WO2017024582A1 - 上行参考信号传输方法、用户终端及基站 - Google Patents

上行参考信号传输方法、用户终端及基站 Download PDF

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Publication number
WO2017024582A1
WO2017024582A1 PCT/CN2015/086842 CN2015086842W WO2017024582A1 WO 2017024582 A1 WO2017024582 A1 WO 2017024582A1 CN 2015086842 W CN2015086842 W CN 2015086842W WO 2017024582 A1 WO2017024582 A1 WO 2017024582A1
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WIPO (PCT)
Prior art keywords
reference signal
uplink reference
user terminal
time unit
location information
Prior art date
Application number
PCT/CN2015/086842
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English (en)
French (fr)
Inventor
邵家枫
马莎
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.)
Filing date
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 EP15900780.6A priority Critical patent/EP3324694B1/en
Priority to PCT/CN2015/086842 priority patent/WO2017024582A1/zh
Priority to JP2018507523A priority patent/JP6607625B2/ja
Priority to CN202110576930.1A priority patent/CN113411172A/zh
Priority to EP23219758.2A priority patent/EP4362378A2/en
Priority to CN201580071533.1A priority patent/CN107113808B/zh
Publication of WO2017024582A1 publication Critical patent/WO2017024582A1/zh
Priority to US15/894,070 priority patent/US10735159B2/en
Priority to US16/918,190 priority patent/US20200336266A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to an uplink reference signal transmission method, a user terminal, and a base station.
  • LTE Long Term Evolution
  • the user terminal may send an uplink reference signal to the base station within a Transmission Time Interval (TTI).
  • TTI Transmission Time Interval
  • the base station may perform channel sounding, channel estimation, and frequency offset estimation on the user terminal according to the uplink reference signal sent by the user terminal, thereby scheduling the user terminal according to the result of the channel sounding, or estimating according to the frequency offset.
  • the result is that the frequency of the uplink data of the user terminal is calibrated, and then the data sent by the user terminal is received according to the calibrated frequency and the channel estimation result.
  • the current TTI of the LTE system is 1 ms. In order to achieve shorter round trip times and shorter data transmission delays, the TTI can be reduced.
  • the user terminal needs to send sufficient uplink reference signal to the base station, that is, in the TTI.
  • the user terminal needs to have sufficient resources to transmit an uplink reference signal.
  • the TTI is reduced, ensuring that the user terminal sends enough uplink reference signals will reduce the capacity of the user terminal to transmit data in the TTI, reduce the efficiency of data transmission, and reduce the uplink capacity of the system.
  • the embodiment of the invention provides an uplink reference signal transmission method, a user terminal and a base station, so as to solve the problem that the number of user terminals supported by the base station is limited and the capacity of the communication system is limited.
  • an embodiment of the present invention provides an uplink reference signal transmission method, including:
  • the user terminal determines, according to the first high layer signaling, the uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit;
  • the first control information includes: indication information of an uplink reference signal symbol group corresponding to the user terminal;
  • the user terminal sends an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes a plurality of time units, at least two of the plurality of time units have at least The time interval of a time unit.
  • the time unit is a time unit outside a preset time unit; the preset time unit is a transmission of 1 ms.
  • the time unit of the uplink reference signal corresponding to the time interval TTI.
  • the time unit includes a time unit in a preset time interval; and the preset time interval includes a protection time.
  • the uplink reference signal position further includes: at least one uplink reference signal subcarrier group; Each uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the method further includes:
  • the second high layer signaling or the first control information further includes: indication information of an uplink reference signal subcarrier group corresponding to the user terminal;
  • the sending, by the user terminal, the uplink reference signal on the time unit of the uplink reference signal symbol group corresponding to the user terminal includes:
  • the user terminal is in the time domain of an uplink reference signal symbol group corresponding to the user terminal. a time unit, and the uplink reference signal is sent on a subcarrier of an uplink signal subcarrier group corresponding to the user terminal in the frequency domain.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve uplink subcarriers.
  • the determining, by the user terminal, the uplink reference signal location according to the first high layer signaling includes:
  • the user terminal determines, according to the first high layer signaling, uplink reference signal location information, where the uplink reference signal location information includes: frequency domain location information;
  • the user terminal determines the uplink reference signal position according to the frequency domain location information in a preset time slot or a subframe.
  • determining, by the user equipment, the uplink reference signal location according to the first high layer signaling includes:
  • the user terminal determines the uplink reference signal location information according to the first high layer signaling, where the uplink reference signal location information includes: time domain location information and frequency domain location information;
  • the user terminal determines the uplink reference signal location according to the frequency domain location information and the time domain location information.
  • the method further includes:
  • the user equipment Determining, by the user equipment, the at least one codeword sequence corresponding to the user terminal according to the third higher layer signaling or the second control information of the received physical channel; the third higher layer signaling or the second control information Including indication information of a codeword sequence corresponding to the user terminal;
  • the user terminal sends an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal, including:
  • the user terminal sends the uplink reference signal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time unit corresponding to a single carrier frequency division multiple access SC-FDMA symbol, or a time unit corresponding to an orthogonal frequency division multiplexing multiple access OFDMA symbol.
  • the uplink reference signal includes: a demodulation reference signal DM-RS and/or a sounding reference signal SRS.
  • the embodiment of the present invention further provides an uplink reference signal transmission method, including:
  • the base station Transmitting, by the base station, first high layer signaling to the user equipment; the first high layer signaling is used to enable the user terminal to determine an uplink reference signal position; and the uplink reference signal position includes at least one uplink reference signal symbol group, where each The uplink reference signal symbol group includes at least one time unit;
  • the base station sends the second high layer signaling to the user terminal or sends the first control information through the physical channel;
  • the second high layer signaling or the first control information includes: an uplink reference signal symbol corresponding to the user terminal
  • the indication information of the group is used to indicate that the user terminal determines an uplink reference signal symbol group corresponding to the user terminal at the uplink reference signal position;
  • the base station receives an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, at least two of the plurality of time units exist at least between The time interval of a symbol.
  • the time unit is a time unit outside a preset time unit; the preset time unit is 1 ms.
  • the time unit is a time unit in a preset time interval; the preset time interval includes a protection time GP.
  • the uplink reference signal position includes: at least one uplink reference signal subcarrier group; Each uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the second high layer signaling or the first control information further includes: indication information of an uplink reference signal subcarrier group corresponding to the user terminal; and an uplink reference signal subcarrier corresponding to the user terminal
  • the indication information of the group is used to indicate that the user terminal determines an uplink reference signal subcarrier group corresponding to the user terminal at the uplink reference signal position;
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the first high layer signaling includes uplink reference signal location information, where the uplink The reference signal location information includes: frequency domain location information;
  • the frequency domain location information is used to enable the user terminal to determine the uplink reference signal location in a preset time slot or a subframe.
  • the first high layer signaling includes uplink reference signal location information, where the uplink The reference signal location information includes: time domain location information and frequency domain location information;
  • the time domain location information and the frequency domain location information are used to enable the user terminal to determine the uplink reference signal location.
  • the method further includes:
  • the base station sends the uplink reference signal location information to other base stations by using an X2 interface, where the uplink reference signal location information is used to make the uplink reference signal location of the other base station different from the uplink reference signal location of the base station. .
  • the base station receives an uplink reference signal corresponding to the user terminal in the user terminal Before the uplink reference signal sent on the time unit of the symbol group, the method further includes:
  • the base station sends the third high layer signaling to the user terminal, or sends the second control information to the user terminal through the physical channel;
  • the third high layer signaling or the second control information includes: The indication information of the codeword sequence corresponding to the user terminal; the indication information of the codeword sequence corresponding to the user terminal is used to instruct the user terminal to determine at least one codeword sequence corresponding to the user terminal;
  • an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal including:
  • the base station Receiving, by the base station, the uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal by using at least one codeword sequence corresponding to the user terminal.
  • the time unit is a time unit corresponding to a single carrier frequency division multiple access SC-FDMA symbol Or, a time unit corresponding to the orthogonal frequency division multiplexing multiple access OFDMA symbol.
  • the uplink reference signal comprises: a demodulation reference signal DM-RS and/or detection Reference signal SRS.
  • the embodiment of the present invention further provides a user terminal, including:
  • a determining module configured to determine, according to the first high layer signaling, an uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit, according to the second High-level signaling or first control information of the received physical channel, determining an uplink reference signal symbol group corresponding to the user terminal at the uplink reference signal position; the second high-level signaling or the first control
  • the information includes: indication information of an uplink reference signal symbol group corresponding to the user terminal;
  • a sending module configured to send an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, at least two of the plurality of time units exist at least between The time interval of a time unit.
  • the time unit is a time unit outside a preset time unit; the preset time unit is 1 ms.
  • the time unit includes a time unit in a preset time interval; and the preset time interval includes a protection time.
  • the uplink reference signal position further includes: at least one uplink reference signal subcarrier group; Each uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the determining module is further configured to determine, according to the second high layer signaling or the first control information, an uplink reference signal symbol group and the user terminal corresponding to the user terminal at the uplink reference signal position Corresponding one uplink reference signal subcarrier group; the second high layer signaling or the first control information further includes: indication information of the uplink reference signal subcarrier group corresponding to the user terminal;
  • the sending module is further configured to send, in a time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send a frequency domain to a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal is further configured to send, in a time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send a frequency domain to a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal is further configured to send, in a time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send a frequency domain to a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve uplink subcarriers.
  • the determining module is further configured to determine an uplink reference according to the first high layer signaling
  • the signal location information, the uplink reference signal location information includes frequency domain location information, and the uplink reference signal location is determined according to the frequency domain location information in a preset time slot or a subframe.
  • the determining module is further configured to determine an uplink reference according to the first high layer signaling Signal position information, the uplink reference signal position information includes time domain location information and frequency domain location information, and the uplink reference signal location is determined according to the frequency domain location information and the time domain location information.
  • the determining module is further configured to perform, according to the third higher layer signaling or the received physical And determining, by the second control information of the channel, the at least one codeword sequence corresponding to the user terminal; the third higher layer signaling or the second control information includes indication information of a codeword sequence corresponding to the user terminal;
  • the sending module is further configured to send the uplink reference signal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time unit corresponding to a single carrier frequency division multiple access SC-FDMA symbol Or, a time unit corresponding to the orthogonal frequency division multiplexing multiple access OFDMA symbol.
  • the uplink reference signal includes: a demodulation reference signal DM-RS and/or a sounding reference Signal SRS.
  • an embodiment of the present invention further provides a base station, including:
  • a sending module configured to send the first high layer signaling to the user terminal, send the second high layer signaling to the user terminal, or send the first control information by using a physical channel, where the first high layer signaling is used to enable the
  • the user terminal determines an uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, each uplink reference signal symbol group includes at least one time unit; the second high layer signaling or the first control information And the indication information of the uplink reference signal symbol group corresponding to the user terminal; the indication information of the uplink reference signal symbol group corresponding to the user terminal is used to indicate that the user terminal determines the location on the uplink reference signal position An uplink reference signal symbol group corresponding to the user terminal;
  • the receiving module is further configured to receive an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, at least two of the plurality of time units exist at least between the two time units The time interval of a symbol.
  • the time unit is a time unit outside a preset time unit; the preset time unit is 1 ms.
  • the time unit is a time unit in a preset time interval; the preset time interval includes a protection time GP.
  • the uplink reference signal location includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the second high layer signaling or the first control information further includes: indication information of an uplink reference signal subcarrier group corresponding to the user terminal; and indication information of an uplink reference signal subcarrier group corresponding to the user terminal, Instructing the user terminal to determine an uplink reference signal subcarrier group corresponding to the user terminal at the uplink reference signal position;
  • the receiving module is further configured to receive, by the user terminal, a time unit of an uplink reference signal symbol group corresponding to the user terminal in a time domain, and the frequency domain is an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal transmitted on the subcarriers.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the first high layer signaling includes uplink reference signal location information, where the uplink The reference signal location information includes: frequency domain location information;
  • the frequency domain location information is used to enable the user terminal to determine the uplink reference signal location in a preset time slot or a subframe.
  • the first high layer signaling includes uplink reference signal location information, where the uplink The reference signal location information includes: time domain location information and frequency domain location information;
  • the time domain location information and the frequency domain location information are used to enable the user terminal to determine the uplink reference signal location.
  • the sending module is further configured to send the uplink reference signal location information to another base station by using an X2 interface;
  • the uplink reference signal location information is used to make an uplink reference signal location of the other base station different from the uplink reference signal location of the base station.
  • the sending module is further configured to send the third high layer signaling to the user terminal. Or transmitting the second control information to the user terminal by using the physical channel; the third high layer signaling or the second control information includes: indication information of a codeword sequence corresponding to the user terminal; the user terminal The indication information of the corresponding codeword sequence is used to instruct the user terminal to determine the use At least one codeword sequence corresponding to the terminal;
  • the receiving module is further configured to receive the uplink reference signal that is sent by the user terminal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time unit corresponding to a single carrier frequency division multiple access SC-FDMA symbol Or, a time unit corresponding to the orthogonal frequency division multiplexing multiple access OFDMA symbol.
  • the uplink reference signal includes: a demodulation reference signal DM-RS and/or detection Reference signal SRS.
  • an embodiment of the present invention further provides a user terminal, including: a processor and a transmitter;
  • the processor is configured to determine an uplink reference signal position according to the first high layer signaling, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit Determining, according to the second high-level signaling or the first control information of the received physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second high-level signaling or The first control information includes: indication information of an uplink reference signal symbol group corresponding to the user terminal;
  • the transmitter is configured to send an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, at least two of the plurality of time units exist at least between the two time units The time interval of a time unit.
  • the time unit is a time unit outside a preset time unit; the preset time unit is 1 ms.
  • the time unit includes a time unit in a preset time interval; the preset time interval includes a protection time .
  • the uplink reference signal location further includes: at least one uplink reference signal Number subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the processor is further configured to determine, according to the second high layer signaling or the first control information, an uplink reference signal symbol group and the user terminal corresponding to the user terminal at the uplink reference signal position Corresponding one uplink reference signal subcarrier group; the second high layer signaling or the first control information further includes: indication information of the uplink reference signal subcarrier group corresponding to the user terminal;
  • the transmitter is further configured to send, in a time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send a frequency domain to a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal is further configured to send, in a time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send a frequency domain to a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve uplink subcarriers.
  • the processor is further configured to determine, according to the first high layer signaling, Uplink reference signal location information; wherein the uplink reference signal location information includes frequency domain location information; and in a preset time slot or subframe, determining the uplink reference signal location according to the frequency domain location information.
  • the processor is further configured to determine, according to the first high layer signaling, Uplink reference signal location information; wherein the uplink reference signal location information includes: time domain location information and frequency domain location information; and determining the uplink reference signal location according to the frequency domain location information and the time domain location information.
  • the processor is further configured to use the third higher layer signaling or received Determining, by the second control information of the physical channel, the at least one codeword sequence corresponding to the user terminal; the third higher layer signaling or the second control information includes indication information of a codeword sequence corresponding to the user terminal;
  • the transmitter is further configured to send the uplink reference signal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time corresponding to a single carrier frequency division multiple access SC-FDMA symbol A unit, or a time unit corresponding to an orthogonal frequency division multiplexing multiple access OFDMA symbol.
  • the uplink reference signal comprises: a demodulation reference signal DM-RS and/or detection Reference signal SRS.
  • an embodiment of the present invention provides a base station, including: a transmitter and a receiver;
  • the transmitter is configured to send first high layer signaling to the user terminal, send second high layer signaling to the user terminal, or send first control information by using a physical channel;
  • the first high layer signaling is used to enable Determining, by the user terminal, an uplink reference signal location; the uplink reference signal location comprising at least one uplink reference signal symbol group, wherein each uplink reference signal symbol group includes at least one time unit; the second higher layer signaling or the
  • the first control information includes: indication information of an uplink reference signal symbol group corresponding to the user terminal; and indication information of an uplink reference signal symbol group corresponding to the user terminal, where the user terminal is used to indicate the location of the uplink reference signal Determining an uplink reference signal symbol group corresponding to the user terminal;
  • the receiver is further configured to receive an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, at least two of the plurality of time units have at least The time interval of a symbol.
  • the time unit is a time unit outside a preset time unit; and the preset time unit is 1 ms.
  • the time unit is a time unit in a preset time interval; the preset time interval includes a protection time GP.
  • the uplink reference signal position includes: at least one uplink reference signal subcarrier group;
  • the uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the second high layer signaling or the first control information further includes: The indication information of the row reference signal subcarrier group; the indication information of the uplink reference signal subcarrier group corresponding to the user terminal is used to indicate that the user terminal determines an uplink corresponding to the user terminal at the uplink reference signal location Reference signal subcarrier group;
  • the receiver is further configured to receive a time unit of the uplink reference signal symbol group corresponding to the user terminal in the time domain, and the frequency domain is an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal transmitted on the subcarriers.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the first high layer signaling includes uplink reference signal location information, where the uplink The reference signal location information includes: frequency domain location information;
  • the frequency domain location information is used to enable the user terminal to determine the uplink reference signal location in a preset time slot or a subframe.
  • the first high layer signaling includes uplink reference signal location information, where the uplink The reference signal location information includes: time domain location information and frequency domain location information;
  • the time domain location information and the frequency domain location information are used to enable the user terminal to determine the uplink reference signal location.
  • the transmitter is further configured to send the uplink reference signal location information to another base station by using an X2 interface;
  • the uplink reference signal location information is used to make an uplink reference signal location of the other base station different from the uplink reference signal location of the base station.
  • the transmitter is further configured to send the third high layer signaling to the user terminal.
  • the third high layer signaling or the second control information includes: indication information of a codeword sequence corresponding to the user terminal; the user terminal The indication information of the corresponding codeword sequence is used to instruct the user terminal to determine at least one codeword sequence corresponding to the user terminal;
  • the receiver is further configured to receive, by using the user terminal, at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the uplink reference signal sent.
  • the time unit is a time unit corresponding to a single carrier frequency division multiple access SC-FDMA symbol Or, a time unit corresponding to the orthogonal frequency division multiplexing multiple access OFDMA symbol.
  • the uplink reference signal comprises: a demodulation reference signal DM-RS and/or detection Reference signal SRS.
  • the user terminal may determine the uplink reference signal position according to the first high layer signaling, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each The uplink reference signal symbol group includes at least one time unit, and the user terminal is located at the uplink reference signal position according to the second high layer signaling or the indication information of the uplink reference signal symbol group corresponding to the user terminal included in the first control information. Determining an uplink reference signal symbol group corresponding to the user terminal, and then transmitting an uplink reference signal on an uplink reference signal symbol group corresponding to the user terminal.
  • each user terminal may send an uplink reference signal on an uplink reference signal symbol group corresponding to each user terminal at the uplink reference signal position. Even if the TTI is reduced, in order to ensure that each user terminal sends enough uplink reference signals, the number of time units in an uplink reference signal symbol group corresponding to the user terminal at the position of the uplink reference signal may be increased, and/or the user The number of subcarriers of the time unit in the uplink reference signal symbol group corresponding to the terminal does not need to increase the time unit corresponding to the uplink reference signal in each TTI, thereby ensuring the data transmission rate and ensuring the uplink capacity of the system.
  • FIG. 1 is a schematic diagram of a radio frame structure in a TDD communication system
  • FIG. 2 is a schematic diagram of a radio frame structure in an FDD communication system
  • FIG. 3 is a flowchart of an uplink reference signal transmission method according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural diagram of an uplink reference signal position in one time slot according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of an uplink reference signal position in one subframe according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed in one subframe according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed in another subframe according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed on a time slot according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed on another time slot according to Embodiment 2 of the present invention.
  • FIG. 10 is a schematic structural diagram of an uplink reference signal position in one time slot according to Embodiment 2 of the present invention.
  • FIG. 11 is a flowchart of an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • FIG. 12 is a flowchart of a method for determining an uplink reference signal position in an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • FIG. 13 is a flowchart of another method for determining an uplink reference signal position in an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • FIG. 14 is a flowchart of an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • FIG. 15 is a flowchart of an uplink reference signal transmission method according to Embodiment 3 of the present invention.
  • FIG. 17 is a schematic structural diagram of a user terminal according to Embodiment 5 of the present invention.
  • FIG. 18 is a schematic structural diagram of a base station according to Embodiment 6 of the present invention.
  • FIG. 19 is a schematic structural diagram of a user terminal according to Embodiment 7 of the present invention.
  • FIG. 20 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention.
  • FIG. 21 is a schematic structural diagram of a network system according to Embodiment 9 of the present invention.
  • the solution of the embodiments of the present invention can be applied to an LTE communication system or an LTE implementation communication system, such as a Long Term Evolution-Advanced (LTE-A) communication system.
  • LTE communication system or the LTE-A communication system includes a Time Division Duplexing (TDD) communication system and a Frequency Division Duplexing (FDD) communication system.
  • TDD Time Division Duplexing
  • FDD Frequency Division Duplexing
  • one radio frame may include 10 subframes of subframe #0 to subframe #9, wherein each subframe includes two slots of 0.5 ms.
  • the 10 subframes may include an uplink subframe, a downlink subframe, and a special subframe.
  • the uplink subframe, the downlink subframe, and the specific subframe corresponding to the special subframe may be determined according to the uplink and downlink configuration information, and the correspondence table between the uplink and downlink configuration information and the subframe number.
  • the correspondence between the uplink and downlink configuration and the subframe number in the TDD communication system can be as shown in Table 1 below.
  • D is a downlink subframe
  • S is a special subframe
  • U is an uplink subframe
  • the special subframes in the TDD communication system include: Downlink Pilot Time Slot (DwPTS), Guard Period (GP), and Uplink Pilot (Uplink Pilot).
  • DwPTS Downlink Pilot Time Slot
  • GP Guard Period
  • UpPTS Uplink Pilot
  • the length of time corresponding to DwPTS, GP, and UpPTS in the special subframe may be determined according to Table 2 below.
  • the total time of the special subframe is 30720 Ts, and the time of the GP in the special subframe can be determined by combining the times of the DwPTS and the UpPTS in the special subframe in Table 2.
  • one radio frame may include 20 slots of slot #0 to slot #19, and the 20 slots may be divided into 10 subframes, and each subframe includes two subframes. 0.5 ms time slots.
  • transmission resources are divided into time and frequency.
  • the largest time unit is a 10 ms radio frame, which is divided into 10 1 ms subframes, each of which is divided into two 0.5 ms slots.
  • NCP Normal Cyclic Prefix
  • ECP Extended Cyclic Prefix
  • a slot consists of 6 time units.
  • every 12 subcarriers form a 180 kHz Resource Element (RE).
  • RE Resource Element
  • the smallest unit of time-frequency resources is RE, which is a two-dimensional resource consisting of one subcarrier on frequency and one time unit duration in time.
  • 1 resource block (RB) is time A resource block of 12 subcarriers in a slot frequency domain on the domain.
  • one RB contains 84 REs
  • one RB contains 72 REs.
  • the TTI may be one subframe, one time slot, or even one time unit. If the TTI is one subframe, the TTI is 1 ms. If the TTI is a time slot, the TTI may be 0.5 ms.
  • the TTI may be a time unit duration, where the time unit may be an OFDM system OFDM orthogonal frequency division multiplexing multiple access with 15 kHz subcarrier spacing (Freq user terminal ncy Division Multiple Access, Asymptotically referred to as OFDMA) symbol or single carrier frequency division multiple access (Single Carrier Freq User Terminal ncy Division Multiple Access, abbreviated as SC-FDMA) symbol, or a symbol of a communication system with a larger subcarrier spacing.
  • OFDMA OFDM orthogonal frequency division multiplexing multiple access with 15 kHz subcarrier spacing
  • SC-FDMA single carrier frequency division multiple access
  • the TTI of each embodiment of the present invention may further include multiple time units and less than one time slot.
  • Embodiment 1 of the present invention provides an uplink reference signal transmission method.
  • the user terminal may send the uplink reference signal of the user terminal to the base station by performing the uplink reference signal transmission method in the first embodiment, and after receiving the uplink reference signal sent by the user terminal, the base station performs the uplink reference signal according to the uplink reference signal to the user terminal.
  • Channel sounding or channel estimation, frequency offset estimation thereby scheduling the user terminal according to the result of the channel sounding, or calibrating the frequency of the uplink data of the user terminal according to the result of the frequency offset estimation, and then according to the The calibrated frequency and the channel estimation result receive data transmitted by the user terminal.
  • FIG. 3 is a flowchart of an uplink reference signal transmission method according to Embodiment 1 of the present invention. As shown in FIG. 3, the uplink reference signal transmission method may include:
  • the user equipment determines, according to the first high layer signaling, an uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit.
  • the user terminal may be, for example, a user equipment (User Equipment, UE for short), a mobile station (Mmobile Station, MS for short), a mobile terminal, or the like.
  • the mobile terminal can be, for example, a mobile phone, a notebook computer, a tablet computer, or the like.
  • the first higher layer signaling may be any higher layer signaling received by the user terminal.
  • the first high layer signaling may be Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, or other signaling.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the base station can be a base station of a cell in which the user terminal is located.
  • the uplink reference signal location may include an uplink reference signal location of a plurality of user terminals within a cell of the base station. That is, in the method of the first embodiment of the present invention, a plurality of user terminals in a cell of the base station transmit an uplink reference signal on an uplink reference signal symbol group corresponding to each user terminal at
  • the uplink reference signal location includes at least one uplink reference signal symbol group, wherein each uplink reference signal symbol group includes at least one time unit.
  • Each of the plurality of user terminals may correspond to one of the uplink reference signal symbol positions in the uplink reference signal position.
  • the uplink reference signal symbol groups corresponding to different user terminals of the plurality of user terminals may be the same or different. If the uplink reference signal symbol groups corresponding to the different user terminals are the same, that is, the time domain positions of the uplink reference signals of the different user terminals are the same, the frequency domain positions of the uplink reference signals of the different user terminals are different, and/or The codeword sequence of the uplink reference signal of the different user terminals is different.
  • the uplink reference signal symbol groups of the different user terminals are different, that is, the time domain positions of the uplink reference signals of the different user terminals are the same, the frequency domain positions of the uplink reference signals of the different user terminals may be the same or different.
  • the codeword sequence of the uplink reference signal of the different user terminals may be the same or different.
  • the time unit in the at least one uplink reference signal symbol group included in the uplink reference signal position may include one subframe or a time unit in one slot.
  • the user terminal determines, according to the second high-layer signaling or the first control information of the received physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second high-level signaling or
  • the first control information includes: indication information of an uplink reference signal symbol group corresponding to the user terminal.
  • the second higher layer signaling may also be any higher layer signaling received by the user terminal.
  • the second higher layer signaling may be the same as or different from the first higher layer signaling.
  • the physical channel may be a downlink physical channel, such as a Physical Downlink Control Channel (PDCCH), or an Enhanced Physical Downlink Control Channel (EPDCCH).
  • PDCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • the user terminal may be the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, because the uplink reference signal includes an uplink reference signal location of the multiple user terminals. Determining, from the uplink reference signal locations of the multiple user terminals, an uplink reference signal symbol group corresponding to the user terminal.
  • the indication information of the uplink reference signal symbol group corresponding to the user terminal may include: an uplink reference signal symbol group corresponding to the user terminal And an identifier of the time unit in the uplink reference signal symbol group corresponding to the user terminal.
  • the user terminal sends an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the user terminal may send the uplink reference signal on at least one time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the user terminal may also send uplink data at a time-frequency location outside the location of the uplink reference signal.
  • the user terminal may determine an uplink reference signal position according to the first high layer signaling, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal The symbol group includes at least one time unit, and the user terminal determines the user terminal at the uplink reference signal position according to the second high layer signaling or the indication information of the uplink reference signal symbol group corresponding to the user terminal included in the first control information. Corresponding one uplink reference signal symbol group, and then transmitting an uplink reference signal on an uplink reference signal symbol group corresponding to the user terminal. That is, each user terminal may send an uplink reference signal on an uplink reference signal symbol group corresponding to each user terminal at the uplink reference signal position.
  • the user terminal sends the uplink signal on the uplink reference signal symbol group corresponding to the user terminal in the uplink reference signal position, so the user terminal sends the uplink data and the uplink reference signal to send on different time-frequency resources, even if the TTI decreases. It is still possible to transmit enough uplink reference signals at the uplink reference signal position without increasing the time unit corresponding to the uplink reference signal transmitted in the TTI, thereby ensuring the data transmission rate and ensuring the uplink capacity of the system.
  • Embodiment 2 of the present invention further provides an uplink reference signal transmission method.
  • each of the uplink reference signal symbol groups includes multiple time units, there is a time interval of at least one time unit between every two of the plurality of time units.
  • each of the uplink reference signal symbol groups includes multiple time units
  • the one uplink reference signal symbol group corresponding to the user terminal includes multiple time units.
  • the user terminal sends the uplink reference signal in multiple time units with a time interval of at least one time unit between every two time units, so that the result of performing frequency offset estimation by the base station after receiving the uplink reference signal is more accurate.
  • the uplink reference signal position includes a time unit of an uplink reference signal symbol group designed on one time slot
  • the time unit in the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time slot.
  • the time unit on.
  • a time slot can include 7 symbols, each symbol being equivalent to one time unit.
  • FIG. 4 is a schematic structural diagram of an uplink reference signal position in one time slot according to Embodiment 2 of the present invention. As shown in FIG.
  • the uplink reference signal position may include three uplink reference signal symbol groups in one time slot, where the first uplink reference signal symbol group includes time units corresponding to two symbols #0 and #3, The second uplink reference signal symbol group includes time units corresponding to two symbols #1 and #4, and the third uplink reference signal symbol group includes time units corresponding to two symbols #2 and #5.
  • the number of symbols corresponding to the time unit in each group of uplink reference symbol groups in the uplink reference signal position may be different, that is, the time unit corresponding to the six symbols in one slot may be further divided into other numbers.
  • Upstream reference signal symbol group. That is, the uplink reference signal position may include other number of uplink reference signal symbol groups in the one time slot. The other number can be greater than 3 and less than 6.
  • the user terminal may be, according to the second high layer signaling or the first control information, the indication information of the uplink reference signal symbol group corresponding to the user terminal, from multiple in the uplink reference symbol group in the one time slot.
  • One of the uplink reference signal symbol groups is selected as the uplink reference signal symbol group corresponding to the user terminal.
  • FIG. 4 is only an example of the uplink reference signal position in one time slot, and the time unit of each uplink reference signal symbol group in the at least one uplink reference signal symbol group included in the uplink reference signal position may also be used. For other distributions, we will not repeat them here.
  • the uplink reference signal position includes a time unit of the uplink reference signal symbol group designed on one subframe, and the time unit in the at least one uplink reference signal symbol group included in the uplink reference signal position may be one subframe.
  • Time unit In the case of a normal cyclic prefix, one subframe may include 14 symbols, each symbol being equivalent to one time unit.
  • FIG. 5 is a schematic structural diagram of an uplink reference signal position in one subframe according to Embodiment 2 of the present invention. As shown in FIG.
  • the uplink reference signal position may include 7 uplink reference signal symbol groups, where the first uplink reference signal symbol group includes time units corresponding to two symbols #0 and #7, The second uplink reference signal symbol group includes time units corresponding to two symbols #1 and #8, the third uplink reference signal symbol group includes time units corresponding to two symbols #2 and #9, and the fourth uplink reference signal symbol group includes #3 ⁇ #10
  • the time unit corresponding to the two symbols, the fifth uplink reference signal symbol group includes time units corresponding to two symbols #4 and #11, and the sixth uplink reference signal symbol group includes two symbols #5 and #12
  • the seventh uplink reference signal symbol group includes time units corresponding to two symbols #6 and #13.
  • the number of symbols corresponding to the time unit in each group of uplink reference symbol groups in the uplink reference signal position may be different, that is, the 14 symbols in one subframe may be further divided into other ones.
  • the number of upstream reference signal symbol groups. That is, in the one subframe, the uplink reference signal position may include other numbers of uplink reference signal symbol groups. The other number can be greater than 7 and less than 14.
  • the user terminal may be, according to the second high layer signaling or the first control information, the indication information of the uplink reference signal symbol group corresponding to the user terminal, from multiple in the uplink reference symbol group in the one time slot.
  • One of the uplink reference signal symbol groups is selected as the uplink reference signal symbol group corresponding to the user terminal. It should be noted that FIG.
  • the uplink reference signal position is in one subframe
  • the time unit of each uplink reference signal symbol group in the at least one uplink reference signal symbol group included in the uplink reference signal position may also be used. For other distributions, we will not repeat them here.
  • the time unit is a time unit outside the preset time unit; the preset time unit is a time unit of the uplink reference signal corresponding to the 1 ms TTI.
  • the uplink reference signal symbol group may be The time unit is a time unit other than the time unit of the uplink reference signal corresponding to the TTI of 1 ms, and the time unit of the uplink reference signal sent by the user terminal, that is, the user terminal determines that the user terminal corresponds to the uplink reference signal position.
  • the time unit of the uplink reference signal symbol group is different from the time unit of the old version of the 1 ms old user terminal transmitting the uplink reference signal.
  • the uplink reference signal position includes a time unit of the uplink reference signal symbol group designed on one subframe, and the time unit in the at least one uplink reference signal symbol group included in the uplink reference signal position may be one subframe.
  • one subframe includes two slots, wherein each slot includes 7 symbols, that is, one subframe may include 14 uplink symbols, each symbol being equivalent to one time unit.
  • FIG. 6 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed in one subframe according to Embodiment 2 of the present invention. As shown in FIG. 6, the subframe may include: 14 symbols of #0 to #13.
  • the Sounding Reference Signal (SRS) in the uplink reference signal corresponding to the 1ms TTI of the local cell or the neighboring cell may appear on the #13 symbol, and the DeModulation Reference Signal (DeModulation Reference Signal) in the uplink reference signal DM-RS) appears on the #3, #10 symbols. Therefore, in the case of a normal cyclic prefix, in order to avoid mutual interference between the uplink reference signal transmitted by the user terminal and the uplink reference signal sent by the user terminal of the old version of the 1ms TTI of the local cell or the neighboring cell, the 1 ms TTI can be avoided.
  • each uplink reference of the uplink reference signal position The time unit in the signal symbol group may be a time unit corresponding to other symbols than the three symbols #3, #10, and #13. That is, the time unit in each of the uplink reference signal symbol groups may include #0, #1, #2, #4, #5, #6, #7, #8, #9, #11, #12 A time unit corresponding to at least one symbol in the symbol; if the SRS of the 1 ms TTI is to be avoided, the time unit in each of the uplink reference signal symbol groups may be a time unit corresponding to a symbol other than the #13 symbol.
  • the time unit in each of the uplink reference signal symbol groups may include #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10 a time unit corresponding to at least one of the #11 and #12 symbols; if only to avoid the DMRS of the 1 ms TTI, the time unit in each of the uplink reference signal symbol groups may be outside the #3, #10 symbols
  • the time unit corresponding to the other symbols, that is, the time unit in each of the uplink reference signal symbol groups may include #0, #1, #2, #4, #5, #6, #7, #8, A time unit corresponding to at least one of the #9, #11, #12, and #13 symbols.
  • one subframe includes two slots, wherein each slot includes 6 symbols, and one subframe may include 12 uplink symbols, each symbol being equivalent to one time unit.
  • FIG. 7 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed in another subframe according to Embodiment 2 of the present invention. As shown in FIG. 7, the subframe may include: 12 symbols of #0 to #11 symbols.
  • the SRS in the uplink reference signal corresponding to the old user terminal of the 1 ms TTI of the local cell or the neighboring cell may appear on the #11 symbol, and the DM-RS in the uplink reference signal appears on the #2 and #8 symbols.
  • the 1 ms TTI can be avoided.
  • the time unit in each uplink reference signal symbol group of the uplink reference signal position may be other symbols than the three symbols #2, #8, and #11. That is, the time unit in each of the uplink reference signal symbol groups may include at least one of the #0, #1, #3, #4, #5, #6, #7, #9, #10 symbols.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to other symbols than the #11 symbol. That is, the time unit in each of the uplink reference signal symbol groups may include #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10 a time unit corresponding to at least one symbol in the symbol; if only to avoid the DMRS of the 1 ms TTI, the time unit in each of the uplink reference signal symbol groups may be the time corresponding to the symbols other than the #2 and #8 symbols
  • the unit, that is, the time unit in each of the uplink reference signal symbol groups may include #0, #1, #3, #4, #5, #6, #7, #9, #10, #11 symbols middle A time unit corresponding to at least one symbol.
  • the time unit in the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time slot.
  • one slot in the case of a normal cyclic prefix, one slot includes 7 symbols, and each symbol is equivalent to one time unit.
  • FIG. 8 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed on a time slot according to Embodiment 2 of the present invention. As shown in FIG. 8, the time slot includes seven symbols of #0 to #6.
  • the DM-RS in the uplink reference signal corresponding to the 1ms TTI of the local cell or the neighboring cell appears in the #3 symbol, and the SRS in the uplink reference signal may appear in the #6 symbol. Therefore, in the case of a normal cyclic prefix, in order to avoid mutual interference between the uplink reference signal transmitted by the user terminal and the uplink reference signal sent by the user terminal of the old version of the 1ms TTI of the local cell or the neighboring cell, the 1 ms TTI can be avoided.
  • the time unit in each uplink reference signal symbol group of the uplink reference signal position may be a time unit corresponding to other symbols than the #3 and #6 symbols.
  • the time unit in each of the uplink reference signal symbol groups may include a time unit corresponding to at least one of the #0, #1, #2, #4, and #5 symbols; if only to avoid the 1 ms TTI
  • the SRS the time unit in each of the uplink reference signal symbol groups may be a time unit corresponding to other symbols than the #6 symbol, that is, the time unit in each of the uplink reference signal symbol groups may include # a time unit corresponding to at least one of the 0, #1, #2, #3, #4, #5 symbols; if only to avoid the DMRS of the 1 ms TTI, the time unit in each of the uplink reference signal symbol groups
  • the time unit corresponding to the other symbols other than the #3 symbol that is, the time unit in each of the uplink reference signal symbol groups may include #0, #1, #2, #4, #5, #6 A time unit corresponding to at least one symbol in the symbol.
  • FIG. 9 is a schematic structural diagram of a time unit of an uplink reference signal symbol group designed on another time slot according to Embodiment 2 of the present invention.
  • the time slot may include: 6 symbols of #0 to #5.
  • the DM-RS in the uplink reference signal corresponding to the 1ms TTI of the local cell or the neighboring cell appears in the #2 symbol in the corresponding uplink reference signal, and the SRS in the uplink reference signal may appear in the #5 symbol.
  • the 1 ms TTI can be avoided.
  • the time unit in each uplink reference signal symbol group of the uplink reference signal position may be a time unit corresponding to other symbols than the two symbols #2 and #5.
  • the time unit in each of the uplink reference signal symbol groups may include a time unit corresponding to at least one of #0, #1, #2, and #4; if only to avoid the SRS of 1 ms TTI, The time unit in each of the uplink reference signal symbol groups may be a time unit corresponding to other symbols than the #5 symbol, that is, the time unit in each of the uplink reference signal symbol groups may include #0, #1.
  • the time unit in each of the uplink reference signal symbol groups may be other than the #2 symbol
  • the time unit corresponding to the other symbols, that is, the time unit in each of the uplink reference signal symbol groups may include a time unit corresponding to at least one of the #0, #1, #3, #4, #5 symbols.
  • the time unit in the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time slot.
  • the one time slot may include 7 uplink symbols, each symbol corresponding to one time unit.
  • FIG. 10 is a schematic structural diagram of an uplink reference signal position in one time slot according to Embodiment 2 of the present invention.
  • the uplink reference signal position may include time units corresponding to four symbols #1, #2, #4, and #5.
  • the four symbols may be divided into two uplink reference signal symbol groups, where one uplink reference signal symbol group in the two uplink reference signal symbol groups may include time units corresponding to two symbols #1 and #4, and another An uplink reference signal symbol group may include time units corresponding to two symbols #2 and #5.
  • FIG. 10 is only an example of the uplink reference signal position in one time slot, and one uplink reference signal symbol group in the two uplink reference signal symbol groups may also include two symbols #1 and #5.
  • the two uplink reference signal symbol groups may include time units corresponding to the two symbols #2 and #4.
  • the four SC-FDMA symbols can be divided into four uplink reference signal symbol groups.
  • the user terminal may select one of the two or four uplink reference signal symbol groups according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information. As an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit may also be a time unit in a preset time interval; the preset time interval includes a GP.
  • the preset time interval actually includes an idle time unit available for uplink in the GP.
  • the time unit structure of the uplink reference signal symbol group is designed on the GP in the TDD communication system, in the case of the normal cyclic prefix, when the special subframe configuration is 1, the GP may include 8 symbols, and each symbol is equivalent to A unit of time.
  • each uplink reference signal symbol group of the uplink reference signal position may include a #4 to #7 symbol corresponding time unit, that is, the user terminal may correspond to at least one symbol included in the uplink reference signal symbol group corresponding to the user terminal in the #4 to #7 symbol corresponding time unit.
  • the uplink reference signal is transmitted on the time unit. Therefore, the uplink reference signal position may include time units corresponding to the four symbols #4, #5, #6, and #7.
  • the time unit corresponding to the four symbols may be divided into two uplink reference signal symbol groups, where one uplink reference signal symbol group in the two uplink reference signal symbol groups may include two symbols corresponding to #4 and #6. a time unit, another uplink reference signal symbol group may include a time unit corresponding to two symbols #5 and #7; one of the two uplink reference signal symbol groups may also include two #4 and #7.
  • the time unit corresponding to the symbol, the two uplink reference signal symbol groups may include time units corresponding to the two symbols #5 and #6.
  • the time unit corresponding to the four symbols may be divided into four uplink reference signal symbol groups.
  • the user terminal may select one of the two or four uplink reference signal symbol groups according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information. As an uplink reference signal symbol group corresponding to the user terminal.
  • the uplink reference signal location further includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers.
  • the codeword sequence corresponding to the uplink reference signal may include a Zadoff-Chu (ZC) sequence. Since the length of the ZC sequence is at least 12 codewords, the uplink reference signal subcarrier group includes at least ten. Two uplink subcarriers are provided such that each user terminal has sufficient subcarriers to transmit a sufficient number of ZC sequence codewords.
  • ZC Zadoff-Chu
  • each of the plurality of user terminals may correspond to one of the uplink reference signal subcarrier groups in the uplink reference signal position, that is, different user terminals of the plurality of user terminals.
  • the uplink reference signal may be frequency-divided according to the uplink reference signal sub-carrier group corresponding to the user terminal, and may also be used by the uplink reference signal code corresponding to the user terminal, based on the time-division of the uplink reference signal symbol group corresponding to the user terminal. Words are coded. Therefore, in the case that the time domain resources are fixed, the solution of the embodiment of the present invention may also perform frequency division on the uplink reference signals corresponding to different user terminals.
  • the solution of the embodiment of the present invention may perform the code division of the uplink reference signal on the basis of performing the time domain frequency domain on the uplink reference signal corresponding to the different user terminals,
  • the number of user terminals supported by the base station can be increased, thereby increasing the system capacity.
  • FIG. 11 is a flowchart of an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • the sending, by the user terminal, the uplink reference signal in a time unit of an uplink reference signal symbol group corresponding to the user terminal in S303 of the first embodiment may include:
  • the user terminal determines, according to the second higher layer signaling or the first control information, an uplink reference signal symbol group corresponding to the user terminal and an uplink reference signal subcarrier corresponding to the user terminal at the uplink reference signal position.
  • the second high layer signaling or the first control information further includes: indication information of the uplink reference signal subcarrier group corresponding to the user terminal.
  • the user terminal may be at least one uplink reference from the uplink reference signal position according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information. Determining, in the signal symbol group, an uplink reference signal symbol group corresponding to the user terminal, and determining, according to the indication information of the uplink reference signal subcarrier group corresponding to the user terminal, the user terminal corresponding to the at least one uplink reference signal subcarrier group Uplink reference signal subcarrier group.
  • the sending by the user terminal, the uplink reference signal on the time unit of the uplink reference signal symbol group corresponding to the user terminal in S303,
  • the user terminal is a time unit of an uplink reference signal symbol group corresponding to the user terminal in the time domain, and the uplink reference signal is sent on a subcarrier of an uplink signal subcarrier group corresponding to the user terminal in the frequency domain.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the user terminal has at least ten frequency intervals of at least one uplink subcarrier between every two uplink subcarriers.
  • Two uplink subcarriers transmit the uplink reference signal, so that different uses
  • the user terminal may be sent at the subcarrier position of the dressing, so that the subcarriers in the uplink reference signal subcarrier group corresponding to different user terminals are more discrete, so that the base station can use the uplink reference signal to perform a wider frequency domain channel on the limited subcarriers. probe.
  • FIG. 12 is a flowchart of a method for determining an uplink reference signal position in an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • determining, by the user equipment in the foregoing S301, that the uplink reference signal location is based on the first high layer signaling may include:
  • the user terminal determines uplink reference signal location information according to the first high layer signaling, where the uplink reference signal location information includes: frequency domain location information.
  • the frequency domain location information may include: a physical resource block (PRB) index, a resource block group (RBG) index, and a virtual resource block (VRB) index.
  • PRB physical resource block
  • RBG resource block group
  • VRB virtual resource block
  • PRB and VRB are different resource allocation units.
  • the PRB includes 12 consecutive subcarriers in the frequency domain and resources of one time slot in the time domain.
  • the definition of VRB is the same as that of PRB in centralized resource allocation.
  • VRB has a certain correspondence with PRB.
  • the PRB index is the index of the PRB.
  • the VRB index is an index of the VRB, and therefore, the PRB index and the VRB index may be different.
  • the RBG may include multiple PRBs, that is, the number of PRBs included in the RBG may be determined according to the bandwidth of the user terminal or configured by the base station.
  • the PRB index may be the number of the PRB
  • the RBG index may be the number of the RBG
  • the VRB index may be the number of the VRB
  • the subcarrier index may be the number of the subcarrier
  • the subcarrier group index may be the number of the subcarrier group.
  • the subcarrier group may include at least one subcarrier.
  • the user terminal determines the uplink reference signal position according to the frequency domain location information in a preset time slot or a preset subframe.
  • the frequency domain resource corresponding to the frequency domain location information is in a carrier bandwidth of the base station. That is, in the embodiment of the present invention, the time domain of at least one uplink reference signal symbol group in the uplink reference signal position may be a preset time slot or a preset subframe, and the frequency domain is indicated by the frequency domain location information. s position.
  • FIG. 13 is a flowchart of another method for determining an uplink reference signal position in an uplink reference signal transmission method according to Embodiment 2 of the present invention.
  • determining, by the user equipment in the foregoing S301, the uplink reference signal location according to the first high layer signaling may include:
  • the user terminal determines uplink reference signal location information according to the first high layer signaling, where the uplink reference signal location information includes: time domain location information and frequency domain location information.
  • the time domain location information may include: a symbol index, a symbol group index, a slot index, or a subframe index.
  • the symbol may be an OFDMA symbol or an SC-FDMA symbol of an LTE communication system of 15 kHz subcarrier spacing, or a symbol of a communication system of a larger subcarrier spacing.
  • the time slot may be a time slot of a kHz communication system with a 15 kHz subcarrier spacing of 0.5 ms, or a time slot of a communication system with a larger subcarrier spacing, such as a communication system of a 60 kHz subcarrier interval. A time slot of 0.125 ms.
  • the subframe may be a 1 ms subframe of the LTE system with a 15 kHz subcarrier spacing, or a subframe of a communication system with a larger subcarrier spacing, such as a subframe with a time length of 0.25 ms for the communication system of the 60 kHz subcarrier spacing.
  • the user terminal determines the uplink reference signal location according to the frequency domain location information and the time domain location information.
  • the time domain of the at least one uplink reference signal symbol group in the uplink reference signal position may be a time domain location indicated by the time domain location information
  • the frequency domain may be a frequency domain location indicated by the frequency domain location information.
  • the second embodiment of the present invention further provides a method for determining an uplink reference signal.
  • FIG. 14 is a flowchart of an uplink reference signal transmission method according to Embodiment 2 of the present invention. As shown in FIG. 14 , the method may further include: before the sending, by the user terminal, the uplink reference signal on the time unit of the uplink reference signal symbol group corresponding to the user terminal, in the S303 of the first embodiment, the method may further include:
  • the user terminal determines, according to the third high layer signaling or the second control information of the received physical channel, the at least one codeword sequence corresponding to the user terminal; the third higher layer signaling or the second control information includes the The indication information of the codeword sequence corresponding to the user terminal.
  • the user terminal sends the uplink reference signal on the time unit of the uplink reference signal symbol group corresponding to the user terminal in the S303, which may include:
  • the user terminal sends the uplink reference signal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the at least one codeword sequence corresponding to the user terminal may include a pseudo random sequence or an orthogonal sequence, such as a ZC sequence.
  • the user terminal may send the uplink reference signal by using at least one codeword sequence corresponding to the user terminal.
  • the time unit may be a time unit corresponding to the SC-FDMA symbol, or a time unit corresponding to the OFDMA symbol.
  • the uplink reference signals in the embodiments of the present invention may include: DMRS and/or SRS.
  • Each of the uplink reference signal transmission methods provided by the second embodiment of the present invention may cause each user terminal to be in the plurality of time units by setting a time interval between each of the plurality of time units in each of the uplink reference signal symbol groups.
  • the uplink reference signal sent by the non-contiguous time unit in the time unit thereby ensuring that the base station performs frequency offset estimation on the user terminal more accurately.
  • the time unit is a time unit other than the preset time unit, and the uplink reference signal sent by the user terminal and the old user terminal of the 1 ms TTI of the local cell or the neighboring cell can be avoided. Mutual interference between transmitted upstream reference signals.
  • the time unit may also be a time unit in at least one time interval in the GP, so that the time unit of the special subframe is fully utilized, the time unit of the uplink reference signal in the uplink subframe is reduced, and the uplink data transmission is ensured, and the uplink data is transmitted. Data transfer rate.
  • Embodiment 3 of the present invention further provides an uplink reference signal transmission method.
  • FIG. 15 is a flowchart of an uplink reference signal transmission method according to Embodiment 3 of the present invention. As shown in FIG. 15, the method may include:
  • the base station sends, to the user equipment, the first high layer signaling, where the first high layer signaling is used to determine the uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink The reference signal symbol group includes at least one time unit.
  • the base station sends the second high-level signaling to the user terminal, or sends the first control information by using a physical channel.
  • the second high-level signaling or the first control information includes: an uplink reference signal symbol group corresponding to the user terminal.
  • the indication information, the indication information of the uplink reference signal symbol group corresponding to the user terminal, is used to indicate that the user terminal determines an uplink reference signal symbol group corresponding to the user terminal at the uplink reference signal position.
  • the base station receives an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, there is a time interval of at least one symbol between each of the plurality of time units.
  • the time unit is a time unit outside the preset time unit; the preset time unit is a time unit of the uplink reference signal corresponding to the TTI of 1 ms.
  • the time unit is a time unit in a preset time interval; the preset time interval includes a GP.
  • the uplink reference signal location includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers;
  • the second high layer signaling or the first control information further includes: indication information of the uplink reference signal subcarrier group corresponding to the user terminal; indication information of the uplink reference signal subcarrier group corresponding to the user terminal, used to indicate the user
  • the terminal determines an uplink reference signal subcarrier group corresponding to the user terminal at the uplink reference signal position.
  • the uplink reference signal sent by the base station to the time unit of the uplink reference signal symbol group corresponding to the user terminal in the S1503 may include:
  • a time unit of the uplink reference signal symbol group corresponding to the user terminal in the time domain, and the frequency domain is the uplink reference sent on the subcarrier of an uplink signal subcarrier group corresponding to the user terminal signal.
  • each uplink reference signal subcarrier group includes at least twelve uplink subcarriers
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the first high layer signaling includes uplink reference signal location information, where the uplink reference signal location information includes: frequency domain location information.
  • the frequency domain location information is used to enable the user terminal to determine the uplink reference signal location in a preset time slot or subframe.
  • the first high layer signaling includes uplink reference signal location information, where the uplink reference signal location information includes: time domain location information and frequency domain location information;
  • the time domain location information and the frequency domain location information are used to enable the user terminal to determine the uplink reference signal location.
  • the method further includes:
  • the base station sends the uplink reference signal location information to other base stations through the X2 interface; the uplink reference signal location information is used to make the uplink reference signal location of the other base station different from the uplink reference signal location of the base station.
  • the method before the receiving, by the base station, in the S1503, the uplink reference signal sent by the user terminal on the time unit of the uplink reference signal symbol group corresponding to the user terminal, the method further includes:
  • the base station sends third high layer signaling to the user terminal, or sends the user to the user through the physical channel.
  • the terminal sends the second control information; the third higher layer signaling or the second control information includes: indication information of the codeword sequence corresponding to the user terminal; the indication information of the codeword sequence corresponding to the user terminal is used to indicate the user terminal Determining at least one codeword sequence corresponding to the user terminal.
  • the uplink reference signal sent by the base station to the time unit of the uplink reference signal symbol group corresponding to the user terminal in the S1503, includes:
  • the base station receives the uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal by using at least one codeword sequence corresponding to the user terminal.
  • the time unit is a time unit corresponding to the SC-FDMA symbol, or a time unit corresponding to the OFDMA symbol.
  • the uplink reference signal may include: DMRS, and/or, SRS.
  • the method for transmitting the uplink reference signal according to the third embodiment of the present invention is the corresponding transmission method of the uplink reference signal transmission method according to the first or second embodiment, and the beneficial effects are similar to those of the foregoing embodiment, and details are not described herein again.
  • Embodiment 4 of the present invention further provides an uplink reference signal transmission method. If the cell where the base station is located, the first user terminal and the second user terminal.
  • FIG. 16 is a flowchart of an uplink reference signal transmission method according to Embodiment 4 of the present invention. As shown in FIG. 16, the method may include:
  • the base station sends first uplink reference signal location information to the first user terminal, where the first uplink reference signal location information includes first time domain location information and first frequency domain location information.
  • the base station may send the first uplink reference signal location information to the first user terminal by using high layer signaling.
  • the base station sends second uplink reference signal location information to the second user terminal, where the second uplink reference signal location information includes second time domain location information and second frequency domain location information.
  • the base station may also send the second uplink reference signal location information to the second user terminal by using high layer signaling.
  • the high layer signaling of the first uplink reference signal location information sent by the base station may be the same as or different from the high layer signaling of the second uplink reference signal location information.
  • the base station sends the indication information of the uplink reference signal symbol group corresponding to the first user terminal and the indication information of the uplink reference signal subcarrier group corresponding to the first user terminal to the first user terminal by using the physical channel.
  • the physical channel may be any downlink physical channel such as PDCCH and EPDCCH.
  • the base station sends the indication information of the uplink reference signal symbol group corresponding to the second user terminal and the indication information of the uplink reference signal subcarrier group corresponding to the second user terminal to the second user terminal by using the physical channel.
  • the base station sends the indication information of the uplink reference signal symbol group corresponding to the first user terminal and the physical channel of the indication information of the uplink reference signal subcarrier group corresponding to the first user terminal, and sends an uplink reference signal corresponding to the second user terminal.
  • the physical channel of the physical channel of the indication information of the symbol group and the indication information of the uplink reference signal subcarrier group corresponding to the second user terminal may be the same or different.
  • the base station sends the first uplink reference signal location information and the second uplink reference signal location information to other base stations by using an X2 interface, where the uplink reference signal location information and the second uplink reference signal location information are used to enable uplink of other base stations.
  • the reference signal position is different from the uplink reference signal position information of the base station.
  • the uplink reference signal position of the base station may include the first uplink reference signal position and the second uplink reference signal position.
  • the first user terminal determines, according to the first time domain location information and the first frequency domain location information, a first uplink reference signal location, according to the indication information of the uplink reference signal symbol group corresponding to the first user terminal, and the first The indication information of the uplink reference signal subcarrier group corresponding to the user terminal determines, on the first uplink reference signal position, the uplink reference signal symbol group corresponding to the first user terminal and the uplink reference signal subcarrier group corresponding to the first user terminal.
  • the base station sends indication information of the first codeword sequence to the first user terminal.
  • the base station may send the indication information of the first codeword sequence to the first user terminal by using high layer signaling or a physical channel.
  • the first user terminal determines, according to the indication information of the first codeword sequence, the first codeword sequence corresponding to the first user terminal, and the time domain is the time of the uplink reference signal symbol group corresponding to the first user terminal. And transmitting, by using the first codeword sequence, the uplink reference signal of the first user terminal to the base station by using the first codeword sequence on the subcarriers of the uplink reference signal subcarrier group corresponding to the first user terminal.
  • the second user terminal determines, according to the second time domain location information and the second frequency domain location information, a second uplink reference signal location, according to the indication information of the uplink reference signal symbol group corresponding to the second user terminal, and the second The indication information of the uplink reference signal subcarrier group corresponding to the user terminal determines, on the second uplink reference signal position, the uplink reference signal symbol group corresponding to the second user terminal.
  • the uplink reference signal subcarrier group corresponding to the second user terminal determines, according to the second time domain location information and the second frequency domain location information, a second uplink reference signal location, according to the indication information of the uplink reference signal symbol group corresponding to the second user terminal, and the second The indication information of the uplink reference signal subcarrier group corresponding to the user terminal determines, on the second uplink reference signal position, the uplink reference signal symbol group corresponding to the second user terminal.
  • the uplink reference signal subcarrier group corresponding to the second user terminal determines, according to the second time domain location information and the second frequency domain location information
  • the second uplink reference signal position determined by the second user terminal may be the same as the first uplink reference signal determined by the first user terminal, or may be different; and the second user terminal determines the uplink reference corresponding to the second user terminal.
  • the signal symbol group may be the same as the uplink reference signal symbol group corresponding to the second user terminal determined by the second user terminal, or may be different; the uplink reference signal subcarrier group corresponding to the second user terminal determined by the second user terminal may be the second user terminal.
  • the determined uplink reference signal subcarrier group corresponding to the second user terminal is the same or different;
  • the base station sends indication information of the second codeword sequence to the second user terminal.
  • the base station may send the indication information of the second codeword sequence to the second user terminal by using the high layer signaling or the physical channel.
  • the base station may send the indication information of the first codeword sequence and the indication information of the second codeword sequence by using the same or different high layer signaling, or may send the indication of the first codeword sequence by using the same or different physical channels.
  • Information and indication information of the second codeword sequence may further send indication information of the first codeword sequence by using high layer signaling, and send indication information of the second codeword sequence by using a physical channel.
  • the base station may further send the indication information of the second codeword sequence by using the high layer signaling, and send the indication information of the first codeword sequence through the physical channel.
  • the second user terminal determines, according to the indication information of the second codeword sequence, the second codeword sequence of the second user terminal, and the time zone is a time unit of the uplink reference signal symbol group corresponding to the second user terminal. And transmitting, in the frequency domain, the uplink reference signal of the second user terminal to the base station by using the second codeword sequence on the subcarrier of the uplink reference signal subcarrier group corresponding to the second user terminal.
  • the base station is an uplink reference signal symbol group corresponding to the first user terminal in a time domain
  • the frequency domain is an uplink reference signal subcarrier group corresponding to the first user terminal
  • the first user terminal sends the first codeword sequence by using the first codeword sequence.
  • the uplink reference signal of the first user terminal is a time unit in the time domain of the uplink reference signal symbol group corresponding to the second user terminal
  • the frequency domain is a subcarrier of the uplink reference signal subcarrier group corresponding to the second user terminal.
  • receiving an uplink reference signal of the second user terminal that is sent by the second user terminal by using the second codeword sequence
  • Embodiment 5 of the present invention further provides a user terminal.
  • the user terminal provided in this embodiment may be used to perform the uplink reference signal transmission method according to any one of the foregoing Embodiment 1 or Embodiment 2.
  • FIG. 17 is a schematic structural diagram of a user terminal according to Embodiment 5 of the present invention. As shown in FIG. 17, the user terminal 1700.
  • the method may include: a determining module 1701 and a sending module 1702.
  • a determining module 1701 configured to determine, according to the first high layer signaling, an uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit, according to the second And determining, by the high-level signaling or the first control information of the received physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second high-level signaling or the first control information includes: The indication information of the uplink reference signal symbol group corresponding to the user terminal.
  • the sending module 1702 is configured to send an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, there is a time interval of at least one time unit between every two of the plurality of time units.
  • the time unit is a time unit outside the preset time unit; the preset time unit is a time unit of the uplink reference signal corresponding to the TTI of 1 ms.
  • the time unit includes a time unit in a preset time interval; the preset time interval includes a protection time.
  • the uplink reference signal location further includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers.
  • the determining module 1701 is further configured to determine, according to the second high layer signaling or the first control information, an uplink reference signal symbol group corresponding to the user terminal and an uplink reference signal corresponding to the user terminal at the uplink reference signal position
  • the sub-carrier group; the second high-level signaling or the first control information further includes: indication information of the uplink reference signal sub-carrier group corresponding to the user terminal.
  • the sending module 1702 is further configured to: send, in the time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send the uplink reference in a frequency domain to a subcarrier of an uplink signal subcarrier group corresponding to the user terminal. signal.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve uplink subcarriers.
  • the determining module 1701 is further configured to determine, according to the first high layer signaling, uplink reference signal location information, where the uplink reference signal location information includes frequency domain location information, in a preset time slot or a subframe, according to the frequency The domain location information determines the uplink reference signal location.
  • the determining module 1701 is further configured to determine, according to the first high layer signaling, an uplink reference signal.
  • the location information, the uplink reference signal location information includes time domain location information and frequency domain location information, and the uplink reference signal location is determined according to the frequency domain location information and the time domain location information.
  • the determining module 1701 is further configured to determine, according to the third high layer signaling or the second control information of the received physical channel, the at least one codeword sequence corresponding to the user terminal; the third higher layer signaling or the third The second control information includes indication information of a codeword sequence corresponding to the user terminal;
  • the sending module 1702 is further configured to send the uplink reference signal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time unit corresponding to the SC-FDMA symbol, or a time unit corresponding to the OFDMA symbol.
  • the user terminal provided in the fifth embodiment of the present invention may perform the uplink reference signal transmission method according to any one of the foregoing Embodiment 1 or Embodiment 2.
  • the beneficial effects and implementation process may refer to the description in the foregoing embodiment. This will not be repeated here.
  • Embodiment 6 of the present invention further provides a base station.
  • the base station of the sixth embodiment can perform the method for transmitting the uplink reference signal described in the foregoing embodiment 3.
  • FIG. 18 is a schematic structural diagram of a base station according to Embodiment 6 of the present invention. As shown in FIG. 18, the base station 1800 includes a sending module 1801 and a receiving module 1802.
  • the sending module 1801 is configured to send the first high layer signaling to the user terminal, send the second high layer signaling to the user terminal, or send the first control information by using a physical channel, where the first high layer signaling is used to enable the user terminal Determining an uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, each uplink reference signal symbol group includes at least one time unit; the second high layer signaling or the first control information includes: the user terminal The indication information of the corresponding uplink reference signal symbol group; the indication information of the uplink reference signal symbol group corresponding to the user terminal is used to indicate that the user terminal determines an uplink reference signal symbol group corresponding to the user terminal at the uplink reference signal position .
  • the receiving module 1802 is further configured to receive an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, there is a time interval of at least one symbol between each of the plurality of time units.
  • the time unit is a time unit outside the preset time unit; the preset time unit is a time unit of the uplink reference signal corresponding to the TTI of 1 ms.
  • the time unit is a time unit in a preset time interval; the preset time interval includes a GP.
  • the uplink reference signal location includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers.
  • the second high layer signaling or the first control information further includes: indication information of the uplink reference signal subcarrier group corresponding to the user terminal; indication information of the uplink reference signal subcarrier group corresponding to the user terminal, used to indicate the user
  • the terminal determines an uplink reference signal subcarrier group corresponding to the user terminal at the uplink reference signal position.
  • the receiving module 1802 is further configured to receive a time unit of the uplink reference signal symbol group corresponding to the user terminal in the time domain, and the frequency domain is a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal sent.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the first high layer signaling includes uplink reference signal location information, where the uplink reference signal location information includes: frequency domain location information.
  • the frequency domain location information is used to enable the user terminal to determine the uplink reference signal location in a preset time slot or subframe.
  • the first high layer signaling includes uplink reference signal location information, where the uplink reference signal location information includes: time domain location information and frequency domain location information.
  • the time domain location information and the frequency domain location information are used to enable the user terminal to determine the uplink reference signal location.
  • the sending module 1801 is further configured to send the uplink reference signal location information to other base stations by using an X2 interface, where the uplink reference signal location information is used to enable an uplink reference signal location of the other base station and the uplink reference of the base station.
  • the signal position is different.
  • the sending module 1801 is further configured to send the third high layer signaling to the user terminal, or send the second control information to the user terminal by using a physical channel;
  • the third high layer signaling or the second control information includes The indication information of the codeword sequence corresponding to the user terminal; the indication information of the codeword sequence corresponding to the user terminal is used to indicate that the user terminal determines at least one codeword sequence corresponding to the user terminal.
  • the receiving module 1802 is further configured to receive an uplink parameter corresponding to the user terminal in the user terminal.
  • the uplink reference signal transmitted by using at least one codeword sequence corresponding to the user terminal on the time unit of the signal symbol group.
  • the time unit is a time unit corresponding to the SC-FDMA symbol, or a time unit corresponding to the OFDMA symbol.
  • the base station provided in the sixth embodiment of the present invention can perform the method for transmitting the uplink reference signal according to the foregoing embodiment 3.
  • the beneficial effects and implementation process can be referred to the description in the foregoing embodiment, and details are not described herein again.
  • Embodiment 7 of the embodiment of the present invention further provides a user terminal.
  • FIG. 19 is a schematic structural diagram of a user terminal according to Embodiment 7 of the present invention. As shown in FIG. 19, the user terminal 1900 can include a processor 1901 and a transmitter 1902.
  • the processor 1901 is configured to determine, according to the first high layer signaling, an uplink reference signal position, where the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit; Determining, by the second high-level signaling or the first control information of the received physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second high-level signaling or the first control information is The method includes: indication information of an uplink reference signal symbol group corresponding to the user terminal.
  • the transmitter 1902 is configured to send an uplink reference signal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, there is a time interval of at least one time unit between every two of the plurality of time units.
  • the time unit is a time unit outside the preset time unit; the preset time unit is a time unit of the uplink reference signal corresponding to the TTI of 1 ms.
  • the time unit includes a time unit in a preset time interval; the preset time interval includes a protection time.
  • the uplink reference signal location further includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers.
  • the processor 1901 is further configured to determine, according to the second higher layer signaling or the first control information, an uplink reference signal symbol group corresponding to the user terminal and an uplink reference signal corresponding to the user terminal at the uplink reference signal position.
  • the sub-carrier group; the second high-level signaling or the first control information further includes: indication information of the uplink reference signal sub-carrier group corresponding to the user terminal.
  • the transmitter 1902 is further configured to send, in the time domain, a time unit of an uplink reference signal symbol group corresponding to the user terminal, and send the uplink reference on a subcarrier of an uplink signal subcarrier group corresponding to the user terminal in the frequency domain. signal.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve uplink subcarriers.
  • the processor 1901 is further configured to determine uplink reference signal location information according to the first high layer signaling, where the uplink reference signal location information includes frequency domain location information; in a preset time slot or subframe, The uplink reference signal position is determined according to the frequency domain location information.
  • the processor 1901 is further configured to determine uplink reference signal location information according to the first high layer signaling, where the uplink reference signal location information includes: time domain location information and frequency domain location information; according to the frequency domain The location information and the time domain location information determine the uplink reference signal location.
  • the processor 1901 is further configured to determine, according to the third higher layer signaling or the second control information of the received physical channel, the at least one codeword sequence corresponding to the user terminal; the third higher layer signaling or the third The second control information includes indication information of a codeword sequence corresponding to the user terminal.
  • the transmitter 1902 is further configured to send the uplink reference signal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time unit corresponding to the SC-FDMA symbol, or a time unit corresponding to the OFDMA symbol.
  • the base station provided in Embodiment 7 of the present invention can perform the line reference signal transmission method according to the foregoing Embodiment 1 or Embodiment 2.
  • the beneficial effects and implementation process of the present invention can be referred to the description in the foregoing embodiments, and details are not described herein again.
  • Embodiment 8 of the present invention further provides a base station.
  • FIG. 20 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention. As shown in FIG. 20, the base station 2000 includes a transmitter 2001 and a receiver 2002.
  • the transmitter 2001 is configured to send the first high layer signaling to the user terminal, send the second high layer signaling to the user terminal, or send the first control information by using a physical channel.
  • the first high layer signaling is used to enable the user terminal.
  • Determining an uplink reference signal position; the uplink reference signal position includes at least one uplink reference signal symbol group, wherein each uplink reference signal symbol group includes at least one time unit; the second higher layer signaling or the first control information includes: The indication information of the uplink reference signal symbol group corresponding to the user terminal; the indication information of the uplink reference signal symbol group corresponding to the user terminal is used to indicate that the user terminal determines the corresponding one of the user terminals at the uplink reference signal position Upstream reference signal symbol group.
  • the receiver 2002 is further configured to receive an uplink reference signal sent by the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • each of the uplink reference signal symbol groups includes multiple time units, there is a time interval of at least one symbol between each of the plurality of time units.
  • the time unit is a time unit outside the preset time unit; the preset time unit is a time unit of the uplink reference signal corresponding to the TTI of 1 ms.
  • the time unit is a time unit in a preset time interval; the preset time interval includes a GP.
  • the uplink reference signal location includes: at least one uplink reference signal subcarrier group; wherein each uplink reference signal subcarrier group includes at least twelve uplink subcarriers.
  • the second high layer signaling or the first control information further includes: indication information of the uplink reference signal subcarrier group corresponding to the user terminal; indication information of the uplink reference signal subcarrier group corresponding to the user terminal, used to indicate the user
  • the terminal determines an uplink reference signal subcarrier group corresponding to the user terminal at the uplink reference signal position.
  • the receiver 2002 is further configured to receive a time unit of the uplink reference signal symbol group corresponding to the user terminal in the time domain, and the frequency domain is a subcarrier of an uplink signal subcarrier group corresponding to the user terminal.
  • the uplink reference signal sent.
  • a frequency interval of at least one subcarrier exists between every two subcarriers of the at least twelve subcarriers.
  • the first high layer signaling includes uplink reference signal location information, where the uplink reference signal location information includes: frequency domain location information.
  • the frequency domain location information is used to enable the user terminal to determine the uplink reference signal location in a preset time slot or subframe.
  • the first high layer signaling includes uplink reference signal location information, where the uplink reference signal location information includes: time domain location information and frequency domain location information;
  • the time domain location information and the frequency domain location information are used to enable the user terminal to determine the uplink reference signal location.
  • the transmitter 2001 is further configured to send the uplink reference signal location information to other base stations by using an X2 interface, where the uplink reference signal location information is used to enable an uplink reference signal of the other base station.
  • the location of the number is different from the location of the uplink reference signal of the base station.
  • the transmitter 2001 is further configured to send the third high layer signaling to the user terminal, or send the second control information to the user terminal by using a physical channel; the third higher layer signaling or the second control information includes The indication information of the codeword sequence corresponding to the user terminal; the indication information of the codeword sequence corresponding to the user terminal is used to indicate that the user terminal determines at least one codeword sequence corresponding to the user terminal.
  • the receiver 2002 is further configured to receive the uplink reference signal that is sent by the user terminal by using at least one codeword sequence corresponding to the user terminal on a time unit of an uplink reference signal symbol group corresponding to the user terminal.
  • the time unit is a time unit corresponding to the SC-FDMA symbol, or a time unit corresponding to the OFDMA symbol.
  • the base station provided in Embodiment 8 of the present invention can perform the method for transmitting the uplink reference signal according to the foregoing Embodiment 3.
  • the beneficial effects and implementation process can be referred to the description in the foregoing embodiment, and details are not described herein again.
  • Embodiment 9 of the present invention also provides a network system.
  • FIG. 21 is a schematic structural diagram of a network system according to Embodiment 9 of the present invention.
  • the network system 2100 can include at least one base station 2101 and at least one user terminal 2102 of a cell in which each of the at least one base station is located.
  • Each of the at least one base station 2101 may be the base station according to the sixth embodiment or the eighth embodiment, and may perform the uplink reference signal transmission method provided in the foregoing third embodiment.
  • each base station refer to the foregoing sixth embodiment.
  • the base station of the eighth embodiment is not described here.
  • Each of the at least one user terminal 2102 may be the user terminal according to the fifth embodiment or the seventh embodiment, and may perform the uplink reference signal transmission method according to the first embodiment or the second embodiment, where each user terminal is configured.
  • For a specific structure refer to the base station in the foregoing Embodiment 5 or Embodiment 7, and details are not described herein again.
  • Each of the at least one base station 2101 and the at least one user terminal 2102 of the cell in which the base station is located may perform the uplink reference signal transmission method according to the fourth embodiment. If the network system 2100 includes at least two base stations 2101, each of the at least two base stations 2101 can transmit a message over the X2 interface.
  • the network system provided by the ninth embodiment of the present invention, the base station and the user terminal can perform the uplink reference signal transmission method provided by the foregoing embodiment, and the beneficial effects thereof are similar to those of the foregoing embodiment, and details are not described herein again.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiment; and the foregoing storage medium includes: ROM, RAM A variety of media that can store program code, such as a disk or a disc.

Abstract

本发明实施例提供一种上行参考信号传输方法、用户终端及基站。本发明的上行参考信号传输方法包括确定包括至少一个上行参考信号符号组的上行参考信号位置，每组包括至少一个时间单元；确定用户终端对应的上行参考信号符号组；在用户终端对应的上行参考信号符号组的时间单元发送上行参考信号。本发明实施例可保证系统的上行容量。

Description

上行参考信号传输方法、用户终端及基站 技术领域
本发明实施例涉及通信技术，尤其涉及一种上行参考信号传输方法、用户终端及基站。
背景技术
随着无线通信技术的飞速发展，用户对数据传输速率的需求也越来越高。长期演进(Long Term Evolution，简称LTE)通信技术可通过高速路、低时延和扁平的网络架构，提供一种高速数据网络，以满足用户不断增长的速率传输需求。
在当前LTE系统中，用户终端可在传输时间间隔(Transmission Time Interval，简称TTI)内向基站发送上行参考信号。该基站可根据该用户终端发送的该上行参考信号对该用户终端进行信道探测或信道估计、频偏估计，从而根据该信道探测的结果，对该用户终端进行调度，或者，根据该频偏估计的结果对该用户终端的上行数据的所在频率进行校准，继而根据该校准后的频率和该信道估计结果接收该用户终端发送的数据。当前LTE系统的TTI为1ms。为了实现更短的往返时间和更短的数据传输时延，可减小TTI。若TTI减小，为保证基站对用户终端发送的数据正常接收，和/或，基站对用户终端的正常调度，该用户终端需向该基站发送足够的上行参考信号，也就是说，在TTI内该用户终端需具有足够的资源以发送上行参考信号。
然而，在TTI减小的情况下，保证该用户终端发送足够的上行参考信号，将使得用户终端在TTI内传输数据的容量减小，降低数据传输的效率，降低系统的上行容量。
发明内容
本发明实施例提供一种上行参考信号传输方法、用户终端及基站，以解决基站所支持的用户终端个数有限，通信系统的容量收到限制的问题。
第一方面，本发明实施例提供一种上行参考信号传输方法，包括：
用户终端根据第一高层信令确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；
所述用户终端根据第二高层信令或接收到的物理信道的第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；所述第二高层信令或所述第一控制信息中包括：所述用户终端对应的上行参考信号符号组的指示信息；
所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
根据第一方面，在第一方面的第一种可能实现的方式中，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
根据第一方面或第一方面的第一种可能实现的方式，在第二可能实现的方式中，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
根据第一方面或第一方面的第一种可能实现的方式，在第三可能实现的方式中，所述时间单元包括预设时间间隔中的时间单元；所述预设时间间隔包括保护时间。
根据第一方面至第一方面的第三种可能实现的方式中任意一种，在第四种可能实现的方式中，所述上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号之前，所述方法还包括：
所述用户终端根据所述第二高层信令或所述第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组和所述用户终端对应的一个上行参考信号子载波组；所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；
所述用户终端在所述用户终端对应的上行参考信号符号组的时间单元上发送上行参考信号包括：
所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的 时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送所述上行参考信号。
根据第一方面的第四种可能实现的方式，在第五种可能实现的方式中，所述至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
根据第一方面至第一方面的第五种可能实现的方式中的任意一种在，在第六种可能实现的方式中，所述用户终端根据第一高层信令确定上行参考信号位置包括：
所述用户终端根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
所述用户终端在预设时隙或子帧中，根据所述频域位置信息确定所述上行参考信号位置。
根据第一方面至第一方面的第五种可能实现的方式中任意一种，在第七种可能实现的方式中，所述用户终端根据第一高层信令确定上行参考信号位置包括：
所述用户终端根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息和频域位置信息；
所述用户终端根据所述频域位置信息和所述时域位置信息确定所述上行参考信号位置。
根据第一方面至第一方面的第七种可能实现的方式中任意一种，在第八种可能实现的方式中，所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号之前，所述方法还包括：
所述用户终端根据第三高层信令或接收到的物理信道的第二控制信息，确定所述用户终端对应的至少一个码字序列；所述第三高层信令或所述第二控制信息中包括所述用户终端对应的码字序列的指示信息；
对应的，所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号，包括：
所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送所述上行参考信号。
根据第一方面至第一方面的第八种可能实现的方式中任意一种，在第九 种可能实现的方式中，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
根据第一方面至第一方面的第九种可能实现的方式中任意一种，在第十种可能实现的方式中，
所述上行参考信号包括：解调参考信号DM-RS和/或探测参考信号SRS。
第二方面，本发明实施例还提供一种上行参考信号传输方法，包括：
基站向用户终端发送第一高层信令；所述第一高层信令用于使得所述用户终端确定上行参考信号位置；所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；
所述基站向所述用户终端发送第二高层信令或通过物理信道发送第一控制信息；所述第二高层信令或所述第一控制信息包括：所述用户终端对应的上行参考信号符号组的指示信息；所述用户终端对应的上行参考信号符号组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；
所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
根据第二方面，在第二方面的第一种可能实现的方式中，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
根据第二方面或第二方面的第一种可能实现的方式，在第二种可能实现的方式中，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
根据第二方面或第二方面的第一种可能实现的方式，在第三种可能实现的方式中，所述时间单元为预设时间间隔中的时间单元；所述预设时间间隔包括保护时间GP。
根据第二方面至第二方面的第三种可能实现的方式中任意一种，在第四种可能实现的方式中，所述上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；所述用户终端对应的上行参考信号子载波 组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号子载波组；
所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号包括：
所述基站接收所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送的所述上行参考信号。
根据第二方面的第四种可能实现的方式，在第五种可能实现的方式中，所述至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
根据第二方面至第二方面的第五种可能实现的方式中任意一种，在第六种可能实现的方式中，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
所述频域位置信息，用于使得所述用户终端在预设时隙或子帧中确定所述上行参考信号位置。
根据第二方面至第二方面的第五种可能实现的方式中任意一种，在第七种可能实现的方式中，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息与频域位置信息；
所述时域位置信息与频域位置信息，用于使得所述用户终端确定所述上行参考信号位置。
根据第二方面的第六种或第七种可能实现的方式，在第八种可能实现的方式中，所述方法还包括：
所述基站通过X2接口向其他基站发送所述上行参考信号位置信息；所述上行参考信号位置信息，用于使所述其他基站的上行参考信号位置与所述基站的所述上行参考信号位置不同。
根据第二方面至第二方面的第八种可能实现的方式中任意一种，在第九种可能实现的方式中，所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号之前，所述方法还包括：
所述基站向所述用户终端发送第三高层信令，或者，通过物理信道向所述用户终端发送第二控制信息；所述第三高层信令或所述第二控制信息包括： 所述用户终端对应的码字序列的指示信息；所述用户终端对应的码字序列的指示信息用于指示所述用户终端确定所述用户终端对应的至少一个码字序列；
所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号，包括：
所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送的所述上行参考信号。
根据第二方面至第二方面的第九种可能实现的方式中任意一种，在第十种可能实现的方式中，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
根据第二方面至第二方面的第十种可能实现的方式中任意一种，在第十一种可能实现的方式中，所述上行参考信号包括：解调参考信号DM-RS和/或探测参考信号SRS。
第三方面，本发明实施例还提供一种用户终端，包括：
确定模块，用于根据第一高层信令确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元，根据第二高层信令或接收到的物理信道的第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；所述第二高层信令或所述第一控制信息中包括：所述用户终端对应的上行参考信号符号组的指示信息；
发送模块，用于在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
根据第三方面，在第三方面的第一种可能实现的方式中，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
根据第三方面或第三方面的第一种可能实现的方式，在第二种可能实现的方式中，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
根据第三方面或第三方面的第一种可能实现的方式，在第三种可能实现 的方式中，所述时间单元包括预设时间间隔中的时间单元；所述预设时间间隔包括保护时间。
根据第三方面至第三方面的第三种可能实现的方式中任意一种，在第四种可能实现的方式中，所述上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
所述确定模块，还用于根据所述第二高层信令或所述第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组和所述用户终端对应的一个上行参考信号子载波组；所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；
所述发送模块，还用于在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送所述上行参考信号。
根据第三方面的第四种可能实现的方式，在第五种可能实现的方式中，所述至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
根据第三方面至第三方面的第五种可能实现的方式中任意一种，在第六种可能实现的方式中，所述确定模块，还用于根据所述第一高层信令确定上行参考信号位置信息，所述上行参考信号位置信息包括频域位置信息，在预设时隙或子帧中，根据所述频域位置信息确定所述上行参考信号位置。
根据第三方面至第三方面的第五种可能实现的方式中任意一种，在第七种可能实现的方式中，所述确定模块，还用于根据所述第一高层信令确定上行参考信号位置信息，所述上行参考信号位置信息包括时域位置信息和频域位置信息，根据所述频域位置信息和所述时域位置信息确定所述上行参考信号位置。
根据第三方面至第三方面的第七种可能实现的方式中任意一种，在第八种可能实现的方式中，所述确定模块，还用于根据第三高层信令或接收到的物理信道的第二控制信息，确定所述用户终端对应的至少一个码字序列；所述第三高层信令或所述第二控制信息中包括所述用户终端对应的码字序列的指示信息；
所述发送模块，还用于在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送所述上行参考信号。
根据第三方面至第三方面的第八种可能实现的方式中任意一种，在第九种可能实现的方式中，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
根据第三方面至第三方面的第九种可能实现的方式中任意一种，在第十种可能实现的方式中，所述上行参考信号包括：解调参考信号DM-RS和/或探测参考信号SRS。
第四方面，本发明实施例还提供一种基站，包括：
发送模块，用于向用户终端发送第一高层信令，向所述用户终端发送第二高层信令或通过物理信道发送第一控制信息；其中，所述第一高层信令用于使得所述用户终端确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，每个上行参考信号符号组包括至少一个时间单元；所述第二高层信令或所述第一控制信息包括：所述用户终端对应的上行参考信号符号组的指示信息；所述用户终端对应的上行参考信号符号组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；
接收模块，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
根据第四方面，在第四方面的第一种可能实现的方式中，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
根据第四方面或第四方面的第一种可能实现的方式，在第二种可能实现的方式中，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
根据第四方面或第四方面的第一种可能实现的方式，在第三种可能实现的方式中，所述时间单元为预设时间间隔中的时间单元；所述预设时间间隔包括保护时间GP。
根据第四方面至第四方面的第三种可能实现的方式中任意一种，在第四 种可能实现的方式中，所述上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；所述用户终端对应的上行参考信号子载波组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号子载波组；
所述接收模块，还用于接收所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送的所述上行参考信号。
根据第四方面的第四种可能实现的方式，在第五种可能实现的方式中，所述至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
根据第四方面至第四方面的第五种可能实现的方式中任意一种，在第六种可能实现的方式中，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
所述频域位置信息，用于使得所述用户终端在预设时隙或子帧中确定所述上行参考信号位置。
根据第四方面至第四方面的第五种可能实现的方式中任意一种，在第七种可能实现的方式中，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息与频域位置信息；
所述时域位置信息与频域位置信息，用于使得所述用户终端确定所述上行参考信号位置。
根据第四方面的第六种或第七种可能实现的方式，在第八种可能实现的方式中，所述发送模块，还用于通过X2接口向其他基站发送所述上行参考信号位置信息；所述上行参考信号位置信息，用于使所述其他基站的上行参考信号位置与所述基站的所述上行参考信号位置不同。
根据第四方面至第四方面的第八种可能实现的方式中任意一种，在第九种可能实现的方式中，所述发送模块，还用于向所述用户终端发送第三高层信令，或者，通过物理信道向所述用户终端发送第二控制信息；所述第三高层信令或所述第二控制信息包括：所述用户终端对应的码字序列的指示信息；所述用户终端对应的码字序列的指示信息用于指示所述用户终端确定所述用 户终端对应的至少一个码字序列；
所述接收模块，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送的所述上行参考信号。
根据第四方面至第四方面的第九种可能实现的方式中任意一种，在第十种可能实现的方式中，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
根据第四方面至第四方面的第十种可能实现的方式中任意一种，在第十一种可能实现的方式中，所述上行参考信号包括：解调参考信号DM-RS和/或探测参考信号SRS。
第五方面，本发明实施例还提供一种用户终端，包括：处理器和发射机；
其中，所述处理器，用于根据第一高层信令确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；根据第二高层信令或接收到的物理信道的第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；所述第二高层信令或所述第一控制信息中包括：所述用户终端对应的上行参考信号符号组的指示信息；
所述发射机，用于在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
根据第五方面，在第五方面的第一种可能实现的方式中，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
根据第五方面或第五方面的第一种可能实现的方式，在第二种可能实现的方式中，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
根据第五方面或第五方面的第一种可能实现的方式，在第三种可能实现的方式中，所述时间单元包括预设时间间隔中的时间单元；所述预设时间间隔包括保护时间。
根据第五方面至第五方面的第三种可能实现的方式中任意一种，在第四种可能实现的方式中，所述上行参考信号位置还包括：至少一个上行参考信 号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
所述处理器，还用于根据所述第二高层信令或所述第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组和所述用户终端对应的一个上行参考信号子载波组；所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；
所述发射机，还用于在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送所述上行参考信号。
根据第五方面的第四种可能实现的方式，在第五种可能实现的方式中，所述至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
根据第五方面至第五方面的第五种可能实现实现的方式中任意一种，在第六种可能实现的方式中，所述处理器，还用于根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括频域位置信息；在预设时隙或子帧中，根据所述频域位置信息确定所述上行参考信号位置。
根据第五方面至第五方面的第五种可能实现实现的方式中任意一种，在第七种可能实现的方式中，所述处理器，还用于根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息和频域位置信息；根据所述频域位置信息和所述时域位置信息确定所述上行参考信号位置。
根据第五方面至第五方面的第七种可能实现实现的方式中任意一种，在第八种可能实现的方式中，所述处理器，还用于根据第三高层信令或接收到的物理信道的第二控制信息，确定所述用户终端对应的至少一个码字序列；所述第三高层信令或所述第二控制信息中包括所述用户终端对应的码字序列的指示信息；
所述发射机，还用于在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送所述上行参考信号。
根据第五方面至第五方面的第八种可能实现实现的方式中任意一种，在第九种可能实现的方式中，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
根据第五方面至第五方面的第九种可能实现实现的方式中任意一种，在第十种可能实现的方式中，所述上行参考信号包括：解调参考信号DM-RS和/或探测参考信号SRS。
第六方面，本发明实施例提供一种基站，包括：发射机和接收机；
其中，所述发射机，用于向用户终端发送第一高层信令，向所述用户终端发送第二高层信令或通过物理信道发送第一控制信息；所述第一高层信令用于使得所述用户终端确定上行参考信号位置；所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；所述第二高层信令或所述第一控制信息包括：所述用户终端对应的上行参考信号符号组的指示信息；所述用户终端对应的上行参考信号符号组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；
所述接收机，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
根据第六方面，在第六方面的第一种可能实现的方式中，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
根据第六方面或第六方面的第一种可能实现的方式，在第二种可能实现的方式中，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
根据第六方面或第六方面的第一种可能实现的方式，在第三种可能实现的方式中，所述时间单元为预设时间间隔中的时间单元；所述预设时间间隔包括保护时间GP。
根据第六方面至第六方面的第三种可能实现的方式中任意一种，在第四种可能实现的方式，所述上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上 行参考信号子载波组的指示信息；所述用户终端对应的上行参考信号子载波组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号子载波组；
所述接收机，还用于接收所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送的所述上行参考信号。
根据第六方面的第四种可能实现的方式，在第五种可能实现的方式中，所述至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
根据第六方面至第六方面的第五种可能实现的方式中任意一种，在第六种可能实现的方式中，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
所述频域位置信息，用于使得所述用户终端在预设时隙或子帧中确定所述上行参考信号位置。
根据第六方面至第六方面的第五种可能实现的方式中任意一种，在第七种可能实现的方式中，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息与频域位置信息；
所述时域位置信息与频域位置信息，用于使得所述用户终端确定所述上行参考信号位置。
根据第六方面的第六种或第七种可能实现的方式，在第八种可能实现的方式中，所述发射机，还用于通过X2接口向其他基站发送所述上行参考信号位置信息；所述上行参考信号位置信息，用于使所述其他基站的上行参考信号位置与所述基站的所述上行参考信号位置不同。
根据第六方面至第六方面的第八种可能实现的方式中任意一种，在第九种可能实现的方式中，所述发射机，还用于向所述用户终端发送第三高层信令，或者，通过物理信道向所述用户终端发送第二控制信息；所述第三高层信令或所述第二控制信息包括：所述用户终端对应的码字序列的指示信息；所述用户终端对应的码字序列的指示信息用于指示所述用户终端确定所述用户终端对应的至少一个码字序列；
所述接收机，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发 送的所述上行参考信号。
根据第六方面至第六方面的第九种可能实现的方式中任意一种，在第十种可能实现的方式中，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
根据第六方面至第六方面的第十种可能实现的方式中任意一种，在第十一种可能实现的方式中，所述上行参考信号包括：解调参考信号DM-RS和/或探测参考信号SRS。
本发明实施例提供的上行参考信号传输方法、用户终端及基站，用户终端可通过根据第一高层信令确定上行参考信号位置，该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元，该用户终端根据第二高层信令或第一控制信息所包括的该用户终端对应的上行参考信号符号组的指示信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组，继而在该用户终端对应的一个上行参考信号符号组上发送上行参考信号。也就是说，各用户终端可在该上行参考信号位置上，各用户终端对应的一个上行参考信号符号组上发送上行参考信号。即便TTI减小，为保证各用户终端发送足够的上行参考信号，可增加该上行参考信号位置上该用户终端对应的一个上行参考信号符号组中的时间单元的个数，和/或，该用户终端对应的一个上行参考信号符号组中时间单元的子载波个数，而无需增加每个TTI内均增加上行参考信号对应的时间单元，因而保证数据传输速率，保证系统的上行容量。
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作一简单地介绍，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为TDD通信系统中无线帧结构的示意图；
图2为FDD通信系统中无线帧结构的示意图；
图3为本发明实施例一提供的一种上行参考信号传输方法的流程图；
图4为本发明实施例二提供的一种上行参考信号位置在一个时隙内的结构示意图；
图5为本发明实施例二提供的一种上行参考信号位置在一个子帧内的结构示意图；
图6为本发明实施例二中一种一个子帧上设计的上行参考信号符号组的时间单元的结构示意图；
图7为本发明实施例二中另一种一个子帧上设计的上行参考信号符号组的时间单元的结构示意图；
图8为本发明实施例二中一种一个时隙上设计的上行参考信号符号组的时间单元的结构示意图；
图9为本发明实施例二中另一种一个时隙上设计的上行参考信号符号组的时间单元的结构示意图；
图10为本发明实施例二提供的一种上行参考信号位置在一个时隙内的结构示意图；
图11为本发明实施例二提供的一种上行参考信号传输方法的流程图；
图12为本发明实施例二提供的上行参考信号传输方法中一种确定上行参考信号位置的方法流程图；
图13为本发明实施例二提供的上行参考信号传输方法中另一种确定上行参考信号位置的方法流程图；
图14为本发明实施例二提供的一种上行参考信号传输方法的流程图；
图15为本发明实施例三提供的一种上行参考信号传输方法的流程图；
图16为本发明实施例四提供的上行参考信号传输方法的流程图；
图17为本发明实施例五提供的用户终端的结构示意图；
图18为本发明实施例六提供的基站的结构示意图；
图19为本发明实施例七提供的用户终端的结构示意图；
图20为本发明实施例八提供的基站的结构示意图；
图21为本发明实施例九提供的网络系统的结构示意图。
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作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。
本发明各实施例的方案可适用于LTE通信系统或LTE的演进行通信系统，如高级长期演进(Long Term Evolution-Advanced，简称LTE-A)通信系统中。LTE通信系统或LTE-A通信系统包括时分双工(Time Division Duplexing，简称TDD)通信系统和频分双工(Frequency Division Duplexing，简称FDD)通信系统。
图1为TDD通信系统中无线帧结构的示意图。如图1所示，该TDD通信系统中，一个无线帧可包括子帧#0～子帧#9的10个子帧，其中，每个子帧包括两个0.5ms的时隙(slot)。该10个子帧中可包括上行子帧、下行子帧和特殊子帧。该上行子帧、该下行子帧和该特殊子帧对应的具体子帧，可以是根据上下行配置信息，和该上下行配置信息与子帧号的对应关系表确定的。该TDD通信系统中上下行配置与子帧号的对应关系可如下表1所示。
Figure PCTCN2015086842-appb-000001
表1
该表1中，D为下行子帧，S为特殊子帧，U为上行子帧。
根据该图1可知，该TDD通信系统中的特殊子帧包括：下行导频时隙(Downlink Pilot Time Slot，简称DwPTS)、保护时间(Guard Period，简称GP)和上行导频时隙(Uplink Pilot Time Slot，简称UpPTS)。该特殊子帧中DwPTS、GP及UpPTS对应的时间长度可根据如下表2确定。
Figure PCTCN2015086842-appb-000002
表2
根据图1可知，特殊子帧的总时间为30720Ts，结合表2中特殊子帧中DwPTS及UpPTS的时间，即可确定该特殊子帧中GP的时间。
图2为FDD通信系统中无线帧结构的示意图。如图2所示，该FDD通信系统中，一个无线帧可包括时隙#0～时隙#19的20个时隙，该20个时隙可被划分为10个子帧，每个子帧包括两个0.5ms的时隙。
在LTE通信系统中，按照时间和频率分成传输资源。在时域上，最大的时间单元是10ms的无线帧，被分成10个1ms的子帧，每个子帧又被分为两个0.5ms的时隙(slot)。对于正常循环前缀(Normal Cyclic Prefix，简称NCP)情况，一个slot由7个时间单元组成；对于扩展循环前缀(Extended Cyclic Prefix，简称ECP)的情况，一个slot由6个时间单元组成。在频域上，每12个子载波组成一个180kHz的资源单元(Resource Element，简称RE)。时频资源的最小单元是RE，它是由频率上的一个子载波和时间上的一个时间单元持续时间组成的二维资源。1个资源块(Resource Block，简称RB)为时 域上一个slot频域上12个子载波的资源块。对于正常循环前缀，一个RB包含84个RE,对于扩展循环前缀，一个RB包含72个RE。
本发明的各实施例中，TTI可以为一个子帧，也可以为一个时隙，甚至还可以为一个时间单元。若该TTI为一个子帧，则该TTI为1ms。若该TTI为一个时隙，则该TTI可以为0.5ms。若该TTI为一个时间单元，则该TTI可以为一个时间单元持续的时间，其中时间单元可以是15kHz子载波间隔的LTE系统的正交频分复用多址(Freq用户终端ncy Division Multiple Access，简称OFDMA)符号或者单载波频分多址(Single Carrier Freq用户终端ncy Division Multiple Access，简称SC-FDMA)符号，或者更大子载波间隔的通信系统的符号。需要说明的是，本发明各实施例的TTI还可以包括多个时间单元且小于一个时隙的时间。
本发明实施例一提供一种上行参考信号传输方法。用户终端可通过执行该实施例一的上行参考信号传输方法向基站发送该用户终端的上行参考信号，基站在接收到该用户终端发送的上行参考信号后，根据该上行参考信号对该用户终端进行信道探测或信道估计、频偏估计，从而根据该信道探测的结果，对该用户终端进行调度，或者，根据该频偏估计的结果对该用户终端的上行数据的所在频率进行校准，继而根据该校准后的频率和该信道估计结果接收该用户终端发送的数据。
图3为本发明实施例一提供的一种上行参考信号传输方法的流程图。如图3所示，该上行参考信号传输方法可包括：
S301、用户终端根据第一高层信令确定上行参考信号位置，该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元。
具体地，该用户终端例如可以为用户设备(User Equipment，简称UE)、移动站点(Mmobile Station，简称MS)、移动终端等。该移动终端例如可以为手机、笔记本电脑、平板电脑等。该第一高层信令可以为该用户终端接收到的任一高层信令。该第一高层信令可以为无线资源控制(Radio Resource Control，简称RRC)信令、介质访问控制(Medium Access Control，简称MAC)信令或其他信令。该基站可以为该用户终端所在小区的基站。该上行参考信号位置可以包括该基站的小区内多个用户终端的上行参考信号位置。 也就是说，本发明实施例一的该方法中，该基站的小区内的多个用户终端在该上行参考信号位置上各用户终端对应的上行参考信号符号组上进行发送上行参考信号。
该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元。该多个用户终端中的每个用户终端可对应该上行参考信号位置中的一个上行参考信号符号组。该多个用户终端中不同用户终端对应的上行参考信号符号组可以相同，也可以不同。若该不同用户终端对应的上行参考信号符号组相同，也就是说，该不同用户终端的上行参考信号的时域位置相同，则该不同用户终端的上行参考信号的频域位置不同，和/或，该不同用户终端的上行参考信号的码字序列不同。若该不同用户终端对应的上行参考信号符号组不同，也就是说，该不同用户终端的上行参考信号的时域位置相同，则该不同用户终端的上行参考信号的频域位置可以相同也可以不同，该不同用户终端的上行参考信号的码字序列可以相同也可不同。
该上行参考信号位置包括的该至少一个上行参考信号符号组中的时间单元，可以包括一个子帧或一个时隙内的时间单元。
S302、该用户终端根据第二高层信令或接收到的物理信道的第一控制信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组；该第二高层信令或该第一控制信息中包括：该用户终端对应的上行参考信号符号组的指示信息。
具体地，该第二高层信令也可以为该用户终端接收到的任一高层信令。该第二高层信令可以与该第一高层信令相同，也可以不同。该物理信道可以为下行物理信道，如：物理下行控制信道(Physical Downlink Control Channel，简称PDCCH)，或增强的物理下行控制信道(Enhanced Physical Downlink Control Channel，简称EPDCCH)。
由于该上行参考信号包括该多个用户终端的上行参考信号位置，该用户终端可以是根据该第二高层信令或该第一控制信息中的该用户终端对应的上行参考信号符号组的指示信息，从该多个用户终端的上行参考信号位置中确定该用户终端对应的一个上行参考信号符号组。该用户终端对应的上行参考信号符号组的指示信息，可以包括：该用户终端对应的上行参考信号符号组 的标识，和/或，该用户终端对应的上行参考信号符号组中时间单元的标识。
S303、该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
具体地，该用户终端可以是在该用户终端对应的一个上行参考信号符号组的至少一个时间单元上发送该上行参考信号。该用户终端还可在该上行参考信号位置外的时频位置上发送上行数据。
本发明实施例一提供的上行参考信号传输方法，用户终端可通过根据第一高层信令确定上行参考信号位置，该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元，该用户终端根据第二高层信令或第一控制信息所包括的该用户终端对应的上行参考信号符号组的指示信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组，继而在该用户终端对应的一个上行参考信号符号组上发送上行参考信号。也就是说，各用户终端可在该上行参考信号位置上，各用户终端对应的一个上行参考信号符号组上发送上行参考信号。由于用户终端是在上行参考信号位置中该用户终端对应的上行参考信号符号组上发送上行信号，因此用户终端发送上行数据和上行参考信号分别在不同的时频资源上发送，即便TTI减小，依然可以在上行参考信号位置上发送足够的上行参考信号，而无需增加TTI内发送的上行参考信号对应的时间单元，因而保证数据传输速率，保证系统的上行容量。
本发明实施例二还提供一种上行参考信号传输方法。可选的，若该每个上行参考信号符号组包括多个时间单元，该多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
具体地，若该每个上行参考信号符号组包括多个时间单元，则该用户终端对应的一个上行参考信号符号组中包括多个时间单元。该用户终端在每两个时间单元间存在至少一个时间单元的时间间隔的多个时间单元发送该上行参考信号，可使得基站在接收到该上行参考信号后进行频偏估计的结果更准确。
举例来说，若该上行参考信号位置包括一个时隙上设计的上行参考信号符号组的时间单元，则该上行参考信号位置包括的至少一个上行参考信号符号组中的时间单元可以为一个时隙上的时间单元。在正常循环前缀的情况下， 一个时隙可包括7个符号，每个符号相当于一个时间单元。图4为本发明实施例二提供的一种上行参考信号位置在一个时隙内的结构示意图。如图4所示，在一个时隙内，该上行参考信号位置可包括三个上行参考信号符号组，其中，第一上行参考信号符号组包括#0和#3两个符号对应的时间单元，第二上行参考信号符号组包括#1和#4两个符号对应的时间单元，第三上行参考信号符号组包括#2和#5两个符号对应的时间单元。该上行参考信号位置中每组上行参考符号组中的时间单元对应的符号个数可以不同，也就是说，在一个时隙内的该六个符号对应的时间单元还可划分为其他个数的上行参考信号符号组。即该一个时隙内，该上行参考信号位置可包括其他个数上行参考信号符号组。该其他个数可大于3小于6。该用户终端可以是根据该第二高层信令或该第一控制信息中的，该用户终端对应的上行参考信号符号组的指示信息，从该一个时隙内的上行参考符号组中的多个上行参考信号符号组中选择一个作为该用户终端对应的上行参考信号符号组。需要说明的是，该图4仅为该上行参考信号位置在一个时隙上一种示例，该上行参考信号位置包括的至少一个上行参考信号符号组中各上行参考信号符号组的时间单元还可为其他的分布，在此不再赘述。
举例来说，该上行参考信号位置包括一个子帧上设计的上行参考信号符号组的时间单元，则该上行参考信号位置包括的至少一个上行参考信号符号组中的时间单元可以为一个子帧上的时间单元。在正常循环前缀的情况下，一个子帧可包括14个符号，每个符号相当于一个时间单元。图5为本发明实施例二提供的一种上行参考信号位置在一个子帧内的结构示意图。如图5所示，在一个子帧内，该上行参考信号位置可包括7个上行参考信号符号组，其中，第一上行参考信号符号组包括#0和#7两个符号对应的时间单元，第二上行参考信号符号组包括#1和#8两个符号对应的时间单元，第三上行参考信号符号组包括#2和#9两个符号对应的时间单元，第四上行参考信号符号组包括#3和#10两个符号对应的时间单元，第五上行参考信号符号组包括#4和#11两个符号对应的时间单元，第六上行参考信号符号组包括#5和#12两个符号对应的时间单元，第七上行参考信号符号组包括#6和#13两个符号对应的时间单元。该上行参考信号位置中每组上行参考符号组中的时间单元对应的符号个数可以不同，也就是说，在一个子帧内的该14个符号还可划分为其他个 数的上行参考信号符号组。即该一个子帧内，该上行参考信号位置可包括其他个数上行参考信号符号组。该其他个数可大于7小于14。该用户终端可以是根据该第二高层信令或该第一控制信息中的，该用户终端对应的上行参考信号符号组的指示信息，从该一个时隙内的上行参考符号组中的多个上行参考信号符号组中选择一个作为该用户终端对应的上行参考信号符号组。需要说明的是，该图5仅为该上行参考信号位置在一个子帧上一种示例，该上行参考信号位置包括的至少一个上行参考信号符号组中各上行参考信号符号组的时间单元还可为其他的分布，在此不再赘述。
可选的，该时间单元为预设时间单元外的时间单元；该预设时间单元为1ms TTI对应的上行参考信号的时间单元。
具体地，为避免该用户终端发送的上行参考信号与本小区或者相邻小区的1ms TTI的老版本用户终端发送的上行参考信号之间的互相干扰，可使得该每个上行参考信号符号组中的时间单元为1ms的TTI对应的上行参考信号的时间单元外的其他时间单元，则该用户终端发送的上行参考信号的时间单元，即该用户终端在该上行参考信号位置中确定该用户终端对应的上行参考信号符号组的时间单元，与1ms的老版本用户终端发送上行参考信号的时间单元不同。
举例来说，该上行参考信号位置包括一个子帧上设计的上行参考信号符号组的时间单元，则该上行参考信号位置包括的至少一个上行参考信号符号组中的时间单元可以为一个子帧上的时间单元。在正常循环前缀情况下，一个子帧包括两个时隙，其中每个时隙包括7个符号，即一个子帧可包括14个上行符号，每个符号相当于一个时间单元。图6为本发明实施例二中一种一个子帧上设计的上行参考信号符号组的时间单元的结构示意图。如图6所示，该子帧可包括：#0～#13的14个符号。本小区或者相邻小区的1ms TTI对应的上行参考信号中的探测参考信号(Sounding Reference Signal，简称SRS)可能出现在#13符号上，上行参考信号中的解调参考信号(DeModulation Reference Signal，简称DM-RS)出现在#3、#10符号上。因此，正常循环前缀情况下，为避免该用户终端发送的上行参考信号与本小区或者相邻小区的1ms TTI的老版本用户终端发送的上行参考信号之间的互相干扰，可避开1ms TTI的SRS和DM-RS对应的符号，则该上行参考信号位置的每个上行参考 信号符号组中的时间单元可以为#3、#10及#13三个符号之外的其他符号对应的时间单元。也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#4、#5、#6、#7、#8、#9、#11、#12符号中的至少一个符号对应的时间单元；若为了避开1ms TTI的SRS，则该每个上行参考信号符号组中的时间单元可以为#13符号之外的其他符号对应的时间单元。也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#3、#4、#5、#6、#7、#8、#9、#10、#11、#12符号中的至少一个符号对应的时间单元；若只为了避开1ms TTI的DMRS，则该每个上行参考信号符号组中的时间单元可以为#3、#10符号之外的其他符号对应的时间单元，也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#4、#5、#6、#7、#8、#9、#11、#12、#13符号中的至少一个符号对应的时间单元。
在扩展循环前缀情况下，一个子帧包括两个时隙，其中每个时隙包括6个符号，一个子帧可包括12个上行符号，每个符号相当于一个时间单元。图7为本发明实施例二中另一种一个子帧上设计的上行参考信号符号组的时间单元的结构示意图。如图7所示，该子帧可包括：#0～#11符号的12个符号。本小区或者相邻小区的1ms TTI的老版本用户终端对应的上行参考信号中的SRS可能出现在#11符号上，上行参考信号中的DM-RS出现在#2、#8符号上。因此，扩展循环前缀情况下，为避免该用户终端发送的上行参考信号与本小区或者相邻小区的1ms TTI的老版本用户终端发送的上行参考信号之间的互相干扰，可避开1ms TTI的SRS和DM-RS对应的符号，则该上行参考信号位置的每个上行参考信号符号组中的时间单元可以为#2、#8及#11三个符号之外的其他符号。也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#3、#4、#5、#6、#7、#9、#10符号中的至少一个符号对应的时间单元；若只为了避开1ms TTI的SRS，则该每个上行参考信号符号组中的时间单元可以为#11符号之外的其他符号对应的时间单元。也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#3、#4、#5、#6、#7、#8、#9、#10符号中的至少一个符号对应的时间单元；若只为了避开1ms TTI的DMRS，则该每个上行参考信号符号组中的时间单元可以为#2、#8符号之外的其他符号对应的时间单元，也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#3、#4、#5、#6、#7、#9、#10、#11符号中的 至少一个符号对应的时间单元。
举例来说，若该上行参考信号位置包括一个时隙上设计的上行参考信号符号组的时间单元，则该上行参考信号位置包括的至少一个上行参考信号符号组中的时间单元可以为一个时隙上的时间单元。在正常循环前缀情况下的一个时隙中，一个时隙包括7个符号，每个符号相当于一个时间单元。图8为本发明实施例二中一种一个时隙上设计的上行参考信号符号组的时间单元的结构示意图。如图8所示，该时隙包括#0～#6的7个符号。本小区或者相邻小区的1ms TTI的老版本用户终端在该时隙上对应的上行参考信号中的DM-RS出现在#3符号，上行参考信号中的SRS可能出现在#6符号。因此，正常循环前缀情况下，为避免该用户终端发送的上行参考信号与本小区或者相邻小区的1ms TTI的老版本用户终端发送的上行参考信号之间的互相干扰，可避开1ms TTI的SRS和DM-RS对应的符号，则该上行参考信号位置的每个上行参考信号符号组中的时间单元可以为#3及#6符号之外的其他符号对应的时间单元。也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#4、#5符号中的至少一个符号对应的时间单元；若只为了避开1ms TTI的SRS，则该每个上行参考信号符号组中的时间单元可以为#6符号之外的其他符号对应的时间单元，也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#3、#4、#5符号中的至少一个符号对应的时间单元；若只为了避开1ms TTI的DMRS，则该每个上行参考信号符号组中的时间单元可以为#3符号之外的其他符号对应的时间单元，也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#4、#5、#6符号中的至少一个符号对应的时间单元。
在扩展循环前缀情况下的一个时隙，一个时隙包括6个符号，每个符号相当于一个时间单元。图9为本发明实施例二中另一种一个时隙上设计的上行参考信号符号组的时间单元的结构示意图。如图9所示，该时隙可包括：#0～#5的6个符号。本小区或者相邻小区的1ms TTI的老版本用户终端在该时隙上对应的上行参考信号中的DM-RS出现在#2符号，上行参考信号中的SRS可能出现在#5符号。因此，扩展循环前缀情况下，为避免该用户终端发送的上行参考信号与本小区或者相邻小区的1ms TTI的老版本用户终端发送的上行参考信号之间的互相干扰，可避开1ms TTI的SRS和DM-RS对应的 符号，则该上行参考信号位置的每个上行参考信号符号组中的时间单元可以为#2、#5两个符号之外的其他符号对应的时间单元。也就是说，该每个上行参考信号符号组中的时间单元可包括#0、#1、#2、#4中的至少一个符号对应的时间单元；若只为了避开1ms TTI的SRS，则该每个上行参考信号符号组中的时间单元可以为#5符号之外的其他符号对应的时间单元，也就是说，该每个上行参考信号符号组中时间单元可包括#0、#1、#2、#3、#4符号中的至少一个符号对应的时间单元；若只为避开1ms TTI的DMRS，则该每个上行参考信号符号组中的时间单元可以为#2符号之外的其他符号对应的时间单元，也就是说，该每个上行参考信号符号组中时间单元可包括#0、#1、#3、#4、#5符号中的至少一个符号对应的时间单元。
举例来说，若该上行参考信号位置包括一个时隙上设计的上行参考信号符号组的时间单元，则该上行参考信号位置包括的至少一个上行参考信号符号组中的时间单元可以为一个时隙上的时间单元。在正常循环前缀情况下，该一个时隙可包括7个上行符号，每个符号对应一个时间单元。图10为本发明实施例二提供的一种上行参考信号位置在一个时隙内的结构示意图。在一个时隙内，由于#0符号对应的时间单元添加的循环前缀(Cyclic Prefix，简称CP)较长，其信道条件不适合与其他时间单元的信道进行平均；由于#3和#6的两个符号对应的时间单元为本小区或者相邻小区的1ms TTI的老版本用户终端对应的上行参考信号的时间单元。因此，如图10所示，该上行参考信号位置可包括#1、#2、#4和#5四个符号对应的时间单元。其中，该四个符号可划分为两个上行参考信号符号组，其中，该两个上行参考信号符号组中一个上行参考信号符号组可包括#1和#4两个符号对应的时间单元，另一个上行参考信号符号组可包括#2和#5两个符号对应的时间单元。需要说明的是，该图10仅为该上行参考信号位置在一个时隙上一种示例，该两个上行参考信号符号组中一个上行参考信号符号组也可包括#1和#5两个符号对应的时间单元，两一个上行参考信号符号组可包括#2和#4两个符号对应的时间单元。或者，其中该四个SC-FDMA符号可划分为4个上行参考信号符号组。该用户终端可以是根据该第二高层信令或该第一控制信息中的，该用户终端对应的上行参考信号符号组的指示信息，从该两个或四个上行参考信号符号组中选择一个作为该用户终端对应的上行参考信号符号组。
可替地，该时间单元还可以为预设时间间隔中的时间单元；该预设时间间隔包括GP。
具体地，若该预设时间间隔包括GP，则该预设时间间隔实际包括的是GP中可用于上行的空闲时间单元。
举例来说，若在TDD通信系统中GP上设计上行参考信号符号组的时间单元结构，在正常循环前缀情况下，特殊子帧配置1时，该GP可包括8个符号，每个符号相当于一个时间单元。在一个GP内，由于#0～#3符号距离DwPTS比较近，对于TDD通信系统的用户终端下行传输与上行传输的切换可能还没有结束，所以该上行参考信号位置的每个上行参考信号符号组中的时间单元可包括#4～#7符号对应时间单元，即，该用户终端可在该#4～#7符号对应时间单元中该用户终端对应的上行参考信号符号组包括的至少一个符号对应的时间单元上发送上行参考信号。因此，该上行参考信号位置可包括#4、#5、#6和#7四个符号对应的时间单元。其中，该四个符号对应的时间单元可划分为两个上行参考信号符号组，其中，该两个上行参考信号符号组中一个上行参考信号符号组可包括#4和#6两个符号对应的时间单元，另一个上行参考信号符号组可包括#5和#7两个符号对应的时间单元；该两个上行参考信号符号组中一个上行参考信号符号组也可包括#4和#7两个符号对应的时间单元，两一个上行参考信号符号组可包括#5和#6两个符号对应的时间单元。或者，其中该四个符号对应的时间单元可划分为4个上行参考信号符号组。该用户终端可以是根据该第二高层信令或该第一控制信息中的，该用户终端对应的上行参考信号符号组的指示信息，从该两个或四个上行参考信号符号组中选择一个作为该用户终端对应的上行参考信号符号组。
可选的，该上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波。
该上行参考信号对应的码字序列可包括扎道夫朱(Zadoff-Chu，简称ZC)序列，由于ZC序列的长度至少为12个码字，因此，该每个上行参考信号子载波组包括至少十二个上行子载波，以使得每个用户终端具有足够的子载波以传输足够的ZC序列的码字。
具体地，该多个用户终端中的每个用户终端可对应该上行参考信号位置中的一个上行参考信号子载波组，也就是说，多个用户终端中不同用户终端 的上行参考信号，在根据用户终端对应的上行参考信号符号组进行时分的基础上，还可通过用户终端对应的上行参考信号子载波组进行频分，还可通过用户终端对应的上行参考信号码字进行码分。因此，在时域资源一定的情况下，本发明实施例的方案，在可对不同用户终端对应的上行参考信号还可进行频分。可选的，在时频资源一定的情况下，本发明实施例的方案，还可在对不同用户终端对应的上行参考信号进行时域频域的基础上，进行上行参考信号的码分，因此，可提高基站支持的用户终端个数，从而提高系统容量。
图11为本发明实施例二提供的一种上行参考信号传输方法的流程图。如图11所示，可选的，上述实施例一的S303中该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元发送上行参考信号可以包括：
S1101、该用户终端根据该第二高层信令或该第一控制信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组和该用户终端对应的一个上行参考信号子载波组；该第二高层信令或该第一控制信息还包括：该用户终端对应的上行参考信号子载波组的指示信息。
具体地，该用户终端可以是根据该第二高层信令或该第一控制信息中的，该用户终端对应的上行参考信号符号组的指示信息，从该上行参考信号位置中的至少一个上行参考信号符号组中，确定该用户终端对应的上行参考信号符号组，根据该用户终端对应的上行参考信号子载波组的指示信息，从该至少一个上行参考信号子载波组中确定该用户终端对应的上行参考信号子载波组。
可选的，S303中该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号包括：
S1102、该用户终端在时域为该用户终端对应的一个上行参考信号符号组的时间单元，且，频域为该用户终端对应的一个上行信号子载波组的子载波上发送该上行参考信号。
可选的，该至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
具体地，若该用户终端对应的一个上行参考信号子载波组中包括至少十二个上行子载波，则该用户终端在每两个上行子载波间存在至少一个上行子载波的频率间隔的至少十二个上行子载波发送该上行参考信号，这样不同用 户终端可以是在梳妆的子载波位置进行发送，这样不同用户终端对应的上行参考信号子载波组中的子载波更加离散，便于基站在有限的子载波上利用上行参考信号进行更宽频域的信道探测。
图12为本发明实施例二提供的上行参考信号传输方法中一种确定上行参考信号位置的方法流程图。如图12所示，可选的，上述S301中用户终端根据第一高层信令确定上行参考信号位置可以包括：
S1201、该用户终端根据该第一高层信令确定上行参考信号位置信息，该上行参考信号位置信息包括：频域位置信息。
具体地，该频域位置信息可以包括：物理资源块(Physical Resource Block，简称PRB)索引，资源块组(Resource Block Group，简称RBG)索引，虚拟资源块(Virtul Resource Block，简称VRB)索引，子载波索引，或子载波组索引。
其中，PRB和VRB分别为不同的资源分配单位。PRB包括频域上12个连续的子载波，时域上一个时隙的资源。在集中式资源分配时VRB与PRB的定义相同，在分布式资源分配时VRB与PRB有一定的对应关系。PRB索引为PRB的索引。VRB索引为VRB的索引，因此，该PRB索引和该VRB索引可以不同。RBG可包括多个PRB，也就是RBG中包括的PRB的个数可以是根据该用户终端的带宽确定的或者基站配置的。其中，PRB索引可以为PRB的编号，RBG索引可以为RBG的编号，VRB索引可以为VRB的编号，子载波索引可以为子载波的编号，子载波组索引可以为子载波组的编号。子载波组可以包括至少一个子载波。
S1202、该用户终端在预设时隙或预设子帧中，根据该频域位置信息确定该上行参考信号位置。
该频域位置信息对应的频域资源处于该基站的载波带宽中。也就是说，在本发明实施例中，该上行参考信号位置中至少一个上行参考信号符号组的时域可以为预设时隙或预设子帧中，频域为该频域位置信息所指示的位置。
可替代地，本发明实施例二还提供另一种确定上行参考信号位置的方法。图13为本发明实施例二提供的上行参考信号传输方法中另一种确定上行参考信号位置的方法流程图。如图13所示，可选的，上述S301中用户终端根据第一高层信令确定上行参考信号位置可以包括：
S1301、该用户终端根据该第一高层信令确定上行参考信号位置信息，该上行参考信号位置信息包括：时域位置信息和频域位置信息。
该时域位置信息可包括：符号(symbol)索引，符号组(symbol group)索引，时隙(slot)索引或子帧(subframe)索引。其中，符号可以是15kHz子载波间隔的LTE通信系统的OFDMA符号或者SC-FDMA符号，或者更大子载波间隔的通信系统的符号。其中，时隙可以为15kHz子载波间隔的LTE通信系统的时间长度为0.5ms的时隙，或者是更大子载波间隔的通信系统的时隙，如60kHz子载波间隔的通信系统的时间长度为0.125ms的时隙。其中，子帧可以为15kHz子载波间隔的LTE系统的1ms子帧，或者是更大子载波间隔的通信系统的子帧，如60kHz子载波间隔的通信系统的时间长度为0.25ms的子帧。
S1302、该用户终端根据该频域位置信息和该时域位置信息确定该上行参考信号位置。
也就是说，该上行参考信号位置中至少一个上行参考信号符号组的时域可以为该时域位置信息所指示的时域位置，其频域可以为该频域位置信息所指示的频域位置。
可选的，本发明实施例二还提供一种确定上行参考信号的方法。图14为本发明实施例二提供的一种上行参考信号传输方法的流程图。如图14所示，可选的，该方法在上述实施例一的S303中该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号之前，还可包括：
S1401、该用户终端根据第三高层信令或接收到的物理信道的第二控制信息，确定该用户终端对应的至少一个码字序列；该第三高层信令或该第二控制信息中包括该用户终端对应的码字序列的指示信息。
对应的，该S303中该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号，可包括：
S1402、该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上利用该用户终端对应的至少一个码字序列发送该上行参考信号。
具体地，该用户终端对应的至少一个码字序列可包括伪随机序列或正交序列，如ZC序列。该用户终端可以是通过该用户终端对应的至少一个码字序列发送该上行参考信号。
可选的，该时间单元可以为SC-FDMA符号对应的时间单元，或，OFDMA符号对应的时间单元。
可选的，本发明各实施例中的上行参考信号可包括：DMRS和/或SRS。
本发明实施例二提供的各上行参考信号传输方法，通过在每个上行参考信号符号组中的多个时间单元中每两个时间单元间设置时间间隔，可使得每个用户终端在该多个时间单元中非连续时间单元发送的该上行参考信号，从而保证基站对该用户终端进行频偏估计的结果更准确。同时，本发明实施例二的方法，还由于该时间单元为预设时间单元外的时间单元，可避免该用户终端发送的上行参考信号与本小区或者相邻小区的1ms TTI的老版本用户终端发送的上行参考信号之间的互相干扰。其中，该时间单元还可以为GP中的至少一个时间间隔中的时间单元，使得特殊子帧的时间单元得到充分利用，降低上行子帧中上行参考信号的时间单元，保证上行数据的传输，提高数据传输率。
本发明实施例三还提供一种上行参考信号传输方法。图15为本发明实施例三提供的一种上行参考信号传输方法的流程图。如图15所示，该方法可包括：
S1501、基站向用户终端发送第一高层信令；该第一高层信令用于使得该用户终端确定上行参考信号位置；该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元。
S1502、该基站向该用户终端发送第二高层信令，或通过物理信道发送第一控制信息；该第二高层信令或该第一控制信息包括：该用户终端对应的上行参考信号符号组的指示信息；该用户终端对应的上行参考信号符号组的指示信息，用于指示该用户终端在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组。
S1503、该基站接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
可选的，若该每个上行参考信号符号组包括多个时间单元，该多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
可选的，该时间单元为预设时间单元外的时间单元；该预设时间单元为1ms的TTI对应的上行参考信号的时间单元。
可选的，该时间单元为预设时间间隔中的时间单元；该预设时间间隔包括GP。
可选的，该上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
该第二高层信令或该第一控制信息还包括：该用户终端对应的上行参考信号子载波组的指示信息；该用户终端对应的上行参考信号子载波组的指示信息，用于指示该用户终端在该上行参考信号位置上确定该用户终端对应的一个上行参考信号子载波组。
上述S1503中该基站接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号可以包括：
该基站接收该用户终端在时域为该用户终端对应的一个上行参考信号符号组的时间单元，且，频域为该用户终端对应的一个上行信号子载波组的子载波上发送的该上行参考信号。
可选的，若该每个上行参考信号子载波组包括至少十二个上行子载波；该至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
可选的，该第一高层信令包括上行参考信号位置信息；其中，该上行参考信号位置信息包括：频域位置信息。
该频域位置信息，用于使得该用户终端在预设时隙或子帧中确定该上行参考信号位置。
可替代地，该第一高层信令包括上行参考信号位置信息；其中，该上行参考信号位置信息包括：时域位置信息与频域位置信息；
该时域位置信息与频域位置信息，用于使得该用户终端确定该上行参考信号位置。
可选的，该方法还包括：
该基站通过X2接口向其他基站发送该上行参考信号位置信息；该上行参考信号位置信息用于使该其他基站的上行参考信号位置与该基站的该上行参考信号位置不同。
可选的，上述S1503中该基站接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号之前，该方法还包括：
该基站向该用户终端发送第三高层信令，或者，通过物理信道向该用户 终端发送第二控制信息；该第三高层信令或该第二控制信息包括：该用户终端对应的码字序列的指示信息；该用户终端对应的码字序列的指示信息用于指示该用户终端确定该用户终端对应的至少一个码字序列。
对应的，上述S1503中该基站接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号，包括：
该基站接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上利用该用户终端对应的至少一个码字序列发送的该上行参考信号。
可选的，该时间单元为SC-FDMA符号对应的时间单元，或，OFDMA符号对应的时间单元。
可选的，该上行参考信号可以包括：DMRS，和/或，SRS。
本发明实施例三的上行参考信号传输方法为上述实施例一或二所述的上行参考信号传输方法的相对应的传输方法，其有益效果与上述实施例类似，在此不再赘述。
本发明实施例四还提供一种上行参考信号传输方法。若该基站所在小区包括第一用户终端和第二用户终端。图16为本发明实施例四提供的上行参考信号传输方法的流程图。如图16所示，该方法可包括：
S1601、基站向第一用户终端发送第一上行参考信号位置信息，该第一上行参考信号位置信息包括第一时域位置信息和第一频域位置信息。
该基站可以是通过高层信令向该第一用户终端发送该第一上行参考信号位置信息。
S1602、基站向第二用户终端发送第二上行参考信号位置信息，该第二上行参考信号位置信息包括第二时域位置信息和第二频域位置信息。
该基站也可以是通过高层信令向该第二用户终端发送该第二上行参考信号位置信息。该基站发送该第一上行参考信号位置信息的高层信令，可以与，该基站发送该第二上行参考信号位置信息的高层信令相同，也可不同。
S1603、基站通过物理信道向第一用户终端发送该第一用户终端对应的上行参考信号符号组的指示信息和该第一用户终端对应的上行参考信号子载波组的指示信息。
该物理信道可以为如PDCCH和EPDCCH中任一下行物理信道。
S1604、基站通过物理信道向第二用户终端发送该第二用户终端对应的上行参考信号符号组的指示信息和该第二用户终端对应的上行参考信号子载波组的指示信息。
基站发送该第一用户终端对应的上行参考信号符号组的指示信息和该第一用户终端对应的上行参考信号子载波组的指示信息的物理信道，与发送该第二用户终端对应的上行参考信号符号组的指示信息和该第二用户终端对应的上行参考信号子载波组的指示信息的物理信道的物理信道，可以相同，也可不同。
S1605、基站通过X2接口向其他基站发送该第一上行参考信号位置信息和该第二上行参考信号位置信息，该上行参考信号位置信息和该第二上行参考信号位置信息用于使得其他基站的上行参考信号位置与该基站的上行参考信号位置信息不同。
该基站的上行参考信号位置可包括该第一上行参考信号位置和该第二上行参考信号位置。
S1606、第一用户终端根据该第一时域位置信息和该第一频域位置信息确定第一上行参考信号位置，根据该第一用户终端对应的上行参考信号符号组的指示信息和该第一用户终端对应的上行参考信号子载波组的指示信息在该第一上行参考信号位置上确定该第一用户终端对应的上行参考信号符号组和该第一用户终端对应的上行参考信号子载波组。
S1607、基站向第一用户终端发送第一码字序列的指示信息。
基站可以通过高层信令或物理信道向该第一用户终端发送该第一码字序列的指示信息。
S1608、第一用户终端根据该第一码字序列的指示信息确定该第一用户终端对应的该第一码字序列，并在时域为该第一用户终端对应的上行参考信号符号组的时间单元，频域为该第一用户终端对应的上行参考信号子载波组的子载波上利用该第一码字序列向基站发送该第一用户终端的上行参考信号。
S1609、第二用户终端根据该第二时域位置信息和该第二频域位置信息确定第二上行参考信号位置，根据该第二用户终端对应的上行参考信号符号组的指示信息和该第二用户终端对应的上行参考信号子载波组的指示信息在该第二上行参考信号位置上确定该第二用户终端对应的上行参考信号符号组和 该第二用户终端对应的上行参考信号子载波组。
其中，第二用户终端确定的该第二上行参考信号位置可以与第一用户终端确定的该第一上行参考信号位置相同，也可以不同；第二用户终端确定的第二用户终端对应的上行参考信号符号组可以第二用户终端确定的第二用户终端对应的上行参考信号符号组相同，也可以不同；第二用户终端确定的第二用户终端对应的上行参考信号子载波组可以第二用户终端确定的第二用户终端对应的上行参考信号子载波组相同，也可以不同；
S1610、基站向第二用户终端发送第二码字序列的指示信息。
基站可以通过高层信令或物理信道向该第二用户终端发送该第二码字序列的指示信息。该基站可通过相同或不同的高层信令发送该第一码字序列的指示信息和该第二码字序列的指示信息，也可通过相同或不同的物理信道发送该第一码字序列的指示信息和该第二码字序列的指示信息。该基站还可通过高层信令发送该第一码字序列的指示信息，通过物理信道发送该第二码字序列的指示信息。反之，该基站还可通过高层信令发送该第二码字序列的指示信息，通过物理信道发送该第一码字序列的指示信息。
S1611、第二用户终端根据该第二码字序列的指示信息确定该第二用户终端的该第二码字序列，并在时域为该第二用户终端对应的上行参考信号符号组的时间单元，频域为该第二用户终端对应的上行参考信号子载波组的子载波上利用该第二码字序列向基站发送该第二用户终端的上行参考信号。
S1612、基站在时域为该第一用户终端对应的上行参考信号符号组，频域为该第一用户终端对应的上行参考信号子载波组上接收第一用户终端利用该第一码字序列发送的该第一用户终端的上行参考信号，在时域为该第二用户终端对应的上行参考信号符号组的时间单元，频域为该第二用户终端对应的上行参考信号子载波组的子载波上接收第二用户终端利用该第二码字序列发送的该第二用户终端的上行参考信号。
本发明实施例四的上行参考信号传输方法，通过具体的实例对上述实施例进行说明，其有益效果与上述实施例类似，在此不再赘述。
本发明实施例五还提供一种用户终端。本实施例提供的用户终端可用于执行上述实施例一或实施例二中任一所述的上行参考信号传输方法。图17为本发明实施例五提供的用户终端的结构示意图。如图17所示，该用户终端 1700，可包括：确定模块1701和发送模块1702。
确定模块1701，用于根据第一高层信令确定上行参考信号位置，该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元，根据第二高层信令或接收到的物理信道的第一控制信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组；该第二高层信令或该第一控制信息中包括：该用户终端对应的上行参考信号符号组的指示信息。
发送模块1702，用于在该用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
可选的，若该每个上行参考信号符号组包括多个时间单元，该多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
可选的，该时间单元为预设时间单元外的时间单元；该预设时间单元为1ms的TTI对应的上行参考信号的时间单元。
可选的，该时间单元包括预设时间间隔中的时间单元；该预设时间间隔包括保护时间。
可选的，该上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波。
确定模块1701，还用于根据该第二高层信令或该第一控制信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组和该用户终端对应的一个上行参考信号子载波组；该第二高层信令或该第一控制信息还包括：该用户终端对应的上行参考信号子载波组的指示信息。
发送模块1702，还用于在时域为该用户终端对应的一个上行参考信号符号组的时间单元，且，频域为该用户终端对应的一个上行信号子载波组的子载波上发送该上行参考信号。
可选的，该至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
可选的，确定模块1701，还用于根据该第一高层信令确定上行参考信号位置信息，该上行参考信号位置信息包括频域位置信息，在预设时隙或子帧中，根据该频域位置信息确定该上行参考信号位置。
可选的，确定模块1701，还用于根据该第一高层信令确定上行参考信号 位置信息，该上行参考信号位置信息包括时域位置信息和频域位置信息，根据该频域位置信息和该时域位置信息确定该上行参考信号位置。
可选的，确定模块1701，还用于根据第三高层信令或接收到的物理信道的第二控制信息，确定该用户终端对应的至少一个码字序列；该第三高层信令或该第二控制信息中包括该用户终端对应的码字序列的指示信息；
发送模块1702，还用于在该用户终端对应的一个上行参考信号符号组的时间单元上利用该用户终端对应的至少一个码字序列发送该上行参考信号。
可选的，该时间单元为SC-FDMA符号对应的时间单元，或，OFDMA符号对应的时间单元。
本发明实施例五提供的用户终端，可执行上述实施例一或实施例二中任一实施例所述的上行参考信号传输方法，其有益效果及实现过程可参照上述实施例中的描述，在此不再赘述。
本发明实施例六还提供一种基站。该实施例六的基站可执行上述实施例三中所述的上行参考信号的传输方法。图18为本发明实施例六提供的基站的结构示意图。如图18所示，该基站1800，包括：发送模块1801和接收模块1802。
发送模块1801，用于向用户终端发送第一高层信令，向该用户终端发送第二高层信令或通过物理信道发送第一控制信息；其中，该第一高层信令用于使得该用户终端确定上行参考信号位置，该上行参考信号位置包括至少一个上行参考信号符号组，每个上行参考信号符号组包括至少一个时间单元；该第二高层信令或该第一控制信息包括：该用户终端对应的上行参考信号符号组的指示信息；该用户终端对应的上行参考信号符号组的指示信息，用于指示该用户终端在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组。
接收模块1802，还用于接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
可选的，若该每个上行参考信号符号组包括多个时间单元，该多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
可选的，该时间单元为预设时间单元外的时间单元；该预设时间单元为1ms的TTI对应的上行参考信号的时间单元。
可选的，该时间单元为预设时间间隔中的时间单元；该预设时间间隔包括GP。
可选的，该上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波。
该第二高层信令或该第一控制信息还包括：该用户终端对应的上行参考信号子载波组的指示信息；该用户终端对应的上行参考信号子载波组的指示信息，用于指示该用户终端在该上行参考信号位置上确定该用户终端对应的一个上行参考信号子载波组。
接收模块1802，还用于接收该用户终端在时域为该用户终端对应的一个上行参考信号符号组的时间单元，且，频域为该用户终端对应的一个上行信号子载波组的子载波上发送的该上行参考信号。
可选的，该至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
可选的，该第一高层信令包括上行参考信号位置信息；其中，该上行参考信号位置信息包括：频域位置信息。
该频域位置信息，用于使得该用户终端在预设时隙或子帧中确定该上行参考信号位置。
可选的，该第一高层信令包括上行参考信号位置信息；其中，该上行参考信号位置信息包括：时域位置信息与频域位置信息。
该时域位置信息与频域位置信息，用于使得该用户终端确定该上行参考信号位置。
可选的，发送模块1801，还用于通过X2接口向其他基站发送该上行参考信号位置信息；该上行参考信号位置信息，用于使该其他基站的上行参考信号位置与该基站的该上行参考信号位置不同。
可选的，发送模块1801，还用于向该用户终端发送第三高层信令，或者，通过物理信道向该用户终端发送第二控制信息；该第三高层信令或该第二控制信息包括：该用户终端对应的码字序列的指示信息；该用户终端对应的码字序列的指示信息用于指示该用户终端确定该用户终端对应的至少一个码字序列。
接收模块1802，还用于接收该用户终端在该用户终端对应的一个上行参 考信号符号组的时间单元上利用该用户终端对应的至少一个码字序列发送的该上行参考信号。
可选的，该时间单元为SC-FDMA符号对应的时间单元，或，OFDMA符号对应的时间单元。
本发明实施例六提供的基站，可执行上述实施例三所述的上行参考信号传输方法，其有益效果及实现过程可参照上述实施例中的描述，在此不再赘述。
本发明实施例实施例七还提供一种用户终端。图19为本发明实施例七提供的用户终端的结构示意图。如图19所示，该用户终端1900可包括处理器1901和发射机1902。
其中，处理器1901，用于根据第一高层信令确定上行参考信号位置，该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；根据第二高层信令或接收到的物理信道的第一控制信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组；该第二高层信令或该第一控制信息中包括：该用户终端对应的上行参考信号符号组的指示信息。
发射机1902，用于在该用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
可选的，若该每个上行参考信号符号组包括多个时间单元，该多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
可选的，该时间单元为预设时间单元外的时间单元；该预设时间单元为1ms的TTI对应的上行参考信号的时间单元。
可选的，该时间单元包括预设时间间隔中的时间单元；该预设时间间隔包括保护时间。
可选的，该上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波。
处理器1901，还用于根据该第二高层信令或该第一控制信息，在该上行参考信号位置上确定该用户终端对应的一个上行参考信号符号组和该用户终端对应的一个上行参考信号子载波组；该第二高层信令或该第一控制信息还包括：该用户终端对应的上行参考信号子载波组的指示信息。
发射机1902，还用于在时域为该用户终端对应的一个上行参考信号符号组的时间单元，且，频域为该用户终端对应的一个上行信号子载波组的子载波上发送该上行参考信号。
可选的，该至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
可选的，处理器1901，还用于根据该第一高层信令，确定上行参考信号位置信息；其中，该上行参考信号位置信息包括频域位置信息；在预设时隙或子帧中，根据该频域位置信息确定该上行参考信号位置。
可选的，处理器1901，还用于根据该第一高层信令，确定上行参考信号位置信息；其中，该上行参考信号位置信息包括：时域位置信息和频域位置信息；根据该频域位置信息和该时域位置信息确定该上行参考信号位置。
可选的，处理器1901，还用于根据第三高层信令或接收到的物理信道的第二控制信息，确定该用户终端对应的至少一个码字序列；该第三高层信令或该第二控制信息中包括该用户终端对应的码字序列的指示信息。
发射机1902，还用于在该用户终端对应的一个上行参考信号符号组的时间单元上利用该用户终端对应的至少一个码字序列发送该上行参考信号。
可选的，该时间单元为SC-FDMA符号对应的时间单元，或，OFDMA符号对应的时间单元。
本发明实施例七提供的基站，可执行上述实施例一或实施例二所述的行参考信号传输方法，其有益效果及实现过程可参照上述实施例中的描述，在此不再赘述。
本发明实施例八还提供一种基站。图20为本发明实施例八提供的基站的结构示意图。如图20所示，基站2000包括：发射机2001和接收机2002。
其中，发射机2001，用于向用户终端发送第一高层信令，向该用户终端发送第二高层信令或通过物理信道发送第一控制信息；该第一高层信令用于使得该用户终端确定上行参考信号位置；该上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；该第二高层信令或该第一控制信息包括：该用户终端对应的上行参考信号符号组的指示信息；该用户终端对应的上行参考信号符号组的指示信息，用于指示该用户终端在所述上行参考信号位置上确定该用户终端对应的一个 上行参考信号符号组。
接收机2002，还用于接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
可选的，若该每个上行参考信号符号组包括多个时间单元，该多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
可选的，该时间单元为预设时间单元外的时间单元；该预设时间单元为1ms的TTI对应的上行参考信号的时间单元。
可选的，该时间单元为预设时间间隔中的时间单元；该预设时间间隔包括GP。
可选的，该上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波。
该第二高层信令或该第一控制信息还包括：该用户终端对应的上行参考信号子载波组的指示信息；该用户终端对应的上行参考信号子载波组的指示信息，用于指示该用户终端在该上行参考信号位置上确定该用户终端对应的一个上行参考信号子载波组。
接收机2002，还用于接收该用户终端在时域为该用户终端对应的一个上行参考信号符号组的时间单元，且，频域为该用户终端对应的一个上行信号子载波组的子载波上发送的该上行参考信号。
可选的，该至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
可选的，该第一高层信令包括上行参考信号位置信息；其中，该上行参考信号位置信息包括：频域位置信息。
该频域位置信息，用于使得该用户终端在预设时隙或子帧中确定该上行参考信号位置。
可选的，该第一高层信令包括上行参考信号位置信息；其中，该上行参考信号位置信息包括：时域位置信息与频域位置信息；
该时域位置信息与频域位置信息，用于使得该用户终端确定该上行参考信号位置。
可选的，发射机2001，还用于通过X2接口向其他基站发送该上行参考信号位置信息；该上行参考信号位置信息，用于使该其他基站的上行参考信 号位置与该基站的该上行参考信号位置不同。
可选的，发射机2001，还用于向该用户终端发送第三高层信令，或者，通过物理信道向该用户终端发送第二控制信息；该第三高层信令或该第二控制信息包括：该用户终端对应的码字序列的指示信息；该用户终端对应的码字序列的指示信息用于指示该用户终端确定该用户终端对应的至少一个码字序列。
接收机2002，还用于接收该用户终端在该用户终端对应的一个上行参考信号符号组的时间单元上利用该用户终端对应的至少一个码字序列发送的该上行参考信号。
可选的，该时间单元为SC-FDMA符号对应的时间单元，或，OFDMA符号对应的时间单元。
本发明实施例八提供的基站，可执行上述实施例三所述的上行参考信号传输方法，其有益效果及实现过程可参照上述实施例中的描述，在此不再赘述。
本发明实施例九还提供一种网络系统。图21为本发明实施例九提供的网络系统的结构示意图。如图21所示，该网络系统2100可包括至少一个基站2101和该至少一个基站中每个基站所在小区的至少一个用户终端2102。
该至少一个基站2101中每个基站可为上述实施例六或实施例八所述的基站，可执行上述实施例三提供的上行参考信号传输方法，每个基站的具体结构可参照上述实施例六或实施例八的基站，在此不再赘述。该至少一个用户终端2102中每个用户终端可为上述实施例五或实施例七所述的用户终端，可执行上述实施例一或实施二所述的上行参考信号传输方法，每个用户终端的具体结构可参照上述实施例五或实施例七的基站，在此不再赘述。该至少一个基站2101中每个基可与该每个基站所在小区的至少一个用户终端2102，可共同执行上述实施例四所述的上行参考信号传输方法。若该网络系统2100包括至少两个基站2101，该至少两个基站2101中每两个基站可通过X2接口传输消息。
本发明实施例九提供的网络系统，基站和用户终端可执行上述实施例提供的上行参考信号传输方法，其有益效果与上述实施例类似，在此不再赘述。
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 (63)

  1. 一种上行参考信号传输方法，其特征在于，包括：
    用户终端根据第一高层信令确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；
    所述用户终端根据第二高层信令或接收到的物理信道的第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；所述第二高层信令或所述第一控制信息中包括：所述用户终端对应的上行参考信号符号组的指示信息；
    所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
  2. 根据权利要求1所述的方法，其特征在于，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
  3. 根据权利要求1或2所述的方法，其特征在于，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
  4. 根据权利要求1或2所述的方法，其特征在于，所述时间单元包括预设时间间隔中的时间单元；所述预设时间间隔包括保护时间。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
    所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号之前，所述方法还包括：
    所述用户终端根据所述第二高层信令或所述第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组和所述用户终端对应的一个上行参考信号子载波组；所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；
    所述用户终端在所述用户终端对应的上行参考信号符号组的时间单元上发送上行参考信号包括：
    所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送所述上行参考信号。
  6. 根据权利要求5所述的方法，其特征在于，所述至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述用户终端根据第一高层信令确定上行参考信号位置包括：
    所述用户终端根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
    所述用户终端在预设时隙或子帧中，根据所述频域位置信息确定所述上行参考信号位置。
  8. 根据权利要求1-6所述的方法，其特征在于，所述用户终端根据第一高层信令确定上行参考信号位置包括：
    所述用户终端根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息和频域位置信息；
    所述用户终端根据所述频域位置信息和所述时域位置信息确定所述上行参考信号位置。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号之前，所述方法还包括：
    所述用户终端根据第三高层信令或接收到的物理信道的第二控制信息，确定所述用户终端对应的至少一个码字序列；所述第三高层信令或所述第二控制信息中包括所述用户终端对应的码字序列的指示信息；
    对应的，所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号，包括：
    所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送所述上行参考信号。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
  11. 一种上行参考信号传输方法，其特征在于，包括：
    基站向用户终端发送第一高层信令；所述第一高层信令用于使得所述用户终端确定上行参考信号位置；所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；
    所述基站向所述用户终端发送第二高层信令或通过物理信道发送第一控制信息；所述第二高层信令或所述第一控制信息包括：所述用户终端对应的上行参考信号符号组的指示信息；所述用户终端对应的上行参考信号符号组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；
    所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
  12. 根据权利要求11所述的方法，其特征在于，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
  13. 根据权利要求11或12所述的方法，其特征在于，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
  14. 根据权利要求11或12所述的方法，其特征在于，所述时间单元为预设时间间隔中的时间单元；所述预设时间间隔包括保护时间GP。
  15. 根据权利要求11-14中任一项所述的方法，其特征在于，所述上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
    所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；所述用户终端对应的上行参考信号子载波组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号子载波组；
    所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号包括：
    所述基站接收所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载 波组的子载波上发送的所述上行参考信号。
  16. 根据权利要求15所述的方法，其特征在于，所述至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
  17. 根据权利要求11-16中任一项所述的方法，其特征在于，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
    所述频域位置信息，用于使得所述用户终端在预设时隙或子帧中确定所述上行参考信号位置。
  18. 根据权利要求11-16中任一项所述的方法，其特征在于，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息与频域位置信息；
    所述时域位置信息与频域位置信息，用于使得所述用户终端确定所述上行参考信号位置。
  19. 根据权利要求17或18所述的方法，其特征在于，所述方法还包括：
    所述基站通过X2接口向其他基站发送所述上行参考信号位置信息；所述上行参考信号位置信息，用于使所述其他基站的上行参考信号位置与所述基站的所述上行参考信号位置不同。
  20. 根据权利要求11-19中任一项所述的方法，其特征在于，所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号之前，所述方法还包括：
    所述基站向所述用户终端发送第三高层信令，或者，通过物理信道向所述用户终端发送第二控制信息；所述第三高层信令或所述第二控制信息包括：所述用户终端对应的码字序列的指示信息；所述用户终端对应的码字序列的指示信息用于指示所述用户终端确定所述用户终端对应的至少一个码字序列；
    所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号，包括：
    所述基站接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送的所述上行参考信号。
  21. 根据权利要求11-20中任一项所述的方法，其特征在于，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
  22. 一种用户终端，其特征在于，包括：
    确定模块，用于根据第一高层信令确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元，根据第二高层信令或接收到的物理信道的第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；所述第二高层信令或所述第一控制信息中包括：所述用户终端对应的上行参考信号符号组的指示信息；
    发送模块，用于在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
  23. 根据权利要求22所述用户终端，其特征在于，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
  24. 根据权利要求22或23所述的用户终端，其特征在于，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
  25. 根据权利要求22或23所述的用户终端，其特征在于，所述时间单元包括预设时间间隔中的时间单元；所述预设时间间隔包括保护时间。
  26. 根据权利要求22-25中任一项所述的用户终端，其特征在于，所述上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
    所述确定模块，还用于根据所述第二高层信令或所述第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组和所述用户终端对应的一个上行参考信号子载波组；所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；
    所述发送模块，还用于在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组 的子载波上发送所述上行参考信号。
  27. 根据权利要求26所述的用户终端，其特征在于，所述至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
  28. 根据权利要求22-27中任一项所述的用户终端，其特征在于，
    所述确定模块，还用于根据所述第一高层信令确定上行参考信号位置信息，所述上行参考信号位置信息包括频域位置信息，在预设时隙或子帧中，根据所述频域位置信息确定所述上行参考信号位置。
  29. 根据权利要求22-27中任一项所述的用户终端，其特征在于，
    所述确定模块，还用于根据所述第一高层信令确定上行参考信号位置信息，所述上行参考信号位置信息包括时域位置信息和频域位置信息，根据所述频域位置信息和所述时域位置信息确定所述上行参考信号位置。
  30. 根据权利要求22-29中任一项所述的用户终端，其特征在于，
    所述确定模块，还用于根据第三高层信令或接收到的物理信道的第二控制信息，确定所述用户终端对应的至少一个码字序列；所述第三高层信令或所述第二控制信息中包括所述用户终端对应的码字序列的指示信息；
    所述发送模块，还用于在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送所述上行参考信号。
  31. 根据权利要求22-30中任一项所述的用户终端，其特征在于，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
  32. 一种基站，其特征在于，包括：
    发送模块，用于向用户终端发送第一高层信令，向所述用户终端发送第二高层信令或通过物理信道发送第一控制信息；其中，所述第一高层信令用于使得所述用户终端确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，每个上行参考信号符号组包括至少一个时间单元；所述第二高层信令或所述第一控制信息包括：所述用户终端对应的上行参考信号符号组的指示信息；所述用户终端对应的上行参考信号符号组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；
    接收模块，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
  33. 根据权利要求32所述的基站，其特征在于，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
  34. 根据权利要求32或33所述的基站，其特征在于，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
  35. 根据权利要求32或33所述的基站，其特征在于，所述时间单元为预设时间间隔中的时间单元；所述预设时间间隔包括保护时间GP。
  36. 根据权利要求32-35中任一项所述的基站，其特征在于，所述上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
    所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；所述用户终端对应的上行参考信号子载波组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号子载波组；
    所述接收模块，还用于接收所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送的所述上行参考信号。
  37. 根据权利要求36所述的基站，其特征在于，所述至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
  38. 根据权利要求32-37中任一项所述的基站，其特征在于，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
    所述频域位置信息，用于使得所述用户终端在预设时隙或子帧中确定所述上行参考信号位置。
  39. 根据权利要求32-37中任一项所述的基站，其特征在于，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息与频域位置信息；
    所述时域位置信息与频域位置信息，用于使得所述用户终端确定所述上行参考信号位置。
  40. 根据权利要求38或39所述的基站，其特征在于，
    所述发送模块，还用于通过X2接口向其他基站发送所述上行参考信号位置信息；所述上行参考信号位置信息，用于使所述其他基站的上行参考信号位置与所述基站的所述上行参考信号位置不同。
  41. 根据权利要求32-40中任一项所述的基站，其特征在于，
    所述发送模块，还用于向所述用户终端发送第三高层信令，或者，通过物理信道向所述用户终端发送第二控制信息；所述第三高层信令或所述第二控制信息包括：所述用户终端对应的码字序列的指示信息；所述用户终端对应的码字序列的指示信息用于指示所述用户终端确定所述用户终端对应的至少一个码字序列；
    所述接收模块，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送的所述上行参考信号。
  42. 根据权利要求32-41中任一项所述的基站，其特征在于，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
  43. 一种用户终端，其特征在于，包括：处理器和发射机；
    其中，所述处理器，用于根据第一高层信令确定上行参考信号位置，所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；根据第二高层信令或接收到的物理信道的第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；所述第二高层信令或所述第一控制信息中包括：所述用户终端对应的上行参考信号符号组的指示信息；
    所述发射机，用于在所述用户终端对应的一个上行参考信号符号组的时间单元上发送上行参考信号。
  44. 根据权利要求43所述的用户终端，其特征在于，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个时间单元的时间间隔。
  45. 根据权利要求43或44所述的用户终端，其特征在于，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
  46. 根据权利要求43或44所述的用户终端，其特征在于，所述时间单元包括预设时间间隔中的时间单元；所述预设时间间隔包括保护时间。
  47. 根据权利要求43-46中任一项所述的用户终端，其特征在于，所述上行参考信号位置还包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
    所述处理器，还用于根据所述第二高层信令或所述第一控制信息，在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组和所述用户终端对应的一个上行参考信号子载波组；所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；
    所述发射机，还用于在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送所述上行参考信号。
  48. 根据权利要求47所述的用户终端，其特征在于，所述至少十二个上行子载波中每两个子载波间存在至少一个子载波的频率间隔。
  49. 根据权利要求43-48中任一项所述的用户终端，其特征在于，
    所述处理器，还用于根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括频域位置信息；在预设时隙或子帧中，根据所述频域位置信息确定所述上行参考信号位置。
  50. 根据权利要求43-48中任一项所述的用户终端，其特征在于，
    所述处理器，还用于根据所述第一高层信令，确定上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息和频域位置信息；根据所述频域位置信息和所述时域位置信息确定所述上行参考信号位置。
  51. 根据权利要求43-50中任一项所述的用户终端，其特征在于，
    所述处理器，还用于根据第三高层信令或接收到的物理信道的第二控制信息，确定所述用户终端对应的至少一个码字序列；所述第三高层信令或所述第二控制信息中包括所述用户终端对应的码字序列的指示信息；
    所述发射机，还用于在所述用户终端对应的一个上行参考信号符号组的 时间单元上利用所述用户终端对应的至少一个码字序列发送所述上行参考信号。
  52. 根据权利要求43-51中任一项所述的用户终端，其特征在于，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
  53. 一种基站，其特征在于，包括：发射机和接收机；
    其中，所述发射机，用于向用户终端发送第一高层信令，向所述用户终端发送第二高层信令或通过物理信道发送第一控制信息；所述第一高层信令用于使得所述用户终端确定上行参考信号位置；所述上行参考信号位置包括至少一个上行参考信号符号组，其中，每个上行参考信号符号组包括至少一个时间单元；所述第二高层信令或所述第一控制信息包括：所述用户终端对应的上行参考信号符号组的指示信息；所述用户终端对应的上行参考信号符号组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号符号组；
    所述接收机，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上发送的上行参考信号。
  54. 根据权利要求53所述的基站，其特征在于，若所述每个上行参考信号符号组包括多个时间单元，所述多个时间单元中每两个时间单元间存在至少一个符号的时间间隔。
  55. 根据权利要求53或54所述的基站，其特征在于，所述时间单元为预设时间单元外的时间单元；所述预设时间单元为1ms的传输时间间隔TTI对应的上行参考信号的时间单元。
  56. 根据权利要求53或54所述的基站，其特征在于，所述时间单元为预设时间间隔中的时间单元；所述预设时间间隔包括保护时间GP。
  57. 根据权利要求53-56中任一项所述的基站，其特征在于，所述上行参考信号位置包括：至少一个上行参考信号子载波组；其中，每个上行参考信号子载波组包括至少十二个上行子载波；
    所述第二高层信令或所述第一控制信息还包括：所述用户终端对应的上行参考信号子载波组的指示信息；所述用户终端对应的上行参考信号子载波组的指示信息，用于指示所述用户终端在所述上行参考信号位置上确定所述用户终端对应的一个上行参考信号子载波组；
    所述接收机，还用于接收所述用户终端在时域为所述用户终端对应的一个上行参考信号符号组的时间单元，且，频域为所述用户终端对应的一个上行信号子载波组的子载波上发送的所述上行参考信号。
  58. 根据权利要求57所述的基站，其特征在于，所述至少十二个子载波中每两个子载波间存在至少一个子载波的频率间隔。
  59. 根据权利要求53-58中任一项所述的基站，其特征在于，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：频域位置信息；
    所述频域位置信息，用于使得所述用户终端在预设时隙或子帧中确定所述上行参考信号位置。
  60. 根据权利要求53-58中任一项所述的基站，其特征在于，所述第一高层信令包括上行参考信号位置信息；其中，所述上行参考信号位置信息包括：时域位置信息与频域位置信息；
    所述时域位置信息与频域位置信息，用于使得所述用户终端确定所述上行参考信号位置。
  61. 根据权利要求59或60所述的基站，其特征在于，
    所述发射机，还用于通过X2接口向其他基站发送所述上行参考信号位置信息；所述上行参考信号位置信息，用于使所述其他基站的上行参考信号位置与所述基站的所述上行参考信号位置不同。
  62. 根据权利要求53-61中任一项所述的基站，其特征在于，
    所述发射机，还用于向所述用户终端发送第三高层信令，或者，通过物理信道向所述用户终端发送第二控制信息；所述第三高层信令或所述第二控制信息包括：所述用户终端对应的码字序列的指示信息；所述用户终端对应的码字序列的指示信息用于指示所述用户终端确定所述用户终端对应的至少一个码字序列；
    所述接收机，还用于接收所述用户终端在所述用户终端对应的一个上行参考信号符号组的时间单元上利用所述用户终端对应的至少一个码字序列发送的所述上行参考信号。
  63. 根据权利要求53-62中任一项所述的基站，其特征在于，所述时间单元为单载波频分多址SC-FDMA符号对应的时间单元，或，正交频分复用多址OFDMA符号对应的时间单元。
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