| DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120014358 | METHOD, SYSTEM AND DEVICE FOR DETERMINING BANDWIDTH OF UPLINK SOUNDING REFERENCE SIGNAL - The present invention discloses a method, system and device for determining a bandwidth of an uplink sounding reference signal SRS. The method for determining the bandwidth of the uplink SRS comprises the following steps: determining whether SRS is transmitted with the uplink pilot time slot if the SRS is transmitted with the largest bandwidth level; transmitting SRS with the non-extensive SRS bandwidth if SRS is determined to be transmitted with the uplink pilot time slot and the UE reaches the power limit. In the present invention, the signal-to-noise ratio detected on the bandwidth with which SRS transmitted can be maintained, and the accurate detection of the channel information is thereby realized. | 01-19-2012 |
| 20120008574 | METHOD, SYSTEM AND DEVICE FOR ADAPTIVE MODULATION AND CODING - An adaptive modulation and coding method is provided by the present invention, comprising: selecting punctured Physical Resource Blocks (PRBs) to transmit the downlink data for the User Equipment (UE); determining the Transport Block Size (TBS) and the number of punctured PRB pairs for transmission to the UE based on the carried service; scheduling the downlink data for the UE based on the determined TBS, and transmitting the number of the used punctured PRB pairs and a Modulation and Coding Scheme (MCS) sequence number to the UE; and the UE converting the number of the punctured PRB pairs to the number of normal PRB pairs, determining the modulation scheme and the TBS sequence number based on the MCS sequence number, and determining the TBS of the downlink data based on the number of the normal PRB pairs and the TBS sequence number. The specific condition when downlink data are transmitted with punctured PRBs may be performed in the present invention on the basis of utilizing the existing resources and adaptive processing of the general subframes by performing conversion between the number of punctured PRBs and the number of normal PRBs in scheduling resource for the UE with the NodeB, which may be implemented simply and efficiently. | 01-12-2012 |
| 20110294513 | METHOD, SYSTEM AND DEVICE FOR INDICATING TRANSMISSION AND TRANSMITTING PREAMBLE - A method, a system and a device for indicating and transmitting the preamble are used to solve the problem existing in the prior art, which reduces the resource utilization efficiency due to that the user equipment (UE) sends the preamble to the evolution base station through the physical random access channel (PRACH) selected by itself in the present random access. The method includes: determining the channel signature associated with the PRACH assigned to the terminal side; sending the determined channel signature to the terminal side, and indicating the terminal side to transmit the preamble using the PRACH associated with the channel signature. Adopting said method can improve the resource utilization efficiency. | 12-01-2011 |
| 20110280339 | METHOD AND DEVICE FOR MODULATING THE INFORMATION OF TFCI - A modulation method and device for modulating transfer format combination indicator TFCI information, the method including: dividing equally original TFCI information in a unit of 2 bits in a transmission time interval TTI; extending the resultant respective parts of the TFCI information after the division to correspond to identifiers of one or more designated energy points in a preset constellation; and mapping the respective extended parts of the TFCI information to the corresponding energy points for modulating. | 11-17-2011 |
| 20110268003 | Method for Enhancing User Equipment (UE) Power Saving Performance and UE - A method for enhancing power saving performance of user equipment (UE) is provided. The method includes the following steps: a UE receives the downlink data transmitted by an evolved node B (eNB); the UE starts a corresponding RTT Timer according to the received downlink data, the timing of the RTT Timer is determined based on the uplink/downlink (UL/DL) configuration and the sub-frame number of the downlink sub-frame carrying the downlink data by the UE; and the UE controls the discontinuous reception (DRX) process according to the RTT Timer. By re-defining the RTT Timer, the present invention can improve power saving performance of the UE in TDD system effectively. | 11-03-2011 |
| 20110210845 | ALLOCATING METHOD OF MOVING AREA LIST OF USER EQUIPMENT AND CORRESPONDING APPARATUS - A method of allocating the moving area list of user equipment which relating to wireless communication technology. Interacting signaling between network and UE is reduced. The utilization efficiency of network resource is enhanced. The method includes, receiving the area ID which is pre-defined from UE, acquiring the history information of the last allocated moving area list from the mobility management entity (MME) which allocated the last moving area list, allocating new moving area list according to the history information and the received area ID. Accordingly, a MME and UE are disclosed. | 09-01-2011 |
| 20110164566 | Method, Apparatus and System for Enabling to Release PDN Connections - A method for releasing Packet Data Network (PDN) connections includes: when the subscription data of the user in Home Subscriber Server (HSS) changes, the HSS notifies Mobility Management Entity (MME) to trigger releasing of the PDN connections ( | 07-07-2011 |
| 20110138447 | Method, System and Device for Obtaining a Trust Type of a Non-3GPP Access System - The invention provides a method for obtaining a trust type of a non-3GPP access system comprising the following steps: a user equipment UE establishing a underlying link with a non-3GPP access system selected by the UE; the UE initiating an access authentication request and sending the identification information of the UE and the information of the non-3GPP access system to an Authentication, Authorization, Accounting server through the non-3GPP access system; the UE receiving a returned access authentication response and the trust type of the non-3GPP access system, and the trust type of the non-3GPP access system being determined by the AAA server based on the identification information of the UE, the information of the non-3GPP access system and the operator's strategy. The invention can realize that the trust type of the non-3GPP access system is determined and is informed to the UE by the AAA server during the access authentication performed by the UE, so that the UE can obtain the trust type of the non-3GPP access system. | 06-09-2011 |
| 20110098048 | Method, System and Device for Reporting User Location Information - A method for reporting location information of user is disclosed in the present invention, which is configured for achieving the report of a location information of User Equipment (UE) during the procedure that UE is handed over to another serving cell, and includes the following steps: a source evolved Node Base (eNB) initiates a handover procedure; during the handover procedure, the source eNB sends the location reporting information to a target eNB, the target eNB acquires the location information of UE based on the location reporting information and reports it to a Mobility Management Entity (MME) corresponding to the target eNB. According to the present invention, it is possible for the source eNB to notify the target eNB based on a handover request of UE that the target eNB should report the location information after the UE is handed over to another serving cell, so that the target eNB can report the location information of UE to MME during the handover procedure of the serving cells. The present invention simplifies the signalling flow and is simple to be implemented. | 04-28-2011 |
| 20100311322 | MEASURE METHOD, A REPEATER AND A BASE STATION IN THE PROCESS OF CELL HANDOFF - The present invention provides a measurement method in a cell handover procedure, comprising: A. after network measurement is triggered, a base station schedules resources, which are needed for transmitting uplink data, for a user terminal; and B. the base station and relay stations measure relevant data transmitted from the user terminal on the resources scheduled by the base station, and the relay stations report the detection information of the uplink signal derived from the measurement to the base station. A relay station and a base station for realizing cell handover are also provided. The present invention can realize that during measuring the quality of the signal from a user terminal and a network side, the network performs the measurement, and selects a target node to which the user terminal will handover according to the result of the measurement. | 12-09-2010 |
| 20100303162 | MULTI-USERS DETECTING METHOD AND DEVICE OF OFDM TRANSMISSION SIGNAL - Multi-users detecting method and device of OFDM transmission signal include that: a received data sequence is composed of the received signal which is in the position of the time and frequency symbol corresponding to the same data symbol in multi-repeating blocks; the composed repeating channel response sequence array which is corresponding to the received data sequence is determined; the received data sequence is detected to acquire the data symbol information of multi-users by using the composed repeating channel response sequence array. The technical solution can effectively restrain the multi-address interference and the interference between symbols during OFDM transmitting signal and improve the system performance greatly. | 12-02-2010 |
| 20100302998 | METHOD OF PROCESSING IN RANDOM ACCESS PROCEDURE, SYSTEM AND APPARATUS THEREOF - The present invention proposes a method processing in random access procedure, comprising the following steps: when a Preamble transmitted by a random access node is detected by a base station, the base station calculating TA according to the Preamble detected by itself and transmitting it to the random access node; the base station receiving random access detection information reported from a transparent relay station and selecting a service node for the random access node; the base station receiving an uplink signaling transmitted by the random access node after the random access node adjusted the uplink timing advance according to TA calculated by the base station, and notifying the random access node of the access condition through a contention resolution message according to the selected service node, and the random access node performing an access procedure based on the access condition. According to the present invention, the duration of the random access procedure can be shortened, and the service QOS can be improved, which gives the user better service experience. | 12-02-2010 |
| 20100278090 | ACCESS METHOD AND APPARATUS OF MULTIMEDIA BROADCAST MULTICAST SERVICE ON DEDICATED CARRIER - An access method of MBMS on dedicated carrier relates to MBMS access technology on dedicated carrier, including: synchronize a user equipment to a MBMS dedicated carrier; the user equipment detects a start-frame of system message on the MBMS dedicated carrier; and the terminal monitors the system message from the start-frame of system message. An apparatus of realizing the method is also provided. | 11-04-2010 |
| 20100278080 | TRANSMISSION METHOD AND DEVICE IN LONG TERM EVOLUTION TIME DIVISION DUPLEX SYSTEM - A transmission method in a Long Term Evolution time division duplex system can carry out reconfiguration for half-frame structures. According to the coverage range requirements of the system, it performs flexible configuration of the number of special time slot areas and the downlink pilot time slots, guard intervals or uplink pilot time slots included therein, and so can support different coverage ranges. A base station and user terminal using above method in the Long Term Evolution time division duplex system. | 11-04-2010 |
| 20100254253 | METHOD, SYSTEM AND APPARATUS FOR SIGNAL GENERATION AND MESSAGE TRANSMISSION IN BROADBAND WIRELESS COMMUNICATIONS - Method for signal generation in broadband wireless communications, comprises: A. modulating, segmenting and serial-parallel converting the signal data to be transmitted, then computing DFT of the serial-parallel converted data so as to transfer them to frequency domain; B. performing block unit modulating processing and block repeat modulating processing on the frequency domain data, then mapping the block units to assigned time-frequency positions; C. computing IFFT of the mapped block units, then adding them to the cycle prefix, thus the random sequences in time domain are generated. Apparatus for signal generation, Method and system for message transmission in broadband wireless communications are also disclosed. The problem of resource allocation and scheduling, and problem of interference coordination and control are solved, the throughput and performance of communication system are greatly improved. | 10-07-2010 |
| 20100246456 | METHOD AND AN APPARATUS FOR DETERMINING THE RADIO FRAME STRUCTURE OF TIME DIVISION DUPLEX SYSTEM - A method for determining the radio frame structure of a Time Division Duplex system is disclosed, which comprises: configuring, by the network side, the radio frame structure used for service transmission as containing two half-frames each of 5 ms, wherein each half-frame consists of eight service time slots of 0.5 ms and one special time slot field of 1 ms, two consecutive service time slots form a subframe of which the length is 1 ms, and the special time slot field contains a DwPTS, a GP and an UpPTS; determining the lengths of the DwPTS, the GP and the UpPTS in the special time slot field according to the requirements of the coverage range, and determining the radio frame structure used for service transmission. By reconfiguring the radio frame structure, the invention can flexibly support different coverage ranges, enhance the flexibility of satisfying different service requirements, and implement the coexistence of two types of TDD systems. | 09-30-2010 |
| 20100222064 | METHOD AND DEVICE FOR INITIAL SYNCHRONIZATION BETWEEN GSM SYSTEM AND TD-SCDMA SYSTEM - A method for initial synchronization with TD-SCDMA system in the connection mode of GSM system, to resolve the problem of the downlink synchronization codes (DwPTS) may be undetectable or taking too much time to be detected when a TD-SCDMA/GSM dual-mode terminal is examining TD-SCDMA frames in GSM connection mode with prior art; in the connection mode of the GSM system, the method receives or transmits service data within the service time slots of the GSM frame at the radio frequency band of the GSM system, and receives TD-SCDMA signal within the idle time slots of the GSM frame at the radio frequency band of the TD-SCDMA system, and detects DwPTS in the received TD-SCDMA signal, thus the terminal in the connection mode of the GSM system can quickly detect the DwPTS in TD-SCDMA frames, achieving the initial synchronization of the TD-SCDMA/GSM dual-mode system. A GSM system processing apparatus and a communication apparatus are also disclosed in the invention. | 09-02-2010 |
| 20100189165 | Method, Device and System for Detecting Pilot Sequence Signal - A method for detecting pilot sequence signal includes: when the service data signal in the received signal is confirmed to be right, the said service data signal is extracted from the received signal, wherein, the service data signal and the pilot sequence signal in the received signal are located in the same slot; the pilot sequence signal is obtained from the received signal having been extracted the service data signal. At the same time, a communication device and a communication system are provided. The interference of pilot sequence signal made by the service data signal can be restrained, the detecting performance of the pilot sequence can be enhanced by using the present invention. | 07-29-2010 |
| 20100179702 | METHOD AND DEVICE FOR REALIZING POWER CONTROL ON A CONTROL CHANNEL - A method and apparatus for realizing power control on a control channel including measuring the interval between the current control channel transmission and the last control channel transmission; comparing the measured interval with a preset threshold, and if the interval is larger than or equal to the preset threshold, carrying out the current control channel transmission by using the initial transmit power, or controlling the current control channel transmission by using the open loop power control and, otherwise, controlling the current control channel transmission by using the closed loop power control. When the control channel is an uplink control channel, it may be determined whether a compensation for path loss variance should be added based on the closed loop power control according to a related command, so as to enable that the power control can be provided effectively when the control channel transmission is discontinuous. | 07-15-2010 |
| 20100118743 | METHOD, SYSTEM, BASE STATION AND TERMINAL FOR PROCESSING THE REFERENCE SYMBOL - A method, system, base station and terminal for processing the reference symbol can support to transfer the common reference symbol and the user dedicated reference symbol synchronously. In the present invention, the transmitting end configures the reference symbol structure for the downlink sub-frame according to the used antenna number; the transmitting end inserts the common reference symbol and the user dedicated reference symbol which will be transmitted into the downlink sub-frame according to the reference symbol structure and transmits them. The present invention can support to transfer the common reference symbol and the user dedicated reference symbol synchronously. | 05-13-2010 |
| 20100085934 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL AND A COMMUNICATION SYSTEM - A method, apparatus and system for transmitting signal, the method includes: using the weighting factor sequence, processing weighting repeating modulation for the basic cell block mapped by the data symbol block at the sending end, and obtaining a plurality of the repeating cell blocks corresponding to the said basic cell block; the sending end maps each repeating cell block to the appointed time-frequency position respectively, then sends the signals in the said time-frequency position; and the receiving end demodulates the plurality of data symbol blocks from the blocks, and incorporates the plurality of data symbol blocks; the said receiving end demodulates the incorporated data symbol blocks, and generates the received data. This scheme can be called for short as the block repeating spread diversity transmission technology, it is based on the information symbol in the time-frequency domain two-dimensional grid point. This scheme doesn't restrict the modulating signal generation manner at bottom, it can form a new multiple address/multiple path transmission scheme, and can be incorporated with the other key technologies in the existing mobile communication. | 04-08-2010 |
| 20090010228 | Method for Restraining Cross-Slot Interference in Slot Cdma System - The present invention discloses a method for suppressing cross-slot interference in a time-slotted CDMA system. The method includes: determining, by a base station, positions of cross slots according to configuration information of local cell and configuration information of co-frequency adjacent cells, and performing multi-cell channel estimation on the cross slots to obtain channel estimation results; determining, by the base station, code channel configuration information of the co-frequency adjacent cells, grouping the determined code channels and determining the code channels of the co-frequency adjacent cells involved in a joint detection; and performing, by the base station, the joint detection according to the multi-cell information estimation results and the determined code channels of the base stations involved in the joint detection to obtain detection data. With the present invention, interference from a base station transmitting downlink signals in cross slots to a base station receiving uplink signals in the corresponding slot may be reduced, and the system capacity and the stability may be improved. | 01-08-2009 |
