WO2021159261A1 - 下行相位跟踪参考信号ptrs传输方法及相关装置 - Google Patents

下行相位跟踪参考信号ptrs传输方法及相关装置 Download PDF

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Publication number
WO2021159261A1
WO2021159261A1 PCT/CN2020/074675 CN2020074675W WO2021159261A1 WO 2021159261 A1 WO2021159261 A1 WO 2021159261A1 CN 2020074675 W CN2020074675 W CN 2020074675W WO 2021159261 A1 WO2021159261 A1 WO 2021159261A1
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Prior art keywords
ptrs
port
offset
ports
dmrs
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PCT/CN2020/074675
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English (en)
French (fr)
Inventor
陈文洪
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Oppo广东移动通信有限公司
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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 PCT/CN2020/074675 priority Critical patent/WO2021159261A1/zh
Priority to CN202080079579.9A priority patent/CN114731256B/zh
Publication of WO2021159261A1 publication Critical patent/WO2021159261A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation

Definitions

  • This application relates to the field of communication technology, and in particular to a downlink PTRS transmission method and related devices.
  • phase tracking reference signal Phase Tracking Reference Signal
  • network equipment in the downlink phase tracking reference signal (Phase Tracking Reference Signal, PTRS) transmission, can be configured with up to 2 PTRS ports, and each PTRS port corresponds to a transmission configuration indicator (Transmission Configuration Indicator). , TCI) status and a Demodulation Reference Signal (DMRS) port of a Code Division Multiplexing (CDM) group, that is, the DMRS port of the same CDM group can only be associated with one PTRS port.
  • TCI Transmission Configuration Indicator
  • DMRS Demodulation Reference Signal
  • CDM Code Division Multiplexing
  • the embodiments of the present application provide a downlink PTRS transmission method and related devices, in order to achieve the same DMRS port associating multiple PTRS ports, so as to obtain a more accurate phase estimation.
  • an embodiment of the present application provides a downlink PTRS transmission method, including:
  • the terminal determines the physical resources occupied by each of the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port;
  • the terminal receives the PTRS on each PTRS port on the physical resource occupied by each PTRS port.
  • an embodiment of the present application provides a downlink PTRS transmission method, including:
  • the network device determines the physical resource occupied by each of the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port of the terminal;
  • the network device sends the PTRS on each PTRS port to the terminal on the physical resource occupied by each PTRS port.
  • an embodiment of the present application provides a downlink PTRS transmission device, which is applied to a terminal, and the device includes a processing unit and a communication unit, where:
  • the processing unit is configured to determine the physical resource occupied by each PTRS port among multiple PTRS ports, wherein the multiple PTRS ports correspond to the same demodulation reference signal DMRS port; The PTRS on each PTRS port is received on the physical resources occupied by the PTRS port.
  • an embodiment of the present application provides a downlink PTRS transmission device, which is applied to network equipment, and the device includes a processing unit and a communication unit, where:
  • the processing unit is configured to determine the physical resource occupied by each PTRS port among multiple PTRS ports, wherein the multiple PTRS ports correspond to the same demodulation reference signal DMRS port of the terminal; The PTRS on each PTRS port is sent to the terminal on the physical resource occupied by each PTRS port.
  • an embodiment of the present application provides a terminal, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are configured by The processor executes, and the program includes instructions for executing the steps in any method of the first aspect of the embodiments of the present application.
  • an embodiment of the present application provides a network device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are configured by The processor executes, and the program includes instructions for executing the steps in any method in the second aspect of the embodiments of the present application.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the first aspect or the second aspect of the embodiment of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the For example, part or all of the steps described in any method of the first aspect or the second aspect.
  • an embodiment of the present application provides a computer program, wherein the computer program is operable to cause a computer to execute some or all of the steps described in any method of the first aspect or the second aspect of the embodiment of the present application .
  • the computer program may be a software installation package.
  • the terminal determines the physical resources occupied by each PTRS port among the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port, and secondly, the terminal is at each PTRS port Receive PTRS on each PTRS port on the occupied physical resources. In this way, the same DMRS port can be associated with multiple PTRS ports, thereby obtaining a more accurate phase estimation.
  • FIG. 1A is a system architecture diagram of an exemplary communication system provided by an embodiment of the present application.
  • FIG. 1B is a schematic diagram of a cooperative diversity transmission of TRP1 and TRP2 according to an embodiment of the present application
  • FIG. 1C is a schematic diagram of an SDM diversity transmission 1 provided by an embodiment of the present application.
  • FIG. 1D is a schematic diagram of an SDM diversity transmission 2 provided by an embodiment of the present application.
  • FIG. 1E is a schematic diagram of an FDM diversity transmission 1 provided by an embodiment of the present application.
  • FIG. 1F is a schematic diagram of an FDM diversity transmission 2 provided by an embodiment of the present application.
  • FIG. 1G is a schematic diagram of a TDM diversity transmission 1 provided by an embodiment of the present application.
  • FIG. 1H is a schematic diagram of a TDM diversity transmission 2 provided by an embodiment of the present application.
  • 2A is a schematic flowchart of a downlink PTRS transmission method provided by an embodiment of the present application
  • 2B is a schematic diagram of RE resource configuration of two DMRS ports provided by an embodiment of the present application.
  • 2C is a schematic diagram of PRB resource configuration of two DMRS ports provided by an embodiment of the present application.
  • 2D is a schematic diagram of OFDM symbol resource configuration of two DMRS ports provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Fig. 5 is a block diagram of functional units of a downlink PTRS transmission device provided by an embodiment of the present application.
  • FIG. 6 is a block diagram of the functional unit composition of a downlink PTRS transmission device provided by an embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to an exemplary communication system 100 as shown in FIG. 1A.
  • the exemplary communication system 100 includes a terminal 110 and a network device 120, and the terminal 110 is in communication connection with the network device 120.
  • the example communication system 100 may be, for example, a Non-Terrestrial Network (NTN) system, a global system for mobile communications (GSM) system, and a code division multiple access (CDMA) system.
  • NTN Non-Terrestrial Network
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA Wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD LTE time division duplex
  • UMTS universal mobil et communication system
  • WiMAX worldwide interoperability for microwave access
  • WiMAX worldwide interoperability for microwave access
  • 5G Fifth Generation
  • NR new radio
  • the terminal 110 in the embodiment of the present application may refer to user equipment, access terminal, 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 terminal can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, relay devices, in-vehicle devices, wearable devices, terminals in the future 5G network, or public land mobile network (PLMN) that will evolve in the future This is not limited in this embodiment of the application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PLMN public land mobile network
  • the network device 120 in the embodiment of the present application may be a device for communicating with a terminal, and the network device may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • the base transceiver station (BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evoled) in the LTE system.
  • NodeB, NB base station
  • WCDMA wideband code division multiple access
  • evoled evolved base station
  • NodeB eNB or eNodeB
  • the network device can also be a wireless controller in the cloud radio access network (CRAN) scenario
  • the network device can be a relay device, an access point, a vehicle-mounted device, or a wearable device
  • the network equipment in the future 5G network or the network equipment in the future evolved PLMN network one or a group of (including multiple antenna panels) antenna panels of the base station in the 5G system, or it can also be a gNB or transmission point.
  • a network node such as a baseband unit (BBU), or a distributed unit (DU), etc., is not limited in the embodiment of the present application.
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some of the functions of the gNB, and the DU implements some of the functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU+AAU.
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the terminal 110 or the network device 120 includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal, or a functional module in the terminal that can call and execute the program.
  • PDSCH diversity transmission In order to improve the transmission reliability of PDSCH and meet the requirements of Ultra-reliable Low-latency Communication (URLLC), NR introduces the diversity transmission of PDSCH, which means carrying The PDSCH of the same data is transmitted multiple times through different time slots/TRP/redundancy versions, etc., so as to obtain diversity gain and reduce the probability of false detection (BLER).
  • the diversity transmission may be performed in multiple time slots, or may be performed on multiple transmission points (Transmission/Reception Point, TRP).
  • TRP1 and TRP2 cooperate with the terminal for PDSCH diversity transmission.
  • ACK/NACK is a positive answer/negative answer.
  • a downlink control information can schedule multiple PDSCHs carrying the same data to be transmitted on multiple consecutive time slots, using the same frequency domain resources, and the number of time slots is determined by High-level signaling configuration.
  • DCI Downlink Control Information
  • the PDSCH carrying the same data is transmitted on different TRPs at the same time, and different beams can be used (in this case, multiple TCI states need to be indicated in one DCI, and each TCI state is used for one repeated transmission).
  • the repeatedly transmitted data can use different DMRS ports or the same DMRS port.
  • Diversity transmission based on multiple TRPs In order to meet different transmission delay and reliability requirements, six different diversity transmission schemes based on multiple TRPs are introduced in NR. Different transmission schemes use different diversity methods to obtain diversity gain. These solutions all need to indicate multiple TCI states in the DCI scheduling PDSCH, and each TCI state is used for data transmission of one TRP, so as to support multi-TRP diversity transmission.
  • network equipment can schedule data transmission of up to 4 transmission layers (layers). These data are transmitted separately from two TRPs using independent beams (corresponding to different TCI states), that is, multiple TRPs are in the same physical resource
  • Different DMRS ports and beams (corresponding to different TCI states) are used to transmit data in the same transmission block.
  • the DMRS ports used for data transmission come from different CDM groups, and the DMRS ports of different CDM groups adopt different TCI states, that is, one TRP corresponds to one CDM group and one TCI state, as shown in Figure 1C.
  • SDM scheme 2 In SDM scheme 2, the network equipment can schedule data transmission of up to 2 transmission layers (layers), and the two TRPs use the same time-frequency resources and the same DMRS port (can be 1 or 2) DMRS port, from the same CDM group) to transmit the same data. Different TRPs use different beams (corresponding to different TCI states) for data transmission, as shown in Figure 1D.
  • Frequency division multiplexing FDM scheme 1 In this FDM scheme, network equipment can schedule up to 2 transmission layers (layer) data transmission, these data use independent beams (corresponding to different TCI states) from two TRP Separate transmission on different frequency domain resources, that is, multiple TRPs use the same DMRS port and different beams (corresponding to different TCI states) to transmit data in the same transmission block on the same time domain resource and different frequency domain resources.
  • the DMRS ports used by different TRPs in the FDM scheme are the same, but the frequency domain resources are different.
  • the DMRS ports used for data transmission come from the same CDM group, that is, the same DMRS ports correspond to different TCI states on different frequency domain resources, as shown in FIG. 1E.
  • Frequency Division Multiplexing (FDM) scheme 2 The main difference between FDM scheme 2 and FDM scheme 1 is that different TRPs transmit independently encoded codewords on different frequency domain resources, rather than the same codeword Different data. Among them, the two codewords come from the same data transmission block, but use independent redundancy versions (RV) to form different codewords, which are transmitted on different frequency domain resources.
  • RV redundancy versions
  • the codewords transmitted by the two TRPs can be decoded independently, and the combined gain can also be obtained through soft bit combination, which is similar to two (Hybrid Automatic Repeat Request, HARQ) retransmissions of one transmission block, as shown in FIG. 1F.
  • Time Division Multiplexing (TDM) scheme 1 In this TDM scheme, in multiple mini-slots (mini-slots, also called sub-slots) in a time slot, the terminal Use different TCI states to receive the same data from different TRPs. Among them, one mini-slot may include several orthogonal frequency division multiplexing OFDM symbols, and the frequency domain resources occupied by the terminal in different mini-slots are the same. That is, multiple TRPs use the same DMRS port and different beams (corresponding to different TCI states) to transmit the same data on the same frequency domain resources in different mini-slots.
  • MCS Modulation and Coding Scheme
  • the terminal can also perform soft bit combination on the data in different mini-slots, as shown in the figure Shown in 1G.
  • Time division multiplexing TDM scheme 2 The difference between TDM scheme 2 and TDM scheme 1 is that the same data is transmitted in different time slots, that is, multiple TRPs use the same DMRS on the same frequency domain resources in different time slots Ports and different beams (corresponding to different TCI states) transmit the same data, as shown in Figure 1H.
  • PTRS transmission In downlink PTRS transmission, network equipment can be configured with up to 2 PTRS ports, each PTRS port corresponds to a TCI state and a DMRS port of a CDM group, that is, the DMRS port of the same CDM group can only be associated with at most one PTRS port .
  • the PTRS signal on a port sends the same signal to the DMRS port with the lowest port index in the associated CDM group (called the DMRS port associated with the PTRS port), and the RE offset used is determined according to the DMRS port with the lowest index (such as Shown in Table 1).
  • the terminal determines the RE offset, it can determine the physical resources used to transmit PTRS according to the following formula:
  • Radio Network Temporary Identity used for Cyclic Redundancy Check (CRC) scrambling, which can be cell RNTI C-RNTI, configured scheduling RNTI (Configured Scheduling-RNTI, CS-RNTI), modulation Coding method-cell RNTI MCS-C-RNTI, semi-persistent channel state information RNTI (Semi-Persistent Channel State Information-RNTI, SP-CSI-RNTI), N RB is the bandwidth (PRB number) occupied by the DMRS port associated with the PTRS , K PT-RS ⁇ 2,4 ⁇ is the frequency domain density of PTRS, which is determined according to the scheduled bandwidth (number of PRBs).
  • RNTI Radio Network Temporary Identity
  • CRC Cyclic Redundancy Check
  • Table 1 PTRS RE offset associated with different DMRS ports
  • SDM Spatial Division Multiplexing
  • TRP Transmission/Reception Point
  • different TRPs use the same time-frequency resources, the same DMRS port and different beams to transmit the same data, so as to improve the data transmission performance.
  • Different TRPs use different crystal oscillators to cause different phase shifts in the transmitted signals.
  • one DMRS port can only be associated with one PTRS port.
  • the signal from different TRPs cannot be effectively estimated. The phase shift affects the performance of DMRS channel estimation.
  • an embodiment of the present application proposes a downlink PTRS transmission method, which will be described in detail below with reference to the accompanying drawings.
  • FIG. 2A is a schematic flowchart of a downlink PTRS transmission method according to an embodiment of the present application. As shown in the figure, the method includes:
  • Step 201 The network device determines the physical resource occupied by each of the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port of the terminal;
  • Step 202 The network device sends the PTRS on each PTRS port to the terminal on the physical resource occupied by each PTRS port.
  • Step 203 The terminal determines the physical resources occupied by each of the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port;
  • step 203 is not limited.
  • the number of PTRS ports corresponding to the DMRS port is indicated by configuration information.
  • the configuration information may be indicated by DCI signaling or RRC signaling, for example.
  • the DMRS port includes a single DMRS port, the single DMRS port corresponds to the multiple PTRS ports, and each of the multiple PTRS ports transmits the same signal as the single DMRS port; or
  • the DMRS port includes multiple DMRS ports, and the multiple PTRS ports transmit the same signal with the DMRS port with the lowest port index among the multiple DMRS ports.
  • the terminal may receive scheduling information configured by the network device, and the scheduling information is used to schedule one or more DMRS ports in a CDM group, including the DMRS ports.
  • multiple PTRS ports may only be associated with the DMRS port with the lowest index among the multiple DMRS ports, but in fact they are implicitly associated with all DMRS ports in the same CDM group as the DMRS port. (That is, it can be used for channel estimation of these DMRS ports).
  • Step 204 The terminal receives the PTRS on each PTRS port on the physical resource occupied by each PTRS port.
  • the PTRS on each PTRS port is used to determine the phase offset corresponding to each PTRS port, and the phase offset corresponding to each PTRS port is used to determine the effective phase offset on the DMRS port.
  • Channel estimation result The terminal first determines the phase offset corresponding to each PTRS port according to the PTRS on each PTRS port, and then determines the effective channel on the DMRS port according to the phase offset corresponding to each PTRS port Estimate the result.
  • the phase offset corresponding to each PTRS port is used to determine an effective phase offset for the DMRS; the effective phase offset is used to determine an effective channel estimation result on the DMRS port.
  • the phase offset corresponding to each PTRS port is used to separately perform channel estimation on the DMRS port to obtain multiple reference channel estimation results; the multiple reference channel estimation results are used to combine to obtain the The effective channel estimation result on the DMRS port.
  • different TRPs when different TRPs use the same DMRS port to transmit data, different TRPs can simultaneously transmit different PTRS ports for phase tracking to obtain the phase offsets of multiple TRPs.
  • Performing channel estimation of the DMRS of multiple TRPs based on their respective phase offsets can improve the accuracy of the DMRS channel estimation.
  • phase offset corresponding to each PTRS port is also used to demodulate the physical downlink shared channel PDSCH.
  • the terminal separately determines the phase offset corresponding to each PTRS port according to the PTRS on the multiple PTRS ports, and the phase offset can be used for PDSCH demodulation, thereby improving PDSCH detection performance.
  • the terminal determines the physical resources occupied by each PTRS port among the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port, and secondly, the terminal is at each PTRS port Receive PTRS on each PTRS port on the occupied physical resources. In this way, the same DMRS port can be associated with multiple PTRS ports, thereby obtaining a more accurate phase estimation.
  • the physical resources occupied by each PTRS port are subcarriers occupied by each PTRS port, and the subcarriers occupied by each PTRS port pass through the resource unit used by each PTRS port.
  • the RE offset is determined, and different PTRS ports among the multiple PTRS ports adopt different RE offsets.
  • the terminal may first determine the RE offset adopted by each PTRS port, and then determine the subcarrier occupied by each PTRS port through the resource unit RE offset adopted by each PTRS port.
  • DMRS port 0 is associated with two PTRS ports (PTRS port 0 and port 1)
  • the RE offset of PTRS port 0 is 0, and the RE offset of PTRS port 1 is 1.
  • the RE determined by the RE offset of two PTRS ports in one PRB is: PTRS port 0 occupies the first subcarrier, and PTRS port 1 occupies the second subcarrier.
  • the sub-carrier occupied by each PTRS port is determined by the RE offset adopted by each PTRS port, and different PTRS ports in the multiple PTRS ports use different RE offsets, which can achieve physical resources Differentiate multiple PTRS ports corresponding to the same DMRS port, so that when different TRPs use the same DMRS port to transmit data, different TRPs can transmit different PTRS ports for phase tracking to obtain the phase offsets of multiple TRPs.
  • the channel estimation of the DMRS of multiple TRPs is performed with respective phase offsets, which can improve the accuracy of the DMRS channel estimation.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by one RE offset indication information.
  • the network device may indicate the RE offset of at most two PTRS ports associated with one DMRS port through the RRC signaling resource element offset resourceElementOffset. As shown in Table 2, when the DMRS port is associated with two PTRS ports, the indicated two RE offsets are used for the two associated PTRS ports respectively.
  • a single RE offset indication information is used to indicate multiple PTRS ports, which reduces the amount of data and saves signaling resources.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by multiple RE offset indication information, and each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • the terminal determines the RE offsets respectively corresponding to the multiple PTRS ports according to multiple RE offset indication information sent by the network device, wherein each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • the existing RE offset indication method (as shown in Table 1) can be reused, and two resourceElementOffsets are used to indicate that two RE offsets are used for two PTRS ports.
  • each PTRS port has 1 corresponding RE offset indication information for exclusive indication, which has strong correspondence and does not need to be determined by a second calculation, and the amount of calculation is small.
  • the RE offset adopted by the first PTRS port among the plurality of PTRS ports is indicated by an RE offset indication information; among the plurality of PTRS ports, except for the first PTRS port
  • the RE offset adopted by any PTRS port outside is determined by the RE offset adopted by the first PTRS port.
  • the one RE offset indication information can be implemented through existing RRC signaling resourceElementOffset.
  • the terminal first determines the RE offset adopted by the first PTRS port among the multiple PTRS ports, and then determines the RE offsets of other PTRS ports according to the RE offset adopted by the first PTRS port.
  • the RE offset adopted by any one PTRS port is specifically determined by the RE offset adopted by the first PTRS port as follows:
  • the RE offset adopted by the PTRS port whose port index is m is:
  • K is the preset value
  • I the RE offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports.
  • the RE offset adopted by the first PTRS port is indicated by an RE offset indication information; the RE offset adopted by any PTRS port except the first PTRS port passes through the first PTRS port.
  • the RE offset used by a PTRS port is determined, which saves signaling resources and improves the efficiency of determining the subcarrier of the PTRS port.
  • the physical resource occupied by each PTRS port is the PRB occupied by each PTRS port
  • the PRB occupied by each PTRS port is determined by the PRB occupied by each PTRS port
  • the multiple PTRS Different PTRS ports in the port use different PRB offsets.
  • the terminal determines that the multiple PTRS ports adopt different PRB offsets, so as to determine the PRB occupied by each PTRS port.
  • the PRB occupied by each PTRS port is determined by the PRB offset adopted by each PTRS port, and different PTRS ports in the multiple PTRS ports use different PRB offsets, which can be distinguished from physical resources Multiple PTRS ports corresponding to the same DMRS port, so when different TRPs use the same DMRS port to transmit data, different TRPs can transmit different PTRS ports for phase tracking to obtain the phase offsets of multiple TRPs, based on each
  • the DMRS channel estimation of multiple TRPs can be performed by the phase offset of the DMRS, which can improve the accuracy of the DMRS channel estimation.
  • the PRB offset adopted by the first PTRS port among the plurality of PTRS ports is indicated by a PRB offset indication information; among the plurality of PTRS ports, except for the first PTRS port
  • the PRB offset adopted by any PTRS port outside is determined by the PRB offset adopted by the first PTRS port.
  • the first PTRS port is the PTRS port with the lowest port index among the multiple PTRS ports.
  • the one PRB offset indication information can be implemented through existing RRC signaling resourceElementOffset.
  • the terminal first determines the PRB offset adopted by the first PTRS port among the multiple PTRS ports, and then determines the PRB offsets of other PTRS ports according to the PRB offset adopted by the first PTRS port.
  • the PRB offset adopted by any one PTRS port is specifically determined by the PRB offset adopted by the first PTRS port as follows:
  • the PRB offset adopted by the PTRS port with port index m is:
  • I the PRB offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • K PT-RS is the frequency domain density of the PTRS port
  • the frequency domain density is determined according to the transmission bandwidth of the DMRS port.
  • the PRB offset adopted by the first PTRS port is indicated by a PRB offset indication information; the RE offset adopted by any PTRS port except the first PTRS port passes through the first PTRS port.
  • the PRB offset used by a PTRS port is determined, which saves signaling resources and improves the efficiency of determining the PRB of the PTRS port.
  • the PRB offset adopted by each PTRS port is determined by the port index of each PTRS port.
  • the correspondence between the port index and the PRB offset is pre-configured.
  • the PRB offset used by each PTRS port can be quickly inquired and confirmed, which is fast and efficient.
  • the PRB offset of the PTRS port whose port index is m among the multiple PTRS ports is determined according to the following formula:
  • n RNTI is The radio network temporary identifier RNTI used for scheduling the downlink control information DCI of the DMRS port associated with the PTRS port for cyclic redundancy check CRC scrambling.
  • N RB is the bandwidth occupied by the DMRS port associated with the PTRS port, that is, the number of PRBs.
  • the PRB offset adopted by each PTRS port is dynamically calculated through a formula, which has high accuracy and strong adaptability.
  • the physical resource occupied by each PTRS port is an OFDM symbol occupied by each PTRS port, and different PTRS ports in the multiple PTRS ports use different OFDM symbols.
  • the terminal can determine the OFDM symbols occupied by multiple PTRS ports.
  • different TRPs can send different PTRS ports on different OFDM symbols and associate the same DMRS port, thereby supporting the diversity transmission mode of SDM.
  • different PTRS ports of multiple PTRS ports use different OFDM symbols, so that physical resources can be distinguished from multiple PTRS ports corresponding to the same DMRS port, so that when different TRPs use the same DMRS port
  • different TRPs can transmit different PTRS ports for phase tracking to obtain the phase offsets of multiple TRPs respectively.
  • the DMRS channel estimation of multiple TRPs based on their respective phase offsets can improve the accuracy of DMRS channel estimation. sex.
  • the OFDM symbol occupied by each PTRS port is determined by the port index of the PTRS port.
  • the OFDM symbols occupied by the PTRS port whose port index is m among the multiple PTRS ports are:
  • l m is the OFDM symbol occupied by the m+1 th PTRS port
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • L PT-RS is the time domain interval of the PTRS port
  • the time domain interval is the OFDM symbol interval between adjacent OFDM symbols occupied by one PTRS port.
  • the OFDM symbol occupied by each PTRS port is determined by the port index of the PTRS port, with high accuracy.
  • FIG. 3 is a schematic structural diagram of a terminal 300 provided in an embodiment of the present application.
  • the terminal 300 includes a processor 310 and a memory 320.
  • the terminal determines the physical resources occupied by each PTRS port among the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port, and secondly, the terminal is at each PTRS port Receive PTRS on each PTRS port on the occupied physical resources. In this way, the same DMRS port can be associated with multiple PTRS ports, thereby obtaining a more accurate phase estimation.
  • the physical resources occupied by each PTRS port are subcarriers occupied by each PTRS port, and the subcarriers occupied by each PTRS port pass through the resource unit used by each PTRS port.
  • the RE offset is determined, and different PTRS ports among the multiple PTRS ports adopt different RE offsets.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by one RE offset indication information.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by multiple RE offset indication information, and each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • the RE offset adopted by the first PTRS port among the multiple PTRS ports is indicated by one RE offset indication information
  • the RE offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the RE offset adopted by the first PTRS port.
  • the RE offset adopted by any one PTRS port is specifically determined by the RE offset adopted by the first PTRS port as follows:
  • the RE offset adopted by the PTRS port whose port index is m is:
  • K is the preset value
  • I the RE offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports.
  • the physical resource occupied by each PTRS port is the PRB occupied by each PTRS port
  • the PRB occupied by each PTRS port is determined by the PRB occupied by each PTRS port
  • the multiple PTRS Different PTRS ports in the port use different PRB offsets.
  • the PRB offset adopted by the first PTRS port among the plurality of PTRS ports is indicated by one PRB offset indication information
  • the PRB offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the PRB offset adopted by the first PTRS port.
  • the PRB offset adopted by any one PTRS port is specifically determined by the PRB offset adopted by the first PTRS port as follows:
  • the PRB offset adopted by the PTRS port with port index m is:
  • I the PRB offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • K PT-RS is the frequency domain density of the PTRS port
  • the frequency domain density is determined according to the transmission bandwidth of the DMRS port.
  • the PRB offset adopted by each PTRS port is determined by the port index of each PTRS port.
  • the correspondence between the port index and the PRB offset is pre-configured.
  • the PRB offset of the PTRS port whose port index is m among the multiple PTRS ports is determined according to the following formula:
  • n RNTI is The radio network temporary identifier RNTI used for scheduling the downlink control information DCI of the DMRS port associated with the PTRS port for cyclic redundancy check CRC scrambling.
  • N RB is the bandwidth occupied by the DMRS port associated with the PTRS port, that is, the number of PRBs.
  • the physical resource occupied by each PTRS port is an OFDM symbol occupied by each PTRS port, and different PTRS ports among the multiple PTRS ports adopt different OFDM symbols.
  • the OFDM symbol occupied by each PTRS port is determined by the port index of the PTRS port.
  • the OFDM symbols occupied by the PTRS port whose port index is m among the multiple PTRS ports are:
  • l m is the OFDM symbol occupied by the m+1 th PTRS port
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • L PT-RS is the time domain interval of the PTRS port
  • the time domain interval is the OFDM symbol interval between adjacent OFDM symbols occupied by one PTRS port.
  • the number of PTRS ports corresponding to the DMRS port is indicated by configuration information.
  • the DMRS port includes a single DMRS port, and the multiple PTRS ports transmit the same signal as the single DMRS port; or,
  • the DMRS port includes multiple DMRS ports, and the multiple PTRS ports transmit the same signal with the DMRS port with the lowest port index among the multiple DMRS ports.
  • the PTRS on each PTRS port is used to determine the phase offset corresponding to each PTRS port, and the phase offset corresponding to each PTRS port is used to determine the phase offset on the DMRS port.
  • the effective channel estimation results.
  • the phase offset corresponding to each PTRS port is used to determine the effective phase offset for DMRS; the effective phase offset is used to determine the effective channel estimation result on the DMRS port .
  • the phase offset corresponding to each PTRS port is used to separately perform channel estimation on the DMRS port to obtain multiple reference channel estimation results; the multiple reference channel estimation results are used to combine In order to obtain an effective channel estimation result on the DMRS port.
  • FIG. 4 is a schematic structural diagram of a network device 400 provided by an embodiment of the present application.
  • the network device 400 includes a processor 410, a memory 420, a communication interface 430, and one or more programs. 421, wherein the one or more programs 421 are stored in the foregoing memory 420 and configured to be executed by the foregoing processor 410, and the one or more programs 421 include instructions for performing the following operations.
  • the terminal sends the PTRS on each PTRS port.
  • the terminal determines the physical resources occupied by each PTRS port among the multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port, and secondly, the terminal is at each PTRS port Receive PTRS on each PTRS port on the occupied physical resources. In this way, the same DMRS port can be associated with multiple PTRS ports, thereby obtaining a more accurate phase estimation.
  • the physical resources occupied by each PTRS port are subcarriers occupied by each PTRS port, and the subcarriers occupied by each PTRS port pass through the resource unit used by each PTRS port.
  • the RE offset is determined, and different PTRS ports among the multiple PTRS ports adopt different RE offsets.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by one RE offset indication information.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by multiple RE offset indication information, and each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • the RE offset adopted by the first PTRS port among the multiple PTRS ports is indicated by one RE offset indication information
  • the RE offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the RE offset adopted by the first PTRS port.
  • the RE offset adopted by any one PTRS port is specifically determined by the RE offset adopted by the first PTRS port as follows:
  • the RE offset adopted by the PTRS port whose port index is m is:
  • K is the preset value
  • I the RE offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports.
  • the physical resource occupied by each PTRS port is the PRB occupied by each PTRS port
  • the PRB occupied by each PTRS port is determined by the PRB occupied by each PTRS port
  • the multiple PTRS Different PTRS ports in the port use different PRB offsets.
  • the PRB offset adopted by the first PTRS port among the plurality of PTRS ports is indicated by one PRB offset indication information
  • the PRB offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the PRB offset adopted by the first PTRS port.
  • the PRB offset adopted by any one PTRS port is specifically determined by the PRB offset adopted by the first PTRS port as follows:
  • the PRB offset adopted by the PTRS port with port index m is:
  • I the PRB offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • K PT-RS is the frequency domain density of the PTRS port
  • the frequency domain density is determined according to the transmission bandwidth of the DMRS port.
  • the PRB offset adopted by each PTRS port is determined by the port index of each PTRS port.
  • the correspondence between the port index and the PRB offset is pre-configured.
  • the PRB offset of the PTRS port whose port index is m among the multiple PTRS ports is determined according to the following formula:
  • n RNTI is The radio network temporary identifier RNTI used for scheduling the downlink control information DCI of the DMRS port associated with the PTRS port for cyclic redundancy check CRC scrambling.
  • N RB is the bandwidth occupied by the DMRS port associated with the PTRS port, that is, the number of PRBs.
  • the physical resource occupied by each PTRS port is an OFDM symbol occupied by each PTRS port, and different PTRS ports among the multiple PTRS ports adopt different OFDM symbols.
  • the OFDM symbol occupied by each PTRS port is determined by the port index of the PTRS port.
  • the OFDM symbols occupied by the PTRS port whose port index is m among the multiple PTRS ports are:
  • l m is the OFDM symbol occupied by the m+1 th PTRS port
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • L PT-RS is the time domain interval of the PTRS port
  • the time domain interval is the OFDM symbol interval between adjacent OFDM symbols occupied by one PTRS port.
  • the number of PTRS ports corresponding to the DMRS port is indicated by configuration information.
  • the DMRS port includes a single DMRS port, and the multiple PTRS ports transmit the same signal as the single DMRS port; or,
  • the DMRS port includes multiple DMRS ports, and the multiple PTRS ports transmit the same signal with the DMRS port with the lowest port index among the multiple DMRS ports.
  • the PTRS on each PTRS port is used to determine the phase offset corresponding to each PTRS port, and the phase offset corresponding to each PTRS port is used to determine the phase offset on the DMRS port.
  • the effective channel estimation results.
  • the phase offset corresponding to each PTRS port is used to determine the effective phase offset for DMRS; the effective phase offset is used to determine the effective channel estimation result on the DMRS port .
  • the phase offset corresponding to each PTRS port is used to separately perform channel estimation on the DMRS port to obtain multiple reference channel estimation results; the multiple reference channel estimation results are used to combine In order to obtain an effective channel estimation result on the DMRS port.
  • the terminal includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the terminal into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or in the form of software program modules. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 5 shows a block diagram of a possible functional unit composition of the downlink PTRS transmission device involved in the foregoing embodiment.
  • the downlink PTRS transmission device 500 is applied to a terminal, and specifically includes a processing unit 502 and a communication unit 503.
  • the processing unit 502 is used to control and manage the actions of the terminal.
  • the processing unit 502 is used to support the terminal to perform related processes of the technology described herein.
  • the communication unit 503 is used to support communication between the terminal and other devices.
  • the terminal may also include a storage unit 501 for storing program codes and data of the terminal.
  • the processing unit 502 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), and an application-specific integrated circuit (Application-Specific Integrated Circuit). Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the communication unit 503 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 501 may be a memory.
  • the processing unit 502 is a processor
  • the communication unit 503 is a communication interface
  • the storage unit 501 is a memory
  • the terminal involved in the embodiment of the present application may be the terminal shown in FIG. 3.
  • the processing unit 502 is configured to perform any step performed by the terminal in the foregoing method embodiment, and when performing data transmission such as sending, the communication unit 503 can be optionally invoked to complete the corresponding operation.
  • data transmission such as sending
  • the communication unit 503 can be optionally invoked to complete the corresponding operation.
  • the processing unit 502 is configured to determine the physical resource occupied by each PTRS port among multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port; The PTRS on each PTRS port is received on the physical resource occupied by each PTRS port.
  • the physical resources occupied by each PTRS port are subcarriers occupied by each PTRS port, and the subcarriers occupied by each PTRS port pass through the resource unit used by each PTRS port.
  • the RE offset is determined, and different PTRS ports among the multiple PTRS ports adopt different RE offsets.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by one RE offset indication information.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by multiple RE offset indication information, and each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • the RE offset adopted by the first PTRS port among the multiple PTRS ports is indicated by one RE offset indication information
  • the RE offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the RE offset adopted by the first PTRS port.
  • the RE offset adopted by any one PTRS port is specifically determined by the RE offset adopted by the first PTRS port as follows:
  • the RE offset adopted by the PTRS port whose port index is m is:
  • K is the preset value
  • I the RE offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports.
  • the physical resource occupied by each PTRS port is the PRB occupied by each PTRS port
  • the PRB occupied by each PTRS port is determined by the PRB occupied by each PTRS port
  • the multiple PTRS Different PTRS ports in the port use different PRB offsets.
  • the PRB offset adopted by the first PTRS port among the plurality of PTRS ports is indicated by one PRB offset indication information
  • the PRB offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the PRB offset adopted by the first PTRS port.
  • the PRB offset adopted by any one PTRS port is specifically determined by the PRB offset adopted by the first PTRS port as follows:
  • the PRB offset adopted by the PTRS port with port index m is:
  • I the PRB offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • K PT-RS is the frequency domain density of the PTRS port
  • the frequency domain density is determined according to the transmission bandwidth of the DMRS port.
  • the PRB offset adopted by each PTRS port is determined by the port index of each PTRS port.
  • the correspondence between the port index and the PRB offset is pre-configured.
  • the PRB offset of the PTRS port whose port index is m among the multiple PTRS ports is determined according to the following formula:
  • n RNTI is The radio network temporary identifier RNTI used for scheduling the downlink control information DCI of the DMRS port associated with the PTRS port for cyclic redundancy check CRC scrambling.
  • N RB is the bandwidth occupied by the DMRS port associated with the PTRS port, that is, the number of PRBs.
  • the physical resource occupied by each PTRS port is an OFDM symbol occupied by each PTRS port, and different PTRS ports among the multiple PTRS ports adopt different OFDM symbols.
  • the OFDM symbol occupied by each PTRS port is determined by the port index of the PTRS port.
  • the OFDM symbols occupied by the PTRS port whose port index is m among the multiple PTRS ports are:
  • l m is the OFDM symbol occupied by the m+1 th PTRS port
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • L PT-RS is the time domain interval of the PTRS port
  • the time domain interval is the OFDM symbol interval between adjacent OFDM symbols occupied by one PTRS port.
  • the number of PTRS ports corresponding to the DMRS port is indicated by configuration information.
  • the DMRS port includes a single DMRS port, and the multiple PTRS ports transmit the same signal as the single DMRS port; or,
  • the DMRS port includes multiple DMRS ports, and the multiple PTRS ports transmit the same signal with the DMRS port with the lowest port index among the multiple DMRS ports.
  • the PTRS on each PTRS port is used to determine the phase offset corresponding to each PTRS port, and the phase offset corresponding to each PTRS port is used to determine the phase offset on the DMRS port.
  • the effective channel estimation results.
  • the phase offset corresponding to each PTRS port is used to determine the effective phase offset for DMRS; the effective phase offset is used to determine the effective channel estimation result on the DMRS port .
  • the phase offset corresponding to each PTRS port is used to separately perform channel estimation on the DMRS port to obtain multiple reference channel estimation results; the multiple reference channel estimation results are used to combine In order to obtain an effective channel estimation result on the DMRS port.
  • FIG. 6 shows a block diagram of a possible functional unit composition of the downlink PTRS transmission device involved in the foregoing embodiment.
  • the downlink PTRS transmission apparatus 600 is applied to a network device, and the network device includes a processing unit 602 and a communication unit 603.
  • the processing unit 602 is used to control and manage the actions of the network device.
  • the processing unit 502 is used to support the network device to perform related processes of the technology described herein.
  • the communication unit 603 is used to support communication between the network device and other devices.
  • the network device may also include a storage unit 601 for storing program codes and data of the terminal.
  • the processing unit 602 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), and an application-specific integrated circuit (Application-Specific Integrated Circuit). Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the communication unit 603 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 601 may be a memory.
  • the processing unit 602 is a processor
  • the communication unit 603 is a communication interface
  • the storage unit 601 is a memory
  • the terminal involved in the embodiment of the present application may be the network device shown in FIG. 4.
  • the processing unit 602 is configured to determine the physical resource occupied by each PTRS port among multiple PTRS ports, where the multiple PTRS ports correspond to the same demodulation reference signal DMRS port of the terminal; The PTRS on each PTRS port is sent to the terminal on the physical resource occupied by each PTRS port.
  • the physical resources occupied by each PTRS port are subcarriers occupied by each PTRS port, and the subcarriers occupied by each PTRS port pass through the resource unit used by each PTRS port.
  • the RE offset is determined, and different PTRS ports among the multiple PTRS ports adopt different RE offsets.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by one RE offset indication information.
  • the RE offsets respectively adopted by the multiple PTRS ports are indicated by multiple RE offset indication information, and each RE offset indication information is used to indicate the RE offset of one PTRS port.
  • the RE offset adopted by the first PTRS port among the multiple PTRS ports is indicated by one RE offset indication information
  • the RE offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the RE offset adopted by the first PTRS port.
  • the RE offset adopted by any one PTRS port is specifically determined by the RE offset adopted by the first PTRS port as follows:
  • the RE offset adopted by the PTRS port whose port index is m is:
  • K is the preset value
  • I the RE offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports.
  • the physical resource occupied by each PTRS port is the PRB occupied by each PTRS port
  • the PRB occupied by each PTRS port is determined by the PRB occupied by each PTRS port
  • the multiple PTRS Different PTRS ports in the port use different PRB offsets.
  • the PRB offset adopted by the first PTRS port among the plurality of PTRS ports is indicated by one PRB offset indication information
  • the PRB offset adopted by any one of the multiple PTRS ports except the first PTRS port is determined by the PRB offset adopted by the first PTRS port.
  • the PRB offset adopted by any one PTRS port is specifically determined by the PRB offset adopted by the first PTRS port as follows:
  • the PRB offset adopted by the PTRS port with port index m is:
  • I the PRB offset of the PTRS port whose port index is m
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • K PT-RS is the frequency domain density of the PTRS port
  • the frequency domain density is determined according to the transmission bandwidth of the DMRS port.
  • the PRB offset adopted by each PTRS port is determined by the port index of each PTRS port.
  • the correspondence between the port index and the PRB offset is pre-configured.
  • the PRB offset of the PTRS port whose port index is m among the multiple PTRS ports is determined according to the following formula:
  • n RNTI is The radio network temporary identifier RNTI used for scheduling the downlink control information DCI of the DMRS port associated with the PTRS port for cyclic redundancy check CRC scrambling.
  • N RB is the bandwidth occupied by the DMRS port associated with the PTRS port, that is, the number of PRBs.
  • the physical resource occupied by each PTRS port is an OFDM symbol occupied by each PTRS port, and different PTRS ports among the multiple PTRS ports adopt different OFDM symbols.
  • the OFDM symbol occupied by each PTRS port is determined by the port index of the PTRS port.
  • the OFDM symbols occupied by the PTRS port whose port index is m among the multiple PTRS ports are:
  • l m is the OFDM symbol occupied by the m+1 th PTRS port
  • m is a non-negative integer less than M
  • M is the number of the multiple PTRS ports
  • L PT-RS is the time domain interval of the PTRS port
  • the time domain interval is the OFDM symbol interval between adjacent OFDM symbols occupied by one PTRS port.
  • the number of PTRS ports corresponding to the DMRS port is indicated by configuration information.
  • the DMRS port includes a single DMRS port, and the multiple PTRS ports transmit the same signal as the single DMRS port; or,
  • the DMRS port includes multiple DMRS ports, and the multiple PTRS ports transmit the same signal with the DMRS port with the lowest port index among the multiple DMRS ports.
  • the PTRS on each PTRS port is used to determine the phase offset corresponding to each PTRS port, and the phase offset corresponding to each PTRS port is used to determine the phase offset on the DMRS port.
  • the effective channel estimation results.
  • the phase offset corresponding to each PTRS port is used to determine the effective phase offset for DMRS; the effective phase offset is used to determine the effective channel estimation result on the DMRS port .
  • the phase offset corresponding to each PTRS port is used to separately perform channel estimation on the DMRS port to obtain multiple reference channel estimation results; the multiple reference channel estimation results are used to combine In order to obtain an effective channel estimation result on the DMRS port.
  • the embodiment of the present application also provides a chip, wherein the chip includes a processor, which is used to call and run a computer program from the memory, so that the device installed with the chip executes the part described in the terminal in the above method embodiment Or all steps.
  • the embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the terminal in the above method embodiment Some or all of the steps described.
  • the embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the network in the above-mentioned method embodiment. Part or all of the steps described by the side device.
  • the embodiments of the present application also provide a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to make a computer execute part or all of the steps described in the terminal in the above method embodiment.
  • the computer program product may be a software installation package.
  • the steps of the method or algorithm described in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read Only Memory, ROM), and erasable programmable read-only memory ( Erasable Programmable ROM (EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC may be located in an access network device, a target network device, or a core network device.
  • the processor and the storage medium may also exist as discrete components in the access network device, the target network device, or the core network device.
  • the functions described in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a Digital Video Disc (DVD)), or a semiconductor medium (for example, a Solid State Disk (SSD)) )Wait.

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Abstract

本申请实施例公开了下行PTRS传输方法及相关装置,方法包括:终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;所述终端在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。本申请实施例能够实现相同DMRS端口关联多个PTRS端口,从而获得更准确的相位估计。

Description

下行相位跟踪参考信号PTRS传输方法及相关装置 技术领域
本申请涉及通信技术领域,尤其涉及一种下行PTRS传输方法及相关装置。
背景技术
新空口(New Radio,NR)系统,在下行相位跟踪参考信号(Phase Tracking Reference Signal,PTRS)传输中,网络设备最多可以配置2个PTRS端口,每个PTRS端口对应一个传输配置指示(Transmission Configuration Indicator,TCI)状态和一个码分复用(Code Division Multiplexing,CDM)组的解调参考信号(Demodulation Reference Signal,DMRS)端口,即同一个CDM组的DMRS端口最多只能关联一个PTRS端口。
发明内容
本申请实施例提供一种下行PTRS传输方法及相关装置,以期实现相同DMRS端口关联多个PTRS端口,从而获得更准确的相位估计。
第一方面,本申请实施例提供一种下行PTRS传输方法,包括:
终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;
所述终端在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
第二方面,本申请实施例提供一种下行PTRS传输方法,包括:
网络设备确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;
所述网络设备在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
第三方面,本申请实施例提供一种下行PTRS传输装置,应用于终端,所述装置包括处理单元和通信单元,其中,
所述处理单元,用于确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;以及通过所述通信单元在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
第四方面,本申请实施例提供一种下行PTRS传输装置,应用于网络设备,所述装置包括处理单元和通信单元,其中,
所述处理单元,用于确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;以及通过所述通信单元在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
第五方面,本申请实施例提供一种终端,包括处理器、存储器、通信接口以及一个或多个程序,其中,所述一个或多个程序被存储在所述存储器中,并且被配置由所述处理器执行,所述程序包括用于执行本申请实施例第一方面任一方法中的步骤的指令。
第六方面,本申请实施例提供一种网络设备,包括处理器、存储器、通信接口以及一个或多个程序,其中,所述一个或多个程序被存储在所述存储器中,并且被配置由所述处理器执行,所述程序包括用于执行本申请实施例第二方面任一方法中的步骤的指令。
第七方面,本申请实施例提供了一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如本申请实施例第一方面或第二方面任一方法中所描述的部分或全部步骤。
第八方面,本申请实施例提供了一种计算机可读存储介质,其中,所述计算机可读存储介质存储用 于电子数据交换的计算机程序,其中,所述计算机程序使得计算机执行如本申请实施例第一方面或第二方面任一方法中所描述的部分或全部步骤。
第九方面,本申请实施例提供了一种计算机程序,其中,所述计算机程序可操作来使计算机执行如本申请实施例第一方面或第二方面任一方法中所描述的部分或全部步骤。该计算机程序可以为一个软件安装包。
可以看出,本申请实施例中,终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,多个PTRS端口对应相同的解调参考信号DMRS端口,其次,终端在每个PTRS端口占用的物理资源上接收每个PTRS端口上的PTRS。如此可以实现相同DMRS端口关联多个PTRS端口,从而获得更准确的相位估计。
附图说明
下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1A是本申请实施例提供的一种示例通信系统的系统架构图;
图1B是本申请实施例提供的一种TRP1和TRP2协作分集传输的示意图;
图1C是本申请实施例提供的一种SDM分集传输1的示意图;
图1D是本申请实施例提供的一种SDM分集传输2的示意图;
图1E是本申请实施例提供的一种FDM分集传输1的示意图;
图1F是本申请实施例提供的一种FDM分集传输2的示意图;
图1G是本申请实施例提供的一种TDM分集传输1的示意图;
图1H是本申请实施例提供的一种TDM分集传输2的示意图;
图2A是本申请实施例提供的一种下行PTRS传输方法的流程示意图;
图2B是本申请实施例提供的一种两个DMRS端口的RE资源配置示意图;
图2C是本申请实施例提供的一种两个DMRS端口的PRB资源配置示意图;
图2D是本申请实施例提供的一种两个DMRS端口的OFDM符号资源配置示意图;
图3是本申请实施例提供的一种终端的结构示意图;
图4是本申请实施例提供的一种网络设备的的结构示意图;
图5是本申请实施例提供的一种下行PTRS传输装置的功能单元组成框图;
图6是本申请实施例提供的一种下行PTRS传输装置的功能单元组成框图。
具体实施方式
下面将结合附图对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于如图1A所示的示例通信系统100,该示例通信系统100包括终端110和网络设备120,终端110与网络设备120通信连接。
该示例通信系统100例如可以是:非地面通信网络(Non-Terrestrial Network,NTN)系统、全球移动通信(global system for mobile communications,GSM)系统、码分多址(code division multiple access,CDMA)系统、宽带码分多址(wideband code division multiple access,WCDMA)系统、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、通用移动通信系统(universal mobil etelecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信系统、未来的第五代(5th generation,5G)系统或新无线(new radio,NR)等。
本申请实施例中的终端110可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字助理(personal digital assistant,PDA)、具有无线通信功能的手持设备、 计算设备或连接到无线调制解调器的其它处理设备、中继设备、车载设备、可穿戴设备,未来5G网络中的终端或者未来演进的公用陆地移动通信网络(public land mobile network,PLMN)中的终端等,本申请实施例对此并不限定。
本申请实施例中的网络设备120可以是用于与终端通信的设备,该网络设备可以是全球移动通信(global system for mobile communications,GSM)系统或码分多址(code division multiple access,CDMA)中的基站(base transceiver station,BTS),也可以是宽带码分多址(wideband code division multiple access,WCDMA)系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(evoled NodeB,eNB或eNodeB),还可以是云无线接入网络(cloud radio access network,CRAN)场景下的无线控制器,或者该网络设备可以为中继设备、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备,5G系统中的基站的一个或一组(包括多个天线面板)天线面板,或者,还可以为构成gNB或传输点的网络节点,如基带单元(baseband unit,BBU),或,分布式单元(distributed unit,DU)等,本申请实施例并不限定。
在一些部署中,gNB可以包括集中式单元(centralized unit,CU)和DU。gNB还可以包括有源天线单元(active antenna unit,AAU)。CU实现gNB的部分功能,DU实现gNB的部分功能。比如,CU负责处理非实时协议和服务,实现无线资源控制(radio resource control,RRC),分组数据汇聚层协议(packet data convergence protocol,PDCP)层的功能。DU负责处理物理层协议和实时服务,实现无线链路控制(radio link control,RLC)层、媒体接入控制(media access control,MAC)层和物理(physical,PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息,或者,由PHY层的信息转变而来,因而,在这种架构下,高层信令,如RRC层信令,也可以认为是由DU发送的,或者,由DU+AAU发送的。可以理解的是,网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外,可以将CU划分为接入网(radio access network,RAN)中的网络设备,也可以将CU划分为核心网(core network,CN)中的网络设备,本申请对此不做限定。
在本申请实施例中,终端110或网络设备120包括硬件层、运行在硬件层之上的操作系统层,以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit,CPU)、内存管理单元(memory management unit,MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统,例如,Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且,本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定,只要能够通过运行记录有本申请实施例的提供的方法的代码的程序,以根据本申请实施例提供的方法进行通信即可,例如,本申请实施例提供的方法的执行主体可以是终端,或者,是终端中能够调用程序并执行程序的功能模块。
本申请方案涉及到的关键概念介绍如下。
物理下行共享信道PDSCH分集传输(repetition):为了提高PDSCH的传输可靠性,满足高可靠低时延通信(Ultra-reliable Low-latency Communication,URLLC)的需求,NR引入了PDSCH的分集传输,即携带相同数据的PDSCH通过不同的时隙/TRP/冗余版本等多次传输,从而获得分集增益,降低误检概率(BLER)。具体的,所述分集传输可以在多个时隙进行,也可以在多个传输点(Transmission/Reception Point,TRP)上进行,如图1B所示,TRP1和TRP2协作与终端进行PDSCH的分集传输,ACK/NACK为肯定应答/否定应答。对于多时隙的重复,一个下行控制信息(Downlink Control Information,DCI)可以调度多个携带相同数据的PDSCH在连续的多个时隙上传输,采用相同的频域资源,所述时隙的数量由高层信令配置。对于多TRP的重复,携带相同数据的PDSCH同时在不同TRP上分别传输,可以采用不同的波束(此时需要在一个DCI中指示多个TCI状态,每个TCI状态用于一次重复传输)。重复传输的数据可以采用不同的DMRS端口,也可以采用相同的DMRS端口。
基于多TRP的分集传输:为了满足不同的传输时延和可靠性需求,NR中引入了六种不同的基于多个TRP的分集传输方案,不同的传输方案采用不同分集方式来获得分集增益。这些方案都需要在调度 PDSCH的DCI中指示多个TCI状态,每个TCI状态用于一个TRP的数据传输,从而支持多TRP分集传输。
1)空分复用(Spatial Division Multiplexing,SDM)方案1
在SDM方案1中,网络设备可以调度最多4个传输层(layer)的数据传输,这些数据采用独立的波束(对应不同TCI状态)从两个TRP分别传输,即多个TRP在相同的物理资源上采用不同的DMRS端口和波束(对应不同TCI状态)传输同一个传输块中的数据。其中,数据传输采用的DMRS端口来自不同的CDM组,且不同CDM组的DMRS端口采用不同的TCI状态,即一个TRP对应一个CDM组和一个TCI状态,如图1C所示。
2)SDM方案2:在SDM方案2中,网络设备可以调度最多2个传输层(layer)的数据传输,两个TRP采用相同的时频资源和相同的DMRS端口(可以是1个或2个DMRS端口,来自相同的CDM组)来传输相同数据。不同TRP上传输数据采用不同的波束(对应不同TCI状态),如图1D所示。
3)频分复用FDM方案1:在该FDM方案中,网络设备最多可以调度最多2个传输层(layer)的数据传输,这些数据采用独立的波束(对应不同TCI状态)从两个TRP的不同频域资源上分别传输,即多个TRP在相同时域资源不同频域资源上采用相同的DMRS端口和不同的波束(对应不同TCI状态)传输同一个传输块中的数据。与SDM方案不同的是,FDM方案中不同TRP采用的DMRS端口是相同的,频域资源是不同的。而且,数据传输采用的DMRS端口来自同一个CDM组,即相同的DMRS端口在不同频域资源上对应不同的TCI状态,如图1E所示。
4)频分复用(Frequency Division Multiplexing,FDM)方案2:FDM方案2与FDM方案1主要区别在于不同TRP在不同频域资源上传输的是独立编码的码字,而不是同一个码字中的不同数据。其中,两个码字来自于同一个数据传输块,但采用独立的冗余版本(RV)从而形成不同的码字,在不同的频域资源上传输。两个TRP传输的码字是可以独立解码的,也可以通过软比特合并来获得合并增益,类似于一个传输块的两次(Hybrid Automatic Repeat Request,HARQ)重传,如图1F所示。
5)时分复用(Time Division Multiplexing,TDM)方案1:在该TDM方案中,在一个时隙内的多个迷你时隙(mini-slot,也称为子时隙sub-slot)中,终端采用不同的TCI状态来接收来自不同TRP的相同数据。其中,一个迷你时隙可以包含若干个正交频分复用OFDM符号,且终端在不同迷你时隙中占用的频域资源是相同的。即多个TRP在不同迷你时隙的相同频域资源上采用相同的DMRS端口和不同的波束(对应不同TCI状态)传输相同的数据。终端在这些迷你时隙中采用的调制编码方式(Modulation and Coding Schemem,MCS)是相同的,但RV版本可以不同,此时终端也可以对不同迷你时隙中的数据进行软比特合并,如图1G所示。
6)时分复用TDM方案2:TDM方案2与TDM方案1的区别在于相同的数据是在不同的时隙上传输的,即多个TRP在不同时隙的相同频域资源上采用相同的DMRS端口和不同的波束(对应不同TCI状态)传输相同的数据,如图1H所示。
PTRS传输:在下行PTRS传输中,网络设备最多可以配置2个PTRS端口,每个PTRS端口对应一个TCI状态和一个CDM组的DMRS端口,即同一个CDM组的DMRS端口最多只能关联一个PTRS端口。一个端口上的PTRS信号与关联的CDM组中端口索引最低的DMRS端口(称为该PTRS端口关联的DMRS端口)发送相同的信号,且根据该索引最低的DMRS端口确定采用的RE偏移(如表1所示)。终端确定RE偏移后,可以根据如下公式确定用于传输PTRS的物理资源:
Figure PCTCN2020074675-appb-000001
Figure PCTCN2020074675-appb-000002
其中,i=0,1,2,...,
Figure PCTCN2020074675-appb-000003
表示PTRS端口的PRB偏移,
Figure PCTCN2020074675-appb-000004
如表1所示,如果高层参数资源单元偏移resourceElementOffset在PTRS-上行配置PTRS-UplinkConfig中没有配置,终端假设使用offset00对应的值,n RNTI是用于调度PTRS关联的DMRS端口的DCI进行循环冗余校验(Cyclic Redundancy Check,CRC)加扰所用的无线网络临时标识(Radio Network Temporary Identity,RNTI),可以是小区RNTI  C-RNTI,配置调度RNTI(Configured Scheduling-RNTI,CS-RNTI),调制编码方式-小区RNTI MCS-C-RNTI,准持续信道状态信息RNTI(Semi-Persistent Channel State Information-RNTI,SP-CSI-RNTI),N RB是PTRS关联的DMRS端口所占用的带宽(PRB数),K PT-RS∈{2,4}为PTRS的频域密度,根据调度的带宽(PRB数)确定。
表1 不同DMRS端口关联的PTRS RE偏移
Figure PCTCN2020074675-appb-000005
Figure PCTCN2020074675-appb-000006
基于多个TRP的空分复用(Spatial Division Multiplexing,SDM)分集传输方案中,不同传输点(Transmission/Reception Point,TRP)采用相同的时频资源,相同的DMRS端口和不同的波束来传输相同数据,以提高数据传输性能。
在上述SDM方案2中,不同TRP采用相同的时频资源,相同的DMRS端口和不同的波束来传输相同数据,以提高数据传输性能。不同TRP采用的晶振不同会导致发送的信号存在不同的相位偏移,但现有技术中一个DMRS端口只能关联一个PTRS端口,在不同TRP采用相同DMRS端口时无法有效估计来自不同TRP的信号的相位偏移,从而影响了DMRS信道估计的性能。
针对上述问题,本申请实施例提出一种下行PTRS传输方法,下面结合附图进行详细说明。
请参阅图2A,图2A是本申请实施例提供的一种下行PTRS传输方法的流程示意图,如图所示,该方法包括:
步骤201,网络设备确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;
步骤202,所述网络设备在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
步骤203,终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;
其中,步骤203和步骤201的先后顺序不做限定。
其中,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。所述配置信息例如可以是以通过DCI信令或者RRC信令指示。
其中,所述DMRS端口包括单个DMRS端口,所述单个DMRS端口对应所述多个PTRS端口,所述多个PTRS端口中每个PTRS端口均与所述单个DMRS端口发送相同的信号;或者,所述DMRS端 口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。具体实现中,所述终端可以接收网络设备配置的调度信息,该调度信息用于调度一个CDM组中的一个或多个DMRS端口,其中包括所述DMRS端口。此外,在一种实现方式中,多个PTRS端口可以只关联所述多个DMRS端口中索引最低的DMRS端口,但实际上它们隐含关联了与该DMRS端口在同一个CDM组的所有DMRS端口(即可以用于这些DMRS端口的信道估计)。
步骤204,所述终端在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
具体实现中,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。所述终端先根据所述每个PTRS端口上的PTRS确定所述每个PTRS端口对应的相位偏移,然后根据所述每个PTRS端口对应的相位偏移确定所述DMRS端口上的有效的信道估计结果。
可选的,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
可选的,所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
可见,本示例中,当不同的TRP采用相同的DMRS端口传输数据时,不同TRP可以同时传输不同的PTRS端口用于相位跟踪以分别得到多个TRP的相位偏移。基于各自的相位偏移进行多个TRP的DMRS的信道估计,可以提高DMRS信道估计的准确性。
进一步地,所述每个PTRS端口对应的相位偏移还用于进行物理下行共享信道PDSCH的解调。
可见,本示例中,终端根据所述多个PTRS端口上的PTRS分别确定每个PTRS端口对应的相位偏移,可以将相位偏移用于PDSCH的解调,从而提高PDSCH的检测性能。
可以看出,本申请实施例中,终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,多个PTRS端口对应相同的解调参考信号DMRS端口,其次,终端在每个PTRS端口占用的物理资源上接收每个PTRS端口上的PTRS。如此可以实现相同DMRS端口关联多个PTRS端口,从而获得更准确的相位估计。
在一个可能的实例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
具体实现中,终端可以先确定所述每个PTRS端口采用的RE偏移,然后再通过所述每个PTRS端口采用的资源单元RE偏移确定所述每个PTRS端口占用的子载波。
举例来说,如图2B所示,假设DMRS port 0关联两个PTRS端口(PTRS port 0和port 1),PTRS端口port 0的RE偏移为0,其中,PTRS端口1的RE偏移为1,则两个PTRS端口在一个PRB内根据RE偏移确定的RE为:PTRS端口0占用第一个子载波,PTRS端口1占用第二个子载波。
可见,本示例中,通过每个PTRS端口采用的RE偏移确定每个PTRS端口占用的子载波,且多个PTRS端口中不同的PTRS端口采用不同的RE偏移,如此可以实现从物理资源上区分同一个DMRS端口对应的多个PTRS端口,从而当不同的TRP采用相同的DMRS端口传输数据时,不同TRP可以传输不同的PTRS端口用于相位跟踪以分别得到多个TRP的相位偏移,基于各自的相位偏移进行多个TRP的DMRS的信道估计,可以提高DMRS信道估计的准确性。
在本可能的实例中,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示。
例如,网络设备可以通过RRC信令资源单元偏移resourceElementOffset指示一个DMRS端口关联的最多两个PTRS端口的RE偏移。表2所示,当DMRS端口关联2个PTRS端口时,指示的两个RE偏移分别用于关联的两个PTRS端口。
表2 不同DMRS端口关联的多个PTRS RE偏移
Figure PCTCN2020074675-appb-000007
可见,本示例中,通过单个RE偏移指示信息进指示多个PTRS端口,数据量少,节约信令资源。
在本可能的实例中,所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
其中,终端根据网络设备发送的多个RE偏移指示信息,确定所述多个PTRS端口分别对应的RE偏移,其中每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。具体的,可以重用现有的RE偏移指示方法(如表1所示),采用两个resourceElementOffset来指示两个RE偏移用于两个PTRS端口。
可见,本示例中,每个PTRS端口均有1个对应的RE偏移指示信息进行专属指示,对应性强,无需二次计算来确定,计算量小。
在本可能的实例中,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
其中,所述一个RE偏移指示信息可以通过现有的RRC信令resourceElementOffset来实现。
具体实现中,终端先确定所述多个PTRS端口中第一个PTRS端口采用的RE偏移,再根据第一个PTRS端口采用的RE偏移确定其他PTRS端口的RE偏移。
在本可能的实例中,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
端口索引为m的PTRS端口采用的RE偏移为:
Figure PCTCN2020074675-appb-000008
或,
Figure PCTCN2020074675-appb-000009
或者,
Figure PCTCN2020074675-appb-000010
或,
Figure PCTCN2020074675-appb-000011
其中,K为预设值,
Figure PCTCN2020074675-appb-000012
为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
可见,本示例中,第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定,节约信令资源,提高PTRS端口的子载波的确定效率。
在一个可能的实例中,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个 PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
具体实现中,终端确定所述多个PTRS端口分别采用不同的PRB偏移,从而确定每个PTRS端口占用的PRB。
举例来说,如图2C所示,假设DMRS port 0关联两个PTRS端口(PTRS port 0和port 1),其中,每个PTRS端口的频域密度为K PT-RS=4(表示每4个PRB有一个PRB中包含PTRS,PRB偏移用于确定起始PRB),PTRS port 0的PRB偏移分别为0(即起始PRB为PRB0),PTRS port 1的PRB偏移分别为2(即起始PRB为PRB2),则两个PTRS端口在传输带宽内根据不同的PRB偏移确定的传输PRB为:PTRS port 0的PRB为PRB0、PRB4、PRB8...PRB4n,PTRS port 1的PRB为PRB2、PRB6、PRB10...PRB4n+2,n为非负整数。
可见,本示例中,通过每个PTRS端口采用的PRB偏移确定每个PTRS端口占用的PRB,且多个PTRS端口中不同的PTRS端口采用不同的PRB偏移,如此可以实现从物理资源上区分同一个DMRS端口对应的多个PTRS端口,从而当不同的TRP采用相同的DMRS端口传输数据时,不同TRP可以传输不同的PTRS端口用于相位跟踪以分别得到多个TRP的相位偏移,基于各自的相位偏移进行多个TRP的DMRS的信道估计,可以提高DMRS信道估计的准确性。
在本可能的实例中,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。其中,所述第一个PTRS端口为所述多个PTRS端口中端口索引最低的PTRS端口。
其中,所述一个PRB偏移指示信息可以通过现有的RRC信令resourceElementOffset来实现。
具体实现中,终端先确定所述多个PTRS端口中第一个PTRS端口采用的PRB偏移,再根据第一个PTRS端口采用的PRB偏移,确定其他PTRS端口的PRB偏移。
在本可能的实例中,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
端口索引为m的PTRS端口采用的PRB偏移为:
Figure PCTCN2020074675-appb-000013
或,
Figure PCTCN2020074675-appb-000014
其中,
Figure PCTCN2020074675-appb-000015
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
可见,本示例中,第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的PRB偏移确定,节约信令资源,提高PTRS端口的PRB的确定效率。
在本可能的实例中,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
在本可能的实例中,所述端口索引和所述PRB偏移的对应关系是预先配置的。
可见,本示例中,通过预先配置的端口索引和所述PRB偏移的对应关系,可以快速查询确认每个PTRS端口采用的PRB偏移,快捷高效。
在本可能的实例中,所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
Figure PCTCN2020074675-appb-000016
或者,
Figure PCTCN2020074675-appb-000017
其中,
Figure PCTCN2020074675-appb-000018
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
可见,本示例中,通过公式动态计算每个PTRS端口采用的PRB偏移,准确度高、适应性强。
在一个可能的实例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
具体实现中,终端可以确定多个PTRS端口各自占用的OFDM符号,此时不同的TRP可以在不同的OFDM符号上发送不同的PTRS端口,并关联相同的DMRS端口,从而支持SDM的分集传输方式。
可见,本示例中,多个PTRS端口中不同的PTRS端口采用不同的OFDM符号,如此可以实现从物理资源上区分同一个DMRS端口对应的多个PTRS端口,从而当不同的TRP采用相同的DMRS端口传输数据时,不同TRP可以传输不同的PTRS端口用于相位跟踪以分别得到多个TRP的相位偏移,基于各自的相位偏移进行多个TRP的DMRS的信道估计,可以提高DMRS信道估计的准确性。
在本可能的实例中,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
在本可能的实例中,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
l m=(l 0+m)mod L或
Figure PCTCN2020074675-appb-000019
其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
其中,可以用于PTRS端口的时域间隔大于1的场景,即L PT-RS>1。
举例来说,如图2D所示,假设DMRS port 0关联两个PTRS端口(PTRS port 0和port 1),其中,PTRS端口0占用OFDM索引为l 0={3,5,7,9},根据MCS确定,PTRS端口1占用OFDM索引为l 1=l 0+1={4,6,8,10}。
可见,本示例中,通过PTRS端口的端口索引确定每个PTRS端口所占用的OFDM符号,准确度高。
与上述图2A所示的实施例一致的,请参阅图3,图3是本申请实施例提供的一种终端300的结构示意图,如图所示,所述终端300包括处理器310、存储器320、通信接口330以及一个或多个程序321,其中,所述一个或多个程序321被存储在上述存储器320中,并且被配置由上述处理器310执行,所述一个或多个程序321包括用于执行如下操作的指令。
确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;以及在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
可以看出,本申请实施例中,终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,多个PTRS端口对应相同的解调参考信号DMRS端口,其次,终端在每个PTRS端口占用的物理资源上接收每个PTRS端口上的PTRS。如此可以实现相同DMRS端口关联多个PTRS端口,从而获得更准确的相位估计。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示, 每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
端口索引为m的PTRS端口采用的RE偏移为:
Figure PCTCN2020074675-appb-000020
或,
Figure PCTCN2020074675-appb-000021
其中,K为预设值,
Figure PCTCN2020074675-appb-000022
为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
端口索引为m的PTRS端口采用的PRB偏移为:
Figure PCTCN2020074675-appb-000023
或,
Figure PCTCN2020074675-appb-000024
其中,
Figure PCTCN2020074675-appb-000025
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
在一个可能的示例中,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
在一个可能的示例中,所述端口索引和所述PRB偏移的对应关系是预先配置的。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
Figure PCTCN2020074675-appb-000026
或者,
Figure PCTCN2020074675-appb-000027
其中,
Figure PCTCN2020074675-appb-000028
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号, 所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
在一个可能的示例中,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
l m=(l 0+m)mod L或
Figure PCTCN2020074675-appb-000029
其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
在一个可能的示例中,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
在一个可能的示例中,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
在一个可能的示例中,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
请参阅图4,图4是本申请实施例提供的一种网络设备400的结构示意图,如图所示,所述网络设备400包括处理器410、存储器420、通信接口430以及一个或多个程序421,其中,所述一个或多个程序421被存储在上述存储器420中,并且被配置由上述处理器410执行,所述一个或多个程序421包括用于执行如下操作的指令。
确定多个P TRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;以及在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
可以看出,本申请实施例中,终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,多个PTRS端口对应相同的解调参考信号DMRS端口,其次,终端在每个PTRS端口占用的物理资源上接收每个PTRS端口上的PTRS。如此可以实现相同DMRS端口关联多个PTRS端口,从而获得更准确的相位估计。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个 PTRS端口采用的RE偏移确定:
端口索引为m的PTRS端口采用的RE偏移为:
Figure PCTCN2020074675-appb-000030
或,
Figure PCTCN2020074675-appb-000031
其中,K为预设值,
Figure PCTCN2020074675-appb-000032
为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
端口索引为m的PTRS端口采用的PRB偏移为:
Figure PCTCN2020074675-appb-000033
或,
Figure PCTCN2020074675-appb-000034
其中,
Figure PCTCN2020074675-appb-000035
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
在一个可能的示例中,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
在一个可能的示例中,所述端口索引和所述PRB偏移的对应关系是预先配置的。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
Figure PCTCN2020074675-appb-000036
或者,
Figure PCTCN2020074675-appb-000037
其中,
Figure PCTCN2020074675-appb-000038
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
在一个可能的示例中,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
l m=(l 0+m)mod L或
Figure PCTCN2020074675-appb-000039
其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端 口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
在一个可能的示例中,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
在一个可能的示例中,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
在一个可能的示例中,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
上述主要从各个网元之间交互的角度对本申请实施例的方案进行了介绍。可以理解的是,终端为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对终端进行功能单元的划分,例如,可以对应各个功能划分各个功能单元,也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件程序模块的形式实现。需要说明的是,本申请实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
在采用集成的单元的情况下,图5示出了上述实施例中所涉及的下行PTRS传输装置的一种可能的功能单元组成框图。下行PTRS传输装置500应用于终端,具体包括:处理单元502和通信单元503。处理单元502用于对终端的动作进行控制管理,例如,处理单元502用于支持终端执行本文所描述的技术的相关过程。通信单元503用于支持终端与其他设备的通信。终端还可以包括存储单元501,用于存储终端的程序代码和数据。
其中,处理单元502可以是处理器或控制器,例如可以是中央处理器(Central Processing Unit,CPU),通用处理器,数字信号处理器(Digital Signal Processor,DSP),专用集成电路(Application-Specific Integrated Circuit,ASIC),现场可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。所述处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。通信单元503可以是通信接口、收发器、收发电路等,存储单元501可以是存储器。当处理单元502为处理器,通信单元503为通信接口,存储单元501为存储器时,本申请实施例所涉及的终端可以为图3所示的终端。
具体实现时,所述处理单元502用于执行如上述方法实施例中由终端执行的任一步骤,且在执行诸如发送等数据传输时,可选择的调用所述通信单元503来完成相应操作。下面进行详细说明。
所述处理单元502,用于确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;以及通过所述通信单元在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端 口中不同的PTRS端口采用不同的RE偏移。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
端口索引为m的PTRS端口采用的RE偏移为:
Figure PCTCN2020074675-appb-000040
或,
Figure PCTCN2020074675-appb-000041
其中,K为预设值,
Figure PCTCN2020074675-appb-000042
为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
端口索引为m的PTRS端口采用的PRB偏移为:
Figure PCTCN2020074675-appb-000043
或,
Figure PCTCN2020074675-appb-000044
其中,
Figure PCTCN2020074675-appb-000045
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
在一个可能的示例中,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
在一个可能的示例中,所述端口索引和所述PRB偏移的对应关系是预先配置的。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
Figure PCTCN2020074675-appb-000046
或者,
Figure PCTCN2020074675-appb-000047
其中,
Figure PCTCN2020074675-appb-000048
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行 控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
在一个可能的示例中,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
l m=(l 0+m)mod L或
Figure PCTCN2020074675-appb-000049
其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
在一个可能的示例中,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
在一个可能的示例中,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
在一个可能的示例中,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
在采用集成的单元的情况下,图6示出了上述实施例中所涉及的下行PTRS传输装置的一种可能的功能单元组成框图。下行PTRS传输装置600应用于网络设备,该网络设备包括:处理单元602和通信单元603。处理单元602用于对网络设备的动作进行控制管理,例如,处理单元502用于支持网络设备执行本文所描述的技术的相关过程。通信单元603用于支持网络设备与其他设备的通信。网络设备还可以包括存储单元601,用于存储终端的程序代码和数据。
其中,处理单元602可以是处理器或控制器,例如可以是中央处理器(Central Processing Unit,CPU),通用处理器,数字信号处理器(Digital Signal Processor,DSP),专用集成电路(Application-Specific Integrated Circuit,ASIC),现场可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。所述处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。通信单元603可以是通信接口、收发器、收发电路等,存储单元601可以是存储器。当处理单元602为处理器,通信单元603为通信接口,存储单元601为存储器时,本申请实施例所涉及的终端可以为图4所示的网络设备。
所述处理单元602用于确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;以及通过所述通信单元在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示。
在一个可能的示例中,所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
端口索引为m的PTRS端口采用的RE偏移为:
Figure PCTCN2020074675-appb-000050
或,
Figure PCTCN2020074675-appb-000051
其中,K为预设值,
Figure PCTCN2020074675-appb-000052
为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
在一个可能的示例中,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
在一个可能的示例中,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
端口索引为m的PTRS端口采用的PRB偏移为:
Figure PCTCN2020074675-appb-000053
或,
Figure PCTCN2020074675-appb-000054
其中,
Figure PCTCN2020074675-appb-000055
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
在一个可能的示例中,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
在一个可能的示例中,所述端口索引和所述PRB偏移的对应关系是预先配置的。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
Figure PCTCN2020074675-appb-000056
或者,
Figure PCTCN2020074675-appb-000057
其中,
Figure PCTCN2020074675-appb-000058
为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
在一个可能的示例中,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
在一个可能的示例中,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
在一个可能的示例中,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
l m=(l 0+m)mod L或
Figure PCTCN2020074675-appb-000059
其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
在一个可能的示例中,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
在一个可能的示例中,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
在一个可能的示例中,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
在一个可能的示例中,所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
可以理解的是,由于方法实施例与装置实施例为相同技术构思的不同呈现形式,因此,本申请中方法实施例部分的内容应同步适配于装置实施例部分,此处不再赘述。
本申请实施例还提供了一种芯片,其中,该芯片包括处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如上述方法实施例中终端所描述的部分或全部步骤。
本申请实施例还提供了一种计算机可读存储介质,其中,所述计算机可读存储介质存储用于电子数据交换的计算机程序,其中,所述计算机程序使得计算机执行如上述方法实施例中终端所描述的部分或全部步骤。
本申请实施例还提供了一种计算机可读存储介质,其中,所述计算机可读存储介质存储用于电子数据交换的计算机程序,其中,所述计算机程序使得计算机执行如上述方法实施例中网络侧设备所描述的部分或全部步骤。
本申请实施例还提供了一种计算机程序产品,其中,所述计算机程序产品包括计算机程序,所述计算机程序可操作来使计算机执行如上述方法实施例中终端所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
本申请实施例所描述的方法或者算法的步骤可以以硬件的方式来实现,也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read Only Memory,ROM)、可擦除可编程只读存储器(Erasable Programmable ROM,EPROM)、电可擦可编程只读存储器(Electrically EPROM,EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。当然,存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外,该ASIC可以位于接入网设备、目标网络设备或核心网设备中。当然,处理器和存储介质也可以作为分立组件存在于接入网设备、目标网络设备或核心网设备中。
本领域技术人员应该可以意识到,在上述一个或多个示例中,本申请实施例所描述的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如,软盘、硬盘、磁带)、光介质(例如,数字视频光盘(Digital Video Disc,DVD))、或者半导体介质(例如,固态硬盘(Solid State Disk,SSD))等。
以上所述的具体实施方式,对本申请实施例的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本申请实施例的具体实施方式而已,并不用于限定本申请实施例的保护范围,凡在本申请实施例的技术方案的基础之上,所做的任何修改、等同替换、改进等,均应包括在本申请实施例的保护范围之内。

Claims (73)

  1. 一种下行相位跟踪参考信号PTRS传输方法,其特征在于,包括:
    终端确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;
    所述终端在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
  2. 根据权利要求1所述的方法,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
  3. 根据权利要求2所述的方法,其特征在于,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示;或者,
    所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
  4. 根据权利要求2所述的方法,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
  5. 根据权利要求4所述的方法,其特征在于,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
    端口索引为m的PTRS端口采用的RE偏移为:
    Figure PCTCN2020074675-appb-100001
    或,
    Figure PCTCN2020074675-appb-100002
    其中,K为预设值,
    Figure PCTCN2020074675-appb-100003
    为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
  6. 根据权利要求1所述的方法,其特征在于,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
  7. 根据权利要求6所述的方法,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
  8. 根据权利要求7所述的方法,其特征在于,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
    端口索引为m的PTRS端口采用的PRB偏移为:
    Figure PCTCN2020074675-appb-100004
    或,
    Figure PCTCN2020074675-appb-100005
    其中,
    Figure PCTCN2020074675-appb-100006
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根 据所述DMRS端口的传输带宽确定。
  9. 根据权利要求6所述的方法,其特征在于,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
  10. 根据权利要求9所述的方法,其特征在于,所述端口索引和所述PRB偏移的对应关系是预先配置的;或者,
    所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
    Figure PCTCN2020074675-appb-100007
    或者,
    Figure PCTCN2020074675-appb-100008
    其中,
    Figure PCTCN2020074675-appb-100009
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
  11. 根据权利要求1所述的方法,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
  12. 根据权利要求11所述的方法,其特征在于,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
  13. 根据权利要求12所述的方法,其特征在于,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
    l m=(l 0+m)mod L或
    Figure PCTCN2020074675-appb-100010
    其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
  14. 根据权利要求1-13任一项所述的方法,其特征在于,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
  15. 根据权利要求1所述的方法,其特征在于,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
    所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
  16. 根据权利要求1-15任一项所述的方法,其特征在于,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
  17. 根据权利要求16所述的方法,其特征在于,所述每个PTRS端口对应的相位偏移用于确定用 于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果;或者,
    所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
  18. 一种下行PTRS传输方法,其特征在于,包括:
    网络设备确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;
    所述网络设备在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
  19. 根据权利要求18所述的方法,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
  20. 根据权利要求19所述的方法,其特征在于,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示;或者,
    所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
  21. 根据权利要求19所述的方法,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
  22. 根据权利要求21所述的方法,其特征在于,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
    端口索引为m的PTRS端口采用的RE偏移为:
    Figure PCTCN2020074675-appb-100011
    或,
    Figure PCTCN2020074675-appb-100012
    其中,K为预设值,
    Figure PCTCN2020074675-appb-100013
    为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
  23. 根据权利要求18所述的方法,其特征在于,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
  24. 根据权利要求23所述的方法,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
  25. 根据权利要求24所述的方法,其特征在于,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
    端口索引为m的PTRS端口采用的PRB偏移为:
    Figure PCTCN2020074675-appb-100014
    或,
    Figure PCTCN2020074675-appb-100015
    其中,
    Figure PCTCN2020074675-appb-100016
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS 端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
  26. 根据权利要求23所述的方法,其特征在于,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
  27. 根据权利要求26所述的方法,其特征在于,所述端口索引和所述PRB偏移的对应关系是预先配置的;或者,
    所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
    Figure PCTCN2020074675-appb-100017
    或者,
    Figure PCTCN2020074675-appb-100018
    其中,
    Figure PCTCN2020074675-appb-100019
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
  28. 根据权利要求18所述的方法,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
  29. 根据权利要求28述的方法,其特征在于,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
  30. 根据权利要求29述的方法,其特征在于,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
    l m=(l 0+m)mod L或
    Figure PCTCN2020074675-appb-100020
    其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
  31. 根据权利要求18-30任一项所述的方法,其特征在于,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
  32. 根据权利要求18所述的方法,其特征在于,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
    所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
  33. 根据权利要求18-32任一项所述的方法,其特征在于,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
  34. 根据权利要求33所述的方法,其特征在于,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果;或者,
    所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
  35. 一种下行PTRS传输装置,其特征在于,应用于终端,所述装置包括处理单元和通信单元,其 中,
    所述处理单元,用于确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应相同的解调参考信号DMRS端口;以及通过所述通信单元在所述每个PTRS端口占用的物理资源上接收所述每个PTRS端口上的PTRS。
  36. 根据权利要求35所述的装置,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
  37. 根据权利要求36所述的装置,其特征在于,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示;或者,
    所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
  38. 根据权利要求36所述的装置,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
  39. 根据权利要求38所述的装置,其特征在于,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
    端口索引为m的PTRS端口采用的RE偏移为:
    Figure PCTCN2020074675-appb-100021
    或,
    Figure PCTCN2020074675-appb-100022
    其中,K为预设值,
    Figure PCTCN2020074675-appb-100023
    为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
  40. 根据权利要求35所述的装置,其特征在于,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
  41. 根据权利要求40所述的装置,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
  42. 根据权利要求41所述的装置,其特征在于,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
    端口索引为m的PTRS端口采用的PRB偏移为:
    Figure PCTCN2020074675-appb-100024
    或,
    Figure PCTCN2020074675-appb-100025
    其中,
    Figure PCTCN2020074675-appb-100026
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
  43. 根据权利要求40所述的装置,其特征在于,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
  44. 根据权利要求43所述的装置,其特征在于,所述端口索引和所述PRB偏移的对应关系是预先配置的;或者,
    所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
    Figure PCTCN2020074675-appb-100027
    或者,
    Figure PCTCN2020074675-appb-100028
    其中,
    Figure PCTCN2020074675-appb-100029
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
  45. 根据权利要求35所述的装置,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
  46. 根据权利要求45所述的装置,其特征在于,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
  47. 根据权利要求46所述的装置,其特征在于,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
    l m=(l 0+m)mod L或
    Figure PCTCN2020074675-appb-100030
    其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
  48. 根据权利要求35-47任一项所述的装置,其特征在于,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
  49. 根据权利要求35所述的装置,其特征在于,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
    所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
  50. 根据权利要求35-49任一项所述的装置,其特征在于,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
  51. 根据权利要求50所述的装置,其特征在于,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果;或者,
    所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
  52. 一种下行PTRS传输装置,其特征在于,应用于网络设备,所述装置包括处理单元和通信单元,其中,
    所述处理单元,用于确定多个PTRS端口中每个PTRS端口占用的物理资源,其中,所述多个PTRS端口对应终端的相同的解调参考信号DMRS端口;以及通过所述通信单元在所述每个PTRS端口占用的物理资源上向所述终端发送所述每个PTRS端口上的PTRS。
  53. 根据权利要求52所述的装置,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的子载波,所述每个PTRS端口占用的子载波通过所述每个PTRS端口采用的资源单元RE偏移确定,所述多个PTRS端口中不同的PTRS端口采用不同的RE偏移。
  54. 根据权利要求53所述的装置,其特征在于,所述多个PTRS端口分别采用的RE偏移通过一个RE偏移指示信息进行指示;或者,
    所述多个PTRS端口分别采用的RE偏移通过多个RE偏移指示信息进行指示,每个RE偏移指示信息用于指示一个PTRS端口的RE偏移。
  55. 根据权利要求53所述的装置,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的RE偏移通过一个RE偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的RE偏移通过所述第一个PTRS端口采用的RE偏移确定。
  56. 根据权利要求55所述的装置,其特征在于,所述任意一个PTRS端口采用的RE偏移具体按照如下方式通过所述第一个PTRS端口采用的RE偏移确定:
    端口索引为m的PTRS端口采用的RE偏移为:
    Figure PCTCN2020074675-appb-100031
    或,
    Figure PCTCN2020074675-appb-100032
    其中,K为预设值,
    Figure PCTCN2020074675-appb-100033
    为端口索引为m的PTRS端口的RE偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量。
  57. 根据权利要求52所述的装置,其特征在于,所述每个PTRS端口占用的物理资源为每个PTRS端口占用的PRB,所述每个PTRS端口占用的PRB通过每个PTRS端口占用的PRB确定,所述多个PTRS端口中不同的PTRS端口采用不同的PRB偏移。
  58. 根据权利要求57所述的装置,其特征在于,所述多个PTRS端口中第一个PTRS端口采用的PRB偏移通过一个PRB偏移指示信息进行指示;
    所述多个PTRS端口中除所述第一个PTRS端口之外的任意一个PTRS端口采用的PRB偏移通过所述第一个PTRS端口采用的PRB偏移确定。
  59. 根据权利要求58所述的装置,其特征在于,所述任意一个PTRS端口采用的PRB偏移具体按照如下方式通过所述第一个PTRS端口采用的PRB偏移确定:
    端口索引为m的PTRS端口采用的PRB偏移为:
    Figure PCTCN2020074675-appb-100034
    或,
    Figure PCTCN2020074675-appb-100035
    其中,
    Figure PCTCN2020074675-appb-100036
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS端口的数量,K PT-RS为PTRS端口的频域密度,所述频域密度以PRB为单位,且所述频域密度根据所述DMRS端口的传输带宽确定。
  60. 根据权利要求57所述的装置,其特征在于,所述每个PTRS端口采用的PRB偏移通过所述每个PTRS端口的端口索引确定。
  61. 根据权利要求60所述的装置,其特征在于,所述端口索引和所述PRB偏移的对应关系是预先配置的;或者,
    所述多个PTRS端口中端口索引为m的PTRS端口的PRB偏移根据如下公式确定:
    Figure PCTCN2020074675-appb-100037
    或者,
    Figure PCTCN2020074675-appb-100038
    其中,
    Figure PCTCN2020074675-appb-100039
    为端口索引为m的PTRS端口的PRB偏移,m为小于M的非负整数,M为所述多个PTRS 端口的数量,K PT-RS为所述PTRS端口的频域密度,n RNTI是用于调度PTRS端口关联的DMRS端口的下行控制信息DCI进行循环冗余校验CRC加扰所用的无线网络临时标识RNTI,N RB是PTRS端口关联的DMRS端口所占用的带宽即PRB数。
  62. 根据权利要求52所述的装置,其特征在于,所述每个PTRS端口占用的物理资源为所述每个PTRS端口占用的OFDM符号,所述多个PTRS端口中不同的PTRS端口采用不同的OFDM符号。
  63. 根据权利要求62所述的装置,其特征在于,所述每个PTRS端口所占用的OFDM符号通过所述PTRS端口的端口索引确定。
  64. 根据权利要求63所述的装置,其特征在于,所述多个PTRS端口中端口索引为m的PTRS端口占用的OFDM符号为:
    l m=(l 0+m)mod L或
    Figure PCTCN2020074675-appb-100040
    其中,l m为第m+1个PTRS端口占用的OFDM符号,m为小于M的非负整数,M为所述多个PTRS端口的数量,L PT-RS为PTRS端口的时域间隔,L为PDSCH在一个时隙内占用的OFDM符号数或者一个时隙包含的OFDM符号数,所述时域间隔为一个PTRS端口占用的相邻OFDM符号之间的OFDM符号间隔。
  65. 根据权利要求52-64任一项所述的装置,其特征在于,所述DMRS端口对应的PTRS端口的数目通过配置信息进行指示。
  66. 根据权利要求52所述的装置,其特征在于,所述DMRS端口包括单个DMRS端口,所述多个PTRS端口与所述单个DMRS端口发送相同的信号;或者,
    所述DMRS端口包括多个DMRS端口,所述多个PTRS端口与所述多个DMRS端口中端口索引最低的DMRS端口发送相同的信号。
  67. 根据权利要求52-66任一项所述的装置,其特征在于,所述每个PTRS端口上的PTRS用于确定所述每个PTRS端口对应的相位偏移,所述每个PTRS端口对应的相位偏移用于确定所述DMRS端口上的有效的信道估计结果。
  68. 根据权利要求67所述的装置,其特征在于,所述每个PTRS端口对应的相位偏移用于确定用于DMRS的有效相位偏移;所述有效相位偏移用于确定所述DMRS端口上的有效的信道估计结果;或者,所述每个PTRS端口对应的相位偏移用于分别进行所述DMRS端口上的信道估计以得到多个参考信道估计结果;所述多个参考信道估计结果用于合并以得到所述DMRS端口上的有效的信道估计结果。
  69. 一种终端,其特征在于,包括处理器、存储器、通信接口,以及一个或多个程序,所述一个或多个程序被存储在所述存储器中,并且被配置由所述处理器执行,所述程序包括用于执行如权利要求1-17任一项所述的方法中的步骤的指令。
  70. 一种网络设备,其特征在于,包括处理器、存储器、通信接口,以及一个或多个程序,所述一个或多个程序被存储在所述存储器中,并且被配置由所述处理器执行,所述程序包括用于执行如权利要求18-34任一项所述的方法中的步骤的指令。
  71. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1-17或18-34中任一项所述的方法。
  72. 一种计算机可读存储介质,其特征在于,其存储用于电子数据交换的计算机程序,其中,所述计算机程序使得计算机执行如权利要求1-17或18-34中任一项所述的方法。
  73. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1-17或18-34中任一项所述的方法。
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