Patent application number | Description | Published |
20110207419 | METHOD AND APPARATUS FOR DETERMINING TRANSMIT POWER - A method and an apparatus for determining transmit power are disclosed. The method includes: determining an E-DPDCH gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data; and determining transmit power of E-DPDCH according to the E-DPDCH gain factor in compressed mode. The E-DPDCH gain factor in compressed mode is determined according to the number of E-DPDCH required for initial transmission of data, and therefore, the E-DPDCH gain factor in compressed mode is determined accurately, the transmit power of E-DPDCH is determined accurately according to the E-DPDCH gain factor, the waste of transmit power of E-DPDCH is reduced, and therefore the system capacity is improved. | 08-25-2011 |
20110235731 | METHOD AND SYSTEM FOR MULTIPLE-INPUT MULTIPLE-OUTPUT MODE CONTROL - A method and system for Multiple-Input Multiple-Output (MIMO) mode control are provided. The method includes: receiving signaling sent by a network side, where the signaling includes uplink MIMO control information; and controlling an uplink MIMO mode according to the uplink MIMO control information. After an uplink MIMO is introduced to a communication system, the uplink MIMO mode can be controlled to switch freely among start, stop, and continuation through a mechanism corresponding to an operation of a downlink MIMO mode. | 09-29-2011 |
20110305204 | INFORMATION TRANSMISSION METHOD AND APPARATUS - Embodiments of the present invention provide an information transmission method and apparatus. The method includes: encoding an information bit sequence corresponding to data stream control information and Precoding Control Indication (PCI) information to obtain a code sequence; and sending the code sequence to a NodeB by carrying the code sequence on a Physical Uplink Control Channel (PUCCH). With the present invention, a User Equipment (UE) in a macro diversity state feeds back PCI information to the NodeB of the non-serving cell in time. | 12-15-2011 |
20120002624 | COMMUNICATION METHOD AND SYSTEM USING UPLINK MULTIPLE INPUT MULTIPLE OUTPUT TECHNOLOGY - The present invention discloses a communication method and system using MIMO technology. The communication method includes: a network side device determines whether a UE uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and the network side device notifies the UE of indication information indicating the determined uplink data transmission mode. The communication method and system help the UE to use a specific uplink data transmission mode in combination with various factors, therefore reducing a delay of an uplink data transmission, improving an uplink data transmission speed, thereby meeting development needs of uplink high-speed data communication services of the UE. | 01-05-2012 |
20120002658 | Signal Encoding Method and Device, Method for Encoding Joint Feedback Signal - A signal encoding method and device and a method for encoding a joint feedback signal are provided. The signal encoding method includes the following steps. When two carriers are configured with multiple-input and multiple-output (MIMO), Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) signals of the two carriers are combined into a joint feedback signal. The joint feedback signal is mapped into a codeword according to a predetermined mapping relationship between signals and codewords. Therefore, through the method for combining and encoding feedback signals of two carriers for transmission on a code channel in a dual cell (DC)-MIMO mode, bit error ratio (BER) and detection error cost are decreased, power overhead is saved, and a cubic metric (CM) value of the system is not affected, thereby enhancing the performance of the system. | 01-05-2012 |
20120002749 | METHOD AND APPARATUS FOR ENCODING FEEDBACK SIGNAL - A method and apparatus for encoding feedback signal is provided. The method includes: encoding feedback signals of three carriers to output a bit sequence; and transmitting the bit sequence on a High Speed-Dedicated Physical Control Channel (HS-DPCCH). The encoding the feedback signals of the three carriers may specifically include: mapping the feedback signals of the three carriers into a codeword, in which the codeword can be selected from a codebook, and codewords in the codebook satisfy a particular code distance relationship. The method for jointly encoding feedback signals of three carriers in a Ternary Cell (TC) mode is provided. Feedback signals are transmitted over a single code channel. Therefore, power overhead is reduced, and system performance is improved. | 01-05-2012 |
20120008520 | METHOD AND APPARATUS FOR DETERMINING TRANSMIT POWER - A method and an apparatus for determining transmission power are disclosed. A gain factor of an E-DPDCH in a compressed mode is determined according to the number of E-DPDCH used for initial transmission of data; and the transmission power of the E-DPDCH is determined according to the gain factor of the E-DPDCH in compressed mode. As the gain factor of E-DPDCH in compressed mode is determined according to the number of E-DPDCH for initial transmission of data, the gain factor of the E-DPDCH in compressed mode can be determined accurately, and thus the transmit power of the E-DPDCH can be determined accurately according to the gain factor of the E-DPDCH. Therefore, the waste of transmit power of the E-DPDCH is reduced, and thus the system capacity is improved. | 01-12-2012 |
20120008609 | METHOD AND COMMUNICATION DEVICE FOR FEEDING BACK AND RECEIVING PRE-CODING CONTROL INDICATION INFORMATION - The present invention relates to the field of wireless network communications, and provides a method and a device for receiving and sending Pre-coding Control Indication (PCI) information in uplink Multiple-Input Multiple Output (MIMO) transmission or uplink Closed Loop Transmit Diversity (CLTD) transmission, so as to solve a problem that the uplink MIMO communication from a terminal to a Base Station (BS) is unable to be realized in the prior art. A BS transmitting method includes carrying a code sequence, which represents PCI information, in a feedback channel of a BS. The beneficial effect of the present invention is: by feeding back the PCI information, the terminal realizes the maximization of a block length supported by an existing channel condition after the uplink MIMO is introduced, so as to improve an uplink transmission rate. | 01-12-2012 |
20120039294 | METHOD AND DEVICE FOR SWITCHING - A switching method and device are disclosed by the present invention. The switching method according to the embodiments of the present invention includes: receiving from a base station a switching indication information that requires a UE to switch a TTI; sending to the base station a switching confirmation information with which the switching indication information is confirmed; and switching the TTI. The switching method according to the embodiments of the present invention includes: sending to a UE a switching indication information that requires the UE to switch a TTI; and receiving from the UE a switching confirmation information with which the switching indication information is confirmed. By using the switching method and device according to the embodiments of the present invention, the delay of switching the TTI can be shortened and the TTI can be switched quickly. | 02-16-2012 |
20120039327 | POWER CONTROL METHOD AND DEVICE - A power control method and device are used for achieving transmit power control of a User Equipment (UE) in a multi-carrier mode. The power control method includes: calculating a transmit power of a UE when the UE sends data through a plurality of carriers; and performing power compression on each carrier either step by step according to property parameters of each carrier or synchronously according to a compression ratio, when the transmit power of the UE exceeds a preset maximum transmit power. A power control device is further provided. | 02-16-2012 |
20120044798 | Data Retransmission Method and User Equipment - Embodiments of the present invention provide a data retransmission method and user equipment, where the method includes: if a network indicates switching from a dual stream transmission mode to a single stream transmission mode, stopping data transmission of one data stream and clearing data in an HARQ process of the stopped data stream; or if a network indicates switching from a single stream transmission mode to a dual stream transmission mode, transmitting retransmission data in an HARQ process of the original data stream without changing the HARQ process number, and transmitting new data in the HARQ process of a new data stream; or using the retransmission data of the original data stream as new data to transmit in the HARQ process of either the original data stream or new data stream. | 02-23-2012 |
20120057544 | METHOD, DEVICE, AND SYSTEM FOR MANAGING UPLINK CARRIER FREQUENCIES - A method for managing uplink carrier frequencies is provided, which is applicable to the field of communication. The method includes the following steps: A state switching response message sent by a UE is received, where the state switching response message includes a result of state switching performed by on a secondary uplink carrier serving cell; The result of the state switching is notified to a secondary uplink carrier non-serving cell in a secondary carrier active set through an RNC. A device and a system for managing uplink carrier frequencies are further provided. Through the method, device, and system provided in embodiments of the present invention, the uplink carrier frequencies are managed, so as to facilitate transmission of uplink data during multi-cell collaboration. | 03-08-2012 |
20120057554 | METHOD, DEVICE, AND SYSTEM FOR MANAGING UPLINK CARRIER FREQUENCIES - A method for managing uplink carrier frequencies is provided, which is applicable to the field of communication. The method includes the following steps: A state switching response message sent by a UE is received, where the state switching response message includes a result of state switching performed by on a secondary uplink carrier serving cell; The result of the state switching is notified to a secondary uplink carrier non-serving cell in a secondary carrier active set through an RNC. A device and a system for managing uplink carrier frequencies are further provided. Through the method, device, and system provided in embodiments of the present invention, the uplink carrier frequencies are managed, so as to facilitate transmission of uplink data during multi-cell collaboration. | 03-08-2012 |
20120071186 | METHOD AND APPARATUS FOR RANDOM ACCESS - A method and an apparatus for random access are provided. The method includes: receiving, by a User Equipment (UE), an access indication message including a UE identifier (ID) and a corresponding resource number (101); sending a Dedicated Physical Control Channel (DPCCH) preamble by using an uplink resource corresponding to the resource number and preset initial transmit power (102); and if it is determined that an acquisition indication is received, determining, by the UE, that an access succeeds (103). Therefore, the reliability of information transmission is ensured, the delay in an access process is reduced, and fast implementation of uplink search is ensured. | 03-22-2012 |
20120099548 | Method and Communication Device for Assigning Scheduling Grant - The present invention discloses a method and a communication device for assigning a scheduling grant. The method for assigning a scheduling grant includes: receiving a grant value, an E-TFCI offset value, and a data stream identifier corresponding to the E-TFCI offset value, where the E-TFCI offset value is determined by the Node B according to data transmitted by a mobile terminal through two data streams; determining, according to the grant value, a transport block size of the data stream identified by the data stream identifier in a current TTI; and determining a transport block size of the other data stream in the current TTI according to the transport block size and the E-TFCI offset value. in the embodiments of the present invention the MIMO technology may be applied to the HSUPA technology. | 04-26-2012 |
20120120895 | METHOD AND DEVICE FOR SWITCHING FROM DUAL STREAM TO SINGLE STREAM IN UPLINK MIMO MODE - Embodiments of the present disclosure provide a method for switching from a dual stream to a single stream in an uplink MIMO mode. The method includes: sending a scheduling command with a value of absolute grant being zero_grant to a secondary data stream; and after a preset time since the scheduling command takes effect, sending a switching command that instructs a terminal to switch from an uplink MIMO dual stream to an uplink MIMO single stream. Hence, the embodiments of the present disclosure help to reduce data loss, and meanwhile, to simplify the HARQ design for switching from an uplink MIMO dual stream to an uplink MIMO single stream. | 05-17-2012 |
20120147859 | Method and Apparatus for Random Access - Method and apparatus for random access are provided. A base station sends access control information to a UE. The access control information includes an identifier of the UE and an access control command. The UE obtains an access time slot and a preamble signature according to the access control information received from the bases station. Then the UE initiate, according to the access time slot and the preamble signature, a random access procedure with a preamble power ramping. With the embodiments of the present invention, time delay in random access procedures may be decreased so as to enable the UE to complete the uplink access as quickly as possible and provide a feedback for a downlink transmission. Therefore efficiencies of the downlink transmission are enhanced. | 06-14-2012 |
20120294217 | METHOD AND APPARATUS FOR DETERMINING TRANSMIT POWER - A method and an apparatus for determining transmission power are disclosed. A gain factor of an E-DPDCH in a compressed mode is determined according to the number of E-DPDCHs used for initial transmission of data; and the transmission power of the E-DPDCH is determined according to the gain factor of the E-DPDCH in compressed mode. As the gain factor of E-DPDCH in compressed mode is determined according to the number of the E-DPDCHs for initial transmission of data, the gain factor of the E-DPDCH in compressed mode can be determined accurately, and thus the transmit power of the E-DPDCH can be determined accurately according to the gain factor of the E-DPDCH. Therefore, the waste of transmit power of the E-DPDCH is reduced, and thus the system capacity is improved. | 11-22-2012 |
20130329640 | METHOD AND APPARATUS FOR ENCODING FEEDBACK SIGNAL - A method and apparatus for encoding feedback signal is provided. The method includes: encoding feedback signals of three carriers to output a bit sequence; and transmitting the bit sequence on a High Speed-Dedicated Physical Control Channel (HS-DPCCH). The encoding the feedback signals of the three carriers may specifically include: mapping the feedback signals of the three carriers into a codeword, in which the codeword can be selected from a codebook, and codewords in the codebook satisfy a particular code distance relationship. The method for jointly encoding feedback signals of three carriers in a Ternary Cell (TC) mode is provided. Feedback signals are transmitted over a single code channel. Therefore, power overhead is reduced, and system performance is improved. | 12-12-2013 |
20130343349 | COMMUNICATION METHOD, DEVICE, AND BASE STATION APPLIED IN WCDMA SYSTEM - Embodiments of the present invention provide a communication method, a device, and a base station applied in a WCDMA system. The method includes sending downlink data with same timing via downlink carriers that are respectively configured in a first communication area, a second communication area, and a third communication area. The first communication area, the second communication area, and the third communication area are communication areas with every two thereof being adjacent to each other. The downlink carriers covered at edges of any two of the first communication area, the second communication area, and the third communication area have different frequencies. The communication areas serve as communication cells or communication sectors. | 12-26-2013 |
20140010198 | METHOD AND APPARATUS FOR DETERMINING TRANSMIT POWER - An apparatus is disclosed for determining a gain factor of an E-DPDCH in a compressed mode. In disclosure, the E-DPDCH gain factor in the compressed mode is determined according to the number of E-DPDCHs used for initial transmission of data. With the determined E-DPDCH gain factor, the transmission power of the E-DPDCH can be accordingly determined. As the E-DPDCH gain factor in compressed mode is determined according to the number of the E-DPDCHs for initial transmission of data, the gain factor of the E-DPDCH in compressed mode can be determined accurately, and thus the transmit power of the E-DPDCH can be determined accurately according to the E-DPDCH gain factor in the compressed mode. Therefore, the waste of transmit power of the E-DPDCH is reduced, and thus the system capacity is improved. | 01-09-2014 |
20140036883 | METHOD FOR POSITIONING CHANNEL BOUNDARY, USER TERMINAL, AND BASE STATION - The present disclosure is applicable to the field of communications, and provides a method for positioning a channel boundary and a base station, where the method includes: receiving cell timing difference information of a channel of a reference cell, and obtaining a boundary of a high speed-dedicated physical control channel (HS-DPCCH) through calculation according to the cell timing difference information; and obtaining a CQI sending time point of the HS-DPCCH and a reception time point of a high speed-shared control channel (HS-SCCH) through calculation according to the boundary of the HS-DPCCH. | 02-06-2014 |
20140092875 | POWER CONTROL METHOD AND DEVICE - A power control method and device are used for achieving transmit power control of a User Equipment (UE) in a multi-carrier mode. The power control method includes: calculating a transmit power of a UE when the UE sends data through a plurality of carriers; and performing power compression on each carrier either step by step according to property parameters of each carrier or synchronously according to a compression ratio, when the transmit power of the UE exceeds a preset maximum transmit power. A power control device is further provided. | 04-03-2014 |
20140105324 | Signal Encoding Method and Device, Method for Encoding Joint Feedback Signal - A signal encoding method and device and a method for encoding a joint feedback signal are provided. When two carriers are configured with multiple-input and multiple-output (MIMO), Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) signals of the two carriers are combined into a joint feedback signal. The joint feedback signal is mapped into a codeword according to predetermined mapping relationship between signals and codewords. Therefore, through the method for combining and encoding feedback signals of two carriers for transmission on a code channel in a dual cell (DC)-MIMO mode, bit error ratio (BER) and detection error cost are decreased, power overhead is saved, and a cubic metric (CM) value of the system is not affected, thereby enhancing the performance of the system. | 04-17-2014 |
20140141831 | METHOD FOR CONTROLLING POWER OF UPLINK MULTIPLE-INPUT MULTIPLE-OUTPUT CHANNEL, AND USER EQUPMENT - Embodiments of the present invention disclose a method for controlling power of an uplink multiple-input multiple-output channel, and a user equipment that are used to support an uplink MIMO application scenario and implement control of transmit power of a UE. The method in the embodiments of the present invention includes: when total transmit power of a user equipment UE is greater than maximum allowed transmit power, performing, by the UE, power reduction for an uplink multiple-input multiple-output MIMO channel on which a main data transmission block and a secondary data transmission block are sent, so that the total transmit power of the UE after the reduction is less than or equal to the maximum allowed transmit power. | 05-22-2014 |
20140171081 | Systems and Methods for Power Control in Wireless Networks - Embodiments are provided for adjusting a transmission power level at a user equipment (UE). An embodiment method by a network includes sending, to the UE, a first indication for a transmission power level. The transmission power level is for a transmission from the UE to a base station. The method further includes sending a second indication for the transmission power to the base station. The UE receives the indication for the transmission power level, and applies the transmission power level on uplink from the UE to the base station. The UE is located between the base station and a radio node and transmits on uplink to the base station and the radio node. | 06-19-2014 |
20140177621 | IN-SYNCHRONIZATION AND OUT-OF-SYNCHRONIZATION HANDLING METHOD AND APPARATUS - The present invention is applicable to the field of communications technologies, and provides an in-synchronization and out-of-synchronization handling method and apparatus. The method includes: reporting, by a physical layer, an invalid frame indication to a high layer, where the invalid frame indication is used to indicate an invalid frame, and the invalid frame is a frame not used for detecting out-of-synchronization, so as to count the number of frames that are assured to be out of synchronization within timing; and when the number of frames that are assured to be out of synchronization within the timing reaches a predefined value, determining that a radio link is out of synchronization. By using the present invention, the modified timing of the timer and the number of in-synchronization indications correspond to each other. | 06-26-2014 |
20140233513 | Precoding Control Indication Feedback Method, User Equipment, and Base Station - Embodiments of the present invention disclose a precoding control indication feedback method, a user equipment, and a base station. Channel capacity values corresponding to precoding matrices in a precoding matrix set are calculated. A sequence number of a precoding matrix corresponding to a maximum channel capacity value is used as a PCI to be used. The PCI to be used, a CQI indicating downlink channel quality, and ACK/NACK indicating a data decoding result are borne over an uplink HS-DPCCH. The same are fed back to a corresponding base station node to instruct the base station node to select a MIMO single-stream manner or a single-antenna manner to send data to be sent. | 08-21-2014 |
20140307673 | Method for Sending Control Information and Base Station - Embodiments of the present invention provide a method for sending control information and a base station. The method includes performing rate matching on a coded sequence obtained by performing channel coding on second control information to obtain a symbol sequence. The second control information includes bit information indicating layer number information. The method also includes sending the symbol sequence to a user equipment (UE) over a high speed shared control channel (HS-SCCH). | 10-16-2014 |
20140314168 | Data Transmission Method, Apparatus, and System - Embodiments of the present invention provide a data transmission method, apparatus, and system. The method includes receiving transmitter antenna quality information sent by a receiver; determining, according to the transmitter antenna quality information, a transmitter antenna that transmits data; switching a first transmission mode to a second transmission mode when the transmitter antenna quality information satisfies a preset condition; and transmitting the data by using the second transmission mode and the determined transmitter antenna. | 10-23-2014 |
20140341195 | Method and Device for Switching - A switching method and device are disclosed by the present invention. The switching method according to the embodiments of the present invention includes: receiving from a base station a switching indication information that requires a UE to switch a TTI; sending to the base station a switching confirmation information with which the switching indication information is confirmed; and switching the TTI. The switching method according to the embodiments of the present invention includes: sending to a UE a switching indication information that requires the UE to switch a TTI; and receiving from the UE a switching confirmation information with which the switching indication information is confirmed. By using the switching method and device according to the embodiments of the present invention, the delay of switching the TTI can be shortened and the TTI can be switched quickly. | 11-20-2014 |
20150049742 | MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) TRANSMISSION METHOD AND APPARATUS - Embodiments of the present invention disclose an uplink MIMO transmission method, including: sending, by a UE, first data to a base station (NodeB) in a first process in an HARQ_RTT, and receiving an acknowledgement character related to the first data and returned by the NodeB; and determining, by the UE according to the acknowledgement character and a rank value to be used for next transmission, data transmission of the first process in a next HARQ_RTT. The present invention further provides a corresponding user equipment and base station. Implementing the method and apparatus provided by the present invention can enable a UE to correctly perform HARQ transmission using MIMO, thereby effectively ensuring performance of MIMO. | 02-19-2015 |
20150063344 | DATA BOUNDARY DETERMINING METHOD, INDICATION INFORMATION SENDING METHOD, AND APPARATUSES THEREOF - Embodiments of the present invention disclose a data boundary determining method, an indication information sending method, and apparatuses thereof. The boundary determining method includes: acquiring, by a base station in which a non-reference cell locates, timing information of a reference cell, or a parameter used to determine boundary information of a high speed dedicated physical control channel (HS-DPCCH); and determining, by the base station, the boundary information of the HS-DPCCH according to the timing information of the reference cell or the parameter, where the boundary information is used by the base station to search for the HS-DPCCH. The present invention solves a technical problem in the prior art that a base station in which a non-reference cell locates is not capable of finding a correct boundary of the HS-DPCCH and therefore causes a decrease in downlink data transmission performance. | 03-05-2015 |
20150063493 | PILOT SIGNAL TRANSMITTING METHOD, AND CHANNEL ESTIMATION METHOD, APPARATUS, AND SYSTEM - Embodiments of the present invention disclose a pilot signal transmitting method, and a channel estimation method, an apparatus, and a system. The method includes: within a transmission time interval (TTI), transmitting a first pilot signal (CPICH | 03-05-2015 |
20150078312 | METHOD FOR FEEDING BACK UPLINK CONTROL INFORMATION IN DOWNLINK MIMO MODE AND USER EQUIPMENT - Embodiments of the present invention disclose a method for feeding back uplink control information in a downlink MIMO mode and a user equipment, which are used to implement that a UE feeds back control information to a base station, are applicable to a precoding weight set restriction application scenario, and reduce transmit power of the UE while ensuring HS-DPCCH receive performance of the base station. The method provided by the embodiments of the present invention includes: generating, by a UE, 1-bit precoding control indicator (PCI) information; generating, by the UE, channel quality indicator (CQI) information; performing, by the UE, joint encoding on the PCI information and the CQI information, to obtain a joint encoding result; and feeding back, by the UE, the joint encoding result to a base station through an uplink high speed dedicated physical control channel (HS-DPCCH). | 03-19-2015 |
20150085807 | COMMUNICATION METHOD AND SYSTEM USING UPLINK MULTIPLE INPUT MULTIPLE OUTPUT TECHNOLOGY - The present invention discloses a communication method and system using MIMO technology. The communication method includes: a network side device determines whether a UE uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and the network side device notifies the UE of indication information indicating the determined uplink data transmission mode. The communication method and system help the UE to use a specific uplink data transmission mode in combination with various factors, therefore reducing a delay of an uplink data transmission, improving an uplink data transmission speed, thereby meeting development needs of uplink high-speed data communication services of the UE. | 03-26-2015 |