WO2016107472A1 - 解调参考信号的传输装置、系统及方法 - Google Patents

解调参考信号的传输装置、系统及方法 Download PDF

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Publication number
WO2016107472A1
WO2016107472A1 PCT/CN2015/098395 CN2015098395W WO2016107472A1 WO 2016107472 A1 WO2016107472 A1 WO 2016107472A1 CN 2015098395 W CN2015098395 W CN 2015098395W WO 2016107472 A1 WO2016107472 A1 WO 2016107472A1
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WO
WIPO (PCT)
Prior art keywords
dmrs
uplink data
pusch
indication
time slot
Prior art date
Application number
PCT/CN2015/098395
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English (en)
French (fr)
Inventor
杨晓东
权威
李秉肇
胡振兴
张戬
苗金华
贺传峰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18209096.9A priority Critical patent/EP3518453B1/en
Priority to EP15875150.3A priority patent/EP3232596B1/en
Publication of WO2016107472A1 publication Critical patent/WO2016107472A1/zh
Priority to US15/637,277 priority patent/US10673670B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/121Wireless traffic scheduling for groups of terminals or users
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a transmission apparatus, system, and method for demodulating reference signals.
  • FIG. 1 to FIG. 4 are schematic diagrams showing the transmission of a part of a physical channel of a Frequency Division Duplexing (FDD) in the LTE system of the prior art.
  • FDD Frequency Division Duplexing
  • the uplink and downlink are carried on different carriers, and the physical downlink control channel (Physical)
  • the Downlink Control Channel (referred to as PDCCH) schedules the transmission of a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) and a physical uplink shared channel (PUSCH).
  • the physical uplink control channel (Physical Uplink Control Channel abbreviation; PUCCH) can be used to carry feedback information of the PDSCH. That is, the network is notified whether the UE correctly receives data carried by the PDSCH.
  • the Physical Hybrid-ARQ Indicator Channel (PHICH) is used to carry the feedback information of the PUSCH, that is, the network notifies the user equipment (User Equipment, UE for short) whether the information transmitted by the PUSCH is correctly received.
  • the relationship between the PUSCH channel data part and the Demodulation Reference Signal (DMRS) is shown in FIG. 2 .
  • the relationship between the PUCCH channel data portion and the DMRS is shown in FIG.
  • the existing DMRS transmission mechanism when it is applied to some scenarios, it cannot meet the requirements of the base station for frequency offset estimation. For example, when transmitting with a TTI of 0.5 ms or shorter, the PUSCH is shortened to 1 time slot. . (while a PUSCH is usually two time slots) And keep the original slot structure of the PUSCH unchanged. Refer to Figure 4. At this time, only one symbol of the DMRS remains in one slot of the prior art. However, when performing frequency offset estimation, at least two symbols of DMRS are needed to ensure the accuracy of the frequency offset estimation. As a result, when the prior art adopts a TTI having a length of 0.5 ms or shorter to transmit, the accuracy of the frequency offset estimation is lowered.
  • the Doppler frequency offset is large at high speed, and the base station does not consider the high-speed mobile factor based on the existing DMRS transmission mechanism, thereby reducing the accuracy of the frequency offset estimation.
  • the existing DMRS transmission mechanism reduces the accuracy of the base station for frequency offset estimation.
  • the invention provides a transmission device, system and method for demodulating reference signals for improving the accuracy of frequency offset estimation.
  • a first aspect of the present invention provides a transmission apparatus for adjusting a reference signal, including:
  • a sending module configured to send a configuration indication to the user equipment UE, where the configuration indication is used to instruct the UE to send an independent demodulation reference signal DMRS; and/or, instruct the UE to send a combination of DMRS and uplink data;
  • a receiving module configured to receive the independent DMRS sent by the UE; and/or receive a combination of the DMRS and uplink data sent by the UE.
  • the method further includes:
  • a processing module configured to determine, before the sending module sends the configuration indication to the user equipment UE, that the transmission time interval is determined to be less than or equal to a time threshold.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data;
  • the at least one uplink data is located in a time slot of the physical uplink shared channel PUSCH.
  • the configuration indication further includes sending location information of the independent DMRS; and/or the DMRS and uplink data The combined location information.
  • the transmission location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located before the time slot of the PUSCH; or the time domain location indicating the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • the time slot in which the at least one DMRS is located is only used Transmitting the at least one DMRS.
  • the time slot in which the independent DMRS is located is only used to transmit the independent DMRS.
  • the configuration also includes a mapping indication
  • the mapping indication is used to indicate that the UE replaces the at least one uplink data with the at least one DMRS, and maps the at least one uplink data to other time-frequency resource locations.
  • the configuration indication is a downlink control information DCI indication of a PDCCH; or, media access control Control element MAC CE indication; or, radio resource control RRC signaling indication.
  • a second aspect of the present invention provides a transmission apparatus for demodulating a reference signal, including:
  • a receiving module configured to receive a configuration indication sent by the base station, where the configuration indication is used to instruct the UE to send an independent demodulation reference signal DMRS; and/or to instruct the UE to send a combination of DMRS and upstream data;
  • a sending module configured to: send the independent DMRS to the base station according to the configuration indication; and/or send the combination of the DMRS and uplink data to the base station according to the configuration indication.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data, where the at least one uplink data is located on a physical uplink shared channel PUSCH Inside the gap.
  • the configuration indication further includes sending location information of the independent DMRS; and/or Transmit location information of a combination of DMRS and uplink data.
  • the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located in a time slot of the PUSCH. Before; or, indicating that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • the method further includes:
  • the configuration indication further includes a mapping indication; and a processing module, configured to Before the transmitting module sends the combination of the DMRS and the uplink data to the base station according to the configuration indication, replacing the at least one uplink data with the at least one DMRS according to the mapping indication, and the at least one The uplink data is mapped to other time-frequency resource locations.
  • the configuration indication is a downlink control information DCI indication of the PDCCH; or, media access control Control element MAC CE indication; or, radio resource control RRC signaling indication.
  • a third aspect of the present invention provides a transmission system for demodulating a reference signal, comprising: at least one transmission device for demodulating a reference signal according to any one of the first aspect or the first aspect; And a transmission device for demodulating a reference signal as described in any one of the second aspect or the second aspect.
  • a fourth aspect of the present invention provides a transmission apparatus for demodulating a reference signal, comprising:
  • a transmitter configured to send a configuration indication to the user equipment UE, where the configuration indication is used to instruct the UE to send an independent demodulation reference signal DMRS; and/or to instruct the UE to send a combination of DMRS and uplink data;
  • a receiver configured to receive the independent DMRS sent by the UE; and/or receive a combination of the DMRS and uplink data sent by the UE.
  • the method further includes:
  • a processor configured to determine, before the transmitter sends the configuration indication to the user equipment UE, that the transmission time interval is determined to be less than or equal to a time threshold.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data;
  • the at least one uplink data is located in a time slot of the physical uplink shared channel PUSCH.
  • the configuration indication further includes sending location information of the independent DMRS; and/or the DMRS and uplink data The combined location information.
  • the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located in a time slot of the PUSCH. Before; or, indicating that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • the time slot in which the independent DMRS is located is only used to transmit the independent DMRS.
  • the configuration also includes a mapping indication
  • the mapping indication is used to indicate that the UE replaces the at least one uplink data with the at least one DMRS, and maps the at least one uplink data to other time-frequency resource locations.
  • the configuration indication is a downlink control information DCI indication of the PDCCH; or, media access control Control element MAC CE indication; or, radio resource control RRC signaling indication.
  • a fifth aspect of the present invention provides a transmission apparatus for demodulating a reference signal, including:
  • a receiver configured to receive a configuration indication sent by the base station, where the configuration indication is used to instruct the UE to send an independent demodulation reference signal DMRS; and/or to instruct the UE to send a combination of DMRS and uplink data;
  • a transmitter configured to: send the independent DMRS to the base station according to the configuration indication; and/or send the combination of the DMRS and uplink data to the base station according to the configuration indication.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data, where the at least one uplink data is located on a physical uplink shared channel PUSCH Inside the gap.
  • the configuration indication further includes a sending position of the independent DMRS Information; and/or transmission location information of a combination of the DMRS and uplink data.
  • the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located in a time slot of the PUSCH. Before; or, indicating that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • the method further includes:
  • the configuration indication further includes a mapping indication; the processor is configured to Before the transmitter transmits the combination of the DMRS and the uplink data to the base station according to the configuration indication, replacing the at least one uplink data with the at least one DMRS according to the mapping indication, and the at least one The uplink data is mapped to other time-frequency resource locations.
  • the configuration indication is a downlink control information DCI indication of the PDCCH; or, media access control Control element MAC CE indication; or, radio resource control RRC signaling indication.
  • a sixth aspect of the present invention provides a method for transmitting a demodulation reference signal, including:
  • the base station sends a configuration indication to the user equipment UE, where the configuration indication is used to instruct the UE to send an independent demodulation reference signal DMRS; and/or instruct the UE to send a combination of the DMRS and the uplink data;
  • the method before the sending, by the base station, the configuration indication to the user equipment UE, the method further includes:
  • the base station determines that the transmission time interval is determined to be less than or equal to a time threshold.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data;
  • the at least one uplink data is located in a time slot of the PUSCH.
  • the configuration indication further includes sending location information of the independent DMRS; and/or the DMRS and uplink data The combined location information.
  • the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located in a time slot of the PUSCH. Before; or, indicating that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • a sixth feasible implementation manner When the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or when the time domain location of the at least one DMRS is located after the time slot of the PUSCH, the time slot in which the at least one DMRS is located is only used Transmitting the at least one DMRS.
  • the time slot in which the independent DMRS is located is only used to transmit the independent DMRS.
  • the configuration also includes a mapping indication
  • the mapping indication is used to indicate that the UE replaces the at least one uplink data with the at least one DMRS, and maps the at least one uplink data to other frequency time resource bits Set.
  • the configuration indication is a downlink control information DCI indication of the PDCCH; or, media access control Control element MAC CE indication; or, radio resource control RRC signaling indication.
  • a seventh aspect of the present invention provides a method for transmitting a demodulation reference signal, including:
  • a configuration indication sent by the base station where the configuration indication is used to instruct the UE to send an independent demodulation reference signal DMRS; and/or instructing the UE to send a combination of the DMRS and the uplink data;
  • the UE sends the combination of the DMRS and the uplink data to the base station according to the configuration indication.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data; wherein, when the at least one uplink data is located on a physical uplink shared channel PUSCH Inside the gap.
  • the configuration indication further includes sending location information of the independent DMRS; and/or Transmit location information of a combination of DMRS and uplink data.
  • the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located in a time slot of the PUSCH. Before; or, indicating that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • the configuration indication is further included With mapping indication;
  • the method further includes:
  • the UE replaces the at least one uplink data with the at least one DMRS according to the mapping indication, and maps the at least one uplink data to other frequency time resource locations.
  • the configuration indication is a downlink control information DCI indication of a PDCCH; or, media access control Control element MAC CE indication; or, radio resource control RRC signaling indication.
  • the base station sends a configuration indication to the user equipment UE, where the configuration indication is used to instruct the UE to send an independent DMRS; and/or, the indication is
  • the UE sends a combination of DMRS and uplink data; then, the base station receives the independent DMRS sent by the UE; and/or receives a combination of the DMRS and uplink data sent by the UE. Therefore, the base station can trigger the UE to send the foregoing DMRS to complete the frequency offset estimation, and improve the accuracy of the frequency offset estimation.
  • FIG. 4 are schematic diagrams showing the physical channel transmission of an FDD portion of a prior art LTE system
  • FIG. 5 is a schematic structural diagram of a transmission apparatus for demodulating a reference signal according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of another apparatus for transmitting a demodulation reference signal according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of another apparatus for transmitting a demodulation reference signal according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another transmission apparatus for demodulating reference signals according to an embodiment of the present invention. intention;
  • FIG. 9 is a schematic structural diagram of another universal transmission apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart diagram of a method for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • FIG. 11 is a schematic flowchart diagram of another method for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a time domain location of the at least one DMRS
  • FIG. 13 is a schematic diagram of a DMRS pattern according to an embodiment of the present invention.
  • FIG. 14 is a schematic flowchart diagram of another method for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • FIG. 15 is a schematic flowchart diagram of another method for transmitting a demodulation reference signal according to an embodiment of the present disclosure
  • FIG. 16 is a schematic diagram of physical channel transmission after uplink data replacement based on a mapping indication.
  • the transmission apparatus, system and method for demodulating reference signals provided by the embodiments of the present invention can accurately estimate the frequency offset value in any scene by flexibly transmitting the DMRS.
  • the solution of the present invention will now be described by way of specific examples.
  • FIG. 5 is a schematic structural diagram of a transmission apparatus for demodulating a reference signal according to an embodiment of the present disclosure.
  • the transmission apparatus is a base station or an evolved Node B (abbreviated as eNB).
  • eNB evolved Node B
  • the transmission apparatus includes : sending module 100, receiving module 101;
  • the sending module 100 is configured to send a configuration indication to the user equipment UE, where the configuration indication is used to instruct the UE to send an independent DMRS; and/or instruct the UE to send a combination of DMRS and uplink data;
  • the receiving module 101 is configured to receive the independent DMRS sent by the UE, and/or receive a combination of the DMRS and uplink data sent by the UE.
  • the transmission device of the demodulation reference signal provided by the embodiment of the present invention sends a configuration indication to the user equipment UE by using the sending module, where the configuration indication is used to instruct the UE to send an independent DMRS; and/or, the UE is instructed to send the DMRS.
  • the combination of the uplink data; the receiving module receives the independent DMRS sent by the UE; and/or receives a combination of the DMRS and uplink data sent by the UE. Therefore, the base station can trigger the UE to send the foregoing DMRS to complete the frequency offset estimation, and improve the accuracy of the frequency offset estimation.
  • the existing LTE system does not have a corresponding design for a high-speed mobile scene with a speed of 400KM/hour or 500KM/hour.
  • the high speed causes the Doppler frequency to be large. Therefore, when the existing LTE technology is used to perform frequency offset in a high-speed mobile scene, the accuracy is also reduced.
  • the transmitting device triggers the UE to send one or more independent DMRSs before scheduling the PUSCH, that is, by instructing the UE to send at least one independent DMRS, after receiving the at least one independent DMRS, the base station first performs the frequency.
  • the UE is scheduled to transmit the PUSCH.
  • the base station can jointly demodulate the PUSCH according to the frequency offset estimated in advance and the DMRS in the PUSCH. The accuracy of the frequency offset estimation is improved, thereby ensuring the accuracy of demodulating the PUSCH.
  • FIG. 6 is a schematic structural diagram of another apparatus for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • the transmission apparatus further includes: a processing module 102;
  • the processing module 102 is configured to determine that the transmission time interval is determined to be less than or equal to a time threshold before the sending module 100 sends the configuration indication to the user equipment UE.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data; wherein the at least one uplink data is located in a time slot of the PUSCH.
  • the configuration indication further includes sending location information of the independent DMRS; and/or sending location information of a combination of the DMRS and uplink data.
  • the transmission location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located before the time slot of the PUSCH; or the time domain location indicating the independent DMRS is located after the time slot of the PUSCH;
  • Sending location information of the combination of the DMRS and the uplink data is used to indicate the at least one
  • the time domain location of the DMRS is located before the time slot of the PUSCH; or, the time domain location indicating the at least one DMRS is located after the time slot of the PUSCH; or the time domain location indicating the at least one DMRS is located within the time slot of the PUSCH.
  • the time domain location of the at least one DMRS is located before a time slot of the PUSCH; or when the time domain location of the at least one DMRS is located after a time slot of the PUSCH, the time at which the at least one DMRS is located The slot is only used to transmit the at least one DMRS.
  • the time slot in which the independent DMRS is located is only used to transmit the independent DMRS.
  • the configuration indication further includes a mapping indication
  • the mapping indication is used to indicate that the UE replaces the at least one uplink data with the at least one DMRS, and maps the at least one uplink data to other time-frequency resource locations.
  • the configuration indication is a DCI indication of the PDCCH; or, the MAC CE indicates; or, the RRC signaling indicates.
  • FIG. 7 is a schematic structural diagram of another apparatus for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • the transmission apparatus is a UE, and may be: a smart phone, a tablet computer, or the like. Referring to FIG. 7, the transmission apparatus includes: The sending module 200, the receiving module 201;
  • the receiving module 201 is configured to receive a configuration indication sent by the base station, where the configuration indication is used to instruct the UE to send an independent DMRS, and/or to instruct the UE to send a combination of the DMRS and the uplink data.
  • the sending module 200 is configured to: send the independent DMRS to the base station according to the configuration indication; and/or send the combination of the DMRS and uplink data to the base station according to the configuration indication.
  • the apparatus for transmitting a demodulation reference signal provided by the embodiment of the present invention, the receiving module receives a configuration indication sent by the base station, where the configuration indication is used to instruct the UE to send an independent DMRS; and/or, the UE is instructed to send the DMRS and Combining the uplink data; sending, by the sending module, the independent DMRS to the base station according to the configuration indication; and/or transmitting the combination of the DMRS and the uplink data to the base station according to the configuration indication.
  • the base station triggers the UE to send the foregoing DMRS to complete the frequency offset estimation, which improves the accuracy of the frequency offset estimation.
  • the existing LTE system does not have a corresponding design for a high-speed mobile scene with a speed of 400KM/hour or 500KM/hour.
  • the high speed causes the Doppler frequency to be large. Therefore, when the existing LTE technology is used to perform frequency offset in a high-speed mobile scene, the accuracy is also reduced.
  • the scheme shown in FIG. 7 triggers the UE to send one or more independent DMRSs before scheduling the PUSCH, that is, after the base station receives at least one independent DMRS sent by the UE, first performs frequency offset estimation.
  • the UE is rescheduled to transmit the PUSCH.
  • the base station can jointly demodulate the PUSCH according to the frequency offset estimated in advance and the DMRS in the PUSCH. The accuracy of the frequency offset estimation is improved, thereby ensuring the accuracy of demodulating the PUSCH.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data; wherein the at least one uplink data is located in a time slot of the PUSCH.
  • the configuration indication further includes sending location information of the independent DMRS; and/or sending location information of a combination of the DMRS and uplink data.
  • the transmission location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located before the time slot of the PUSCH; or the time domain location indicating the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before the time slot of the PUSCH; or the time domain location indicating that the at least one DMRS is located after the time slot of the PUSCH; or The time domain location indicating the at least one DMRS is located within a time slot of the PUSCH.
  • FIG. 8 is a schematic structural diagram of another apparatus for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • the transmission apparatus further includes: a processing module 202. ;
  • the configuration indication further includes a mapping indication.
  • the processing module 202 is configured to: before the sending module 200 sends the combination of the DMRS and the uplink data to the base station according to the configuration indication, according to the mapping indication Substituting the at least one uplink data with the at least one DMRS and mapping the at least one uplink data to other time-frequency resource locations.
  • the configuration indication is a DCI indication of the PDCCH; or, the MAC CE indicates; or, the RRC signaling indicates.
  • FIG. 9 is a schematic structural diagram of another general-purpose transmission apparatus according to an embodiment of the present invention.
  • the universal transmission apparatus includes: a transmitter 300, a receiver 301, and a processor 302.
  • the transmitter 300 can perform the corresponding function of the foregoing sending module 100, the receiver 301 can perform the corresponding function of the receiving module 101, and the processor 302 can enable the processing module 102. Corresponding functions, thereby achieving the technical effects of the corresponding embodiment of FIG. 5 or FIG. 6.
  • the transmitter 300 can perform the corresponding function of the foregoing sending module 200
  • the receiver 301 can perform the corresponding function of the receiving module 201
  • the processor 302 can perform the corresponding function of the processing module 202.
  • the embodiment of the present invention further provides a transmission system for demodulating a reference signal, which may include at least one of the foregoing base stations or eNBs, and at least one of the foregoing UEs, where the base station or the eNB adopts the method shown in FIG. 5 or FIG. 6 or FIG. Apparatus; the UE employs the apparatus shown in FIG. 7 or FIG. 8 or FIG.
  • a transmission system for demodulating a reference signal which may include at least one of the foregoing base stations or eNBs, and at least one of the foregoing UEs, where the base station or the eNB adopts the method shown in FIG. 5 or FIG. 6 or FIG. Apparatus; the UE employs the apparatus shown in FIG. 7 or FIG. 8 or FIG.
  • FIG. 10 is a schematic flowchart of a method for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • the method is performed by a base station, and may be an evolved base station (evolved Node B, eNB for short).
  • eNB evolved Node B
  • the eNB may perform the corresponding function by using the structure shown in FIG. 5 or FIG. 6 or FIG. 9.
  • the method includes the following steps:
  • Step 100 The base station sends a configuration indication to the user equipment UE, where the configuration indication is used to instruct the UE to send an independent DMRS, and/or instruct the UE to send a combination of the DMRS and the uplink data.
  • independent DMRS refers to a DMRS that is independently transmitted by the UE without relying on uplink data.
  • Step 101 The base station receives the independent DMRS sent by the UE, and/or receives a combination of the DMRS and uplink data sent by the UE.
  • the transmission method of the demodulation reference signal provided by the embodiment of the present invention is set to the user through the base station
  • the standby UE sends a configuration indication, where the configuration indication is used to instruct the UE to send an independent DMRS; and/or, the UE is instructed to send a combination of DMRS and uplink data; subsequently, the base station receives the Independent DMRS; and/or receiving a combination of the DMRS and uplink data sent by the UE. Therefore, the base station can trigger the UE to send the foregoing DMRS to complete the frequency offset estimation, and improve the accuracy of the frequency offset estimation.
  • the existing LTE system does not have a corresponding design for a high-speed mobile scene with a speed of 400KM/hour or 500KM/hour.
  • the high speed causes the Doppler frequency to be large. Therefore, when the existing LTE technology is used to perform frequency offset in a high-speed mobile scene, the accuracy is also reduced.
  • the base station triggers the UE to send one or more independent DMRSs, that is, by instructing the UE to send at least one independent DMRS, the base station receives at least one independent DMRS. Then, the frequency offset estimation is performed first, and the UE is further scheduled to transmit the PUSCH. At this time, the base station can jointly demodulate the PUSCH according to the frequency offset estimated in advance and the DMRS in the PUSCH. The accuracy of the frequency offset estimation is improved, thereby ensuring the accuracy of demodulating the PUSCH.
  • FIG. 11 is a schematic flowchart of another method for transmitting a demodulation reference signal according to an embodiment of the present invention. Can also include:
  • Step 102 The base station determines that the transmission time interval is determined to be less than or equal to a time threshold.
  • the transmission time interval may be the above TTI; the time threshold may be a value less than or equal to 0.5 ms for the scenario described above.
  • the transmission time interval and the time threshold may be set according to system requirements. The invention is not limited.
  • the concept of a DMRS may refer to a DMRS symbol occupying a time-frequency resource location; and an uplink data refers to uplink data occupying a time-frequency resource location.
  • the configuration indication is further used to indicate a location where the independent DMRS is located, and a location where the combination of the DMRS and the uplink data is located; specifically, a feasible implementation manner is:
  • the configuration indication further includes transmission location information of the independent DMRS; and/or transmission location information of a combination of the DMRS and uplink data.
  • Case 1 The transmission location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located before the time slot of the PUSCH;
  • Case 2 the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data it may have the following situations:
  • Case 1 the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before a time slot of the PUSCH;
  • Case 2 the sending location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located after the time slot of the PUSCH;
  • Case 3 The sending location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located within a time slot of the PUSCH.
  • FIG. 12 is a schematic diagram of the time domain location of the at least one DMRS.
  • the time slot on the right side is 1 time slot.
  • the uplink data and a DMRS are added, according to the foregoing configuration indication, a DMRS is added, and the configuration indication indicates that the time domain location of the DMRS is located after the time slot of the PUSCH.
  • the base station when transmitting the combination of the DMRS and the uplink data, the base station will The code of the DMRS is cyclically shifted. In the prior art, when the code of the DMRS is cyclically shifted, only 8 of the 12 cycle values are used, and the remaining 4 cycle values are not used.
  • the at least one DMRS added in the embodiment of the present invention may utilize the above four unused cycle values.
  • the time slot in which the independent DMRS is located is only used to transmit the independent DMRS.
  • the at least The time slot in which one DMRS is located is only used to transmit the at least one DMRS.
  • FIG. 13 is a schematic diagram of a DMRS pattern according to an embodiment of the present invention.
  • FIG. 13 is a feasible implementation manner in which the DMRS does not occupy all 12 subcarriers of the PRB in one PRB, but only occupies 6 subcarriers, and each data is separated by one subcarrier. Thereby the remaining PRBs can be used to transmit upstream data.
  • the configuration indication further includes a mapping indication
  • the mapping indication is used to indicate that the UE replaces the at least one uplink data with the at least one DMRS, and maps the at least one uplink data to other time-frequency resource locations.
  • the UE only needs to send a part of the time-frequency resource position of the uplink data to the at least one DMRS for transmission in the sent uplink data.
  • the part of the uplink data may be mapped to other video resource locations, or directly discarding the part of the uplink data, and the time-frequency resource location is directly sent to the at least one DMRS for transmission.
  • the configuration indication is a DCI indication of a PDCCH; or, a MAC CE indication; or an RRC signaling indication.
  • FIG. 14 is a schematic flowchart of another method for transmitting a demodulation reference signal according to an embodiment of the present invention.
  • the method is performed by a UE, and may be: a smart phone, a tablet computer, etc., and the UE may adopt FIG. 7 or FIG. 8 Or the structure shown in FIG. 9 to implement the corresponding function; 14.
  • the method comprises the steps of:
  • Step 200 The user equipment UE receives a configuration indication sent by the base station, where the configuration indication is used to instruct the UE to send an independent DMRS, and/or, instructs the UE to send a combination of DMRS and uplink data.
  • Step 201 The UE sends the independent DMRS to the base station according to the configuration indication; and/or, the UE sends the combination of the DMRS and the uplink data to the base station according to the configuration indication.
  • the user equipment UE receives a configuration indication sent by the base station, where the configuration indication is used to instruct the UE to send an independent DMRS; and/or, the UE is instructed to send the DMRS.
  • the configuration indication is used to instruct the UE to send an independent DMRS
  • the UE is instructed to send the DMRS.
  • the base station triggers the UE to send the foregoing DMRS to complete the frequency offset estimation, and improves the accuracy of the frequency offset estimation.
  • the existing LTE system does not have a corresponding design for a high-speed mobile scene with a speed of 400KM/hour or 500KM/hour.
  • the high speed causes the Doppler frequency to be large. Therefore, when the existing LTE technology is used to perform frequency offset in a high-speed mobile scene, the accuracy is also reduced.
  • the scheme shown in FIG. 14 triggers the UE to send one or more independent DMRSs before scheduling the PUSCH, that is, after the base station receives at least one independent DMRS sent by the UE, first performs frequency offset estimation.
  • the UE is rescheduled to transmit the PUSCH.
  • the base station can jointly demodulate the PUSCH according to the frequency offset estimated in advance and the DMRS in the PUSCH. The accuracy of the frequency offset estimation is improved, thereby ensuring the accuracy of demodulating the PUSCH.
  • the combination of the DMRS and the uplink data includes at least one DMRS and at least one uplink data; wherein the at least one uplink data is located in a time slot of the PUSCH.
  • the concept of a DMRS may refer to a DMRS symbol occupying a time-frequency resource location; and an uplink data refers to uplink data occupying a time-frequency resource location.
  • the configuration indication is further used to indicate a location where the independent DMRS is located, and a location where the combination of the DMRS and the uplink data is located; specifically, a feasible implementation manner is:
  • the configuration indication further includes sending location information of the independent DMRS; and/or, Transmit location information of a combination of DMRS and uplink data.
  • Case 1 The transmission location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located before the time slot of the PUSCH;
  • Case 2 the sending location information of the independent DMRS is used to indicate that the time domain location of the independent DMRS is located after the time slot of the PUSCH;
  • the transmission location information of the combination of the DMRS and the uplink data it may have the following situations:
  • Case 1 the transmission location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located before a time slot of the PUSCH;
  • Case 2 the sending location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located after the time slot of the PUSCH;
  • Case 3 The sending location information of the combination of the DMRS and the uplink data is used to indicate that the time domain location of the at least one DMRS is located within a time slot of the PUSCH.
  • the time slot in which the independent DMRS is located is only used to transmit the independent DMRS.
  • the at least The time slot in which one DMRS is located is only used to transmit the at least one DMRS.
  • the time slot in which the independent DMRS is located or the time slot in which the combination of the DMRS and the uplink data is located may also be used to transmit uplink data.
  • the time slot in which the independent DMRS is located or the time slot in which the combination of the DMRS and the uplink data is located may also be used to transmit uplink data.
  • the configuration indication further includes a mapping indication
  • the mapping indication is used to indicate that the UE replaces the at least one uplink data with the at least one DMRS, and maps the at least one uplink data to other time-frequency resource locations.
  • FIG. 15 is a schematic flowchart of another method for transmitting a demodulation reference signal according to an embodiment of the present invention. Referring to FIG. 15, before step 201, the method further includes:
  • Step 202 The UE replaces the at least one uplink data with the at least one DMRS according to the mapping indication, and maps the at least one uplink data to other frequency time resource locations.
  • FIG. 16 is a schematic diagram of physical channel transmission after uplink data replacement based on a mapping indication.
  • the at least one DMRS is not externally extended, and at least one uplink data is only included in a time slot of uplink data to be transmitted.
  • the time-frequency resource location is sent to at least one DMRS.
  • These replaced uplink data can be erased by puncturing, or the uplink data can be mapped to other time-frequency resource locations.
  • a time slot of a PUSCH includes an added DMRS, uplink data, and an original DMRS in the PUSCH.
  • the configuration indication is a DCI indication of the PDCCH; or, the MAC CE indicates; or, the RRC signaling indicates.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明提供一种解调参考信号的传输装置、系统及方法,通过基站向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;随后,所述基站接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。从而使得基站能够触发UE发送上述DMRS来完成频偏估计,提高了频偏估计的准确性。

Description

解调参考信号的传输装置、系统及方法 技术领域
本发明涉及无线通信技术领域,尤其涉及一种解调参考信号的传输装置、系统及方法。
背景技术
在现有的长期演进型(Long Term Evolution,简称:LTE)系统中,子帧长度为1ms,同时设定传输时间间隔(Transmission Time Interval,简称:TTI)长度为1ms。LTE系统所有的调度均是以TTI为最小调度单位进行调度。目前,为了实现更短的数据传输时延,已经提出将TTI长度设置为0.5ms或更短的场景,来实现短的往返时延(Round-Trip Time,简称:RTT),来实现更短的数据传输时延。图1至图4为现有技术LTE系统的频分双工(Frequency Division Duplexing,简称:FDD)部分物理信道发送示意图,参照图1,上下行在不同的载波上承载,物理下行控制信道(Physical Downlink Control Channel简称:PDCCH)调度物理下行共享信道(Physical Downlink Shared Channel,简称:PDSCH)和物理上行共享信道(Physical Uplink Shared Channel,简称:PUSCH)的传输。其中物理上行控制信道(Physical Uplink Control Channel简称;PUCCH)可以用来承载PDSCH的反馈信息。也就是通知网络,UE是否正确接收PDSCH承载的数据。物理HARQ指示信道(Physical Hybrid-ARQ indicator Channel,简称:PHICH)用来承载PUSCH的反馈信息,也就是网络通知用户设备(User Equipment,简称:UE)是否正确接收PUSCH发送的信息。其中PUSCH信道数据部分和解调参考信号(Demodulation Reference Signal,简称:DMRS)关系如图2所示。PUCCH信道数据部分和DMRS关系如图3所示。
但是现有的DMRS传输机制在应用于一些场景时,其不能够满足基站进行频偏估计的要求,例如:当采用长度为0.5ms或更短的TTI进行发送时,PUSCH缩短为1个时隙。(而目前一个PUSCH通常为两个时隙) 并且保持PUSCH的原时隙结构不变。参照图4。此时,现有技术的一个时隙中仅剩下一个符号的DMRS。但是在进行频偏估计时,至少需要两个符号的DMRS,来保证频偏估计的准确性。从而导致当现有技术采用长度为0.5ms或更短的TTI来进行发送时,降低了频偏估计的准确性。又例如:当高铁用户采用现有的LTE技术时,高速导致多普勒频偏较大,而基站基于现有的DMRS传输机制没有考虑到高速移动的因素,从而降低了频偏估计的准确性。
综上所述,现有的DMRS传输机制降低了基站进行频偏估计的准确性。
发明内容
本发明提供一种解调参考信号的传输装置、系统及方法,用于提高频偏估计的准确性。
本发明的第一个方面是提供一种调参考信号的传输装置,包括:
发送模块,用于向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
接收模块,用于接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
结合第一个方面,在第一种可行的实现方式中,还包括:
处理模块,用于在所述发送模块向用户设备UE发送配置指示之前,判断传输时间间隔确定小于或等于时间阈值。
结合第一个方面或第一个方面的第一种可行的实现方式,在第二种可行的实现方式中,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
结合第一个方面的第二种可行的实现方式,在第三种可行的实现方式中,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
结合第一个方面的第三种可行的实现方式,在第四种可行的实现方 式中,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
结合第一个方面的第二种可行的实现方式或第一个方面的第三种可行的实现方式或第一个方面的第四种可行的实现方式,在第五种可行的实现方式中,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
结合第一个方面或第一个方面的上述任意一种可行的实现方式,在第六种可行的实现方式中,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
结合第一个方面的第二种可行的实现方式或第一个方面的第三种可行的实现方式或第一个方面的第四种可行的实现方式或第一个方面的第五种可行的实现方式,在第七种可行的实现方式中,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
结合第一个方面或第一个方面的上述任意一种可行的实现方式,在第八种可行的实现方式中,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
本发明的第二个方面是提供一种解调参考信号的传输装置,包括:
接收模块,用于接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送 DMRS和上行数据的组合;
发送模块,用于:根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
结合第二个方面,在第一种可行的实现方式中,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
结合第二个方面或第二个方面的第一种可行的实现方式,在第二种可行的实现方式中,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
结合第二个方面的第二种可行的实现方式,在第三种可行的实现方式中,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
结合第二个方面的第三种可行的实现方式,在第四种可行的实现方式中,还包括:
当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;处理模块,用于在所述发送模块根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
结合第二个方面或第二个方面的上述任意一种可行的实现方式,在第五种可行的实现方式中,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
本发明的第三个方面是提供一种解调参考信号的传输系统,包括:至少一个第一个方面或第一个方面任意一种可行的实现方式所述的解调参考信号的传输装置;和至少一个第二个方面或第二个方面任意一种可行的实现方式所述的解调参考信号的传输装置。
本发明的第四个方面是提供一种解调参考信号的传输装置,包括:
发射器,用于向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
接收器,用于接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
结合第四个方面,在第一种可行的实现方式中,还包括:
处理器,用于在所述发射器向用户设备UE发送配置指示之前,判断传输时间间隔确定小于或等于时间阈值。
结合第四个方面或第四个方面的第一种可行的实现方式,在第二种可行的实现方式中,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
结合第四个方面的第二种可行的实现方式,在第三种可行的实现方式中,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
结合第四个方面的第三种可行的实现方式,在第四种可行的实现方式中,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
结合第四个方面的第二种可行的实现方式或第四个方面的第三种可行的实现方式或第四个方面的第四种可行的实现方式,在第五种可行的 实现方式中,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
结合第四个方面或第四个方面的上述任意一种可行的实现方式,在第六种可行的实现方式中,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
结合第四个方面的第二种可行的实现方式或第四个方面的第三种可行的实现方式或第四个方面的第四种可行的实现方式或第四个方面的第五种可行的实现方式,在第七种可行的实现方式中,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
结合第四个方面或第四个方面的上述任意一种可行的实现方式,在第八种可行的实现方式中,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
本发明的第五个方面是提供一种解调参考信号的传输装置,包括:
接收器,用于接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
发射器,用于:根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
结合第五个方面,在第一种可行的实现方式中,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
结合第五个方面或第五个方面的第一种可行的实现方式,在第二种可行的实现方式中,所述配置指示还包括所述独立的DMRS的发送位置 信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
结合第五个方面的第二种可行的实现方式,在第三种可行的实现方式中,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
结合第五个方面的第三种可行的实现方式,在第四种可行的实现方式中,还包括:
当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;处理器,用于在所述发射器根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
结合第五个方面或第五个方面的上述任意一种可行的实现方式,在第五种可行的实现方式中,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
本发明的第六个方面是提供一种解调参考信号的传输方法,包括:
基站向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
所述基站接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
结合第六个方面,在第一种可行的实现方式中,在所述基站向用户设备UE发送配置指示之前,还包括:
所述基站判断传输时间间隔确定小于或等于时间阈值。
结合第六个方面或第六个方面的第一种可行的实现方式,在第二种可行的实现方式中,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于PUSCH的时隙内。
结合第六个方面的第二种可行的实现方式,在第三种可行的实现方式中,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
结合第六个方面的第三种可行的实现方式,在第四种可行的实现方式中,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
结合第六个方面的第二种可行的实现方式或第六个方面的第三种可行的实现方式或第六个方面的第四种可行的实现方式,在第六种可行的实现方式中,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
结合第六个方面或第六个方面的上述任意一种可行的实现方式,在第六种可行的实现方式中,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
结合第六个方面的第二种可行的实现方式或第六个方面的第三种可行的实现方式或第六个方面的第四种可行的实现方式或第六个方面的第五种可行的实现方式,在第七种可行的实现方式中,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位 置。
结合第六个方面或第六个方面的上述任意一种可行的实现方式,在第八种可行的实现方式中,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
本发明的第七个方面是提供一种解调参考信号的传输方法,包括:
用户设备UE接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
所述UE根据所述配置指示向所述基站发送所述独立的DMRS;和/或,
所述UE根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
结合第七个方面,在第一种可行的实现方式中,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
结合第七个方面或第七个方面的第一种可行的实现方式,在第二种可行的实现方式中,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
结合第七个方面的第二种可行的实现方式,在第三种可行的实现方式中,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
结合第七个方面的第三种可行的实现方式,在第四种可行的实现方式中,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包 含映射指示;
则在所述UE根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,还包括:
所述UE根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
结合第七个方面或第七个方面的上述任意一种可行的实现方式,在第五种可行的实现方式中,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
本发明实施例提供的解调参考信号的传输装置、系统及方法,通过基站向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;随后,所述基站接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。从而使得基站能够触发UE发送上述DMRS来完成频偏估计,提高了频偏估计的准确性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图做一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,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至图4为现有技术LTE系统的FDD部分物理信道发送示意图;
图5为本发明实施例提供的一种解调参考信号的传输装置的结构示意图;
图6为本发明实施例提供的另一种解调参考信号的传输装置的结构示意图;
图7为本发明实施例提供的另一种解调参考信号的传输装置的结构示意图;
图8为本发明实施例提供的另一种解调参考信号的传输装置的结构示 意图;
图9为本发明实施例提供的另一种通用传输装置的结构示意图;
图10为本发明实施例提供的一种解调参考信号的传输方法的流程示意图;
图11为本发明实施例提供的另一种解调参考信号的传输方法的流程示意图;
图12为所述至少一个DMRS的时域位置示意图;
图13为本发明实施例提供的DMRS图案示意图;
图14为本发明实施例提供的另一种解调参考信号的传输方法的流程示意图;
图15为本发明实施例提供的另一种解调参考信号的传输方法的流程示意图;
图16为基于映射指示进行上行数据替换后的物理信道发送示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
针对上文现有技术的技术问题,本发明实施例提供的解调参考信号的传输装置、系统及方法,通过灵活发送DMRS,从而实现系统在任何场景都能够精确的估算频偏值。下面通过具体实施例对本发明的方案进行说明。
图5为本发明实施例提供的一种解调参考信号的传输装置的结构示意图,该传输装置为基站或演进型基站(evolved Node B,简称:eNB),参照图5,该传输装置,包括:发送模块100、接收模块101;
发送模块100,用于向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
接收模块101,用于接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
本发明实施例提供的解调参考信号的传输装置,通过发送模块向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;随后,所述接收模块接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。从而使得基站能够触发UE发送上述DMRS来完成频偏估计,提高了频偏估计的准确性。
另外,当高铁用户采用现有的LTE技术时,由于现有的LTE系统并没有针对速度达到400KM/小时或500KM/小时左右的高速移动场景进行相应的设计。高速导致多普勒频偏较大,因此采用现有的LTE技术在高速移动场景中进行频偏时,其准确性也会降低。
针对高铁等高速移动的场景,在调度PUSCH前该传输装置触发UE发送一个或多个独立的DMRS,即通过指示UE发送至少一个独立的DMRS,基站接收到至少一个独立的DMRS后,首先进行频偏估计,再调度UE发送PUSCH,此时,基站可以根据提前估计的频偏以及PUSCH中的DMRS联合解调PUSCH。提高了频偏估计的准确性,从而保证了解调PUSCH的准确性。
在图5的基础上,图6为本发明实施例提供的另一种解调参考信号的传输装置的结构示意图,参照图6,该传输装置还包括:处理模块102;
处理模块102,用于在所述发送模块100向用户设备UE发送配置指示之前,判断传输时间间隔确定小于或等于时间阈值。
可选的,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于PUSCH的时隙内。
可选的,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
进一步的,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一 个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
可选的,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
可选的,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
可选的,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
可选的,所述配置指示为PDCCH的DCI指示;或者,MAC CE指示;或者,RRC信令指示。
图7为本发明实施例提供的另一种解调参考信号的传输装置的结构示意图,该传输装置为UE,具体可以为:智能手机、平板电脑等,参照图7,该传输装置,包括:发送模块200、接收模块201;
接收模块201,用于接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
发送模块200,用于:根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
本发明实施例提供的解调参考信号的传输装置,通过接收模块接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;再通过发送模块根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。实现了由 基站触发UE发送上述DMRS来完成频偏估计,提高了频偏估计的准确性。
另外,当高铁用户采用现有的LTE技术时,由于现有的LTE系统并没有针对速度达到400KM/小时或500KM/小时左右的高速移动场景进行相应的设计。高速导致多普勒频偏较大,因此采用现有的LTE技术在高速移动场景中进行频偏时,其准确性也会降低,
针对高铁等高速移动的场景,图7所示的方案,在调度PUSCH前基站触发UE发送一个或多个独立的DMRS,即通过基站接收UE发送的至少一个独立的DMRS后,首先进行频偏估计,再调度UE发送PUSCH,此时,基站可以根据提前估计的频偏以及PUSCH中的DMRS联合解调PUSCH。提高了频偏估计的准确性,从而保证了解调PUSCH的准确性。
进一步的,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于PUSCH的时隙内。
可选的,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
进一步的,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
进一步的,在图7的基础上,图8为本发明实施例提供的另一种解调参考信号的传输装置的结构示意图,参照图8,该传输装置:还包括:还包括:处理模块202;
当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示。
此时,处理模块202,用于在所述发送模块200根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,根据所述含映射指示 将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
可选的,所述配置指示为PDCCH的DCI指示;或者,MAC CE指示;或者,RRC信令指示。
图9为本发明实施例提供的另一种通用传输装置的结构示意图,参照图9,该通用传输装置,包括:发射器300、接收器301、处理器302;
当上述基站或eNB采用图5或图6所示的装置时,发射器300能够上述发送模块100的相应功能、接收器301能够上述接收模块101的相应功能、处理器302能够上述处理模块102的相应功能,从而实现图5或图6对应实施例的技术效果。
当上述UE采用图7或图8所示的装置时,发射器300能够上述发送模块200的相应功能、接收器301能够上述接收模块201的相应功能、处理器302能够上述处理模块202的相应功能,从而实现图7或图8对应实施例的技术效果。
并且,本发明实施例还提供一种解调参考信号的传输系统,其可以包含至少一个上述基站或eNB,以及至少一个上述UE,其中基站或eNB采用图5或图6或图9所示的装置;UE采用图7或图8或图9所示的装置。
图10为本发明实施例提供的一种解调参考信号的传输方法的流程示意图,该方法执行主体为基站,当然还可以为:演进型基站(evolved Node B,简称:eNB),该基站或eNB可以采用图5或图6或图9所示的结构,执行对应的功能,参照图10,该方法包括如下步骤:
步骤100、基站向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
其中,需要说明的是,独立的DMRS指不需要依赖上行数据,由UE独立发送的DMRS。
步骤101、所述基站接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
本发明实施例提供的解调参考信号的传输方法,通过基站向用户设 备UE发送配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;随后,所述基站接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。从而使得基站能够触发UE发送上述DMRS来完成频偏估计,提高了频偏估计的准确性。
另外,当高铁用户采用现有的LTE技术时,由于现有的LTE系统并没有针对速度达到400KM/小时或500KM/小时左右的高速移动场景进行相应的设计。高速导致多普勒频偏较大,因此采用现有的LTE技术在高速移动场景中进行频偏时,其准确性也会降低。
针对高铁等高速移动的场景,图10所示的方案,在调度PUSCH前基站触发UE发送一个或多个独立的DMRS,即通过指示UE发送至少一个独立的DMRS,基站接收到至少一个独立的DMRS后,首先进行频偏估计,再调度UE发送PUSCH,此时,基站可以根据提前估计的频偏以及PUSCH中的DMRS联合解调PUSCH。提高了频偏估计的准确性,从而保证了解调PUSCH的准确性。
进一步的,当采用长度为0.5ms或更短的TTI来进行发送时,参照图4可知,现有技术中的PUSCH缩短为1个时隙。(而目前一个PUSCH通常为两个时隙)并且保持PUSCH的原时隙结构不变。从而导致一个时隙中仅剩下一个符号的DMRS。而在进行频偏估计时,至少需要两个符号的DMRS,来保证频偏估计的准确性。因此,对于这种场景既可以采用图5所示的机制有基站触发UE发送独立的DMRS;和/或,发送DMRS和上行数据的组合。以便保证频偏估计的准确性。为了能够判断何时触发图10所示的方案,优选的,在图10的基础上,图11为本发明实施例提供的另一种解调参考信号的传输方法的流程示意图,在步骤100之前,还可以包括:
步骤102、所述基站判断传输时间间隔确定小于或等于时间阈值。
其中,传输时间间隔可以为上述TTI;时间阈值对于上述的场景可以为小于或等于0.5ms的值,当然,对于其他类似的场景,可以根据系统的需求,对传输时间间隔和时间阈值进行设置,本发明不予限定。
进一步的,对于DMRS依赖上行数据发送的情况,此时,所述配置 指示所述UE发送DMRS和上行数据的组合;其中,DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于PUSCH的时隙内。
其中,一个DMRS的概念可以指占用一个时频资源位置的DMRS符号;一个上行数据指占用一个时频资源位置的上行数据。
可选的,所述配置指示还可以用于指示所述独立的DMRS所处的位置,以及所述DMRS和上行数据的组合的所处的位置;具体的,一种可行的实现方式为:
所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
进一步的,对于所述独立的DMRS的发送位置信息,其可以具有以下几种情况:
情况一:所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;
情况二:所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
对于所述DMRS和上行数据的组合的发送位置信息,其可以具有以下几种情况:
情况一:所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;
情况二:所述DMRS和上行数据的组合的发送位置信息用于指示至少一个DMRS的时域位置位于PUSCH的时隙之后;
情况三:所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
对于所述DMRS和上行数据的组合的发送位置信息,以情况二为例,图12为所述至少一个DMRS的时域位置示意图,参照图12,右侧的时隙中为1个时隙的上行数据和一个DMRS,在此基础上根据上述配置指示,增加了一个DMRS,该配置指示同时指示该DMRS的时域位置位于PUSCH的时隙之后。
进一步的,在发送所述DMRS和上行数据的组合时,基站会对其中 的DMRS的码进行循环移位。现有技术中,对于DMRS的码进行循环移位时,只使用12个循环值中的8个,其余4个循环值并未使用。
因此,本发明实施例的中增加的所述至少一个DMRS可以利用上述4个未被使用的循环值。当然也可以采用之前已经使用过的8个循环值。此处不予限定。
可选的,对于所述独立的DMRS,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。对于所述DMRS和上行数据的组合;当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
可选的,所述独立的DMRS所处的时隙或者所述DMRS和上行数据的组合所处的时隙也可以用于传输上行数据,图13为本发明实施例提供的DMRS图案示意图,参照图13,一种可行的实现方式为:DMRS在一个PRB中并不是占用PRB的所有12个子载波,而是只占用6个子载波,并且每个数据间隔一个子载波。从而使得剩余的PRB可以用于传输上行数据。
对于上述所述DMRS和上行数据的组合的发送位置信息的情况三,一种可行的实现方式为:所述配置指示还包含映射指示;
所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
具体的,只需UE在发送的上行数据中将一部分上行数据的时频资源位置让给所述至少一个DMRS进行发送。而该部分上行数据可以映射到其他视频资源位置上,或者直接丢弃这部分上行数据直接将时频资源位置让给所述至少一个DMRS进行发送。
优选的,上述实施例以及各个可行的实现方式中,所述配置指示为PDCCH的DCI指示;或者,MAC CE指示;或者,RRC信令指示。
图14为本发明实施例提供的另一种解调参考信号的传输方法的流程示意图,该方法执行主体为UE,具体可以为:智能手机、平板电脑等,该UE可以采用图7或图8或图9所示的结构,实现对应的功能;参照图 14,该方法包括如下步骤:
步骤200、用户设备UE接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
步骤201、所述UE根据所述配置指示向所述基站发送所述独立的DMRS;和/或,所述UE根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
本发明实施例提供的解调参考信号的传输方法,通过用户设备UE接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;再通过该UE根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。实现了由基站触发UE发送上述DMRS来完成频偏估计,提高了频偏估计的准确性。
另外,当高铁用户采用现有的LTE技术时,由于现有的LTE系统并没有针对速度达到400KM/小时或500KM/小时左右的高速移动场景进行相应的设计。高速导致多普勒频偏较大,因此采用现有的LTE技术在高速移动场景中进行频偏时,其准确性也会降低,
针对高铁等高速移动的场景,图14所示的方案,在调度PUSCH前基站触发UE发送一个或多个独立的DMRS,即通过基站接收UE发送的至少一个独立的DMRS后,首先进行频偏估计,再调度UE发送PUSCH,此时,基站可以根据提前估计的频偏以及PUSCH中的DMRS联合解调PUSCH。提高了频偏估计的准确性,从而保证了解调PUSCH的准确性。
进一步的,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于PUSCH的时隙内。
其中,一个DMRS的概念可以指占用一个时频资源位置的DMRS符号;一个上行数据指占用一个时频资源位置的上行数据。
可选的,所述配置指示还可以用于指示所述独立的DMRS所处的位置,以及所述DMRS和上行数据的组合的所处的位置;具体的,一种可行的实现方式为:
所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所 述DMRS和上行数据的组合的发送位置信息。
进一步的,对于所述独立的DMRS的发送位置信息,其可以具有以下几种情况:
情况一:所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;
情况二:所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
对于所述DMRS和上行数据的组合的发送位置信息,其可以具有以下几种情况:
情况一:所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;
情况二:所述DMRS和上行数据的组合的发送位置信息用于指示至少一个DMRS的时域位置位于PUSCH的时隙之后;
情况三:所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
可选的,对于所述独立的DMRS,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。对于所述DMRS和上行数据的组合;当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
可选的,所述独立的DMRS所处的时隙或者所述DMRS和上行数据的组合所处的时隙也可以用于传输上行数据,具体可以参照上文图8。
对于上述所述DMRS和上行数据的组合的发送位置信息的情况三,一种可行的实现方式为:所述配置指示还包含映射指示;
所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
进一步的,在图14的基础上,图15为本发明实施例提供的另一种解调参考信号的传输方法的流程示意图,参照图15,在步骤201之前,还包括:
步骤202、所述UE根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
图16为基于映射指示进行上行数据替换后的物理信道发送示意图,参照图16,其中,所述至少一个DMRS并没有对外扩展,只在发送的上行数据的时隙中,将其中至少一个上行数据的时频资源位置让给至少一个DMRS进行发送。这些被替换的上行数据可以通过打孔打掉,也可以将上行数据映射到其他时频资源位置上。参照图16,其中,PUSCH的一个时隙内,包含一个添加的DMRS、上行数据以及该PUSCH内原有的DMRS。
可选的,所述配置指示为PDCCH的DCI指示;或者,MAC CE指示;或者,RRC信令指示。
本领域普通技术人员可以理解:实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存储介质中,该程序在执行时,执行包括上述方法实施例的步骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (46)

  1. 一种解调参考信号的传输装置,其特征在于,包括:
    发送模块,用于向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
    接收模块,用于接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
  2. 根据权利要求1所述的装置,其特征在于,还包括:
    处理模块,用于在所述发送模块向用户设备UE发送配置指示之前,判断传输时间间隔确定小于或等于时间阈值。
  3. 根据权利要求1或2所述的装置,其特征在于,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
  4. 根据权利要求3所述的装置,其特征在于,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
  5. 根据权利要求4所述的装置,其特征在于,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
    所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
  6. 根据权利要求3-5任意一项所述的装置,其特征在于,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
  7. 根据权利要求1-6任意一项所述的装置,其特征在于,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
  8. 根据权利要求3-6任意一项所述的装置,其特征在于,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
    所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
  9. 根据权利要求1-8任意一项所述的装置,其特征在于,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
  10. 一种解调参考信号的传输装置,其特征在于,包括:
    接收模块,用于接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
    发送模块,用于:根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
  11. 根据权利要求10所述的装置,其特征在于,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
  12. 根据权利要求10或11所述的装置,其特征在于,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
  13. 根据权利要求12所述的装置,其特征在于,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
    所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
  14. 根据权利要求13所述的装置,其特征在于,还包括:
    当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;处理模块,用于在所述发送模块根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
  15. 根据权利要求10-14任意一项所述的装置,其特征在于,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
  16. 一种解调参考信号的传输系统,其特征在于,包括:至少一个权利要求1-9任意一项所述的解调参考信号的传输装置和至少一个权利要求10-15任意一项所述的解调参考信号的传输装置。
  17. 一种解调参考信号的传输装置,其特征在于,包括:
    发射器,用于向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
    接收器,用于接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
  18. 根据权利要求17所述的装置,其特征在于,还包括:
    处理器,用于在所述发射器向用户设备UE发送配置指示之前,判断传输时间间隔确定小于或等于时间阈值。
  19. 根据权利要求17或18所述的装置,其特征在于,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
  20. 根据权利要求19所述的装置,其特征在于,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
  21. 根据权利要求20所述的装置,其特征在于,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时 隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
    所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
  22. 根据权利要求19-21任意一项所述的装置,其特征在于,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
  23. 根据权利要求17-22任意一项所述的装置,其特征在于,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
  24. 根据权利要求19-22任意一项所述的装置,其特征在于,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
    所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
  25. 根据权利要求17-24任意一项所述的装置,其特征在于,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
  26. 一种解调参考信号的传输装置,其特征在于,包括:
    接收器,用于接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
    发射器,用于:根据所述配置指示向所述基站发送所述独立的DMRS;和/或,根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
  27. 根据权利要求26所述的装置,其特征在于,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少 一个上行数据位于物理上行共享信道PUSCH的时隙内。
  28. 根据权利要求26或27所述的装置,其特征在于,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
  29. 根据权利要求28所述的装置,其特征在于,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
    所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
  30. 根据权利要求29所述的装置,其特征在于,还包括:
    当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;处理器,用于在所述发射器根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
  31. 根据权利要求26-30任意一项所述的装置,其特征在于,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
  32. 一种解调参考信号的传输方法,其特征在于,包括:
    基站向用户设备UE发送配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
    所述基站接收所述UE发送的所述独立的DMRS;和/或,接收所述UE发送的所述DMRS和上行数据的组合。
  33. 根据权利要求32所述的方法,其特征在于,在所述基站向用户设备UE发送配置指示之前,还包括:
    所述基站判断传输时间间隔确定小于或等于时间阈值。
  34. 根据权利要求32或33所述的方法,其特征在于,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于PUSCH的时隙内。
  35. 根据权利要求34所述的方法,其特征在于,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
  36. 根据权利要求35所述的方法,其特征在于,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
    所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
  37. 根据权利要求34-36任意一项所述的方法,其特征在于,当所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,所述至少一个DMRS的时域位置位于PUSCH的时隙之后时,则所述至少一个DMRS所处的时隙仅用于传输所述至少一个DMRS。
  38. 根据权利要求32-37任意一项所述的方法,其特征在于,所述独立的DMRS所处的时隙仅用于传输所述独立的DMRS。
  39. 根据权利要求34-37任意一项所述的方法,其特征在于,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
    所述映射指示用于指示所述UE将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
  40. 根据权利要求32-39任意一项所述的方法,其特征在于,所述配置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
  41. 一种解调参考信号的传输方法,其特征在于,包括:
    用户设备UE接收基站发送的配置指示,所述配置指示用于指示所述UE发送独立的解调参考信号DMRS;和/或,指示所述UE发送DMRS和上行数据的组合;
    所述UE根据所述配置指示向所述基站发送所述独立的DMRS;和/或,
    所述UE根据所述配置指示向所述基站发送所述DMRS和上行数据的组合。
  42. 根据权利要求41所述的方法,其特征在于,所述DMRS和上行数据的组合包含至少一个DMRS和至少一个上行数据;其中,所述至少一个上行数据位于物理上行共享信道PUSCH的时隙内。
  43. 根据权利要求41或42所述的方法,其特征在于,所述配置指示还包括所述独立的DMRS的发送位置信息;和/或,所述DMRS和上行数据的组合的发送位置信息。
  44. 根据权利要求43所述的方法,其特征在于,所述独立的DMRS的发送位置信息用于指示所述独立的DMRS的时域位置位于PUSCH的时隙之前;或者,指示所述独立的DMRS的时域位置位于PUSCH的时隙之后;
    所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之前;或者,指示至少一个DMRS的时域位置位于PUSCH的时隙之后;或者,指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内。
  45. 根据权利要求44所述的方法,其特征在于,当所述DMRS和上行数据的组合的发送位置信息用于指示所述至少一个DMRS的时域位置位于PUSCH的时隙之内时,所述配置指示还包含映射指示;
    则在所述UE根据所述配置指示向所述基站发送所述DMRS和上行数据的组合之前,还包括:
    所述UE根据所述含映射指示将所述至少一个上行数据替换为所述至少一个DMRS,并将所述至少一个上行数据映射到其他频时资源位置。
  46. 根据权利要求41-45任意一项所述的方法,其特征在于,所述配 置指示为PDCCH的下行控制信息DCI指示;或者,媒体接入控制的控制元MAC CE指示;或者,无线资源控制RRC信令指示。
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