WO2020063365A1 - 上行传输方法、上行传输的调度方法和设备 - Google Patents

上行传输方法、上行传输的调度方法和设备 Download PDF

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WO2020063365A1
WO2020063365A1 PCT/CN2019/105613 CN2019105613W WO2020063365A1 WO 2020063365 A1 WO2020063365 A1 WO 2020063365A1 CN 2019105613 W CN2019105613 W CN 2019105613W WO 2020063365 A1 WO2020063365 A1 WO 2020063365A1
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terminal
uplink
codeword
uplink signal
value
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French (fr)
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黄秋萍
高秋彬
陈润华
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Priority to US17/281,190 priority Critical patent/US11342972B2/en
Priority to KR1020217012958A priority patent/KR102495713B1/ko
Priority to EP19866306.4A priority patent/EP3859989A4/en
Publication of WO2020063365A1 publication Critical patent/WO2020063365A1/zh
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • H04B17/364Delay profiles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621Feedback content
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621Feedback content
    • H04B7/0626Channel coefficients, e.g. channel state information [CSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636Feedback format
    • H04B7/0639Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/046Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas

Definitions

  • Embodiments of the present disclosure relate to the field of communications technologies, and in particular, to an uplink transmission method, a scheduling method, and a device for uplink transmission.
  • the codebook-based uplink transmission scheme is a multi-antenna transmission technology that determines an uplink transmission precoding matrix based on a fixed codebook.
  • the fifth-generation communication technology new wireless access technology (fifth-generation radio access technology (5GNR) system based on codebook uplink transmission scheme and long-term evolution (LTE) system uplink spatial multiplexing technology
  • 5GNR fifth-generation communication technology new wireless access technology
  • LTE long-term evolution
  • a user equipment sends an uplink sounding reference signal (SRS) to a base station for acquiring a codebook-based uplink transmission scheme channel state information (Channel State Information).
  • SRS uplink sounding reference signal
  • the base station performs uplink channel detection according to the SRS sent by the UE, performs resource scheduling on the UE, and determines the SRS resources corresponding to the uplink transmission, the number of uplink transmission layers, and the precoding matrix, and further determines based on the precoding matrix and channel information.
  • Modulation and Coding Scheme (MCS) level for uplink transmission and then the base station allocates the physical uplink shared channel (PUSCH) resource and the corresponding MCS, transmission precoding matrix indicator (Transmit and Precoding Matrix Indicator) , TPMI), the number of transmission layers, and the corresponding SRS resource indicator (SRS resource indicator, SRI) are notified to the UE.
  • MCS Modulation and Coding Scheme
  • the UE performs modulation and coding on the data according to the MCS indicated by the base station, and uses the indicated SRI, TPMI, and number of transmission layers to determine the precoding matrix and the number of transmission layers used for data transmission, and then precodes and transmits the data.
  • the demodulation pilot of the PUSCH uses the same precoding method as the data of the PUSCH.
  • the base station estimates the uplink channel based on the demodulated pilot signal and performs data detection.
  • the codebook-based uplink transmission scheme uses the following precoding method (Section 6.3.1.5, 3GPP standard document TS38.211-f20 (2018-06), June 2018 version):
  • x (j) (i) represents the i-th symbol of the j-th data stream (also called the data layer / layer);
  • v represents the number of transport streams (the number of data streams) ;
  • p represents a serial number of the antenna port
  • y (p) (i) represents a symbol mapped to antenna port i corresponding to x (i).
  • the dimension P ⁇ ⁇ of the precoding matrix W (i), P represents the number of antenna ports corresponding to the uplink signal configured for the UE.
  • MIMO Multiple Input Multiple Output
  • the characteristics of the transmission antenna and radio frequency are significantly different from those of the base station.
  • the codebook design needs to fully consider the relevant characteristics between the antennas.
  • the two antenna ports satisfy the coherence condition, that is, the transmission paths of the antenna units can be adjusted to the same power and phase, the UE can use the two antenna ports to perform data transmission on the same layer at the same time through precoding to obtain the array gain.
  • factors such as power and phase inevitably exist between the actual UE antenna ports.
  • the terminal ’s optimal uplink transmission precoding may not be the precoding indicated by TPMI, that is, the terminal cannot obtain PUSCH transmission by using the precoding indicated by TPMI by the base station Better performance.
  • the NR system defines three antenna coherent transmission capabilities of the UE:
  • Non-coherent No antenna can coherently transmit.
  • the uplink codebook of the NR system includes codewords of partially coherent transmission and non-coherent transmission, and is used for UEs with partial coherent or non-coherent transmission capabilities.
  • any columns in the partially coherent transmission codeword only the elements corresponding to the same coherent transmission antenna group are non-zero elements, and only the elements of the coherent transmission antenna group are non-zero, that is, each column in the codeword There are only two non-zero elements corresponding to the same related transmission antenna group, and the other elements are all zero (in the 3GPP NR system, the first and third antennas are a coherent transmission antenna group, and the second and fourth antennas are another coherent Transmission antenna group); any column in the non-coherent transmission codeword has only nonzero elements corresponding to one antenna, that is, each column in the codeword has only one nonzero element, and the other elements are all zero.
  • Table 1 and Table 2 respectively show the codebooks for the 4-antenna single-stream and dual-stream transmissions of the NR system under orthogonal frequency division multiplexing (OFDM) waveforms.
  • OFDM orthogonal frequency division multiplexing
  • the multi-antenna power allocation method of the PUSCH using uplink MIMO is: the UE will calculate the transmit power according to the uplink power control formula (in the NR system, corresponding to section 7.1.1 of TS 38.213-f20) P PUSCH, b, f, c (i, j, q d , l)) performs power scaling according to the proportion of the number of ports actually sending signals to the total number of ports configured by the base station for the transmission mode corresponding to PUSCH, The scaled power is then divided evenly on the antenna port that actually sends the signal.
  • the uplink power control formula in the NR system, corresponding to section 7.1.1 of TS 38.213-f20
  • the precoding matrix indicated by the base station is The transmission power calculated by the UE according to the PUSCH power control formula is P, and then the actual transmission power of the PUSCH is P / 2, and the transmission power of the first antenna port and the third antenna port are each P / 4.
  • This scaling does not require that each antenna port of the UE can reach the maximum transmit power, allowing the UE to use a lower cost radio frequency component to implement multiple antenna functions.
  • the base station when the UE is located at the cell edge or the channel conditions are poor, the base station usually configures the UE with a low rank transmission and transmits data with the maximum transmission power as much as possible.
  • UEs with partial antenna coherent and non-coherent transmission capabilities always have a part of antenna ports without PUSCH transmission when transmitting in a single rank. Therefore, the current uplink MIMO multi-antenna power allocation mechanism cannot guarantee that a UE with partial antenna coherent and non-coherent transmission capabilities can achieve maximum transmit power in a single rank transmission under a codebook-based uplink transmission scheme, thereby reducing the UE.
  • Performance at the cell edge affects cell coverage.
  • the terminal's transmit power cannot reach the maximum transmit power, which will reduce the UE's
  • the performance at the edge of a cell affects the coverage of the cell.
  • the uplink transmission scheme of the related technology changes rapidly, or the phase difference or power difference between terminal antennas changes rapidly, the precoding matrix indicated by the base station cannot reflect the channel well, and may not be able to obtain a better Uplink transmission performance.
  • By introducing a transmit diversity gain it is possible to improve the performance when the channel changes quickly or the phase difference or power difference between terminal antennas changes rapidly. Uplink transmission performance.
  • An embodiment of the present disclosure provides an uplink transmission method, which is applied to a terminal and includes:
  • An embodiment of the present disclosure also provides another uplink transmission method, which is applied to a terminal and includes:
  • the code words in the first candidate code word set are cyclically used, and the uplink signals are pre-coded on multiple antenna ports and then sent.
  • An embodiment of the present disclosure further provides a scheduling method for uplink transmission, which is applied to a base station and includes:
  • the transmission scheme includes: delaying the uplink signals on multiple antenna ports, or cyclically using the codebook in a candidate codebook set to precode the uplink signals on multiple antenna ports.
  • An embodiment of the present disclosure provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor;
  • the transceiver is configured to send an uplink signal after delay processing.
  • An embodiment of the present disclosure further provides another terminal, including:
  • the processor is configured to read a program in a memory and execute the following process: cyclically utilize codewords in a first candidate codeword set, and perform precoding processing on uplink signals on multiple antenna ports;
  • the terminal sends the uplink signal after delay processing on multiple ports, and can transmit transmit diversity gain to improve the fast channel change or the phase difference or power difference between terminal antennas. Fast uplink transmission performance.
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, v represents the number of data streams; D (i) represents the dimension corresponding to x (i) is P ⁇ A square matrix of P, where P represents the number of antenna ports corresponding to the uplink signals configured for the terminal; Indicates the signal symbol obtained after layer mapping and the previous steps (such as encoding, modulation, etc.) for uplink data (note that the uplink data here can be data transmitted on PUSCH or data transmitted on PUCCH, etc.
  • the reference precoding matrix W 0 (i) may also be a precoding matrix selected from an uplink codebook.
  • the uplink codebook you can refer to the definition of related technical protocols.
  • the D (i) when the terminal capability is non-coherent transmission, the D (i) may be a pair of diagonal arrays, and each element on the main diagonal corresponds to a different phase offset; when the terminal When the capability is fully coherent transmission, the D (i) may be a unit array; when the terminal capability is partially coherent transmission, the D (i) may be a pair of angular arrays, and correspond to the same
  • the elements have the same phase offset, and the elements corresponding to different coherent transmission antenna groups have different phase offsets.
  • the value of the element d (i) l, m in the lth and mth columns in D (i) can be determined as follows:
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be determined by the terminal; or
  • ⁇ 1 , ⁇ 2 or ⁇ 3 may be a value agreed in the agreement; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be a value determined according to a subband bandwidth in a scheduling bandwidth of an uplink signal; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 The value of ⁇ 1 , ⁇ 2 or ⁇ 3 is indicated to the terminal by the base station through signaling.
  • a value determined by the terminal is not greater than ⁇ thred , where ⁇ thred is agreed by agreement.
  • the terminal determines a value not greater than ⁇ thred , where ⁇ thred is sent to the terminal by the base station through signaling, and the signaling may be RRC signaling, MAC CE signaling, or DCI signaling.
  • the value of ⁇ is determined by the scheduling bandwidth of the uplink signal.
  • the value of ⁇ should be such that the total phase change within the scheduling bandwidth is not less than C ⁇ , where C is an integer.
  • C may be a value predetermined by the terminal and the base station.
  • the value of ⁇ should be satisfied so that the total phase change within the scheduling bandwidth is not higher than C ⁇ .
  • the value of ⁇ is determined by the bandwidth of the cyclic shift subband in the following.
  • the value of ⁇ should be such that the total phase change in the cyclic shift subband is not less than C ⁇ , where C is an integer.
  • C may be a value predetermined by the terminal and the base station.
  • the value of ⁇ should be satisfied so that the total phase change in the cyclic shift subband is not higher than C ⁇ .
  • the base station indicates the value of ⁇ to the terminal through signaling.
  • the value of D (i) may be that the terminal receives an instruction message for determining the D (i) sent by the base station, and then uses the instruction message to determine D (i).
  • the base station indicates D (i) directly or indirectly to the terminal (UE) through signaling.
  • the manner of indirectly indicating D (i) includes, but is not limited to: a base station indicating a determination rule of D (i) to the UE; a base station indicating a parameter for determining D (i) to the UE, and the like.
  • the signaling may be RRC signaling, MAC-CE signaling, physical layer signaling, and the like.
  • the signaling is RRC signaling.
  • the embodiments of the present disclosure can introduce a phase offset based on the reference precoding matrix, thereby realizing the delay processing of the uplink signal, and introducing the transmit diversity gain, which can improve the fast channel change or the terminal antenna.
  • each x (i) mapped to the same subband has the same D (i), and the value of D (i) is the same as that of the subband.
  • the value of D (i) is a function of the number or frequency of the subband as a variable. For example, in D (i) corresponding to each x (i) mapped to the same subband, the value of n 1 is the same, and the value of n 1 increases as the frequency corresponding to the subband increases or Decreasing.
  • the subbands may be numbered from 1 to B in a frequency increasing manner, and then n 1 is equal to the number of the subband in which the resource unit to be mapped by x (i) is located, or n 1 is equal to the x (i) The sum of the number of the subband in which the resource unit to be mapped is located and a preset offset, and so on.
  • W 1 (i) represents the set of candidate precoding matrices W 1 of dimension P ⁇ ⁇
  • y (p) (i) means corresponding to x (i) Symbol mapped to the antenna port p, where p represents the serial number of the antenna port;
  • the reference precoding matrix corresponding to the uplink signal may be a precoding matrix indicated by the base station to the terminal through TPMI; or the reference precoding matrix is a predefined precoding matrix; or the reference precoding The matrix is a precoding matrix selected from the uplink codebook.
  • the D q may be determined by the terminal receiving an instruction message for determining the D q sent by the base station, and then determining by using the instruction message.
  • the uplink scheduling bandwidth signal comprises sub-bands B, said B is an integer greater than or equal to 1, 1 mapped to W (i) are the same as each x is the same subband (i) corresponding to, and the W There is a predetermined rule between the value of 1 (i) and the number or frequency of the subband; or, the value of W 1 (i) corresponding to each x (i) mapped to the same subband, according to the x ( i) The frequency domain position of the corresponding resource unit in the subband is determined.
  • any codeword D q in the first candidate codeword set may be a diagonal array, and each element on the main diagonal corresponds to a different phase offset.
  • the value of the element d l, m in the l th row and m th column in D q is determined as follows:
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; the ⁇ 1 , ⁇ 2 or ⁇ 3 are all a predetermined angle value; the value of n 2 ranges from 1 to M, where Let M be an integer greater than 1.
  • the M may be a ratio of a common multiple of ⁇ 2 and 2 ⁇ to ⁇ 2 , for example, a ratio of a least common multiple of ⁇ 2 and 2 ⁇ to ⁇ 2 .
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be determined by the terminal; or
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be determined by the terminal according to a predetermined first angle threshold and is not greater than the first angle threshold; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be determined by the terminal according to a second angle threshold sent by a base station, and is not greater than the second angle threshold; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 may be a value agreed in the agreement; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be a value determined according to a scheduling bandwidth of an uplink signal; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 may be a value determined according to a subband bandwidth in a scheduling bandwidth of an uplink signal; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 The value of ⁇ 1 , ⁇ 2 or ⁇ 3 is indicated to the terminal by the base station through signaling.
  • a value determined by the terminal is not greater than ⁇ thred , where ⁇ thred is agreed by agreement.
  • the terminal determines a value not greater than ⁇ thred , where ⁇ thred is sent to the terminal by the base station through signaling, and the signaling may be RRC signaling, MAC CE signaling, or DCI signaling.
  • the value of ⁇ is determined by the scheduling bandwidth of the uplink signal.
  • the value of ⁇ should be such that the total phase change within the scheduling bandwidth is not less than C ⁇ , where C is an integer.
  • C may be a value predetermined by the terminal and the base station.
  • the value of ⁇ should be satisfied so that the total phase change within the scheduling bandwidth is not higher than C ⁇ .
  • the value of ⁇ is determined by the bandwidth of the cyclic shift subband in the following.
  • the value of ⁇ should be such that the total phase change in the cyclic shift subband is not less than C ⁇ , where C is an integer.
  • C may be a value predetermined by the terminal and the base station.
  • the value of ⁇ should be satisfied so that the total phase change in the cyclic shift subband is not higher than C ⁇ .
  • the base station indicates the value of ⁇ to the terminal through signaling.
  • the terminal may perform cyclic precoding (or cyclic delay diversity) transmission in each cyclic shift subband in the entire frequency band allocated by the base station for the uplink signal, or, in each cyclic Shifted subbands perform cyclic precoding (or cyclic delay diversity) transmission.
  • the UE performs cyclic precoding (or cyclic delay diversity) transmission in each cyclic shift subband in the entire frequency band allocated by the base station for the uplink signal. It is assumed that the UE performs cyclic shift subband division with a granularity G in the entire frequency band allocated by the base station for the uplink signal (for example, the precoding granularity is G RBs). G may be indicated to the UE by the base station through signaling, or agreed by the protocol, or determined by the UE. G can be 1 RB, or a group of RBs, or the entire frequency band range of the uplink signal. Assume that the precoding matrix indicated by the base station for the terminal through TPMI is W 1 (i).
  • the UE uses the codeword group generated (or preset) according to certain rules.
  • Cyclic precoding refers to precoding the first data symbol within this granularity using the first codeword, and precoding the second data symbol using the second codeword.
  • the nth symbol is pre-coded using the mod (K, n) th codeword, ..., optionally, K is the ratio of the least common multiple of ⁇ and 2 ⁇ to ⁇ .
  • the uplink signal is PUSCH
  • the cyclic shift granularity G is 1 RB
  • 12 REs are allocated for PUSCH in the first PRB scheduled for PUSCH
  • K 4
  • this PRB corresponds to PUSCH
  • the first RE uses the codeword with the codeword number 1 as W (i)
  • the second RE corresponding to the PUSCH in this PRB uses the codeword with the codeword number 2 as W (i), ...
  • this The 4th RE corresponding to the PUSCH in the PRB uses the codeword with the codeword number 4 as W (i)
  • the 5th RE corresponding to the PUSCH in the PRB uses the codeword with the codeword number 1 as W (i)
  • the 6th RE corresponding to the PUSCH in this PRB uses a codeword with a codeword label of 2 as W (i), ...
  • the scheduling bandwidth of the uplink signal includes one cyclic shift subband, that is, the size of the cyclic shift subband is the scheduling bandwidth of the up
  • a definition method of (or preset) codeword groups generated according to certain rules is:
  • ⁇ in a codebook for a non-coherent transmission capability UE and ⁇ in a codebook for a partially coherent transmission capability UE may be the same or different values.
  • the UE performs cyclic delay diversity transmission with granularity N in the entire frequency band allocated by the base station for the uplink signal (in this case, the precoding granularity of the UE can be regarded as N RBs).
  • N may be indicated to the UE by the base station through signaling, or agreed by the protocol. Assuming that the precoding matrix indicated by the base station for the terminal through TPMI is W 1 (i), within the frequency band, the UE uses the codewords in the predefined codeword group to perform cyclic precoding with the precoding granularity N.
  • Cyclic precoding with precoding granularity N means that the first group of N RB data symbols are precoded with the first codeword, and the second group of N RB data symbols are precoded with the second codeword ..., the n groups of N RBs are pre-coded using mod (M, n) codewords, ..., optionally, M is the ratio of the least common multiple of ⁇ and 2 ⁇ to ⁇ .
  • the uplink signal is PUSCH
  • M 4
  • the predefined codeword group is used in the 4 PRBs with the smallest labels scheduled for PUSCH.
  • the codeword label is 1
  • the codeword is W (i)
  • the codeword with the codeword number 2 in the predefined codeword group is used as W (i) in the 4 PRBs with the next smallest label.
  • the definition of the predefined codeword group may be as shown in the schemes in the implementation manner 2.
  • the base station directly or indirectly indicates to the UE a codeword group generated (or a preset) according to a preset rule through signaling.
  • the manner of indirectly indicating a codeword group includes, but is not limited to: a base station indicating a codeword group generation rule to the UE; a base station indicating a parameter for determining the codeword group to the UE, and the like.
  • the signaling may be RRC signaling, MAC-CE signaling, physical layer signaling (for example, indicated by DCI), and the like.
  • the signaling is RRC signaling.
  • the UE sends to the base station a set of codewords (or a preset) codeword that the UE expects to generate according to a preset rule.
  • a preset rule Can be direct or indirect.
  • the UE sends a determination rule of the codeword group desired by the UE to the base station; the UE sends a parameter that the UE expects to determine the codeword group to the base station, and so on.
  • the UE sending the codeword set expected by the UE to the base station may include multiple sets of candidate information.
  • the base station determines, according to the codeword group sent by the UE, the codeword group used by the UE for uplink signal transmission, and instructs the UE to the codeword group.
  • the UE sends only a set of candidate values in the codeword group expected by the UE to the base station, and the base station assumes that the codeword group when the UE actually transmits an uplink signal is the UE sends the codeword group expected by the UE to the base station .
  • the UE sends to the base station a (or preset) codeword group generated by the UE according to a preset rule for transmitting the uplink signal.
  • a codeword group generated by the UE according to a preset rule for transmitting the uplink signal.
  • the UE sends a determination rule of the codeword group desired by the UE to the base station; the UE sends a parameter that the UE expects to determine the codeword group to the base station, and so on.
  • the base station receives the uplink signal and related information (such as a demodulation reference signal of the uplink signal) according to the codeword group used by the UE for transmitting the uplink signal sent by the UE.
  • the embodiments of the present disclosure can introduce a phase offset based on the reference precoding matrix, thereby realizing the delay processing of the uplink signal, and introducing the transmit diversity gain, which can improve the fast channel change or the terminal antenna. Uplink transmission performance when the phase difference or power difference between two channels changes rapidly.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1, and in the process of delay processing the uplink signal on multiple antenna ports, W 1 (i ) Perform precoding processing on the data symbols in which uplink signals are mapped into or between subbands, and implement a cyclic delay processing by using the value of W 1 (i) to change cyclically.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1, and when cyclic delay processing is performed between the subbands, all data symbols mapped to the same subband correspond to
  • B is an integer greater than or equal to 1
  • the value of n 2 increases or decreases with the increase of the frequency corresponding to the subband; when the cyclic delay processing is performed in the subband, the value of n 2 is based on the data symbol x (j) (i) The frequency domain position of the corresponding resource unit in the subband in which it is located is determined, and the value of n 2 increases or decreases as the frequency of the resource unit corresponding to the data symbol increases.
  • the r 1 and r 2 are numbers of a precoding matrix group, respectively.
  • an embodiment of the present disclosure further provides another uplink transmission method, which is applied to a terminal and includes:
  • step 51 the codewords in the first candidate codeword set are cyclically used, and the uplink signals are precoded on multiple antenna ports and then sent.
  • the uplink signal may be one or more of PUSCH, PUCCH, DMRS of PUSCH, and DMRS of PUCCH.
  • the uplink signal may be one or more of PUSCH, PUCCH, DMRS of PUSCH, and DMRS of PUCCH.
  • embodiments of the present disclosure are not limited to the above signals.
  • the terminal performs precoding processing on the uplink signal by using the codewords in the first candidate codeword set cyclically, and a transmission diversity gain may be introduced to improve the fast channel change or the terminal antenna Uplink transmission performance when the phase or power difference changes rapidly.
  • the terminal may specifically perform the following processing in the foregoing step 51:
  • the terminal can use the following formula to precode the data stream of the uplink signal:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, and v represents the number of data streams;
  • P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • W 0 (i) represents a reference precoding of dimension P ⁇ ⁇ Matrix;
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, p represents the serial number of the antenna port;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T.
  • the first candidate codeword set may be a set of some or all codewords transmitted by the P stream under the P port in the uplink codebook.
  • the terminal selects a codeword from the codewords in the first candidate codeword set as
  • the first candidate codeword set is all the codewords transmitted by the P stream under the P port in the uplink codebook.
  • the uplink codebook can refer to the definition of related standards.
  • the first candidate codeword set B (n) for two antenna ports is as follows:
  • a candidate set of D (i) is as follows:
  • the terminal can use the following formula to precode the data stream of the uplink signal:
  • x (u) (i) represents the data symbol with the sequence number i in the data stream with the sequence number u of the uplink signal, and v represents the number of data streams; P represents the antenna corresponding to the uplink signal configured for the terminal.
  • the reference precoding matrix is a precoding matrix indicated by the base station for the terminal through TPMI; or the reference precoding matrix is a precoding matrix that is predefined; or the reference precoding matrix is an uplink code A precoding matrix selected in this book.
  • the scheduling bandwidth of the uplink signal includes a total of B subbands with sequence numbers from 0 to B-1, where B is an integer greater than or equal to 1, then:
  • the codewords in the first candidate codeword set can be recycled, and the uplink signal is pre-coded on multiple antenna ports in the subband.
  • the serial number of the data symbol is L 1
  • q 1 mod (M 2 , L 1 ). or,
  • M 2 is the number of code words in the first candidate code word set.
  • the terminal may receive and send instruction information used to instruct the uplink signal to perform predetermined processing on multiple antenna ports, where the predetermined processing includes performing uplink signal processing on the multiple antenna ports during the precoding process. Perform delay processing or recycle codebooks in a candidate codebook set, and perform precoding processing on uplink signals on multiple antenna ports. Then, the terminal executes the related processing shown in FIG. 4 or FIG. 5 according to the instruction information.
  • FIG. 4 or FIG. 5 in the embodiment of the present disclosure may be applied in the following scenarios, for example:
  • the terminal is configured with codebook-based uplink signal transmission, and the coherent transmission capability of the terminal does not match the codeword or codebook subset limit parameter configured by the base station.
  • the foregoing first scenario may further include:
  • the terminal is configured with a codebook-based uplink signal transmission, and the terminal has a partially coherent transmission capability or a non-coherent transmission capability;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal has non-coherent transmission capabilities, and the codeword corresponding to the TPMI indicated by the base station for the terminal is a partially coherent transmission codeword or a fully coherent transmission codeword. ;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal has a partially coherent transmission capability, and the codeword corresponding to the TPMI indicated by the base station for the terminal is a fully coherent transmission codeword;
  • the terminal is configured with a codebook-based uplink signal transmission, and the terminal has a terminal with partially coherent transmission capabilities, and the codebook subset limit parameter indicated by the base station for the terminal is fully coherent transmission;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal has non-coherent transmission capability, and the codebook subset limit parameter indicated by the base station for the terminal is partial coherent transmission or full coherent transmission.
  • the terminal is configured for codebook-based uplink signal transmission, and the terminal is configured for single-stream transmission.
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal is configured for single-stream transmission, and the coherent transmission capability of the terminal does not match the codeword or codebook subset limit parameter configured by the base station .
  • the foregoing third scenario may further include:
  • the terminal When the terminal is configured with a codebook-based uplink signal transmission scheme, and the terminal has part of a coherent transmission capability or a non-coherent transmission capability, and the base station instructs the terminal to perform single-stream transmission;
  • the terminal is configured with a codebook-based uplink signal transmission scheme, and the terminal has non-coherent transmission capabilities, and the codeword corresponding to the TPMI indicated by the base station for the terminal corresponds to single-stream transmission and is partially coherent. Codeword or fully coherent transmission codeword;
  • the terminal is configured to perform codebook-based uplink transmission, and the terminal has partial coherent transmission capabilities, and the codebook subset restriction parameter indicated by the base station for the terminal indicates full coherent transmission;
  • the terminal is configured with codebook-based uplink transmission, and the terminal has non-coherent transmission capabilities, and the codebook subset limit parameter indicated by the base station for the terminal is partially coherent transmission or fully coherent transmission and the base station instructs the terminal Perform single stream transmission.
  • the base station is allowed to indicate a codeword for the terminal that exceeds the terminal's coherent transmission capability, and / or the codebook subset limit parameter indicated by the base station to the terminal exceeds the terminal's coherent transmission capability.
  • the base station can indicate the codebook subset limitation to the UE through the high-level parameter codebookSubset in the RRC signaling.
  • the candidate values of the codebookSubset include ⁇ fullyAndPartialAndNonCoherent, partialAndNonCoherent, nonCoherent ⁇ . Take the following uplink codebook defined in the current version of the 3GPP TS38.211 protocol as an example.
  • the codewords in the uplink codebook are divided into three categories, which are: fully coherent transmission, partially coherent transmission, and non-coherent transmission. Among them, any column in the partially coherent transmission codeword only corresponds to a non-zero element belonging to the same coherent transmission antenna group (in the 3GPP NR system, the first and third antennas are a coherent transmission antenna group, and the second and fourth antennas are Is another coherent transmission antenna group); any column in the non-coherent transmission codeword has only non-zero elements corresponding to one antenna; at least one column in the all-coherent transmission codeword has all elements non-zero.
  • the following table lists the uplink codebooks in the 3GPP NR system, and gives the specific codeword types.
  • the TPMI indicated by the base station to the terminal can be any codeword in the codebook;
  • the TPMI indicated by the base station to the terminal can only be a codebook Codewords that are fully coherently transmitted or partially coherently transmitted;
  • the TPMI indicated by the base station to the terminal can only be codewords that are not coherently transmitted in the codebook.
  • codebookSubset if the value of codebookSubset is partialAndNonCoherent, and the TPMI indicated by the base station to the terminal is a codeword that is fully coherently transmitted in the codebook, it is considered that the codeword indicated by the base station exceeds the codebook subset limit parameter.
  • the codeword corresponding to the value when the value of codebookSubset is nonCoherent, the TPMI indicated by the base station to the terminal is a codeword that is fully coherent or partially coherent in the codebook. The codeword corresponding to the value of the parameter.
  • the TPMI indicated by the base station to the terminal is a codeword that is fully coherent or partially coherent in the codebook, the The codeword exceeds the terminal's coherent transmission capability (or the terminal's coherent transmission capability does not match the codeword indicated by the base station); when the coherent transmission capability reported by the terminal is partially coherent (the parameter push-TransCoherence is partialNonCoherent), The TPMI indicated by the terminal is a codeword that is fully coherently transmitted in the codebook.
  • the codeword indicated by the base station is considered to exceed the coherent transmission capability of the terminal (or the coherent transmission capability of the terminal does not match the codeword indicated by the base station).
  • the codebookSubset sent by the base station to the terminal is partialAndNonCoherent or fullyAndPartialAndNonCoherent, the codebook subset configured by the base station is considered to exceed the coherence of the terminal.
  • codebookSubset is fullyAndPartialAndNonCoherent, it is considered that the codebook subset limit configured by the base station exceeds the coherent transmission capability of the terminal (or, the coherent transmission capability of the terminal does not match the codebook subset limit parameter configured by the base station).
  • codewords with TPMI index 0 to 1 are codewords for non-coherent transmission; other codewords are codewords for partially coherent transmission.
  • Table 6.3.1.5-1 Precoding matrix for single-layer transmission using two antenna ports.
  • codewords with TPMI index 0 to 3 are codewords for non-coherent transmission; codewords with TPMI index 4 to 11 are codewords for partially coherent transmission; other codewords are codewords for fully coherent transmission. .
  • Table 6.3.1.5-2 Precoding matrix for single-layer transmission using four antenna ports with transform precoding enabled.
  • codewords with TPMI index 0 to 3 are codewords for non-coherent transmission; codewords with TPMI index 4 to 11 are codewords for partially coherent transmission; other codewords are codewords for fully coherent transmission. .
  • Table 6.3.1.5-3 Precoding matrix for single-layer transmission using four antenna ports with transform precoding disabled.
  • a codeword with a TPMI index of 0 is a codeword for non-coherent transmission
  • a codeword with a TPMI index of 1 to 2 is a codeword for fully coherent transmission.
  • Table 6.3.1.5-4 Precoding matrix for two-layer transmission using two antenna ports with transform precoding disabled.
  • codewords with TPMI index 0 to 5 are codewords for non-coherent transmission; codewords with TPMI index 6 to 13 are codewords for partially coherent transmission; other codewords are codewords for fully coherent transmission. .
  • Table 6.3.1.5-5 Precoding matrix for two-layer transmission using four antenna ports with transform precoding disabled.
  • the codeword with TPMI index 0 is the codeword for non-coherent transmission; the codeword with TPMI index 1-2 is the codeword for partially coherent transmission; the other codewords are the codewords for fully coherent transmission.
  • Table 6.3.1.5.4-6 Precoding matrix for three-layer transmission using four antenna ports with transform precoding disabled.
  • the codeword with TPMI index 0 is the codeword for non-coherent transmission; the codeword with TPMI index 1-2 is the codeword for partially coherent transmission; the other codewords are the codewords for fully coherent transmission.
  • Table 6.3.1.5-7 Precoding matrix for four-layer transmission using four antenna ports with transform precoding disabled.
  • a scheduling method for uplink transmission when applied to a base station side, includes:
  • Step 61 Determine scheduling information of the uplink signal according to the terminal's transmission scheme for the uplink signal.
  • the transmission scheme includes: delaying the uplink signals on multiple antenna ports, or cyclically using the codebook in a candidate codebook set to precode the uplink signals on multiple antenna ports.
  • the uplink signal may be one or more of PUSCH, PUCCH, DMRS of PUSCH, and DMRS of PUCCH.
  • the scheduling information of the uplink signal includes information such as MCS, transmission precoding matrix indication (TPMI), number of transmission layers, and corresponding SRS resource indication.
  • delay processing of the uplink signal on multiple antenna ports is the uplink transmission scheme of the terminal shown in FIG. 4 above; the cycle utilizes a candidate codebook set
  • the codebook performs precoding processing on uplink signals on multiple antenna ports, that is, the uplink transmission scheme of the terminal shown in FIG. 5 above.
  • the delay processing of the uplink signal on multiple antenna ports or the recycling of codebooks in a candidate codebook set and the precoding processing of the uplink signal on multiple antenna ports can be performed by any of the following: One way to achieve:
  • W 1 (i) represents a candidate precoding matrix with a predetermined dimension P ⁇ ⁇ A precoding matrix in a precoding matrix group in the set W 1 s (i); y (p) (i) represents a symbol corresponding to x (i) mapped to the antenna port p, and p represents the serial number of the antenna port;
  • determining the scheduling information of the uplink signal according to the transmission scheme of the terminal for the uplink signal includes: obtaining the equivalent uplink channel by using the second formula, and determining the scheduling information of the uplink signal by using the equivalent uplink channel.
  • H (i) is the uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink channel state information (CSI) information acquisition, and H (i) 'is the base station's The equivalent channel of the uplink channel corresponding to the resource unit with the sequence number i obtained from the reference signal obtained from the uplink CSI;
  • D (i) is a square matrix with the dimension P ⁇ P corresponding to the resource unit with the sequence number i, where P represents The number of antenna ports corresponding to the uplink signal configured for the terminal;
  • W (i) is a reference precoding matrix used by the base station to calculate an equivalent channel corresponding to the resource unit with the sequence number i, in the same subband All resource units correspond to the same D (i).
  • H (i) is an uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition Corresponding to the uplink channel of the resource unit with the sequence number i;
  • W 1 (i) represents the precoding matrix W 1 corresponding to the resource unit i in the codeword set W 1 s (i);
  • the base station may also use a scheme corresponding to the terminal's precoding scheme for the uplink signal to detect the uplink signal. Specifically, the base station may use the second formula to obtain an equivalent uplink channel, and use the equivalent uplink channel to detect the uplink signal.
  • H (i) is the uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition.
  • the equivalent channel of the uplink channel corresponding to the resource unit with the sequence number i; D (i) is a square matrix with the dimension P ⁇ P corresponding to the resource unit with the sequence number i, where P represents the uplink configured for the terminal The number of antenna ports corresponding to the signal; W (i) is the reference precoding matrix used by the base station to calculate the equivalent channel corresponding to the resource unit with the number i.
  • All resource units in the same subband correspond to the same D ( i), there is a predetermined rule between the value of D (i) and the number or frequency of the subband, or the value of D (i) is determined according to the frequency domain position of the resource unit with the sequence number i in the subband;
  • H (i) is an uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition Corresponding to the uplink channel of the resource unit with the sequence number i;
  • W 1 (i) represents the precoding matrix W 1 corresponding to the resource unit i in the codeword set W 1 s (i);
  • the base station may further send an instruction message for determining the D (i) to the terminal, so that the terminal determines D (i) according to the instruction message.
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; ⁇ 1 , ⁇ 2 or ⁇ 3 are all predetermined angle values; n 1 is an integer greater than 0.
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is determined according to a predetermined first angle threshold and is not greater than the first angle threshold; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined according to the second angle threshold sent, and is not greater than the second angle threshold.
  • the method further includes: sending the second angle threshold to the terminal. ;or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value agreed in the agreement.
  • the base station may indicate the value of ⁇ 1 , ⁇ 2 or ⁇ 3 to the terminal through signaling.
  • the W (i) or W 1 (i) is a precoding matrix indicated by the base station to the terminal through TPMI; or, the W (i) or W 1 (i) is a predefined precoding matrix.
  • the base station may further send, to the terminal, instruction information used to instruct the uplink signal to perform predetermined processing on multiple antenna ports, where the predetermined processing includes performing the precoding processing on multiple antennas.
  • the uplink signal is delayed processed on the port or the codebook in a candidate codebook set is cyclically used to precode the uplink signal on multiple antenna ports.
  • the codewords in the uplink codebook can be divided into three types, which are: fully coherent transmission codewords, partially coherent transmission codewords, and non-coherent transmission codewords.
  • any column in the partially coherent transmission codeword only corresponds to a non-zero element belonging to the same coherent transmission antenna group (in the 3GPP NR system, the first and third antennas are a coherent transmission antenna group, and the second and fourth antennas are Is another coherent transmission antenna group);
  • any column in the non-coherent transmission codeword has only non-zero elements corresponding to one antenna; at least one column in the all-coherent transmission codeword has all elements non-zero.
  • the uplink signals are mainly described above by using the PUSCH as an example. It should be understood that the methods of the embodiments of the present disclosure are also applicable to uplink signals such as PUCCH, DMRS of PUSCH, DMRS, and SRS of PUCCH.
  • an embodiment of the present disclosure further provides a device for implementing the above method.
  • the terminal 70 includes a processor 701, a transceiver 702, a memory 703, a user interface 704, and a bus interface, where:
  • the terminal 700 further includes a computer program stored on the memory 703 and executable on the processor 701.
  • the processor 701 is configured to read a program in a memory and execute the following process: delay processing an uplink signal on multiple antenna ports;
  • the transceiver 702 is configured to send an uplink signal after delay processing.
  • the bus architecture may include any number of interconnected buses and bridges, and one or more processors specifically represented by the processor 701 and various circuits of the memory represented by the memory 703 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein.
  • the bus interface provides an interface.
  • the transceiver 702 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.
  • the user interface 704 may also be an interface capable of externally connecting and connecting the required devices.
  • the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 701 when performing operations.
  • the processor 701 is further configured to perform precoding processing on a data stream of an uplink signal by using the following formula:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, v represents the number of data streams;
  • D (i) represents the dimension corresponding to x (i) is P ⁇ A square matrix of P, where P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T ;
  • W 0 (i) represents the reference precoding matrix of dimension P ⁇ ⁇ corresponding to x (i);
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, p Indicates the serial number of the antenna port.
  • the D (i) is a square matrix related to the terminal's coherent transmission capability
  • the D (i) is a pair of angular arrays, and each element on the main diagonal corresponds to a different phase offset;
  • the D (i) When the terminal capability is non-coherent transmission, the D (i) is a pair of angular arrays, and each element on the main diagonal corresponds to a different phase offset; when the terminal capability is full-coherent transmission, the D (i) is a unit array; when the terminal capability is partially coherent transmission, the D (i) is a pair of angular arrays, and the elements corresponding to the same coherent transmission antenna group have the same phase offset, corresponding to different Elements of a coherent transmission antenna group have different phase offsets.
  • the value of the element d (i) l, m in the lth and mth columns in D (i) is determined in the following manner:
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; ⁇ 1 , ⁇ 2 or ⁇ 3 are all predetermined angle values; n 1 is an integer greater than 0.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • D (i) corresponding to each x (i) mapped to the same subband is the same, and there is a predetermined rule between the value of D (i) and the number or frequency of the subband; or,
  • the value of D (i) corresponding to each x (i) mapped to the same subband is determined according to the frequency domain position of the resource unit corresponding to the x (i) in the subband.
  • the transceiver 702 is further configured to receive an instruction message sent by a base station for determining the D (i);
  • the processor 701 is further configured to determine D (i) by using the instruction message.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • the value of n 1 is determined according to the frequency domain position of the resource unit corresponding to x (i) in the subband, and the value of n 1 The value increases or decreases as the frequency of the resource unit corresponding to x (i) increases.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • n 1 is equal to the number of the subband in which the resource unit to be mapped by x (i) is located; or,
  • n 1 is equal to the number x (i) of data symbols in the sub-band.
  • the processor 701 is further configured to perform precoding processing on a data stream of an uplink signal by using the following formula:
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • W 1 (i) corresponding to each x (i) mapped to the same subband is the same, and there is a predetermined rule between the value of W 1 (i) and the number or frequency of the subband; or,
  • the value of W 1 (i) corresponding to each x (i) mapped to the same subband is determined according to the frequency domain position of the resource unit corresponding to the x (i) in the subband.
  • the transceiver 702 is further configured to receive an indication message for determining the D q sent by the base station; and the processor 701 is further configured to determine D q by using the indication message.
  • any codeword D q in the first candidate codeword set is a pair of diagonal arrays, and each element on the main diagonal corresponds to a different phase offset, respectively;
  • any codeword D in the first candidate codeword set is a pair of diagonal arrays, and each element on the main diagonal corresponds to a different phase offset; when the terminal capability is fully coherent transmission, any codeword D in the first candidate codeword set is a unit matrix; when the terminal capability is partially coherent transmission, any one of the first candidate codeword combinations
  • the code words D q are all a pair of angular arrays, and elements corresponding to the same coherent transmission antenna group have the same phase offset, and elements corresponding to different coherent transmission antenna groups have different phase offsets.
  • the value of the element d l, m in the l th row and m th column in D q is determined in the following manner:
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; the ⁇ 1 , ⁇ 2 or ⁇ 3 are all a predetermined angle value; the value of n 2 ranges from 1 to M, where Let M be an integer greater than 1.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • All data symbols mapped to the same subband correspond to the same n 2 , and the value of n 2 increases or decreases as the frequency corresponding to the subband increases; or,
  • n 2 is determined according to the frequency domain position of the resource unit corresponding to the data symbol x (j) (i) in the subband in which it is located. The value of n 2 varies with the frequency of the resource unit corresponding to the data symbol. Increment and decrement.
  • the scheduling bandwidth of the uplink signal includes a total of B subbands with sequence numbers from 0 to B-1, where B is an integer greater than or equal to 1.
  • M 1 and M 1 are respectively the number of precoding matrices in the corresponding precoding matrix group, and r 1 and r 2 are numbers of the precoding matrix group, respectively.
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined by the terminal; or
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined by the terminal according to a predetermined first angle threshold, and is not greater than the first angle threshold; or
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined by the terminal according to a second angle threshold sent by a base station, and is not greater than the second angle threshold; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value agreed in the agreement.
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is a value determined according to a scheduling bandwidth of an uplink signal; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value determined according to a subband bandwidth in a scheduling bandwidth of an uplink signal
  • ⁇ 1 , ⁇ 2 or ⁇ 3 The value of ⁇ 1 , ⁇ 2 or ⁇ 3 is indicated to the terminal by the base station through signaling.
  • the reference precoding matrix is a precoding matrix indicated by the base station to the terminal through TPMI; or
  • the reference precoding matrix is a predefined one
  • the reference precoding matrix is a precoding matrix selected from an uplink codebook.
  • the uplink signal is one or more of PUSCH, PUCCH, DMRS of PUSCH, and DMRS of PUCCH.
  • the terminal is configured with codebook-based uplink signal transmission, and the coherent transmission capability of the terminal does not match the codeword or codebook subset limit parameter configured by the base station;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal is configured for single-stream transmission;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal is configured for single-stream transmission, and the coherent transmission capability of the terminal does not match the codeword or codebook subset limit parameter configured by the base station.
  • the transceiver 702 is further configured to receive instruction information sent by a base station and used to instruct the uplink signal to perform predetermined processing on multiple antenna ports, where the predetermined processing includes The uplink signal is delayed processed on the antenna port or the codebook in a candidate codebook set is cyclically used to precode the uplink signal on multiple antenna ports.
  • an embodiment of the present disclosure provides another terminal 80, including:
  • An encoding processing unit 81 configured to perform delay processing on an uplink signal on multiple antenna ports
  • the sending unit 82 is configured to send an uplink signal after the delay processing.
  • the encoding processing unit 81 is further configured to perform precoding processing on the data stream of the uplink signal by using the following formula:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, v represents the number of data streams;
  • D (i) represents the dimension corresponding to x (i) is P ⁇ A square matrix of P, where P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T ;
  • W 0 (i) represents the reference precoding matrix of dimension P ⁇ ⁇ corresponding to x (i);
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, p Indicates the serial number of the antenna port.
  • the D (i) is a square matrix related to the terminal's coherent transmission capability
  • the D (i) is a pair of angular arrays, and each element on the main diagonal corresponds to a different phase offset;
  • the D (i) When the terminal capability is non-coherent transmission, the D (i) is a pair of angular arrays, and each element on the main diagonal corresponds to a different phase offset; when the terminal capability is full-coherent transmission, the D (i) is a unit array; when the terminal capability is partially coherent transmission, the D (i) is a pair of angular arrays, and the elements corresponding to the same coherent transmission antenna group have the same phase offset, corresponding to different Elements of a coherent transmission antenna group have different phase offsets.
  • the value of the element d (i) l, m in the lth and mth columns in D (i) is determined in the following manner:
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; ⁇ 1 , ⁇ 2 or ⁇ 3 are all predetermined angle values; n 1 is an integer greater than 0.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • D (i) corresponding to each x (i) mapped to the same subband is the same, and there is a predetermined rule between the value of D (i) and the number or frequency of the subband; or,
  • the value of D (i) corresponding to each x (i) mapped to the same subband is determined according to the frequency domain position of the resource unit corresponding to the x (i) in the subband.
  • the transceiver unit 82 is further configured to receive an indication message sent by a base station for determining the D (i);
  • the encoding processing unit 81 is further configured to determine D (i) by using the instruction message.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • the value of n 1 is determined according to the frequency domain position of the resource unit corresponding to x (i) in the subband, and the value of n 1 The value increases or decreases as the frequency of the resource unit corresponding to x (i) increases.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • n 1 is equal to the number of the subband in which the resource unit to be mapped by x (i) is located; or,
  • n 1 is equal to the number x (i) of data symbols in the sub-band.
  • the encoding processing unit 81 is further configured to perform precoding processing on the data stream of the uplink signal by using the following formula:
  • W 1 (i) corresponding to each x (i) mapped to the same subband is the same, and there is a predetermined rule between the value of W 1 (i) and the number or frequency of the subband; or,
  • the value of W 1 (i) corresponding to each x (i) mapped to the same subband is determined according to the frequency domain position of the resource unit corresponding to the x (i) in the subband.
  • the transceiver unit 82 is further configured to receive an instruction message for determining the D q sent by the base station; and the encoding processing unit 81 is further configured to determine D q by using the instruction message.
  • any codeword D q in the first candidate codeword set is a pair of diagonal arrays, and each element on the main diagonal corresponds to a different phase offset, respectively;
  • any codeword D in the first candidate codeword set is a pair of diagonal arrays, and each element on the main diagonal corresponds to a different phase offset; when the terminal capability is fully coherent transmission, any codeword D in the first candidate codeword set is a unit matrix; when the terminal capability is partially coherent transmission, any one of the first candidate codeword combinations
  • the code words D q are all a pair of angular arrays, and elements corresponding to the same coherent transmission antenna group have the same phase offset, and elements corresponding to different coherent transmission antenna groups have different phase offsets.
  • the value of the element d l, m in the l th row and m th column in D q is determined in the following manner:
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; the ⁇ 1 , ⁇ 2 or ⁇ 3 are all a predetermined angle value; the value of n 2 ranges from 1 to M, where Let M be an integer greater than 1.
  • the scheduling bandwidth of the uplink signal includes B subbands, where B is an integer greater than or equal to 1;
  • All data symbols mapped to the same subband correspond to the same n 2 , and the value of n 2 increases or decreases as the frequency corresponding to the subband increases; or,
  • n 2 is determined according to the frequency domain position of the resource unit corresponding to the data symbol x (j) (i) in the subband in which it is located. The value of n 2 varies with the frequency of the resource unit corresponding to the data symbol. Increment and decrement.
  • the scheduling bandwidth of the uplink signal includes a total of B subbands with sequence numbers from 0 to B-1, where B is an integer greater than or equal to 1.
  • M 1 and M 1 are respectively the number of precoding matrices in the corresponding precoding matrix group, and r 1 and r 2 are numbers of the precoding matrix group, respectively.
  • the embodiment of the present disclosure also provides another terminal, which has a structure similar to that of the terminal shown in FIG. 7 and includes: a processor, a transceiver, a memory, a user interface, and a bus interface, where:
  • the terminal further includes: a computer program stored on the memory and executable on the processor.
  • the processor is configured to read a program in a memory and execute the following process: cyclically utilize codewords in a first candidate codeword set, and perform precoding processing on uplink signals on multiple antenna ports;
  • the transceiver is configured to send an uplink signal after precoding processing.
  • the bus architecture may include any number of interconnected buses and bridges, and one or more processors specifically represented by a processor and various circuits of a memory represented by a memory are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein.
  • the bus interface provides an interface.
  • a transceiver may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.
  • the user interface may also be an interface capable of externally connecting and connecting the required devices.
  • the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor is responsible for managing the bus architecture and general processing.
  • the memory can store data used by the processor when performing operations.
  • the dimension of the codeword in the first candidate codeword set is P ⁇ P
  • the processor is further configured to:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, and v represents the number of data streams;
  • P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • W 0 (i) represents a reference precoding of dimension P ⁇ ⁇ Matrix;
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, p represents the serial number of the antenna port;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T ;
  • the dimensions of the codewords in the first candidate codeword set are P ⁇ ⁇ , and the processor is further configured to:
  • x (u) (i) represents the data symbol with the sequence number i in the data stream with the sequence number u of the uplink signal, and v represents the number of data streams; P represents the antenna corresponding to the uplink signal configured for the terminal.
  • the scheduling bandwidth of the uplink signal includes a total of B subbands with sequence numbers from 0 to B-1, where B is an integer greater than or equal to 1.
  • M 2 is the number of code words in the first candidate code word set.
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined by the terminal; or
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined by the terminal according to a predetermined first angle threshold, and is not greater than the first angle threshold; or
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined by the terminal according to a second angle threshold sent by a base station, and is not greater than the second angle threshold; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value agreed in the agreement.
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is a value determined according to a scheduling bandwidth of an uplink signal; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value determined according to a subband bandwidth in a scheduling bandwidth of an uplink signal
  • ⁇ 1 , ⁇ 2 or ⁇ 3 The value of ⁇ 1 , ⁇ 2 or ⁇ 3 is indicated to the terminal by the base station through signaling.
  • the reference precoding matrix is a precoding matrix indicated by the base station to the terminal through TPMI; or
  • the reference precoding matrix is a predefined one
  • the reference precoding matrix is a precoding matrix selected from an uplink codebook.
  • the uplink signal is one or more of PUSCH, PUCCH, DMRS of PUSCH, and DMRS of PUCCH.
  • the terminal is configured with codebook-based uplink signal transmission, and the coherent transmission capability of the terminal does not match the codeword or codebook subset limit parameter configured by the base station;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal is configured for single-stream transmission;
  • the terminal is configured with codebook-based uplink signal transmission, and the terminal is configured for single-stream transmission, and the coherent transmission capability of the terminal does not match the codeword or codebook subset limit parameter configured by the base station.
  • the transceiver is further configured to receive instruction information sent by a base station for instructing to perform predetermined processing on uplink signals on multiple antenna ports, where the predetermined processing includes performing the precoding process on multiple antennas.
  • the uplink signal is delayed processed on the port or the codebook in a candidate codebook set is cyclically used to precode the uplink signal on multiple antenna ports.
  • An embodiment of the present disclosure further provides another terminal, whose structure is similar to the structure described in FIG. 8 and includes:
  • An encoding processing unit configured to recycle the codewords in the first candidate codeword set, and perform precoding processing on the uplink signal on multiple antenna ports;
  • the transceiver unit is configured to send an uplink signal after precoding processing.
  • the dimension of the codeword in the first candidate codeword set is P ⁇ P
  • the encoding processing unit is further configured to:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, and v represents the number of data streams;
  • P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • W 0 (i) represents a reference precoding of dimension P ⁇ ⁇ Matrix;
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, p represents the serial number of the antenna port;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T ;
  • the dimensions of the codewords in the first candidate codeword set are P ⁇ ⁇ , and the encoding processing unit is further configured to:
  • x (u) (i) represents the data symbol with the sequence number i in the data stream with the sequence number u of the uplink signal, and v represents the number of data streams; P represents the antenna corresponding to the uplink signal configured for the terminal.
  • the scheduling bandwidth of the uplink signal includes a total of B subbands with sequence numbers from 0 to B-1, where B is an integer greater than or equal to 1.
  • M 2 is the number of code words in the first candidate code word set.
  • an embodiment of the present disclosure provides a schematic structural diagram of a base station 900, including a processor 901, a transceiver 902, a memory 903, and a bus interface, where:
  • the base station 900 further includes: a computer program stored in the memory 903 and executable on the processor 901.
  • the processor 901 is configured to read a program in a memory and execute the following process: determining scheduling information of an uplink signal according to a transmission scheme of an uplink signal by a terminal;
  • the transmission scheme includes: performing delay processing on uplink signals on multiple antenna ports during the precoding process, or recycling codebooks in a candidate codebook set to recycle uplink signals on multiple antenna ports.
  • the signal is pre-coded.
  • the bus architecture may include any number of interconnected buses and bridges, and one or more processors specifically represented by the processor 901 and various circuits of the memory represented by the memory 903 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein.
  • the bus interface provides an interface.
  • the transceiver 902 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.
  • the processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 901 when performing operations.
  • the scheduling information of the uplink signal includes at least one of an MCS, a transmission precoding matrix indication TPMI, a number of transmission layers, and a corresponding SRS resource indication.
  • the processor 901 is further configured to detect the uplink signal by using a scheme corresponding to a precoding scheme for the uplink signal by the terminal.
  • the delay processing of the uplink signal on multiple antenna ports or the recycling of codebooks in a candidate codebook set to precoding the uplink signals on multiple antenna ports is as follows:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, v represents the number of data streams;
  • D (i) represents the dimension corresponding to x (i) is P ⁇ A square matrix of P, where P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T ;
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, and p represents the serial number of the antenna port; or,
  • W 1 (i) represents a candidate precoding matrix with a predetermined dimension P ⁇ ⁇ A precoding matrix in a precoding matrix group in the set W 1 s (i); y (p) (i) represents a symbol corresponding to x (i) mapped to the antenna port p, and p represents the serial number of the antenna port;
  • the processor 901 is further configured to use a second formula to obtain an equivalent uplink channel, and use the equivalent uplink channel to determine scheduling information of an uplink signal;
  • the second formula is:
  • H (i) is the uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for the uplink channel state information CSI (Channel State Information), and H (i) 'is the base station's The equivalent channel of the uplink channel corresponding to the resource unit with the sequence number i obtained by the reference signal obtained by the uplink CSI;
  • D (i) is a square matrix with the dimension P ⁇ P corresponding to the resource unit with the sequence number i, where P is expressed as The number of antenna ports corresponding to the uplink signal configured by the terminal;
  • W (i) is a reference precoding matrix used by the base station to calculate an equivalent channel corresponding to the resource unit with the sequence number i;
  • the resource unit corresponds to the same D (i).
  • H (i) is an uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition Corresponding to the uplink channel of the resource unit with the sequence number i;
  • W 1 (i) represents the precoding matrix W 1 corresponding to the resource unit i in the codeword set W 1 s (i);
  • the processor 901 is further configured to use a second formula to obtain an equivalent uplink channel and use the equivalent uplink channel to detect the uplink signal; the second formula is:
  • H (i) is the uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition
  • D (i) is a square matrix with the dimension P ⁇ P corresponding to the resource unit with the sequence number i, where P represents the uplink configured for the terminal
  • W (i) is the reference precoding matrix used by the base station to calculate the equivalent channel corresponding to the resource unit with the number i.
  • All resource units in the same subband correspond to the same D ( i), there is a predetermined rule between the value of D (i) and the number or frequency of the subband, or the value of D (i) is determined according to the frequency domain position of the resource unit with the sequence number i in the subband;
  • H (i) is an uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition Corresponding to the uplink channel of the resource unit with the sequence number i;
  • W 1 (i) represents the precoding matrix W 1 corresponding to the resource unit i in the codeword set W 1 s (i);
  • the transceiver 902 is configured to send an instruction message for determining the D (i) to a terminal.
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; ⁇ 1 , ⁇ 2 or ⁇ 3 are all predetermined angle values; n 1 is an integer greater than 0.
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined according to a predetermined first angle threshold and is not greater than the first angle threshold; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined according to the second angle threshold sent, and is not greater than the second angle threshold.
  • the transceiver 902 is further configured to send the first angle to the terminal. Two-angle threshold; or,
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value agreed in the agreement.
  • the transceiver 902 is further configured to indicate the value of ⁇ 1 , ⁇ 2, or ⁇ 3 to the terminal through signaling.
  • the W (i) or W 1 (i) is a precoding matrix indicated by the base station to the terminal through TPMI; or
  • the W (i) or W 1 (i) is a predefined precoding matrix.
  • the transceiver 902 is further configured to send, to the terminal, instruction information used to instruct the uplink signal to perform predetermined processing on multiple antenna ports, where the predetermined processing includes performing the precoding processing on multiple antennas.
  • the uplink signal is delayed processed on the port or the codebook in a candidate codebook set is cyclically used to precode the uplink signal on multiple antenna ports.
  • an embodiment of the present disclosure provides another structure of a base station 100.
  • the base station 100 includes:
  • a determining unit 101 configured to determine scheduling information of an uplink signal according to a transmission scheme of the uplink signal by the terminal;
  • the transmission scheme includes: performing delay processing on uplink signals on multiple antenna ports during the precoding process, or recycling codebooks in a candidate codebook set to recycle uplink signals on multiple antenna ports.
  • the signal is pre-coded.
  • the scheduling information of the uplink signal includes at least one of an MCS, a transmission precoding matrix indication TPMI, a number of transmission layers, and a corresponding SRS resource indication.
  • the base station further includes:
  • the detecting unit is configured to detect the uplink signal by using a scheme corresponding to a precoding scheme of the uplink signal by the terminal.
  • the delay processing of the uplink signal on multiple antenna ports or the recycling of codebooks in a candidate codebook set to precoding the uplink signals on multiple antenna ports is as follows:
  • x (u) (i) represents the data symbol of sequence number i in the data stream of sequence number u of the uplink signal, v represents the number of data streams;
  • D (i) represents the dimension corresponding to x (i) is P ⁇ A square matrix of P, where P represents the number of antenna ports corresponding to the uplink signal configured for the terminal;
  • x (i) [x (0) (i) ... x ( ⁇ -1) (i)] T ;
  • y (p) (i) represents the symbol corresponding to x (i) mapped to the antenna port p, and p represents the serial number of the antenna port; or,
  • W 1 (i) represents a candidate precoding matrix with a predetermined dimension P ⁇ ⁇ A precoding matrix in a precoding matrix group in the set W 1 s (i); y (p) (i) represents a symbol corresponding to x (i) mapped to the antenna port p, and p represents the serial number of the antenna port;
  • the determining unit 101 is further configured to obtain an equivalent uplink channel and use the equivalent uplink channel to determine scheduling information of an uplink signal;
  • the second formula is:
  • H (i) is the uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for the uplink channel state information CSI (Channel State Information), and H (i) 'is the base station's The equivalent channel of the uplink channel corresponding to the resource unit with the sequence number i obtained by the reference signal obtained by the uplink CSI;
  • D (i) is a square matrix with the dimension P ⁇ P corresponding to the resource unit with the sequence number i, where P is expressed as The number of antenna ports corresponding to the uplink signal configured by the terminal;
  • W (i) is a reference precoding matrix used by the base station to calculate an equivalent channel corresponding to the resource unit with the sequence number i;
  • the resource unit corresponds to the same D (i).
  • H (i) is an uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition Corresponding to the uplink channel of the resource unit with the sequence number i;
  • W 1 (i) represents the precoding matrix W 1 corresponding to the resource unit i in the codeword set W 1 s (i);
  • the processor 901 is further configured to use a second formula to obtain an equivalent uplink channel and use the equivalent uplink channel to detect the uplink signal; the second formula is:
  • H (i) is the uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station based on the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station based on the reference signal used for uplink CSI acquisition
  • D (i) is a square matrix with the dimension P ⁇ P corresponding to the resource unit with the sequence number i, where P represents the uplink configured for the terminal
  • W (i) is the reference precoding matrix used by the base station to calculate the equivalent channel corresponding to the resource unit with the number i.
  • All resource units in the same subband correspond to the same D ( i), there is a predetermined rule between the value of D (i) and the number or frequency of the subband, or the value of D (i) is determined according to the frequency domain position of the resource unit with the sequence number i in the subband;
  • H (i) is an uplink channel estimation value corresponding to the resource unit with the sequence number i obtained by the base station according to the reference signal used for uplink CSI acquisition, and H (i) 'is obtained by the base station according to the reference signal used for uplink CSI acquisition Corresponding to the uplink channel of the resource unit with the sequence number i;
  • W 1 (i) represents the precoding matrix W 1 corresponding to the resource unit i in the codeword set W 1 s (i);
  • the base station further includes: a transceiver unit, configured to send an instruction message for determining the D (i) to the terminal.
  • the value of the element d (i) l, m in the lth and mth columns of D (i) or Dq is determined in the following manner:
  • a z is a coefficient corresponding to the z-th coherent transmission antenna group; ⁇ 1 , ⁇ 2 or ⁇ 3 are all predetermined angle values; n 1 is an integer greater than 0.
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined according to a predetermined first angle threshold and is not greater than the first angle threshold; or,
  • the value of ⁇ 1 , ⁇ 2 or ⁇ 3 is determined according to the second angle threshold sent, and is not greater than the second angle threshold.
  • the base station further includes:
  • a transceiver unit configured to send the second angle threshold to the terminal
  • ⁇ 1 , ⁇ 2 or ⁇ 3 is a value agreed in the agreement.
  • the transceiver unit is further configured to indicate the value of ⁇ 1 , ⁇ 2, or ⁇ 3 to the terminal through signaling.
  • the W (i) or W 1 (i) is a precoding matrix indicated by the base station to the terminal through TPMI; or
  • the W (i) or W 1 (i) is a predefined precoding matrix.
  • the transceiver unit is further configured to send, to the terminal, instruction information used to instruct the uplink signal to perform predetermined processing on multiple antenna ports, where the predetermined processing includes performing precoding processing on multiple antenna ports.
  • the uplink signal is delayed processed or the codebook in a candidate codebook set is recycled, and the uplink signal is precoded on multiple antenna ports.
  • the disclosed apparatus and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure is essentially a part that contributes to related technologies or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several
  • the instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the program may be stored in a computer-readable storage medium.
  • the program When executed, the processes of the embodiments of the methods described above may be included.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random, Access Memory, RAM).
  • the technology described in the embodiments of the present disclosure may be implemented by modules (such as procedures, functions, and the like) that perform the functions described in the embodiments of the present disclosure.
  • Software codes may be stored in a memory and executed by a processor.
  • the memory may be implemented in the processor or external to the processor.

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Abstract

本公开实施例公开了一种上行传输方法、上行传输的调度方法和设备。应用于终端的上行传输方法包括在多个天线端口上对上行信号进行延迟处理后发送。

Description

上行传输方法、上行传输的调度方法和设备
相关申请的交叉引用
本申请主张在2018年9月28日在中国提交的中国专利申请号No.201811142744.1的优先权,其全部内容通过引用包含于此。
技术领域
本公开实施例涉及通信技术领域,具体涉及一种上行传输方法、上行传输的调度方法和设备。
背景技术
基于码本的上行传输方案是基于固定码本确定上行传输预编码矩阵的多天线传输技术。第五代通信技术新无线接入技术(fifth-generation New Radio Access Technology,5G NR)系统中,基于码本的上行传输方案与长期演进(Long Term Evolution,LTE)系统中的上行空间复用技术基本原理相似,但是所采用的码本和预编码指示方式有所不同。如图1所示,NR系统中,基于码本的上行传输方案的流程包括:
1)用户设备(User Equipment,UE)向基站发送用于基于码本的上行传输方案信道状态信息(Channel State Information)获取的上行探测参考信号(Sounding Reference Signal,SRS)。
2)基站根据UE发送的SRS进行上行信道检测,对UE进行资源调度,并确定出上行传输对应的SRS资源、上行传输的层数和预编码矩阵,进一步根据预编码矩阵和信道信息,确定出上行传输的调制与编码策略(Modulation and Coding Scheme,MCS)等级,然后基站将物理上行共享信道(Physical Uplink Shared Channel,PUSCH)的资源分配和相应的MCS、传输预编码矩阵指示(Transmit Precoding Matrix Indicator,TPMI)、传输层数和对应的SRS资源指示(SRS resource indicator,SRI)通知给UE。
3)UE根据基站指示的MCS对数据进行调制编码,并利用所指示的SRI、 TPMI和传输层数确定数据发送时使用的预编码矩阵和传输层数,进而对数据进行预编码及发送。PUSCH的解调导频与PUSCH的数据采用相同的预编码方式。
4)基站根据解调导频信号估计上行信道,并进行数据检测。
在3GPP NR系统中,基于码本的上行传输方案采用如下预编码方式(第6.3.1.5节,3GPP标准文档TS38.211-f20(2018-06),2018年6月份版本):
Figure PCTCN2019105613-appb-000001
表示对PUSCH经过层映射后得到的信号符号,x (j)(i)表示第j个数据流(也称作数据层/layer)的第i个符号;v表示传输流数(数据流数);
Figure PCTCN2019105613-appb-000002
表示对应于x(i)的映射到各个天线端口上的符号,p表示天线端口的序号,y (p)(i)表示对应于x(i)的映射到天线端口i的符号。
采用如下方式对数据流进行预编码:
Figure PCTCN2019105613-appb-000003
其中,预编码矩阵W(i)的维度P×υ,
Figure PCTCN2019105613-appb-000004
P表示为UE配置的所述上行信号所对应的天线端口数。
对于UE的多入多出(Multiple Input Multiple Output,MIMO)传输,其传输天线与射频的特性与基站有较大差别,码本设计上需要充分考虑天线间的相关特性。当两个天线端口满足相干条件,即各天线单元发射通路可以调整至同功率、同相位时,UE可以通过预编码利用这两个天线端口同时进行同一层的数据传输,以获得阵列增益。然而,由于天线阵元的互耦效应、馈线差异以及射频通路的放大器相位和增益的变化等因素的影响,实际的UE天线各端口间不可避免地存在功率和相位等方面的差异。受限于成本和设计,不是所有的UE都可以将各天线端口校准至满足相干传输需求的程度。对于不能做到天线相干传输的UE,基站在计算TPMI时,UE天线间的相位差和UE接收到TPMI后进行PUSCH传输时天线间的相位差之间可能存在较大的差值,如果TPMI指示了不能相干传输的天线用于相同数据层的传输的话,终端最优的上行传输预编码可能并不是TPMI所指示的预编码,即终端使用基站通过TPMI指示的预编码进行PUSCH的传输并不能获得较好的性能。
NR系统定义了UE的三种天线相干传输能力:
1)全相干(full-coherent):所有的天线都可以相干传输;
2)部分相干(partial-coherent):同一相干传输组内的天线可以相干传输,相干传输组之间不能相干传输,每个相干传输组包含2个天线;
3)非相干(non-coherent):没有天线可以相干传输。
NR系统的上行码本中包含部分相干传输和非相干传输的码字,以用于具有部分相干传输能力或非相干传输能力的UE。其中,部分相干传输的码字中的任一列中,只有对应于属于同一个相干传输天线组的元素为非零元素,且只有该相干传输天线组的元素非零,即码字中的每列仅存在两个对应于同一个相关传输天线组的非零元素,其他元素均为零(在3GPP NR系统中,第1、3天线为一个相干传输天线组,第2、4天线为另一个相干传输天线组);非相干传输码字中的任一列只有对应于一个天线的非零元素,即码字中的每列仅存在一个非零元素,其他元素均为零。全相干传输的码字中,至少存在一列的所有元素非零。为了便于理解,表1和表2分别给出了NR系统在正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)波形下的4天线单流和双流传输时的码本。
Figure PCTCN2019105613-appb-000005
Figure PCTCN2019105613-appb-000006
表1使用CP-OFDM波形时的上行单流传输码本(4天线)
Figure PCTCN2019105613-appb-000007
表2使用CP-OFDM波形时的上行2流传输码本(4天线)
在LTE和NR系统中,采用上行MIMO的PUSCH的多天线功率分配方式为:UE将根据上行功率控制公式计算出的发送功率(在NR系统中,对应于TS 38.213-f20中第7.1.1节中的P PUSCH,b,f,c(i,j,q d,l))按照实际发送信号的端口数在基站为PUSCH所对应的传输模式配置的总端口数中的占比进行功率缩放,然后将缩放后的功率在实际发送信号的天线端口上均分。举例来说, 假设上行传输配置了4个天线端口,基站指示的预编码矩阵为
Figure PCTCN2019105613-appb-000008
UE根据PUSCH功率控制公式计算出的发送功率为P,则PUSCH的实际发送功率为P/2,其中第一个天线端口和第三个天线端口的发送功率各为P/4。这种缩放不要求UE的每个天线端口都可以达到最大发送功率,允许UE使用更低成本的射频元件实现多天线功能。
从UE性能的角度来说,当UE位于小区边缘或信道条件较差时,基站通常给UE配置一个低rank的传输,且尽可能地以最大发射功率传输数据。在NR系统的码本设计下,对于基于码本的上行传输来说,具有部分天线相干传输能力和非相干传输能力的UE在单rank传输时总是有一部分天线端口没有PUSCH的传输。因此,当前的上行MIMO多天线功率分配机制无法保证在基于码本的上行传输方案下具有部分天线相干传输能力和非相干传输能力的UE在单rank传输时可以达到最大发射功率,从而降低了UE在小区边缘时的性能,影响小区的覆盖。
可以看出,对于具有部分相干传输能力的UE和具有非相干传输能力的UE,在基于码本的上行传输方案下单流传输时,终端的发送功率不能达到最大发送功率,这将降低UE在小区边缘时的性能,影响小区的覆盖。此外,相关技术的上行传输方案在信道变化较快或终端天线间的相位差或功率差变化较快时,由于基站指示的预编码矩阵不能很好地反映信道,将有可能无法获得较好的上行传输性能。
发明内容
本公开实施例的一个目的在于提供一种上行传输方法、上行传输的调度方法和设备,通过引入发送分集增益,可以改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。
本公开实施例提供了一种上行传输方法,应用于终端,包括:
在多个天线端口上对上行信号进行延迟处理后发送。
本公开实施例还提供了另一种上行传输方法,应用于终端,包括:
循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进 行预编码处理后发送。
本公开实施例还提供了一种上行传输的调度方法,应用于基站,包括:
根据终端对上行信号的传输方案,确定上行信号的调度信息;
其中,所述传输方案包括:在多个天线端口上对上行信号进行延迟处理,或者,循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
本公开实施例提供了一种终端,包括:收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;
所述处理器,用于读取存储器中的程序,执行下列过程:在多个天线端口上对上行信号进行延迟处理;
所述收发机,用于发送经延迟处理后的上行信号。
本公开实施例还提供了另一种终端,包括:
收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;
所述处理器,用于读取存储器中的程序,执行下列过程:循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理;
所述收发机,用于发送经预编码处理后的上行信号。
本公开实施例还提供了另一种终端,包括:
编码处理单元,用于在多个天线端口上对上行信号进行延迟处理;
发送单元,用于发送经延迟处理后的上行信号。
本公开实施例还提供了另一种终端,包括:
编码处理单元,用于循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理;
发送单元,用于发送经预编码处理后的上行信号。
本公开实施例提供了一种基站,包括:收发机、存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;
所述处理器,用于读取存储器中的程序,执行下列过程:根据终端对上行信号的传输方案,确定上行信号的调度信息;
其中,所述传输方案包括:在预编码处理过程中,在多个天线端口上对 上行信号进行延迟处理,或者,循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
本公开实施例还提供了另一种基站,包括:
确定单元,用于根据终端对上行信号的传输方案,确定上行信号的调度信息;
其中,所述传输方案包括:在预编码处理过程中,在多个天线端口上对上行信号进行延迟处理,或者,循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
本公开实施例还提供了一种计算机可读存储介质,,包括指令,当所述指令在计算机运行时,使得计算机执行如上所述的上行传输方法或上行传输的调度方法。
本公开实施例提供的上行传输方法、上行传输的调度方法和设备,通过将循环预编码或CDD与UE的相干传输能力和/或基于码本/非码本上行传输方案相结合,可以通过引入发送分集增益来改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。此外,该本公开实施例可以允许基站为部分相干传输能力的UE和具有非相干传输能力的终端配置全相干的码字,从而使得终端在单流传输时可以使用满功率进行上行信号的传输。另外本公开实施例可以通过在频域上进行预编码的调整,避免预编码在整个频带上与实际发送天线的相位差不匹配而导致的性能恶化问题,从而解决NR系统在基于码本的上行传输方案下单流传输时,部分相干传输能力的UE和具有非相干传输能力的终端的发送功率不能达到最大发送功率的问题。
附图说明
为了更清楚地说明本公开实施例的技术方案,下面将对本公开实施例的描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1表示相关技术基于码本的上行传输方案的流程示意图;
图2表示本公开实施例可应用的一种无线通信系统的框图;
图3表示相关技术CDD的循环延迟处理的原理示意图;
图4为本公开实施例提供的上行传输方法的一种流程示意图;
图5为本公开实施例提供的上行传输方法的另一种流程示意图;
图6为本公开实施例提供的上行传输的调度方法的一种流程示意图;
图7为本公开实施例提供的终端的一种结构示意图;
图8为本公开实施例提供的终端的另一种结构示意图。
图9为本公开实施例提供的基站的一种结构示意图;
图10为本公开实施例提供的基站的另一种结构示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。说明书以及权利要求中“和/或”表示所连接对象的至少其中之一。
本文所描述的技术不限于LTE/LTE的演进(LTE-Advanced,LTE-A)以及NR系统,并且也可用于各种无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)和其他系统。 术语“系统”和“网络”常被可互换地使用。CDMA系统可实现诸如CDMA2000、通用地面无线电接入(Universal Terrestrial Radio Access,UTRA)等无线电技术。UTRA包括宽带CDMA(Wideband Code Division Multiple Access,WCDMA)和其他CDMA变体。TDMA系统可实现诸如全球移动通信系统(Global System for Mobile Communication,GSM)之类的无线电技术。OFDMA系统可实现诸如超移动宽带(Ultra Mobile Broadband,UMB)、演进型UTRA(Evolution-UTRA,E-UTRA)、IEEE 1102.11(无线保真(Wireless Fidelity,Wi-Fi))、IEEE 1102.16(WiMAX)、IEEE 1102.20、Flash-OFDM等无线电技术。UTRA和E-UTRA是通用移动电信系统(Universal Mobile Telecommunications System,UMTS)的部分。LTE和更高级的LTE(如LTE-A)是使用E-UTRA的新UMTS版本。UTRA、E-UTRA、UMTS、LTE、LTE-A以及GSM在来自名为“第三代伙伴项目”(3rd Generation Partnership Project,3GPP)的组织的文献中描述。CDMA2000和UMB在来自名为“第三代伙伴项目2”(3GPP2)的组织的文献中描述。本文所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。然而,以下描述出于示例目的描述了NR系统,并且在以下大部分描述中使用NR术语,尽管这些技术也可应用于NR系统应用以外的应用。
以下描述提供示例而并非限定权利要求中阐述的范围、适用性或者配置。可以对所讨论的要素的功能和布置作出改变而不会脱离本公开的精神和范围。各种示例可恰适地省略、替代、或添加各种规程或组件。例如,可以按不同于所描述的次序来执行所描述的方法,并且可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
请参见图2,图2示出本公开实施例可应用的一种无线通信系统的框图。无线通信系统包括终端21和基站22。其中,终端21也可以称作用户终端或UE(User Equipment),终端21可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(Personal Digital Assistant,PDA)、移动上网装置(Mobile Internet Device,MID)、可穿戴式设备(Wearable Device)或车载设备等终端侧设备,需要说明的是,在本公开实施例中并不限定终端21的具体类型。基站22可以是5G及以后版本的 基站(例如:gNB、5G NR NB等),或者其他通信系统中的基站(例如:eNB、WLAN接入点、或其他接入点等),其中,基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本公开实施例中仅以NR系统中的基站为例,但是并不限定基站的具体类型。
基站22可在基站控制器的控制下与终端21通信,在各种示例中,基站控制器可以是核心网或某些基站的一部分。一些基站可通过回程与核心网进行控制信息或用户数据的通信。在一些示例中,这些基站中的一些可以通过回程链路直接或间接地彼此通信,回程链路可以是有线或无线通信链路。无线通信系统可支持多个载波(不同频率的波形信号)上的操作。多载波发射机能同时在这多个载波上传送经调制信号。例如,每条通信链路可以是根据各种无线电技术来调制的多载波信号。每个已调信号可在不同的载波上发送并且可携带控制信息(例如,参考信号、控制信道等)、开销信息、数据等。
基站22可经由一个或多个接入点天线与终端21进行无线通信。每个基站可以为各自相应的覆盖区域提供通信覆盖。接入点的覆盖区域可被划分成仅构成该覆盖区域的一部分的扇区。无线通信系统可包括不同类型的基站(例如宏基站、微基站、或微微基站)。基站也可利用不同的无线电技术,诸如蜂窝或WLAN无线电接入技术。基站可以与相同或不同的接入网或运营商部署相关联。不同基站的覆盖区域(包括相同或不同类型的基站的覆盖区域、利用相同或不同无线电技术的覆盖区域、或属于相同或不同接入网的覆盖区域)可以交叠。
无线通信系统中的通信链路可包括用于承载上行链路(Uplink,UL)传输(例如,从终端21到基站22)的上行链路,或用于承载下行链路(Downlink,DL)传输(例如,从基站22到用户设备21)的终端。UL传输还可被称为反向链路传输,而DL传输还可被称为前向链路传输。下行链路传输可以使用授权频段、非授权频段或这两者来进行。类似地,上行链路传输可以使用有 授权频段、非授权频段或这两者来进行。
为帮助理解本公开实施例相关方案,这里简单介绍循环延迟分集(Cyclic Delay Diversity,CCD)的原理。
CDD的基本原理是对发送端使用的多个天线上传输的信号经过循环移位后并行发送。通过对信号的循环延迟发送,循环延迟分集将空间分集转化为了频率分集。图3给出了一个CDD的循环延迟出现在循环前缀之前的示例,此时等效的时延偏移量不受CP的限制,能够在不增加实际信号时延扩展的前提下,提高等效信道的频率选择性。对于接收端而言,循环时延相当于是等效信道的变化,因此CDD也可以看成是一种空时编码,并不增加接收机的复杂度。当然,CDD的循环延迟也可以出现在循环前缀之后,此时有可能会增加实际信号的时延扩展。
CDD可以和空间预编码技术结合使用。例如LTE系统下行的TM3采用的大时延CDD技术就是CDD与空间预编码技术结合的一种技术。当前LTE系统和NR系统的上行都不支持CDD方案。小时延CDD的两根天线发送的信号之间有一个较小的循环移位,多根天线经历的信道可以等效为一个引入了更多径的单天线信道。由于接收端不必进行特殊的处理,因此,小时延CDD可以作为一种协议透明的传输方式。从时域上看,第二根天线的信号只是第一根天线的信号的加了个延迟。因此,第二根天线可以满足DFT-S-OFDM的低PAPR性质。由于分集源自于小时延,性能将对时延的长度非常敏感。另外,小时延CDD增加了等效信道的总的时延,因此也有可能会降低信道估计性能。
本公开实施例提供了一种上行传输方法,通过将循环预编码或CDD与UE的相干传输能力和/或基于码本/非码本上行传输方案相结合,可以通过引入发送分集增益来改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。请参照图4,本公开实施例提供了一种上行传输方法,应用于终端侧,包括:
步骤41,在多个天线端口上对上行信号进行延迟处理后发送。
这里,可选的,所述上行信号可以为PUSCH、物理上行控制信道(Physical Uplink Control Channel,PUCCH)、PUSCH的解调参考信号(DeModulation  Reference Signal,DMRS)和PUCCH的DMRS中的一种或多种,当然,本公开实施例并不局限于以上信号。
本公开实施例中,终端在上述步骤41中,在多个端口上对上行信号进行延迟处理后发送,可以引入发送分集增益来改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。
本公开实施例中,终端可以在预编码过程中,对在多个天线端口上对上行信号进行延迟处理后发送。
作为第一种实现方案,在上述步骤41中,可以利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000009
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;
Figure PCTCN2019105613-appb-000010
表示对对上行数据经过层映射及其之前步骤(如编码、调制等处理)后得到的信号符号(注意这里的上行数据可以是PUSCH上传输的数据,也可以是PUCCH上传输的数据,等等;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号。
Figure PCTCN2019105613-appb-000011
表示对应于x(i)的映射到各个天线端口上的符号,
Figure PCTCN2019105613-appb-000012
表示一个数据层中包含的数据符号的数量,
Figure PCTCN2019105613-appb-000013
表示映射到一个天线端口的数据符号的数量。
这里,可选的,所述参考预编码矩阵W 0(i)是基站通过TPMI为终端指示的一个预编码矩阵。例如,对于3GPP NR系统,TPMI可以通过DCI中的指示,或者通过高层参数指示,取决于PUSCH的grant(准许)方式。
可选的,所述参考预编码矩阵W 0(i)还可以是预定义的一个预编码矩阵。表3给出了预定义的预编码矩阵的一个示例。
Figure PCTCN2019105613-appb-000014
Figure PCTCN2019105613-appb-000015
表3
可选的,所述参考预编码矩阵W 0(i)还可以是从上行码本中选择出的一个预编码矩阵。上行码本可以参考相关技术协议的定义。
下面对以上公式中的D(i)进行具体说明。
作为一种可选方式,所述D(i)可以是一对角阵,且主对角线上的各元素分别对应于不同的相位偏移。例如,作为一个示例,所述D(i)中第l行第m列的元素d(i) l,m的取值可以按照以下方式确定:
Figure PCTCN2019105613-appb-000016
可选的,对于2天线端口上行传输:
Figure PCTCN2019105613-appb-000017
可选的,对于4天线端口上行传输:
Figure PCTCN2019105613-appb-000018
作为另一种可选方式,所述D(i)可以是一个与终端的相干传输能力有关 的方阵。可选地,D(i)可以是一个与终端的相干传输能力有关的对角阵。
所述D(i)可以与终端的相干传输能力有关是指在不同的终端相干传输能力下可以对应于不同的D(i)。
这里的终端的相干传输能力可以是终端向基站上报的相干传输能力。例如在3GPP NR系统中,协议TS38.331里规定了终端可以通过参数pusch-TransCoherence向基站上报终端的相干传输能力,包含三个候选值{nonCoherent,partialNonCoherent,fullCoherent},其中nonCoherent表示终端能力为非相干传输,partialNonCoherent表示终端能力为部分相干传输,fullCoherent表示终端能力为完全相干传输。
作为另一种可选方式,当终端能力为非相干传输时,所述D(i)可以是一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述D(i)可以是一单位阵;当终端能力为部分相干传输时,所述D(i)可以是一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。例如,作为一个示例,所述D(i)中第l行第m列的元素d(i) l,m的取值可以按照以下方式确定:
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000019
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000020
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000021
其中,a z为对应于第z个相干传输天线组的系数;
所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
具体的,所述θ 1、θ 2或θ 3的取值可以是终端自行确定的;或者;
所述θ 1、θ 2或θ 3的取值可以是终端根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值可以是终端根据一基站发送的第二角度门限确定的,且不大于该第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值可以是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值可以是根据上行信号的调度带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值可以是根据上行信号的调度带宽中的子带带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值是基站通过信令指示给终端的。
可选的,用θ表示θ 1、θ 2或θ 3,θ的取值可以有如下方式:
(1)终端自己确定。
(2)终端自己确定的一个不大于θ thred的值,其中θ thred是通过协议约定的。
(3)终端自己确定的一个不大于θ thred的值,其中θ thred是基站通过信令发送给终端的,所述信令可以为RRC信令,MAC CE信令,或者为DCI信令。
(4)协议约定的值。
(5)θ的取值由上行信号的调度带宽确定。例如,θ的取值应满足使得调度带宽内的总相位变化不低于Cπ,其中C是一个整数。可选地,C可以是终端和基站预先预定的数值。例如,θ的取值应满足使得调度带宽内的总相位变化不高于Cπ。
(6)θ的取值由下文中循环移位子带的带宽确定。例如,θ的取值应满足使得循环移位子带内的总相位变化不低于Cπ,其中C是一个整数。可选地,C可以是终端和基站预先预定的数值。再例如,例如,θ的取值应满足使得循环移位子带内的总相位变化不高于Cπ。
(7)基站通过信令向终端指示θ的取值。
这里,所述D(i)的取值,可以是终端接收基站发送的用于确定所述D(i)的指示消息,进而利用所述指示消息确定D(i)。
可选地,基站通过信令向终端(UE)直接或间接地指示D(i)。间接指示D(i)的方式包括但不限于:基站向UE指示D(i)的确定规则;基站向UE指示用于确定D(i)的参数,等。所述信令可以为RRC信令,MAC-CE信令,物理层信令等。可选地,所述信令为RRC信令。
可选地,UE向基站发送UE期望的D(i)。可以是直接或间接的方式。例如:UE向基站发送UE期望的D(i)的确定规则;UE向基站发送UE期望的用于确定D(i)的参数,等。UE向基站发送UE期望的D(i)中可以包含多组候选信息。可选地,基站根据UE发送的UE期望的D(i)确定UE进行上行信号 传输所使用的D(i),并指示给UE。可选地,UE向基站发送UE期望的D(i)中只有一组候选值,基站假设UE实际传输上行信号时的D(i)为UE向基站发送UE期望的D(i)。
可选地,UE向基站发送UE用于传输所述上行信号的D(i)。可以是直接或间接的方式。例如:UE向基站发送UE用于传输所述上行信号的D(i)的确定规则;UE向基站发送UE用于确定传输所述上行信号的D(i)的参数,等等。相应地,基站根据UE发送的UE用于传输所述上行信号的D(i)进行上行信号和相关信息(例如上行信号的解调参考信号)的接收。
可选的,对于2天线端口上行传输:
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000022
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000023
可选的,对于4天线端口上行传输:
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000024
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000025
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000026
通过以上D(i),本公开实施例可以在参考预编码矩阵的基础上引入相位偏移,从而实现对上行信号的延迟处理,引入了发送分集增益,可以改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。
本公开实施例中,假设上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数,可以在多个天线端口上对上行信号进行延迟处理过程中, 使用所述D(i)对上行信号映射到各个子带内或子带间的数据符号进行处理,并通过所述D(i)的取值是循环式的变化,以实现一种循环延迟处理。
作为一个具体示例,当在子带间进行循环延迟处理时,映射至同一个子带的每个x(i)对应的D(i)均相同,且该D(i)的取值与子带的编号或频率之间具有预定规律,即该D(i)的取值是以子带的编号或频率为变量的一种函数。例如,映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值均相同,且n 1的取值随着该子带对应的频率的递增而递增或递减。更为具体的,可以对所述子带按照频率递增的方式从1到B进行编号,然后n 1等于x(i)所要映射的资源单元所在的子带的编号,或者为n 1等于该x(i)所要映射的资源单元所在的子带的编号与一预设偏移量的和值,等等。
当在子带内进行循环延迟处理时,映射至同一子带的每个x(i)对应的D(i)的取值,根据该x(i)对应的资源单元(Resource Element,RE)在子带中的频域位置确定。例如,映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值,根据x(i)对应的资源单元在子带中的频域位置确定,且n 1的取值随着x(i)对应的资源单元的频率的递增而递增或递减。更为具体的,可以在一个所述子带内对数据符号占用的资源单元按照频率递增的方式从1开始进行编号,n 1等于所述x(i)在子带中的数据符号的编号。
这里,所述参考预编码矩阵可以是基站通过TPMI为终端指示的一个预编码矩阵;或者,所述参考预编码矩阵是预定义的一个预编码矩阵;或者,所述参考预编码矩阵是从上行码本中选择出的一个预编码矩阵。
作为第二种实现方案,在上述步骤41中,可以利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000027
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 1(i)表示维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵,例如,第m个预编码矩阵 组的第q 1+1个码字;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;
所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示对应于第r个预编码矩阵组的维度为P×υ的参考预编码矩阵。
这里,所述上行信号对应的参考预编码矩阵可以是基站通过TPMI为终端指示的一个预编码矩阵;或者,所述参考预编码矩阵是预定义的一个预编码矩阵;或者,所述参考预编码矩阵是从上行码本中选择出的一个预编码矩阵。
所述第一候选码字集合可以是终端接收基站发送的用于确定所述第一候选码字集合的指示消息,进而利用所述指示消息确定第一候选码字集合包含的预编码矩阵。
所述D q可以是终端接收基站发送的用于确定所述D q的指示消息,进而利用所述指示消息确定的。
下面对以上的第一候选码字集合中的任一码字D q进行具体说明。
假设所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数,映射至同一个子带的每个x(i)所对应的W 1(i)均相同,且该W 1(i)的取值与子带的编号或频率之间具有预定规律;或者,映射至同一子带的每个x(i)所对应的W 1(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
类似的,作为一种可选方式,第一候选码字集合中的任一码字D q可以均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移。例如,作为一个示例,所述D q中第l行第m列的元素d l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000028
作为另一种可选方式,当终端能力为非相干传输时,所述第一候选码字集合中的任一码字D q均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述第一候选码字集合中的任 一码字D q均为一单位阵;当终端能力为部分相干传输时,所述第一候选码字结合中的任一码字D q均为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。例如,作为一个示例,所述D q中第l行第m列的元素d(i) l,m的取值可以按照以下方式确定:
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000029
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000030
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000031
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;所述n 2的取值范围为1到M,其中,所述M为一个大于1的整数。可选的,所述M可以是θ 2与2π的公倍数与θ 2的比值,例如θ 2与2π的最小公倍数与θ 2的比值。
具体的,所述θ 1、θ 2或θ 3的取值可以是终端自行确定的;或者;
所述θ 1、θ 2或θ 3的取值可以是终端根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值可以是终端根据一基站发送的第二角度门限确定的,且不大于该第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值可以是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值可以是根据上行信号的调度带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值可以是根据上行信号的调度带宽中的子带带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值是基站通过信令指示给终端的。
可选的,用θ表示θ 1、θ 2或θ 3,θ的取值可以有如下方式:
(1)终端自己确定。
(2)终端自己确定的一个不大于θ thred的值,其中θ thred是通过协议约定的。
(3)终端自己确定的一个不大于θ thred的值,其中θ thred是基站通过信令发送给终端的,所述信令可以为RRC信令,MAC CE信令,或者为DCI信令。
(4)协议约定的值。
(5)θ的取值由上行信号的调度带宽确定。例如,θ的取值应满足使得调度带宽内的总相位变化不低于Cπ,其中C是一个整数。可选地,C可以是终端和基站预先预定的数值。例如,θ的取值应满足使得调度带宽内的总相位变化不高于Cπ。
(6)θ的取值由下文中循环移位子带的带宽确定。例如,θ的取值应满足使得循环移位子带内的总相位变化不低于Cπ,其中C是一个整数。可选地,C可以是终端和基站预先预定的数值。再例如,例如,θ的取值应满足使得循环移位子带内的总相位变化不高于Cπ。
(7)基站通过信令向终端指示θ的取值。
在上述第二种实现方案中,终端(UE)可以在基站为上行信号分配的整个频带范围内的各个循环移位子带内进行循环预编码(或循环延迟分集)传输,或者,在各个循环移位子带进行循环预编码(或循环延迟分集)传输。
实现方式1:针对在循环移位子带内进行循环预编码传输:
UE在基站为上行信号分配的整个频带范围内的各个循环移位子带内进行循环预编码(或循环延迟分集)传输。假设UE在基站为上行信号分配的整个频带范围内以颗粒度G进行循环移位子带的划分(例如,预编码颗粒度为G个RB)。G可以是基站通过信令指示给UE的,或者,通过协议约定的,或者,UE确定的。G可以为1个RB,或者为1组RB,或者为上行信号的整个频带范围。假设基站通过TPMI为终端指示的预编码矩阵为W 1(i),在一个循环移位子带包含的时频资源范围内,UE利用根据一定规则生成的(或者预设的)码字组内的码字进行循环预编码.所述循环预编码是指对这个颗粒度内的第一个数据符号使用第一个码字进行预编码,第二个数据符号使用第二个码字进行预编码,…,第n个符号使用第mod(K,n)个码字进行预编码,…,可选地,K为θ和2π的最小公倍数与θ的比值。举例来说,上行信号为PUSCH,循环移位颗粒度G为1个RB,在为PUSCH调度的第一个PRB内为PUSCH分配了12个RE,K=4,则在这个PRB内对应于PUSCH的第一个RE使用码字标号为1的码字作为W(i),在这个PRB内对应于PUSCH的第2个RE使用码字标号为2的码字作为W(i),…,这个PRB内对应于PUSCH的第4个RE使用码字标号为4的码字作为W(i),这个PRB内对应于PUSCH的第5个RE 使用码字标号为1的码字作为W(i),这个PRB内对应于PUSCH的第6个RE使用码字标号为2的码字作为W(i),…。可选地,上行信号的调度带宽包含1个循环移位子带,即循环移位子带的大小为上行信号的调度带宽,不对上行信号的调度带宽进行子带的划分。
一种根据一定规则生成的(或者预设的)码字组的定义方式为:
两天线端口时:
Figure PCTCN2019105613-appb-000032
四天线端口时:
Figure PCTCN2019105613-appb-000033
Figure PCTCN2019105613-appb-000034
另一种根据一定规则生成的(或者预设的)码字组的定义方式为:
两天线端口时:
Figure PCTCN2019105613-appb-000035
四天线端口时,
1)当UE的能力为非相干传输时:
Figure PCTCN2019105613-appb-000036
Figure PCTCN2019105613-appb-000037
2)当UE的能力为部分相干传输时:
Figure PCTCN2019105613-appb-000038
Figure PCTCN2019105613-appb-000039
3)当UE的能力为全相干传输时,W(i)=W 1(i)。
应当理解的是,在本方式下,针对非相干传输能力UE的码本中的θ与针对部分相干传输能力UE的码本中的θ可以是相同或不同的值。
另一种根据一定规则生成的(或者预设的)码字组的方式为:
对于2天线端口:
Figure PCTCN2019105613-appb-000040
对于4天线端口:
Figure PCTCN2019105613-appb-000041
实现方式2:针对在循环移位子带间进行循环预编码传输:
UE在基站为上行信号分配的整个频带范围内以颗粒度N进行循环延迟分集传输(这种情况下可以认为UE的预编码颗粒度为N个RB)。N可以是 基站通过信令指示给UE的,或者,通过协议约定的。假设基站通过TPMI为终端指示的预编码矩阵为W 1(i),则在频带范围内,UE利用预定义的码字组内的码字以预编码颗粒度N进行循环预编码.所述以预编码颗粒度N进行循环预编码是指对第一组N个RB的数据符号使用第一个码字进行预编码,第二组N个RB的数据符号使用第二个码字进行预编码,…,第n组N个RB使用第mod(M,n)个码字进行预编码,…,可选地,M为θ和2π的最小公倍数与θ的比值。举例来说,上行信号为PUSCH,预编码的颗粒度为N=4个RB,M=4,在为PUSCH调度的标号最小的4个PRB内使用预定义的码字组内码字标号为1的码字作为W(i),在在标号次小的4个PRB内使用预定义的码字组内码字标号为2的码字作为W(i),…。所述预定义的码字组的定义方式可以如实现方式2中的各方案所示
可选地,基站通过信令向UE直接或间接地指示根据预设规则生成的(或者预设的)码字组。间接指示码字组的方式包括但不限于:基站向UE指示码字组的生成规则;基站向UE指示用于确定所述码字组的参数,等。所述信令可以是RRC信令,MAC-CE信令,物理层信令(例如通过DCI指示)等。可选地,所述信令为RRC信令。
可选地,UE向基站发送UE期望的根据预设规则生成的(或者预设的)码字组。可以是直接或间接的方式。例如:UE向基站发送UE期望的所述码字组的确定规则;UE向基站发送UE期望的用于确定所述码字组的参数,等。UE向基站发送UE期望的所述码字组中可以包含多组候选信息。可选地,基站根据UE发送的UE期望的所述码字组确定UE进行上行信号传输所使用的所述码字组,并指示给UE。可选地,UE向基站发送UE期望的所述码字组中只有一组候选值,基站假设UE实际传输上行信号时的所述码字组为UE向基站发送UE期望的所述码字组。
可选地,UE向基站发送UE用于传输所述上行信号的根据预设规则生成的(或者预设的)码字组。可以是直接或间接的方式。例如:UE向基站发送UE期望的所述码字组的确定规则;UE向基站发送UE期望的用于确定所述码字组的参数,等。相应地,基站根据UE发送的UE用于传输所述上行信号的所述码字组进行上行信号和相关信息(例如上行信号的解调参考信号)的 接收。
通过以上W 1(i),本公开实施例可以在参考预编码矩阵的基础上引入相位偏移,从而实现对上行信号的延迟处理,引入了发送分集增益,可以改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。
本公开实施例中,假设上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数,可以在多个天线端口上对上行信号进行延迟处理过程中,可以通过W 1(i)对上行信号映射到各个子带内或子带间的数据符号进行预编码处理,并通过所述W 1(i)的取值是循环式的变化,以实现一种循环延迟处理。
作为一个具体示例,假设所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数,当在子带间进行循环延迟处理时,映射至同一子带的所有数据符号对应于相同的n 2,n 2的取值随着子带对应的频率的递增而递增或递减;当在子带内进行循环延迟处理时,n 2的取值根据所述数据符号x (j)(i)对应的资源单元在其所在的子带中的频域位置确定,n 2的取值随着数据符号对应的资源单元的频率的递增而递增或递减。
更为具体的,当在子带内进行循环延迟处理时,在所述x(i)所要映射的时频资源在其所在的子带中的序号为L 1时,所述码字W 1(i)是对应预编码矩阵组r 1中的第K 1+1个预编码矩阵,其中,K 1=mod(M 1,L 1)。当在子带间进行循环延迟处理时,在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述码字W 1(i)是对应预编码矩阵组r 2中的第K 2+1个预编码矩阵,其中,K 2=mod(M 2,L 2);其中,所述M 1、M 1分别为对应预编码矩阵组中的预编码矩阵的数量,所述r 1、r 2分别为预编码矩阵组的编号。
另外需要说明的是,本文中的Mod(X,Y)是表示求余运算,即在整数运算中求一个整数Y除以另一个整数X的余数的运算,例如,Y=7,X=3,则Mod(X,Y)=1。
请参照图5,本公开实施例还提供了另一种上行传输方法,应用于终端,包括:
步骤51,循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理后发送。
这里,可选的,所述上行信号可以为PUSCH、PUCCH、PUSCH的DMRS 和PUCCH的DMRS中的一种或多种,当然,本公开实施例并不局限于以上信号。
本公开实施例中,终端在上述步骤51中,通过循环利用第一候选码字集合中的码字对上行信号进行预编码处理,可以引入发送分集增益来改善信道变化较快或终端天线间的相位差或功率差变化较快时的上行传输性能。
本公开实施例中,终端在上述步骤51中具体可以执行下述处理:
假设第一候选码字集合中的码字的维度为P×P,终端可以利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000042
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;
Figure PCTCN2019105613-appb-000043
表示在第一候选码字集合中序号为q 1的码字;P表示为所述终端配置的所述上行信号所对应的天线端口数目;W 0(i)表示维度P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;x(i)=[x (0)(i) ... x (υ-1)(i)] T
举例来说,第一候选码字集合可以是上行码本中P端口下P流传输的部分或全部码字的集合。终端从第一候选码字集合里的码字里选择一个码字作为
Figure PCTCN2019105613-appb-000044
可选地,第一候选码字集合为上行码本中P端口下P流传输的全部码字。上行码本可以参考相关标准的定义。
举例来说,两天线端口时第一候选码字集合B(n)如下:
Figure PCTCN2019105613-appb-000045
对于4天线端口,一种D(i)的候选集合如下:
Figure PCTCN2019105613-appb-000046
或者,
假设第一候选码字集合中的码字的维度为P×υ,终端可以利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000047
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;W 1(i)表示候选预编码矩阵集合W 1 s(i)中第m个候选码字集合的第q 1+1个码字;W 1 s(i)包括R个候选码字集合,所述第一候选码字集合为该R个候选码字集合中的一个;其中第r个候选码字集合中的第q个码字满足W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W r表示维度P×υ的参考预编码矩阵;x(i)=[x (0)(i) ... x (υ-1)(i)] T
这里,所述参考预编码矩阵是基站通过TPMI为终端指示的一个预编码矩阵;或者,所述参考预编码矩阵是预定义的一个预编码矩阵;或者,所述参考预编码矩阵是从上行码本中选择出的一个预编码矩阵。
这里,假设所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数,则:
可以循环利用第一候选码字集合中的码字,在子带内在多个天线端口上对上行信号进行预编码,则在所述x(i)所要映射的资源单元在其所在的子带中的数据符号的序号为L 1时,所述q 1=mod(M 2,L 1)。或者,
可以循环利用第一候选码字集合中的码字,在子带间在多个天线端口上对上行信号进行预编码,则在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述q 1=mod(M 2,L 2);
其中,所述M 2为所述第一候选码字集合中的码字的数量。
以上提高了终端侧的上行传输方法的多个实施例。
本公开实施例中,终端可以接收发送的用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。然后,终端根据上述指示信息,执行图4或图5所示的相关处理。
本公开实施例图4或图5的方案,可以应用在以下多种场景中,例如:
1)所述终端被配置了基于码本的上行信号传输,且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配。
具体的,上述第1种场景又可以包括:
所述终端被配置了基于码本的上行信号传输,且所述终端具有部分相干传输能力或非相干传输能力;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端具有非相干传输能力,且基站为终端指示的TPMI所对应的码字为部分相干传输码字或者全相干传输码字;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端具有部分相干传输能力,且基站为终端指示的TPMI所对应的码字为全相干传输码字;
所述终端被配置了基于码本的上行信号传输,且所述终端具有部分相干传输能力的终端,且基站为终端指示的码本子集限制参数为全相干传输;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端具有非相干传输能力,且基站为终端指示的码本子集限制参数为部分相干传输或全相干传输。
2)所述终端被配置了基于码本的上行信号传输,且所述终端被配置进行单流传输。
3)所述终端被配置了基于码本的上行信号传输,且所述终端被配置进行单流传输,并且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配。
具体的,上述第3种场景又可以包括:
所述终端被配置了基于码本的上行信号传输方案时,且所述终端具有部分相干传输能力或非相干传输能力,且基站指示终端进行单流传输;
或者,所述终端被配置了基于码本的上行信号传输方案,且所述终端具有非相干传输能力,且基站为终端指示的TPMI所对应的码字对应于单流传输,且为部分相干传输码字或全相干传输码字;
或者,所述终端被配置了进行基于码本的上行传输,且所述终端具有部分相干传输能力,基站为所述终端指示的码本子集限制参数指示全相干传输;
或者,所述终端被配置了基于码本的上行传输,且所述终端具有非相干传输能力,基站为所述终端指示的码本子集限制参数为部分相干传输或全相干传输且基站指示终端进行单流传输。
在本公开实施例中,允许基站为终端指示超出终端相干传输能力的码字,和/或基站向终端指示的码本子集限制参数超出终端的相干传输能力。以3GPPNR系统为例,基站可以通过RRC信令中的高层参数codebookSubset向UE指示码本子集限制,其中codebookSubset的候选取值包括:{fullyAndPartialAndNonCoherent,partialAndNonCoherent,nonCoherent}。以当前版本的3GPP TS38.211协议里定义的以下上行码本为例。将上行码本中的码字分为3类,分别为:全相干传输、部分相干传输和非相干传输的码字。其中,部分相干传输的码字中的任一列只有对应于属于同一个相干传输天线组的非零元素(在3GPP NR系统中,第1、3天线为一个相干传输天线组,第2、4天线为另一个相干传输天线组);非相干传输码字中的任一列只有对应于一个天线的非零元素;全相干传输码字中至少一列所有元素非零。
为了便于理解,下面的表格列出了3GPP NR系统中的上行码本,并给出了具体的码字类型。按照当前的3GPP协议,当codebookSubset的取值为fullyAndPartialAndNonCoherent,基站向终端指示的TPMI可以为码本中的任意一个码字;当codebookSubset的取值为partialAndNonCoherent,基站向终 端指示的TPMI只能为码本中全相干传输或部分相干传输的码字;当codebookSubset的取值为nonCoherent,基站向终端指示的TPMI只能为码本中非相干传输的码字。在本公开实施例中,如果当codebookSubset的取值为partialAndNonCoherent,基站向终端指示的TPMI为码本中全相干传输的码字时,认为基站指示的码字超出了码本子集限制参数的取值所对应的码字;当codebookSubset的取值为nonCoherent,基站向终端指示的TPMI为码本中全相干传输或部分相干传输的码字,则认为基站指示的码字超出了码本子集限制参数的取值所对应的码字。类似的,当终端上报的相干传输能力为非相干(参数pusch-TransCoherence为nonCoherent)时,若基站向终端指示的TPMI为码本中全相干传输或部分相干传输的码字,则认为基站指示的码字超出了终端的相干传输能力(或者,终端的相干传输能力与基站指示的码字不匹配);当终端上报的相干传输能力为部分相干(参数pusch-TransCoherence为partialNonCoherent)时,若基站向终端指示的TPMI为码本中全相干传输的码字,则认为基站指示的码字超出了终端的相干传输能力(或者,终端的相干传输能力与基站指示的码字不匹配)。当终端上报的相干传输能力为非相干(参数pusch-TransCoherence为nonCoherent)时,若基站向终端发送的codebookSubset的取值为partialAndNonCoherent或fullyAndPartialAndNonCoherent,则认为基站配置的码本子集限制超出了终端的相干传输能力(或者,终端的相干传输能力与基站配置的码本子集限制参数不匹配);当终端上报的相干传输能力为部分相干(参数pusch-TransCoherence为partialNonCoherent)时,若基站向终端配置的codebookSubset的取值为fullyAndPartialAndNonCoherent,则认为基站配置的码本子集限制超出了终端的相干传输能力(或者,终端的相干传输能力与基站配置的码本子集限制参数不匹配)。
例如,下表中,TPMI index为0~1的码字为非相干传输的码字;其他码字为部分相干传输的码字。
Figure PCTCN2019105613-appb-000048
Table 6.3.1.5-1:Precoding matrix W for single-layer transmission using two antenna ports.
例如,下表中,TPMI index为0~3的码字为非相干传输的码字;TPMI index为4~11的码字为部分相干传输的码字;其他码字为全相干传输的码字。
Figure PCTCN2019105613-appb-000049
Table 6.3.1.5-2:Precoding matrix W for single-layer transmission using four antenna ports with transform precoding enabled.
例如,下表中,TPMI index为0~3的码字为非相干传输的码字;TPMI index为4~11的码字为部分相干传输的码字;其他码字为全相干传输的码字。
Figure PCTCN2019105613-appb-000050
Table 6.3.1.5-3:Precoding matrix W for single-layer transmission using four antenna ports with transform precoding disabled.
例如,下表中,TPMI index为0的码字为非相干传输的码字;TPMI index为1~2的码字为全相干传输的码字。
Figure PCTCN2019105613-appb-000051
Table 6.3.1.5-4:Precoding matrix W for two-layer transmission using two antenna ports with transform precoding disabled.
例如,下表中,TPMI index为0~5的码字为非相干传输的码字;TPMI index为6~13的码字为部分相干传输的码字;其他码字为全相干传输的码字。
Figure PCTCN2019105613-appb-000052
Table 6.3.1.5-5:Precoding matrix W for two-layer transmission using four antenna ports with transform precoding disabled.
例如,下表中,TPMI index为0的码字为非相干传输的码字;TPMI index为1~2的码字为部分相干传输的码字;其他码字为全相干传输的码字。
Figure PCTCN2019105613-appb-000053
Table 6.3.1.5.4-6:Precoding matrix W for three-layer transmission using four antenna ports with transform  precoding disabled.
例如,下表中,TPMI index为0的码字为非相干传输的码字;TPMI index为1~2的码字为部分相干传输的码字;其他码字为全相干传输的码字。
Figure PCTCN2019105613-appb-000054
Table 6.3.1.5-7:Precoding matrix W for four-layer transmission using four antenna ports with transform precoding disabled.
以上介绍了终端侧在本公开实施例中的方法流程。下面将进一步介绍基站侧的行为。
请参照图6,本公开实施例提供的一种上行传输的调度方法,在应用于基站侧时,包括:
步骤61,根据终端对上行信号的传输方案,确定上行信号的调度信息;
其中,所述传输方案包括:在多个天线端口上对上行信号进行延迟处理,或者,循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
这里,可选的,所述上行信号可以为PUSCH、PUCCH、PUSCH的DMRS和PUCCH的DMRS中的一种或多种,当然,本公开实施例并不局限于以上信号。所述上行信号的调度信息包括:MCS、传输预编码矩阵指示(TPMI)、传输层数和对应的SRS资源指示等信息。
这里,所述在预编码处理过程中,在多个天线端口上对上行信号进行延迟处理,即为上文中图4所示的终端的上行传输方案;所述循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理,即为上文中图5所示的终端的上行传输方案。
这里,所述在多个天线端口上对上行信号进行延迟处理或者所述循环利 用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理,均可以通过以下任一种方式实现:
第一种方式:
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000055
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵,x(i)=[x (0)(i) ... x (υ-1)(i)] T;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号。
第二种方式:,
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000056
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵;v表示用于计算等效信道的数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目。
上述步骤61中,根据终端对上行信号的传输方案,确定上行信号的调度信息,包括:利用第二公式,获取等效上行信道,并利用所述等效上行信道确 定上行信号的调度信息。
这里,所述第二公式为:H(i)'=D(i)W(i)H(i);
其中H(i)是基站根据用于上行信道状态信息(Channel State Information,CSI)获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
或者,所述第二公式为:H(i)'=W 1(i)H(i)
其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
更进一步的,基站还可以采用与终端对上行信号的预编码方案相对应的方案,进行所述上行信号的检测。具体的,基站可以利用第二公式,获取等效上行信道,并利用所述等效上行信道进行所述上行信号的检测。
这里,所述第二公式为:H(i)'=D(i)W(i)H(i)
其中H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元 的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
或者,
所述第二公式为:H(i)'=W 1(i)H(i)
其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
另外,本公开实施例中,基站还可以向终端发送用于确定所述D(i)的指示消息,以使终端根据该指示消息确定D(i)。
这里,所述D(i)或D q中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000057
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000058
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000059
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000060
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
所述θ 1、θ 2或θ 3的取值是根据一预先约定的第一角度门限确定的,且不 大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值是根据发送的第二角度门限确定的,且不大于该第二角度门限,所述方法还包括:向所述终端发送所述第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽存在对应关系;或者,
所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽中的子带带宽存在对应关系;或者,
进一步的:基站还可以通过信令向所述终端指示所述θ 1、θ 2或θ 3的取值。
可选的,所述W(i)或W 1(i)是基站通过TPMI为终端指示的一个预编码矩阵;或者,所述W(i)或W 1(i)是预定义的一个预编码矩阵。
可选的,本公开实施例中,基站还可以向终端发送用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
另外,需要说明的是,在本公开实施例中,上行码本中的码字可以分为三种类型,分别为:全相干传输码字、部分相干传输码字和非相干传输的码字。其中,部分相干传输的码字中的任一列只有对应于属于同一个相干传输天线组的非零元素(在3GPP NR系统中,第1、3天线为一个相干传输天线组,第2、4天线为另一个相干传输天线组);非相干传输码字中的任一列只有对应于一个天线的非零元素;全相干传输码字中至少一列所有元素非零。
以上分别从终端侧和基站侧介绍了本公开实施例的相关方法。下面将通过更为详细的示例对以上的方法作进一步说明。需要说明的是,上文中主要以PUSCH为例进行上行信号的阐述,应当理解的是,本公开实施例的方法同样适用于PUCCH、PUSCH的DMRS、PUCCH的DMRS、SRS等上行信号。
基于以上方法,本公开实施例还提供了实施上述方法的设备。
请参照图7,本公开实施例提供的终端的一种结构示意图,该终端70包括:处理器701、收发机702、存储器703、用户接口704和总线接口,其中:
在本公开实施例中,终端700还包括:存储在存储器上703并可在处理 器701上运行的计算机程序。
所述处理器701,用于读取存储器中的程序,执行下列过程:在多个天线端口上对上行信号进行延迟处理;
所述收发机702,用于发送经延迟处理后的上行信号。
在图7中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器701代表的一个或多个处理器和存储器703代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机702可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口704还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器701负责管理总线架构和通常的处理,存储器703可以存储处理器701在执行操作时所使用的数据。
可选的,所述处理器701,还用于利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000061
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号。
可选的,所述D(i)为一个与终端的相干传输能力有关的方阵;或者,
所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;
或者,
当终端能力为非相干传输时,所述D(i)为一对角阵,且主对角线上的各 元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述D(i)为一单位阵;当终端能力为部分相干传输时,所述D(i)为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
可选的,所述D(i)中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000062
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000063
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000064
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000065
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一个子带的每个x(i)对应的D(i)均相同,且该D(i)的取值与子带的编号或频率之间具有预定规律;或者,
映射至同一子带的每个x(i)对应的D(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
可选的,所述收发机702,还用于接收基站发送的用于确定所述D(i)的指示消息;
所述处理器701,还用于利用所述指示消息确定D(i)。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值均相同,且n 1 的取值随着子带对应的频率的递增而递增或递减;或者,
映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值,根据x(i)对应的资源单元在子带中的频域位置确定,且n 1的取值随着x(i)对应的资源单元的频率的递增而递增或递减。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
对所述子带按照频率递增的方式从1到B进行编号,n 1等于x(i)所要映射的资源单元所在的子带的编号;或者,
在一个所述子带内对数据符号占用的资源单元按照频率递增的方式从1开始进行编号,n 1等于所述x(i)在子带中的数据符号的编号。
可选的,所述处理器701,还用于利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000066
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;
所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一个子带的每个x(i)所对应的W 1(i)均相同,且该W 1(i)的取值与子带的编号或频率之间具有预定规律;或者,
映射至同一子带的每个x(i)所对应的W 1(i)的取值,根据该x(i)对应的资源 单元在子带中的频域位置确定。
可选的,所述收发机702,还用于接收基站发送的用于确定所述D q的指示消息;所述处理器701,还用于利用所述指示消息确定D q
可选的,所述第一候选码字集合中的任一码字D q均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;
或者,
当终端能力为非相干传输时,所述第一候选码字集合中的任一码字D均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述第一候选码字集合中的任一码字D均为一单位阵;当终端能力为部分相干传输时,所述第一候选码字结合中的任一码字D q均为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
可选的,所述D q中第l行第m列的元素d l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000067
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000068
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000069
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000070
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;所述n 2的取值范围为1到M,其中,所述M为一个大于1的整数。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一子带的所有数据符号对应于相同的n 2,n 2的取值随着子带对 应的频率的递增而递增或递减;或者,
n 2的取值根据所述数据符号x (j)(i)对应的资源单元在其所在的子带中的频域位置确定,n 2的取值随着数据符号对应的资源单元的频率的递增而递增或递减。
可选的,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
在所述x(i)所要映射的时频资源在其所在的子带中的序号为L 1时,所述码字W 1(i)是对应预编码矩阵组r 1中的第K 1+1个预编码矩阵,其中,K 1=mod(M 1,L 1);或者,
在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述码字W 1(i)是对应预编码矩阵组r 2中的第K 2+1个预编码矩阵,其中,K 2=mod(M 2,L 2);
其中,所述M 1、M 1分别为对应预编码矩阵组中的预编码矩阵的数量,所述r 1、r 2分别为预编码矩阵组的编号。
可选的,所述θ 1、θ 2或θ 3的取值是终端自行确定的;或者;
所述θ 1、θ 2或θ 3的取值是终端根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值是终端根据一基站发送的第二角度门限确定的,且不大于该第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值是根据上行信号的调度带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值是根据上行信号的调度带宽中的子带带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值是基站通过信令指示给终端的。
可选的,所述参考预编码矩阵是基站通过TPMI为终端指示的一个预编码矩阵;或者,
所述参考预编码矩阵是预定义的一个预编码矩阵;或者,
所述参考预编码矩阵是从上行码本中选择出的一个预编码矩阵。
可选的,所述上行信号为PUSCH、PUCCH、PUSCH的DMRS和PUCCH 的DMRS中的一种或多种。
可选的,所述终端被配置了基于码本的上行信号传输,且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端配置进行单流传输;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端配置进行单流传输,并且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配。
可选的,所述收发机702,还用于接收基站发送的用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
请参照图8,本公开实施例提供了另一种终端80,包括:
编码处理单元81,用于在多个天线端口上对上行信号进行延迟处理;
发送单元82,用于发送经延迟处理后的上行信号。
可选的,所述编码处理单元81,还用于利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000071
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号。
可选的,所述D(i)为一个与终端的相干传输能力有关的方阵;或者,
所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;
或者,
当终端能力为非相干传输时,所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述D(i)为一单位阵;当终端能力为部分相干传输时,所述D(i)为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
可选的,所述D(i)中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000072
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000073
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000074
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000075
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一个子带的每个x(i)对应的D(i)均相同,且该D(i)的取值与子带的编号或频率之间具有预定规律;或者,
映射至同一子带的每个x(i)对应的D(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
可选的,所述收发单元82,还用于接收基站发送的用于确定所述D(i)的指示消息;
所述编码处理单元81,还用于利用所述指示消息确定D(i)。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值均相同,且n 1 的取值随着子带对应的频率的递增而递增或递减;或者,
映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值,根据x(i)对应的资源单元在子带中的频域位置确定,且n 1的取值随着x(i)对应的资源单元的频率的递增而递增或递减。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
对所述子带按照频率递增的方式从1到B进行编号,n 1等于x(i)所要映射的资源单元所在的子带的编号;或者,
在一个所述子带内对数据符号占用的资源单元按照频率递增的方式从1开始进行编号,n 1等于所述x(i)在子带中的数据符号的编号。
可选的,所述编码处理单元81,还用于利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000076
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;
所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一个子带的每个x(i)所对应的W 1(i)均相同,且该W 1(i)的取值与子带的编号或频率之间具有预定规律;或者,
映射至同一子带的每个x(i)所对应的W 1(i)的取值,根据该x(i)对应的资源 单元在子带中的频域位置确定。
可选的,所述收发单元82,还用于接收基站发送的用于确定所述D q的指示消息;所述编码处理单元81,还用于利用所述指示消息确定D q
可选的,所述第一候选码字集合中的任一码字D q均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;
或者,
当终端能力为非相干传输时,所述第一候选码字集合中的任一码字D均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述第一候选码字集合中的任一码字D均为一单位阵;当终端能力为部分相干传输时,所述第一候选码字结合中的任一码字D q均为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
可选的,所述D q中第l行第m列的元素d l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000077
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000078
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000079
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000080
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;所述n 2的取值范围为1到M,其中,所述M为一个大于1的整数。
可选的,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
映射至同一子带的所有数据符号对应于相同的n 2,n 2的取值随着子带对 应的频率的递增而递增或递减;或者,
n 2的取值根据所述数据符号x (j)(i)对应的资源单元在其所在的子带中的频域位置确定,n 2的取值随着数据符号对应的资源单元的频率的递增而递增或递减。
可选的,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
在所述x(i)所要映射的时频资源在其所在的子带中的序号为L 1时,所述码字W 1(i)是对应预编码矩阵组r 1中的第K 1+1个预编码矩阵,其中,K 1=mod(M 1,L 1);或者,
在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述码字W 1(i)是对应预编码矩阵组r 2中的第K 2+1个预编码矩阵,其中,K 2=mod(M 2,L 2);
其中,所述M 1、M 1分别为对应预编码矩阵组中的预编码矩阵的数量,所述r 1、r 2分别为预编码矩阵组的编号。
本公开实施例还提供了另一种终端,其结构类似于图7所示终端的结构,包括:包括:处理器、收发机、存储器、用户接口和总线接口,其中:
在本公开实施例中,终端还包括:存储在存储器上并可在处理器上运行的计算机程序。
所述处理器,用于读取存储器中的程序,执行下列过程:循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理;
所述收发机,用于发送经预编码处理后的上行信号。
在该终端中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器负责管理总线架构和通常的处理,存储器可以存储处理器在执行操作时所使用的数据。
可选的,第一候选码字集合中的码字的维度为P×P,所述处理器,还用于:
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000081
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;
Figure PCTCN2019105613-appb-000082
表示在第一候选码字集合中序号为q 1的码字;P表示为所述终端配置的所述上行信号所对应的天线端口数目;W 0(i)表示维度P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;x(i)=[x (0)(i) ... x (υ-1)(i)] T
或者,
第一候选码字集合中的码字的维度为P×υ,所述处理器,还用于:
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000083
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;W 1(i)表示候选预编码矩阵集合W 1 s(i)中第m个候选码字集合的第q 1+1个码字;W 1 s(i)包括R个候选码字集合,所述第一候选码字集合为该R个候选码字集合中的一个;其中第r个候选码字集合中的第q个码字满足W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W r表示维度P×υ的参考预编码矩阵;x(i)=[x (0)(i) ... x (υ-1)(i)] T
可选的,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
在所述x(i)所要映射的资源单元在其所在的子带中的数据符号的序号为L 1时,所述q 1=mod(M 2,L 1);或者,
在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述q 1=mod(M 2,L 2);
其中,所述M 2为所述第一候选码字集合中的码字的数量。
可选的,所述θ 1、θ 2或θ 3的取值是终端自行确定的;或者;
所述θ 1、θ 2或θ 3的取值是终端根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值是终端根据一基站发送的第二角度门限确定的,且不大于该第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值是根据上行信号的调度带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值是根据上行信号的调度带宽中的子带带宽确定的值;或者,
所述θ 1、θ 2或θ 3的取值是基站通过信令指示给终端的。
可选的,所述参考预编码矩阵是基站通过TPMI为终端指示的一个预编码矩阵;或者,
所述参考预编码矩阵是预定义的一个预编码矩阵;或者,
所述参考预编码矩阵是从上行码本中选择出的一个预编码矩阵。
可选的,所述上行信号为PUSCH、PUCCH、PUSCH的DMRS和PUCCH的DMRS中的一种或多种。
可选的,所述终端被配置了基于码本的上行信号传输,且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端配置进行单流传输;
或者,所述终端被配置了基于码本的上行信号传输,且所述终端配置进行单流传输,并且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配。
可选的,所述收发机,还用于接收基站发送的用于指示在多个天线端口 上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
本公开实施例还提供了另一种终端,其结构类似于图8所述结构,包括:
编码处理单元,用于循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理;
收发单元,用于发送经预编码处理后的上行信号。
可选的,第一候选码字集合中的码字的维度为P×P,所述编码处理单元,还用于:
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000084
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;
Figure PCTCN2019105613-appb-000085
表示在第一候选码字集合中序号为q 1的码字;P表示为所述终端配置的所述上行信号所对应的天线端口数目;W 0(i)表示维度P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;x(i)=[x (0)(i) ... x (υ-1)(i)] T
或者,
第一候选码字集合中的码字的维度为P×υ,所述编码处理单元,还用于:
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000086
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;W 1(i)表示候选预编码矩阵集合W 1 s(i)中第m个候选码字集合的第q 1+1个码字;W 1 s(i)包括R个候选码字集合,所述第一候选码字集合为该R个候选码字集合中的一个;其中第r个候选码字集合中的第q个码字满足W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W r表示维度P×υ的参考预编码矩阵;x(i)=[x (0)(i) ... x (υ-1)(i)] T
可选的,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
在所述x(i)所要映射的资源单元在其所在的子带中的数据符号的序号为L 1时,所述q 1=mod(M 2,L 1);或者,
在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述q 1=mod(M 2,L 2);
其中,所述M 2为所述第一候选码字集合中的码字的数量。
请参考图9,本公开实施例提供了基站900的一结构示意图,包括:处理器901、收发机902、存储器903和总线接口,其中:
在本公开实施例中,基站900还包括:存储在存储器上903并可在处理器901上运行的计算机程序。
所述处理器901,用于读取存储器中的程序,执行下列过程:根据终端对上行信号的传输方案,确定上行信号的调度信息;
其中,所述传输方案包括:在预编码处理过程中,在多个天线端口上对上行信号进行延迟处理,或者,循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
在图9中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器901代表的一个或多个处理器和存储器903代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机902可以是多个元件,即包括 发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。
处理器901负责管理总线架构和通常的处理,存储器903可以存储处理器901在执行操作时所使用的数据。
可选的,所述上行信号的调度信息包括:MCS、传输预编码矩阵指示TPMI、传输层数和对应的SRS资源指示中的至少一种。
可选的,所述处理器901,还用于采用与终端对上行信号的预编码方案相对应的方案,进行所述上行信号的检测。
可选的,所述在多个天线端口上对上行信号进行延迟处理或者所述循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理为:利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000087
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵,x(i)=[x (0)(i) ... x (υ-1)(i)] T;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;或者,
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000088
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一 候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵;v表示用于计算等效信道的数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目。
可选的,所述处理器901,还用于利用第二公式,获取等效上行信道,并利用所述等效上行信道确定上行信号的调度信息;
所述第二公式为:
H(i)'=D(i)W(i)H(i);
其中H(i)是基站根据用于上行信道状态信息CSI(Channel State Information)获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
或者,所述第二公式为:H(i)'=W 1(i)H(i)
其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
可选的,所述处理器901,还用于利用第二公式,获取等效上行信道,并利用所述等效上行信道进行所述上行信号的检测;所述第二公式为:
H(i)'=D(i)W(i)H(i)
其中H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i 的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
或者,
H(i)'=W 1(i)H(i)
其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
所述收发机902,用于向终端发送用于确定所述D(i)的指示消息。
可选的,所述D(i)或D q中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000089
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000090
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000091
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000092
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
可选的,所述θ 1、θ 2或θ 3的取值是根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值是根据发送的第二角度门限确定的,且不大于该第二角度门限,所述收发机902,还用于向所述终端发送所述第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽存在对应关系;或者,
所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽中的子带带宽存在对应关系;或者,
所述收发机902,还用于通过信令向所述终端指示所述θ 1、θ 2或θ 3的取值。
可选的,所述W(i)或W 1(i)是基站通过TPMI为终端指示的一个预编码矩阵;或者,
所述W(i)或W 1(i)是预定义的一个预编码矩阵。
可选的,所述收发机902,还用于向终端发送用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
请参照图10,本公开实施例提供了基站100的另一种结构,如图10所示,该基站100包括:
确定单元101,用于根据终端对上行信号的传输方案,确定上行信号的调度信息;
其中,所述传输方案包括:在预编码处理过程中,在多个天线端口上对上行信号进行延迟处理,或者,循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
可选的,所述上行信号的调度信息包括:MCS、传输预编码矩阵指示TPMI、传输层数和对应的SRS资源指示中的至少一种。
可选的,所述基站还包括:
检测单元,用于采用与终端对上行信号的预编码方案相对应的方案,进行所述上行信号的检测。
可选的,所述在多个天线端口上对上行信号进行延迟处理或者所述循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理为:利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000093
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵,x(i)=[x (0)(i) ... x (υ-1)(i)] T;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;或者,
利用以下公式,对上行信号的数据流进行预编码处理:
Figure PCTCN2019105613-appb-000094
其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i) ... x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵;v表示用于计算等效信道的数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目。
可选的,确定单元101,还用于获取等效上行信道,并利用所述等效上 行信道确定上行信号的调度信息;
所述第二公式为:
H(i)'=D(i)W(i)H(i);
其中H(i)是基站根据用于上行信道状态信息CSI(Channel State Information)获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
或者,所述第二公式为:H(i)'=W 1(i)H(i)
其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
可选的,所述处理器901,还用于利用第二公式,获取等效上行信道,并利用所述等效上行信道进行所述上行信号的检测;所述第二公式为:
H(i)'=D(i)W(i)H(i)
其中H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行 信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
或者,
H(i)'=W 1(i)H(i)
其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
所述基站还包括:收发单元,用于向终端发送用于确定所述D(i)的指示消息。
可选的,所述D(i)或D q中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
Figure PCTCN2019105613-appb-000095
或者,
当终端能力为非相干传输时,
Figure PCTCN2019105613-appb-000096
当终端能力为全相干传输时,
Figure PCTCN2019105613-appb-000097
当终端能力为部分相干传输时,
Figure PCTCN2019105613-appb-000098
其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
可选的,所述θ 1、θ 2或θ 3的取值是根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
所述θ 1、θ 2或θ 3的取值是根据发送的第二角度门限确定的,且不大于该第二角度门限,所述基站还包括:
收发单元,用于向所述终端发送所述第二角度门限;或者,
所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽存在对应关系;或者,
所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽中的子带带宽存在对应关系;或者,
所述收发单元,还用于通过信令向所述终端指示所述θ 1、θ 2或θ 3的取值。
可选的,所述W(i)或W 1(i)是基站通过TPMI为终端指示的一个预编码矩阵;或者,
所述W(i)或W 1(i)是预定义的一个预编码矩阵。
可选的,所述收发单元,还用于向终端发送用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用一候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一 些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本公开实施例方案的目的。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来控制相关的硬件来完成,所述的程序可存储于一计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory,ROM)或随机存储记忆体(Random Access Memory,RAM)等。
可以理解的是,本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制 器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
以上所述,仅为本公开的具体实施方式,但本公开的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本公开揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本公开的保护范围之内。因此,本公开的保护范围应以权利要求的保护范围为准。

Claims (60)

  1. 一种上行传输方法,应用于终端,包括:
    在多个天线端口上对上行信号进行延迟处理后发送。
  2. 根据权利要求1所述的方法,其中,所述在多个天线端口上对上行信号进行延迟处理的步骤,包括:
    利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100001
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号。
  3. 根据权利要求2所述的方法,其中,
    所述D(i)为一个与终端的相干传输能力有关的方阵;或者,
    所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;
    或者,
    当终端能力为非相干传输时,所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述D(i)为一单位阵;当终端能力为部分相干传输时,所述D(i)为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
  4. 根据权利要求3所述的方法,其中,所述D(i)中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
    Figure PCTCN2019105613-appb-100002
    或者,
    当终端能力为非相干传输时,
    Figure PCTCN2019105613-appb-100003
    当终端能力为全相干传输时,
    Figure PCTCN2019105613-appb-100004
    当终端能力为部分相干传输时,
    Figure PCTCN2019105613-appb-100005
    其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
  5. 根据权利要求2至4任一项所述的方法,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一个子带的每个x(i)对应的D(i)均相同,且该D(i)的取值与子带的编号或频率之间具有预定规律;或者,
    映射至同一子带的每个x(i)对应的D(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
  6. 根据权利要求2所述的方法,还包括:
    接收基站发送的用于确定所述D(i)的指示消息;
    利用所述指示消息确定D(i)。
  7. 根据权利要求4所述的方法,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值均相同,且n 1的取值随着子带对应的频率的递增而递增或递减;或者,
    映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值,根据x(i)对应的资源单元在子带中的频域位置确定,且n 1的取值随着x(i)对应的资源单元的频率的递增而递增或递减。
  8. 根据权利要求4所述的方法,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    对所述子带按照频率递增的方式从1到B进行编号,n 1等于x(i)所要映 射的资源单元所在的子带的编号;或者,
    在一个所述子带内对数据符号占用的资源单元按照频率递增的方式从1开始进行编号,n 1等于所述x(i)在子带中的数据符号的编号。
  9. 根据权利要求1所述的方法,其中,所述在多个天线端口上对上行信号进行延迟处理的步骤,包括:
    利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100006
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;
    所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵。
  10. 根据权利要求9所述的方法,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一个子带的每个x(i)所对应的W 1(i)均相同,且该W 1(i)的取值与子带的编号或频率之间具有预定规律;或者,
    映射至同一子带的每个x(i)所对应的W 1(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
  11. 根据权利要求9所述的方法,还包括:
    接收基站发送的用于确定所述D q的指示消息;
    利用所述指示消息确定D q
  12. 根据权利要求9所述的方法,其中,
    所述第一候选码字集合中的任一码字D q均为一对角阵,且主对角线上的 各个元素分别对应于不同的相位偏移;
    或者,
    当终端能力为非相干传输时,所述第一候选码字集合中的任一码字D均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述第一候选码字集合中的任一码字D均为一单位阵;当终端能力为部分相干传输时,所述第一候选码字结合中的任一码字D q均为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
  13. 根据权利要求9所述的方法,其中,
    所述D q中第l行第m列的元素d l,m的取值按照以下方式确定:
    Figure PCTCN2019105613-appb-100007
    或者,
    当终端能力为非相干传输时,
    Figure PCTCN2019105613-appb-100008
    当终端能力为全相干传输时,
    Figure PCTCN2019105613-appb-100009
    当终端能力为部分相干传输时,
    Figure PCTCN2019105613-appb-100010
    其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;所述n 2的取值范围为1到M,其中,所述M为一个大于1的整数。
  14. 根据权利要求13所述的方法,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一子带的所有数据符号对应于相同的n 2,n 2的取值随着子带对应的频率的递增而递增或递减;或者,
    n 2的取值根据所述数据符号x (j)(i)对应的资源单元在其所在的子带中的频域位置确定,n 2的取值随着数据符号对应的资源单元的频率的递增而递增 或递减。
  15. 根据权利要求13所述的方法,其中,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
    在所述x(i)所要映射的时频资源在其所在的子带中的序号为L 1时,所述码字W 1(i)是对应预编码矩阵组r 1中的第K 1+1个预编码矩阵,其中,K 1=mod(M 1,L 1);或者,
    在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述码字W 1(i)是对应预编码矩阵组r 2中的第K 2+1个预编码矩阵,其中,K 2=mod(M 2,L 2);
    其中,所述M 1、M 1分别为对应预编码矩阵组中的预编码矩阵的数量,所述r 1、r 2分别为预编码矩阵组的编号。
  16. 一种上行传输方法,应用于终端,包括:
    循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理后发送。
  17. 根据权利要求16所述的方法,其中,所述循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理的步骤,包括:
    第一候选码字集合中的码字的维度为P×P,利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100011
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;
    Figure PCTCN2019105613-appb-100012
    表示在第一候选码字集合中序号为q 1的码字;P表示为所述终端配置的所述上行信号所对应的天线端口数目;W 0(i)表示维度P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;x(i)=[x (0)(i)...x (υ-1)(i)] T
    或者,
    第一候选码字集合中的码字的维度为P×υ,利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100013
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;W 1(i)表示候选预编码矩阵集合W 1 s(i)中第m个候选码字集合的第q 1+1个码字;W 1 s(i)包括R个候选码字集合,所述第一候选码字集合为该R个候选码字集合中的一个;其中第r个候选码字集合中的第q个码字满足W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W r表示维度P×υ的参考预编码矩阵;x(i)=[x (0)(i)...x (υ-1)(i)] T
  18. 根据权利要求17所述的方法,其中,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
    在所述x(i)所要映射的资源单元在其所在的子带中的数据符号的序号为L 1时,所述q 1=mod(M 2,L 1);或者,
    在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述q 1=mod(M 2,L 2);
    其中,所述M 2为所述第一候选码字集合中的码字的数量。
  19. 根据权利要求4或13所述的方法,其中,
    所述θ 1、θ 2或θ 3的取值是终端自行确定的;或者;
    所述θ 1、θ 2或θ 3的取值是终端根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
    所述θ 1、θ 2或θ 3的取值是终端根据一基站发送的第二角度门限确定的,且不大于该第二角度门限;或者,
    所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
    所述θ 1、θ 2或θ 3的取值是根据上行信号的调度带宽确定的值;或者,
    所述θ 1、θ 2或θ 3的取值是根据上行信号的调度带宽中的子带带宽确定的值;或者,
    所述θ 1、θ 2或θ 3的取值是基站通过信令指示给终端的。
  20. 根据权利要求2或9或17所述的方法,其中,
    所述参考预编码矩阵是基站通过传输预编码矩阵指示TPMI为终端指示的一个预编码矩阵;或者,
    所述参考预编码矩阵是预定义的一个预编码矩阵;或者,
    所述参考预编码矩阵是从上行码本中选择出的一个预编码矩阵。
  21. 根据权利要求1或16所述的方法,其中,
    所述上行信号为物理上行共享信道PUSCH、物理上行控制信道PUCCH、PUSCH的解调参考信号DMRS和PUCCH的DMRS中的一种或多种。
  22. 根据权利要求1或16所述的方法,其中,
    所述终端被配置了基于码本的上行信号传输,且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配;
    或者,所述终端被配置了基于码本的上行信号传输,且所述终端配置进行单流传输;
    或者,所述终端被配置了基于码本的上行信号传输,且所述终端配置进行单流传输,并且所述终端的相干传输能力与基站配置的码字或码本子集限制参数不匹配。
  23. 根据权利要求1或16所述的方法,还包括:
    接收基站发送的用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
  24. 一种上行传输的调度方法,应用于基站,包括:
    根据终端对上行信号的传输方案,确定上行信号的调度信息;
    其中,所述传输方案包括:在多个天线端口上对上行信号进行延迟处理,或者,循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
  25. 根据权利要求24所述的方法,其中,
    所述上行信号的调度信息包括:调制与编码策略MCS、传输预编码矩阵指示TPMI、传输层数和对应的探测参考信号SRS资源指示中的至少一种。
  26. 根据权利要求24所述的方法,还包括:
    采用与终端对上行信号的预编码方案相对应的方案,进行所述上行信号的检测。
  27. 根据权利要求24或26所述的方法,其中,
    所述在多个天线端口上对上行信号进行延迟处理或者所述循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理为:利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100014
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵,x(i)=[x (0)(i)...x (υ-1)(i)] T;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;或者,
    利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100015
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵;v表示用于计算等效信道的数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目。
  28. 根据权利要求27所述的方法,其中,根据终端对上行信号的传输方案,确定上行信号的调度信息,包括:
    利用第二公式,获取等效上行信道,并利用所述等效上行信道确定上行信号的调度信息;所述第二公式为:
    H(i)'=D(i)W(i)H(i);
    其中H(i)是基站根据用于上行信道状态信息CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
    或者,所述第二公式为:H(i)'=W 1(i)H(i)
    其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度为P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
  29. 根据权利要求26所述的方法,其中,所述采用与终端对上行信号的预编码方案相对应的方案,进行所述上行信号的检测,包括:
    利用第二公式,获取等效上行信道,并利用所述等效上行信道进行所述上行信号的检测;所述第二公式为:
    H(i)'=D(i)W(i)H(i)
    其中H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i 的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
    或者,
    H(i)'=W 1(i)H(i)
    其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
  30. 根据权利要求28或29所述的方法,还包括:
    向终端发送用于确定所述D(i)或D q的指示消息。
  31. 根据权利要求28所述的方法,其中,所述D(i)或D q中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
    Figure PCTCN2019105613-appb-100016
    或者,
    当终端能力为非相干传输时,
    Figure PCTCN2019105613-appb-100017
    当终端能力为全相干传输时,
    Figure PCTCN2019105613-appb-100018
    当终端能力为部分相干传输时,
    Figure PCTCN2019105613-appb-100019
    其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
  32. 根据权利要求31所述的方法,其中,
    所述θ 1、θ 2或θ 3的取值是根据一预先约定的第一角度门限确定的,且不大于该第一角度门限;或者,
    所述θ 1、θ 2或θ 3的取值是根据发送的第二角度门限确定的,且不大于该第二角度门限,所述方法还包括:向所述终端发送所述第二角度门限;或者,
    所述θ 1、θ 2或θ 3的取值是协议约定的值;或者,
    所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽存在对应关系;或者,
    所述θ 1、θ 2或θ 3的取值与上行信号的调度带宽中的子带带宽存在对应关系;或者,
    所述方法还包括:通过信令向所述终端指示所述θ 1、θ 2或θ 3的取值。
  33. 根据权利要求30所述的方法,其中,
    所述W(i)或W 1(i)是基站通过TPMI为终端指示的一个预编码矩阵;或者,
    所述W(i)或W 1(i)是预定义的一个预编码矩阵。
  34. 根据权利要求24所述的方法,还包括:
    向终端发送用于指示在多个天线端口上对上行信号进行预定处理的指示信息,所述预定处理包括在预编码处理过程中在多个天线端口上对上行信号进行延迟处理或者循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
  35. 一种终端,包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;
    所述处理器,用于读取存储器中的程序,执行下列过程:在多个天线端口上对上行信号进行延迟处理。
  36. 如权利要求35所述的终端,其中,
    所述处理器,还用于利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100020
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号。
  37. 根据权利要求36所述的终端,其中,
    所述D(i)为一个与终端的相干传输能力有关的方阵;或者,
    所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;
    或者,
    当终端能力为非相干传输时,所述D(i)为一对角阵,且主对角线上的各元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述D(i)为一单位阵;当终端能力为部分相干传输时,所述D(i)为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
  38. 根据权利要求37所述的终端,其中,所述D(i)中第l行第m列的元素d(i) l,m的取值按照以下方式确定:
    Figure PCTCN2019105613-appb-100021
    或者,
    当终端能力为非相干传输时,
    Figure PCTCN2019105613-appb-100022
    当终端能力为全相干传输时,
    Figure PCTCN2019105613-appb-100023
    当终端能力为部分相干传输时,
    Figure PCTCN2019105613-appb-100024
    其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;n 1为一大于0的整数。
  39. 根据权利要求36至38任一项所述的终端,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一个子带的每个x(i)对应的D(i)均相同,且该D(i)的取值与子带的编号或频率之间具有预定规律;或者,
    映射至同一子带的每个x(i)对应的D(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
  40. 根据权利要求36所述的终端,其中,
    所述处理器,还用于利用基站发送的用于确定所述D(i)的指示消息确定D(i)。
  41. 根据权利要求38所述的终端,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值均相同,且n 1的取值随着子带对应的频率的递增而递增或递减;或者,
    映射至同一个子带的每个x(i)所对应的D(i)中,n 1的取值,根据x(i)对应的资源单元在子带中的频域位置确定,且n 1的取值随着x(i)对应的资源单元的频率的递增而递增或递减。
  42. 根据权利要求35所述的终端,其中,
    所述处理器,还用于利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100025
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应 于x(i)的映射到天线端口p的符号,p表示天线端口的序号;
    所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵。
  43. 根据权利要求42所述的终端,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一个子带的每个x(i)所对应的W 1(i)均相同,且该W 1(i)的取值与子带的编号或频率之间具有预定规律;或者,
    映射至同一子带的每个x(i)所对应的W 1(i)的取值,根据该x(i)对应的资源单元在子带中的频域位置确定。
  44. 根据权利要求42所述的终端,其中,
    所述处理器,还用于利用基站发送的用于确定所述D q的指示消息确定D q
  45. 根据权利要求42所述的终端,其中,
    所述第一候选码字集合中的任一码字D q均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;
    或者,
    当终端能力为非相干传输时,所述第一候选码字集合中的任一码字D均为一对角阵,且主对角线上的各个元素分别对应于不同的相位偏移;当终端能力为全相干传输时,所述第一候选码字集合中的任一码字D均为一单位阵;当终端能力为部分相干传输时,所述第一候选码字结合中的任一码字D q均为一对角阵,且对应于同一相干传输天线组的元素具有相同的相位偏移,对应于不同相干传输天线组的元素具有不同的相位偏移。
  46. 根据权利要求42所述的终端,其中,
    所述D q中第l行第m列的元素d l,m的取值按照以下方式确定:
    Figure PCTCN2019105613-appb-100026
    或者,
    当终端能力为非相干传输时,
    Figure PCTCN2019105613-appb-100027
    当终端能力为全相干传输时,
    Figure PCTCN2019105613-appb-100028
    当终端能力为部分相干传输时,
    Figure PCTCN2019105613-appb-100029
    其中,a z为对应于第z个相干传输天线组的系数;所述θ 1、θ 2或θ 3均为一预定角度值;所述n 2的取值范围为1到M,其中,所述M为一个大于1的整数。
  47. 根据权利要求46所述的终端,其中,所述上行信号的调度带宽包括B个子带,所述B为大于或等于1的整数;
    映射至同一子带的所有数据符号对应于相同的n 2,n 2的取值随着子带对应的频率的递增而递增或递减;或者,
    n 2的取值根据所述数据符号x (j)(i)对应的资源单元在其所在的子带中的频域位置确定,n 2的取值随着数据符号对应的资源单元的频率的递增而递增或递减。
  48. 一种终端,包括:
    存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;
    所述处理器,用于读取存储器中的程序,执行下列过程:循环利用第一候选码字集合中的码字,在多个天线端口上对上行信号进行预编码处理。
  49. 根据权利要求48所述的终端,其中,
    第一候选码字集合中的码字的维度为P×P,所述处理器,还用于:
    利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100030
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;
    Figure PCTCN2019105613-appb-100031
    表示在第一候选码字集合中序号为q 1的码字;P表 示为所述终端配置的所述上行信号所对应的天线端口数目;W 0(i)表示维度P×υ的参考预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;x(i)=[x (0)(i)...x (υ-1)(i)] T
    或者,
    第一候选码字集合中的码字的维度为P×υ,所述处理器,还用于:
    利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100032
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;W 1(i)表示候选预编码矩阵集合W 1 s(i)中第m个候选码字集合的第q 1+1个码字;W 1 s(i)包括R个候选码字集合,所述第一候选码字集合为该R个候选码字集合中的一个;其中第r个候选码字集合中的第q个码字满足W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W r表示维度P×υ的参考预编码矩阵;x(i)=[x (0)(i)...x (υ-1)(i)] T
  50. 根据权利要求49所述的终端,其中,所述上行信号的调度带宽包括序号从0到B-1的共B个子带,所述B为大于或等于1的整数;
    在所述x(i)所要映射的资源单元在其所在的子带中的数据符号的序号为L 1时,所述q 1=mod(M 2,L 1);或者,
    在所述x(i)所要映射的资源单元所在的子带的序号为L 2时,所述q 1=mod(M 2,L 2);
    其中,所述M 2为所述第一候选码字集合中的码字的数量。
  51. 一种终端,包括:
    编码处理单元,用于在多个天线端口上对上行信号进行延迟处理;
    发送单元,用于发送经延迟处理后的上行信号。
  52. 一种终端,包括:
    编码处理单元,用于循环利用第一候选码字集合中的码字,在多个天线 端口上对上行信号进行预编码处理;
    发送单元,用于发送经预编码处理后的上行信号。
  53. 一种基站,包括:存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;
    所述处理器,用于读取存储器中的程序,执行下列过程:根据终端对上行信号的传输方案,确定上行信号的调度信息;
    其中,所述传输方案包括:在预编码处理过程中,在多个天线端口上对上行信号进行延迟处理,或者,循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
  54. 根据权利要求53所述的基站,其中,
    所述上行信号的调度信息包括:调制与编码策略MCS、传输预编码矩阵指示TPMI、传输层数和对应的探测参考信号SRS资源指示中的至少一种。
  55. 根据权利要求53所述的基站,其中,
    所述处理器,还用于采用与终端对上行信号的预编码方案相对应的方案,进行所述上行信号的检测。
  56. 根据权利要求53或55所述的基站,其中,
    所述在多个天线端口上对上行信号进行延迟处理或者所述循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理为:利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100033
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号,v表示数据流数;D(i)表示对应于x(i)的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 0(i)表示对应于x(i)的维度为P×υ的参考预编码矩阵,x(i)=[x (0)(i)...x (υ-1)(i)] T;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;或者,
    利用以下公式,对上行信号的数据流进行预编码处理:
    Figure PCTCN2019105613-appb-100034
    其中,x (u)(i)表示上行信号的序号为u的数据流中的序号为i的数据符号;v表示数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目;x(i)=[x (0)(i)...x (υ-1)(i)] T;W 1(i)表示预先确定的维度为P×υ的候选预编码矩阵集合W 1 s(i)中的一个预编码矩阵组中的预编码矩阵;y (p)(i)表示对应于x(i)的映射到天线端口p的符号,p表示天线端口的序号;所述候选预编码矩阵集合W 1 s(i)包括R个预编码矩阵组,其中第r个预编码矩阵组中的第q个预编码矩阵W q,s满足W q,s=D qW r;D q表示由维度P×P的方阵构成的第一候选码字集合中的第q个码字;W r表示维度为P×υ的参考预编码矩阵;v表示用于计算等效信道的数据流数;P表示为所述终端配置的所述上行信号所对应的天线端口数目。
  57. 根据权利要求56所述的基站,其中,
    所述处理器,还用于利用第二公式,获取等效上行信道,并利用所述等效上行信道确定上行信号的调度信息;
    所述第二公式为:
    H(i)'=D(i)W(i)H(i);
    其中H(i)是基站根据用于上行信道状态信息CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
    或者,所述第二公式为:H(i)'=W 1(i)H(i)
    其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示 码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
  58. 根据权利要求55所述的基站,其中,
    所述处理器,还用于利用第二公式,获取等效上行信道,并利用所述等效上行信道进行所述上行信号的检测;所述第二公式为:
    H(i)'=D(i)W(i)H(i)
    其中H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;D(i)是对应于序号为i的资源单元的维度为P×P的方阵,P表示为所述终端配置的所述上行信号所对应的天线端口数目;W(i)是基站用于计算对应于序号为i的资源单元的等效信道使用的参考预编码矩阵,同一子带内的所有资源单元对应于相同的D(i),D(i)的取值与子带的编号或频率之间具有预定规律,或者,D(i)的取值根据序号为i的资源单元在子带中的频域位置确定;
    或者,
    H(i)'=W 1(i)H(i)
    其中,H(i)是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道估计值,H(i)'是基站根据用于上行CSI获取的参考信号获得的对应于序号为i的资源单元的上行信道的等效信道;W 1(i)表示码字集合W 1 s(i)中对应于资源单元i的预编码矩阵W 1;W 1 s(i)可分成K个码字组,其中第k个码字组中的第q个码字满足W q,s=D qW k;D q表示由维度P×P的方阵构成的第二候选码字集合中的第q个码字;W k表示维度P×υ的参考预编码矩阵;基站循环利用第一候选码字集合中的码字确定各个资源单元的W 1,第一候选码字集合为W 1 s(i)中的一个码字组。
  59. 一种基站,包括:
    确定单元,用于根据终端对上行信号的传输方案,确定上行信号的调度 信息;
    其中,所述传输方案包括:在预编码处理过程中,在多个天线端口上对上行信号进行延迟处理,或者,循环利用候选码本集合中的码本,在多个天线端口上对上行信号进行预编码处理。
  60. 一种计算机可读存储介质,包括指令,当所述指令在计算机运行时,使得计算机执行如权利要求1至23任一项所述的上行传输方法,或者执行如权利要求24至34任一项所述的上行传输方法。
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KR20210068107A (ko) 2021-06-08
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