Patent application number | Description | Published |
20090275334 | METHOD, SYSTEM, TERMINAL, ACCESS NODE AND GATEWAY FOR HANDING OVER TERMINAL TO MACROCELL - The present invention provides a method and system for handing over a terminal to a macrocell and terminal, access node and gateway. The method includes: determining that the terminal is in a frequent handover state or a fast moving state; handing over the terminal to the macrocell according to the frequent handover state or the fast moving state and a preconfigured handover criterion. | 11-05-2009 |
20110013577 | METHOD AND NETWORK DEVICE FOR CONTROLLING USER EQUIPMENT ACCESS IN MULTI-FREQUENCY SYSTEM - A method for controlling user equipment (UE) access in a multi-frequency system in the field of communication is provided. The method includes the following steps. A network side receives an access preamble sent by a UE on one frequency. When the network side determines that the UE needs to access on another frequency, the network side notifies the UE to access by switching to another frequency. Network device is also provided at the same time. Therefore, the UE access can be controlled according to a practical situation of the UE or each frequency, and the flexibility of the multi-frequency system is enhanced. | 01-20-2011 |
20110085511 | 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. | 04-14-2011 |
20110087945 | METHOD AND APPARATUS FOR ENCODING FEEDBACK SIGNAL - A method and apparatus for encoding feedback signals 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 step of 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. | 04-14-2011 |
20110188517 | 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. | 08-04-2011 |
20110317605 | 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 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. | 12-29-2011 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
20120307714 | Method and System for Data Transmission - Embodiments of the present invention provide a method and system for data transmission. The method for data transmission includes: sending, according to a mapping relationship between a first H-RNTI of a user equipment and a second H-RNTI of a relay node accessed by the user equipment, data to the user equipment corresponding to the first H-RNTI by using the relay node corresponding to the second H-RNTI. By using the technical solutions of the embodiments, the coverage capability of a cell edge is enhanced, and the efficiency in transmitting data to a UE at the cell edge is further improved. | 12-06-2012 |
20130308553 | Systems and Methods for Scheduling Multiple-Input and Multiple-Output (MIMO) High-Speed Downlink Packet Access (HSDPA) Pilot Channels - Transitioning from basic higher order MIMO estimation to enhanced higher order MIMO estimation (and vice-versa) can be accomplished through the signaling of high-speed downlink packet access (HSDPA) shared control channel (HS-SCCH) orders to next-generation user equipments (UEs). A base station can be configured to send an HS-SCCH order indicating activation of scheduled pilot channels, and then begin transmitting the scheduled pilot channels after receiving an ACK message from at least one next-generation UE. A base station can also be configured to send an HS-SCCH order indicating de-activation of scheduled pilot channels to next-generation UEs scheduled for downlink transmission, and then stop transmitting the scheduled pilot channels after receiving ACK messages from each next-generation UE. Alternatively, scheduled pilot channels may be activated/de-activated upon expiration of a timeout period, even without receiving an ACK message from some or all of the next-generation UEs scheduled for downlink transmission. | 11-21-2013 |
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 |
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 |
20140153554 | Method and Apparatus for Allocating Resource and Method and Apparatus for Acquiring Resource - Embodiments of the present disclosure disclose a method and apparatus for allocating resource and a method and apparatus for acquiring resource. The method for allocating resource includes: allocating an F-PCICH resource to a UE, where the F-PCICH resource includes F-PCICH configuration information; and sending the F-PCICH configuration information to the UE through first control information, where the first control information is corresponding to an F-PCICH resource index number, and the F-PCICH resource index number is corresponding to the F-PCICH configuration information. This enables the UE to acquire the F-PCICH resource, so that a UL CLTD technology can be applied. | 06-05-2014 |
20140169296 | Systems and Methods for Channel Measurements and Reporting - Embodiments are provided for configuring channel measurements and reporting by a user equipment (UE). The embodiments avoid unnecessary cell measurements and resulting reporting transmissions by the UE in network scenarios with restricted downlink transmissions from serving cells. A method by a network component includes sending, to the UE, a data transmission pattern for transmissions on downlinks from multiple cells serving the UE. The data transmission pattern indicates a plurality of subframes including one or more restricted subframes where transmissions from one of the cells are restricted. The method further includes sending, to the UE, a measurement pattern allocating measurements and reports for a cell from the UE to the cells at corresponding designated subframes of the subframes in the data transmission pattern. The UE transmits measurement reports to an assisting serving cell during the one or more restricted subframes. | 06-19-2014 |
20140254472 | Method, Device, and System for Sending and Receiving Control Channel Information - The present invention discloses a method, device, and system for sending and receiving control channel information. When a base station schedules a first relay, the base station selects a second relay according to an optimal precoding code book selected by the first relay. An optimal precoding code book selected by the second relay is orthogonal to the optimal precoding code book selected by the first relay. Control channel information of the first relay and control channel information of the second relay his encapsulated into a high speed downlink shared control channel HS-SCCH, and scrambling the HS-SCCH. The scrambled HS-SCCH is sent to the first relay and the second relay. | 09-11-2014 |
20140269590 | Method For Processing Scheduling Grant And User Equipment - The present invention provides a method for processing a scheduling grant and a UE. In the present invention, a UE determines a sending manner adopted by the UE. If the sending manner is not corresponding to a first grant value obtained by the UE, the UE further determines, according to the first grant value, an obtained primary/secondary stream signal to noise ratio, and an obtained power bias of an E-DPCCH, a second grant value corresponding to the sending manner, so that the UE can determine a length of a to-be-sent data block by using the sending manner and the second grant value. | 09-18-2014 |
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 |
20140341320 | METHOD AND APPARATUS FOR TRANSMITTING DATA STREAMS IN MIMO SYSTEM - A method for transmitting data streams in a multiple input multiple output (MIMO) system is provided, where each data stream is mapped to multiple layers in an MIMO channel space for transmission, and the method includes: performing inter-layer interleaving for N data streams to obtain N interleaved data streams; mapping the N interleaved data streams respectively to N layers in the MIMO channel space, and transmitting the N interleaved data streams that are mapped to the N layers. By using the method of the present invention, a combined CQI can be used in a better way to improve MIMO transmission performance. Further, an impact of inter-layer interference is canceled by using an interference cancellation technology (for example, an SIC technology) based on the inter-layer interleaving. | 11-20-2014 |
20150043506 | Systems and Methods for Scheduling Multiple-Input and Multiple-Output (MIMO) High-Speed Downlink Packet Access (HSDPA) Pilot Channels - Transitioning from basic higher order MIMO channel estimation to enhanced higher order MIMO channel estimation (and vice-versa) can be accomplished through the signaling of high-speed downlink packet access (HSDPA) shared control channel (HS-SCCH) orders to next-generation user equipments (UEs). A base station can be configured to send an HS-SCCH order indicating activation of scheduled pilot channels, and then begin transmitting the scheduled pilot channels after receiving an ACK message from at least one next-generation UE. A base station can also be configured to send an HS-SCCH order indicating de-activation of scheduled pilot channels to next-generation UEs scheduled for downlink transmission, and then stop transmitting the scheduled pilot channels after receiving ACK messages from each next-generation UE. Alternatively, scheduled pilot channels may be activated/de-activated without receiving an ACK message from some or all of the next-generation UEs scheduled for downlink transmission. | 02-12-2015 |
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 |
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 |