PROBLEM TO BE SOLVED: To provide a cooperative communication method between a plurality of base stations, and a base station.SOLUTION: The cooperative communication method between base stations comprises: a first step in which a serving base station determines whether a user device enters a cooperative communication mode between the base stations; a second step in which the serving base station performs allocation of the user device using a downlink control signal; a third step in which the user device acquires system information and channel status information of the serving base station and the cooperative communication base station indicated by received allocation information; a fourth step in which the user device feeds back the channel status information of the downlink channel between the user device and the serving base station and the cooperative communication base station; a fifth step in which the serving base station performs resource scheduling and background communication on the basis of the channel status information fed back; and a sixth step in which the user device receives a distribution instruction of the downlink resource.

The invention relates to a radio resource control (RRC) state converting method, a base station (eNB) and user equipment (UE). The eNB comprises a transmitting/receiving unit, a calculating unit, an execution determining unit, a request unit, and a precise determination unit, wherein the transmitting/receiving unit is used for performing data communication with an MBMS UE in a cell; the calculating unit is used for calculating the current available RRC connection number of a system; the performing confirmation execution determining unit is used for determining whether RRC state conversion of the MBMS UE needs to be performed according to the current available RRC connection number of the system and a connection number threshold value; the request unit is used for transmitting a measurement report request to all MBMS UE in the cell through the transmitting/receiving unit when the execution determining unit determines that the RRC state conversion of the MBMS UE needs to be performed; and the precise determination unit is used for determining a precise reference measured threshold value of a parameter according to the connection number threshold value and parameter measurement data received by the transmitting/receiving unit and reported by the MBMS UE, and transmitting the precise reference measured threshold value to the all MBMS UE in the cell through the transmitting/receiving unit.

The invention provides an interference overload instruction generating device and method, and a base station device for an uplink frequency division multiplexing cellular telecommunication system. The base station comprises an interference overload instruction triggering sub-system (1000), an interference overload instruction generating sub-system (2000) and a transceiver sub-system (3000). The interference overload instruction triggering sub-system (1000) is used for firstly judging whether triggering conditions of an interference instruction are met; only when the conditions are met, the interference overload instruction triggering sub-system (1000) is triggered to operate the interference overload instruction generating sub-system (2000) so as to reduce signaling cost of the interference instruction; and for further reducing signaling cost, methods of adopting differential encoding, state encoding and bit table and the like are offered to generate and send an interference instruction signaling. The invention has the characteristics of simple triggering mechanism for the interference instruction, and lower signaling cost of the interference instruction, and the like.

Provided is a method for the coexistence of transparent transmission and non-transparent transmission of a relay node. More specifically, in frequency-division multiplexing, a transparent transmission mode is used in a certain operating carrier frequency bandwidth, and a non-transparent transmission mode is used in another certain operating carrier frequency bandwidth. In time-division multiplexing, the relay node operates in the transparent mode in multiple sub-frames, and operates in the non-transparent mode in the other multiple sub-frames. By use the method by which the transparent transmission and non-transparent transmission of the relay node coexist, the cost required for a system can be effectively reduced.

The invention provides a descending reference signaling transport method, which is applied on a wireless communication system having both LTE UE and LTE-A UE, and comprises the following steps: a system bandwidth is divided into a plurality of basic bandwidths, at least one LTE compatible basic bandwidth is defined, and the configuration of the basic bandwidth is reported to all the UE by broadcasting signaling; according to an FEM mode or a combination mode of FDM and resources reservation, the system RB is divided into LTE RB and LTE-A RB; RB resources are allocated to LTE UE and LTE-A UE according to the scheduling algorithm, and different pilot frequency modes are inserted into all the RB according to the types of RB and the types of the allocated RB; and RB is transmitted and scheduled, and the type of the scheduled RB is reported to UE by the high-level signaling or a physical descending control channel. The invention has the characteristics of less signaling cost and flexible realization, and under the premise of being compatible for the prior LTE mechanism, the invention successfully solves the coexistence problem of LTE-A UE and LTE UE in the wireless communication system of the next generation. The invention also provides a base station, user equipment and a wireless communication system.

The invention provides an L multi-antenna relay station and a power control method thereof. Particularly, the relay station comprise a receiving device, a transmitting device, an information acquisition device, a route user equipment selecting device and a power control device. The receiving device is used for receiving down receiving signals from a base station and up receiving signals from user equipment; the transmitting device is used for transmitting up transmitting signals to the base station and down transmitting signals to the user equipment; the information acquisition device is used for conducting down link synchronization with the base station to acquire relevant information of the base station and control information of all user equipment in a servo small area of the base station; the route user equipment selecting device is used for determining a set of user equipment which decides to use the relay station for transitroute on the basis of a large scale fading rule or a signal to noise ratio rule; and the power control device is used for conducting power control on the user equipment in the set of the decided user equipment and partially or completely compensating the large scale fading between the relay station and the base station.

The invention discloses a method and a device that are used for self-adaptive CRC checking in wireless links and used in the technical field of wireless transmission. The self-adaptive CRC checking method and device judge link states according to link channel quality indicating (CQI) information, user equipment movement speed information, NACK indicating statistical information and transmission data block length information, etc.; a CRC checking scheme based on transmission blocks is adopted for links in good state, and the error detection and the retransmission adopt the unit of a data transmission block; a CRC checking scheme based on code blocks is adopted for links in bad state, and the error detection and the retransmission adopt the unit of a code block. Emitters and receivers switch link state information in an explicit or implicit way. The self-adaptive CRC checking method and device can realize self-adaptive CRC checking according to link states, find balance between system cost and retransmission efficiency, and improve system transmission efficiency.

The invention provides an open loop MIMO method, base station and user device based on Direction Of Arrival (DOA) utilized in a radio transmission technical field. The user devices are classified, based on the operation speeds thereof, into low-speed, middle-speed and high-speed user devices. It is then arranged that a closed loop MIMO mode be employed for the low-speed user devices, while an open loop MIMO mode be employed for the middle-speed and high-speed user devices. A pre-coding matrix index number (PMI) of a transmission link is estimated, based on a DOA of a feedback link measured and acquired by a transmitting terminal, to decide a rank of MIMO system. A MIMO transmission scheme is then decided based on the PMI and rank. The MIMO scheme and rank are then transmitted to a receiving terminal. The receiving terminal detects the MIMO scheme and rank and transmits feedback information based on the detected information. The invention can provide a system and apparatus for open loop MIMO based on DOA, which system and apparatus are simple to design and exhibit excellent system performances for the middle-speed and high-speed user devices.

The invention provides a method for reducing inter-cell interference in an upper cellular system and a base station applying the method. Firstly, a resource coordination method is executed among the base stations to divide recourse into a resource block subclass; then an interference overload indication method is determined among the base stations, and a disturbed threshold is determined for the resource; then, the base stations carry out the interference overload indication method based on the resource block subclass later; and when receiving an interference overload indication, the base station carries out control strategy to user equipment which uses the resource block subclass recently according to the nature of the interference overload indication and the resource block subclass, so as to achieve the purpose of retraining the interference. The control strategy comprises reduced power, resource usage restriction, transposition of the user equipment in the resource coordination method, refused interference overload indication, adjusted disturbed threshed, adjusted resource coordination method and the like. The invention effectively reduces the intra-cell interference, and has the advantages of less communication signaling cost among the base stations, stronger interference suppression pertinence and flexible, various control methods and the like.

The invention provides a method used for optimizing the upstream reference signal multiplex of a cellular communication system. The method includes the following steps: firstly, the interruption coordination is carried out between base stations and the frequency spectrum resource is divided into frequency spectrum resource block subsets, and different permissions of user equipment for using the subsets are determined; then the base station leads each user equipment to adopt the frequency hopping manner so as to lead the upstream reference signal to just cover the frequency spectrum resource to which the users can get access; and the frequency hopping manner of the upstream reference signal and the jumping manner of sequence are optimized. The control signaling of the method used for optimizing the upstream reference signal multiplex includes the signaling such as frequency spectrum covering scope, frequency hopping manner of the upstream reference signal, the jumping manner of the upstream reference signal sequence and the like. Moreover, the invention also provides a base station which adopts the method for optimizing the upstream reference signal multiplex.

The invention provides an interference coordination method for an uplink frequency division multiplexing cellular communication system, which is used for combining interference overload indication and strong interference indication. The interference coordination method comprises the following steps that: a base station, according to related parameters of user equipment, judges the situation that the user equipment is interfered and/or the situation that the user equipment interferes other cells, and performs the coordination of spectral resources; the base station sets at least one of interference overload indication threshold, sending direction of the interference overload indication and/or the strong interference indication, frequency bands of the interference overload indication and the strong interference indication, trigger mechanism of the strong interference indication, and replacement mechanism between the interference overload indication and the strong interference indication to realize the mutual combination of the interference overload indication and the strong interference indication; and the base station executes the interference overload indication and the strong interference indication according to the preset related parameters. The method has the advantages of better interference coordination effect, stronger response ability to burst interference and the like. In addition, the invention also provides the base station for realizing the interference coordination method.

A base station calculates the size of sub-bands on the basis of a system bandwidth and divides the sub-bands. The base station selects some of the sub-bands, forms the selected sub-bands into a sub-band set, assigns the sub-band set to a user equipment (UE), and reports information associated with the sub-band set to the user equipment (UE). The user equipment (UE) recalculates the size of the corresponding sub-bands and the number of sub-bands used for feedback on the basis of the size of the assigned sub-band set. Moreover, the user equipment (UE) divides the sub-band set into the corresponding sub-bands and feeds back information associated with a predetermined number of sub-bands to the base station according to the result of the calculation. The base station performs the optimization of a transmitter according to the information fed back by the user equipment (UE), thereby realizing an object to improve the efficiency of the system on the assumption that the service quality of a radio cell is ensured.