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WO2020051774A1 - Procédé de communication, dispositif terminal et dispositif de réseau - Google Patents

Procédé de communication, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2020051774A1
WO2020051774A1 PCT/CN2018/105092 CN2018105092W WO2020051774A1 WO 2020051774 A1 WO2020051774 A1 WO 2020051774A1 CN 2018105092 W CN2018105092 W CN 2018105092W WO 2020051774 A1 WO2020051774 A1 WO 2020051774A1
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WO
WIPO (PCT)
Prior art keywords
dmrs
terminal device
uplink data
dci
network device
Prior art date
Application number
PCT/CN2018/105092
Other languages
English (en)
Chinese (zh)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880091383.4A priority Critical patent/CN111869140B/zh
Priority to PCT/CN2018/105092 priority patent/WO2020051774A1/fr
Priority to TW108132111A priority patent/TW202015450A/zh
Publication of WO2020051774A1 publication Critical patent/WO2020051774A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • 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 in particular, to a communication method, a terminal device, and a network device.
  • New wireless (New Radio, NR) system introduces Ultra Reliable and Low Latency Communications (URLLC).
  • URLLC Ultra Reliable and Low Latency Communications
  • the feature of this service is that it can achieve ultra high reliability within extreme delay (for example, 1ms). (E.g., 99.999%).
  • extreme delay for example, 1ms. (E.g., 99.999%).
  • Grant Free is proposed.
  • the scheduling-free method can adopt a pre-configured resource configuration method.
  • radio resource control Radio Resource Control, RRC
  • RRC Radio Resource Control
  • the terminal device can transmit on the configured resources according to the service requirements.
  • This technology avoids the process of resource request (SR, Schedule Request) and buffer status report (BSR, Buffer Status Report), thereby increasing the effective transmission time of the terminal device.
  • the demodulation reference signal (Demodulation Reference Signal, DMRS) resources in the scheduling-free resources configured by RRC signaling cannot always match the number of terminal devices.
  • DMRS has the role of user identification in addition to channel estimation. Therefore, it is very necessary to ensure the DMRS orthogonality.
  • the embodiments of the present application provide a communication method, a terminal device, and a network device, which can implement DMRS orthogonality while supporting more users while reducing DMRS resource overhead.
  • a communication method includes: a first terminal device receiving downlink control information DCI sent by a network device, the DCI used to indicate a configuration parameter of a demodulation reference signal DMRS, and the configuration of the DMRS
  • the parameters include at least one of a type of the DMRS, a pattern for transmitting the DMRS by at least one terminal device, and a resource overhead for transmitting the DMRS by the at least one terminal device.
  • the at least one terminal device includes the first Terminal Equipment;
  • the first terminal device Based on the DMRS configuration parameters, the first terminal device sends the DMRS to the network device.
  • a communication method includes: a network device sends downlink control information DCI to a first terminal device, the DCI is used to indicate a configuration parameter of a demodulation reference signal DMRS, and the configuration parameter of the DMRS Including at least one of a type of the DMRS, a pattern for transmitting the DMRS by at least one terminal device, and a resource overhead for transmitting the DMRS by the at least one terminal device, the at least one terminal device including the first terminal device;
  • the network device Based on the configuration parameters of the DMRS, the network device receives the DMRS sent by the first terminal device.
  • a terminal device is provided to execute the method in the first aspect or the implementations thereof.
  • the terminal device includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.
  • a network device for executing the method in the second aspect or the implementation manners thereof.
  • the network device includes a function module for executing the method in the second aspect or the implementations thereof.
  • 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, and execute the method in the above-mentioned first aspect or its implementations.
  • 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 to execute the method in the second aspect or the implementations thereof.
  • a chip is provided for implementing any one of the first to second aspects or a method in each implementation thereof.
  • the chip includes a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes any one of the first aspect to the second aspect described above or implementations thereof. method.
  • a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the first to second aspects described above or in its implementations.
  • a computer program product including computer program instructions that cause a computer to execute the method in any one of the first to second aspects described above or in various implementations thereof.
  • a computer program that, when run on a computer, causes the computer to execute the method in any one of the first to second aspects described above or in its implementations.
  • the configuration parameters of the DMRS can be adjusted in real time based on the number of terminal devices, so that the configuration parameters of the DMRS can be matched with the number of terminal devices in real time, which avoids the configuration of fewer terminal devices.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of dynamically adjusting the maximum number of ports supported by DMRS according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a chip according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System for Mobile
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or a communication terminal or a terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device may be a mobile switching center, relay station, access point, vehicle equipment, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in public land mobile networks (PLMN) that will evolve in the future.
  • PLMN public land mobile networks
  • the communication system 100 further includes at least one terminal device 120 located within a coverage area of the network device 110.
  • terminal equipment used herein includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection ; And / or another data connection / network; and / or via a wireless interface, such as for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) devices.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN Wireless Local Area Networks
  • DVB-H Digital Video Broadband
  • satellite networks satellite networks
  • AM- FM broadcast transmitter AM- FM broadcast transmitter
  • IoT Internet of Things
  • a terminal device configured to communicate through a wireless interface may be referred to as a “wireless communication terminal”, a “wireless terminal”, or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; personal communications systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communications capabilities; can include radiotelephones, pagers, Internet PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS personal communications systems
  • GPS Global Positioning System
  • a terminal device can refer to an access terminal, user equipment (User Equipment), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Processing (PDA), and wireless communication.
  • terminal devices 120 may perform terminal direct device (D2D) communication.
  • D2D terminal direct device
  • the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.
  • network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.
  • the device having a communication function in the network / system in the embodiments of the present application may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobile management entity, and the like, which is not limited in the embodiments of the present application.
  • Type 1 there are two types of scheduling-free resources: Type 1 and Type 2. It should be understood that the Type 1 configuration mode may also be referred to as a semi-static configuration mode.
  • Type 1 uses RRC signaling to configure scheduling-free resources.
  • the scheduling-free resources configured by RRC signaling may include at least time-frequency domain resources of uplink data, reference signal information (such as the port number and type of the reference signal), modulation and coding methods of uplink data, and power control parameters of uplink data.
  • the reference signal may be, but not limited to, a demodulation reference signal (Demodulation Reference Signal, DMRS).
  • DMRS Demodulation Reference Signal
  • Type 2 uses a combination of RRC signaling and physical layer signaling to configure scheduling-free resources.
  • the RRC signaling can configure at least the time domain resources of uplink data, the type of reference signals, and the power control parameters of uplink data
  • the physical layer signaling can configure at least the frequency domain resources of uplink data, the port number of the reference signals, and the uplink Data modulation and coding methods.
  • DMRS resources types of DMRS
  • the number of DMRS terminal devices transmitting at the same time is dynamically changed, so the DMRS resources cannot always match the number of DMRS terminal devices transmitting at the same time.
  • DMRS has the role of user identification in addition to channel estimation. Therefore, it is very necessary to ensure DMRS orthogonality.
  • the larger the number of orthogonal DMRSs the more time-frequency resources are required.
  • terminal device 1 For example, at the moment, there are 5 terminal devices sending DMRS to the network devices: terminal device 1, terminal device 2, terminal device 3, terminal device 4, and terminal device 5, respectively.
  • the resources configured by the network device for DMRS support three DMRS ports. cross.
  • terminal device 1 and terminal device 2 share DMRS port # 1
  • terminal device 3 and terminal device 4 share DMRS port # 2
  • terminal device 5 uses DMRS port # 3.
  • the network device cannot detect and recognize the terminal device 1, the terminal device 2, the terminal device 3, and the terminal device 4.
  • terminal device 1 and terminal device 2 send DMRS to the network device, and the resources configured by the network device for DMRS support four DMRS ports orthogonal.
  • terminal device 1 uses DMRS port # 1
  • terminal device 2 uses DMRS port # 2.
  • the resources corresponding to DMRS ports # 3 and # 4 will neither transmit DMRS nor uplink data, resulting in a waste of resources.
  • an embodiment of the present application proposes a communication method.
  • dynamically configuring the configuration parameters of the DMRS it is possible to adjust the DMRS configuration parameters in real time based on the number of terminal devices transmitting the DMRS at the same time, thereby reducing the DMRS resource overhead.
  • it can support DMRS port orthogonality for more users.
  • FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present application.
  • the method 200 may be executed by a terminal device, and may include at least part of the following content.
  • the first terminal device receives downlink control information (Downlink Control Information) (DCI) sent by the network device.
  • DCI Downlink Control Information
  • the DCI may be used to indicate configuration parameters of the DMRS.
  • the configuration parameters of the DMRS may include, but are not limited to, a type of the DMRS, a pattern for transmitting the DMRS by at least one terminal device, and a resource overhead for transmitting the DMRS by the at least one terminal device.
  • the at least one terminal device includes a first terminal device.
  • DCI may be used to indicate the configuration parameters of the DMRS
  • other dynamic signaling may also be used to indicate the configuration parameters of the DMRS, which is not limited in this embodiment of the present application.
  • the first terminal device may also be referred to as a terminal device or other names, which are not limited in the embodiments of the present application.
  • the first terminal device sends the DMRS to the network device.
  • FIG. 3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application.
  • the method 300 may be executed by a network device, and may include at least part of the following content.
  • the network device sends a DCI to the first terminal device, where the DCI may be used to indicate a configuration parameter of the DMRS, and the configuration parameter of the DMRS may include a type of the DMRS, a pattern for transmitting the DMRS by at least one terminal device, and a At least one terminal device transmits at least one of the resource overheads of the DMRS, and the at least one terminal device includes a first terminal device.
  • the network device receives the DMRS sent by the first terminal device.
  • the above DMRS pattern may be used to indicate the distribution of resources occupied by the DMRS across the entire system resources. For example, among the 144 Resource Elements (REs), where are the resources occupied by the DMRS.
  • REs Resource Elements
  • the pattern of the DMRS may be related to a channel state between the network device and a terminal device that sends the DMRS to the network device.
  • the channel state may include a path loss of a channel, a multipath delay, and the like. For example, if the channel state is poor, the DMRS pattern corresponds to more resources to improve the effect of channel estimation or channel measurement; if the channel state is good, the DMRS pattern corresponds to fewer resources to save resources.
  • the type of the DMRS may indicate a pattern of the DMRS. That is, the first terminal device and the network device can determine the DMRS pattern by the type of the DMRS.
  • the type of DMRS can also indicate the multiplexing mode of DMRS on the occupied resources.
  • the DMRS uses Frequency Division Multiplexing (FDM), Time Division Multiplexing (TDM), or Code Division Multiplexing (CDM). Way, etc.
  • the resource overhead of the DRMS may indicate the number of REs occupied by the DRMS. If DRMS occupies 8 REs, the resource overhead of DRMS is 8 REs.
  • the first terminal device may determine the resource overhead of the DMRS according to the type of the DRMS and / or the pattern of the DRMS.
  • the type of DMRS may correspond to the resource overhead of DMRS.
  • the resource overhead of the DMRS may be determined according to the correspondence between the type of the DMRS and the resource overhead of the DMRS and the type of the DMRS.
  • the correspondence between the type of DMRS and the resource overhead of the DMRS may be a one-to-one correspondence. That is, one type of DMRS can correspond to the resource overhead of one DMRS, and another type of DMRS can correspond to the resource overhead of another DMRS.
  • the correspondence between the type of DMRS and the resource overhead of DMRS may be pre-configured on the first terminal device, or may be sent by the network device to the first terminal device, which is not limited in this embodiment of the present application.
  • the network device may also determine the resource overhead of the DMRS according to the type of DRMS and / or the DRMS pattern.
  • the network device determines the implementation method of DMRS resource cost according to the type of DRMS and / or the DRMS pattern.
  • the terminal device determines the implementation method of DMRS resource cost according to the type of DRMS and / or the DRMS pattern. description.
  • the pattern of DMRS and the resource overhead of DMRS are the pattern and resource overhead of at least one terminal device that sends the DMRS to the network device.
  • the pattern of DMRS and the resource overhead of DMRS are the pattern and resource overhead of at least one terminal device that sends the DMRS to the network device.
  • the types of DRMS, DRMS patterns, and DRMS resource overhead mentioned above are related to the number of DRMS ports. It should be understood that the number of DMRS ports mentioned in the embodiments of the present application may be understood as the maximum number of ports supported by the DMRS.
  • the number of DMRS ports is different for different types of DMRS; the number of DMRS ports is different for different DRMS patterns; and the number of DMRS ports is different for different DRMS resource overheads.
  • the number of ports of the DMRS is 8. If the resource overhead of the DMRS is 2 REs, the number of DMRS ports is 2.
  • the number of ports of DMRS is 8; if the type of DMRS is Type 2, the number of ports of DMRS is 12.
  • the network device may determine the maximum number of terminal devices that use the DMRS resource to send DMRS at the same time according to the number of DMRS ports.
  • terminal devices that transmit DMRS at the same time are orthogonal.
  • the network device can determine that there can be a maximum of 4 orthogonal terminal devices transmitting DMRS at the same time.
  • the terminal device may use at least one DRMS port to send a DMRS.
  • the number of DRMS ports used by the terminal device may be related to the radio frequency antenna of the terminal device. For example, if the terminal device has 2 radio frequency antennas, the terminal device can use 2 DRMS ports; if the terminal device has 4 radio frequency antennas, the terminal device can use 4 DRMS ports.
  • each terminal device can use one DMRS port, but the embodiment of the application is not limited thereto.
  • the DCI sent by the network device to the first terminal device is used to indicate a configuration parameter of the DMRS.
  • the configuration parameter that the DCI indicates the DMRS can be understood as: the DCI indicates the configuration parameter that indicates the DMRS.
  • the DCI may include at least one of a type of the DMRS, a pattern of the DMRS, and a resource overhead of the DMRS.
  • the configuration parameter that the DCI indicates the DMRS can be understood as: the DCI indicates the configuration parameter of the DMRS implicitly.
  • the DCI may indicate a configuration parameter of the DMRS by indicating other parameters.
  • the first terminal device may determine the configuration parameters of the DMRS by using other parameters.
  • the other parameter indicated by the DCI may be a DMRS resource.
  • the first terminal device may determine the configuration parameters of the DMRS according to the resources of the DMRS.
  • the other parameter indicated by the DCI may be a port number of the DMRS.
  • the first terminal device may determine the configuration parameters of the DMRS according to the DMRS port number. For example, if DCI indicates DMRS port # 1, DMRS port # 2, DMRS port # 3, and DMRS port # 4, the first terminal device can determine that the maximum number of ports supported by DMRS is 4, so as to determine DMRS configuration parameters, such as The first terminal device may determine the resource overhead of the DMRS as 4 REs.
  • the DCI in addition to the configuration parameters of the DMRS, may also indicate the port number of the DMRS adopted by the first terminal device and / or the resource location of the DMRS sent by the first terminal device.
  • the DCI indicating the port number of the DMRS adopted by the first terminal device and / or the DCI of the resource location from which the first terminal device sends the DMRS and the DCI indicating the configuration parameter of the DMRS may be the same or different. Be specific.
  • the first terminal device sending the DMRS to the network device may include: a DMRS-based configuration parameter, and a DMRS-based port number and / or a resource location where the first terminal device sends the DMRS, the first terminal The device sends a DMRS to the network device.
  • the first terminal device may send a DMRS to a network device based on a configuration parameter of the DMRS and a port number of the DMRS.
  • the first terminal device may send the DMRS to the network device based on the resource overhead of the DMRS and the port number of the DMRS.
  • the first terminal device may send the DMRS to the network device based on the configuration parameters of the DMRS and the resource location where the first terminal device sends the DMRS.
  • the first terminal device may send the DMRS to the network device based on the configuration parameters of the DMRS, the port number of the DMRS, and the resource location where the first terminal device sends the DMRS.
  • the method in the embodiment of the present application may further include: the network device sends RRC signaling to the first terminal device. Accordingly, the first terminal device can receive the RRC signaling.
  • RRC signaling may be used to indicate time domain resources of uplink data and / or power control parameters of uplink data.
  • the first terminal device may send the uplink data to the network device based on the time domain resources of the uplink data and / or the power control parameters of the uplink data indicated by the RRC signaling.
  • the network device may send a first DCI to the first terminal device, and the first DCI may be used to indicate all configuration parameters of the DMRS.
  • the network device can send a second DCI to the first terminal device, and the second DCI can be used to indicate the number of DMRS after the number of terminal devices that send DMRS changes at the same time. All configuration parameters.
  • the first DCI may be used to activate time domain resources of uplink data and / or power control parameters of uplink data that are configured semi-statically through RRC signaling. That is, after the first terminal device receives the first DCI, the time domain resources of the uplink data and / or the power control parameters of the uplink data become effective.
  • the network device can dynamically adjust the number of DMRS ports.
  • the first DCI sent by the network device to the first terminal device may indicate that the number of DMRS ports is 2 and the configuration parameter of the DMRS.
  • the network device can be configured with 8 DMRS ports. Then, the network device sends a second DCI to the first terminal device, where the second DCI can be used to indicate a configuration parameter of the DMRS corresponding to the port number of the DMRS of 8.
  • the network device may configure the number of DMRS ports corresponding to the configuration parameters of the DMRS indicated by the first DCI, which is not limited in this embodiment of the present application. For example, the network device may count the number of terminal devices that simultaneously send DMRS at each time in the multiple previous times of the multiple terminal devices, and then calculate the average number of the number of terminal devices that simultaneously send DMRS at different times, so that The average number is determined as the number of DMRS ports corresponding to the configuration parameters of the DMRS indicated by the first DCI.
  • the network device may determine the number of DMRS ports corresponding to the configuration parameters of the DMRS indicated by the first DCI according to the channel status between the network device and the terminal device at the current moment. If the channel status between the network device and the terminal device is good at the current moment, the network device can configure fewer DMRS ports, such as 2 DMRS ports; if the channel status between the network device and the terminal device is poor at the current moment, Then the network device can configure more DMRS port numbers, such as 4 DMRS ports.
  • RRC signaling may also indicate some configuration parameters of DMRS, and DCI indicates another part of DMRS. Configuration parameters.
  • the RRC signaling specifically indicates which configuration parameters of the DMRS, which are not limited in the embodiment of the present application.
  • RRC signaling may indicate the resource overhead of the DMRS.
  • the network device may only send DCI to terminal devices using the same DMRS port to instruct terminal devices using the same DMRS port to send DMRS using other DMRS ports.
  • terminal device 1 uses DMRS port # 1
  • terminal device 2 uses DMRS port # 2.
  • the network device can change the DMRS configuration parameters, expand the number of DMRS ports to three, and then send DCI to the terminal device 3 to instruct the terminal device 3 to use the DMRS port # 3 to send the DMRS.
  • the network device may send DCI to all terminal devices that send DMRS at the current time, to instruct all terminal devices that send DMRS at the current time to send DMRS on other resources.
  • the eight terminal devices sent DMRS to a network device, and the eight terminal devices used a DMRS resource of type Type 1 to send DMRS.
  • the number of terminal devices that send DMRS to the network device increases to 12, and the network device can send DCI to 12 terminal devices to instruct the 12 terminal devices to send DMRS to the network device using the DMRS resource of Type 2.
  • the DCI may be dedicated to the first terminal device.
  • the DCI can also be used to indicate but is not limited to at least one of code domain resources of uplink data, modulation and coding scheme (MCS) of uplink data, and multiple access parameters of uplink data.
  • MCS modulation and coding scheme
  • the multiple access parameters of the uplink data may at least include data multiple access coding parameters.
  • the method in the embodiment of the present application may further include: the first terminal device may send to the network device based on at least one of a code domain resource of the uplink data, a modulation coding method of the uplink data, and a multiple access parameter of the uplink data.
  • Upstream data may be further included in the first terminal device.
  • the configuration parameters of the DMRS can be carried in any domain in the DCI. That is, the configuration parameters of the DMRS can reuse any one domain in the DCI.
  • the configuration parameters of the DMRS may be carried in a Hybrid Automatic Repeat Request (HARQ) process number field in the DCI.
  • HARQ Hybrid Automatic Repeat Request
  • the domain will no longer indicate the HARQ process number.
  • the network device and the first terminal device can obtain the HARQ process number through calculation.
  • DCI can be applied to multiple terminal devices.
  • the multiple terminal devices may include a first terminal device.
  • the DCI indicating the port number of the DMRS and / or the resource location where the first terminal device sends the DMRS is different from the DCI indicating the configuration parameter of the DMRS, and one DCI has indicated the port number of the DMRS and / or the first terminal Where a device sends a DMRS resource location, another DCI can use only one domain to indicate the configuration parameters of the DRMS of multiple terminal devices.
  • the DCI may use multiple domains to indicate the configuration parameters of multiple terminal devices, and multiple The DMRS port number of each terminal device in the terminal device and / or the resource location where the first terminal device sends the DMRS.
  • the DCI indicating the configuration parameters of the DMRS may not include at least one of a code domain resource of uplink data, a modulation coding method of the uplink data, and a multiple access parameter of the uplink data.
  • the code domain of the uplink data At least one of the resource, the modulation and coding mode of the uplink data, and the multiple access parameters of the uplink data may be semi-statically configured. That is, the network device may send RRC signaling to the first terminal device, where the RRC signaling is used to indicate at least one of a code domain resource of uplink data, a modulation coding method of the uplink data, and a multiple access parameter of the uplink data.
  • the first terminal device may send the uplink data to the network device based on at least one of a code domain resource of the uplink data, a modulation coding method of the uplink data, and a multiple access parameter of the uplink data.
  • At least one of a code domain resource of the uplink data, a modulation and coding mode of the uplink data, and a multiple access parameter of the uplink data may be dynamically configured.
  • At least one of the code domain resources of the uplink data, the modulation and coding method of the uplink data, and the multiple access parameters of the uplink data may be other than the DCI indicating the configuration parameter of the DMRS DCI indicates.
  • the DCI indicating the configuration parameters of the DMRS is referred to as DCI1
  • the DCI indicating at least one of the code domain resources of the uplink data, the modulation and coding method of the uplink data, and the multiple access parameters of the uplink data is referred to as DCI 2.
  • the first terminal device receives RRC signaling sent by a network device, and the RRC signaling may be used to indicate parameters such as time domain resources of uplink data and / or power control parameters of uplink data.
  • the first terminal device receives DCI 2 sent by the network device, and DCI 2 indicates at least one of code domain resources of uplink data, modulation coding method of uplink data, and multiple access parameters of uplink data, and DCI 2 can be activated Time domain resources of uplink data and / or power control parameters of uplink data. Then, the first terminal device may further receive DCI 1 sent by the network device, and the DCI 1 may be used to indicate a configuration parameter of the DMRS.
  • DCI when DCI is applicable to multiple terminal devices, if the number of bits of DCI is sufficient, DCI may also be used to indicate other parameters. For example, the identity of each terminal device in multiple terminal devices, and at least one of the time domain resources of the uplink data, the code domain resources of the uplink data, the modulation and coding method of the uplink data, and the multiple access parameters of the uplink data, etc. The application example does not specifically limit this.
  • the uplink data sent by the multiple terminal devices may be orthogonal.
  • the uplink data sent by multiple terminal devices may be orthogonal coded (Orthogonal Cover Code, OCC) code division multiplexing, so that the multiple uplink data are orthogonal.
  • OCC Orthogonal Cover Code
  • the DMRS resources allocated by the network device to the terminal device may support that the terminal devices supported by the OCC used by the uplink data send Upstream data.
  • the DMRS resources allocated by the network device to the terminal device can support the four terminal devices to send DMRS and uplink data simultaneously.
  • uplink data sent by multiple terminal devices is orthogonal.
  • the network device after receiving the uplink data, the network device can correctly demodulate the uplink data.
  • the first terminal device sending the DMRS to the network device may include: within a period from the time when the DCI is currently received to the time when the DCI is received next, the first terminal device may be based on the current time
  • the DMRS configuration parameter indicated by the DCI sends the DMRS to the network device.
  • the DCI indicating that the configuration parameter of the DMRS sent by the network device to the first terminal device is one of multiple implementations. In another implementation, the DCI may indicate the number of DMRS ports.
  • the first terminal device may determine at least one of a type of the DMRS, a pattern of the DMRS, and a resource cost of the DMRS according to the number of DMRS ports. Based on at least one of the determined type of the DMRS, the pattern of the DMRS, and the resource overhead of the DMRS, the DMRS may be sent to the network device.
  • FIG. 4 different patterns represent different DMRS ports.
  • the type of DMRS is type A, as shown in FIG. 4, type A indicates that DMRS occupies a list of symbols, and can support four DMRS ports orthogonal.
  • the type of DMRS is type B, as shown in FIG. 4, type B indicates that DMRS occupies two columns of symbols, and can support 8 DMRS ports orthogonal.
  • terminal device 1 uses DMRS port # 1 to send DMRS
  • terminal device 2 uses DMRS port # 2 to send DMRS
  • terminal device 3 uses DMRS port # 3 to send DMRS
  • terminal device 4 uses DMRS port # 4 to send DMRS. Therefore, the network device The four terminal devices can be detected.
  • terminal device 1 and terminal device 5 use DMRS port # 1 to send DMRS
  • terminal device 2 and terminal device 6 use DMRS port # 2 to send DMRS
  • terminal device 3 and Terminal device 7 uses DMRS port # 3 to send DMRS
  • terminal device 4 and terminal device 8 use DMRS port # 4 to send DMRS. Since every two terminal devices use the same DMRS port, the network device cannot detect the eight terminal devices.
  • the network device may send DCI to the eight terminal devices, instructing the eight terminal devices to use the scheduling-free resource 2 to send DMRS.
  • Terminal device 1 uses DMRS port # 1 to send DMRS
  • terminal device 2 uses DMRS port # 2 to send DMRS
  • ... terminal device 7 uses DMRS port # 7 to send DMRS
  • terminal device 8 uses DMRS port # 8 to send DMRS.
  • the DMRS port used by the terminal device to send DMRS is different, so the network device can detect the eight terminal devices.
  • the network device can adjust the DMRS configuration parameters in real time based on the number of terminal devices, so that the DMRS configuration parameters can be matched with the number of terminal devices in real time, which avoids fewer terminal devices.
  • the problem is that more DMRS resources are configured when there are more or fewer DMRS resources are configured when there are more terminal devices, which can reduce the DMRS resource overhead and support more users' DMRS port orthogonality.
  • the communication method according to the embodiment of the present application has been described in detail above.
  • the communication device according to the embodiment of the present application will be described below with reference to FIGS. 5 to 7.
  • the technical features described in the method embodiment are applicable to the following device embodiments.
  • FIG. 5 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application.
  • the terminal device 500 includes:
  • the communication unit 510 is configured to receive a DCI sent by a network device, where the DCI is used to indicate a configuration parameter of the DMRS, and the configuration parameter of the DMRS includes a type of the DMRS, a pattern for transmitting the DMRS by at least one terminal device, and a transmission of the DMRS At least one of the resource overheads of the DMRS, wherein the at least one terminal device includes the terminal device 500;
  • the communication unit 510 is further configured to send a DMRS to a network device based on a configuration parameter of the DMRS.
  • the DCI is exclusive to the terminal device 500.
  • the DCI is further used to indicate at least one of a code domain resource of uplink data, a modulation and coding mode of uplink data, and a multiple access parameter of uplink data.
  • the DCI is applicable to multiple terminal devices, and the multiple terminal devices include the terminal device 500.
  • the communication unit 510 is further configured to receive RRC signaling sent by a network device, where the RRC signaling is used to indicate time domain resources of uplink data and / or power control parameters of the uplink data;
  • the configuration parameters of the DMRS are carried in a domain of a hybrid automatic repeat request HARQ process number in the DCI.
  • the DCI is further used to indicate a port number of a DMRS adopted by the terminal device 500 and / or a resource location where the terminal device 500 sends a DMRS;
  • the communication unit 510 is specifically configured to: based on the DMRS-based configuration parameters and the DMRS-based port number and / or the resource location where the terminal device 500 sends the DMRS, and send the DMRS to the network device.
  • terminal device 500 may correspond to the first terminal device in the method 200, and corresponding operations of the first terminal device in the method 200 may be implemented. For brevity, details are not described herein again.
  • FIG. 6 shows a schematic block diagram of a network device 600 according to an embodiment of the present application.
  • the network device 600 includes:
  • the communication unit 610 sends a DCI to the first terminal device, where the DCI is used to indicate a configuration parameter of the DMRS.
  • the configuration parameter of the DMRS includes a type of the DMRS, a pattern for transmitting the DMRS by at least one terminal device, and a transmission of the DMRS by the at least one terminal device At least one of the resource overheads, the at least one terminal device includes a first terminal device;
  • the communication unit 610 is further configured to receive the DMRS sent by the first terminal device based on the DMRS configuration parameters.
  • the DCI is dedicated to the first terminal device.
  • the DCI is further used to indicate at least one of a code domain resource of uplink data, a modulation and coding mode of uplink data, and a multiple access parameter of uplink data.
  • the DCI is applicable to multiple terminal devices, where the multiple terminal devices include a first terminal device.
  • the communication unit 610 is further configured to send RRC signaling to the first terminal device, where the RRC signaling is used to indicate time domain resources of uplink data and / or power control of uplink data. parameter;
  • the configuration parameter of the DMRS is carried in a domain of a HARQ process number in the DCI.
  • the DCI is further used to indicate a port number of the DMRS adopted by the first terminal device and / or a resource location where the first terminal device sends the DMRS;
  • the communication unit 610 is specifically configured to receive the DMRS sent by the first terminal device based on the DMRS-based configuration parameters and the DMRS-based port number and / or the resource location where the first terminal device sends the DMRS.
  • the network device 600 may correspond to the network device in the method 300, and corresponding operations of the network device in the method 300 may be implemented. For brevity, details are not described herein again.
  • FIG. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application.
  • the communication device 700 shown in FIG. 7 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment 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 communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other information. Information or data sent by the device.
  • the transceiver 730 may include a transmitter and a receiver.
  • the transceiver 730 may further include antennas, and the number of antennas may be one or more.
  • the communication device 700 may specifically be a network device according to an embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by a network device in each method of the embodiments of the present application. For brevity, details are not described herein again. .
  • the communication device 700 may specifically be a terminal device in the embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by the terminal device in each method in the embodiments of the present application. For brevity, details are not described herein again. .
  • FIG. 8 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 800 shown in FIG. 8 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 800 may further include a memory 820.
  • the processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.
  • the memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.
  • the chip 800 may further include an input interface 830.
  • the processor 810 may control the input interface 830 to communicate with other devices or chips. Specifically, the processor 810 may obtain information or data sent by other devices or chips.
  • the chip 800 may further include an output interface 840.
  • the processor 810 may control the output interface 840 to communicate with other devices or chips. Specifically, the processor 810 may output information or data to the other devices or chips.
  • the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability.
  • each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field, Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchronous DRAM Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Synchrobus RAM, SLDRAM
  • Direct Rambus RAM Direct Rambus 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 (SDRAM), double data rate synchronous dynamic random access memory (Double 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 memories in the embodiments of the present application are intended to include, but not limited to, these and any other suitable types of memories.
  • FIG. 9 is a schematic block diagram of a communication system 900 according to an embodiment of the present application.
  • the communication system 900 includes a terminal device 910 and a network device 920.
  • the terminal device 910 may be used to implement the corresponding functions implemented by the terminal device in the foregoing method
  • the network device 920 may be used to implement the corresponding functions implemented by the network device in the foregoing method.
  • details are not described herein again. .
  • An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For simplicity, here No longer.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. No longer.
  • An embodiment of the present application further provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. More details.
  • the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instruction causes a computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. More details.
  • the embodiment of the present application also provides a computer program.
  • the computer program may be applied to the terminal device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. , Will not repeat them here.
  • the computer program may be applied to a network device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. , Will not repeat them here.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored 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, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments 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 disks or optical disks and other media that can store program codes .

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

Selon des modes de réalisation, la présente invention concerne un procédé de communication, un dispositif terminal et un dispositif de réseau. Le procédé comprend les étapes suivantes : un premier dispositif terminal reçoit des informations de commande de liaison descendante (DCI) transmises par un dispositif de réseau, les DCI indiquant des paramètres de configuration de signal de référence de démodulation (DMRS) comprenant au moins un élément parmi un type de DMRS, un motif utilisé pour transmettre des DMRS par un ou plusieurs dispositifs terminaux, ou des temps système de ressource résultant de la transmission des DMRS par le ou les dispositifs terminaux, le ou les dispositifs terminaux comprenant le premier dispositif terminal ; et le premier dispositif terminal transmet le DMRS au dispositif de réseau en fonction des paramètres de configuration de DMRS. Le procédé de communication, le dispositif terminal et le dispositif de réseau décrits dans les modes de réalisation de la présente invention peuvent réaliser une réduction de temps système de ressource encourus lors de la transmission de DMRS tout en prenant en charge l'orthogonalité de DMRS pour davantage d'utilisateurs.
PCT/CN2018/105092 2018-09-11 2018-09-11 Procédé de communication, dispositif terminal et dispositif de réseau WO2020051774A1 (fr)

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CN201880091383.4A CN111869140B (zh) 2018-09-11 2018-09-11 通信方法、终端设备和网络设备
PCT/CN2018/105092 WO2020051774A1 (fr) 2018-09-11 2018-09-11 Procédé de communication, dispositif terminal et dispositif de réseau
TW108132111A TW202015450A (zh) 2018-09-11 2019-09-05 通訊方法、終端設備和網路設備

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