摘要:
A method and apparatus for indicating downlink physical resources scheduling in a wireless communication system are provided. The method includes sending downlink control information to a User Equipment (UE) on a first component carrier by an evolved Node B (eNB), wherein single downlink control information is used to schedule physical resources in at least one downlink sub-frame of one of a plurality of component carriers at a time, the plurality of component carriers including the first component carrier, a second component carrier, . . . , a kth component carrier, wherein k is greater than or equal to 2, receiving the downlink control information on the first component carrier, and receiving downlink data according to the downlink control information by the UE. The present invention can achieve a peak data rate to reach the design target of International Mobile Telecommunications (IMT)-Advanced system.
摘要:
A method for allocating an Acknowledgement/Negative Acknowledgement (ACK/NACK) channel by a Base Station (BS) in a Frequency Division Duplexing (FDD) system is provided. The method includes allocating downlink resources in one or more cells to a User Equipment (UE), transmitting, Physical Downlink Control Channel (PDCCH) information and downlink data using the downlink resources, allocating at least four ACK/NACK channels to the UE, receiving ACK/NACK information for the PDCCH information and the downlink data fed back by using two antennas from the UE, and performing re-transmission or transmitting new data according to the ACK/NACK information, wherein at least two of the at least four ACK/NACK channels are the same as at least two ACK/NACK channels allocated by the BS in a mode not using a Spatial Orthogonal Resource Transmit Diversity (SORTD) scheme, and the at least two of the at least four ACK/NACK channels are allocated to different antennas.
摘要:
An apparatus and a method for feeding back data receiving status, applied to a system, are provided. The method includes sequencing, by a User Equipment (UE), downlink subframes for transmitting data with respect to each Component Carrier (CC), generating receiving status feedback information for the first X downlink subframes with respect to each CC according to the result of the sequencing, where X≦M, wherein M is the number of downlink subframes on each CC, and transmitting the receiving status feedback information generated with respect to each CC to a base station. Accordingly, the UE will not misinterpret the receiving status for the downlink subframes due to inconsistencies with the base station between transmitting and receiving feedback. This affects the Hybrid Automatic Repeat Request (HARQ) transmission, saves the uplink overheads occupied by the receiving status feedback information, and increases the uplink coverage area.
摘要:
A method and apparatus for transmitting an acknowledgement (ACK)/negative acknowledgement (NACK) signal in a radio communication system are provided. The method includes: a user equipment(UE) determines the number f ACK/NACK bits included in an ACK/NACK information based on an uplink (UL) downlink assignment indicator (DAI) in a physical downlink control channel (PDCCH), selects an encoding scheme, encodes the ACK/NACK bits using the encoding scheme; selects a scrambling code based on an ACK/NACK transmission mode configured in the UE in a single-Cell mode, and generates ACK/NACK signal by scrambling the encoded ACK/NACK bits; and transmits the ACK/NACK signal in a physical uplink shared channel (PUSCH).
摘要:
The present invention describes that the C-RNTIs are grouped based on the random access preamble sequence, the transmission sub-frame and the transmission random access channel information used for the user equipment and detected by the base station. In such a way, the indicating information bits needed by C-RNTI allocation are decreased and the signaling overhead needed by C-RNTI allocation is also decreased. In addition, the random access process is optimized and the random access performance is improved.
摘要:
An apparatus and method for assigning an acknowledgement (ACK)/a negative acknowledgement (NACK) channel resources. The method includes setting a User Equipment (UE) to feed back Acknowledgement (ACK)/Negative Acknowledgement (NACK) information in a Carrier Aggregation (CA) mode; setting a Transmit Power Control (TPC) field of a Physical Downlink Controlling Channel (PDCCH) message to transmit an ACK/NACK Resource Indicator (ARI) information, when a Downlink Assigning Indicator (DAI) value of the PDCCH message of a Secondary cell (Scell) scheduled in a non cross-carrier manner is 1; setting the TPC field to transmit a TPC command for the ACK/NACK feedback information, when the DAI value is greater than 1; and transmitting the PDCCH message and downlink data to the UE.