Patent application number | Description | Published |
20100265910 | METHOD, SYSTEM AND APPARATUS FOR ASSIGNING PILOT RESOURCES - 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. | 10-21-2010 |
20110105167 | Method for Transmitting and Receiving Uplink Sounding Reference Signal, Base Station and Mobile Terminal - The field of wireless communications is related, especially the technique of transmitting uplink sounding reference signal (SRS) by a mobile terminal with multiple transmission antennas is related. A method for receiving uplink sounding reference signal includes the following steps: receiving the SRS signals, which are respectively transmitted from respective radio frequency transmission modules of the mobile terminal according to the respectively allocated Transmission Comb (TC) values and Cyclic Shift (CS) values when the transmission period arrives, wherein TC values and/or CS values allocated for any two radio frequency transmission modules are different; determining the radio frequency transmission module corresponding to every received SRS signal according to the TC values and CS values respectively allocated for respective radio frequency transmission modules. A device for receiving uplink sounding reference signal, a method and a device for transmitting uplink sounding reference signal are also provided. Because different TC values and/or different CS values are allocated for respective radio frequency transmission modules, (multiple) radio frequency transmission modules can transmit SRS signals through (multiple) transmission antennas during the same transmission period by way of Frequency Division Multiplex (FDM) or Code Division Multiplex (CDM). | 05-05-2011 |
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 |
20120113852 | METHOD AND DEVICE FOR CONFIGURING AND SENDING DOWNLINK CSI REFERENCE SIGNAL - A method for configuring and sending a downlink CSI reference signal is provided. The method comprises: an eNB configures the downlink CSI reference signal and sends configuration information of the downlink CSI reference signal to a UE, wherein the configuration information comprises a starting subframe number and/or a cycle of the downlink CSI reference signal; the eNB sends the downlink CSI reference signal to the UE according to the configuration information of the downlink CSI reference signal. | 05-10-2012 |
20120122468 | Method and Device for Coordinated Scheduling - Disclosed in the present invention is a coordinated scheduling method which includes that: a base station establishes the correspondences between sub-bands and spatial information, and communicates the correspondences between sub-bands and spatial information with the base station of a cooperative cell ( | 05-17-2012 |
20120122507 | Method And Device For Performing Space Coordination Among Cells - A method and a device for performing space coordination among cells are disclosed in the present invention, and the method includes that a base station in a serving cell acquires the channel information of a terminal; the base station in said serving cell performs pre-scheduling to said terminal, according to the acquired channel information of said terminal and the service requirement of said terminal; the base station in said serving cell transfers the pre-scheduling information to the base station in said coordinated cell, so that the base station in said coordinated cell performs coordinated scheduling/coordinated beam-forming with the base station in said serving cell together, according to said pre-scheduling information. With the solution of the present invention, the pre-scheduling information is transferred between base stations in various coordinated transmission cells, and the coordinated scheduling/beam-forming is performed according to the pre-scheduling information, thus, the coordinated scheduling/beam-forming is implemented with less amount of information exchange, and the spectrum efficiency of cell-edge terminal is improved. | 05-17-2012 |
20120129561 | Method, Device and System for Transmitting Sounding Reference Signals - The embodiments of the present invention disclose a method, device and system for transmitting Sounding Reference Signals (SRSs). The method includes the following steps: a user equipment receives the special SRS sequence information for Coordinated Multi-Point Operation (CoMP) from a base station equipment, and the base station equipment corresponds to a cell in a CoMP SRS cluster ( | 05-24-2012 |
20120188937 | METHOD, SYSTEM AND DEVICE FOR TRANSMITTING DEMODULATION REFERENCE SIGNAL AND DEMODULATING CHANNEL OVER BACKHAUL LINK - The present invention discloses a method on a Long Term Evolution-Advanced (LTE-A) system backhaul link for demodulation pilot transmission, wherein the method includes that: among the resource areas occupied by a Relay-Physical Downlink Shared Channel (R-PDSCH) on the backhaul link, a base station selects the resource units which are preconfigured for sending the demodulation pilot signal of the R-PDSCH; the base station sends the demodulation pilot signal to a Relay Node (RN) belonging to the base station by using the selected resource units. The present invention also discloses a channel demodulation method on the LTE-A system backhaul link, an LTE-A communication system and device. The demodulation performance of the R-PDSCH in the LTE-A system can be ensured with the present invention. | 07-26-2012 |
20120243448 | METHOD,SYSTEM AND DEVICE FOR SENDING UPLINK FEEDBACK INFORMATION - A method and device for acquiring user equipment duplex mode information are disclosed by the present invention, wherein, the method includes: the user equipment establishes a radio resource control connection with a base station, and reports the user equipment duplex mode information when establishing the radio resource control connection. With the technical scheme provided in the embodiments of the present invention, the network side acquires the duplex mode of the user equipment. | 09-27-2012 |
20120294250 | METHOD AND DEVICE FOR ALLOCATING DOWNLINK RESOURCE AND RECEIVING DOWNLINK DATA - A method and apparatus for allocating downlink resources and implementing downlink data reception in a broadband evolution system are disclosed in the present invention, so as to implement the allocation of resources in case of carrier resource expansion and implement the reception of downlink data in case of carrier resource expansion. A method for receiving downlink data includes that: emission bandwidth resources are divided into multiple frequency-domain Resource Blocks (RBs), and every frequency-domain Resource Block (RB) corresponds to an RB serial number, wherein the frequency-domain RBs corresponding to Release-8 (Rel-8) compatible frequency-domain resources are numbered in a numbering mode of a Long Term Evolution (LTE) system, and the frequency-domain RBs corresponding to incompatible frequency-domain resources are orderly numbered based on the largest serial number corresponding to the Rel-8 compatible frequency-domain resources; when receiving a downlink control signaling including RB serial numbers transferred from a network side, a broadband evolution terminal obtains frequency-domain RBs corresponding to the RB serial numbers, and can receive downlink data from the obtained frequency-domain RBs. | 11-22-2012 |
20120300709 | METHOD OF AND APPARATUS FOR MAPPING TO DEMODULATION REFERENCE SIGNAL PORT - A demodulation reference signal port mapping method is disclosed. The method includes: a base station communicates with a User Equipment (UE), and allocates corresponding data stream to the UE according to the attribution of the UE; the base station maps the corresponding data stream from a layer to a corresponding demodulation reference signal port; the base station transmits the corresponding data stream to the UE via demodulation reference signal port. By restricting the demodulation reference signal port mapping solution of rank=1 to rank=8 and the demodulation reference signal port mapping solution when the retransmission occurs, the technical solution enables the demodulation reference signal port mapping solution to compatible with the present system and to keep lower overhead of the demodulation reference signal. | 11-29-2012 |
20120307935 | METHOD AND DEVICE FOR TRANSMITTING/RECEIVING INFORMATION IN CLOSED-LOOP MULTI-ANTENNA SYSTEM - The present invention discloses a method for transmitting information in a closed loop multiple antenna system. The method includes that: a transmission apparatus receives information transmitted from a reception apparatus, wherein the information includes codeword index information; the transmission apparatus selects a corresponding codeword from a double-layer-structure-based codebook according to the codeword index information; the transmission apparatus generates a precoding matrix according to the selected codeword; the transmission apparatus performs precoding for data to be transmitted according to the precoding matrix; the transmission apparatus transmits the precoded data to the reception apparatus. The present invention can enable a formed and used codebook to match channel distribution characteristic of a dual-polarized antenna as much as possible, and minimize performance loss brought by codebook quantization, thereby performance of a precoding system can be effectively improved. | 12-06-2012 |
20130022087 | METHOD, APPARATUS AND SYSTEM FOR CONFIGURING DEMODULATION REFERENCE SIGNAL - A method, an apparatus and a system for configuring a Demodulation Reference Signal (DMRS) are disclosed in the present invention. The method includes: receiving a DMRS indication index transmitted from a network side; determining at least one port used for the local transmission of the DMRS; acquiring the predetermined DMRS configuration parameters corresponding to the DMRS indication index and the at least one port, and configuring, according to the DMRS configuration parameters, the DMRS to be transmitted from the at least one port. Therefore, the terminal can implement the configuration of the DMRS without reloading the corresponding configuration information. Thus, the implementation complexity of the DMRS configuration flow is decreased, and the operation load of the terminal is also reduced. | 01-24-2013 |
20130034010 | METHOD AND DEVICE FOR REPORTING ANTENNA CALIBRATION INFORMATION AND DETERMINING ANTENNA CALIBRATION FACTOR - A method and device for reporting antenna calibration information and determining antenna calibration factor are provided by the present invention. When reporting the antenna calibration information, a user equipment (UE) estimates the downlink equivalent baseband channel from a plurality of antennas of the base station to the UE; according to the equivalent baseband channel, determines the amplitude response and delay value to be reported, and then reports the amplitude response and delay value to the base station. When determining the antenna calibration factor, according to the uplink signal sent by the UE on the base station-directed time-frequency resources, the base station determines the amplitude response and the delay value; according to the amplitude response and delay value reported by the UE and according to the amplitude response and delay value determined by the uplink signal, the base station calculates the antenna calibration factor. Because the UE pre-processing process is added, the sensitivity degrees to the channel estimation error and to the channel Doppler extension are reduced. | 02-07-2013 |
20130034179 | Multi-Antenna System and Method for Transmitting and Receiving Information in Multi-Antenna System - Embodiments of the present invention provide a method for transmitting information in a multi-antenna system. The method may include: a transmitting end receives information transmitted by a receiving end, wherein the information includes information of index of a precoder; the transmitting end selects a precoder from a two-layered codebook based on the information of the index of the precoder; the transmitting end precodes to-be-transmitted data by using the precoder; the transmitting end transmits the precoded data to the receiving end. The technical scheme of the present invention obtains codebooks most matching with channel distribution characteristics of dual-polarized antennas and minimizes performance loss brought by codebook quantization to remarkably improve the performances of precoding systems. | 02-07-2013 |
20130039304 | METHOD FOR SENDING SOUNDING REFERENCE SIGNALS (SRS), TRIGGER METHOD AND DEVICE THEREOF - The present invention discloses a method for triggering the sending of Sounding Reference Signals (SRS), a method for sending the SRS and an device thereof. The method for triggering the sending of SRS includes that a base station sends a downlink transmission scheduling signal to the user equipment (UE), wherein the signal carries the indication information for instructing the UE to send the SRS. By adopting the present invention, one or a plurality of UEs can be triggered by one piece of physical downlink control channel (PDCCH) signal to send the SRS. | 02-14-2013 |
20130044624 | METHOD AND APPARATUS FOR REPORTING CHANNEL STATE INFORMATION (CSI) BASED ON PHYSICAL UPLINK SHARED CHANNEL (PUSCH) - A method and apparatus for reporting channel state information (CSI) based on a physical uplink shared channel (PUSCH) are used to realize correct reporting of the CSI based on double code books. The method includes the following steps: a reporting mode configuration signaling for the CSI sent from a network side is received, and said reporting mode configuration signaling for the CSI at least carries a designated reporting mode identifier; a first CSI aiming at the whole bandwidth of a system is established according to a reporting type corresponding to said reporting mode identifier; the whole bandwidth of the system is divided into at least two frequency band subclasses, and a second CSI aiming at a designated frequency band subclass is established according to the reporting type corresponding to said reporting mode identifier; and when a reporting indication signaling sent from the network side is received, said first CSI and said second CSI are transmitted to the network side. Therefore, when a user equipment (UE) reports the CSI, a long-term/wideband CSI and a short-term/frequency selective CSI could be considered comprehensively, then a two-level feedback mechanism based on the PUSCH double code books is realized. | 02-21-2013 |
20130100896 | METHOD AND DEVICE FOR TRANSMITTING APERIODIC SOUNDING REFERENCE SIGNAL (SRS) - Embodiments of the present invention disclose a transmission method and device for aperiodic Sounding Reference Signal (SRS). By applying the technical solution of the embodiments in the present invention, a Base Station (BS) performing semi-static configuration of the aperiodic SRS on a mobile terminal through higher layer signaling to decrease signaling overhead. On the one hand, different sub-frames can be set with different or the same Cycle Shift (CS) and resource positions to increase the flexibility of system setting; On the other hand, aperiodic SRS may be transmitted in a plurality of sub-frames to reduce system delay and increase detection bandwidth. Moreover, the relatively flexible timing mode can be set in the terminal without bringing too many limits on the scheduling. | 04-25-2013 |
20130288697 | Method and Apparatus for Allocating Radio Resources in Cellular Communications Network - The invention relates to a method and apparatuses for allocating radio resources in a cellular communications network including the steps of: dynamically allocating a set of radio resources for a transmission taking place at a transmission time instance and for a further transmission taking place at a further transmission time instance, the further transmission relating to a response to the transmission taking place at the transmission time instance, and broadcasting both sets of allocated radio resources in the cellular communications network. | 10-31-2013 |
20130303180 | Multi-Channel State Information Feedback with Cell-specific Adaptive Granularity - It is described a user equipment for a cellular communication network providing a plurality of cells, the user equipment including a receiver unit for receiving a first and second transmissions via a first and a second communication channel. The first communication channel uses a first cell and the second communication channel uses a different, second cell of said plurality of cells. A feedback unit is configured for providing a first and second channel state information feedback components for the respective communication channels with a separate, cell specific granularity. Further described is a base station of the cellular communication network. | 11-14-2013 |
20130308563 | METHOD, SYSTEM AND DEVICE FOR ADAPTIVE MODULATION AND CODING - An adaptive modulation and coding method includes selecting punctured Physical Resource Blocks (PRBs) to transmit downlink data for User Equipment (UE); determining Transport Block Size (TBS) and number of punctured PRB pairs for transmission to the UE based on the carried service; scheduling downlink data for the UE based on determined TBS, and transmitting the number of used punctured PRB pairs and a Modulation and Coding Scheme (MCS) sequence number to the UE; and the UE converting number of the punctured PRB pairs to number of normal PRB pairs, determining modulation scheme and TBS sequence number based on the MCS sequence number, and determining TBS of the downlink data based on number of normal PRB pairs and TBS sequence number. | 11-21-2013 |
20140307631 | Feedback Messaging - The disclosure relates to methods and apparatuses for feedback messaging in a communication system. A station can include into a scheduling information entity an indication of aperiodic feedback messaging on a physical uplink control channel and dynamically send the scheduling information entity with the indication to a communication device configured for periodic feedback messaging to trigger aperiodic feedback messaging by the communication device on the physical uplink control channel. Upon receiving the scheduling information entity the device can determine that it includes the indication and in response to the determining send at least one aperiodic feedback message on the physical uplink control channel. | 10-16-2014 |
20150049615 | Received Signal Quality Measurement Triggering and Reporting - An apparatus and method provide received signal quality measurement management triggering and reporting. Specifically, a received signal quality range is defined including a best received signal quality as upper border, which is the best received signal quality in a radio resource management measurement among all received signal qualities measured in a received signal quality measurement procedure. The, a report is processed which includes a predetermined number of signal originating points providing a received signal quality at a reference location within the defined received signal quality range. | 02-19-2015 |