Abstract:
Embodiments of the present disclosure provide a V2X communication method and apparatus. The method is applicable for a V2X node and includes: detecting a downlink control channel whose CRC code is scrambled by a V-RNTI relevant to the V2X node; and receiving V2X data information on a corresponding downlink data channel according to an indication of the detected downlink control channel. In the present disclosure, the receiving V2X node is able to receive V2X data information selectively, which avoids useless data receiving and data processing operations of the receiving V2X node, reduces the number of downlink control channels and downlink data channels to be detected and processed by the receiving V2X node.
Abstract:
Provided are a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT), with a transmission and receipt processing method and device for time-frequency synchronization between V2X terminals. When a synchronization signal to be transmitted is identical to a synchronization signal of an existing D2D terminal, time-frequency resources configured for the D2D terminal in a cell are reused to transmit the synchronization signal. When synchronization signal to be transmitted is different from a synchronization signal of an existing D2D terminal, reconfigured time-frequency resources are used to transmit the synchronization signal. The synchronization signal transmitted by a V2X terminal indicates a corresponding synchronization source type by using a value of an SLSS sequence index and/or a value of a PSBCH specified field.
Abstract:
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present disclosure provide a method for transmitting signals. The method includes: determining, by a communication node, that resources of a DRS and resources of other types of reference signals are overlapped; and selecting, by the communication node, at least one type of signal from the DRS and the other types of reference signals according to a predefined mode and transmitting the selected signal. Embodiments of the present disclosure may further disclose a corresponding method and device for receiving signals, a method and device for determining transmission power of the reference signals and a method for transmitting the DRS in a DL transmission burst including the data. With embodiments of the present disclosure, the confusion of the measurement of the DRS and the measurement of other types of reference signals may be solved.
Abstract:
Provided is a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a method for transmitting data, including: performing, by a Long-Term Evolution (LTE) equipment, Clear Channel Assessment (CCA) in one channel of a unlicensed band; and determining, by the LTE equipment, whether the channel can be occupied according to a CCA measurement value in the channel, and determining a data transmission parameter if it is determined that the channel can be occupied. The present disclosure also provides a corresponding apparatus. According to the method and apparatus provided by the present disclosure, the transmission power of the apparatus on the unlicensed band may be controlled, channel seizing opportunity is increased and effective coexistence is ensured.
Abstract:
The present disclosure provides a method for reporting channel state information (CSI). a first set of channel state information-reference signals (CSI-RSs) sent from a base station is measured to obtain a first set of CSI, and the first set of CSI obtained is reported to the base station. A second set of CSI-RSs sent from the base station is measured based on the first set of CSI to obtain a second set of CSI, and the second set of CSI obtained is reported to the base station, in which the second set of CSI-RSs is precoded CSI-RSs determined based on the first set of CSI.
Abstract:
The present invention provides an uplink control information transmitting method and apparatus. In the method, when a user equipment (UE) is configured with an uplink carrier in an unlicensed spectrum, the UE transmits uplink control information through a pre-defined location and a pre-defined format in a licensed spectrum and/or a pre-defined location and a pre-defined format in an idle unlicensed spectrum according to an uplink (UL) grant transmitted from a base station and the UCI to be transmitted. According to the technical solution provided by the present invention, the UCI is flexibly transmitted in the licensed spectrum or in the idle unlicensed spectrum, thereby improving transmission efficiency and reducing impact on downlink signal scheduling when the UE is configured with the uplink carrier in the unlicensed spectrum and transmits the UCI, and further improving LTE network efficiency.
Abstract:
A method, terminal, and base station for transmitting or receiving hybrid automatic repeat request acknowledgment (HARQ-ACK) information in a wireless communication system. The method includes receiving, from a base station (BS), first data on a first component carrier (CC) configured with frequency division duplex (FDD) and second data on a second CC configured with time division duplex (TDD), wherein one of the first and second CC is a primary CC (PCC) and another of the first and second CC is a secondary CC (SCC); determining HARQ-ACK timing for the first data based on a configuration of the PCC; determining HARQ-ACK timing for the second data based on the configuration of the PCC; transmitting, to the BS on the PCC, HARQ-ACK information for the first data using the determined HARQ-ACK timing for the first data and HARQ-ACK information for the second data using the determined HARQ-ACK timing for the second data.
Abstract:
The present invention discloses a method and an apparatus for reporting channel state information (CSI). In the method, a UE receives information of a CSI report, analyzes the information of the CSI report, determines a frequency band of the CSI report, a report type of the CSI report, a report mode of the CSI report, a CSI process of the CSI report, a combination of at least one in a CSI subframe set and/or cells, and a report way of the CSI report. According to the method, it is ensured that in a condition that a part of uplink subframes are occupied, transmission of the CSI report of the UE is not impacted.
Abstract:
A method for implementing uplink transmission in a flexible frequency division duplex (FDD) system is provided. A flexible FDD supported user equipment (FFUE) receives signaling from an evolved node B (eNB), obtains an uplink carrier configuration, and performs physical uplink shared channel (PUSCH) transmission by way of synchronous HARQ of 8 ms, synchronous HARQ of 10 ms, or asynchronous hybrid automatic repeat request (HARQ). According to the solution provided by the present invention, uplink transmission in the FDD system can be realized with low complexity, and the system performance of the FDD system is improved.
Abstract:
Various embodiments of the present disclosure describe a terminal and a base station. Various embodiments of the present disclosure describe how to transmit the SRS on an FDD downlink carrier and effectively configure and transmit the FDD downlink carrier SRS, so that the FDD system has the channel reciprocity and is more suitable for a large-scale multi-antenna system. Various embodiments of the present disclosure describe an SRS transmission method and device when an uplink carrier of the FDD system can transmit an uplink signal and a downlink signal.