WO2020156485A1 - Procédé et appareil destinés à émettre un signal de référence - Google Patents

Procédé et appareil destinés à émettre un signal de référence Download PDF

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Publication number
WO2020156485A1
WO2020156485A1 PCT/CN2020/073999 CN2020073999W WO2020156485A1 WO 2020156485 A1 WO2020156485 A1 WO 2020156485A1 CN 2020073999 W CN2020073999 W CN 2020073999W WO 2020156485 A1 WO2020156485 A1 WO 2020156485A1
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Prior art keywords
reference signal
transmission power
characteristic value
generated
generated characteristic
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PCT/CN2020/073999
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English (en)
Chinese (zh)
Inventor
龚政委
徐修强
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华为技术有限公司
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Publication of WO2020156485A1 publication Critical patent/WO2020156485A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels

Definitions

  • This application relates to the field of communication technology, and more specifically, to a method and device for reference signal transmission.
  • IoT Internet of Things
  • IoT is an important application scenario for the next-generation mobile communication network 5G network.
  • the data transmission mode is also different from traditional mobile devices such as mobile phones.
  • the uplink transmission of the terminal device uses the traditional mode to achieve transmission, that is, the terminal device sends data by establishing a connection and rebuilding the security context.
  • the data packet to be transmitted by the terminal device is generally small.
  • the proportion of signaling overhead based on traditional mode transmission is relatively large, and the resource utilization rate is low. It is not conducive for operators to expand their business scope.
  • 5G networks have introduced scheduling-free transmission (or called unauthorized transmission) that can be used in the small packet data mode of IoT.
  • this type of transmission is mainly used for radio resource control (Radio Resource Control, RRC) terminal equipment, and the terminal equipment in the inactive/idle state does not establish an RRC connection with the network equipment.
  • RRC Radio Resource Control
  • the biggest feature of data transmission in this type of scenario is competing transmission, that is, different terminal devices may choose the same resource for data transmission, resulting in resource conflicts between terminal devices, and reference signals based on competitive transmission cannot be used for corresponding data transmission to terminal devices.
  • Performing accurate channel estimation and identification ultimately results in the network equipment being unable to accurately receive the corresponding data of the terminal equipment, resulting in a reduction in the reliability of data transmission and affecting normal communications.
  • the present application provides a method and device for reference signal transmission, which can improve the reliability of channel estimation and identification of data channels based on contention transmission.
  • a reference signal transmission method is provided.
  • the method provided in the first aspect may be executed by a terminal device, or may be executed by a chip configured in the terminal device, which is not limited in this application.
  • the method includes: the terminal device determines the transmission power of the reference signal, wherein the transmission power of the reference signal corresponds to the generation characteristic value used to generate the reference signal; the terminal device transmits the reference signal according to the transmission power.
  • the reference signal may be used for channel estimation of the data channel, and this type of reference signal is called a demodulation reference signal (DMRS).
  • DMRS demodulation reference signal
  • the reference signal can also be used for random access channel identification and timing estimation.
  • This type of reference signal is called a preamble.
  • This application associates the transmission power of the reference signal with the generated characteristic value used to generate the reference signal, so that the transmission power of the reference signal corresponding to the same generated characteristic value is the same, and the transmission power of the reference signal corresponding to different generated characteristic values is different.
  • the identification and detection performance of the network equipment to the terminal equipment has been improved, and the reliability of the channel estimation and identification of the data channel based on competition transmission is improved from the overall system.
  • the terminal device determining the transmit power of the reference signal includes: the terminal device determines the transmit power parameter according to a first mapping relationship, where the first mapping relationship includes using The corresponding relationship between the generated characteristic value of the reference signal and the transmission power parameter is generated; the terminal device determines the transmission power according to the transmission power parameter.
  • the first mapping relationship may be predefined by the system or configured by the network device.
  • different generated characteristic values correspond to different transmit power parameters; or in the first mapping relationship, different generated characteristic value groups Corresponding to different transmission power parameters, each generated characteristic value group corresponds to the same transmission power parameter, and each generated characteristic value group includes at least one generated characteristic value.
  • the generated characteristic value used to generate the reference signal corresponds to the transmission power parameter, and different generated characteristic values correspond to different transmission power parameters. Or, different generated characteristic value groups correspond to different transmission power parameters.
  • the terminal device determines a generated characteristic value among the pre-configured generated characteristic values, and determines the transmission power parameter corresponding to the generated characteristic value according to the first mapping relationship.
  • the same generated characteristic value or the same generated characteristic value group corresponds to the same transmission power parameter.
  • the generated feature value is the root sequence index value (root index) of the ZC (Zadoff–Chu) sequence or the random value of the pseudo-noise (Pseudo-Noise, PN) sequence Initialize the index value.
  • the transmission power parameter includes a target received power and/or a path loss compensation coefficient.
  • Different generated characteristic values correspond to different target received power and/or path loss compensation coefficients, and the terminal device determines the reference signal transmission power corresponding to the generated characteristic values according to the target received power and/or path loss compensation coefficient.
  • the terminal device determining the transmit power according to the transmit power parameter includes: the terminal device determines the transmit power P RS (n) according to at least one of the following formulas:
  • n is the number of the generated characteristic value or the generated characteristic value group
  • P 0 is the target received power
  • ⁇ is the path loss compensation coefficient
  • P 0 (n) is the target corresponding to the generated characteristic value or the generated characteristic value group with the number n
  • ⁇ n is the path loss compensation coefficient corresponding to the generated characteristic value or the generated characteristic value group numbered n
  • PL is the path loss value from the terminal device to the network device.
  • the transmit power of the reference signal can be determined. According to the formula, it can be seen that the transmission powers of the reference signals corresponding to different generated eigenvalue numbers or generated eigenvalue group numbers are different, and the reference signals corresponding to the same generated eigenvalue numbers or generated eigenvalue group numbers have the same transmission power. Improve the reliability of reference signal transmission as a whole.
  • the method further includes: the terminal device determines, according to the determined reference signal transmission power parameter, the transmission power used to transmit the data channel corresponding to the reference signal.
  • a method for transmitting a reference signal is provided.
  • the method provided in the second aspect may be executed by a network device, or may be executed by a chip configured in the network device, which is not limited in this application.
  • the method includes: the network device receives the reference signal sent by the terminal device; the network device determines the transmission power parameter of the candidate reference signal according to the generated characteristic value of the candidate reference signal; the network device detects according to the transmission power parameter of the candidate reference signal The reference signal.
  • the reference signal may include an orthogonal reference signal and a non-orthogonal reference signal.
  • the candidate reference signal needs to be determined according to the generated characteristic value of the candidate reference signal. Power parameter, and then detect the reference signal sent by the terminal device according to the transmission power parameter of the reference signal, and determine the reference signal sent by the terminal device.
  • the network device determines the transmit power parameter of the candidate reference signal according to the generation characteristic value of the candidate reference signal, including: the network device determines the transmission power parameter of the candidate reference signal according to the generation characteristic of the candidate reference signal The value and the first mapping relationship determine the transmit power parameter of the candidate reference signal, where the first mapping relationship includes the corresponding relationship between the generated feature value of the candidate reference signal and the transmit power parameter of the candidate reference signal.
  • different generated feature values correspond to different transmit power parameters; or in the first mapping relationship, different generated feature value groups Corresponding to different transmission power parameters, each generated characteristic value group corresponds to the same transmission power parameter, and each generated characteristic value group includes at least one generated characteristic value.
  • the generated feature value is the root sequence index value of the ZC sequence or the random initialization index value of the pseudo noise PN sequence.
  • the transmission power parameter includes an initial transmission power and/or a path loss compensation coefficient.
  • the network device receives the data channel corresponding to the reference signal sent by the terminal device according to the transmission power parameter corresponding to the detected reference signal.
  • a reference signal transmission device in a third aspect, includes a unit for executing each step in the method in the first aspect or any possible implementation of the first aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • a reference signal transmission device in a fourth aspect, includes a unit for executing each step in the method in the second aspect or any possible implementation of the second aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the terminal device further includes a transceiver. Further optionally, there are one or more processors.
  • the memory is one or more.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the network device executes the foregoing second aspect or any possible implementation method of the second aspect.
  • the network device further includes a transceiver. Further optionally, there are one or more processors.
  • the memory is one or more.
  • the foregoing memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the aforementioned transceiver may include a receiver and/or a transmitter.
  • the foregoing processor may be used for but not limited to baseband related processing
  • the transceiver may be used for but not limited to radio frequency transceiving.
  • the above-mentioned devices may be arranged on separate chips, or at least partly or all of them may be arranged on the same chip.
  • the transceiver includes a receiver and a transmitter, where the receiver and the transmitter can be provided on a receiver chip and a transmitter chip that are independent of each other, or can be integrated as a transceiver and then provided on the transceiver chip.
  • the processor can be further divided into an analog baseband processor and a digital baseband processor.
  • the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip.
  • a computer-readable storage medium stores computer instructions.
  • the terminal device executes the first aspect or any possible aspect of the first aspect. The method in the implementation mode.
  • a computer-readable storage medium stores a computer program, and when the computer program is executed by a terminal device, it is used to execute the first aspect or any one of the first aspect The method in the possible implementation mode.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed by a network device, it is used to execute the second aspect or any possible aspect of the second aspect. The method in the implementation mode.
  • a chip including a processor is provided.
  • the processor is used to read and execute a computer program stored in the memory to execute the method in the first aspect or any possible implementation manner of the first aspect.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip also includes a communication interface.
  • a chip including a processor is provided.
  • the processor is used to read and execute a computer program stored in the memory to execute the second aspect or any possible implementation method of the second aspect.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip also includes a communication interface.
  • the present application also provides a computer program product, the computer program product includes computer program code, when the computer program code runs on a terminal device, the terminal device can execute the first aspect and any of its possibilities The method in the implementation.
  • this application also provides a computer program product, the computer program product includes computer program code, when the computer program code runs on a network device, the network device can execute the second aspect and any one of its possibilities The method in the implementation.
  • Figure 1 is a schematic diagram of a possible network architecture to which an embodiment of the present application is applicable;
  • Figure 2 is a schematic diagram of the same target received power allocated for different reference signals
  • Fig. 3 is a schematic diagram of different target received power allocated for different reference signals generated based on the same root sequence index value
  • FIG. 4 is a schematic flowchart of a reference signal transmission method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the target received power of the reference signal sent by the method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the target received power of the reference signal sent by the method provided by another embodiment of the present application.
  • FIG. 7 is a schematic diagram of a missed detection rate of a method for transmitting a reference signal according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of an apparatus for implementing reference signal transmission provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal device suitable for an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of an apparatus for implementing reference signal transmission according to another embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of a network device suitable for an embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminals in the future evolution of public land mobile network (PLMN) Devices, etc., are not limited in the embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device in the embodiment of the application may be a device used to communicate with a terminal device.
  • the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) in the LTE system can also be the base station (nodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evoled) in the LTE system.
  • NodeB eNB or eNodeB
  • it can also be a wireless controller in the cloud radio access network (CRAN) scenario, or the network device can be a relay station, access point, vehicle-mounted device, wearable device, and 5G
  • the base station in the network for example, gNB or the network equipment in the future evolved PLMN network, etc. are not limited in the embodiment of the present application.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program that can be accessed from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • FIG. 1 is a schematic diagram of a possible network architecture to which an embodiment of the present application is applied.
  • the network architecture may include a base station 10, an IoT device 20, an IoT device 30, and an IoT device 40.
  • the dashed line shown in Fig. 1 indicates that communication can be performed between devices.
  • the IoT device 20 may be, for example, a sensor, and the IoT device 30 may be, for example, a smart meter.
  • the base station 10 may be a base station in a 2G communication system, a base station in a 3G or 4G communication system, or a base station in a 5G communication system.
  • the network architecture shown in FIG. 1 is only to help those skilled in the art to better understand the embodiments of the present application, and does not limit the scope of the embodiments of the present application.
  • the embodiment of the present application may also include a larger number of IoT devices or a smaller number of IoT devices, and the embodiment of the present application does not limit the types of IoT devices.
  • the terminal device When a terminal device in a communication system communicates with a network device, the terminal device needs to send a reference signal to the network device, so that the network device can distinguish the terminal device according to the difference of the reference signal.
  • the biggest feature of data transmission is resource competition between terminal devices, that is, a single terminal device randomly selects an available resource, and different terminal devices may select the same resource, resulting in resource conflicts between terminal devices. , Which makes the network equipment need to accurately identify the terminal equipment and accurately receive the data corresponding to each terminal equipment.
  • the reference signal can be used to identify the terminal device.
  • the smaller the correlation of the reference signal the smaller the interference between multiple terminal devices that send data at the same time, and the better the identification and detection performance of the network device to the terminal device.
  • the number of reference signals that can be used for a group of terminal devices to compete also called the capacity of reference signals
  • the probability that different terminal devices randomly select the same reference signal also called contention collision
  • the correlation between a group of mutually orthogonal reference signals is 0, but the number of orthogonal reference signals (ie reference signals used for a group of terminal equipment competition) is small, and it is difficult to apply to this large-scale In the user connection scenario, therefore, non-orthogonal reference signals are used in this scenario.
  • a large-capacity non-orthogonal reference signal is required.
  • the transmit power of different reference signals will also affect the correlation between the reference signals.
  • the target received power allocation mode of the reference signal is mainly divided into equal power allocation and unequal power allocation.
  • FIG. 2 shows a schematic diagram of allocating the same target received power to different reference signals
  • FIG. 3 shows a schematic diagram of allocating different target received powers to different reference signals generated based on the same root sequence index value.
  • the horizontal axis of the coordinate axis is the reference signal
  • the Zadoff-Chu (ZC) sequence is taken as an example of the sequence of the reference signal
  • the vertical axis is the received power when the reference signal reaches the network device.
  • the received power when the reference signal reaches the network device is the same in value as the target received power used when the terminal device sends the reference signal, and can also be understood as the target received power.
  • Different r represents different root sequence index values. For example, based on the same root sequence index value but based on different cyclic shift (CS) values, n ZC sequences can be generated, and each ZC sequence can be used as a reference signal sequence. Generally, different ZC sequences corresponding to different root sequence index values are non-orthogonal, and the cross-correlation value is greater than 0; ZC sequences corresponding to the same root sequence index value and different cyclic shift values are orthogonal , The cross-correlation value is 0.
  • the received power of all reference signals is the same.
  • the received power of the ZC sequences generated from the root sequence index value 1 to the root sequence index value r in FIG. 2 are all the same. Since the reference signals sent by different terminal devices have the same received power in the network device, the identification and detection performance of the terminal device by the network device mainly depends on the correlation coefficient between the reference signals. Since the correlation between different ZC sequences generated by the same root sequence index value through cyclic shift is 0, the correlation mainly depends on the correlation between the reference signals corresponding to different root sequence index values.
  • the embodiment of the present application provides a method for transmitting a reference signal.
  • the terminal device determines the transmission power of the reference signal according to the corresponding relationship between the transmission power parameter of the reference signal and the generated characteristic value of the reference signal, and according to the reference signal
  • the transmission power of the reference signal is transmitted, which improves the identification and detection performance of the terminal equipment of the network equipment based on the reference signal, thereby improving the reliability of channel estimation and identification of the data channel based on competition transmission.
  • FIG. 4 shows a schematic flowchart of a method 400 for transmitting a reference signal according to an embodiment of the present application.
  • the diagram 400 includes steps S410 to S490. Among them, S410 to S440 and S470 to S490 are optional steps. The steps in the method 400 are described in detail below with reference to FIG. 4.
  • the method 400 is described by taking a terminal device and a network device as an executor of the method 400 as an example.
  • the execution subject of the method 400 may also be a chip applied to a terminal device and a chip applied to a network device.
  • S410 The network device determines the first mapping relationship.
  • the first mapping relationship includes the corresponding relationship between the generated characteristic value used to generate the reference signal and the transmission power parameter.
  • the generated characteristic value may be the root sequence index value of the ZC sequence or the random initialization index value of the PN sequence, but the embodiment of the present application is not limited to this.
  • different generated characteristic values correspond to different transmit power parameters.
  • the type of the reference signal sequence is a ZC sequence
  • the root sequence index value of the ZC sequence is generated as the characteristic value, and accordingly, the root sequence index value numbered 0 corresponds to the transmission power parameter 0, and the root sequence numbered 1
  • the index value corresponds to transmission power parameter 1
  • the index value of the root sequence numbered N-1 corresponds to transmission power parameter N-1.
  • the generated characteristic value corresponds to the transmission power parameter one-to-one, that is, different generated characteristic values correspond to different transmission power parameters.
  • the root sequence index value set of the ZC sequence can be divided into multiple generated feature value groups.
  • the root sequence index value group numbered 0 includes the root sequence index value numbered 0 and the root sequence index value numbered 1, numbered
  • the root sequence index value group of 1 includes the root sequence index value of number 2 and the root sequence index value of number 3.
  • the root sequence index value group of number N-1 contains the root sequence index value of number 2N-2 and The index value of the root sequence numbered 2N-1.
  • Each generated feature value group corresponds to a transmission power parameter.
  • the root sequence index value group numbered 0 corresponds to transmission power parameter 0
  • the root sequence index value group numbered 1 corresponds to transmission power parameter 1.
  • the root sequence index value group numbered N-1 corresponds to the transmission power parameter N-1.
  • each generated characteristic value group corresponds to the same transmission power parameter.
  • each generated feature value group includes at least one generated feature value. For example, 2 different generated characteristic values may form a generated characteristic value group corresponding to a transmission power parameter, or 3 different generated characteristic values may form a generated characteristic value group corresponding to a transmission power parameter. There is no restriction on this.
  • the corresponding relationship between the generated characteristic value group and the transmission power parameter shown in Table 2 may be determined according to the following method.
  • five generated characteristic values r 0 , r 1 , r 2 , r 3 , and r 4 correspond to three transmission power parameters PC(0), PC(1), and PC(2).
  • the determined corresponding relationship between the generated characteristic value and the transmission power parameter is shown in Table 3.
  • the first mapping relationship may also be predefined by the system. At this time, step S410 may not be executed.
  • the reference signal generated based on different generated characteristic values or different generated characteristic value groups adopts different transmission power parameters, and based on the same generated characteristic value or Different reference signals generated by generating the characteristic value group adopt the same transmission power parameter, thereby improving the reliability of reference signal transmission.
  • ⁇ can be indicated or predefined by the network device, and the initial power P 0 is determined by the network Equipment instructions or pre-defined.
  • S420 The network device sends the first mapping relationship to the terminal device.
  • the terminal device may obtain the first mapping relationship from the system. At this time, step S420 may not be executed.
  • S430 The terminal device determines the generated characteristic value of the reference signal.
  • the terminal device determines the generation characteristic value of the reference signal sent by the terminal device from the pre-configured generation characteristic value set for generating the reference signal.
  • the terminal device determines the generated characteristic value of the reference signal, it may be determined by random selection.
  • the terminal device may also determine the generation characteristic value of the reference signal of the terminal device according to the coverage level information of the terminal device and a pre-configured generation characteristic value set for generating the reference signal.
  • a generated characteristic value corresponds to a coverage correlation indicator value of a terminal device. The lower the coverage level of the terminal device, the smaller the coverage association indicator value.
  • the terminal device selects the generated characteristic value corresponding to the overwrite association indication value. As shown in Table 5, an example of the correspondence between different generated feature values and the coverage associated indication value of the terminal device is given.
  • the method for obtaining the coverage level information of the terminal device may specifically be:
  • the network device transmits signals to different terminal devices, and the transmission power of each transmitted signal is the same.
  • Each terminal device measures the received signal after wireless transmission to obtain measurement parameters, and obtain coverage level information according to the measurement parameters. Terminal devices in different locations have different wireless transmission losses, resulting in coverage level information.
  • the measurement parameters of the terminal device include at least one of the following: reference signal receiving power (reference signal receiving power, RSRP) value, geometry (geometric metric) value or number, and interference plus noise ratio (signal to interference plus noise) ratio (SINR) value.
  • reference signal receiving power reference signal receiving power
  • RSRP reference signal receiving power
  • geometry geometry
  • SINR interference plus noise ratio
  • a coverage association indicator value corresponding to a generated feature value may be expressed as a peak to average power ratio (PAPR) or CM (cubic metric, cubic metric) value of the sequence generated by the generated feature value.
  • PAPR peak to average power ratio
  • CM cubic metric, cubic metric
  • the generated characteristic value with a smaller correlation indication value enables a terminal device with poor coverage to perform high-power data transmission when using the reference signal in this embodiment.
  • the generated feature value can be pressed
  • the coverage association indication value is sorted from largest to smallest.
  • the characteristic value with the larger sequence number is selected;
  • the generated feature values are sorted in the order of coverage association indication value from small to large, and when the coverage level of the terminal device is lower, the smaller the sequence number can be selected to generate feature values.
  • S440 The terminal device determines the transmit power parameter of the reference signal according to the first mapping relationship.
  • the terminal device After determining the generated characteristic value for generating the reference signal, the terminal device determines the transmission power parameter corresponding to the generated characteristic value of the reference signal according to the first mapping relationship.
  • the transmission power parameter includes the target received power P 0 and/or the path loss compensation coefficient ⁇ .
  • Different generated characteristic values correspond to different target received power P 0 and/or path loss compensation coefficient ⁇ .
  • each generated characteristic value or each generated characteristic value group corresponding to a transmit power parameter refers to a target received power and a path loss compensation coefficient.
  • the terminal device may determine the transmit power parameter corresponding to the generated characteristic value of the reference signal of the terminal device according to the first mapping relationship in any one of Table 1 to Table 2.
  • the first mapping relationship is shown in Table 1, and the generated feature value of the reference signal is numbered 1, and then according to Table 1, the transmit power parameter corresponding to the generated feature value of number 1 is transmit power parameter 1.
  • the first mapping relationship is shown in Table 2, and the generated feature value of the reference signal is numbered 1, then according to Table 2, the generated feature value numbered 1 belongs to the generated feature value group numbered 0, and the corresponding sent
  • the power parameter is the transmission power parameter 0.
  • Table 1 and Table 2 only show the two correspondences between the generated characteristic value used to generate the reference signal and the transmission power parameter in the embodiments of the present application. In practice, there may also be other correspondences, as long as the transmission power parameter is The generated characteristic value of the reference signal only needs to be corresponding, which is not limited in the embodiment of the present application.
  • S450 The terminal device determines the transmission power of the reference signal.
  • the terminal device After determining the transmission power parameter of the reference signal according to the generated characteristic value of the reference signal and the first mapping relationship, the terminal device determines the transmission power of the reference signal according to the transmission power parameter of the reference signal.
  • the terminal device determines the generated characteristic value number n of the reference signal or the transmission power P RS (n) corresponding to the generated characteristic value group according to any one of formulas (1) to (3):
  • n is the number of the generated characteristic value or the generated characteristic value group
  • P 0 is the target received power
  • ⁇ is the path loss compensation coefficient
  • P 0 (n) is the target corresponding to the generated characteristic value or the generated characteristic value group with the number n
  • ⁇ n is the path loss compensation coefficient corresponding to the generated characteristic value or the generated characteristic value group numbered n
  • PL is the path loss value from the terminal device to the network device.
  • P 0 (n) can be obtained according to formula (4):
  • ⁇ n is the power offset corresponding to the generated eigenvalue or the generated eigenvalue group numbered n.
  • Different generated characteristic values correspond to different power biases. It can be seen from equation (4) that different target received power P 0 (n) corresponding to different generated eigenvalues or different generated eigenvalue groups can be determined by a same target received power P 0 and different power bias ⁇ n is determined.
  • the transmission power parameter corresponding to the generated characteristic value of the terminal device reference signal is determined.
  • the transmission power parameters corresponding to different reference signals generated based on different generated feature values or different generated feature value groups are made different, and the transmission power parameters corresponding to different reference signals generated based on the same generated feature value or the same generated feature value group are the same, which improves
  • the recognition performance of network equipment to terminal equipment improves the reliability of reference signal transmission from the system as a whole.
  • FIG. 5 shows a schematic diagram of the target received power of the reference signal generated based on different generated characteristic values sent by the method 400 provided by an embodiment of the present application.
  • different reference signals generated based on the same generated feature value have the same target received power
  • different reference signals generated based on different generated feature values have different target received powers.
  • FIG. 6 shows a schematic diagram of the target received power of the reference signal generated based on different generated characteristic value groups sent by the method 400 provided by another embodiment of the present application.
  • the target received powers of different reference signals generated based on the same generated feature value group are the same, and the target received powers of different reference signals generated based on different generated feature value groups are different.
  • generated eigenvalue 1 and generated eigenvalue 2 belong to the same generated eigenvalue group
  • the target received power of the corresponding reference signal is the same
  • generated eigenvalue r and r-1 generated eigenvalue 2 belong to the same generated eigenvalue group
  • the target received power of the corresponding reference signal is the same
  • the generated characteristic value 1 and the generated characteristic value r belong to different generated characteristic value groups
  • the target received power of the corresponding reference signal is different.
  • the terminal device sends a reference signal to the network device.
  • the terminal device After the terminal device determines the transmission power of the reference signal of the terminal device, it sends the reference signal to the network device at the transmission power.
  • the terminal device determines the transmission power of the data channel corresponding to the reference signal according to the transmission power parameter used to determine the transmission power of the reference signal.
  • the same transmission power parameter is used to transmit the reference signal, and the reference is determined according to any one of formulas (1) to (3) The transmit power of the signal. After the sent reference signal reaches the same network device, the target received power of the corresponding reference signal is the same.
  • the reference signal is sent with unequal power, that is, after the reference signal reaches the same network device, the corresponding reference signal The target received power is different.
  • the received signal received by the network device is:
  • H n is the channel information of the nth terminal device (1 ⁇ n ⁇ N)
  • S n is the reference signal of the nth terminal device (1 ⁇ n ⁇ N)
  • P target_n (1 ⁇ n ⁇ N) is the target received power corresponding to the reference signal of the nth terminal device
  • e is the noise vector.
  • N reference signals are generated based on the same generated feature value, their corresponding target received power is the same, then the correlation between these N reference signals depends on the correlation between the sequences of the reference signals, However, the sequences of different reference signals generated based on the same generated eigenvalue are orthogonal. Therefore, the N reference signals have lower correlation. If N reference signals are generated based on different generated characteristic values, their corresponding target received powers may be different. Then the correlation between these N reference signals depends on the ratio and the target received power of different reference signals. The correlation between the sequences of the reference signals can be properly designed so that the ratio between the target received powers of different reference signals can improve the identification and detection performance of the reference signals.
  • the transmission power parameter of the reference signal of the terminal device may also be used to determine the transmission power of other channels, and the other channels may be physical uplink shared channels (PUSCH). ), the embodiment of the application does not limit this.
  • PUSCH physical uplink shared channels
  • the transmission power of the reference signal is determined by the target received power P 0 (n) and/or the path loss compensation coefficient ⁇ n , and at least one of P 0 (n) and ⁇ n is used to determine the PUSCH transmission power.
  • S470 The network device determines the transmit power parameter of the candidate reference signal according to the generated characteristic value of the candidate reference signal.
  • the network device Since the signal received by the network device may be a superposition of various reference signals, in order to accurately receive the data sent by each terminal device, the network device needs to identify and detect the terminal device based on the reference signal. However, the network device does not know the specific reference signal sent by the terminal device. Therefore, the network device needs to perform a blind check to determine which reference signal the terminal device sends.
  • the network device uses a pre-configured reference signal as a candidate reference signal, and determines the transmit power parameter of the candidate signal according to the generated characteristic value of the candidate reference signal in the first mapping relationship.
  • the pre-configured reference signal numbers are 1 to 100, corresponding to 10 generated feature values, that is, the generated feature value numbered 0 corresponds to reference signals 1 to 10, and the generated feature value numbered 1 corresponds to reference signals 11 to 20,
  • the generated feature values numbered 9 correspond to reference signals 91 to 100.
  • Reference signals 1 to 100 are 100 candidate signals.
  • the network device After receiving the reference signal sent by the terminal device, the network device determines the transmission power parameter corresponding to the 100 candidate reference signals according to the generated feature values corresponding to the 100 candidate signals and the first mapping relationship.
  • the corresponding relationship between the generated feature values of candidate reference signals and the transmit power parameters of candidate reference signals is shown in Table 1.
  • the generated feature values of candidate reference signals 1 to 10 are generated feature values numbered 0, and according to the first mapping relationship,
  • the transmission power parameters of the candidate reference signals 1 to 10 are transmission power parameter 0.
  • S480 The network device detects the reference signal according to the transmit power parameter of the candidate reference signal.
  • the network device After determining the transmission power parameter of the candidate reference signal, the network device determines the transmission power of the candidate reference signal. The network device also needs to determine which reference signal is sent by the terminal device from a plurality of possible candidate reference signals.
  • the network device determines the transmission power of the reference signal corresponding to the generated feature value of the reference signal number 0, since the generated feature value of the reference signal number 0 corresponds to candidate reference signals 1 to 10, the network device needs to determine the terminal device Which one or several combinations of candidate reference signals 1 to 10 are the transmitted reference signals.
  • the network device may determine the transmit power parameter (for example, target received power) of the candidate reference signal, and determine the candidate reference signal or a combination of candidate reference signals and the reference signal received by the network device according to the transmit power parameter
  • the candidate reference signal or the candidate reference signal combination with the highest correlation is the reference signal sent by the terminal device.
  • the generated feature value of the pre-configured reference signal numbered 0 corresponds to candidate reference signals 1 to 10
  • the reference signal sent by the terminal device 1 may be one or more of the candidate reference signals corresponding to the generated feature value numbered 0 ,
  • the network equipment according to the determined transmission power parameters and possible candidates
  • the correlation with the received signal Y of the network device is sequentially obtained, and the reference signal of the terminal device is the highest correlation. For example, if ⁇ candidate reference signal 1 ⁇ has the highest correlation with the received signal Y, it is determined that ⁇ candidate reference signal 1 ⁇ is the reference signal sent by the terminal device.
  • the network device determines the reference signal sent by each communicating terminal device.
  • the network device receives the data channel corresponding to the reference signal sent by the terminal device according to the transmission power parameter corresponding to the detected reference signal.
  • the network device After performing step 480, the network device detects the reference signal sent by the terminal device, and the network device receives the data channel corresponding to the reference signal sent by the terminal device according to the transmission power parameter corresponding to the detected reference signal.
  • the network device determines the data channel corresponding to the reference signal sent by the receiving terminal device according to the detected reference signal and a transmission power parameter based on the reference signal.
  • a sequence of mixed reference signals composed of a sequence of 200 non-orthogonal reference signals and a sequence of orthogonal reference signals is used as the sequence of the reference signal of the terminal device, and the network device performs identification and detection on 10 terminal devices to obtain
  • FIG. 7 a schematic diagram of the missed detection rate of the terminal device identified by the network device based on the reference signal.
  • the abscissa is the signal-noise ratio (SNR) of the sequence of the reference signal
  • the unit is dB
  • the ordinate is the miss detection rate (miss detection).
  • Line a and line c respectively represent the relationship between the signal-to-noise ratio and missed detection rate of the reference signal sent with the same transmission power parameter
  • line b and line d represent the signal-to-noise ratio of the reference signal sent based on the method provided in the embodiment of the application.
  • the network equipment misses the detection of the terminal equipment
  • the rate is lower than the missed detection rate of the network device to the terminal device when the reference signal is sent with the same transmission power parameter, and the detection performance of the network device to the terminal device is improved, thereby improving the reliability of channel estimation and identification of the data channel based on competition transmission.
  • the terminal equipment equipment and the network equipment include hardware structures and/or software modules corresponding to the respective functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • FIG. 8 is a schematic diagram of a reference signal transmission device 10 provided in the present application. As shown in FIG. 8, the device 10 includes a processing unit 910 and a transceiver unit 920.
  • the apparatus 10 may be a terminal device corresponding to the method 400.
  • the processing unit 910 is configured to determine the transmission power of the reference signal, where the transmission power of the reference signal corresponds to the generation characteristic value used to generate the reference signal.
  • the transceiver unit 920 is configured to send the reference signal according to the transmission power.
  • the transmission power of the reference signal corresponding to the same generated characteristic value is the same, and the transmission power of the reference signal corresponding to different generated characteristic values is different.
  • the transmission power of the orthogonal reference signal is not reduced while the transmission power of the non-orthogonal signal is different.
  • the identification and detection performance of the network equipment to the terminal equipment is improved, and the channel estimation and the data channel based on the competition transmission are improved from the system as a whole. Reliability of recognition.
  • the processing unit 910 is specifically configured to determine the transmission power parameter according to a first mapping relationship, where the first mapping relationship includes a corresponding relationship between the generated characteristic value used to generate the reference signal and the transmission power parameter;
  • the transmit power parameter determines the transmit power.
  • the first mapping relationship may be pre-defined by the system or configured by the network device.
  • different generated feature values correspond to different transmit power parameters; or different generated feature value groups correspond to different transmit power parameters, wherein each generated feature value group includes at least one generated feature value.
  • the generated characteristic value corresponds to the transmission power parameter
  • different generated characteristic values correspond to different transmission power parameters.
  • different generated characteristic value groups correspond to different transmission power parameters.
  • the generated characteristic value sequence pre-configured by the terminal device a generated characteristic value is determined, and the transmission power parameter corresponding to the generated characteristic value is determined according to the first mapping relationship.
  • the same generated characteristic value or the same generated characteristic value group corresponds to the same transmission power parameter.
  • the generated characteristic value is a root sequence index value of a ZC sequence or a random initialization index value of a pseudo noise PN sequence.
  • the transmit power parameter includes target received power and/or path loss compensation coefficient.
  • Different generated characteristic values correspond to different target received power and/or path loss compensation coefficients, and the terminal device determines the reference signal transmission power corresponding to the generated characteristic values according to the target received power and/or path loss compensation coefficient.
  • the processing unit 910 is specifically configured to determine the transmission power of the reference signal according to any one of formulas (1) to (3). .
  • the transmission power parameters of the reference signal corresponding to the generated feature value number or the generated feature value group of different numbers are different, and the generated feature value or generated feature value of the same number is different
  • the transmission power parameters of the reference signals corresponding to the groups are the same, so that the identification and detection performance of the network equipment to the terminal equipment is improved, and the reliability of the reference signal transmission is improved from the overall system.
  • the processing unit 910 is further configured to determine the transmission power of the data channel corresponding to the reference signal according to the determined transmission power parameter used for the transmission power of the reference signal.
  • FIG. 9 is a schematic structural diagram of a terminal device 20 applicable to an embodiment of the present application.
  • the terminal device 20 can be applied to the network architecture shown in FIG. 1.
  • FIG. 9 only shows the main components of the terminal device.
  • the terminal device 20 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is used to control the antenna and the input and output device to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory to execute the corresponding process and/or executed by the terminal device in the communication method proposed in this application. Or operation. I won't repeat them here.
  • FIG. 9 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • FIG. 10 is a schematic diagram of a reference signal transmission device 30 proposed in the present application.
  • the device 30 includes a transceiver unit 1110 and a processing unit 1120.
  • the apparatus 30 may be a network device corresponding to the method 400.
  • the transceiver unit 1110 is configured to receive a reference signal sent by a terminal device.
  • the processing unit 1120 is configured to determine the transmit power parameter of the candidate reference signal according to the generated characteristic value of the candidate reference signal.
  • the processing unit 1120 is further configured to detect the reference signal according to the transmit power parameter of the candidate reference signal.
  • the network device determines the transmission power parameter of the candidate signal according to the generated characteristic value of the candidate reference signal, and then according to the transmission power parameter and candidate reference signal of the candidate reference signal.
  • the reference signal detects the received reference signal to determine the reference signal of the terminal device, thereby realizing accurate reception of terminal device data, and improving the reliability of channel estimation and identification of the data channel based on competition transmission.
  • the processing unit 1120 is specifically configured to determine the transmit power parameter of the candidate reference signal according to the generated feature value of the candidate reference signal and a first mapping relationship, where the first mapping relationship includes the generated feature value of the candidate reference signal Correspondence with the transmit power parameter of the candidate reference signal.
  • different generated characteristic values correspond to different transmission power parameters; or different generated characteristic value groups correspond to different transmission power parameters, each generated characteristic value group corresponds to the same transmission power parameter, and each generated characteristic value group contains a reference At least one of the signals generates a characteristic value.
  • the generated characteristic value is a root sequence index value of a ZC sequence or a random initialization index value of a pseudo-noise PN sequence.
  • the transmission power parameter includes initial transmission power and/or path loss compensation coefficient.
  • the transceiver unit 1110 is further configured to receive the data channel corresponding to the reference signal sent by the terminal device according to the transmission power parameter corresponding to the detected reference signal.
  • the device 30 completely corresponds to the network device in the method embodiment, and the corresponding unit of the device 30 is used to execute the corresponding steps executed by the network device in the method embodiment shown in FIG. 4.
  • FIG. 11 is a schematic structural diagram of a network device 40 applicable to an embodiment of the present application, which can be used to implement the function of the network device in the above-mentioned reference signal transmission method.
  • a network device 40 can be a schematic diagram of the structure of the base station.
  • the network device can be applied to the network structure shown in Figure 1.
  • the network device 40 may include one or more radio frequency units, such as a remote radio unit (RRU) 401 and one or more base band units (BBU).
  • the baseband unit may also be referred to as a digital unit (DU) 402.
  • the RRU 401 may be called a transceiver unit, which corresponds to the transceiver unit 1110 in FIG. 10.
  • the transceiver unit 401 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 4011 and a radio frequency unit 4012.
  • the transceiving unit 401 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit).
  • the RRU 401 part is mainly used for receiving and sending radio frequency signals and conversion between radio frequency signals and baseband signals, for example, for sending the first mapping relationship to the terminal device.
  • the BBU402 part is mainly used to perform baseband processing, control the base station, and so on.
  • the RRU 401 and the BBU 402 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 402 is the control center of the network equipment, and may also be called a processing unit, which may correspond to the processing unit 1120 in FIG. 10, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 402 may be used to control the network device 40 to execute the operation flow of the network device in the foregoing method embodiment, for example, to determine the first mapping relationship.
  • the BBU 402 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network of a single access standard (for example, an LTE system, or a 5G system), or may respectively support different Access standard wireless access network.
  • the BBU 402 further includes a memory 4021 and a processor 4022.
  • the memory 4021 is used to store necessary instructions and data.
  • the memory 4021 stores the codebook in the above-mentioned embodiment and the like.
  • the processor 4022 is used to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 4021 and the processor 4022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the network device 40 shown in FIG. 11 can implement the network device functions involved in the method embodiment of FIG. 4.
  • the operations and/or functions of each unit in the network device 40 are respectively for implementing the corresponding processes executed by the network device in the method embodiment of the present application. To avoid repetition, detailed description is omitted here.
  • the structure of the network device illustrated in FIG. 11 is only a possible form, and should not constitute any limitation in the embodiment of the present application. This application does not exclude the possibility of other network device structures that may appear in the future.
  • the embodiment of the present application also provides a communication system, which includes the aforementioned network device and one or more terminal devices.
  • the present application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • the computer executes each of the terminal devices in the method shown in FIG. 4 step.
  • the present application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • the computer executes each of the operations performed by the network device in the method shown in FIG. 4 step.
  • the present application also provides a computer program product containing instructions.
  • the computer program product runs on a computer, the computer executes the steps performed by the terminal device in the method shown in FIG. 4.
  • This application also provides a computer program product containing instructions.
  • the computer program product runs on a computer, the computer executes the steps performed by the network device in the method shown in FIG. 4.
  • This application also provides a chip including a processor.
  • the processor is used to read and run the computer program stored in the memory to execute the corresponding operation and/or process executed by the terminal device in the communication method provided in this application.
  • the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used to read and execute the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive data and/or information that needs to be processed, and the processor obtains the data and/or information from the communication interface, and processes the data and/or information.
  • the communication interface can be an input and output interface.
  • This application also provides a chip including a processor.
  • the processor is used to call and run the computer program stored in the memory to execute the corresponding operation and/or process executed by the network device in the communication method provided in this application.
  • the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used to read and execute the computer program in the memory.
  • the chip further includes a communication interface, and the processor is connected to the communication interface.
  • the communication interface is used to receive data and/or information that needs to be processed, and the processor obtains the data and/or information from the communication interface, and processes the data and/or information.
  • the communication interface can be an input and output interface.
  • the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the technology of the application Integrated circuits for program execution, etc.
  • the processor may be a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, etc.
  • the processor can allocate the control and signal processing functions of the terminal device or the network device among these devices according to their respective functions.
  • the processor may have a function of operating one or more software programs, and the software programs may be stored in the memory.
  • the function of the processor can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the memory can be read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, optical disk storage ( Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can Any other medium accessed by the computer, etc.
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • optical disk storage Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • magnetic disk storage media or other magnetic storage devices or can be used to carry or store desired program codes in the form of instructions or data structures and can Any other medium
  • the memory and the memory involved in the foregoing embodiments may be physically independent units, or the memory and the processor may also be integrated.
  • At least one refers to one or more
  • multiple refers to two or more.
  • And/or describes the association relationship of the associated object, indicating that there can be three types of relationships, for example, A and/or B can indicate the situation where A exists alone, A and B exist at the same time, and B exists alone. Among them, A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • “The following at least one item” and similar expressions refer to any combination of these items, including any combination of single items or plural items.
  • At least one of a, b, and c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation.
  • multiple units or components can be combined or integrated into another system, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may not be physically separated, and the components displayed as units may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the technical solution of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

La présente invention concerne un procédé et un appareil destinés à émettre un signal de référence. Le procédé consiste : à déterminer, au moyen d'un dispositif terminal, une puissance d'émission afin d'émettre un signal de référence, la puissance d'émission pour le signal de référence correspondant à une valeur de caractéristique de génération utilisée pour générer le signal de référence ; et à envoyer, au moyen du dispositif terminal, le signal de référence conformément à la puissance d'émission. La solution technique fournie dans la présente invention peut augmenter la fiabilité d'estimation de canal d'un canal de données basé sur la contention ainsi que l'identification d'un dispositif terminal.
PCT/CN2020/073999 2019-02-01 2020-01-23 Procédé et appareil destinés à émettre un signal de référence WO2020156485A1 (fr)

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