Abstract:
A method, system and device for wireless communication are provided by the present invention. The method includes that: from the ending of the Transmit-Receive Guard interval (TRG) to the beginning of the Receive-Transmit Guard interval (RTG), an evolved Node B (eNB) carries Common Reference Signals (CRSs) or Demodulated Reference Signals (DMRSs) on the carriers are used for transmitting data signals and/or control signals to a Relay Node (RN); the RN demodulates, according to the CRSs or the DMRSs, the signals transmitted by the eNB; the TRG is the guard interval of the transition, for the RN, from transmitting signals to receiving signals over the backhaul link, and the RTG is the guard interval of the transition, for the RN, from receiving signals to transmitting signals over the backhaul link. The application of the present invention enables the RN to receive the data signals and/or control signals transmitted by the eNB correctly.
Abstract:
A method for controlling the downlink transmission and a device for the signal associated processing in the coordinated multi-point transmission system are provided, which relate to the mobile communication technology, for optimizing the downlink transmission control in the coordinated multi-point transmission system. The embodiment aims at the coordinated multi-point transmission system, and in the base station side according to the SINR1 level of the frequency domain resource block fed back by the user, the mating result of the user, the associated resource allocation result and the pretreatment weight value result, determines the Modulation and Coding Scheme (MCS) level of the scheduled user channel to provide the accuracy of the MCS level, thus optimizing the downlink resource configurations, further increasing the throughput of the system.
Abstract:
A method of wideband radio transmission is disclosed, the method includes the following steps: obtaining the parallel data symbols; encoding the obtaining parallel data symbols respectively; superposing the encoded data symbols; performing the fast Fourier inverse transform for the superposed data symbols and transmitting them. Applying the solution, the transmission efficiency and the transmission dependability of the OFDM system is raised. An apparatus for wideband radio transmission and a transmission system are also disclosed.
Abstract:
Disclosed in embodiments of the present invention are a CSI-RS transmission method, an inspection method and a device thereof. The transmission method comprises: transmitting a CSI-RS via any downlink subframe other than a special subframe, a downlink subframe transmitting a control message, or a downlink subframe transmitting a system message. Embodiments of the present invention enable the CSI-RS to be prevented from conflicting with the control message, the system message, and a message carried by the special subframe.
Abstract:
Disclosed in embodiments of the present invention are a CSI-RS transmission method, an inspection method and a device thereof The transmission method comprises: transmitting a CSI-RS via any downlink subframe other than a special subframe, a downlink subframe transmitting a control message, or a downlink subframe transmitting a system message. Embodiments of the present invention enable the CSI-RS to be prevented from conflicting with the control message, the system message, and a message carried by the special subframe.
Abstract:
A method and device for determining an antenna cooperation set, and a method and device for determining a base station cooperation set in the mobile communication field are provided. The method includes that a signal joint processing system obtains the channel quality between a mobile terminal and at least two base stations, determines the base stations, which are corresponding to the channel quality higher than the channel quality threshold, as the cooperation base station set of the mobile terminal. Because the channel quality between the mobile terminal and the antenna of each base station is used to determine the cooperation antenna set dynamically, therefore, the determined cooperation antenna set includes the antennae that have very strong interference to the mobile terminal, or the antennae that have been strongly interfered by the mobile station. By performing signal joint processing to the antennae, signal interference among adjacent cells can be reduced, better accuracy for detecting mobile terminal signals can be obtained, the accuracy for receiving signals by the mobile station is improved, and namely the communication quality between the mobile terminal and the base stations is improved.
Abstract:
A method, a communication device for transmitting data in a communication system, and the communication system. The method includes: detecting the current channel quality; determining the overlapping coding times corresponding to the detected channel quality according to the corresponding relation between the channel quality and the overlapping coding frequency; performing coding operation of overlapping coding multiplexing technique to the data which is to be transmitted using the determined overlapping coding times and transmitting the coded data. The method improves the reliability of data transmission under the circumstance of channel quality being relatively poor, and improves the transmission efficiency, avoids the resource waste under the circumstance of channel quality being better.
Abstract:
A method, a device and a system for indicating terminal specific Demodulation Reference Signal (DMRS) are provided by the invention. The method includes that: a network side creates signal indicating information, and sends the created signal indicating information to a terminal (S501); the terminal, according to Transmission Block (TB) indicating information of the TB and multiple bits control information which are included in the signal indicating information, confirms DMRS pattern information, antenna port information and a scrambling ID of a reference signal sequence (S502) allocated for itself. The method, the device and the system provide by the invention, compared to the prior art, reduce signaling overhead which indicates the terminal specific DMRS, thus reducing resources waste of the system.
Abstract:
A method, an apparatus and a system for sending Sounding Reference Signal (SRS) and a method, an apparatus and a system for receiving SRS are disclosed in the present invention, which are used to reduce the requirement for Time Frequency Code (TFC) resource during the process of sending the SRS, and meanwhile to ensure the precision of channel information estimation. The method includes the steps of: determining a first frequency band required by sending the SRS, and determining a second frequency band whose width is smaller than the width of the first frequency band; according to the mode that the average interval for sending the SRS on the first frequency band is larger than the average interval for sending the SRS on the second frequency band, respectively sending the SRS on the first frequency band and the second frequency band.
Abstract:
A method and device for determining an antenna cooperation set, and a method and device for determining a base station cooperation set in the mobile communication field are provided. The method includes that a signal joint processing system obtains the channel quality between a mobile terminal and at least two base stations, determines the base stations, which are corresponding to the channel quality higher than the channel quality threshold, as the cooperation base station set of the mobile terminal. Because the channel quality between the mobile terminal and the antenna of each base station is used to determine the cooperation antenna set dynamically, therefore, the determined cooperation antenna set includes the antennae that have very strong interference to the mobile terminal, or the antennae that have been strongly interfered by the mobile station. By performing signal joint processing to the antennae, signal interference among adjacent cells can be reduced, better accuracy for detecting mobile terminal signals can be obtained, the accuracy for receiving signals by the mobile station is improved, and namely the communication quality between the mobile terminal and the base stations is improved.