Abstract: 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.

Abstract: The present invention discloses a control channel allocation method, a packet data transmission method and a RNC of a multi-carrier HSDPA (high speed downlink packet access) technology, wherein the allocation method includes: when a UE accesses a network, the network allocating K pairs of uplink and downlink control channels to be monitored by the UE; during a HSDPA service transmission process, the network selecting N pairs from the K pairs of uplink and downlink control channels to transmit control messages, wherein the selected downlink channels are the corresponding uplink channels are on a same carrier; and the network allocating a pair of uplink and downlink associate channels on each carrier where the selected N pairs of uplink and downlink control channels locate, wherein M?N?1 and M is a number of carriers used by the network to transmit packet data.

Abstract: 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.

Abstract: This application discloses a nomadic data access system and provides a new communication system and relevant devices to lower the complexity of the system. The system includes a core network and an NDA NodeB, wherein an NDA part in the core network is configured to establish a communication interface with the NDA NodeB, to establish a communication link for an NDA user equipment through the NDA NodeB and to transmit an NDA user data service to a 3GPP part in the core network; and the NDA NodeB is configured to establish the communication interface with the NDA part in the core network, to establish for the NDA user equipment the communication link with the NDA part in the core network and to transmit the NDA user data service, or to establish a communication link with a local area or wide area Internet and to transmit the NDA user data service to the local area or wide area Internet. This application further discloses devices in the system and relevant cell access and switching methods.

Abstract: 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.

Abstract: A method for determining a data transmission offset includes: synchronizing a first time division duplex TDD system with a second TDD system (a500); determining a transmission timing advance of a user terminal according to a deviation between random access time and desired time of the user equipment during establishing the uplink synchronization of the second TDD system (a501); determining an offset of a time slot of the second TDD system according to a time difference between the time slots of the first TDD system and the second TDD system (a502); and obtaining a data transmission offset of the time slot by adding the determined offset of the time slot to the determined transmission timing advance (a503). A system and a base station for determining a data transmission offset are provided.

Abstract: A data transmission method and central controller for a distributed antenna system and a distributed antenna system. The system includes a central controller and multiple wireless transceiver units. The method includes that wireless transceiver units measure the power of the pilot reference signals received from user terminals and forward this power rate to a central controller; the central controller selects a set of wireless transceiver units for transmitting data to the terminal according to the pilot reference signal power rates of the terminals forwarded by the multiple wireless transceiver units; the central controller performs data processing according to said set of wireless transceiver units; the central controller distributes the processed data to the wireless transceiver units in said set of wireless transceiver units, and the wireless transceiver units in said set perform the downlink data transmission.

Abstract: 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.

Abstract: A method and device for multi-user detecting of an OFDM transmission signal are provided. The method includes: combining received signals, at corresponding time-frequency symbol positions in all of multiple repeated Block Units in relation to the same data symbol, into a received data sequence; determining a combined repeated channel response sequence array corresponding to the received data sequence; and detecting the received data sequence using the combined repeated channel response sequence array to obtain data symbols of multiple users. 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.

Abstract: 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.

Abstract: A method includes: sending, by an RNC, MBMS data to base stations of the target cells or sectors, distributing the same time and frequency resources, scrambling code and midamble to the cells or sectors to transmit the MBMS data, sending information of the distributed resources, scrambling code and midamble to the base stations and UEs of the target cells or sectors; and rotating, by each of the base stations, the MBMS burst signal to be sent by a random phase, sending the rotated signal to the UE using time and frequency resources distributed by RNC. A system includes an RNC, base stations and a UE, and each of the base stations includes a phase processing module and a signal sending module.

Abstract: A method, system, base station and User Equipment for processing reference symbols is provided to support the transmission of both common reference symbols and user-specific reference symbols. In the present invention, a transmitting end configures the reference symbol structure for a downlink subframe according to the number of the used antenna; the transmitting end inserts the common reference symbols and the user-specific reference symbols to be transmitted into the downlink subframe according to the reference symbol structure and transmits them. With the user of the present invention, both the common reference symbols and the user-specific reference symbols can be transmitted.

Abstract: 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.

Abstract: 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.

Abstract: A method for a time division duplex mobile communication system comprises that setting a minimum unit of transmission time interval and a system frame structure, wherein each radio sub frame is composed of a downlink pilot time slot, a switching guard period, a synchronization time slot and a plurality of service time slots, and the transmission time interval uses the length of time slot as a unit; a user obtaining downlink synchronization by receiving downlink pilot information of the downlink pilot time slot, and obtaining corresponding configuration information of cell by reading cell broadcasting information, and then transmitting uplink synchronization information in the synchronization time slot to fulfill a random access process, wherein the configuration information includes transmission time interval and system frame structure information; the network side/the user transmitting call information to an opposite end, and the opposite end processing call acknowledgement according to the transmission time

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.