Abstract:
The present invention discloses a method and an apparatus for sending rank indication (RI) information, and a method and an apparatus for receiving RI information, wherein the method for sending the RI information includes: carrying the RI information on a physical uplink control channel (PUCCH) for transmitting scheduling request (SR) information when the RI information and the SR information are sent within a same subframe, and sending the RI information and the SR information by using the PUCCH for transmitting SR information. According to the present invention, the problem that the orthogonality of codes between PUCCHs is destroyed due to that the RI information and the SR information are sent within a same subframe is solved, the overall system performance thereby can be guaranteed.
Abstract:
A method for sending a physical broadcast channel in the TDD system is disclosed, which is: a signal of a physical broadcast channel is not sent in a pilot position, and the signal of the physical broadcast channel is sent on 4 OFDM symbols of the first subframe of one radio frame. Through the present invention, the extension requirement of the physical broadcast channel capacity in the TDD can be met, and the system complexity is reduced due to the normal cyclic prefix and extended prefix using the same sending method.
Abstract:
The present invention discloses a method for mapping physical random access channels, which comprises the following steps: the PRACHs in the same time domain location are mapped from low frequency to high frequency, or from high frequency to low frequency in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap; or the PRACHs in the same time domain location are mapped from two sides to the middle in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap. The present invention enables uniformly distributing the PRACHs which require to be processed by the same base station in the time domain, and decreasing the inter-cell interference of the second type PRACH to the utmost extent at the same time.
Abstract:
A method wherein: a base station assigns resource to an uplink channel sounding reference signal (SRS) of a UE, sends the SRS configuration parameters to the UE, wherein the SRS configuration parameters include SRS bandwidth parameter BSRS and an SRS frequency domain position parameter nRRC; after receiving the SRS configuration parameters, the UE calculates the frequency domain starting position of the SRS of the resource used for sending the SRS according to the SRS configuration parameters, and sends the SRS to the base station using the resource; wherein the frequency domain resource assigned to the SRS by the base station corresponds to a node of a tree structure configured by an SRS bandwidth, and the configured BSRS corresponds to the level on which the node is located, while the configured nRRC corresponds to the index of a branch node on the lowest level of the node in the tree structure.
Abstract:
A method for indicating an uplink resource is provided, including that: when a base station side transmits an uplink resource indication signaling in a downlink subframe, an uplink subframe indication signaling corresponding to the uplink resource indication signaling being transmitted together; and the uplink subframe indication signaling is used for indicating an uplink subframe used by a user side to transmit data according to the uplink resource indication signaling. A system for implementing the method is also provided, which can distinguish a resource indication signaling corresponding to different uplink subframes in the same downlink subframe, and avoid that all the users of different uplink subframes transmit the data in the same resource of the same uplink frame, thereby avoiding mutual interference between the users of the uplink subframes, ensuring system performance and resulting in less signaling overhead.
Abstract:
A mapping method for the initial location of the downlink pilot comprises the following steps: acquiring a cell sequence number; mapping the cell sequence number to k; and setting an initial location of a downlink pilot on a first antenna as the Kth sub-carrier. A mapping device for the initial location of the downlink pilot comprising: an acquiring module for acquiring a cell sequence number, a mapping module for mapping the cell sequence number to k and a setting module for setting an initial location of a downlink pilot on a first antenna as the Kth sub-carrier. The mapping method and the mapping device make each cell acquire the specific location of pilot, so that all functions of the system can be realized conveniently.
Abstract:
The present invention discloses a method and device for sending a message in a physical uplink control channel. The present invention overcomes the problem that an index of the physical uplink control channel corresponding to a ACK/NACK message can not be represented implicitly in prior art by using the known downlink information, which includes an index of the control channel element where control signaling associated with downlink data is located and an index of a sub-frame where the downlink data is located. Therefore, the index of the physical uplink control channel where the ACK/NACK message associated with the downlink data is located can be represented and the ACK/NACK message can be sent in an appropriate physical uplink control channel.
Abstract:
Provided are a method and apparatus for data transmission. In the method, frequency spectrum aggregation is performed on multiple first frequency spectrums corresponding to multiple systems; and data are transmitted on a second frequency spectrum formed through the frequency spectrum aggregation performed on the multiple first frequency spectrums. Through the technical solution provided, the frequency spectrum aggregation of multiple systems is implemented, and the frequency spectrum utilization of a communication system is improved.
Abstract:
The present invention provides a method for transmitting a PDCCH (physical downlink control channel) signal, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k, 2 symbols are fixedly used to transmit the physical downlink control channel, wherein k is a natural number. The present invention further provides another method for transmitting a PDCCH signal. In a TDD Long Term Evolution system, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k and the uplink/downlink switching period is 10 ms, the transmitting end selects 2, 3 or 4 symbols to transmit the PDCCH signal in subframe 6. With the transmission method of the PDCCH signal provided in the present invention, the utilization efficiency of the system resources and the transmission performance of PDCCH can be improved.
Abstract:
The disclosure discloses a multi-antenna signal processing method in an uplink system. The method includes that: after scrambling, modulation, layer mapping, pre-coding, transmission pre-coding, resource mapping and Single Carrier Frequency Division Multiple Access (SC-FDMA) signal generation are performed successively on a coded bit sequence corresponding to each codeword, a resulted signal is transmitted from each transmitting antenna port. The disclosure also provides a multi-antenna signal processing device in an uplink system. With the method and the device according to the disclosure, a lower Peak-to-Average Power Ratio (PAPR) or Cubic Metric (CM) of a signal to be sent can be ensured without imposing any constraint on a pre-coding matrix, thus reducing the cost and power consumption of a terminal whiling increasing transmission performance of the system.