35results about "Radio transmission for post communication" patented technology

An apparatus and method are provided for performing scheduling in a Node B for data transmission of a user equipment (UE) in a mobile communication system supporting an enhanced uplink dedicated channel (E-DCH). The Node B receives, from a radio network controller (RNC), scheduling assistance information for an uplink service to be provided from the UE. The Node B estimates a data amount for the uplink service on the basis of the scheduling assistance information in each scheduling period. The Node B schedules data transmission for the uplink service according to the estimated data amount.

A communication apparatus capable of easily identifying a communication partner and securely sharing a session key between the communication apparatus and the communication partner even if the communication apparatus has a processing power that is not so high includes a short-range active communication unit 101 transmitting an inquiry signal to a short-range external communication apparatus by electromagnetic waves and waiting for a response to the inquiry signal; a long-range communication unit 104 capable of communication by the electromagnetic waves in a range wider than the communication area of the short-range active communication means; a switching unit 111 switching to either the short-range active communication unit or the long-range communication unit; and an asymmetric key generator 102 generating a pair of an encryption key and a decryption key corresponding to the encryption key. The communication apparatus is characterized by using the decryption key to decrypt an encrypted session key transmitted from the external communication apparatus and transmitting to the external communication apparatus a communication switching request signal to request the switching to the long-range communication unit and communication by using the long-range communication unit.

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 provides an information transmission method in a subcarrier time slot (TS) 0, which comprises the following step of: configuring one or any combination of downlink channels related to a DL DPCH and HSDPA (including an HS-SCCH and an HS-PDSCH), downlink channels related to HSUPA (including an E-AGCH and an E-HICH) and an FPACH in the subcarrier TS0 so as to transmit information between a NodeB and user equipment (UE) on the configured corresponding channels. By the method, the channel is configured in the subcarrier TS0 and corresponding data transmission is performed on the configured channel, so that the utilization rate of a frequency spectrum is greatly improved.

A cell search circuit which does not invite an increase in search time, even if coherent integration is performed, and which minimizes an increase in the scale of the circuitry. The circuit comprises a spread signal generator having a phase shifting function, a multiplier for multiplying an output of the spread signal generator by an input signal, a ring buffer accumulating results of correlation, performed a number of times, in order to perform coherent integration over a plurality of signals, and an accumulator constructed by a single-signal portion of the ring buffer and an adder. Integration is performed over a length of time the same as unit-signal duration prior to spreading, coherent integration is performed by summing results of time integration of each signal, which results have been accumulated in the ring buffer, and the shifting operation of the spread signal generator is controlled based upon results of coherent integration.

The invention discloses a clock backup method and a clock backup system for a time division duplex base station. The method comprises the following steps of: synchronizing a primary clock adopted by a first time division duplex base station and a first standard clock source received by the first time division duplex base station, and synchronizing a backup clock adopted by the first time division duplex base station and a second standard clock source received by a second time division duplex base station; detecting whether the primary clock or the first standard clock source is normal; and if the primary clock or the first standard clock source is abnormal, switching the abnormal primary clock or first standard clock source to the backup clock. The invention solves the problem of low reliability of the system due to increase of backup cost and incompleteness of the backup scheme.

In a network that roughly comprises a temporary master station and a plurality of slave stations and is an adhoc network, which can be immediately constructed in situ, and is a temporary master station interposition-type network in which a temporary master station is present, the temporary master station receives and judges an interference detection packet sent from the slave station. By virtue of this construction, an asynchronous interference avoiding method and an asynchronous interference avoiding system can be realized which can reliably avoid interference.

The method is capable of calculating shortest path to meet need of protecting SDH/SONET. The method includes following steps. Collecting attributive information of links connected to each node directly obtains serial numbers of protection entities that each link belongs to. According to standard flood of protocol, collected information is diffused to other nodes. Based on serial numbers of protection entities that each link belongs to, each node is recombined so as to form topological structure of each protection entity in whole network and attributive information of relevant links. Calculation of constraint paths in transmission network is carried out. Based on proper protection types of transmission network, the invention calculates shortest path to meet constraint condition. Since protection topology is calculated in advance, thus the invention reduces numbers of repeated calculation effectively so as to calculate constrained path in real time.

According to the present invention, a system and a method of controlling mobile communication terminals using global positioning system (GPS) are provided. According to the present invention, the method includes: generating a GPS signal at a GPS signal generator; receiving the GPS signal from the GPS signal generator; extracting control information from the GPS signal; and converting use modes of the mobile communication terminal by using the control information. Accordingly, use modes of the mobile communication terminal located in a place required to restrict some functions of the mobile communication terminal can be collectively and automatically converted without additional costs.

A mobile radio communication system which allows stored messages to be broadcasted to any number of destinations in the mobile radio communication system which allows communication of stored messages, such as electronic mails or voice mails is provided. A broadcast group is previously registered in a second database 26, and if a mail having a destination address corresponding to the broadcast group is received, a message is broadcasted to each of members included in the corresponding broadcast group. At this time, replacing the sender's address of the broadcast message with the destination address corresponding to the broadcast group allows the reply message to the broadcast message to be handled as a broadcast message to the same members.

The present invention relates to a method for defining, in a TDD wireless communication system in which broadband is configured by means of carrier aggregation, transceiving timing for a data channel and a control channel when cross-carrier scheduling is implemented.

Phase and amplitude deviations, which are generated, for example, by cables connecting an array antenna of a CDMA base station and the base station, are calibrated in the baseband.

The base station comprises: an antenna apparatus 1; couplers 2; an RF unit 3 that converts a receive signal to a baseband signal, converts a transmit signal to a radio frequency, and performs power control; an A/D converter 4 for converting a receive signal to a digital signal; a receive beam form unit 6 that multiplies the receive signal by semi-fixed weight; a despreader 7 for this signal input; a time-space demodulator 8 for demodulating user data; a despreader 9 for probe signal; a space modulator 14 for user data; a spreader 13 for user signal; a channel combiner 12; a Tx calibrater 11 for controlling calibration of a signal; a D/A converter 10; a unit 16 for calculation of correlation matrix for generating a probe signal used for controlling an Rx calibration system and a TX calibration system; a spreader 17 for probe signal; a power control unit 18; a D/A converter 19; an RF unit 20 for probe signal; an A/D converter 21 for signal from the couplers 2; and a despreader 22.

The invention provides a method for sending base station information, a system thereof and a base station, wherein, the base station carries the base station attribute information in radio news and sends the information to an access device within the self coverage. In the way, the access device within the coverage of the base station is provided with self base station attribute information, thus the access device can receive accessible base station attribute information of a plurality of base stations when the access device is within the coverage of a plurality of base stations, and selects a most appropriate base station for access according to the base station attribute information of a plurality of base stations.

The invention relates to a time division-synchronous code division multiple access (TD-SCDMA) system and discloses an access method and user equipment for enhancing a random access channel. In the invention, as long as an E-DCH service area is changed, no matter UE can receive a system information block SIB7 or not, the default dynamic continuous level N is used for accessing E-RUCCH. The invention solves the problem that in the prior art, when the E-DCH of the UE is configured at a main carrier, even the UE can acquire the dynamic continuous level N from the SIB7, which N value in an N value list in the SIB7 needs to be used still can not be determined. Thus, the UE can determine the dynamic continuous level which needs to be used when the E-DCH service area is changed, thereby realizing the normal access of the E-RUCCH.

The method includes following steps: advertising is carried out for service parameters of MBMS service at advertising period by BM-SC; after allowing adding time started comes, UE of receiving service advertising message launches procedure of adding MBMS service; after receiving request of adding MBMS service from UE, network determines whether time started for allowing adding MBMS service has come; if yes, network accepts the UE request; otherwise, the network rejects the UE request. The invention makes UE know when MBMS service can be added, and time limitation is added for adding MBMS service so as to raise utilization efficiency of network resources.

The invention discloses a subgroup processing method and a device, an information alternating method and a frame constructing device. The information alternating method includes the steps that a base station alternates information with a terminal by a frame, the frame includes uplink operation group information, downlink operation group information, an uplink group resource allocation table, a downlink group resource allocation table, and a plurality of gap resource subgroups which are allocated according to the preset attribute and are distributed along the whole frequency domain. Using the embodiment of the invention can avoid the movements of the sub-channels caused by link adaptation among the gap resource subgroups, can overcome the defects that the broadcast information amount increases, the gap resource occupied by the resource allocation indication information increases, and the throughput of the effective data decreases due to the movements of sub-channels among the gap resource subgroups, and can fully ensure the advantageous effect that the two-class broadcast can produce.

Provided are a method and apparatus for measuring interference in a wireless communication system. A terminal receives, from a base station, a zero-power channel state information (CSI) reference signal (RS) indicator that indicates whether or not to estimate interference using a zero-power CSI RS signal, and, according to the zero-power CSI RS indicator, measures interference on the basis of the zero-power CSI RS.

The invention relates to a method of synchronizing a mobile station with a base station in a wireless communications system, to a mobile station for a wireless communications system, as well as to a wireless communications system of this kind. In order to enable faster ultimate synchronization, it is proposed to compare components of the received data not only with a stored synchronization pattern, but also with a stored identification pattern prior to the adaptation of the timing of the mobile station to received data. Already before the synchronization it can thus be determined with a high degree of probability whether received data originates from a desired base station or not. The necessity of checking the contents of packets which are not associated with a desired base station can thus be avoided. Moreover, because of such preliminary checking, it is no longer necessary either to reset the timing of the mobile station after synchronization on the basis of data which later appear to originate from another base station.

A cellular phone includes an inner loop portion and an outer loop portion both for conducting power control. The outer loop portion includes a timer counter. The timer counter transmits a timing signal to a communication quality comparing section when a set length of time elapses. The communication quality comparing section compares a block error rate (BLER) of received data with a target BLER even when a predetermined amount of data has not been received. When the BLER of the received data is equal to or higher than the target BLER, a target signal to interference power ratio (SIR) is decreased. Accordingly, the cellular phone can decrease the target SIR even when the amount of the received data is small, and no request for an unnecessarily high transmission power is made to a base station.

A cellular radio communication system, a cellular radio communication method and a rake reception method for raising the efficiency of a baseband, and increasing the freedom of the structure of the radio base station. A cellular radio communication system comprises a baseband and first to Nth transmitter-receicvers connected by a transmission line. The baseband is provided with a modulator for producing, by a digital process, modulation signals to be sent from the first to Nth transmitter-receivers, and a demodulator for demodulating digital modulation signals received and analog-to-digital converted by the first to Nth transmitter-receivers. The transmitter-receiver is provided with a digital-to-analog converter for converting a digital modulation signal to a modulation signal to be sent, and an analog-to-digital converter for converting a received modulation signal to a digital modulation signal.

A method for generating a transmit signal, the signal contains N antenna data signals (A1(X), ..., AN(X)), which can be transmitted through N transmit antennas, wherein the The useful data signal (X) is channel coded. In the signal transmission path between channel coding and transmission via transmit antennas, data rate matching can be performed by a data rate matching stage (RM; RM1, RM2), so that the number of transmit antennas can be pre-defined independently of the code rate (Rc) Sure.

This invention is hinge device of portable terminal which consists of the following parts:rotation axis which forms at the lower end of the turning cover;detent component which is showed radial morphology at the circle plane of the rotation axis has springiness and at least install one detent component;fixation sulciform which forms at the upper end of the so as to accommodate the rotation axis;guide ring which is inserted into the fixation groove and forms multi guide holes,so as to fix the detent component from multi angles temporarily.Thus,this invention provides using convenience.