Patents Assigned to Da Tang Mobile Communication Equipment Co., Ltd.
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Patent number: 8570882Abstract: The method for power control in HSDPA includes Step A, the UE with the highest priority and having data to be transmitted is selected according to the algorithm, the channel resource is distributed to the UE, and the original power level is set. Step B, the transmission power is deduced when the channel quality meets the condition; Otherwise the CQI is checked, if the value of CQI is under the highest rate level, or the data is the re-transmitting data, the transmission power is increased, or the power is kept the same level. Step C, channel resource and the UE with the highest priority are checked, if there exist, then go to step B, otherwise the method is ended. So the redundant power can be used when several UEs are controlled at the same time, the efficiency and the throughput performance are improved, and the interface is reduced. The device for power controlling is given at the same time.Type: GrantFiled: July 10, 2007Date of Patent: October 29, 2013Assignee: Da Tang Mobile Communications Equipment Co., LtdInventor: Song Wu
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Publication number: 20110261714Abstract: The present invention discloses a transmission method with multi-carrier aggregation, which includes: performing uplink and downlink configurations for each of the component carriers aggregated in a cell and ensuring coexistence of at least one identical uplink sub-frame and at least one identical downlink sub-frame between at least two of the component carriers and compliance of the configuration of at least one of the component carriers with an uplink and downlink configuration of R8; and transmitting the uplink and downlink configuration of any one of the component carriers and those of the other component carriers aggregated with the any one component carrier to an LTE-A UE accessing the corresponding component carrier. The invention further provides a transmission device with multi-carrier aggregation. With the invention, uplink and downlink configurations in an LTE-A system can be performed to accommodate a demand of a TDD system.Type: ApplicationFiled: November 4, 2009Publication date: October 27, 2011Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Xueming Pan, Guojun Xiao, Yu Ding, Shiqiang Suo, Shaohui Sun
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METHOD AND MOBILE MANAGEMENT ENTITY FOR OBTAINING BEARER CONDITION DURING HANDOVER OF USER EQUIPMENT
Publication number: 20110116478Abstract: The present invention provides a method for obtaining bearer condition during a handover of UE. The method includes: receiving, by a mobile management entity (MME), information of at least one bearer allowed to be accepted by a target base station (eNB) when the eNB makes an admission control for a UE based on received bearer information of the UE during handover of the UE; updating, by the MME, a UE-AMBR used by the target eNB based on the received at least one bearer. The present invention also provides an MME which enables the target side obtain actual bearer condition during handover of a UE.Type: ApplicationFiled: January 24, 2011Publication date: May 19, 2011Applicant: Da Tang Mobile Communications Equipment Co., Ltd.Inventors: Juan Zhang, Haijing Hu, Yihua Jiang, Ying Wang -
Publication number: 20110058505Abstract: The present invention provides a method for configuring a Sounding Reference Signal (SRS). The method includes: determining, by a base station, an SRS periodicity available for a cell, and determining at least one SRS configuration position available in a sub-frame for the cell based on the SRS periodicity determined; and jointly coding, by the base station, the SRS periodicity and the at least one SRS configuration position, and transmitting a result of the joint coding to all User Equipments (UE) in the cell through broadcast signaling. The present invention also provides an apparatus for configuring an SRS. The present invention implements configuration of SRS transmission and can avoid conflict between SRS and uplink control information.Type: ApplicationFiled: April 29, 2009Publication date: March 10, 2011Applicant: Da Tang Mobile Communications Equipment Co., Ltd.Inventors: Xueming Pan, Shiqiang Suo, Yu Ding, Guojun Xiao
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Publication number: 20110058521Abstract: The present invention discloses a user information notifying method, system and apparatus. In the present invention, a MME obtains RAT/Frequency Selection Priority information of UE, and notifies an eNodeB of the information. According to the method, system and apparatus of the present invention, the eNodeB can obtain the RAT/Frequency Selection Priority information of the UE, and further perform Radio Resource Management according to the information, thereby improving system performance.Type: ApplicationFiled: May 4, 2009Publication date: March 10, 2011Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Hui Xu, Juan Zhang, Ming AI
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Publication number: 20110051633Abstract: The present invention provides a method for implementing uplink transmission TA. The method includes: receiving, by a UE, a TA command, adding a TA value corresponding to the TA command and a pre-configured TA adjusting offset to obtain a practical uplink transmission timing advance TA?; and transmitting, by the UE, uplink data according to the TA?. The present invention also provides another method for implementing uplink transmission TA. Compared with the prior art, in the methods provided by the present invention, a TA adjustment indicating table is respectively configured in the eNodeB and the UE, and some items of the TA adjustment indicating table are commonly-used by a TDD system and an FDD system. The present invention also provides apparatuses for implementing uplink transmission TA. The present invention provides detailed solutions for implementing uplink transmission TA in the TDD system and achieves coherence between the designs of the TDD system and the FDD system to the largest extent.Type: ApplicationFiled: April 28, 2009Publication date: March 3, 2011Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Xueming Pan, Shiqiang Suo, Yu Ding, Yuexia Song
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Publication number: 20110044181Abstract: The present invention discloses a method for processing uplink signal. In this method, when a random access channel of a cell where a user equipment (UE) locates is within an uplink pilot timeslot, the UE determining whether there is a conflict between the random access channel and time-frequency position of an uplink channel quality sounding pilot of the UE; and if there is a conflict, the uplink channel quality sounding pilot will not be transmitted by the UE within the uplink pilot timeslot. The present invention also discloses a system and apparatus for processing uplink signal. By applying the method, system and apparatus of the present invention, the interference to detection performance of the random access channel caused by the uplink channel quality sounding pilot will be avoided, thereby increasing the detection performance of the random access channel.Type: ApplicationFiled: April 24, 2009Publication date: February 24, 2011Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shiqiang Suo, Libo Wang, Xueming Pan, Yu Ding
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Publication number: 20100284319Abstract: The present invention discloses a MBMS dedicated carrier configuration method, including: at least one of MBMS dedicated carriers in a cell is chose and assigned MBMS control information of all MBMS dedicated carriers and MBMS system information; and frequency information and scrambling code group ID information of at least one MBMS dedicated carriers assigned bundling information is assigned to conventional service carriers in the cell. The present invention also discloses a device for realizing said method and a MBMS transmission method based on dedicated carriers assigned the bundling information. The present invention realizes MBMS bundling on the dedicated carriers, and UE can receive services by directly sensing the carriers bearing control signaling, and thus it can reduce meaningless switching sense by the UE and save power.Type: ApplicationFiled: April 24, 2008Publication date: November 11, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Xuelong Wang, Yu Ding, Lei Mao, Shiyan Ren
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Publication number: 20100265910Abstract: Embodiments of the present invention provide a method, system and apparatus for assigning pilot resources. By assigning all or part of time and frequency resources of at least one configured SC-FDMA symbol in an UpPTS to an uplink SRS symbol and sending an assigning result to a mobile terminal, time and frequency resources in the UpPTS can be assigned to the uplink SRS symbol, so that after receiving the assigning result, the mobile terminal can send the uplink SRS symbol by using the time and frequency resources assigned to the uplink SRS symbol according to the assigning result.Type: ApplicationFiled: October 31, 2008Publication date: October 21, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shiqiang Suo, Deshan Miao, Shaohui Sun, Libo Wang, Hai Tang
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Publication number: 20100254341Abstract: A signal transmission method, which includes: each data symbol needing to be transmitted is weighted and repeatedly extended to obtain the extended data symbol of each data symbol; the extended data symbol of each data symbol and the pilot frequency symbol are modulated and mapped to the specified time-frequency locations of each corresponding block repeat resource block to obtain each corresponding repeat data unit block; each repeat data unit block is transmitted. A signal transmission device is also disclosed in the present invention.Type: ApplicationFiled: October 7, 2008Publication date: October 7, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shaohui Sun, Yingmin Wang, Hai Tang, Yuemin Cai
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Publication number: 20100246712Abstract: A method for data transmission is disclosed. The method includes: performing, by a system, resource element mapping on modulation symbols which include data to be transmitted and reference signals and which are allocated to antenna ports of a designated type; performing antenna port mapping on the modulation symbols which are through the resource element mapping; and generating Orthogonal Frequency Division Multiplexing (OFDM) signals based on the modulation symbols which are through the antenna port mapping and transmitting the OFDM signals via physical antennas. The present invention also discloses an apparatus for data transmission. In the method and apparatus provided by the present invention, through establishing a mapping relationship between physical antenna elements and antenna ports, beamforming weights are added to modulation symbols of users at the same time. Thus, beamforming operation of the users is implemented.Type: ApplicationFiled: November 10, 2008Publication date: September 30, 2010Applicant: Da Tang Mobile COmmunications Equipment Co. LtdInventors: Shiqiang Suo, Yingmin Wang, Wengang Li
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Publication number: 20100238847Abstract: A method for data transmission in a TDD system is disclosed. The method includes: configuring, by a base station, a length respectively for a Downlink Pilot Slot (DwPTS) and an Uplink Pilot Slot (UpPTS) within a special field of a radio half-frame based on a current coverage area taking one Orthogonal Frequency Division Multiplexing (OFDM) symbol as a unit, and issuing a configured result to a user device, wherein a total length of the DwPTS, a Guard Period (GP) slot and the UpPTS is kept to be 1 ms; constructing, by the base station, radio half-frames for data transmission according to the configured result. An apparatus for data transmission in the TDD system is also disclosed. According to the present invention, coverage area of different levels with smaller granularity is supported, radio resources are saved and transmission efficiency is increased.Type: ApplicationFiled: October 31, 2008Publication date: September 23, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shiqiang Suo, Guojun Xiao, Xueming Pan, Shaohui Sun, Yingmin Wang
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Publication number: 20100214915Abstract: A resource allocation method based on block repeat division multiple access, involves the steps of: distributing the usable BRBG according to the service requirement of a user; distributing RC series for the said distributed BRBG. The present invention also provides a resource management method based on block repeat division multiple access, which involves the steps of: detecting the operation environment in a district for a period of time; adjusting the number of the BRB in the BRBG of the district, according to the operation environment of the district. The present invention also provides the resource allocation/management device based on block repeat division multiple access.Type: ApplicationFiled: September 28, 2008Publication date: August 26, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Yuemin Cai, Yingmin Wang, Shaohui Sun, Hai Tang
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Publication number: 20100211841Abstract: The present invention discloses a method, an apparatus and a system for low-density parity-check (LDPC) coding and decoding. The coding method includes the following steps: constructing each layer of a check matrix of a layered LDPC code used as an error correcting code; when data is initially sent by a data transmitting terminal, performing first-layer-coding of the data to be sent by using the first layer of a check matrix of the LDPC code, sending the first-layer-coded data; when data for (n?1)th retransmission is sent by the data transmitting terminal, performing nth-layer-coding of the data by using the nth layer of a check matrix of the LDPC code, sending the nth-layer-coded data, wherein n is an integer no less than 2. It is possible to reduce the system overhead, decrease the decoding delay, and improve the decoding performance by using the technical solution of the present invention which is also adapted to high-speed data services.Type: ApplicationFiled: June 6, 2008Publication date: August 19, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Yanbo Cao, Hongqiang Li, Lu An, Yuanxin Qiao, Jianxun Sun, Yuxin Dong
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Publication number: 20100202351Abstract: Embodiments of the present invention provide a method, system and relevant apparatuses for supporting addressing by a user static Internet Protocol (IP) address in a Long Term Evolution (LTE) system.Type: ApplicationFiled: September 11, 2008Publication date: August 12, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Jiande Xi, Guosheng Zhao
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Publication number: 20100189081Abstract: A method using a frame structure which supports relay for wireless transmission, which divides the time slots of a sub-frame into some zones, in which the data is transmitted using the manner of TDD, wherein further including that at least one time slot in a sub-frame is set as a hybrid zone; the transmission of the data is realized through frequency division multiplexing the access link and relay link in the hybrid zone of the sub-frame; and also the multi-hop relay is supported under the two work manners of relay in sub-frame and relay in frame.Type: ApplicationFiled: July 8, 2008Publication date: July 29, 2010Applicant: Da Tang Mobile Communications Equipment Co., Ltd.Inventors: Guanghui Zhang, Yongbin Xie, Yingmin Wang, Shaohui Sun, Yang Yu
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Publication number: 20100177669Abstract: A method and an apparatus for an uplink control signaling transmission in a time division duplex OFDMA system are provided for the long term evolution time division duplex (LTE TDD). A signaling processing unit reserves frequency resource for an uplink control channel according to the total amount of the uplink control signaling, and the reserved frequency resource are assigned on both sides of the frequency domain used by uplink time slots, so that the uplink control signaling of a terminal UE is transmitted on the position and the bandwidth of the reserved frequency resource. The transmitted uplink control signaling is transmitted on respective reserved uplink control sub-channels by an intra-subframe hopping way, each terminal UE or a group of UEs corresponding to a frequency-hop sequence. The present invention is simple to realizes and capable of utilizing resource repeatedly and utilizing the time domain and frequency domain diversity simultaneously.Type: ApplicationFiled: March 21, 2008Publication date: July 15, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shiqiang Suo, Guojun Xiao, Ruiqi Zhang
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Publication number: 20100177736Abstract: A method and device for indicating data re-transmission when area switching in LTE system, wherein the method comprises the following steps: S_eNB sends PDCP-SDU CN report to T_eNB in order to announce PDCP-SDU SN received, and T_eNB announces PDCP-SDU SN received by S_eNB to UE. Thereby, UE would not re-transmit PDCP-SDU corresponding to received SN, which avoids re-transmission of useless PDCP-SDU, and saves radio resources comparing with prior solutions.Type: ApplicationFiled: September 2, 2008Publication date: July 15, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Ying Wang, Haijing Hu, Yihua Jiang, Guosheng Zhao, Xunwei Zhao
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Publication number: 20100142390Abstract: A method for realizing space division multiplexing is provided. The method comprises steps as follows: A. acquiring space information of users, and calculating space division isolation between the users based on the acquired space information; B. generating a set of user groups for the space division multiplexing based on the space division isolation between users calculated in step A; C. selecting a user group from the set of user groups for the space division multiplexing generated in step B and allocating the same physical resource to two users among the selected user group when conducting the space division multiplexing. An apparatus for realizing space division multiplexing is further provided. Using said method and apparatus, the space division isolation can be realized reasonably with accuracy.Type: ApplicationFiled: March 7, 2008Publication date: June 10, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Changguo Sun, Yingmin Wang, Shiqiang Suo, Shaohui Sun
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Publication number: 20100105366Abstract: A method for determining a single frequency network area, applied to a broadcasting and multicasting technology field, includes: determining a cell or a cell cluster with a terminal subscribing to the broadcast multicast service; determining a cell or a cell cluster without a terminal subscribing to the broadcast and multicast service that is neighboring to the cell or the cell cluster with a terminal subscribing to the broadcast multicast service, as an auxiliary cell or an auxiliary cell cluster; selecting the auxiliary cell or the auxiliary cell cluster that satisfies the predetermined conditions, and determining both the selected auxiliary cell or the auxiliary cell cluster and the cell or the cell cluster with a terminal subscribing to the broadcast and multicast service as a single frequency network area. Also, a device for determining the single frequency network area is provided.Type: ApplicationFiled: March 11, 2008Publication date: April 29, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Guosheng Zhao, Wenqing Wang, Hai Bi, Yu Ding