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WO2022151111A1 - Procédé de configuration de signaux, dispositif de terminal, dispositif de réseau, puce, et support de stockage - Google Patents

Procédé de configuration de signaux, dispositif de terminal, dispositif de réseau, puce, et support de stockage Download PDF

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Publication number
WO2022151111A1
WO2022151111A1 PCT/CN2021/071619 CN2021071619W WO2022151111A1 WO 2022151111 A1 WO2022151111 A1 WO 2022151111A1 CN 2021071619 W CN2021071619 W CN 2021071619W WO 2022151111 A1 WO2022151111 A1 WO 2022151111A1
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WIPO (PCT)
Prior art keywords
dmrs
time domain
parameter
configuration information
terminal device
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Ceased
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PCT/CN2021/071619
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English (en)
Chinese (zh)
Inventor
崔胜江
贺传峰
徐伟杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2021/071619 priority Critical patent/WO2022151111A1/fr
Priority to CN202180075024.1A priority patent/CN116438887A/zh
Publication of WO2022151111A1 publication Critical patent/WO2022151111A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communications, and more particularly, to a signal configuration method, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product, and a computer program.
  • an Aggregation Factor (Aggregation Factor) is defined to control the number of repeated data transmissions.
  • the aggregation factor is greater than 1, the sender device sends the same data multiple times.
  • a demodulation reference signal (Demodulation Reference Signal, DMRS) is used for data demodulation.
  • DMRS Demodulation Reference Signal
  • all channels need to be demodulated with DMRS.
  • uneven distribution of DMRS is likely to occur in the time domain range of repeated data transmission, which affects the accuracy of channel estimation and demodulation.
  • embodiments of the present application provide a signal configuration method, terminal device, network device, chip, computer-readable storage medium, computer program product, and computer program, which can be used to configure DMRS and improve the accuracy of channel estimation and demodulation.
  • An embodiment of the present application provides a signal configuration method, including:
  • the terminal device receives the first parameter sent by the network device
  • the terminal device determines the first demodulation reference signal DMRS configuration information according to the first parameter; wherein, the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range, and the first time domain range is used for repeated transmission first data.
  • An embodiment of the present application provides a signal configuration method, which is applied to a network device, including:
  • the network device sends the first parameter to the terminal device; wherein the first parameter is used to determine the first DMRS configuration information, and the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range, and the first time domain range Used to repeatedly transmit the first data.
  • the embodiment of the present application also provides a terminal device, including:
  • a first communication module configured to receive the first parameter sent by the network device
  • a first processing module configured to determine the first demodulation reference signal DMRS configuration information according to the first parameter; wherein, the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range, the first time domain The range is used to repeatedly transmit the first data.
  • the embodiment of the present application also provides a network device, including:
  • the second communication module is configured to send the first parameter to the terminal device; wherein, the first parameter is used to determine the first DMRS configuration information, and the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range, The first time domain range is used to repeatedly transmit the first data.
  • An embodiment of the present application further provides a terminal device, including: a processor and a memory, where the memory is used to store a computer program, and the processor invokes and runs the computer program stored in the memory to execute the above signal configuration method.
  • An embodiment of the present application further provides a network device, including: a processor and a memory, where the memory is used to store a computer program, the processor invokes and runs the computer program stored in the memory, and executes the above signal configuration method.
  • An embodiment of the present application further provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device on which the chip is installed executes the above signal configuration method.
  • Embodiments of the present application further provide a computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the above signal configuration method.
  • Embodiments of the present application further provide a computer program product, including computer program instructions, wherein the computer program instructions cause a computer to execute the above signal configuration method.
  • the embodiment of the present application further provides a computer program, the computer program enables a computer to execute the above signal configuration method.
  • the terminal device can determine, according to the first parameter sent by the network device, the first DMRS configuration information used in the first time domain range of repeated data transmission, and therefore, the situation of uneven distribution of DMRS can be avoided , to improve the accuracy of channel estimation and demodulation.
  • FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.
  • FIG. 2A is a DMRS pattern corresponding to PUSCH mapping type A in an embodiment of the present application.
  • FIG. 2B is a DMRS pattern corresponding to PUSCH mapping type B in the embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a signal configuration method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a signal configuration method according to another embodiment of the present application.
  • FIG. 5A is another DMRS pattern corresponding to PUSCH mapping type A in the embodiment of the present application.
  • FIG. 5B is another DMRS pattern corresponding to PUSCH mapping type B in the embodiment of the present application.
  • FIG. 6 is a schematic diagram of offset processing in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a cyclic offset in an embodiment of the present application.
  • FIG. 8 is a schematic time sequence diagram of repeated data transmission in an embodiment of the present application.
  • FIG. 9 is a schematic structural block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural block diagram of a network device according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a chip according to an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • CDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • Wireless Fidelity Wireless Fidelity
  • WiFi fifth-generation communication
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA standalone
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • STAION, ST in the WLAN
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • a mobile phone Mobile Phone
  • a tablet computer Pad
  • a computer with a wireless transceiver function a virtual reality (Virtual Reality, VR) terminal device
  • augmented reality (Augmented Reality, AR) terminal Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network device may be a satellite or a balloon station.
  • the satellites may be low earth orbit (low earth orbit, LEO) satellites, medium earth orbit (medium earth orbit, MEO) satellites, geostationary earth orbit (geostationary earth orbit, GEO) satellites, high elliptical orbit (High Elliptical Orbit, HEO) satellites ) satellite etc.
  • the network device may also be a base station set in a location such as land or water.
  • a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device (
  • the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • Pico cell Femto cell (Femto cell), etc.
  • These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • FIG. 1 schematically shows one network device 1100 and two terminal devices 1200.
  • the wireless communication system 1000 may include a plurality of network devices 1100, and the coverage of each network device 1100 may include other numbers terminal equipment, which is not limited in this embodiment of the present application.
  • the wireless communication system 1000 shown in FIG. 1 may also include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF). This is not limited in the application examples.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • a data repeat transmission mechanism In the NR system, in order to improve the reliability of data transmission, a data repeat transmission mechanism is designed.
  • RRC Radio Resource Control, Radio Resource Control
  • the aggregation factor (pdsch-AggregationFactor) and the aggregation factor for PUSCH (pusch-AggregationFactor) are two parameters. These two parameters are respectively used to control the number of times of data retransmission of PDSCH and PUSCH.
  • pdsch-AggregationFactor and pusch-AggregationFactor are equal to 1 by default. In practical applications, they can be configured as 2, 4, or 8. In the case of pdsch-AggregationFactor>1 or pusch-AggregationFactor>1, the same symbol configuration will be used in pdsch-AggregationFactor or pusch-AggregationFactor consecutive time slots to perform multiple operations on the same Transport Block (TB). times sent.
  • TB Transport Block
  • RV redundancy Version
  • DCI Downlink control information
  • the number RV id of the redundancy version is determined according to the RV id information indicated by the DCI, as shown in Table 2 below:
  • DMRS data demodulation.
  • all channels need to be demodulated by DMRS.
  • the DMRS configuration in the NR system fully demonstrates the flexibility principle of NR.
  • two DMRS mapping types are designed in the NR system, including Type A (TypeA) and Type B (TypeB).
  • the mapping position of the first column of DMRS also referred to as preamble DMRS or preamble DMRS
  • the NR system also proposes the concept of Additional DMRS (Additional DMRS). The NR system obtains more accurate channel estimation accuracy by selectively determining more time-domain locations to configure additional DMRS.
  • the position of the DMRS in the time slot can be determined according to Table 3 and Table 4 below.
  • the position of the DMRS is represented by the serial number (ordered from 0) of the symbol where the DMRS is located in the time slot.
  • l 0 is the start position of the DMRS in the time slot.
  • the parameter dmrs-AdditionalPosition characterizes the symbol requirements of the DMRS.
  • the mapping type is TypeA
  • the inventor of the present application finds that when data is repeatedly transmitted, multiple time slots are used to repeatedly transmit data, and at this time, the same DMRS configuration is used for each time slot. Based on the above DMRS configuration table, there is a situation where the symbol where the first column of DMRS (preamble DMRS) is located is far away from the symbol where the additional DMRS is located, and the channel estimation and demodulation based on DMRS have insufficient accuracy.
  • preamble DMRS preamble DMRS
  • FIG. 2A shows a DMRS pattern that uses PUSCH mapping type A to repeatedly transmit data in multiple time slots
  • FIG. 2B shows that using PUSCH mapping type B
  • the DMRS pattern that transmits the data repeatedly for each time slot. It can be seen that no matter whether the mapping type A or the mapping type B is adopted, the preamble DMRS and the additional DMRS are far apart. At this time, in a single time slot, for example, in retransmission time slot n or retransmission time slot (n+1), the symbols located between the preamble DMRS and the additional DMRS have lower accuracy in channel estimation and demodulation. The symbols on both sides (including the symbols before the preamble DMRS and/or the symbols after the additional DMRS).
  • FIG. 3 is a schematic flowchart of a signal configuration method according to an embodiment of the present application. The method is applied to terminal equipment, including:
  • the terminal device receives the first parameter sent by the network device
  • the terminal device determines the first DMRS configuration information according to the first parameter; wherein, the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range, and the first time domain range is used to repeatedly transmit the first DMRS. data.
  • FIG. 4 is a schematic flowchart of a signal configuration method according to another embodiment of the present application. The method is applied to network devices, including:
  • the network device sends the first parameter to the terminal device; wherein the first parameter is used to determine the first DMRS configuration information, and the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range.
  • the domain range is used to repeatedly transmit the first data.
  • the terminal device can determine the first DMRS configuration information used in the first time domain range of the repeated data transmission according to the first parameter sent by the network device. Therefore, it is possible to avoid uneven distribution of the DMRS. It can improve the accuracy of channel estimation and demodulation.
  • the first data may include PDSCH and/or PUSCH.
  • the terminal device determines the first DMRS configuration information according to the first parameter, determines the time domain position for receiving the DMRS in the first time domain range according to the first DMRS configuration information, and performs the process based on this. DMRS mapping and data reception.
  • the terminal device determines the first DMRS configuration information according to the first parameter, determines the time domain position for sending the DMRS in the first time domain range according to the first DMRS configuration information, and performs DMRS mapping and data based on this send.
  • the number of times of repeated transmission of the first data and/or the first time domain range is determined based on the aggregation factor.
  • the first DMRS configuration information may include or correspond to one or more DMRS time domain locations.
  • the unit of the DMRS time domain position may be a symbol, and correspondingly, the DMRS time domain position may be represented based on the sequence number of the symbol in which the DMRS is located in the time slot.
  • the first parameter may be other parameters except the mapping type (Mapping Type), the data duration 1 d , and DMRS requirement information such as the parameter dmrs-AdditionalPosition.
  • the first DMRS configuration information may include at least one DMRS time domain location obtained based on a predetermined rule and the first parameter.
  • the terminal device can query the pre-configured DMRS configuration table according to the resource allocation information such as the mapping type (Mapping Type), the data duration 1 d and the DMRS requirement information to obtain one or more DMRS time domain positions, and then based on the first parameter or multiple DMRS time domain locations for processing to obtain first DMRS configuration information.
  • the mapping type Mapping Type
  • the first DMRS configuration information may include at least one pre-configured DMRS configuration table.
  • the terminal device may determine at least one in the first time domain according to the first DMRS configuration information, the mapping type of the first data, the duration 1 d of the first data, and the DMRS requirement information of the first data, such as the parameter dmrs-AdditionalPosition, etc.
  • the time domain location of the DMRS may include at least one pre-configured DMRS configuration table.
  • each DMRS configuration table in the first DMRS configuration information includes multiple DMRS time domain positions corresponding to different resource allocation information, and the resource allocation information includes mapping type, DMRS requirement information such as parameter dmrs-AdditionalPosition, data duration 1 at least one of d .
  • Multiple configuration tables may correspond to at least one of different data types (or channel types), DMRS symbol types, and frequency hopping types, for example, multiple configuration tables include a single-symbol PUSCH DMRS configuration table without frequency hopping, Symbol PUSCH DMRS configuration table, etc.
  • the terminal device may determine the first DMRS configuration information according to the first parameter, and then according to the data type of the first data, the DMRS symbol type, the frequency hopping type, the mapping type of the first data, the duration 1 d of the first data, and the first At least one parameter in the DMRS requirement information of the data determines the time domain position of the DMRS of the first data from the first DMRS configuration information.
  • the terminal device can determine the DMRS configuration information used in the first time domain according to more information. In this way, based on the first parameter, it can be selected from a variety of DMRS configuration information with different distributions. The first DMRS configuration information to make the DMRS distribution more uniform.
  • the first parameter may be used to determine whether to use joint channel estimation in the first time domain, where joint channel estimation may also be referred to as cross-slot channel estimation, indicating that the channel estimation process is performed jointly with DMRSs of multiple time slots.
  • joint channel estimation and single-slot channel estimation correspond to different DMRS configuration information.
  • the joint channel estimation process has a corresponding relationship with the first DMRS configuration information.
  • the terminal device determines the first DMRS configuration information according to the first parameter, which may include:
  • the terminal device determines the first DMRS configuration information corresponding to the joint channel estimation under the condition that the joint channel estimation is used in the first time domain range according to the first parameter.
  • the terminal device determines whether to use joint channel estimation in the first time domain range according to the first parameter.
  • the DMRS configuration information used in the first time domain is determined according to whether the joint channel estimation is used in the first time domain.
  • the terminal device may The second DMRS configuration information corresponding to the single-slot channel estimation is determined, so as to use the second DMRS configuration information to determine the time domain position of the DMRS in the first time domain range.
  • both the first DMRS configuration information and the second DMRS configuration information include or correspond to one or more DMRS time domain locations.
  • the DMRS time domain location distribution included in or corresponding to the first DMRS configuration information is more uniform than the DMRS time domain location distribution included or corresponding to the second DMRS configuration information.
  • the second DMRS configuration information may include a DMRS pattern corresponding to PUSCH mapping type A as shown in FIG. 2A and a DMRS pattern corresponding to PUSCH mapping type B as shown in FIG. 2B .
  • the first DMRS configuration information may include a DMRS pattern corresponding to PUSCH mapping type A as shown in FIG. 5A and a DMRS pattern corresponding to PUSCH mapping type B as shown in FIG. 5B . It can be seen that, compared with FIG. 2A and FIG. 2B, in FIG. 5A and FIG.
  • the distance between the preamble DMRS and the additional DMRS is smaller, and in multiple consecutive time slots, such as retransmission time slot n or retransmission time slot (n+1) , the DMRS distribution is more uniform. Therefore, when joint channel estimation is used, that is, the channel estimation processing is performed jointly with DMRSs of multiple consecutive time slots, the accuracy of channel estimation and demodulation can be improved.
  • the first DMRS configuration information and/or the second DMRS configuration information may be pre-configured.
  • both the first DMRS configuration information and the second DMRS configuration information are pre-configured.
  • the terminal device selects the first DMRS configuration information from the first DMRS configuration information and the second DMRS configuration information when it is determined according to the first parameter that joint channel estimation is adopted in the first time domain range.
  • the second DMRS configuration information is pre-configured, and the first DMRS configuration information may be obtained according to the first parameter and the pre-configured second DMRS configuration information.
  • the terminal device obtains the first DMRS configuration information according to the first parameter and the predetermined rule when it is determined according to the first parameter that joint channel estimation is adopted in the first time domain range.
  • the first parameter can be used to determine whether to use joint channel estimation, and can also be used to obtain the first DMRS configuration information in combination with a predetermined rule.
  • the first parameter may include at least one of the following parameters:
  • the indication parameter of the channel estimation type is used to indicate that the channel estimation type is joint channel estimation or single-slot channel estimation. For example, when the parameter is 1, it indicates that joint channel estimation is adopted, and when the parameter is 0, it indicates that single-slot channel estimation is adopted.
  • the enable parameter of joint channel estimation is used to indicate whether to adopt joint channel estimation. For example, when the parameter is 1, it indicates that joint channel estimation is adopted, and when the parameter is 0, it indicates that joint channel estimation is not adopted.
  • the first parameter includes an indication parameter of a channel estimation type and/or an enabling parameter of joint channel estimation
  • the first DMRS configuration information is selected from the plurality of DMRS configuration information.
  • the signal configuration method may further include:
  • the terminal device determines to use joint channel estimation in the first time domain range; and/or,
  • the terminal device determines to use single-slot channel estimation in the first time domain range.
  • the first parameter is used to determine to use joint channel estimation in the first time domain range when the first parameter is not the first value, and/or, when the first parameter is the first value
  • a time domain range uses single-slot channel estimation.
  • the first parameter indicates a joint channel estimation with a value other than the first value
  • the first parameter indicates a single-slot channel estimation with a first value.
  • the first parameter may also be used to obtain the first DMRS configuration information in combination with a predetermined rule.
  • the first value may include null, 0, -1, or 1, or the like.
  • the first parameter when the first parameter includes both the channel estimation type indication parameter and/or the joint channel estimation enable parameter, and the DMRS time domain offset value and/or the configuration information identifier, the first parameter
  • the indication parameter of the channel estimation type and/or the enabling parameter of the joint channel estimation is used to determine whether to adopt the joint channel estimation process; the DMRS time domain offset value and/or the configuration information identifier in the first parameter are used to obtain the first parameter in combination with the predetermined rule.
  • a DMRS configuration information when the first parameter includes both the channel estimation type indication parameter and/or the joint channel estimation enable parameter, and the DMRS time domain offset value and/or the configuration information identifier.
  • the DMRS time-domain offset value in the first parameter is used to perform offset processing on the second DMRS configuration information.
  • the terminal device determines the first DMRS configuration information according to the first parameter, which may include:
  • the terminal device performs offset processing on the second DMRS configuration information according to the DMRS time-domain offset value in the first parameter to obtain the first DMRS configuration information.
  • the second DMRS configuration information may be pre-configured.
  • the terminal device may determine, according to the first parameter, to adopt joint channel estimation in the first time domain range, and, according to the DMRS time domain offset value in the first parameter, perform a Offset processing is performed on the second DMRS configuration information to obtain the first DMRS configuration information.
  • the terminal device configures the second DMRS The information is subjected to offset processing to obtain the first DMRS configuration information.
  • the terminal device may determine the corresponding DMRS configuration table from the pre-configured DMRS configuration table based on the resource allocation, for example, according to the mapping type of the first data, the duration 1 d of the first data, and the DMRS requirement information of the first data.
  • One or more DMRS time domain locations as the second DMRS configuration information. Then, according to the DMRS time-domain offset value in the first parameter, offset processing is performed on the second DMRS configuration information to obtain the first DMRS configuration information.
  • the DMRS time domain offset value is the number of offset symbols of the DMRS time domain position in the second DMRS configuration information.
  • the first data is PUSCH.
  • the parameter dmrs-AdditionalPosition pos1 of PUSCH
  • the terminal device obtains information from the pre-configured DMRS configuration table.
  • the second configuration information shown in FIG. 6 is determined.
  • the offset processing is performed on all or part of the DMRS time domain positions in the second DMRS configuration information, that is, offset by 3 symbols.
  • the additional DMRS time domain positions are shifted to the left. Taking a shift of 3 symbols as an example, the first DMRS configuration information is obtained.
  • the terminal device performs offset processing on the second DMRS configuration information according to the DMRS time domain offset value in the first parameter, which may include:
  • the terminal device performs offset processing on the preamble DMRS time domain position in the second DMRS configuration information according to the DMRS time domain offset value in the first parameter.
  • the terminal device performs offset processing on the second DMRS configuration information according to the DMRS time domain offset value in the first parameter, and may further include:
  • the terminal device When the second DMRS configuration information includes the additional DMRS time domain position, the terminal device performs offset processing on the additional DMRS time domain position in the second DMRS configuration information according to the DMRS time domain offset value in the first parameter.
  • the terminal device may only perform offset processing on the time domain position of the additional DMRS.
  • the processing amount can be reduced and the processing speed can be improved.
  • the terminal device may also perform offset processing on both the time domain position of the preamble DMRS and the time domain position of the additional DMRS.
  • the first parameter may include a DMRS time-domain offset value applicable to both the preamble DMRS time-domain position and the additional DMRS time-domain position.
  • the first parameter may include different DMRS time domain offset values for the preamble DMRS time domain position and for the additional DMRS time domain position.
  • the terminal device performs offset processing on the preamble DMRS time domain position in the second DMRS configuration information according to the DMRS time domain offset value for the preamble DMRS time domain position; according to the DMRS time domain offset for the additional DMRS time domain position The value performs offset processing on the time domain position of the additional DMRS in the second DMRS configuration information.
  • the offset direction used in the above offset processing is pre-configured or determined according to the second parameter sent by the network device.
  • the signal configuration method may further include: the network device sends a second parameter to the terminal device, where the second parameter is used to determine an offset direction used in the offset process.
  • the offset direction used for the offset processing of the preamble DMRS time domain position in the second DMRS configuration information and the offset used for the offset processing of the additional DMRS time domain position in the second DMRS configuration information same or different directions.
  • the offset direction used for the offset processing of the preamble DMRS time domain position is rightward, and the offset direction used for the offset processing of the additional DMRS time domain position is leftward.
  • the time domain position of the preamble DMRS can be made close to the time domain position of the additional DMRS, which is beneficial to realize the uniform distribution of the DMRS.
  • the DMRS time domain offset value is 3
  • the preamble DMRS time domain position in the second DMRS configuration information is shifted to the right by 3 symbols; if the second DMRS configuration information includes the additional DMRS time domain position, the additional DMRS time domain position in the second DMRS configuration information is shifted to the left by 3 symbols.
  • the offset direction used for the offset processing for the time domain position of the preamble DMRS and the offset direction used for the offset processing for the time domain position of the additional DMRS are both left or right.
  • the above offset processing includes a cyclic offset within a time slot.
  • using the cyclic offset is beneficial to make the DMRS distribution in the first DMRS configuration information more uniform.
  • the cyclic offset may refer to a cyclic offset of a certain DMRS time domain position in the time slot in which it is located, but not to other time slots.
  • the DMRS time domain position to be offset in the second DMRS configuration information is the additional DMRS time domain position shown in FIG. 7 , that is, the symbols in the retransmission time slot n and the retransmission time slot (n+1) #10 (symbol number starts from 0, symbol #10 is the 11th symbol).
  • the additional DMRS time domain positions are retransmission time slot n and retransmission time slot (n+1 ) in symbol #7 (ie, the 8th symbol). That is to say, according to the DMRS time domain offset value s 1 , perform a cyclic offset in the time domain position of the symbol sequence number s 0 in the time slot n, and obtain the symbol sequence number in the time slot n as mod (s 0 +s 1 ,14).
  • the network device can configure different DMRS time domain offset values according to actual application requirements, so as to flexibly configure the first DMRS used by the terminal device in the first time domain range
  • the configuration information is beneficial to improve the accuracy of channel estimation and demodulation in different application scenarios.
  • the configuration information identifier in the first parameter is used to select the first DMRS configuration information from the N pieces of DMRS configuration information.
  • the terminal device determines the first DMRS configuration information according to the first parameter, which may include:
  • the terminal device selects the first DMRS configuration information from the N pieces of DMRS configuration information according to the configuration information identifier in the first parameter.
  • the N pieces of DMRS configuration information are pre-configured.
  • three pieces of DMRS configuration information corresponding to joint channel estimation are pre-configured, including the first DMRS configuration information identified as 1.
  • the network device sends the configuration information identifier 1 to the terminal device, and the terminal device can select the first DMRS configuration information from the three DMRS configuration information.
  • the network device can indicate the configuration information identifier according to actual application requirements, so as to flexibly configure the first DMRS used by the terminal device in the first time domain.
  • the configuration information is beneficial to improve the accuracy of channel estimation and demodulation in different application scenarios.
  • a physical downlink control channel may include downlink grant (Downlink Grant, DL Grant) information for scheduling PDSCH transmission.
  • the terminal device determines the time domain position to start receiving the PDSCH based on the time domain position of the PDCCH and the preconfigured time interval K 0 .
  • the PDSCH is repeatedly transmitted multiple times.
  • the terminal device After completing the transmission of the PDSCH, the terminal device performs Acknowledge/Negative Acknowledge (ACK/NACK) feedback, wherein the time interval between the end position of the PDSCH transmission and the time domain position of the ACK/NACK feedback is K 1 slot.
  • ACK/NACK feedback is performed, the terminal device receives the next PDSCH, such as PDSCH (Re Tx) in FIG. 8 , wherein the time between the time domain position of receiving PDSCH (Re Tx) and the time domain position of ACK/NACK feedback The interval is K 3 time slots.
  • the PDCCH may also include uplink grant (Uplink Grant, UL Grant) information for scheduling PUSCH transmission.
  • the terminal device determines the time domain position for sending the PUSCH based on the preconfigured time interval K 2 .
  • the PUSCH is repeatedly transmitted multiple times. After completing the transmission of the PUSCH, the terminal device performs the next PUSCH transmission, such as the PUSCH (Re Tx) in FIG. 8 , according to the scheduling of the network device.
  • the next PUSCH transmission such as the PUSCH (Re Tx) in FIG. 8 , according to the scheduling of the network device.
  • the terminal device determines the number of times of repeated transmission of the first data such as PDSCH or PUSCH according to the aggregation factor pdsch-AggregationFactor or pusch-AggregationFactor configured by the high layer.
  • the starting position of the first time domain range is determined; according to the number of repeated transmissions, the time domain of the first time domain range is determined field length.
  • the terminal device further determines whether to use joint channel estimation according to the first parameter, and determines the first DMRS configuration information with uniform DMRS distribution in the case of determining to use joint channel estimation.
  • the first data is repeatedly transmitted in the first time domain range based on the first DMRS configuration information.
  • the terminal device can determine the first DMRS configuration information used in the first time domain range of repeated data transmission according to the first parameter sent by the network device, so the situation of uneven distribution of DMRS can be avoided , to improve the accuracy of channel estimation and demodulation.
  • an embodiment of the present application further provides a terminal device 100, referring to FIG. 9, which includes:
  • a first communication module 110 configured to receive the first parameter sent by the network device
  • the first processing module 120 is configured to determine the first demodulation reference signal DMRS configuration information according to the first parameter; wherein, the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range, and the first time The domain range is used to repeatedly transmit the first data.
  • the first processing module 120 is used for:
  • the first DMRS configuration information corresponding to the joint channel estimation is determined.
  • the first parameter includes an indication parameter of a channel estimation type and/or an enabling parameter of joint channel estimation.
  • the first parameter includes a DMRS time domain offset value and/or a configuration information identifier
  • the first processing module 120 is further configured to:
  • the first parameter is not the first value, it is determined to use joint channel estimation in the first time domain range; and/or,
  • the first parameter is the first value
  • the first processing module 120 is used for:
  • Offset processing is performed on the second DMRS configuration information according to the DMRS time-domain offset value in the first parameter to obtain the first DMRS configuration information.
  • the first processing module 120 is used for:
  • offset processing is performed on the preamble DMRS time domain position in the second DMRS configuration information.
  • the first processing module 120 is used for:
  • the terminal device When the second DMRS configuration information includes the additional DMRS time domain position, the terminal device performs offset processing on the additional DMRS time domain position in the second DMRS configuration information according to the DMRS time domain offset value in the first parameter.
  • the first parameter includes different DMRS time domain offset values for the preamble DMRS time domain position and for the additional DMRS time domain position.
  • the offset direction used in the offset processing is pre-configured or determined according to the second parameter sent by the network device.
  • the offset direction used for the offset processing of the preamble DMRS time domain position in the second DMRS configuration information and the offset used for the offset processing of the additional DMRS time domain position in the second DMRS configuration information same or different directions.
  • the offset processing includes a cyclic offset within a slot.
  • the second DMRS configuration information is pre-configured.
  • the first processing module 120 is used for:
  • the first DMRS configuration information is selected from the N pieces of DMRS configuration information.
  • the N pieces of DMRS configuration information are pre-configured.
  • the first processing module 120 is further configured to:
  • the time domain position of at least one DMRS is determined in the first time domain range according to the first DMRS configuration information, the mapping type of the first data, the transmission duration of the first data, and the DMRS requirement information of the first data.
  • the terminal device 100 in this embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiments, and the corresponding processes, functions, implementations, and benefits of each module (sub-module, unit, or component, etc.) in the terminal device 100
  • each module sub-module, unit, or component, etc.
  • each module (submodule, unit, or component, etc.) in the terminal device 100 in the embodiment of the present application may be implemented by different modules (submodule, unit, or component, etc.), or may be implemented by the same module.
  • a module (sub-module, unit or component, etc.) is implemented.
  • the first communication module and the first processing module may be different modules, or may be the same module, both of which can implement the terminal device in the embodiments of the present application. corresponding function.
  • an embodiment of the present application further provides a network device 200, referring to FIG. 10, which includes:
  • the second communication module 210 is configured to send the first parameter to the terminal device; wherein, the first parameter is used to determine the first DMRS configuration information, and the first DMRS configuration information is used to determine the time domain position of the DMRS in the first time domain range , and the first time domain range is used to repeatedly transmit the first data.
  • the first parameter is used to determine whether to use joint channel estimation in the first time domain, and the joint channel estimation has a corresponding relationship with the first DMRS configuration information.
  • the first parameter includes an indication parameter of a channel estimation type and/or an enabling parameter of joint channel estimation.
  • the first parameter includes a DMRS time domain offset value and/or a configuration information identifier; the first parameter is used to determine to use joint channel estimation in the first time domain range when the first parameter is not the first value, And/or, in the case that the first parameter is the first value, it is determined to use single-slot channel estimation in the first time domain range.
  • the DMRS time-domain offset value in the first parameter is used to perform offset processing on the second DMRS configuration information.
  • the first parameter includes different DMRS time domain offset values for the preamble DMRS time domain position and for the additional DMRS time domain position.
  • the second communication module 210 is also used for:
  • a second parameter is sent to the terminal device, wherein the second parameter is used to determine the offset direction used in the offset process.
  • the configuration information identifier in the first parameter is used to select the first DMRS configuration information from the N pieces of DMRS configuration information.
  • the network device 200 in this embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiments, and the corresponding processes, functions, implementations, and benefits of each module (sub-module, unit, or component, etc.) in the network device 200
  • each module sub-module, unit, or component, etc.
  • modules submodules, units, or components, etc.
  • the functions described by the respective modules (submodules, units, or components, etc.) in the network device 200 in the embodiments of the present application may be implemented by different modules (submodules, units, or components, etc.), or may be implemented by the same modules.
  • a module sub-module, unit, or component, etc. is implemented, and all can implement the corresponding functions of the network device in the embodiments of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application, wherein the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may also include a memory 620 .
  • the processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices .
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of the antennas may be one or more.
  • the communication device 600 may be the network device of this embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the communication device 600 may be a terminal device in this embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the terminal device in each method in the embodiment of the present application, which is not repeated here for brevity.
  • FIG. 12 is a schematic structural diagram of a chip 700 according to an embodiment of the present application, wherein the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720 .
  • the processor 710 may call and run a computer program from the memory 720 to implement the methods in the embodiments of the present application.
  • the memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may further include an input interface 730 .
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the chip can be applied to the terminal device in the embodiment of the present application as shown in FIG. 9 or FIG. 10 , and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • the general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.
  • the memory mentioned above may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM).
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • FIG. 13 is a schematic block diagram of a communication system 800 according to an embodiment of the present application, where the communication system 800 includes a terminal device 810 and a network device 820 .
  • the terminal device 810 may be used to implement the corresponding functions implemented by the terminal device in the methods of the various embodiments of the present application
  • the network device 820 may be used to implement the corresponding functions implemented by the network device in the methods of the various embodiments of the present application. function. For brevity, details are not repeated here.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated.
  • the available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente demande concerne un procédé de configuration de signaux, un dispositif de terminal, un dispositif de réseau, une puce, un support de stockage lisible par ordinateur, un produit-programme d'ordinateur et un programme d'ordinateur. Le procédé de configuration de signaux comprend : la réception, par un dispositif de terminal, d'un premier paramètre envoyé par un dispositif de réseau ; et la détermination, par le dispositif de terminal, de premières informations de configuration de signal DMRS selon le premier paramètre, les premières informations de configuration de signal DMRS étant utilisées pour déterminer une position de domaine temporel d'un signal DMRS à l'intérieur d'une première plage de domaine temporel, et la première plage de domaine temporel étant utilisée pour la transmission de manière répétée de premières données. À l'aide des modes de réalisation de la présente demande, la précision d'estimation et de démodulation d'un canal peut être améliorée.
PCT/CN2021/071619 2021-01-13 2021-01-13 Procédé de configuration de signaux, dispositif de terminal, dispositif de réseau, puce, et support de stockage Ceased WO2022151111A1 (fr)

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PCT/CN2021/071619 WO2022151111A1 (fr) 2021-01-13 2021-01-13 Procédé de configuration de signaux, dispositif de terminal, dispositif de réseau, puce, et support de stockage
CN202180075024.1A CN116438887A (zh) 2021-01-13 2021-01-13 信号配置方法、终端设备、网络设备、芯片和存储介质

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