being designed to clock a master modem for converting the signals of the at least one digital network. The reference frequency signal emitted by the reference frequency signal is restored via a reference frequency receiver and is used for closing a remote modem that is located there for demodulation.

The invention relates to a resource allocation method and device. The method comprises the following steps of: acquiring a semi-persistent scheduling (SPS) service to be accessed into a system and a lowest common multiple of the service periods of all SPS services accessed into the system; checking a resource at corresponding time points of the system within the time range of the lowest common multiple by using the service period of the SPS service to be accessed into the system as a time interval so as to judge whether the resource of the system at the corresponding time points meet the resource allocation requirement of the SPS service to be accessed into the system or not; and allocating the resource to the SPS service to be accessed into the system under the condition that the resource is determined to meet the resource allocation requirement of the SPS service to be accessed into the system at all corresponding time points within the time range in the resource judging step. The resource allocation method and device provided by the invention can be used for resource allocation and reservation for the SPS service newly appearing in HSPA+ (High Speed Packet Access Evolution).

The invention provides a method, a system and a terminal for monitoring a paging indicator and a paging channel. The method comprises the following steps: a terminal judges whether the terminal is in the cell reselection process or not; the terminal receives a neighbor cell list which contains indication information of configuration of a common channel of neighbor cells and is sent by a base station of a service cell if the terminal judges that the terminal is in the cell reselection process, wherein the indication information of the configuration of the common channel is used for indicating whether the configuration of the common channel of the neighbor cells and the service cell is the same or not; and the terminal selects a target cell from the neighbor cell list and monitors the paging indicator and the paging channel of the target cell according to the configuration of the common channel of the service cell when the indication information of the configuration of the common channel indicates that the configuration of the common channel of the target cell and the service cell is the same. The method can greatly reduce the time which can not receive paging during the cell reselection, reduce the probability of paging loss caused by the cell reselection and further improve the completion ratio of the system.

An embodiment of the invention discloses a method for transmitting uplink control information and a related device. The method for transmitting uplink control information and the related device are used for choosing channels to transmit the uplink control information at the scene that more than two program-controlled computers (PCC) exist on a carrier resource corresponding to user equipment (UE). The method includes: the UE receives uplink control channel simultaneous allowable parameters simultaneous physical uplink control channel-physical uplink control channel (PUCCH-PUCCH) sent by a base station, if the simultaneous PUCCH-PUCCH indicates yes, the uplink control information (UCI) required to be transmitted by each band is transmitted on a physical uplink control channel (PUCCH) carried by a main member carrier PPC of each band in a plurality of bands. In addition, the related device for achieving the method is further provided.

A method for setting transmission grant of a MIMO UE in a network of a wireless communications system for uplink transmission is disclosed. The method includes sending at least one control or configuration message corresponding to each HARQ entity of at least one HARQ entity or at least one HARQ process of an HARQ entity to the UE to set transmission grant of the UE when the UE performs uplink transmission through the at least one HARQ entity or the at least one HARQ process of the HARQ entity.

The embodiment of the invention provides a method and a device for providing a differentiated service for UE. The method mainly comprises the following steps of: obtaining the RAB (Radio Access Bearer) priority of the UE according to UE type information, user grade information and service type information; and providing a service for the UE according to the RAB priority. By utilizing the embodiment of the invention, on the basis of the RAB priority of the UE, the embodiment of the invention can allocate resources, such as bandwidth and the like to the UE, provide the differentiated service for the UE, obtain the comprehensive priority control strategy of the UE and achieve the optimal operation effect of an operator.

The embodiment of the invention provides a network quality estimation method and device for solving the technical problem of low estimation accuracy of network quality in the prior art, wherein the method comprises the steps of obtaining a comprehensive business indicator set for operation of network business of a to-be-estimated region, wherein the comprehensive business indicator set comprises one or multiple comprehensive business indicators of wireless establishment, business establishment, business transmission, network signal coverage, throughput rate factor and capacity use ratio, eachcomprehensive business indicator comprises at least one single business indicator and correspondingly at least one single indicator value; based on the comprehensive business indicator set, a networkquality perceptual model for estimating the network quality of the to-be-estimated region is established; based on the network quality perceptual model, the network quality of the to-be-estimated region is estimated, and an estimation result is obtained.

A hands-free system, through which a driver communicates without using hands with an on-board mobile phone such as a cell phone, is mounted on an automotive vehicle. Plural speakers including a center speaker installed in an instrument panel and door speakers each installed in each door are mounted on the vehicle. Whenever the center speaker is mounted on the vehicle, the center speaker is selected as a speaker from which voices transmitted from the mobile phone are outputted. Only when the center speaker is not mounted, the door speakers are selected. When the center speaker is selected, the voices transmitted from the mobile phone can be heard from a direction to which a driver's eye line is directed. Accordingly, the driver is able to hear the speaker sounds from the natural direction for him/her.

The invention provides a network resource optimizing method and a corresponding device which are applied to access equipment providing wireless access services to wireless terminal STA. The method and the device are characterized in that the method includes the following steps: step A, monitoring data flow of an online STA already accessed to a network, recording time duration when the online STA has no data flow, and adding the STA serving as an idle STA into an idle STA list when the time duration reaches a first preset threshold value; step B, judging whether enough online resources existing in a current network can be distributed to a new STA or not when the new STA requests for access to the network, if yes, allowing the new STA to be online, if not, selecting an idle STA from the idle STA list, enabling the idle STA to be offline to release online resources occupied by the idle STA, and then allowing the new STA to be online. By the method and the device, the defect of idle detection can be overcome, and a powerful guarantee is provided to network resource optimization.

The invention discloses a target wireless device positioning method based on regional division. The method comprises a step 1 of dividing a square target region to obtain N*N square unit subregions, a step 2 of calculating a search curve of an air vehicle in a target region, and a step 3 of taking the center of a unit subregion nearest to the air vehicle as a starting point and positioning each target wireless device in the unit subregions in such a manner that the air vehicle orderly searches the unit subregions in the target region. The target wireless device positioning method based on regional division is characterized in that all target wireless devices can be detected in the flight process, a fine-grained map of any point is provided and the positioning accuracy is improved. Meanwhile, the air vehicle is controlled to directly fly towards the target by thoroughly utilizing the directionality of the received signals and by use of regional division based flight line algorithm; compared with the existing warflying method, the target wireless device positioning method based on regional division has the advantages that the traversing scanning of the target region according to a predetermined space filling curve is avoided, the total flight distance is reduced and the power consumption of the air vehicle is reduced.

The invention discloses a cooperative transmission routing method for a wireless sensor network based on multi-relay multi-hop. The method comprises the following steps: step 1, a network initialization phase; step 2, a data preparation phase; step 3, a relay node number selection phase; and step 4, a data transmission phase. According to the cooperative transmission routing method for the wireless sensor network based on multi-relay multi-hop, a normal node in the sensor network sends the received data to an aggregation node at minimum transmission power through a multi-relay multi-hop transmission mode; and the minimum transmission power is calculated through the given interruption probability, and the optimal number of relay links and the optimal number of relay hops on each link can also be determined. By adopting the method, the resource waste caused by the excessive transmission power of source nodes or the occurrence of interruption caused by too low transmission power can be effectively avoided; the phenomenon that the number of relay links and the number of hops with minimum energy consumption can be found under different transmission distances can be ensured, and the problem of too fast energy consumption can be effectively alleviated.

The embodiment of the invention discloses a communication network switching method and a mobile terminal. The method comprises the following steps: receiving a measurement event issued by a network; acquiring an appointed threshold value in a GSM signal in the measurement event; and measuring the LTE signal intensity of the current service cell and the GSM signal intensity of an adjacent service cell; judging whether the LTE signal intensity is less than the preset threshold value; reporting a first measurement report to the network if the LTE signal intensity is less than the preset threshold value, wherein the GSM signal intensity in the first measurement report is the actual measurement value; reporting a second measurement report to the network if the LTE signal intensity is not less than the preset threshold value, wherein the GSM signal in the second measurement report is the preset intensity value, and the preset intensity value is less than the appointed threshold value. By use of the method disclosed by the invention, whether to change the GSM signal intensity to the preset intensity value slightly less than the appointed threshold value in the reported measurement report is decided according to the LTE signal intensity so as to meet a conventional SRVCC switching condition; the switching of the terminal is less frequent and a configuration requirement issued by the network is satisfied.

A system and method for location detection is disclosed. The system and method may derive estimates of a user's location by interfacing with other sources of location data. In one aspect of the invention, a client device may determine the user's location by using locally configured location services. The client device may also query a remote server that contains recent geolocation data of the user. Both the local and remote estimates may be presented to a user. The user may also be allowed to select the location that most accurately represents the user's current location.