WO2018196618A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2018196618A1
WO2018196618A1 PCT/CN2018/082708 CN2018082708W WO2018196618A1 WO 2018196618 A1 WO2018196618 A1 WO 2018196618A1 CN 2018082708 W CN2018082708 W CN 2018082708W WO 2018196618 A1 WO2018196618 A1 WO 2018196618A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
uplink
uplink transmission
data
terminal
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PCT/CN2018/082708
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English (en)
French (fr)
Inventor
张长
秦龙
纪刘榴
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华为技术有限公司
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Publication of WO2018196618A1 publication Critical patent/WO2018196618A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • 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
    • 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

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.
  • the base station sends an uplink grant to the terminal, and instructs the terminal to send the uplink physical resource, including the occupied frequency domain resource, that is, the physical resource block ( Physical resource block, PRB).
  • the terminal After receiving the uplink grant, the terminal sends uplink data to the base station on the allocated PRB.
  • LTE Long Term Evolution
  • Future evolutionary communication systems such as the 5G New Radio (NR) system, will support new scenarios, in addition to the above-described scheduling-based uplink transmission process, and may include non-scheduling-based uplink transmission (Grant-Free, GF).
  • the terminal sends uplink data on a predefined physical resource.
  • the terminal may also need to send uplink signals such as uplink control information. Whether it is based on the transmission of scheduled uplink data or the transmission of uplink data not scheduled, or the transmission of uplink control information, in order to combat the random fading of the wireless channel, when transmitting the uplink signal, it needs to be on the predefined physical resources.
  • a reference signal is inserted to perform channel estimation on the physical resources occupied by the uplink signal. The performance of channel estimation will directly affect the data reception performance, so the design and performance of the reference signal is very important.
  • the uplink of the existing LTE system supports two reference signals: a Demodulation Reference Signal (DM-RS) and a Sounding Reference Signal (SRS).
  • DM-RS Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the terminal since the uplink of the LTE system uses Single Carrier Frequency Division Multiple Access (SC-FDMA), the terminal directly maps the SRS according to the time-frequency resources allocated by the base station to the terminal. Send to the last symbol in a sub-frame.
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the uplink of the 5G NR system will support Orthogonal Frequency Division Multiplexing (OFDM) (multi-carrier technology) and single-carrier technology (SC-FDMA), which is currently not available in 5G NR systems.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA single-carrier technology
  • Embodiments of the present invention provide a communication method and apparatus for implementing uplink signal transmission in an uplink.
  • an embodiment of the present invention provides a communication method, including:
  • the terminal sends the uplink signal to the network device.
  • the embodiment of the present invention has greater flexibility, so that it can better adapt to the multi-carrier technology and single-carrier technology used in the uplink.
  • the scheme for allowing data to be carried in the time domain symbol in which the uplink reference signal is located can effectively utilize the time-frequency resource; in other scenarios (for example, the coverage is limited), the time domain symbol in which the uplink reference signal is located is used. A scheme that carries data is not allowed, and signal distortion can be effectively avoided.
  • the configuration of the uplink transmission indicated by the indication information includes a modulation order of the uplink transmission
  • Determining, by the terminal, whether the time domain symbol in the uplink reference signal is allowed to bear data including:
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the configuration of the uplink transmission indicated by the indication information includes a coding rate of the uplink transmission
  • Determining, by the terminal, whether the time domain symbol in the uplink reference signal is allowed to bear data including:
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the modulation order of the uplink transmission and the coding rate of the uplink transmission are a third possible implementation manner of the first aspect.
  • Determining, by the terminal, whether the time domain symbol in the uplink reference signal is allowed to bear data including:
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the configuration of the uplink transmission indicated by the indication information includes a transmit power of the uplink transmission
  • Determining, by the terminal, whether the time domain symbol in the uplink reference signal is allowed to bear data including:
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the configuration of the uplink transmission indicated by the indication information includes an uplink reference signal of the uplink transmission
  • Determining, by the terminal, whether data to be carried in the time domain symbol in which the uplink reference signal is located including:
  • the terminal does not allow data to be carried in the time domain symbol in which the uplink reference signal is located by default.
  • the data is not allowed to be carried in the time domain symbol, including:
  • the part of the time domain symbol is used by the uplink reference signal, and the frequency domain resource not occupied by the uplink reference signal in the time domain symbol is not allowed to bear data.
  • a configuration of uplink transmission may include a waveform of the uplink transmission
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to carry data. .
  • the configuration of the uplink transmission may include the waveform of the uplink transmission and the first configuration information, where the first configuration information includes an MCS index value of the uplink transmission and a transmission power of the uplink transmission.
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is allowed to bear data; the first configuration information conforms to the first
  • the preset condition may be that the transmit power of the uplink transmission is less than the first threshold and/or the MCS index value of the uplink transmission is greater than or equal to the second threshold.
  • the first threshold and the second threshold may be set by a person skilled in the art according to actual conditions and experience, and are not specifically limited.
  • the configuration of the uplink transmission may include the waveform of the uplink transmission and the first configuration information, where the first configuration information includes an MCS index value of the uplink transmission and a transmission power of the uplink transmission.
  • the terminal determines a time domain in which the uplink reference signal is located.
  • the data may not be carried in the symbol; the first configuration information may be the second preset condition: the uplink transmission power is greater than or equal to the third threshold and/or the uplink transmission MCS index value is less than the fourth threshold.
  • the third threshold and the fourth threshold may be set by a person skilled in the art according to actual conditions and experience, and are not specifically limited.
  • an embodiment of the present invention provides a communication method, where the method includes:
  • the network device sends the configuration information to the terminal, where the configuration information is used to indicate whether the data is allowed to be carried in the time domain symbol where the uplink reference signal is located;
  • the network device receives the uplink reference signal sent by the terminal.
  • the configuration information sent by the network device to the terminal may indicate whether the data is allowed to be carried in the time domain symbol in which the uplink reference signal is located. Therefore, only the uplink reference signal is sent on a time domain symbol according to the agreement in the LTE system. It is said that the embodiment of the present invention has greater flexibility, so that it can better adapt to the multi-carrier technology and single-carrier technology adopted by the uplink.
  • the scheme for allowing data to be carried in the time domain symbol in which the uplink reference signal is located can effectively utilize the time-frequency resource; in other scenarios (for example, the coverage is limited), the time domain symbol in which the uplink reference signal is located is used. A scheme that carries data is not allowed, and signal distortion can be effectively avoided.
  • the configuration information includes any one or any combination of a modulation order of an uplink transmission, an encoding rate of an uplink transmission, and a transmission power of an uplink transmission. .
  • the configuration information includes whether the uplink reference signal supports frequency multiplexing with data
  • the method further includes:
  • the network device determines whether the uplink reference signal supports frequency multiplexing with data.
  • the network device determines whether the uplink reference signal supports frequency multiplexing with data, including:
  • the network device determines that the uplink reference signal does not support frequency multiplexing with the data.
  • the network device determines whether the uplink reference signal supports frequency multiplexing with data, including:
  • the network device determines that the uplink reference signal of the uplink transmission does not support frequency multiplexing with the data.
  • the network device determines that the uplink reference signal is not supported. Frequency reuse with data.
  • an embodiment of the present invention provides a terminal, where the terminal includes: a transmitter, a receiver, and a processor;
  • the receiver is configured to receive indication information from a network device, where the indication information is used to indicate a configuration of an uplink transmission;
  • the processor is configured to determine, according to the indication information, whether the time domain symbol in the uplink reference signal is allowed to bear data, and generate an uplink signal to be transmitted;
  • the transmitter is configured to send the uplink signal to the network device.
  • the configuration of the uplink transmission indicated by the indication information includes a modulation order of the uplink transmission
  • the processor is specifically configured to:
  • the configuration of the uplink transmission indicated by the indication information includes a coding rate of the uplink transmission
  • the processor is specifically configured to:
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the modulation order of the uplink transmission and the coding rate of the uplink transmission are a third possible implementation manner of the third aspect.
  • the processor is specifically configured to:
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the configuration of the uplink transmission indicated by the indication information includes a transmit power of the uplink transmission
  • the processor is specifically configured to:
  • the transmit power of the uplink transmission is greater than the third threshold, it is determined that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the configuration of the uplink transmission indicated by the indication information includes an uplink reference signal of the uplink transmission
  • the processor is specifically configured to:
  • the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the data is not allowed to be carried in the time domain symbol, including:
  • the part of the time domain symbol is used by the uplink reference signal, and the frequency domain resource not occupied by the uplink reference signal in the time domain symbol is not allowed to bear data.
  • an embodiment of the present invention provides a network device, where the network device includes: a transmitter, a receiver, and a processor; and the processor performs, in conjunction with the transmitter and the receiver,:
  • the configuration information includes any one or any combination of a modulation order of an uplink transmission, an encoding rate of an uplink transmission, and a transmission power of an uplink transmission. .
  • the configuration information includes whether the uplink reference signal supports frequency multiplexing with data
  • the processor is further configured to: before the transmitter sends the configuration information:
  • the processor is specifically configured to:
  • the processor is specifically configured to:
  • the signal to interference and noise ratio SINR of the terminal is less than the fifth threshold, determining that the uplink reference signal of the uplink transmission does not support frequency multiplexing with the data.
  • an embodiment of the present invention further provides an apparatus, where the apparatus includes various functional modules, such as a sending module, a receiving module, a processing module, and the like, for performing the foregoing method steps.
  • the device can be a terminal, a network device, or the like.
  • an embodiment of the present invention further provides an apparatus, where the apparatus includes a processor and a memory, where the memory is used to store a software program, and the processor is configured to read a software program stored in the memory and implement any of the foregoing A communication method provided by a design.
  • the device can be a terminal, a network device, or the like.
  • an embodiment of the present invention further provides a computer storage medium, where the software program stores a software program, and the software program can implement communication provided by any one of the above designs when being read and executed by one or more processors. method.
  • an embodiment of the present invention further provides a computer program product comprising instructions, when executed on a computer, causing the computer to perform the communication method provided by any one of the above designs.
  • the terminal receives the indication information from the network device, where the indication information is used to indicate the configuration of the uplink transmission, and the terminal determines, according to the indication information, whether the time domain symbol in the uplink reference signal is allowed to bear data, and generates An uplink signal to be transmitted, and transmitting the uplink signal to the network device. It can be seen that whether the bearer data is allowed in the time domain symbol in which the uplink reference signal is located in the embodiment of the present invention can be determined by the terminal according to the indication information, so that the uplink in the LTE system is only on a time domain symbol according to the convention.
  • the embodiment of the present invention has greater flexibility, so that it can better adapt to the multi-carrier technology and single-carrier technology used in the uplink.
  • the scheme for allowing data to be carried in the time domain symbol in which the uplink reference signal is located can effectively utilize the time-frequency resource; in other scenarios (for example, the coverage is limited), the time domain symbol in which the uplink reference signal is located is used.
  • a scheme that carries data is not allowed, and signal distortion can be effectively avoided.
  • FIG. 1 is a schematic structural diagram of a system applicable to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for transmitting an uplink reference signal according to Embodiment 1 of the present invention
  • FIG. 3a is a schematic diagram of time-frequency resources occupied by an uplink reference signal
  • 3b is a schematic diagram of a time-frequency resource when an uplink reference signal and a data signal are multiplexed on the same symbol;
  • 3c is a schematic diagram of a time-frequency resource when the uplink reference signal and the data signal are not multiplexed on the same symbol;
  • 3d and 3e are schematic diagrams of two other time-frequency resources when the uplink reference signal and the data signal are not multiplexed on the same symbol;
  • FIG. 4 is a schematic flowchart of a method for transmitting an uplink reference signal according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • the system architecture includes a network device 101, one or more terminals, such as the first terminal 1021, the second terminal 1022, and the third terminal 1023 shown in FIG. 1.
  • the network device 101 can perform information transmission with the first terminal 1021, the second terminal 1022, and the third terminal 1023 through the network. Specifically, the first terminal 1021, the second terminal 1022, and the third terminal 1023 can send uplink to the network device 101. Reference signal.
  • the network device may be a base station (BS).
  • a base station device also referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functionality.
  • a device providing a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (BSC), and the device providing the base station function in the 3G network includes a Node B (NodeB) and the wireless device.
  • BTS base transceiver station
  • BSC base station controller
  • NodeB Node B
  • a radio network controller the device providing the base station function in the 4G network includes an evolved NodeB (eNB), and the device providing the base station function in the 5G NR network includes a new wireless node B, a centralized unit (Centralized Units, CUs), distributed units and new wireless controllers.
  • a device that provides a base station function is an access point (AP).
  • the terminal can be a device that provides voice and/or data connectivity to the user, including wired terminals and wireless terminals.
  • the wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to a wireless modem, and a mobile terminal that communicates with one or more core networks via a wireless access network.
  • the wireless terminal can be a mobile phone, a computer, a tablet, a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device, and an e-book reader (e). -book reader)etc.
  • the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • the wireless terminal can be part of a mobile station, an access point, or a user equipment (UE).
  • UE user equipment
  • the communication system applicable to the above system architecture includes but is not limited to: Code Division Multiple Access (CDMA) IS-95, Code Division Multiple Access (CDMA) 2000, Time Division Synchronous Code Division Multiple Access (Time) Division-Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Duplexing-Long Term Evolution (TDD LTE), Frequency Division Dual Frequency Division Duplexing-Long Term Evolution (FDD LTE), Long Term Evolution-Advanced (LTE-advanced), and various wireless communication systems (for example, 5G NR systems) that are evolving in the future.
  • CDMA Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TDD LTE Time Division Duplexing-Long Term Evolution
  • FDD LTE Frequency Division Dual Frequency Division Duplexing-Long Term Evolution
  • the uplink of the 5G NR system can support multi-carrier technology and single-carrier technology.
  • uplink transmission can use OFDM waveforms (including Cyclic prefix-Orthogonal Frequency Division Multiplexing (Cyclic prefix-Orthogonal Frequency Division Multiplexing).
  • one possible implementation manner of transmitting the uplink reference signal is to directly transmit the reference signal by using the LTE uplink transmission reference signal in the prior art, however, due to the LTE system
  • the uplink transmits only the uplink reference signal on a time domain symbol according to the agreement, and the transmission mode is too single, which may cause waste of part of the time-frequency resources.
  • CP-OFDM is used for uplink in the 5G NR system
  • a more flexible resource mapping method can be adopted. Therefore, another possible implementation manner of transmitting the uplink reference signal is to repeat the reference signal and the data signal in the same time domain symbol.
  • the use of the frequency division multiplexing method thereby effectively improving resource utilization, wherein the data signal can be carried on a physical uplink shared channel (PUSCH) and an uplink uplink control channel (PUCCH). information.
  • PUSCH physical uplink shared channel
  • PUCCH uplink uplink control channel
  • the SC-FDMA waveform can also be used for uplink in the 5G NR system, the SC-FDMA waveform has a lower Peak to Average Power Ratio (PAPR) than CP-OFDM.
  • PAPR Peak to Average Power Ratio
  • the embodiment of the present invention provides a communication method, where the terminal receives the indication information from the network device for indicating the configuration of the uplink transmission, and determines, according to the indication information, whether the time domain symbol in which the uplink reference signal is located is The data is allowed to be carried, and the uplink signal to be transmitted is generated and sent to the network device. It can be seen that whether the bearer data is allowed in the time domain symbol in which the uplink reference signal is located in the embodiment of the present invention can be determined by the terminal according to the indication information, so that the uplink in the LTE system is only on a time domain symbol according to the convention.
  • the embodiment of the present invention has greater flexibility, so that it can better adapt to the multi-carrier technology and single-carrier technology used in the uplink.
  • the scheme for allowing data to be carried in the time domain symbol in which the uplink reference signal is located can effectively utilize the time-frequency resource; in other scenarios (for example, the coverage is limited), the time domain symbol in which the uplink reference signal is located is used.
  • a scheme that carries data is not allowed, and signal distortion can be effectively avoided.
  • whether the bearer data is allowed in the time domain symbol in which the uplink reference signal is located may be determined by the terminal according to the indication information sent by the network device.
  • the network device may be explicit or implicit. Way to indicate the terminal.
  • the explicit manner is that the network device determines whether the uplink reference signal of the uplink transmission supports frequency multiplexing with the data.
  • the configuration of the uplink transmission indicated by the indication information sent by the network device includes uplink transmission.
  • the uplink reference signal; the implicit mode refers to the network device configuration terminal related information (such as the waveform of the uplink transmission, the transmission power of the uplink transmission, the modulation order of the uplink transmission, the coding rate of the uplink transmission, etc.), and then sends the related information.
  • the terminal determines, according to the related information, whether the uplink reference signal of the uplink transmission allows the data to be carried. The following is a detailed introduction.
  • Embodiment 1 Implicit method
  • FIG. 2 is a schematic flowchart of a communication method according to Embodiment 1 of the present invention. As shown in FIG. 2, the method includes:
  • Step 201 The network device sends indication information to the terminal, where the indication information is used to indicate a configuration of the uplink transmission.
  • the indication information may include configuration information, where the configuration information is used to indicate whether the data is allowed to be carried in the time domain symbol in which the uplink reference signal is located.
  • the configuration information may include at least one of a waveform of the uplink transmission, a transmission power of the uplink transmission, and a modulation order of the uplink transmission.
  • the network device may send the indication information in multiple manners, and the configuration of the uplink transmission indicated by the indication information includes at least one of a waveform of an uplink transmission, a transmission power of an uplink transmission, and a modulation order of an uplink transmission.
  • the network device may indicate the waveform of the uplink transmission, the transmission power of the uplink transmission, the modulation order of the uplink transmission, and the coding rate of the uplink transmission in the downlink control information (DCI).
  • DCI downlink control information
  • the network device may also configure at least one of a waveform of the uplink transmission, a modulation order of the uplink transmission, and an encoding rate of the uplink transmission by using high layer signaling (eg, Radio Resource Control (RRC) signaling)
  • the network device may also configure a plurality of candidates for the uplink transmission waveform and the uplink transmission power through the high layer signaling, and dynamically indicate which one of the plurality of candidates is used by the terminal through the DCI.
  • RRC Radio Resource Control
  • Step 202 The terminal receives the indication information, determines, according to the indication information, whether the time domain symbol in the uplink reference signal is allowed to bear data, and generates an uplink signal to be transmitted.
  • the configuration of the uplink transmission indicated by the indication information may include at least one of a waveform of the uplink transmission, a transmission power of the uplink transmission, a modulation order of the uplink transmission, and an encoding rate of the uplink transmission
  • the terminal may be configured according to At least one of a waveform of the uplink transmission, a transmission power of the uplink transmission, a modulation order of the uplink transmission, and an encoding rate of the uplink transmission determines whether the data is allowed to be carried in the time domain symbol in which the uplink reference signal is located.
  • the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to bear data; or, when the coding rate of the uplink transmission is smaller than the second
  • the threshold determines that the terminal determines that the time domain symbol in which the uplink reference signal is located is not allowed to carry data; or, when the modulation order of the uplink transmission is less than the first threshold, and the coding rate of the uplink transmission is smaller than the second gate Determining that the terminal does not allow data to be carried in the time domain symbol in which the uplink reference signal is located; or, when the uplink transmission power is greater than the third threshold, the terminal determines when the uplink reference signal is located Data is not allowed to be carried in the domain symbol.
  • the values of the first threshold, the second threshold, and the third threshold may be pre-agreed, or may be sent by the network device to the terminal.
  • Manner 1 The terminal determines whether the time domain symbol in the uplink reference signal is allowed to bear data according to the waveform of the uplink transmission.
  • the uplink transmission can support SC-FDMA waveforms and OFDM waveforms.
  • the SC-FDMA waveform considering that the SC-FDMA waveform has a lower PAPR than the OFDM waveform, the SC-FDMA waveform is more suitable for a low signal to interference and noise (SINR) scenario (such as coverage). Used in restricted scenarios). In this scenario, a higher transmit power is generally required, and the power amplifier also needs higher efficiency. Therefore, if the data signal is transmitted in the time domain symbol in which the uplink reference signal is located, the PAPR may be significantly increased.
  • the uplink transmission is configured as an OFDM waveform
  • data is allowed to be carried in the time domain symbol in which the uplink reference signal is located.
  • the uplink transmission is configured as an SC-FDMA waveform
  • data is not allowed to be carried in the time domain symbol in which the uplink reference signal is located.
  • the terminal may store a waveform and a label (for indicating whether the time domain symbol in the uplink reference signal is allowed to carry data, for example, the label 1 indicates that the data is allowed to be carried, and the label 0 indicates that the data is not allowed to be carried).
  • the OFDM waveform corresponds to the label 1
  • the SC-FDMA waveform corresponds to the label 0; if the terminal determines that the waveform of the uplink transmission indicated by the indication information is an OFDM waveform, it can determine that the time domain symbol in the uplink reference signal is allowed to bear. Data; if the terminal determines that the waveform of the uplink transmission indicated by the indication information is an SC-FDMA waveform, it may be determined that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • Manner 2 The terminal determines, according to the transmit power of the uplink transmission, whether the time domain symbol in which the uplink reference signal is located is allowed to bear data.
  • the PAPR directly affects the power amplifier. Therefore, determining whether the bearer data is allowed in the time domain symbol in which the uplink reference signal is located has a strong feasibility according to the transmit power of the uplink transmission.
  • the terminal may set a threshold A. If the transmit power of the uplink transmission indicated by the indication information is greater than or equal to the threshold A, the terminal may determine that the time domain symbol in which the uplink reference signal is located is not allowed to bear data, and if the indication information indicates the uplink transmission power. If the threshold is less than A, the terminal may determine that the time domain symbol in which the uplink reference signal is located is allowed to bear data.
  • the terminal may store the transmit power and the label (used to indicate whether the bearer data is allowed in the time domain symbol where the uplink reference signal is located, for example, the label 1 indicates that the bearer data is allowed, and the label 0 indicates that the bearer data is not allowed).
  • the relationship table as shown in Table 2, is that the transmit power of the terminal is greater than or equal to the threshold A, corresponding to the label 0, and the transmit power of the terminal is less than the threshold A, corresponding to the label 1.
  • Table 2 Correspondence table between transmit power and configuration information
  • Manner 3 The terminal determines whether the time domain symbol in the uplink reference signal is allowed to bear data according to the modulation order and/or the coding rate of the uplink transmission.
  • the terminal determines the time domain symbol of the uplink reference signal according to the MCS index value. Whether to allow bearer data as an example is explained.
  • the network device In scenarios where coverage is limited, higher transmit power is required and is more sensitive to PAPR. In these scenarios, for the Adaptive Modulation and Coding mechanism, the network device usually configures the terminal with a lower code rate and modulation mode. It can be seen that there is a certain correspondence between MCS and PAPR sensitivity. . Therefore, a threshold B of an MCS index value may be set in the terminal. If the MCS index value of the last transmission indicated by the indication information is greater than or equal to the threshold B, the terminal may determine that the time domain symbol in which the uplink reference signal is located is allowed to bear data.
  • the terminal may determine that the time domain symbol in which the uplink reference signal is located is not allowed to bear data.
  • the threshold B can be set to 5. Accordingly, when the MCS index value is 0-4, the corresponding label 0 (the uplink reference signal is located). The time domain symbol is not allowed to carry data.
  • the MCS index value is 5-31, it corresponds to label 1 (the time domain symbol in the uplink reference signal is allowed to carry data), as shown in Table 3.
  • the threshold B may be defined in advance, or may be broadcasted to the terminal by the system message or the like in the system, or may be configured by the higher layer signaling, such as RRC signaling, to notify the terminal.
  • Manner 4 The terminal determines whether the time domain symbol in the uplink reference signal is allowed to bear data according to any combination of the waveform of the uplink transmission, the transmission power of the uplink transmission, the modulation order of the uplink transmission, and the coding rate.
  • the waveform of the uplink transmission, the transmission power of the uplink transmission, and the MCS index value of the uplink transmission may be used as the determining factors of whether or not the data is allowed to be carried in the time domain symbol in which the uplink reference signal is located.
  • the terminal may also determine whether the bearer data is allowed in the time domain symbol in which the uplink reference signal is located according to any combination of the foregoing. For example, the terminal determines whether the data in the time domain symbol in which the uplink reference signal is located is allowed to bear data according to the combination of the foregoing.
  • the configuration of the uplink transmission indicated by the indication information includes the foregoing three, and specifically, the waveform of the uplink transmission may be set.
  • the time domain symbol in which the uplink reference signal is located is not allowed to carry data. In other cases, the time domain symbol in the uplink reference signal is allowed to bear. data.
  • the configuration of the uplink transmission indicated by the indication information includes a waveform of the uplink transmission and the first configuration information, where the first configuration information includes the transmit power of the uplink transmission and/or the MCS index value of the uplink transmission, and correspondingly, in step 202.
  • the terminal may determine, according to the waveform of the uplink transmission and the first configuration information, whether the time domain symbol in which the uplink reference signal is located is allowed to bear data.
  • the terminal determines that the waveform of the uplink transmission indicated by the indication information is an SC-FDMA waveform, and the first configuration information meets the first preset condition, determining that the uplink reference signal is in the time domain symbol It is allowed to carry data. Otherwise, it is determined that the time domain symbol in which the uplink reference signal is located is not allowed to carry data.
  • the first configuration information that meets the first preset condition may be that the transmit power of the uplink transmission is less than the first threshold and/or the MCS index value of the uplink transmission is greater than or equal to the second threshold.
  • the first threshold and the second threshold may be set by a person skilled in the art according to actual conditions and experience, and are not specifically limited.
  • the time domain symbol in which the uplink reference signal is located is allowed to carry data, that is, the uplink reference signal and the data signal can be in the same time.
  • the domain symbol is multiplexed.
  • the terminal determines that the waveform used by the terminal is an OFDM waveform, and the first configuration information meets the second preset condition, and determines that the time domain symbol in which the uplink reference signal is located is not allowed to carry data. Otherwise, it is determined that the time domain symbol in which the uplink reference signal is located is allowed to carry data.
  • the first configuration information that meets the second preset condition may be that the transmit power of the uplink transmission is greater than or equal to the third threshold and/or the MCS index value of the uplink transmission is less than the fourth threshold.
  • the third threshold and the fourth threshold may be set by a person skilled in the art according to actual conditions and experience, and are not specifically limited.
  • the time domain symbol in which the uplink reference signal is located is not allowed to bear data, that is, the uplink reference signal and the data signal are not in the same time domain symbol.
  • the reference signal and the data signal are always multiplexed on one symbol, and the embodiment of the present invention can effectively avoid the reference that may occur in the prior art. Signal distortion, which leads to inaccurate channel estimation.
  • the different scenarios are carefully divided, and based on the divided scenarios, whether the data is allowed to be carried in the time domain symbols in which the uplink reference signal is located is used as an uplink reference in the multi-carrier technology.
  • Signal transmission provides a more feasible implementation.
  • Step 203 The terminal sends an uplink signal to the network device.
  • the time domain symbols occupied by the uplink reference signal are symbol 2, symbol 5, symbol 9, and symbol 12.
  • the terminal may divide the RE on the frequency domain resource into three groups. That is, the RE numbered 1 is the first RE packet, the RE numbered 2 is the second RE packet, and the RE numbered 3 is the third RE packet. At this time, two REs are separated between two adjacent REs in any RE packet.
  • the configuration information of the uplink reference signal may further include the number of RE packets occupied by the uplink reference signal, and the terminal may generate the P group according to the number of RE packets (for example, P) occupied by the uplink reference signal.
  • the reference signal is transmitted, and the P group reference signals are respectively mapped to REs in any of the three RE packets, wherein the value of P may be 1, 2 or 3.
  • a preset constraint condition may be set between the P group reference signals, wherein the preset constraint condition may be that the P group reference signals are generated based on the same ZC sequence.
  • the generation sequence of the uplink reference signal is the same.
  • the following is a scheme for generating an uplink reference signal based on the same ZC sequence: when multiplexing, it is assumed that the time domain representation of the ZC sequence generating the uplink reference signal is x j (t), where j is the group of uplink reference signals when multiplexing.
  • the downlink reference signal in the LTE system is generated based on the full bandwidth, and the ZC sequence for generating the reference signal is also generated based on the number of REs occupied by the full bandwidth reference signal, when the reference signal occupies part of the bandwidth transmission, the information cannot be satisfied.
  • the RE on one symbol is divided into multiple groups to carry multiple sets of reference signals, and multiple sets of reference signals satisfy presets. The constraints are a good solution to this problem.
  • terminal 1 occupies the first RE packet in symbol 2 to transmit an uplink reference signal
  • terminal 2 occupies the first RE packet and the second RE packet in symbol 2 to transmit an uplink reference signal
  • terminal 2 since terminal 2 is
  • the uplink reference signals on the first RE packet and the second RE packet are generated based on the same ZC sequence, and the uplink reference signal of the terminal 1 on the first RE packet is also generated based on the ZC sequence, so that the terminal 1 is at the first
  • the uplink reference signal on the RE packet and the uplink reference signal of the terminal 2 on the first RE packet have good cross-correlation characteristics, effectively avoiding mutual interference.
  • FIG. 3b is a schematic diagram of a time-frequency resource when the uplink reference signal and the data signal are multiplexed on the same symbol.
  • the RE other than the RE occupied by the reference signal on the first time domain symbol occupied by the uplink reference signal is the RE occupied by the data signal.
  • Figure 3c is a schematic diagram of a time-frequency resource when the reference signal and the data signal are not multiplexed on the same symbol.
  • the RE other than the RE occupied by the reference signal on the second time domain symbol occupied by the uplink reference signal is a blank RE.
  • the reference signal is patterned in two cases where the reference signal and the data signal are multiplexed on the same symbol and the reference signal and the data signal are not multiplexed on the same symbol.
  • the transmit power of the reference signal on the RE may be different in the two cases, that is, the transmit power of the reference signal on the RE is smaller than the case shown in FIG. 3c in the case shown in FIG. 3b.
  • the transmit power of the reference signal on the RE may be different in the two cases, that is, the transmit power of the reference signal on the RE is smaller than the case shown in FIG. 3c in the case shown in FIG. 3b.
  • the patterns of the reference signals may also be different.
  • a pattern of several possible reference signals is shown, as shown in FIG. 3d and FIG. 3e, respectively.
  • the reference signal can also adopt the pattern shown in FIG. 3d, which is not limited.
  • the manner shown in FIG. 3b is used, and when the reference signal and the data signal are not multiplexed on the same symbol, the manner shown in FIG. 3d or FIG. 3e may be employed. .
  • Step 204 The network device receives the uplink signal sent by the terminal, and performs channel estimation, demodulation, and the like according to the configuration.
  • the time domain symbol in the embodiment of the present invention may be an OFDM symbol, or may be an SC-FDMA symbol.
  • the time domain symbol in which the uplink reference signal is located may be pre-agreed by the terminal and the network device. In this case, the terminal may determine the time domain symbol in which the uplink reference signal is located according to a predetermined agreement.
  • Embodiment 2 Display mode
  • FIG. 4 is a schematic flowchart of a communication method according to Embodiment 2 of the present invention. As shown in FIG. 4, the method includes:
  • Step 401 The network device acquires a power headroom of the terminal and/or an SINR of the terminal.
  • Step 402 The network device determines, according to the power headroom and/or the SINR of the terminal, whether the uplink reference signal of the uplink transmission supports frequency multiplexing with the data. For example, when the power headroom of the terminal is less than the fourth threshold, the network device determines that the uplink reference signal does not support frequency multiplexing with data; or, when the signal to interference and noise ratio SINR of the terminal is less than the fifth At the threshold, the network device determines that the uplink reference signal of the uplink transmission does not support frequency multiplexing with the data.
  • the network device determines that the power headroom of the terminal is greater than or equal to a fifth threshold, and/or that the SINR of the terminal is greater than or equal to a sixth threshold, determining that the uplink reference signal of the uplink transmission supports frequency multiplexing with the data; otherwise, It is determined that the uplink reference signal of the uplink transmission does not support frequency multiplexing with the data.
  • the network device may determine, according to the power headroom reported by the terminal, whether the uplink reference signal of the uplink transmission supports frequency multiplexing with the data. For example, the network device can set an offset value, for example, 2 dB, for the power headroom when the uplink reference signal and the data signal are multiplexed on the same symbol, and if the power headroom reported by the terminal is 6 dB, the network device calculates the reference.
  • the network device may set an offset value, for example, 2 dB, for the power headroom when the uplink reference signal and the data signal are multiplexed on the same symbol, and if the power headroom reported by the terminal is 6 dB, the network device calculates the reference.
  • the specific value of the threshold D can be set according to actual conditions.
  • the network device calculates an uplink SINR according to the SRS of the terminal, and determines whether the uplink reference signal of the uplink transmission supports frequency multiplexing with the data according to the measured SINR. For example, a threshold E (sixth threshold) may be set. If the SINR is less than the threshold E, it is determined that the uplink reference signal of the uplink transmission does not support frequency multiplexing with the data. If the SINR is greater than or equal to the threshold E, the uplink reference of the uplink transmission is determined. The signal supports frequency multiplexing with the data.
  • the specific value of the threshold E can be set according to actual conditions.
  • the network device considers the power headroom and the SINR to determine whether the uplink reference signal of the uplink transmission supports frequency multiplexing with the data. Specifically, when the power headroom is greater than or equal to the fifth threshold and the SINR is greater than or equal to the sixth threshold, the uplink reference signal of the uplink transmission supports frequency multiplexing with the data. Otherwise, the uplink reference signal of the uplink transmission does not support data. Frequency reuse.
  • the uplink reference signal of the uplink transmission does not support frequency multiplexing with the data; otherwise, determining the uplink transmission.
  • the upstream reference signal supports frequency multiplexing with the data.
  • the network device determines whether the uplink reference signal of the uplink transmission supports frequency multiplexing with the data, and whether the uplink reference signal supports frequency multiplexing with the data. It may be pre-agreed by the agreement, and is not limited.
  • Step 403 The network device sends configuration information to the terminal, where the configuration information includes whether the uplink reference signal supports frequency multiplexing with the data.
  • the network device may send the indication information in multiple manners.
  • the network device may indicate the uplink reference signal in the DCI through the physical layer signaling, or may indicate the uplink reference signal through the high layer signaling.
  • the plurality of candidates of the uplink reference signal are indicated by the high layer signaling, and the terminal is used to dynamically indicate which one of the plurality of candidates is used by the DCI.
  • Specific manners for dynamically indicating by DCI include, but are not limited to, the following: 1. Adding a specific domain to the DCI to indicate an uplink reference signal, such as adding a 1-bit reference signal indication field, and bit 1 indicates that the data signal can be multiplexed with the reference signal.
  • the same time domain symbol, bit 0 indicates that the data signal cannot be multiplexed with the reference signal in the same time domain symbol.
  • the specific domain is not added to the DCI to indicate the configuration information of the uplink reference signal, but is distinguished by the scrambling code sequence. For example, after encoding the DCI, the scrambling code sequence A is used for scrambling, indicating that the data signal can be multiplexed with the reference signal by the same time domain symbol, and the scrambling code sequence B is used for scrambling to indicate that the data signal cannot be multiplexed with the reference signal.
  • a time domain symbol When detecting the DCI, the terminal determines whether the uplink reference signal supports frequency multiplexing with the data according to the scrambling code sequence used when detecting the DCI.
  • Step 404 The terminal receives the configuration information sent by the network device. If the uplink reference signal does not support frequency multiplexing with the data, the terminal may not allow the data to be carried in the time domain symbol where the uplink reference signal is located. The signal supports frequency multiplexing with the data, and the terminal may allow data to be carried in the time domain symbol in which the uplink reference signal is located by default.
  • the terminal allows data to be carried in the time domain symbol in which the uplink reference signal is located, but whether the time domain symbol in which the actually generated uplink reference signal is located is carried. The data depends on whether there is data to be transmitted.
  • Step 405 The terminal sends an uplink signal to the network device.
  • Step 406 The network device receives the uplink signal sent by the terminal, and performs channel estimation, demodulation, and the like according to the configuration.
  • the embodiment of the present invention further provides a terminal and a network device, and the specific content of the terminal and the network device may be implemented by referring to the foregoing method.
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the terminal 500 includes: a transmitter 501a, a receiver 501b, a processor 502, a memory 503, and a bus system 504;
  • the memory 503 is used to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 503 may be a random access memory (RAM) or a non-volatile memory, such as at least one disk storage. Only one memory is shown in the figure, of course, the memory can also be set to a plurality as needed. Memory 503 can also be a memory in processor 502.
  • the memory 503 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 502 controls the operation of the terminal 500, and the processor 502 may also be referred to as a CPU (Central Processing Unit).
  • the components of the terminal 500 are coupled together by a bus system 504.
  • the bus system 504 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • various buses are labeled as bus system 504 in the figure. For ease of representation, only the schematic drawing is shown in FIG.
  • Processor 502 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 502 or an instruction in a form of software.
  • the processor 502 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 503, and the processor 502 reads the information in the memory 503 and performs the method steps performed by the above terminal in conjunction with its hardware.
  • FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • the network device 600 includes: a transmitter 601a, a receiver 601b, a processor 602, a memory 603, and a bus system 604;
  • the memory 603 is used to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 603 may be a random access memory (RAM) or a non-volatile memory, such as at least one disk storage. Only one memory is shown in the figure, of course, the memory can also be set to a plurality as needed. Memory 603 can also be a memory in processor 602.
  • the memory 603 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 602 controls the operation of the network device 600, which may also be referred to as a CPU (Central Processing Unit).
  • the various components of the network device 600 are coupled together by a bus system 604.
  • the bus system 604 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • various buses are labeled as bus system 604 in the figure. For ease of representation, only the schematic drawing is shown in FIG.
  • Processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 602 or an instruction in a form of software.
  • the processor 602 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 603, and the processor 602 reads the information in the memory 603 and performs the method steps performed by the above network device in conjunction with its hardware.
  • embodiments of the invention may be provided as a method, system, or computer program product.
  • embodiments of the invention may be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • embodiments of the invention may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • Embodiments of the invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Abstract

一种通信方法及装置。该方法包括：终端接收来自网络设备的指示信息，所述指示信息用于指示上行传输的配置；终端根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，生成待传输的上行信号，并向所述网络设备发送所述上行信号。由此可知，本发明实施例中上行参考信号所在的时域符号中是否允许承载数据可以由终端根据指示信息来确定，如此，相对于LTE系统中上行链路按照约定在一个时域符号上仅发送上行参考信号来说，本发明实施例具有更强的灵活性，从而能够更好地适应上行链路所采用的单载波技术或多载波技术。

Description

一种通信方法及装置
本申请要求在2017年4月28日提交中华人民共和国知识产权局、申请号为201710296586.4、发明名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，特别涉及一种通信方法及装置。
背景技术
在长期演进(Long Term Evolution，LTE)蜂窝无线通信系统的上行链路中，基站向终端发送上行授权，并指示终端(terminal)上行发送的物理资源，包括占用的频域资源即物理资源块(Physical resource block，PRB)。终端接收到上行授权后，在分配的PRB上向基站发送上行数据。
未来演进的通信系统，例如5G新无线(New radio，NR)系统，将支持新的场景，除了沿用上述基于调度的上行发送流程外，还可能包括不基于调度的上行传输(Grant-Free，GF)，此时终端在预先定义好的物理资源上发送上行数据。此外，终端可能还需要发送上行控制信息等上行信号。无论是基于调度的上行数据的传输还是不基于调度的上行数据的传输，或者上行控制信息的传输，为了对抗无线信道的随机衰落，在发送上行信号时，都需要在预先定义好的物理资源上插入参考信号，以便在上行信号占用的物理资源上进行信道估计。信道估计的性能将直接影响数据接收性能，因此，参考信号的设计与性能非常重要。
现有LTE系统的上行链路支持两种参考信号：解调参考信号(Demodulation Reference Signal，DM-RS)和探测参考信号(Sounding Reference Signal，SRS)。以SRS为例，由于LTE系统的上行链路采用的是单载波频分多址(Single carrier Frequency Division Multiple Access SC-FDMA)，因此，终端根据基站为终端分配的时频资源，直接将SRS映射到一个子帧中的最后一个符号进行发送。然而，5G NR系统的上行链路将支持正交频分复用技术(Orthogonal Frequency Division Multiplexing，OFDM)(即多载波技术)和单载波技术(SC-FDMA)，目前在5G NR系统中尚无明确的上行参考信号的传输方案。
发明内容
本发明实施例提供一种通信方法及装置，用以在上行链路中实现上行信号的传输。
第一方面，本发明实施例提供一种通信方法，包括：
终端接收来自网络设备的指示信息，所述指示信息用于指示上行传输的配置；
所述终端根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，并生成待传输的上行信号；
所述终端向所述网络设备发送所述上行信号。
由此可知，本发明实施例中上行参考信号所在的时域符号中是否允许承载数据可以由终端根据指示信息来确定，如此，相对于LTE系统中上行链路按照约定在一个时域符号上仅发送上行参考信号来说，本发明实施例具有更强的灵活性，从而能够更好地适应上行链 路所采用的多载波技术和单载波技术。且，在一些场景下采用上行参考信号所在的时域符号中允许承载数据的方案，能够有效利用时频资源；在另一些场景(例如覆盖受限)下采用上行参考信号所在的时域符号中不允许承载数据的方案，能够有效避免信号失真。
结合第一方面，在第一方面的第一种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的调制阶数；
所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
当所述上行传输的调制阶数小于第一门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第一方面，在第一方面的第二种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的编码速率；
所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
当所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第一方面，在第一方面的第三种可能的实现方式中，所述上行传输的调制阶数和所述上行传输的编码速率；
所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
当所述上行传输的调制阶数小于第一门限且所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第一方面，在第一方面的第四种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的发射功率；
所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
当所述上行传输的发射功率大于第三门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第一方面，在第一方面的第五种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的上行参考信号；
所述终端确定上行参考信号所在的时域符号中是否需承载数据，包括：
当所述上行传输的上行参考信号不支持与数据进行频率复用时，所述终端默认所述上行参考信号所在的时域符号中不允许承载数据。
结合第一方面的第一种至第五种可能的实现方式，在第一方面的第四种可能的实现方式中，所述时域符号中不允许承载数据，包括：
所述时域符号中用于所述上行传输的全部频域资源被所述上行参考信号占用；或者，
所述时域符号中用于所述上行传输的部分频域资源被所述上行参考信号占用，且所述时域符号中未被所述上行参考信号占用的频域资源不允许承载数据。
在其它可能的实现方式中，例如一：上行传输的配置可以包括所述上行传输的波形；
当所述上行传输的波形为单载波波形(如SC-FDMA波形，又被称作DFT-S-OFDM波形)时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
例如二：上行传输的配置可以包括所述上行传输的波形、第一配置信息，第一配置信息中包括上行传输的MCS索引值和上行传输的发射功率；
当所述上行传输的波形为单载波波形，且第一配置信息符合第一预设条件时，所述终端确定所述上行参考信号所在的时域符号中允许承载数据；第一配置信息符合第一预设条 件具体可以为：上行传输的发射功率小于第一阈值和/或上行传输的MCS索引值大于等于第二阈值。第一阈值和第二阈值可由本领域技术人员根据实际情况和经验来设置，具体不做限定。
例如三：上行传输的配置可以包括所述上行传输的波形、第一配置信息，第一配置信息中包括上行传输的MCS索引值和上行传输的发射功率；
当所述上行传输的波形为多载波波形(如OFDM波形，包括CP-OFDM波形等)，且第一配置信息符合第二预设条件时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据；第一配置信息符合第二预设条件具体可以为：上行传输的发射功率大于等于第三阈值和/或上行传输的MCS索引值小于第四阈值。第三阈值和第四阈值可由本领域技术人员根据实际情况和经验来设置，具体不做限定。
第二方面，本发明实施例提供一种通信方法，所述方法包括：
网络设备向终端发送配置信息，所述配置信息用于指示上行参考信号所在的时域符号中是否允许承载数据；
所述网络设备接收终端发送的所述上行参考信号。
如此，网络设备向终端发送的配置信息可以指示上行参考信号所在的时域符号中是否允许承载数据，如此，相对于LTE系统中上行链路按照约定在一个时域符号上仅发送上行参考信号来说，本发明实施例具有更强的灵活性，从而能够更好地适应上行链路所采用的多载波技术和单载波技术。且，在一些场景下采用上行参考信号所在的时域符号中允许承载数据的方案，能够有效利用时频资源；在另一些场景(例如覆盖受限)下采用上行参考信号所在的时域符号中不允许承载数据的方案，能够有效避免信号失真。
结合第二方面，在第二方面的第一种可能的实现方式中，所述配置信息包括上行传输的调制阶数、上行传输的编码速率和上行传输的发射功率中的任一项或任意组合。
结合第二方面，在第二方面的第二种可能的实现方式中，所述配置信息包括所述上行参考信号是否支持与数据进行频率复用；
所述网络设备向终端发送配置信息之前，还包括：
所述网络设备确定所述上行参考信号是否支持与数据进行频率复用。
结合第二方面的第二种可能的实现方式，在第二方面的第三种可能的实现方式中，所述网络设备确定所述上行参考信号是否支持与数据进行频率复用，包括：
当所述终端的功率余量小于第四门限时，所述网络设备确定所述上行参考信号不支持与数据进行频率复用。
结合第二方面的第二种可能的实现方式，在第二方面的第四种可能的实现方式中，所述网络设备确定所述上行参考信号是否支持与数据进行频率复用，包括：
当所述终端的信干噪比SINR小于第五门限时，所述网络设备确定所述上行传输的上行参考信号不支持与数据进行频率复用。
在其它可能的实现方式中，例如，当所述终端的功率余量小于第四门限且所述终端的信干噪比SINR小于第五门限时，所述网络设备确定所述上行参考信号不支持与数据进行频率复用。
第三方面，本发明实施例提供一种终端，所述终端包括：发送器、接收器和处理器；
所述接收器，用于接收来自网络设备的指示信息，所述指示信息用于指示上行传输的配置；
所述处理器，用于根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，并生成待传输的上行信号；
所述发送器，用于向所述网络设备发送所述上行信号。
结合第三方面，在第三方面的第一种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的调制阶数；
所述处理器具体用于：
当所述上行传输的调制阶数小于第一门限时，确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第三方面，在第三方面的第二种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的编码速率；
所述处理器具体用于：
当所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第三方面，在第三方面的第三种可能的实现方式中，所述上行传输的调制阶数和所述上行传输的编码速率；
所述处理器具体用于：
当所述上行传输的调制阶数小于第一门限且所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第三方面，在第三方面的第四种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的发射功率；
所述处理器具体用于：
当所述上行传输的发射功率大于第三门限时，确定所述上行参考信号所在的时域符号中不允许承载数据。
结合第三方面，在第三方面的第五种可能的实现方式中，所述指示信息指示的上行传输的配置包括所述上行传输的上行参考信号；
所述处理器具体用于：
当所述上行传输的上行参考信号不支持与数据进行频率复用时，默认所述上行参考信号所在的时域符号中不允许承载数据。
结合第三方面的第一种至第三种可能的实现方式，在第三方面的第四种可能的实现方式中，所述时域符号中不允许承载数据，包括：
所述时域符号中用于所述上行传输的全部频域资源被所述上行参考信号占用；或者，
所述时域符号中用于所述上行传输的部分频域资源被所述上行参考信号占用，且所述时域符号中未被所述上行参考信号占用的频域资源不允许承载数据。
第四方面，本发明实施例提供一种网络设备，所述网络设备包括：发送器、接收器和处理器；所述处理器结合所述发送器和所述接收器执行：
向终端发送配置信息，所述配置信息用于指示上行参考信号所在的时域符号中是否允许承载数据；
接收所述终端发送的所述上行信号。
结合第四方面，在第四方面的第一种可能的实现方式中，所述配置信息包括上行传输的调制阶数、上行传输的编码速率和上行传输的发射功率中的任一项或任意组合。
结合第四方面，在第四方面的第二种可能的实现方式中，所述配置信息包括所述上行参考信号是否支持与数据进行频率复用；
所述处理器在所述发送器发送所述配置信息之前，还用于：
确定所述上行参考信号是否支持与数据进行频率复用。
结合第四方面的第二种可能的实现方式，在第四方面的第三种可能的实现方式中，所述处理器具体用于：
当所述终端的功率余量小于第四门限时，确定所述上行传输的上行参考信号不支持与数据进行频率复用。
结合第四方面的第二种可能的实现方式，在第四方面的第四种可能的实现方式中，所述处理器具体用于：
当所述终端的信干噪比SINR小于第五门限时，确定所述上行传输的上行参考信号不支持与数据进行频率复用。
第五方面，本发明实施例还提供一种装置，该装置包括用于执行上述方法步骤的各功能模块，例如发送模块、接收模块和处理模块等。该装置可以是终端、网络设备等。
第六方面，本发明实施例还提供一种装置，该装置包括处理器和存储器，所述存储器用于存储软件程序，所述处理器用于读取所述存储器中存储的软件程序并实现上述任意一种设计提供的通信方法。该装置可以是终端、网络设备等。
第七方面，本发明实施例还提供一种计算机存储介质，该存储介质中存储软件程序，该软件程序在被一个或多个处理器读取并执行时可实现上述任意一种设计提供的通信方法。
第八方面，本发明实施例还提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述任意一种设计提供的通信方法。
本发明实施例中，终端接收来自网络设备的指示信息，所述指示信息用于指示上行传输的配置；终端根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，生成待传输的上行信号，并向所述网络设备发送所述上行信号。由此可知，本发明实施例中上行参考信号所在的时域符号中是否允许承载数据可以由终端根据指示信息来确定，如此，相对于LTE系统中上行链路按照约定在一个时域符号上仅发送上行参考信号来说，本发明实施例具有更强的灵活性，从而能够更好地适应上行链路所采用的多载波技术和单载波技术。且，在一些场景下采用上行参考信号所在的时域符号中允许承载数据的方案，能够有效利用时频资源；在另一些场景(例如覆盖受限)下采用上行参考信号所在的时域符号中不允许承载数据的方案，能够有效避免信号失真。
附图说明
图1为本发明实施例适用的一种系统架构示意图；
图2为本发明实施例一提供的一种上行参考信号的发送方法所对应的流程示意；
图3a为上行参考信号所占用的时频资源示意图；
图3b为上行参考信号和数据信号在同一符号上复用时的一种时频资源示意图；
图3c为上行参考信号和数据信号不在同一符号上复用时的一种时频资源示意图；
图3d和图3e为上行参考信号和数据信号不在同一符号上复用时的另两种时频资源示意图；
图4为本发明实施例二提供的一种上行参考信号的发送方法所对应的流程示意图；
图5为本发明实施例提供的一种终端的结构示意图；
图6为本发明实施例提供的一种网络设备的结构示意图。
具体实施方式
下面结合说明书附图对本发明实施例进行具体描述。
本发明实施例中的上行参考信号的发送方法可适用于多种系统架构。图1为本发明实施例适用的一种系统架构示意图。如图1所示，该系统架构中包括网络设备101、一个或多个终端，比如图1所示的第一终端1021、第二终端1022、第三终端1023。网络设备101可通过网络与第一终端1021、第二终端1022、第三终端1023进行信息传输，具体来说，第一终端1021、第二终端1022、第三终端1023可向网络设备101发送上行参考信号。
本发明实施例中，网络设备可以为基站设备(base station，BS)。基站设备也可称为基站，是一种部署在无线接入网用以提供无线通信功能的装置。例如在2G网络中提供基站功能的设备包括基地无线收发站(base transceiver station，BTS)和基站控制器(base station controller，BSC)，3G网络中提供基站功能的设备包括节点B(NodeB)和无线网络控制器(radio network controller，RNC)，在4G网络中提供基站功能的设备包括演进的节点B(evolved NodeB，eNB)，在5G NR网络中提供基站功能的设备包括新无线节点B，集中单元(Centralized Unit，CU)，分布式单元(Distributed Unit)和新无线控制器，在WLAN中，提供基站功能的设备为接入点(Access Point，AP)。
终端可以为向用户提供语音和/或数据连通性的设备(device)，包括有线终端和无线终端。无线终端可以是具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备，经无线接入网与一个或多个核心网进行通信的移动终端。例如，无线终端可以为移动电话、计算机、平板电脑、个人数码助理(personal digital assistant，缩写：PDA)、移动互联网设备(mobile Internet device，缩写：MID)、可穿戴设备和电子书阅读器(e-book reader)等。又如，无线终端也可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动设备。再如，无线终端可以为移动站(mobile station)、接入点(access point)、或用户设备(user equipment，简称UE)的一部分。
上述系统架构适用的通信系统包括但不限于：码分多址(Code Division Multiple Access，CDMA)IS-95、码分多址(Code Division Multiple Access，CDMA)2000、时分同步码分多址(Time Division-Synchronous Code Division Multiple Access，TD-SCDMA)、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)、时分双工-长期演进(Time Division Duplexing-Long Term Evolution，TDD LTE)、频分双工-长期演进(Frequency Division Duplexing-Long Term Evolution，FDD LTE)、长期演进-增强(Long Term Evolution-Advanced，LTE-advanced)，以及未来演进的各种无线通信系统(例如，5G NR系统)。
以5G NR系统为例，5G NR系统的上行链路可支持多载波技术和单载波技术，具体来说，可上行传输可使用OFDM波形(包括循环前缀正交频分复用(Cyclic prefix-OrthogonalFrequency Division Multiplexing，CP-OFDM)波形)和基于离散傅里叶变换(Discrete Fourier Transformation，DFT)扩展的正交频分复用(DFT spread OFDM， DFT-S-OFDM)波形(也可称为SC-FDMA)，在两种波形并存的情况下，发送上行参考信号的一种可能的实现方式为，直接采用现有技术中LTE上行链路发送参考信号的方式来发送参考信号，然而，由于LTE系统上行按照约定在一个时域符号上仅发送上行参考信号，发送方式过于单一，可能造成部分时频资源的浪费。
考虑到5G NR系统中上行采用CP-OFDM，可以采用更加灵活的资源映射方式，因此，发送上行参考信号的另一种可能的实现方式为将参考信号和数据信号在同一个时域符号上复用，即频分复用的方式，从而有效提高资源利用率，其中，数据信号可以为承载在上行共享信道(Physical uplink shared channel，PUSCH)和上行控制信道(Physical uplink control channel，PUCCH)上的信息。然而，由于5G NR系统中上行也可采用SC-FDMA波形，SC-FDMA波形相对CP-OFDM具有更低的峰值平均功率比(Peak to Average Power Ratio，PAPR)。在参考信号和PUSCH共存的符号上，该符号的PAPR会提升，从而使得在包含参考信号的符号上功放进入非线性工作区，引起信号失真，造成信道估计与数据接收不准确。
基于此，本发明实施例提供一种通信方法，具体为终端接收来自网络设备的用于指示上行传输的配置的指示信息，并根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，进而生成待传输的上行信号发送给网络设备。由此可知，本发明实施例中上行参考信号所在的时域符号中是否允许承载数据可以由终端根据指示信息来确定，如此，相对于LTE系统中上行链路按照约定在一个时域符号上仅发送上行参考信号来说，本发明实施例具有更强的灵活性，从而能够更好地适应上行链路所采用的多载波技术和单载波技术。且，在一些场景下采用上行参考信号所在的时域符号中允许承载数据的方案，能够有效利用时频资源；在另一些场景(例如覆盖受限)下采用上行参考信号所在的时域符号中不允许承载数据的方案，能够有效避免信号失真。
需要说明的是，本发明实施例中，上行参考信号所在的时域符号中是否允许承载数据可由终端根据网络设备发送的指示信息来确定，具体来说，网络设备可以通过显式或隐式的方式来指示终端。其中，显式的方式是指由网络设备来确定上行传输的上行参考信号是否支持与数据进行频率复用，此种情况下，网络设备发送的指示信息所指示的上行传输的配置包括上行传输的上行参考信号；隐式的方式是指网络设备配置终端的相关信息(例如上行传输的波形、上行传输的发射功率、上行传输的调制阶数、上行传输的编码速率等)后，将相关信息发送给终端，由终端根据相关信息确定上行传输的上行参考信号是否允许承载数据。下面分别进行具体介绍。
实施例一：隐式的方式
图2为本发明实施例一提供的一种通信方法所对应的流程示意图，如图2所示，该方法包括：
步骤201，网络设备向终端发送指示信息，指示信息用于指示上行传输的配置；
需要说明的是，本发明实施例中，指示信息中可以包括配置信息，配置信息用于指示上行参考信号所在的时域符号中是否允许承载数据。具体地，配置信息可以包括上行传输的波形、上行传输的发射功率和上行传输的调制阶数中的至少一项。
本发明实施例中，网络设备可以通过多种方式发送指示信息，以指示信息指示的上行传输的配置包括上行传输的波形、上行传输的发射功率和上行传输的调制阶数中的至少一 项为例，网络设备可以通过物理层信令，即在下行控制信息(Downlink Control Information，DCI)中指示上行传输的波形、上行传输的发射功率、上行传输的调制阶数和上行传输的编码速率中的至少一项；或者，网络设备也可以通过高层信令(例如无线资源控制(Radio Resource Control，RRC)信令)配置上行传输的波形、上行传输的调制阶数和上行传输的编码速率中的至少一项；又或者，网络设备也可以通过高层信令配置上行传输的波形、上行传输的发射功率的多个候选项，并通过DCI动态指示终端使用多个候选项中的哪一个。
步骤202，终端接收指示信息，根据指示信息确定上行参考信号所在的时域符号中是否允许承载数据，并生成待传输的上行信号。
具体来说，由于指示信息指示的上行传输的配置可以包括上行传输的波形、上行传输的发射功率、上行传输的调制阶数和上行传输的编码速率中的至少一项，相应地，终端可根据上行传输的波形、上行传输的发射功率、上行传输的调制阶数和上行传输的编码速率中的至少一项来确定上行参考信号所在的时域符号中是否允许承载数据。例如，当所述上行传输的调制阶数小于第一门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据；或者，当所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据；或者，当所述上行传输的调制阶数小于第一门限且所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据；或者，当所述上行传输的发射功率大于第三门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。第一门限、第二门限和第三门限的取值可以是预先约定的，或者，也可以是由网络设备发送给终端。
下面具体列举几种可能的实现方式：
方式一：终端根据上行传输的波形来确定上行参考信号所在的时域符号中是否允许承载数据
在5G NR系统中，上行传输可支持SC-FDMA波形和OFDM波形。本发明实施例中，考虑到SC-FDMA波形相比OFDM波形具有更低的PAPR，因此，SC-FDMA波形更适合在低信干噪比(Signal to interference and noise，SINR)的场景(如覆盖受限场景)中使用。在这种场景下，一般需要更高的发射功率，功放也需要较高的效率，因此，若在上行参考信号所在的时域符号中传输数据信号，则可能造成PAPR明显升高，基于此，当上行传输被配置为OFDM波形时，上行参考信号所在的时域符号中允许承载数据，当上行传输被配置为SC-FDMA波形时，上行参考信号所在的时域符号中不允许承载数据。
具体实施中，终端可存储有波形和标签(用于表示上行参考信号所在的时域符号中是否允许承载数据，例如，标签1表示允许承载数据，标签0表示不允许承载数据)的对应关系表，如表1所示，OFDM波形对应标签1，SC-FDMA波形对应标签0；若终端确定指示信息指示的上行传输的波形为OFDM波形，则可确定上行参考信号所在的时域符号中允许承载数据；若终端确定指示信息指示的上行传输的波形为SC-FDMA波形，则可确定上行参考信号所在的时域符号中不允许承载数据。
表1：波形和标签对应关系表
波形 标签
OFDM波形 标签1
SC-FDMA波形 标签0
方式二：终端根据上行传输的发射功率来确定上行参考信号所在的时域符号中是否允许承载数据
本发明实施例中，考虑到PAPR直接影响功放，因此，根据上行传输的发射功率来确定上行参考信号所在的时域符号中是否允许承载数据具有较强的可行性。终端可设置一个阈值A，若指示信息指示的上行传输的发射功率大于等于阈值A，则终端可确定上行参考信号所在的时域符号中不允许承载数据，若指示信息指示的上行传输的发射功率小于阈值A，则终端可确定上行参考信号所在的时域符号中允许承载数据。具体实施中，终端中可存储有发射功率和标签(用于表示上行参考信号所在的时域符号中是否允许承载数据，例如，标签1表示允许承载数据，标签0表示不允许承载数据)的对应关系表，如表2所示，终端的发射功率大于等于阈值A，对应标签0，终端的发射功率小于阈值A，对应标签1。
表2：发射功率和配置信息对应关系表
发射功率 配置信息
发射功率≥A 标签0
发射功率<A 标签1
方式三：终端根据上行传输的调制阶数和/或编码速率来确定上行参考信号所在的时域符号中是否允许承载数据
考虑到上行传输的调制阶数和码率通常可以由编码调制方式(Modulation and Coding scheme，MCS)索引值来统一指示，因此，下面以终端根据MCS索引值来确定上行参考信号所在的时域符号中是否允许承载数据为例进行说明。
在覆盖受限等场景中，需要较高的发射功率，且对PAPR更加敏感。而在这些场景中，针对于自适应编码调制(Adaptive Modulation and Coding)机制，网络设备通常会为终端配置较低的码率和调制方式，由此可知，MCS与PAPR是否敏感存在一定的对应关系。因此，终端中可设置一个MCS索引值(index)的阈值B，若指示信息指示的上次传输的MCS索引值大于等于阈值B，则终端可确定上行参考信号所在的时域符号中允许承载数据，若指示信息指示的上行传输的MCS索引值小于阈值B，则终端可确定上行参考信号所在的时域符号中不允许承载数据。以LTE为例，MCS共包括32(0-31)个可能的索引值，则可设置阈值B为5，则相应地，MCS索引值为0-4时，对应标签0(上行参考信号所在的时域符号中不允许承载数据)，MCS索引值为5-31时，对应标签1(上行参考信号所在的时域符号中允许承载数据)，如表3所示。
表3：MCS索引值和标签对应关系表
MCS索引值 标签
0-4 标签0
5-31 标签1
本发明实施例中，阈值B可以预先定义，或者，也可以是由系统消息等在系统中进行广播通知终端，又或者，也可以由高层信令如RRC信令进行配置通知终端。
方式四：终端根据上行传输的波形、上行传输的发射功率、上行传输的调制阶数和编码速率的任意组合确定上行参考信号所在的时域符号中是否允许承载数据
本发明实施例中，如前所述，由于上行传输的波形、上行传输的发射功率和上行传输 的MCS索引值均可作为上行参考信号所在的时域符号中是否允许承载数据的判断因素，因此，终端也可以根据上述三者的任意组合来确定上行参考信号所在的时域符号中是否允许承载数据。例如，终端根据上述三者的组合来确定上行参考信号所在的时域符号中是否允许承载数据，此种情况下，指示信息指示的上行传输的配置包括上述三者，具体可设置上行传输的波形为SC-FDMA波形、MCS索引值小于阈值B且发射功率大于等于阈值A时，上行参考信号所在的时域符号中不允许承载数据，其余情形下，上行参考信号所在的时域符号中允许承载数据。
针对于上述方式一至方式四等多种方式，下面具体介绍一种示例。
步骤201中，指示信息指示的上行传输的配置包括上行传输的波形和第一配置信息，第一配置信息包括上行传输的发射功率和/或上行传输的MCS索引值，相应地，在步骤202中，终端可根据上行传输的波形和第一配置信息确定上行参考信号所在的时域符号中是否允许承载数据。
该示例中的一种实现方式为，终端若确定指示信息指示的上行传输的波形为SC-FDMA波形，且第一配置信息符合第一预设条件，则确定上行参考信号所在的时域符号中允许承载数据，否则，确定上行参考信号所在的时域符号不允许承载数据。第一配置信息符合第一预设条件具体可以为：上行传输的发射功率小于第一阈值和/或上行传输的MCS索引值大于等于第二阈值。第一阈值和第二阈值可由本领域技术人员根据实际情况和经验来设置，具体不做限定。
采用这种方式，针对于SC-FDMA波形，若第一配置信息符合第一预设条件，则上行参考信号所在的时域符号中允许承载数据，即上行参考信号和数据信号可在同一个时域符号上复用，相比于现有的LTE系统上行链路中采用SC-FDMA波形时，仅在一个子帧中的最后一个符号上发送SRS的方式，本发明实施例能够在保证参考信号的信道估计性能的基础上，有效提高时频资源的利用率。
该示例中的另一种实现方式为，终端确定所述终端使用的波形为OFDM波形，且第一配置信息符合第二预设条件，则确定上行参考信号所在的时域符号中不允许承载数据，否则，确定上行参考信号所在的时域符号允许承载数据。第一配置信息符合第二预设条件具体可以为：上行传输的发射功率大于等于第三阈值和/或上行传输的MCS索引值小于第四阈值。第三阈值和第四阈值可由本领域技术人员根据实际情况和经验来设置，具体不做限定。
采用这种方式，针对于OFDM波形，若第一配置信息符合第二预设条件，则上行参考信号所在的时域符号中不允许承载数据，即上行参考信号和数据信号不在同一个时域符号上复用，相比于现有的LTE系统下行链路中采用OFDM波形时，参考信号和数据信号总是在一个符号上复用，本发明实施例能够有效避免现有技术中可能出现的参考信号失真，而导致信道估计不准确的问题。
根据上述示例可知，本发明实施例中通过对不同的场景进行细致划分，并基于划分后的场景，确定上行参考信号所在的时域符号中是否允许承载数据，从而为多载波技术中的上行参考信号的发送提供了一种可行性较高的实现方案。
步骤203，终端向网络设备发送上行信号。
具体实施中，如图3a所示，上行参考信号所占用的时域符号为符号2、符号5、符号9和符号12，一种示例，终端可将频域资源上的RE划分为3个分组，即编号为1的RE 为第一RE分组，编号为2的RE为第二RE分组，编号为3的RE为第三RE分组。此时，任一RE分组中相邻的两个RE之间间隔2个RE。本发明实施例中，上行参考信号的配置信息中还可以包括上行参考信号所占用的RE分组的个数，终端可根据上行参考信号所占用的RE分组的个数(例如P)，生成P组参考信号，并将P组参考信号分别映射到三个RE分组中的任意P个RE分组中的RE上进行发送，其中，P的取值可以为1、2或3。
进一步地，为了保证低PAPR特性，可设置P组参考信号间满足预设的约束条件，其中，预设的约束条件可以为P组参考信号是基于同一个ZC序列生成的。
对于终端的一次上行传输，复用与不复用两种情况下，上行参考信号的生成序列相同。以下给出一个基于同一个ZC序列生成上行参考信号的方案：复用时，假设生成上行参考信号的ZC序列的时域表达为x j(t)，其中j为复用时上行参考信号的组数，t为时域样点；则不复用时，生成第i组上行参考信号的ZC序列的时域表达为x i(t)＝C ix j(t)e -(j-i)θ，其中C i、θ为常数。
如此，由于LTE系统中下行参考信号是基于全带宽生成的，且生成参考信号的ZC序列也是基于全带宽参考信号占用的RE的数量生成的，因此，当参考信号占用部分带宽传输时，无法满足多个终端间参考信号良好的互相关特性，而本发明实施例中通过采用上述方式，即将一个符号上的RE划分为多个分组来承载多组参考信号，且多组参考信号间满足预设的约束条件，能够很好地解决这一问题。
举个例子，终端1占用符号2中第一RE分组来发送上行参考信号，而终端2占用符号2中的第一RE分组和第二RE分组来发送上行参考信号，此时，由于终端2在第一RE分组和第二RE分组上的上行参考信号是基于同一ZC序列生成的，且终端1在第一RE分组上的上行参考信号也是基于该ZC序列生成的，从而使得终端1在第一RE分组上的上行参考信号和终端2在第一RE分组上的上行参考信号之间具有良好的互相关特性，有效避免相互干扰。
本发明实施例中，图3b为上行参考信号和数据信号在同一符号上复用时的一种时频资源示意图。如图3b所示，在上行参考信号所占用的第一时域符号上除参考信号所占用的RE以外的RE为所述数据信号所占用的RE。
图3c为参考信号和数据信号不在同一符号上复用时的一种时频资源示意图。如图3c所示，在上行参考信号所占用的第二时域符号上除参考信号所占用的RE以外的RE为空白RE。
需要说明的是，上述图3b和图3c中是以参考信号和数据信号在同一符号上复用以及参考信号和数据信号不在同一符号上复用的两种情形下，参考信号的图样(pattern)相同为例进行说明，此时两种情形下参考信号的在RE上的发射功率可能有所区别，即图3b所示的情形下参考信号在RE上的发射功率小于图3c所示的情形下参考信号在RE上的发射功率。
本发明实施例中，参考信号和数据信号在同一符号上复用以及参考信号和数据信号不在同一符号上复用的两种情形下，参考信号的图样也可以不相同。下面以参考信号和数据信号不在同一符号上复用的情形为例，列举几种可能参考信号的图样，分别如图3d、图3e所示。相应地，在参考信号和数据信号在同一符号上复用的情形下，参考信号也可以采用图3d所示出的图样，具体不做限定。一种示例，参考信号和数据信号在同一符号上复用时采用图3b所示出的方式，而参考信号和数据信号不在同一符号上复用时可采用图3d 或图3e所示出的方式。
步骤204，网络设备接收终端发送的上行信号，并可按照配置进行信道估计、解调等。
需要说明的是：(1)本发明实施例中的时域符号可以为OFDM符号，或者，也可以为SC-FDMA符号。(2)上行参考信号所在的时域符号可以是终端和网络设备预先约定好的，此种情况下，终端可根据预先约定确定出上行参考信号所在的时域符号。
实施例二：显示的方式
图4为本发明实施例二提供的一种通信方法所对应的流程示意图，如图4所示，该方法包括：
步骤401，网络设备获取终端的功率余量和/或终端的SINR。
步骤402，网络设备根据功率余量和/或终端的SINR，确定上行传输的上行参考信号是否支持与数据进行频率复用。例如，当所述终端的功率余量小于第四门限时，所述网络设备确定所述上行参考信号不支持与数据进行频率复用；或者，当所述终端的信干噪比SINR小于第五门限时，所述网络设备确定所述上行传输的上行参考信号不支持与数据进行频率复用。
下面具体列举几种可能的实现方式：
方式一，网络设备确定所述终端的功率余量大于等于第五阈值和/或所述终端的SINR大于等于第六阈值，则确定上行传输的上行参考信号支持与数据进行频率复用，否则，确定上行传输的上行参考信号不支持与数据进行频率复用。
该实现方式下的示例一，网络设备可根据终端上报的功率余量确定上行传输的上行参考信号是否支持与数据进行频率复用。例如，网络设备可对上行参考信号与数据信号在同一个符号上复用时的功率余量设定一个偏移值，如2dB，若终端上报的功率余量为6dB，则网络设备计算得到参考信号与数据信号在同一个符号上复用的功率余量为6dB-2dB＝4dB，并根据4dB的修正功率余量确定终端上行发送的参考信号是否与数据信号在同一个符号上进行复用；例如，可设置一个阈值D(第五阈值)，若终端上报的功率余量大于等于阈值D，则确定上行传输的上行参考信号支持与数据进行频率复用，若终端上报的功率余量小于阈值D，则确定上行传输的上行参考信号不支持与数据进行频率复用。其中，阈值D的具体取值可根据实际情况来设置。
该实现方式下的示例二，网络设备根据终端的SRS，计算上行的SINR，并根据测算的SINR确定上行传输的上行参考信号是否支持与数据进行频率复用。例如，可设置一个阈值E(第六阈值),若SINR小于阈值E，则确定上行传输的上行参考信号不支持与数据进行频率复用，若SINR大于等于阈值E，则确定上行传输的上行参考信号支持与数据进行频率复用。其中，阈值E的具体取值可根据实际情况来设置。
该实现方式下的示例三，网络设备综合考虑功率余量与SINR，来确定上行传输的上行参考信号是否支持与数据进行频率复用。具体来说，可设置功率余量大于等于第五阈值且SINR大于等于第六阈值时，上行传输的上行参考信号支持与数据进行频率复用，否则，上行传输的上行参考信号不支持与数据进行频率复用。
方式二，网络设备若确定终端的功率余量小于第七阈值和/或所述终端的SINR小于第八阈值，则上行传输的上行参考信号不支持与数据进行频率复用，否则，确定上行传输的上行参考信号支持与数据进行频率复用。具体内容可类比上述实现方式，此处不再赘述。
需要说明的是，上述步骤401和步骤402中仅是网络设备确定上行传输的上行参考信号是否支持与数据进行频率复用的一种可能的示例，上行参考信号是否支持与数据进行频率复用也可以是由协议预先约定的，具体不做限定。
步骤403，网络设备向终端发送配置信息，配置信息包括上行参考信号是否支持与数据进行频率复用。
本发明实施例中，网络设备可以通过多种方式发送指示信息，例如，网络设备可以通过物理层信令，即在DCI中指示上行参考信号，或者，也可以通过高层信令指示上行参考信号，又或者，通过高层信令指示上行参考信号的多个候选项，并通过DCI动态指示终端使用多个候选项中的哪一个。通过DCI动态指示的具体方式包括但不限于以下几种：一、在DCI中添加特定的域指示上行参考信号，如加入1比特的参考信号指示域，比特1表示数据信号可与参考信号复用同一个时域符号，比特0表示数据信号不可与参考信号复用同一个时域符号。二、不在DCI中添加特定的域指示上行参考信号的配置信息，而通过扰码序列加以区分。如在对DCI进编码后，采用扰码序列A进行扰码，表示数据信号可与参考信号复用同一个时域符号，采用扰码序列B进行扰码表示数据信号不可与参考信号复用同一个时域符号。终端在检测DCI时，根据检测出DCI时使用的扰码序列确定上行参考信号是否支持与数据进行频率复用。
步骤404，终端接收网络设备发送的配置信息，若上行参考信号不支持与数据进行频率复用，则所述终端可默认所述上行参考信号所在的时域符号中不允许承载数据；若上行参考信号支持与数据进行频率复用，则所述终端可默认所述上行参考信号所在的时域符号中允许承载数据。
需要说明的是，若上行参考信号支持与数据进行频率复用，则终端默认所述上行参考信号所在的时域符号中允许承载数据，但实际生成的上行参考信号所在的时域符号中是否承载数据取决于是否有数据需要传输。
步骤405，终端向网络设备发送上行信号。
步骤406，网络设备接收终端发送的上行信号，并可按照配置进行信道估计、解调等。
实施例二中的其它内容，例如参考信号的图样，可参照上述实施一中的描述，此处不再赘述。
针对上述方法流程，本发明实施例还提供一种终端和网络设备，该终端和网络设备的具体内容可以参照上述方法实施。
图5为本发明实施例提供的一种终端的结构示意图。如图5所示，该终端500包括：发送器501a、接收器501b、处理器502、存储器503和总线系统504；
其中，存储器503，用于存放程序。具体地，程序可以包括程序代码，程序代码包括计算机操作指令。存储器503可能为随机存取存储器(random access memory，简称RAM)，也可能为非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。图中仅示出了一个存储器，当然，存储器也可以根据需要，设置为多个。存储器503也可以是处理器502中的存储器。
存储器503存储了如下的元素，可执行模块或者数据结构，或者它们的子集，或者它们的扩展集：
操作指令：包括各种操作指令，用于实现各种操作。
操作系统：包括各种系统程序，用于实现各种基础业务以及处理基于硬件的任务。
处理器502控制终端500的操作，处理器502还可以称为CPU(Central Processing Unit，中央处理单元)。具体的应用中，终端500的各个组件通过总线系统504耦合在一起，其中总线系统504除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统504。为便于表示，图5中仅是示意性画出。
上述本申请实施例揭示的方法可以应用于处理器502中，或者由处理器502实现。处理器502可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器502中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器502可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器503，处理器502读取存储器503中的信息，结合其硬件执行以上终端所执行的方法步骤。
图6为本发明实施例提供的一种网络设备的结构示意图。如图6所示，该网络设备600包括：发送器601a、接收器601b、处理器602、存储器603和总线系统604；
其中，存储器603，用于存放程序。具体地，程序可以包括程序代码，程序代码包括计算机操作指令。存储器603可能为随机存取存储器(random access memory，简称RAM)，也可能为非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。图中仅示出了一个存储器，当然，存储器也可以根据需要，设置为多个。存储器603也可以是处理器602中的存储器。
存储器603存储了如下的元素，可执行模块或者数据结构，或者它们的子集，或者它们的扩展集：
操作指令：包括各种操作指令，用于实现各种操作。
操作系统：包括各种系统程序，用于实现各种基础业务以及处理基于硬件的任务。
处理器602控制网络设备600的操作，处理器602还可以称为CPU(Central Processing Unit，中央处理单元)。具体的应用中，网络设备600的各个组件通过总线系统604耦合在一起，其中总线系统604除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统604。为便于表示，图6中仅是示意性画出。
上述本申请实施例揭示的方法可以应用于处理器602中，或者由处理器602实现。处理器602可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器602中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器602可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的 步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器603，处理器602读取存储器603中的信息，结合其硬件执行以上网络设备所执行的方法步骤。
本领域内的技术人员应明白，本发明实施例可提供为方法、系统、或计算机程序产品。因此，本发明实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明实施例是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    终端接收来自网络设备的指示信息，所述指示信息用于指示上行传输的配置；
    所述终端根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，并生成待传输的上行信号；
    所述终端向所述网络设备发送所述上行信号。
  2. 根据权利要求1所述的方法，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的调制阶数；
    所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
    当所述上行传输的调制阶数小于第一门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
  3. 根据权利要求1所述的方法，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的编码速率；
    所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
    当所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
  4. 根据权利要求1所述的方法，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的调制阶数和所述上行传输的编码速率；
    所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
    当所述上行传输的调制阶数小于第一门限且所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
  5. 根据权利要求1所述的方法，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的发射功率；
    所述终端确定上行参考信号所在的时域符号中是否允许承载数据，包括：
    当所述上行传输的发射功率大于第三门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
  6. 根据权利要求1所述的方法，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的上行参考信号；
    所述终端确定上行参考信号所在的时域符号中是否需承载数据，包括：
    当所述上行传输的上行参考信号不支持与数据进行频率复用时，所述终端默认所述上行参考信号所在的时域符号中不允许承载数据。
  7. 根据权利要求2至6中任一所述的方法，其特征在于：
    所述时域符号中不允许承载数据，包括：
    所述时域符号中用于所述上行传输的全部频域资源被所述上行参考信号占用；或者，
    所述时域符号中用于所述上行传输的部分频域资源被所述上行参考信号占用，且所述时域符号中未被所述上行参考信号占用的频域资源不允许承载数据。
  8. 一种通信方法，其特征在于，所述方法包括：
    网络设备向终端发送配置信息，所述配置信息用于指示上行参考信号所在的时域符号 中是否允许承载数据；
    所述网络设备接收终端发送的所述上行参考信号。
  9. 根据权利要求8所述的方法，其特征在于，所述配置信息包括上行传输的调制阶数、上行传输的编码速率和上行传输的发射功率中的任一项或任意组合。
  10. 根据权利要求8所述的方法，其特征在于，所述配置信息包括所述上行参考信号是否支持与数据进行频率复用；
    所述网络设备向终端发送配置信息之前，还包括：
    所述网络设备确定所述上行参考信号是否支持与数据进行频率复用。
  11. 根据权利要求10所述的方法，其特征在于，所述网络设备确定所述上行参考信号是否支持与数据进行频率复用，包括：
    当所述终端的功率余量小于第四门限时，所述网络设备确定所述上行参考信号不支持与数据进行频率复用。
  12. 根据权利要求10所述的方法，其特征在于，所述网络设备确定所述上行参考信号是否支持与数据进行频率复用，包括：
    当所述终端的信干噪比SINR小于第五门限时，所述网络设备确定所述上行传输的上行参考信号不支持与数据进行频率复用。
  13. 一种终端，其特征在于，所述终端包括：发送器、接收器和处理器；
    所述接收器，用于接收来自网络设备的指示信息，所述指示信息用于指示上行传输的配置；
    所述处理器，用于根据所述指示信息，确定上行参考信号所在的时域符号中是否允许承载数据，并生成待传输的上行信号；
    所述发送器，用于向所述网络设备发送所述上行信号。
  14. 根据权利要求13所述的终端，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的调制阶数；
    所述处理器具体用于：
    当所述上行传输的调制阶数小于第一门限时，确定所述上行参考信号所在的时域符号中不允许承载数据。
  15. 根据权利要求13所述的终端，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的编码速率；
    所述处理器具体用于：
    当所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
  16. 根据权利要求13所述的终端，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的调制阶数和所述上行传输的编码速率；
    所述处理器具体用于：
    当所述上行传输的调制阶数小于第一门限且所述上行传输的编码速率小于第二门限时，所述终端确定所述上行参考信号所在的时域符号中不允许承载数据。
  17. 根据权利要求13所述的终端，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的发射功率；
    所述处理器具体用于：
    当所述上行传输的发射功率大于第三门限时，确定所述上行参考信号所在的时域符号中不允许承载数据。
  18. 根据权利要求13所述的终端，其特征在于：
    所述指示信息指示的上行传输的配置包括所述上行传输的上行参考信号；
    所述处理器具体用于：
    当所述上行传输的上行参考信号不支持与数据进行频率复用时，默认所述上行参考信号所在的时域符号中不允许承载数据。
  19. 根据权利要求14至18中任一所述的终端，其特征在于：
    所述时域符号中不允许承载数据，包括：
    所述时域符号中用于所述上行传输的全部频域资源被所述上行参考信号占用；或者，
    所述时域符号中用于所述上行传输的部分频域资源被所述上行参考信号占用，且所述时域符号中未被所述上行参考信号占用的频域资源不允许承载数据。
  20. 一种网络设备，其特征在于，所述网络设备包括：发送器、接收器和处理器；所述处理器结合所述发送器和所述接收器执行：
    向终端发送配置信息，所述配置信息用于指示上行参考信号所在的时域符号中是否允许承载数据；
    接收所述终端发送的所述上行信号。
  21. 根据权利要求20所述的网络设备，其特征在于：
    所述配置信息包括上行传输的调制阶数、上行传输的编码速率和上行传输的发射功率中的任一项或任意组合。
  22. 根据权利要求20所述的网络设备，其特征在于：
    所述配置信息包括所述上行参考信号是否支持与数据进行频率复用；
    所述处理器在所述发送器发送所述配置信息之前，还用于：
    确定所述上行参考信号是否支持与数据进行频率复用。
  23. 根据权利要求22所述的网络设备，其特征在于，所述处理器具体用于：
    当所述终端的功率余量小于第四门限时，确定所述上行传输的上行参考信号不支持与数据进行频率复用。
  24. 根据权利要求22所述的网络设备，其特征在于，所述处理器具体用于：
    当所述终端的信干噪比SINR小于第五门限时，确定所述上行传输的上行参考信号不支持与数据进行频率复用。
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