Patent application number | Description | Published |
20120063401 | CONTROL CHANNEL MAPPING METHOD AND APPARATUS - A control channel mapping method is provided, which includes: determining a search space corresponding to each object for a same aggregation level, where more than one object exist and are determined according to a component carrier; and mapping a control channel corresponding to the object into the determined search space. A detection method is further provided, which includes: determining an initial location of a search space corresponding to the object, where more than one search space exist for the same aggregation level, and the object is determined according to a component carrier, and determining a size of the search space corresponding to the object; and detecting a control channel in the determined search space. A User Equipment (UE) and a network equipment are also provided. Therefore, the collision of control channels is reduced, and an impact probability of control channels is reduced. | 03-15-2012 |
20120082130 | METHOD AND APPARATUS FOR MAPPING AND DETECTING CONTROL CHANNEL - A method and apparatus for mapping and detecting control channel are provided. The method for mapping a control channel includes: for the same aggregation level, according to a signaling length of a control channel corresponding to a component carrier, determining a corresponding search space for at least two control channels that have the same signaling length, so as to enable the at least two control channels that have the same signaling length to use the same search space, and mapping the at least two control channels that have the same signaling length to the determined corresponding search space. Therefore, conflicts between the control channels are reduced, and the number of times of blind detection of the control channels is also reduced. | 04-05-2012 |
20120093112 | METHOD, BASE STATION, UE, AND SYSTEM FOR SENDING AND RECEIVING PDCCH SIGNALING - A method, a base station, a User Equipment (UE) and a system for sending and receiving Physical Downlink Control Channel (PDCCH) signaling are disclosed. The method for sending PDCCH signaling includes the following steps: the base station determines locations of a first search space and second search space; and the base station sends only PDCCH signaling exclusive of a Carrier Indication Field (CIF) to the UE in a physically overlapped region between the first search space and the second search space if the physically overlapped region exists and length of PDCCH signaling exclusive of a CIF in the first search space is equal to length of PDCCH signaling inclusive of a CIF in the second search space. | 04-19-2012 |
20120155316 | Method and Device for Determining Search Space, and Method and Device for Determining Candidate Control Channel Resources - A method and a device for determining a search space and for determining candidate control channel resources are provided in present invention. The method for determining the search space includes: determining the number of downlink control information bits of each type of control channel currently required to be monitored by a UE; determining a temporary search space corresponding to the each type of control channel according to a mapping relationship currently used by the UE; and determining that an actual search space corresponding to a selected type of control channel is all or a part of CCEs of a union of temporary search spaces corresponding to all or a part of control channels with the same number of the downlink control information bits, when the DCI bit number of one or more other control channels is the same as the DCI bit number of the selected type of control channel. | 06-21-2012 |
20130077589 | Method, Base Station, UE, and System for Sending and Receiving PDCCH Signaling - A method, a base station, a User Equipment (UE) and a system for sending and receiving Physical Downlink Control Channel (PDCCH) signaling are disclosed. A method includes determining locations of a first search space and a second search space of a User Equipment (UE). A method also includes sending PDCCH signaling with no Carrier Indication Field (CIF) to the UE in a physically overlapped region between the first search space and the second search space if the physically overlapped region exists and a length of the PDCCH signaling with no CIF in the first search space is equal to a length of PDCCH signaling with the CIF in the second search space. | 03-28-2013 |
20130077590 | METHOD AND APPARATUS FOR MAPPING AND DETECTING CONTROL CHANNEL - Method and apparatus are provided for mapping and detecting a control channel. For the same aggregation level, according to a signaling length of a control channel corresponding to a component carrier, a corresponding search space is determined for at least two control channels that have the same signaling length, so as to enable the at least two control channels that have the same signaling length to use the same search space. The at least two control channels having the same signaling length are mapped to the determined corresponding search space. Therefore, conflicts between the control channels are reduced, and the number of times of blind detection of the control channels is also reduced. | 03-28-2013 |
20130107844 | Method and Device for Determining Search Space, and Method and Device for Determining Candidate Control Channel Resources | 05-02-2013 |
20130322378 | METHOD AND APPARATUS FOR SENDING UPLINK/DOWNLINK SCHEDULING INFORMATION, AND METHOD AND APPARATUS FOR RECEIVING UPLINK/DOWNLINK SCHEDULING INFORMATION - The present invention provides a method and an apparatus for sending uplink/downlink scheduling information, and a method and an apparatus for receiving uplink/downlink scheduling information. The method for sending downlink scheduling information includes: determining, in downlink subframes on a second carrier, a first downlink subframe, in which at time corresponding to the first downlink subframe, a subframe on a first carrier is an uplink subframe; and sending, on a fifth downlink subframe on the first carrier, downlink scheduling information corresponding to the first downlink subframe on the second carrier to a terminal, in which time corresponding to the fifth downlink subframe is before the time corresponding to the first downlink subframe. The present invention achieves the purpose of performing uplink and downlink scheduling on a second carrier through a first carrier bearing a PDCCH. | 12-05-2013 |
20130336267 | Communication Method and Apparatus for Carrier Aggregation System - Embodiments of the present invention provide a communication method for a carrier aggregation system. The communication method includes receiving physical downlink share channel PDSCH information sent by a base station through a subframe n of a secondary cell. If a subframe n of a primary cell is a downlink subframe, an ACK/NACK of the sent PDSCH information is fed back on a subframe m or a subframe p of the primary cell. | 12-19-2013 |
20140022964 | Method for Transmitting Information in Time Division Duplexing System, User Equipment, and Base Station - The present invention discloses a method for transmitting information in a TDD system, a user equipment, and a base station, and belongs to the TDD field. The method for transmitting information includes receiving, by a UE and on a first carrier of a TDD system, an uplink scheduling grant sent by a base station. The method includes sending, by the UE and in a first sub-frame on a second carrier, a scheduled PUSCH. The method further includes receiving, by the UE and in a second sub-frame, a PHICH. The the first carrier and the second carrier have different TDD uplink/downlink configurations, the second sub-frame has a backward compatible PHICH resource, and on the first carrier or the second carrier, the backward compatible PHICH resource is a PHICH resource which is identifiable to a UE in a TDD system whose version is lower than that of the TDD system. | 01-23-2014 |
20140023028 | POWER CONTROL METHOD, USER EQUIPMENT, AND BASE STATION - Embodiments of the present invention disclose a power control method, a user equipment, and a base station. The method according to an embodiment of the present invention includes the following: a user equipment UE receives a transmitter power control TPC command sent by a base station, where the TPC command is used to indicate a power adjustment value of one carrier; and if the UE does not send a physical uplink control channel PUCCH in a previous uplink subframe of a current uplink subframe of the one carrier, performing, by the UE, according to a PUCCH transmit power used when the UE sends a latest PUCCH from among multiple carriers and the power adjustment value, TPC accumulation to obtain an updated PUCCH transmit power of the one carrier, where the multiple carriers include the one carrier. | 01-23-2014 |
20140044092 | METHOD AND DEVICE FOR TRANSMITTING ACKNOWLEDGEMENT OR NEGATIVE ACKNOWLEDGEMENT INDICATION INFORMATION - The present invention discloses a method and device for transmitting ACK/NACK indication information. A network-side device configures at least two carriers for a UE; transmits PDCCH information to the UE; selects one of at least two timing relationships as a first timing relationship; determines a corresponding third uplink subframe and first carrier; indicate related information corresponding to the third uplink subframe and the first carrier to the UE; in the third uplink subframe of the first carrier, determines a first channel resource, and indicates the first channel resource to the UE; and receives an ACK/NACK fed back by the UE on the allocated resource. | 02-13-2014 |
20140086184 | METHOD, APPARATUS AND SYSTEM FOR RECEIVING AND SENDING SCHEDULING INFORMATION - The present invention discloses a method and a terminal for receiving and sending scheduling information, and relates to the field of communications technologies. The method comprises: obtaining, by a terminal, transmission mode information of each carrier of N carriers configured by a network device, where N is a natural number greater than 1; determining a set of candidate downlink control information DCI formats according to the transmission mode information, where the set of candidate DCI formats includes at least a first DCI format and a second DCI format, where a physical downlink control channel PDCCH corresponding to the first DCI format carries scheduling information of at least two carriers of the N carriers, and a PDCCH corresponding to the second DCI format carries scheduling information of one carrier of the N carriers; and receiving and detecting a PDCCH corresponding to each DCI format in the set of candidate DCI formats. | 03-27-2014 |
20140112219 | DATA TRANSMISSION METHOD BASED ON CROSS-CARRIER SCHEDULING, USER EQUIPMENT, AND BASE STATION - Embodiments of the present invention provide a data transmission method based on cross-carrier scheduling. The method includes: determining a first downlink subframe according to a timing relationship of an uplink HARQ of a reference uplink and downlink configuration, where the first downlink subframe is used to indicate timing of sending uplink scheduling grant information of a first uplink subframe of a scheduled cell; transmitting the uplink scheduling grant information in a subframe of a scheduling cell corresponding to the first downlink subframe, under a circumstance that the subframe of the scheduling cell corresponding to the first downlink subframe is a downlink subframe, where an uplink and downlink configuration of the scheduling cell and an uplink and downlink configuration of the scheduled cell are different; and receiving or sending uplink data in the first uplink subframe. In the present invention, the cross-carrier scheduling may be implemented effectively. | 04-24-2014 |
20140119269 | Method for Detecting and Sending Control Signaling, User Equipment, and Base Station - Embodiments of the present invention provide a method for detecting and sending control signaling, a user equipment, and a base station. The detecting method includes: obtaining, by a UE, a transmission mode of a data channel configured by a base station; determining, by the UE, a first DCI format and a second DCI format that are corresponding to the transmission mode, where PDCCH information corresponding to the first DCI format is transmitted in a precoding-based mode, and PDCCH information corresponding to the second DCI format is transmitted in a single-antenna port mode or transmit diversity mode based on non-precoding; and detecting, by the UE and in a subframe, PDCCH information corresponding to the first DCI format and the second DCI format according to a mode in which the PDCCH information is transmitted. | 05-01-2014 |
20140146775 | METHOD AND DEVICE FOR DETECTING AND TRANSMITTING INFORMATION - Embodiments of the present invention disclose a method and a device for detecting and transmitting information. The method includes: obtaining, by a UE, at least one type of configuration information of an antenna port occupied by a D-PDCCH, which is configured on a base station side; determining, by the UE, a search space of the D-PDCCH; and detecting, by the UE, the D-PDCCH in the search space according to the antenna port configuration information. With the embodiments of the present invention, the UE can detect the D-PDCCH, and therefore data transmission is ensured. Furthermore, a blind detection of a PDCCH by the UE based on time-frequency resources in an existing system is extended to a spatial dimension, that is, an antenna port, thereby increasing the efficiency of resource utilization, so that the D-PDCCH can be detected in the spatial dimension. | 05-29-2014 |
20140153528 | METHOD AND DEVICE FOR SENDING AND RECEIVING ACKNOWLEDGEMENT - A method for sending an acknowledgement includes: sending first subframe ratio information and second subframe ratio information to a UE; reserving a first PHICH resource set in a first acknowledgement subframe set; reserving a second PHICH resource set in an acknowledgement subframe, in which the first PHICH resource set does not exist, of a second acknowledgement subframe set; receiving uplink data sent by the UE; determining an acknowledgement subframe for the uplink data; and sending an acknowledgement to the UE by using a PHICH resource in the first PHICH resource set if the first PHICH resource set exists in the acknowledgement subframe, or sending an acknowledgement to the UE by using a PHICH resource in the second PHICH resource set if the first PHICH resource set does not exist in the acknowledgement subframe. PHICH resource overhead of a system is lowered and data transmission for the user equipment is ensured. | 06-05-2014 |
20140211709 | Method, User Equipment, and Base Station for Transmitting Information - The present invention discloses a method, a user equipment, and a base station for transmitting information. The method includes receiving a downlink assignment sent by a base station. The downlink assignment includes a trigger flag that is used to indicate a trigger state of aperiodic channel state information (CSI). An uplink resource used to send the aperiodic CSI is determined. The aperiodic CSI to the base station is sent on the uplink resource according to the trigger flag. | 07-31-2014 |
20140211710 | CONTROL INFORMATION TRANSMISSION METHOD, USER EQUIPMENT, AND BASE STATION - The present invention discloses a control information transmission method, a user equipment, and a base station. The method includes: obtaining a data channel transmission mode configured by a base station; determining a downlink control information DCI format set corresponding to the transmission mode, where the DCI format set includes a first DCI format, and the first DCI format includes single-codeword control information; and detecting, according to the DCI format set, control signaling sent by the base station and corresponding to the DCI format set. The user equipment includes a first obtaining module, a first determining module, and a detecting module. The base station includes a configuring module, a first determining module, and a first sending module. | 07-31-2014 |
20140241310 | METHOD FOR RECEIVING AND SENDING CONTROL CHANNEL, USER EQUIPMENT AND BASE STATION - The present invention discloses methods for receiving and sending a control channel, a user equipment, and a base station. The method for receiving a control channel includes: obtaining time-frequency resource information and first information of the control channel; determining a search space of the control channel according to the time-frequency resource information and the first information; and receiving the control channel in the search space. By using the methods, the user equipment and the base station according to embodiments of the present invention, the search space of the control channel can be determined according to the time-frequency resource information and the first information of the control channel, so that receiving and sending of the control channel can be implemented and a capacity of the control channel can be expanded, thereby improving system scheduling efficiency and flexibility and further improving user experience. | 08-28-2014 |
20140269582 | METHOD AND APPARATUS FOR TRANSMITTING MULTI-SUBFRAME SCHEDULING SIGNALING - Embodiments of the present invention disclose a method and an apparatus for transmitting multi-subframe scheduling signaling, relate to the field of wireless communications technologies, and ensure correct transmission of scheduling information. The present invention includes: acquiring a first correspondence, and determining multiple hybrid automatic repeat request HARQ processes according to the first correspondence, where the first correspondence is a correspondence between process numbers of the multiple HARQ processes and an HARQ process field; generating scheduling signaling according to the first correspondence and the multiple HARQ processes; and sending the scheduling signaling and a data packet corresponding to the multiple HARQ processes scheduled by the scheduling signaling to a user equipment. The embodiments of the present invention are mainly used in a process of transmitting the multi-subframe scheduling signaling. | 09-18-2014 |
20140321382 | Communication Method, Base Station, and User Equipment - Embodiments of the present invention provide a communication method, a base station, and a user equipment. The communication method includes: sending a PDCCH to a user equipment in one subframe, where the PDCCH is used to schedule transmission of PDSCHs of at least two subframes of the user equipment, the PDCCH carries first indicator information, and the first indicator information indicates a channel resource for transmitting uplink ACK/NACK information that is corresponding to the PDSCHs; determining a transmission subframe carrying the uplink ACK/NACK information that is corresponding to the PDSCHs, and receiving the uplink ACK/NACK information on the channel resource in the transmission subframe. In the embodiments of the present invention, when a PDCCH schedules multiple PDSCHs, an ACK/NACK resource indicator field is used to indicate a channel resource of ACK/NACK feedback that is corresponding to the scheduled PDSCHs, thereby improving scheduling flexibility. | 10-30-2014 |
20140328283 | METHOD AND APPARATUS FOR WIRELESS COMMUNICATIONS - The present invention discloses a method and an apparatus for wireless communications, which relate to the field of communications and are used to solve the problem of a relatively low communication quality in the advanced full duplex communication technology. The method provided in the present invention includes: dividing available radio resources in a communication system into first radio resources and second radio resources, where the first radio resources and the second radio resources occupy different radio resources; simultaneously performing bidirectional transmission of communication information with a user equipment through the first radio resources; and performing unidirectional transmission of communication information with the user equipment through the second radio resources. The present invention is applicable to the field of communications and used for wireless communications. | 11-06-2014 |
20140348085 | METHOD AND APPARATUS FOR TRANSMITTING HYBRID AUTOMATIC REPEAT REQUEST INDICATOR INFORMATION - Embodiments of the present invention relate to a method and an apparatus for transmitting hybrid automatic repeat request indicator information. The method for transmitting hybrid automatic repeat request indicator information according to the present invention includes: allocating enhanced physical downlink control channel EPDCCH resources to a UE; selecting partial resources from the EPDCCH resources; and sending HARQ indicator information to the UE through the partial resources. | 11-27-2014 |
20140348123 | METHOD AND DEVICE FOR TRANSMITTING CONTROL SIGNALING - The present invention provides a method and a device for transmitting control signaling. The method includes: determining a first resource set and a second resource set, where the first resource set and the second resource set are two resource sets in each TTI that do not overlap; and transmitting control signaling in the first resource set and the second resource set respectively, where, in the first resource set, control signaling allocated to each UE can occupy all reserved bandwidth, and in the second resource set, control signaling allocated to each UE can occupy a part of all reserved bandwidth. Embodiments of the present invention can reduce complexity of blind detection of a UE. | 11-27-2014 |
20150055599 | Method, Base Station, UE, and System for Sending and Receiving PDCCH Signaling - A method, a base station, a User Equipment (UE) and a system for sending and receiving Physical Downlink Control Channel (PDCCH) signaling are disclosed. A method includes determining locations of a first search space and a second search space of a User Equipment (UE). A method also includes sending PDCCH signaling with no Carrier Indication Field (CIF) to the UE in a physically overlapped region between the first search space and the second search space if the physically overlapped region exists and a length of the PDCCH signaling with no CIF in the first search space is equal to a length of PDCCH signaling with the CIF in the second search space. | 02-26-2015 |