Demodulation reference signal indicating and receiving methods, transmit end, and receive end

    公开(公告)号:US12301518B2

    公开(公告)日:2025-05-13

    申请号:US17876301

    申请日:2022-07-28

    Abstract: This application discloses a DMRS indicating method, a DMRS receiving method, and an apparatus. The method includes: determining, by a transmit end from a plurality of groups of demodulation reference signal DMRS configuration information, DMRS configuration information corresponding to a current DMRS transmission scheme, and obtaining DMRS indication information based on the DMRS configuration information, where each group of DMRS configuration information includes a plurality of pieces of DMRS configuration information; and sending, by the transmit end, the DMRS indication information. The method and the apparatus provided in this application are implemented to match a plurality of scenarios in NR. This can satisfy a requirement for transmitting more layers of data, and can further reduce indication overheads.

    Systems and Methods for Self-Contained Air Interface Partitions

    公开(公告)号:US20200329475A1

    公开(公告)日:2020-10-15

    申请号:US16911828

    申请日:2020-06-25

    Abstract: Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.

    Systems and methods for self-contained air interface partitions

    公开(公告)号:US10750502B2

    公开(公告)日:2020-08-18

    申请号:US16006135

    申请日:2018-06-12

    Abstract: Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.

    Systems and methods for configuring air interfaces with low overhead

    公开(公告)号:US10390356B2

    公开(公告)日:2019-08-20

    申请号:US15878205

    申请日:2018-01-23

    Abstract: It is possible to reduce overhead when dynamically establishing an air interface configuration by communicating a modification instruction along with an index associated with a predefine air interface configuration. The modification instruction identifies a modification to one or more parameters of the predefined air interface configuration associated with the index. Together, the index and the modification indication specify a modified air interface configuration that is different than any of the candidate air interface configurations predefined for the network. The modification instruction allows networks to achieve similar degrees of flexibility while using substantially fewer predefined air interface configurations, which in turn permits the index associated with the selected air interface configuration to be signaled using fewer bits.

    Coding method and apparatus, base station, and user equipment

    公开(公告)号:US10348450B2

    公开(公告)日:2019-07-09

    申请号:US15719812

    申请日:2017-09-29

    Inventor: Lu Rong Yalin Liu

    Abstract: Embodiments of the present invention provide a coding method and apparatus, a base station, and user equipment. The method includes: determining a quantity of polar codes used to code a to-be-transmitted data block and a block length of each polar code of the polar codes used to code the to-be-transmitted data block; and determining, according to a quantity of bits of the to-be-transmitted data block, the block length of each polar code of the polar codes used to code the to-be-transmitted data block, and an input composite channel characteristic corresponding to each input bit position in the polar code of the polar codes used to code the to-be-transmitted data block, allocation information of valid input bits of the polar code of the polar codes used to code the to-be-transmitted data block. The quantity of polar codes used to code the to-be-transmitted data block is not less than two.

    Method and apparatus for reciprocity calibration between base stations

    公开(公告)号:US10164720B2

    公开(公告)日:2018-12-25

    申请号:US15192596

    申请日:2016-06-24

    Inventor: Lu Rong Dageng Chen

    Abstract: Embodiments of the present invention provide a method and an apparatus for reciprocity calibration between base stations, which relate to the communications field, and can improve precision of reciprocity calibration between base stations. The method includes: obtaining, by each base station by means of calculation, a precoding vector corresponding to a selected subcarrier of the base station; sending, by all the base stations to UE by using the selected subcarriers of the base stations, downlink user-dedicated reference signals that are mutually orthogonal between cells corresponding to the base stations; obtaining, by each base station, an inter-base station calibration compensation coefficient of the selected subcarrier of the base station; and adjusting, by each base station, a self-calibration matrix of the selected subcarrier according to the inter-base station calibration compensation coefficient of the selected subcarrier of the base station.

    Systems and Methods for Self-Contained Air Interface Partitions

    公开(公告)号:US20180324805A1

    公开(公告)日:2018-11-08

    申请号:US16034036

    申请日:2018-07-12

    Abstract: Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.

    Systems and Methods for Configuring Carriers Using Overlapping Sets of Candidate Numerologies

    公开(公告)号:US20180262378A1

    公开(公告)日:2018-09-13

    申请号:US15979092

    申请日:2018-05-14

    Abstract: It is possible to reduce the implementation complexity associated with dynamic carrier configuration by defining overlapping sets of candidate numerologies for at least some carriers in the network. A common numerology is included in sets of candidate numerologies pre-associated with two different carriers. This reduces the amount of numerologies that need to be supported by the corresponding user equipments (UEs) and base stations, which in turn reduces the complexity of those devices, e.g., less complex hardware, protocol stacks, and software, lower storage and processing requirements, etc. The common numerology specifies a common subset of physical layer parameters for both carriers. In one example, the common numerology specifies the same sub-carrier frequency spacing and symbol duration for both carriers. The common numerology may further specify the same cyclic prefix (CP) length for symbols communicated over both carriers.

    Method and Apparatus for Adjusting Transmit Powers of Base Station Antennas, and Base Station
    10.
    发明申请
    Method and Apparatus for Adjusting Transmit Powers of Base Station Antennas, and Base Station 有权
    调整基站天线和基站发射功率的方法和装置

    公开(公告)号:US20150124765A1

    公开(公告)日:2015-05-07

    申请号:US14597524

    申请日:2015-01-15

    Inventor: Lu Rong Dageng Chen

    CPC classification number: H04B7/0465 H04W52/367 H04W52/42 H04W72/0473

    Abstract: A method and an apparatus for adjusting transmit powers of base station antennas, and a base station are provided. The method includes receiving an input precoding matrix of a transmit power-limited antenna set, where the precoding matrix is determined according to a scheduling result of a user equipment communicating with a base station in each layer of each subband in a system; adjusting the precoding matrix according to a transmit power limit requirement of the transmit power-limited antenna set, a system capacity improvement requirement, or a coverage performance improvement requirement to obtain an adjusted precoding matrix; and adjusting a stream transmit power of the transmit power-limited antenna set by using the adjusted precoding matrix.

    Abstract translation: 提供了一种用于调整基站天线的发射功率的方法和装置,以及基站。 该方法包括接收发射功率限制天线组的输入预编码矩阵,其中根据在系统中每个子带的每层中与基站通信的用户设备的调度结果来确定预编码矩阵; 根据发射功率限制天线组的发射功率限制要求,系统容量改善要求或覆盖性能改善要求来调整预编码矩阵以获得经调整的预编码矩阵; 以及通过使用经调整的预编码矩阵来调整发射功率限制天线组的流发射功率。

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