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WO2021226970A1 - Procédé et appareil de réception de signal, et système - Google Patents

Procédé et appareil de réception de signal, et système Download PDF

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Publication number
WO2021226970A1
WO2021226970A1 PCT/CN2020/090375 CN2020090375W WO2021226970A1 WO 2021226970 A1 WO2021226970 A1 WO 2021226970A1 CN 2020090375 W CN2020090375 W CN 2020090375W WO 2021226970 A1 WO2021226970 A1 WO 2021226970A1
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WIPO (PCT)
Prior art keywords
symbol
data signal
pdsch
same
frequency domain
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PCT/CN2020/090375
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English (en)
Chinese (zh)
Inventor
陈哲
张磊
张健
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富士通株式会社
陈哲
张磊
张健
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Application filed by 富士通株式会社, 陈哲, 张磊, 张健 filed Critical 富士通株式会社
Priority to PCT/CN2020/090375 priority Critical patent/WO2021226970A1/fr
Publication of WO2021226970A1 publication Critical patent/WO2021226970A1/fr

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

Definitions

  • This application relates to the field of communications.
  • Rel-16 has enhanced the transmission mechanism of downlink data signals. This enables downlink data signals to be sent through multiple TRPs (transmission and reception points). Specifically, these downlink data signals can be transmitted from different TRPs through time division multiplexing, frequency division multiplexing, and space division multiplexing. This transmission method can enhance the robustness of the downlink data signal, thereby meeting the corresponding reliability requirements.
  • PDSCH Physical Downlink Shared Channel
  • TRP is characterized as TCI state (transmission configuration indication state, transmission configuration indication state).
  • a signal receiving method wherein the method includes:
  • the terminal device receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the terminal device receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal;
  • DM-RS demodulation reference signal
  • the data signal is related to the at least two transmission configuration indication (TCI) states
  • one symbol of the DM-RS is the same as the TCI state associated or allocated with one symbol of the data signal
  • the data signal The channel that the one symbol of the DM-RS has experienced on one antenna port can be obtained (is inferred) according to the channel that the one symbol of the DM-RS has experienced on the same antenna port.
  • TCI transmission configuration indication
  • a signal sending method wherein the method includes:
  • the network device generates first indication information, a data signal, and a DM-RS associated with the data signal; wherein the first indication information indicates at least two transmission configuration indication (TCI) states;
  • TCI transmission configuration indication
  • the data signal is related to the at least two TCI states, one symbol of the DM-RS is the same as the TCI state associated or assigned to one symbol of the data signal, and the one symbol of the data signal
  • the channel experienced (conveyed) on one antenna port can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • a signal receiving method wherein the method includes:
  • the terminal device receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the terminal device receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal;
  • DM-RS demodulation reference signal
  • the precoding granularity of the data signal is wideband precoding granularity, and the allocated frequency domain resources of the data signal are based on the number of TCI states indicated by the first indication information. Divided into a corresponding number of frequency domain parts, one symbol of the DM-RS corresponds to the same frequency domain part as one symbol of the data signal, and the one symbol of the data signal is located on one antenna port.
  • the channel that is experienced (is conveyed) can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • a signal sending method wherein the method includes:
  • the network device generates first indication information, a data signal, and a DM-RS associated with the data signal, wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the precoding granularity of the data signal is wideband precoding granularity, and the frequency domain resources allocated to the data signal are divided into corresponding ones according to the number of TCI states indicated by the first indication information
  • the number of frequency domain parts, one symbol of the DM-RS and one symbol of the data signal correspond to the same frequency domain part, and the one symbol of the data signal is experienced on one antenna port (is
  • the conveyed channel can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • a signal receiving device wherein the device includes:
  • a first receiving unit which receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • a second receiving unit which receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal;
  • DM-RS demodulation reference signal
  • the data signal is related to the at least two transmission configuration indication (TCI) states
  • one symbol of the DM-RS is the same as the TCI state associated or allocated with one symbol of the data signal
  • the data signal The channel that the one symbol of the DM-RS has experienced on one antenna port can be obtained (is inferred) according to the channel that the one symbol of the DM-RS has experienced on the same antenna port.
  • TCI transmission configuration indication
  • a signal sending device wherein the device includes:
  • a generating unit which generates first indication information, a data signal, and a DM-RS associated with the data signal; wherein the first indication information indicates at least two transmission configuration indication (TCI) states;
  • TCI transmission configuration indication
  • a sending unit that sends the first indication information, the data signal, and the DM-RS associated with the data signal to a terminal device;
  • the data signal is related to the at least two TCI states, one symbol of the DM-RS is the same as the TCI state associated or assigned to one symbol of the data signal, and the one symbol of the data signal
  • the channel experienced (conveyed) on one antenna port can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • a signal receiving device wherein the device includes:
  • a first receiving unit which receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • a second receiving unit which receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal;
  • DM-RS demodulation reference signal
  • the precoding granularity of the data signal is wideband precoding granularity, and the allocated frequency domain resources of the data signal are based on the number of TCI states indicated by the first indication information. Divided into a corresponding number of frequency domain parts, one symbol of the DM-RS corresponds to the same frequency domain part as one symbol of the data signal, and the one symbol of the data signal is located on one antenna port.
  • the channel that is experienced (is conveyed) can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • a signal sending device wherein the device includes:
  • a generating unit that generates first indication information, a data signal, and a DM-RS associated with the data signal, wherein the first indication information indicates at least two transmission configuration indication (TCI) states;
  • a sending unit that sends the first indication information, the data signal, and the DM-RS associated with the data signal to a terminal device;
  • the precoding granularity of the data signal is wideband precoding granularity, and the frequency domain resources allocated to the data signal are divided into corresponding ones according to the number of TCI states indicated by the first indication information
  • the number of frequency domain parts, one symbol of the DM-RS and one symbol of the data signal correspond to the same frequency domain part, and the one symbol of the data signal is experienced on one antenna port (is
  • the conveyed channel can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • One of the beneficial effects of the embodiments of the present application is that according to the embodiments of the present application, it is possible to prevent the terminal device from erroneously combining DM-RSs corresponding to different TRPs when performing channel estimation.
  • Figure 1 is a schematic diagram of the PDSCH time division multiplexing mechanism
  • Figure 2 is a schematic diagram of PDSCH frequency division multiplexing mechanism A
  • Figure 3 is a schematic diagram of PDSCH frequency division multiplexing mechanism B
  • FIG. 4 is a schematic diagram of a signal receiving method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a signal sending method according to an embodiment of the present application.
  • FIG. 6 is another schematic diagram of a signal receiving method according to an embodiment of the present application.
  • FIG. 7 is another schematic diagram of a signal sending method according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a signal receiving device according to an embodiment of the present application.
  • FIG. 9 is another schematic diagram of a signal receiving device according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a signal sending device according to an embodiment of the present application.
  • FIG. 11 is another schematic diagram of a signal sending device according to an embodiment of the present application.
  • Fig. 12 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • Fig. 14 is a schematic diagram of a network device according to an embodiment of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the terms, but they do not indicate the spatial arrangement or chronological order of these elements. These elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” can refer to a network that meets any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE-A). Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • LTE-A LTE-A
  • Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • 1G generation
  • 2G 2.5G
  • 2.75G 3G
  • 4G 4G
  • 4.5G future 5G
  • New Radio NR, New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay), or low-power node (such as femto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low-power node such as femto, pico, etc.
  • base station can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "Terminal Equipment” (TE, Terminal Equipment).
  • Terminal equipment can be fixed or mobile, and can also be called mobile station (MS, Mobile Station), terminal, user, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc. Wait.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • cellular phones Cellular Phone
  • PDAs personal digital assistants
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • a terminal device may also be a machine or device that performs monitoring or measurement.
  • it may include, but is not limited to: Machine Type Communication (MTC) terminals, In-vehicle communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • Figure 1 is a schematic diagram of the PDSCH time division multiplexing mechanism (for example, TDMSchemeA).
  • the PDSCH time division multiplexing mechanism means that in one time slot, the PDSCH can correspond to more than one transmission opportunity (transmission occasion). Among them, each transmission opportunity does not overlap each other in the time domain, and each opportunity corresponds to a different TCI state.
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives the scheduling instruction (the scheduling instruction may be before the time slot n or the time slot n), in the time slot n, at two PDSCH transmission opportunities, it receives the PDSCH.
  • the PDSCH part corresponding to the first transmission opportunity is PDSCH Rep#1, which is transmitted through TRP#1, which corresponds to TRP#1 (that is, corresponding to the first TCI state, TCI#1); the second transmission The PDSCH part corresponding to the opportunity is PDSCH Rep#2, which is transmitted through TRP#2, which corresponds to TRP#2 (that is, the second TCI state, TCI#2).
  • Figure 2 is a schematic diagram of PDSCH frequency division multiplexing scheme A (FDMSchemeA).
  • the PDSCH frequency division multiplexing mechanism A means that in one time slot, the PDSCH can correspond to one transmission opportunity.
  • the transmission opportunity can be divided into more than one non-overlapping parts in the frequency domain. Among them, each part corresponds to a different TCI state.
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives the scheduling instruction (the scheduling instruction may be before the time slot n or the time slot n), and in the time slot n, at a PDSCH transmission opportunity, it receives the PDSCH.
  • the first part of the PDSCH corresponding to the transmission opportunity is PDSCH part#1, which is transmitted through TRP#1, which corresponds to TRP#1 (that is, the first TCI state, TCI#1); the transmission opportunity corresponds to The second part of the PDSCH is PDSCH part#2, which is transmitted through TRP#1, which corresponds to TRP#2 (that is, the second TCI state, TCI#2).
  • Figure 3 is a schematic diagram of PDSCH frequency division multiplexing scheme B (FDMSchemeB).
  • the PDSCH frequency division multiplexing mechanism B means that in one time slot, the PDSCH can correspond to 2 transmission opportunities. The two opportunities do not overlap in the frequency domain. Among them, each part corresponds to a different TCI state.
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives the scheduling instruction (the scheduling instruction may be before the time slot n or the time slot n), and in the time slot n, the PDSCH is received at the indicated two PDSCH transmission opportunities.
  • the PDSCH corresponding to the first transmission opportunity is PDSCH Rep#1, which is transmitted through TRP#1, which corresponds to TRP#1 (that is, the first TCI state, TCI#1); the PDSCH corresponding to the second transmission opportunity It is PDSCH Rep#2, which is transmitted through TRP#1, which corresponds to TRP#2 (that is, the second TCI state, TCI#2).
  • one TCI state may be associated with one or two DL (Downlink, downlink, referred to as downlink) reference signals.
  • each DL reference signal has a corresponding QCL type (quasi-colocation type, quasi-colocation type).
  • QCL types can be divided into typeA, typeB, typeC, and typeD.
  • typeD corresponds to Spatial Rx parameter (spatial receiving parameter).
  • Channel (channel) is derived (infer).
  • the above requirements include: the DM-RS symbol and the PDSCH symbol correspond to the same antenna port, the DM-RS symbol and the PDSCH symbol are in the same time slot, and the DM-RS symbol and the PDSCH symbol belong to the same PRG (Precoding Resource Block Group, precoding resource block group), and the DM-RS symbol and the PDSCH symbol are in the same PDSCH scheduling resource.
  • the terminal device considers that the channel experienced by the DM-RS symbol and the PDSCH symbol is the same, so that the demodulation information contained in the DM-RS symbol is used to demodulate the corresponding data information contained in the PDSCH symbol.
  • the terminal equipment According to this method, the PDSCH may be demodulated incorrectly.
  • PDSCH Rep#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2; PDSCH Rep#2 is in two symbols. Each symbol includes two DM-RSs, namely DM-RS#3 and DM-RS#4.
  • DM-RS#1, DM-RS#2, DM-RS#3, and DM-RS#4 belong to the same PRG.
  • the first symbol of PDSCH Rep#1 and the symbol of DM-RS#3 are in the same time slot, according to the existing method, the first symbol of PDSCH Rep#1 is the same as the symbol of DM-RS#3.
  • the corresponding channels are the same, that is, the qualified data information contained in the first symbol of PDSCHRep#1 can be demodulated according to DM-RS#3.
  • the first symbol of PDSCH Rep#1 and the channel corresponding to DM-RS#3 are not the same, in other words, they come from different TRP/spatial directions. If DM-RS#3 is used, PDSCH Rep#1 may not be demodulated correctly, resulting in system performance degradation.
  • the PRB bundling indication corresponding to the PDSCH is ‘wideband’, that is, PDSCH part#1 and PDSCH part#2 belong to the same PRG.
  • PDSCH part#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2;
  • PDSCH part#2 includes two DM-RSs on two symbols, respectively DM-RS#3 and DM-RS#4.
  • DM-RS#1, DM-RS#2, DM-RS#3, and DM-RS#4 belong to the same time slot.
  • the first symbol of PDSCH part#1 corresponds to the channel where DM-RS#3 is located. It is the same, that is, the qualified data information contained in the first symbol of PDSCH part#1 can be demodulated according to DM-RS#3.
  • the first symbol of PDSCH part#1 and the channel corresponding to DM-RS#3 are not the same, in other words, they come from different TRP/space directions. If DM-RS#3 is used, PDSCH Rep#1 may not be demodulated correctly, resulting in system performance degradation.
  • the PRB bundling indication corresponding to the PDSCH is ‘wideband’, that is, PDSCH Rep#1 and PDSCH Rep#2 belong to the same PRG.
  • PDSCH Rep#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2;
  • PDSCH Rep#2 includes two DM-RSs on two symbols, respectively DM-RS#3 and DM-RS#4.
  • DM-RS#1, DM-RS#2, DM-RS#3, and DM-RS#4 belong to the same time slot.
  • the first symbol of PDSCH Rep#1 corresponds to the channel where DM-RS#3 is located. It is the same, that is, the qualified data information contained in the first symbol of PDSCH Rep#1 can be demodulated according to DM-RS#3.
  • the first symbol of PDSCH Rep#1 and the channel corresponding to DM-RS#3 are not the same, in other words, they come from different TRP/spatial directions. If DM-RS#3 is used, PDSCH Rep#1 may not be demodulated correctly, resulting in system performance degradation.
  • this application proposes corresponding solutions, so that when the terminal device performs channel estimation, it can avoid mistakenly combining DM-RSs corresponding to different TRPs, or can Avoid using wrong DM-RS to demodulate data.
  • FIG. 4 is a schematic diagram of a signal receiving method according to an embodiment of the present application. Please refer to FIG. 4. The method includes:
  • the terminal device receives first indication information, where the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the terminal device receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal; wherein, the data signal is related to at least two TCI states, and one symbol of the DM-RS is related to The associated or assigned TCI status of one symbol of the data signal is the same, and the channel that the one symbol of the data signal has experienced (conveyed) on one antenna port can be based on the DM- The channel experienced by the one symbol of the RS on the same antenna port is inferred.
  • DM-RS demodulation reference signal
  • the relationship between the DM-RS and the data signal is determined using the TCI state, which enables the corresponding data signal to be demodulated using the correct DM-RS, thereby ensuring the reliability of data transmission. Improved system performance.
  • the data signal is associated with at least two TCI states, which means that different parts of the data signal are associated with different TCI states.
  • the data signal is divided into two parts.
  • One part of the data signal (such as PDSCH Rep#1) is associated with a TCI state (TCI#1)
  • the other part of the data signal (such as PDSCH Rep#2) is associated with a TCI.
  • Status (TCI#2)
  • the data signal is also divided into two parts.
  • TCI#1 TCI state
  • PDSCH part#2 TCI state
  • TCI#2 TCI state
  • TCI#2 TCI state
  • TCI#2 TCI state
  • TCI#2 TCI state
  • TCI#2 TCI state
  • TCI state can be 3 or more.
  • each TCI state is associated with a different part of the data signal.
  • one symbol of the DM-RS and one symbol of the data signal have the same associated or assigned TCI state, which means that one symbol of the DM-RS is the same as the data signal
  • One of the symbols is associated with the same TCI state.
  • PDSCH Rep#1, DM-RS#1 and DM-RS#2 are all associated with TCI#1, then (any) one symbol of PDSCH Rep#1 and DM-RS#1 ( Any) one symbol and (any) symbol of DM-RS#2 are associated with TCI#1; PDSCH Rep#2 is associated with DM-RS#3 and DM-RS#4 are all associated with TCI#2, then PDSCH Rep#2 (Any) a symbol is associated with (any) a symbol of DM-RS#3 and (any) a symbol of DM-RS#4 are associated with TCI#2; taking Figure 2 as an example, PDSCH part#1 and DM-RS# 1 and DM-RS#2 are both associated with TCI#1, then (any) symbol of PDSCH part#1 is associated with (any) symbol of DM-RS#1 and (any) symbol of DM-RS#2 TCI#1; PDSCH part#2, DM-RS#3 and
  • the channel that the one symbol of the data signal has experienced on one antenna port can be based on the channel that the one symbol of the DM-RS has experienced on the same antenna port (Is inferred), that is, the received data signal on one antenna port is demodulated using the DM-RS of the same antenna port with the same TCI state of the data signal, that is, the DM-RS and The TCI status of the data signal is the same as the antenna port.
  • a channel refers to a physical channel.
  • the antenna port numbers of DM-RS#1, DM-RS#2, and PDSCH Rep#1 are all 1000, and DM-RS#1 and DM-RS#2 are used to demodulate PDSCH Rep#1.
  • PDSCH Rep#1 on one symbol for example, the 3rd symbol in slot n
  • DM-RS# on one symbol for example, the 3rd symbol in slot n
  • DM-RS#2 on one symbol for example, the seventh symbol in slot n
  • the PDSCH Rep#1 on one symbol (for example, the 3rd symbol in slot n) can be based on the DM-RS on one symbol (for example, the 3rd symbol in slot n) #1 and DM-RS#2 demodulation on one symbol (for example, the seventh symbol in slot n).
  • the antenna port numbers of DM-RS#3, DM-RS#4, and PDSCH Rep#2 are all 1000, and DM-RS#3 and DM-RS#4 can be used to demodulate PDSCH Rep# 2.
  • PDSCH Rep#2 on one symbol for example, the 10th symbol in slot n
  • DM-RS# on one symbol for example, the 10th symbol in slot n
  • DM-RS#4 on one symbol for example, the 14th symbol in slot n
  • the PDSCH Rep#2 on one symbol (for example, the 10th symbol in slot n) can be based on the DM-RS on one symbol (for example, the 10th symbol in slot n) #3 and DM-RS#4 demodulation on one symbol (for example, the 14th symbol in slot n).
  • the antenna port numbers of DM-RS#1, DM-RS#2, and PDSCH part#1 are all 1000, and DM-RS#1 and DM-RS#2 can be used to demodulate PDSCH part#1 .
  • PDSCH part#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS# on one symbol for example, the 6th symbol in slot n
  • DM-RS#2 on one symbol for example, the 10th symbol in slot n
  • the PDSCH part#1 on one symbol (for example, the 6th symbol in slot n) can be based on the DM-RS on one symbol (for example, the 6th symbol in slot n) #1 and DM-RS#2 demodulation on one symbol (for example, the 10th symbol in slot n).
  • the antenna port numbers of DM-RS#3, DM-RS#4, and PDSCH part#2 are all 1000, and DM-RS#3 and DM-RS#4 can be used to demodulate PDSCH part# 2.
  • PDSCH part#2 on one symbol for example, the 6th symbol in slot n
  • DM-RS# on one symbol for example, the 6th symbol in slot n
  • DM-RS#4 on one symbol for example, the 10th symbol in slot n
  • the PDSCH part#2 on one symbol (for example, the 6th symbol in slot n) can be based on the DM-RS on one symbol (for example, the 6th symbol in slot n) #3 and DM-RS#4 demodulation on one symbol (for example, the 10th symbol in slot n).
  • the antenna port numbers of DM-RS#1, DM-RS#2, and PDSCH Rep#1 are all 1000, and DM-RS#1 and DM-RS#2 can be used to demodulate PDSCH Rep#1 .
  • PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS# on one symbol for example, the 6th symbol in slot n
  • DM-RS#2 on one symbol for example, the 10th symbol in slot n
  • the PDSCH Rep#1 on one symbol (for example, the 6th symbol in slot n) can be based on the DM-RS on one symbol (for example, the 6th symbol in slot n) #1 and DM-RS#2 demodulation on one symbol (for example, the 10th symbol in slot n).
  • the antenna port numbers of DM-RS#3, DM-RS#4, and PDSCH Rep#2 are all 1000, and DM-RS#3 and DM-RS#4 can be used to demodulate PDSCH Rep# 2.
  • PDSCH Rep#2 on one symbol for example, the 6th symbol in slot n
  • DM-RS# on one symbol for example, the 6th symbol in slot n
  • DM-RS#4 on one symbol for example, the 10th symbol in slot n
  • the PDSCH Rep#2 on one symbol can be based on the DM-RS on one symbol (for example, the 6th symbol in slot n) #3 and DM-RS#4 demodulation on one symbol (for example, the 10th symbol in slot n).
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same scheduling resource of the data signal.
  • the scheduling resource of the data signal can be understood as the time-frequency resource indicated by the scheduling indication corresponding to the above-mentioned data signal.
  • the scheduling indication can be sent through PDCCH, MAC-CE signaling or RRC signaling, and this application is not limited to this, and the PDCCH is taken as an example below.
  • the PDCCH is used to schedule the PDSCH
  • the PDSCH includes two parts, namely PDSCH Rep#1 and PDSCH Rep#2.
  • PDSCH Rep#1 on one symbol for example, the third symbol in slot n
  • DM-RS#1 on one symbol for example, the third symbol in slot n
  • one symbol for example, DM-RS#2 on the 7th symbol in slot n
  • PDSCH Rep#2 on one symbol for example, the 10th symbol in slot n
  • DM-RS#3 and a symbol (e.g., the 14th symbol in slot n) on DM-RS#4 are in the same data signal scheduling resource .
  • the PDCCH is used to schedule the PDSCH
  • the PDSCH includes two parts, namely PDSCH part#1 and PDSCH part#2.
  • PDSCH part#1 on a symbol for example, the 6th symbol in slot n
  • DM-RS#1 on a symbol for example, the 6th symbol in slot n
  • a symbol for example, DM-RS#2 on the 10th symbol in slot n
  • PDSCH part#2 on one symbol for example, the 6th symbol in slot n
  • DM-RS#3 on a symbol (e.g., the 10th symbol in time slot n) are in the same data signal scheduling resource .
  • the PDCCH is used to schedule the PDSCH
  • the PDSCH includes two parts, namely, PDSCH Rep#1 and PDSCH Rep#2.
  • PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, DM-RS#2 on the 10th symbol in slot n
  • PDSCH Rep#2 on one symbol for example, the 6th symbol in slot n
  • DM-RS#3 on a symbol e.g., the 10th symbol in time slot n
  • the scheduling resource of the data signal may also correspond to the same TCI state, but the application is not limited to this.
  • the PDCCH is used to schedule the PDSCH, and the PDSCH includes two parts, namely PDSCH Rep#1 and PDSCH Rep#2, where PDSCH Rep#1 is the TCI state corresponding to the first transmission opportunity is TCI# 1.
  • PDSCH Rep#2 that is, the TCI state corresponding to the second transmission opportunity is TCI#2.
  • PDSCH Rep#1 on one symbol for example, the third symbol in slot n
  • DM-RS#1 on one symbol for example, the third symbol in slot n
  • one symbol for example, DM-RS#2 on the 7th symbol in slot n
  • PDSCH Rep#2 on one symbol for example, the 10th symbol in slot n
  • DM-RS#3 on a symbol e.g., the 10th symbol in slot n
  • DM-RS#4 on a symbol e.g., the 14th symbol in slot n
  • the PDCCH is used to schedule the PDSCH
  • the PDSCH includes two parts, namely PDSCH part#1 and PDSCH part#2.
  • PDSCH part#1 on a symbol for example, the 6th symbol in slot n
  • DM-RS#1 on a symbol for example, the 6th symbol in slot n
  • a symbol for example, DM-RS#2 on the 10th symbol in time slot n
  • PDSCH on one symbol (for example, the 6th symbol in time slot n) part#2, DM-RS#3 on one symbol (for example, the 6th symbol in slot n) and DM-RS#4 on one symbol for example, the 10th symbol in slot n
  • the status of the data signal is in the scheduling resource.
  • the PDCCH is used to schedule the PDSCH
  • the PDSCH includes two parts, namely, PDSCH Rep#1 and PDSCH Rep#2.
  • PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, DM-RS#2 on the 10th symbol in time slot n
  • DM-RS#3 on a symbol for example, the 6th symbol in slot n
  • DM-RS#4 on a symbol for example, the 10th symbol in slot n
  • the status of the data signal is in the scheduling resource.
  • the terminal device can correctly distinguish the DM-RS used to demodulate the data signal according to the scheduling resource corresponding to the data signal and the TCI status of the scheduling resource, thereby avoiding demodulation failure and improving the robustness of the system .
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same frequency domain resource.
  • the above-mentioned one symbol of the DM-RS and the above-mentioned one symbol of the data signal are in the same subcarrier.
  • the foregoing one symbol of the DM-RS and the foregoing one symbol of the data signal are in the same precoding resource block group (PRG).
  • PRG precoding resource block group
  • PDSCH Rep#1 on one symbol for example, the third symbol in slot n
  • DM-RS#1 on one symbol for example, the third symbol in slot n
  • one symbol for example, the frequency domain resources of DM-RS#2 on the 7th symbol in time slot n all belong to PRG#1;
  • PDSCH Rep#2 on one symbol for example, the 10th symbol in time slot n
  • one symbol for example, the frequency domain resources of DM-RS#3 on the 10th symbol in time slot n and DM-RS#4 on one symbol (for example, the 14th symbol in time slot n) belong to PRG#2.
  • PDSCH part#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • the frequency domain resources of DM-RS#2 on the 10th symbol in slot n all belong to PRG#1
  • PDSCH part#2 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the frequency domain resources of DM-RS#3 on the 6th symbol in slot n and DM-RS#4 on one symbol (for example, the 10th symbol in slot n) belong to PRG#2.
  • PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the frequency domain resources of DM-RS#2 on the 10th symbol in time slot n all belong to PRG#1;
  • PDSCH Rep#2 on one symbol for example, the 6th symbol in time slot n
  • one symbol for example, the frequency domain resources of DM-RS#3 on the 6th symbol in time slot n and DM-RS#4 on one symbol (for example, the 10th symbol in time slot n) belong to PRG#2.
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same time slot.
  • PDSCH Rep#1 on one symbol for example, the third symbol in slot n
  • DM-RS#1 on one symbol for example, the third symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#2 on the 7th symbol in slot n belong to slot n;
  • PDSCH Rep#2 on one symbol for example, the 10th symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#3 on the 10th symbol in slot n and DM-RS#4 on one symbol (for example, the 14th symbol in slot n) belong to slot n.
  • PDSCH part#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#2 on the 10th symbol in slot n belong to slot n;
  • PDSCH part#2 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#3 on the 6th symbol in slot n and DM-RS#4 on one symbol (for example, the 10th symbol in slot n) belong to slot n.
  • PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#2 on the 10th symbol in slot n belong to slot n;
  • PDSCH Rep#2 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#3 on the 6th symbol in slot n and DM-RS#4 on one symbol (for example, the 10th symbol in slot n) belong to slot n.
  • the one symbol of the DM-RS and the one symbol of the data signal are within the same transmission/reception occasion.
  • the transmission opportunity here refers to the transmission opportunity corresponding to the above-mentioned data signal.
  • the PDSCH includes two parts, namely PDSCH Rep#1 and PDSCH Rep#2, and their or their time-frequency resources correspond to the first transmission opportunity and the second transmission opportunity, respectively.
  • DM-RS#1 and DM-RS#2 and PDSCH Rep#1 are all in the first transmission opportunity
  • DM-RS#3, DM-RS#4 and PDSCH Rep#2 are all in the second transmission opportunity Within the transmission opportunity.
  • PDSCH Rep#1 on one symbol for example, the third symbol in slot n
  • DM-RS#1 on one symbol for example, the third symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#2 on the 7th symbol in slot n belong to the first transmission opportunity;
  • PDSCH Rep#2 on one symbol for example, the 10th symbol in slot n
  • the time domain resources of DM-RS#3 on a symbol (for example, the 10th symbol in slot n) and DM-RS#4 on a symbol for example, the 14th symbol in slot n) belong to the second transmission Chance.
  • PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • DM-RS#1 on one symbol for example, the 6th symbol in slot n
  • one symbol for example, the time domain resources of DM-RS#2 on the 10th symbol in slot n belong to the first transmission opportunity;
  • PDSCH Rep#2 on one symbol for example, the 6th symbol in slot n
  • the time domain resources of DM-RS#3 on a symbol (for example, the 6th symbol in slot n) and DM-RS#4 on a symbol for example, the 10th symbol in slot n) belong to the second transmission Chance.
  • the terminal device can correctly distinguish the DM-RS used for demodulating data according to different transmission opportunities of the data signal, thereby avoiding demodulation failure and improving the robustness of the system.
  • the above-mentioned first indication information indicates at least two TCI states, that is, the above-mentioned first indication information is related to the above-mentioned at least two TCI states.
  • the first indication information is associated with at least two TCI states, and this application does not limit the way of indication, which may be indicated by means of mapping, or indicated by other means.
  • the above-mentioned first indication information is indicated by downlink control information (DCI) for scheduling the above-mentioned data signal.
  • DCI downlink control information
  • the first indication information may be indicated by the DCI in the PDCCH shown in FIG. 1 to FIG. 3.
  • the DCI is used to schedule the PDSCH, but the application is not limited to this.
  • the method further includes:
  • the terminal device receives second indication information, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: a time division multiplexing mechanism (as shown in Figure 1 Show), frequency division multiplexing mechanism A (shown in Figure 2), and frequency division multiplexing mechanism B (shown in Figure 3).
  • a time division multiplexing mechanism as shown in Figure 1 Show
  • frequency division multiplexing mechanism A shown in Figure 2
  • frequency division multiplexing mechanism B shown in Figure 3
  • the above-mentioned second indication information is included in RRC signaling, and the corresponding information element (Information Element, IE) name is, for example, repetition scheme, but the present application is not limited to this.
  • the second indication information may indicate that the repetition mechanism of the data signal is the PDSCH time division multiplexing mechanism, as shown in FIG. 1; it may also indicate that the repetition mechanism of the data signal is the PDSCH frequency division multiplexing mechanism A, as shown in FIG. 2;
  • the repetition mechanism of the indicated data signal is PDSCH frequency division multiplexing mechanism B, as shown in Figure 3. That is, the method in the embodiment of the present application is applicable to both the time division multiplexing mechanism and the frequency division multiplexing mechanism. This application is not limited to the timing and manner of sending the second instruction information.
  • the TCI state is used to determine the relationship between the DM-RS and the data signal, so that the corresponding data signal can be demodulated using the correct DM-RS, thereby ensuring the reliability of data transmission and improving system performance.
  • FIG. 4 only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution between operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the foregoing content, and are not limited to the description of the foregoing FIG. 4.
  • PDSCH including PDSCH Rep#1 and PDSCH Rep#1, or PDSCH part#1 and PDSCH part#1
  • DM-RS#1, DM-RS#2, DM-RS#3 The antenna port of DM-RS#4 is set to 1000. This application is not limited to this, and their antenna port numbers can also be 1001, 1002 or others.
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives configuration information (second indication information), which indicates the repetition mechanism of the data signal.
  • the corresponding IE name is for example repetitionscheme.
  • the repetition mechanism of the data signal is indicated as PDSCH.
  • Time division multiplexing mechanism (tdmSchemeA).
  • the terminal device receives the scheduling instruction (first instruction information), and the scheduling instruction may be before the time slot n or the time slot n.
  • the scheduling indication is related to two or more TCI states.
  • the codepoint indicated by the TCI field in the indication information of the scheduling indication is associated with two or more TCI states.
  • the terminal device receives the data signal (used to carry the PDSCH) at two PDSCH transmission opportunities in the time slot n according to the resource allocation instruction in the instruction information of the foregoing scheduling instruction.
  • the PDSCH part corresponding to the first transmission opportunity is PDSCH Rep#1, which corresponds to TRP#1, which is the first TCI state, TCI#1;
  • the PDSCH part corresponding to the second transmission opportunity is PDSCH Rep#2, It corresponds to TRP#2, which is the second TCI state, TCI#2.
  • PDSCH Rep#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2; PDSCH Rep#2 includes two DM-RSs on two symbols, namely DM-RS#3 and DM-RS#4.
  • the scheduled PDSCH (PDSCH Rep#1 and PDSCH Rep#2) are associated with multiple DM-RSs, including DM-RS#1, DM-RS#2, DM-RS#3, and DM-RS#4.
  • PDSCH Rep#1 is associated with DM-RS#1, DM-RS#2 or assigned the same TCI state, or more specifically, DM-RS#1, DM-RS#2 and PDSCH Rep#1 corresponds to the scheduling resource (resource A) in the same TCI state.
  • the physical channel experienced by the PDSCH on the 3rd symbol of time slot n can be based on the DM-RS#1 sent on the 3rd symbol of time slot n
  • the physical channel experienced by DM-RS#2 transmitted on the seventh symbol of time slot n that is to say, the PDSCH transmitted on the third symbol of time slot n can be based on DM-RS#1 sent on the symbol and DM-RS#2 sent on the 7th symbol of slot n are demodulated.
  • DM-RS#3, DM-RS#4, and PDSCH Rep#2 correspond to scheduling resources (resource B) in the same TCI state.
  • resource B corresponding to the same TCI state
  • the physical channel experienced by the PDSCH on the 10th symbol of slot n can be based on the DM-RS#3 sent on the 10th symbol of slot n
  • the physical channel experienced by DM-RS#4 transmitted on the 14th symbol of time slot n can be based on DM-RS#3 sent on the symbol and DM-RS#4 sent on the 14th symbol of slot n are demodulated.
  • resource A or B can be further understood as a transmission opportunity, for example, resource A is the first transmission opportunity, and resource B is the second transmission opportunity.
  • the data signal (for example, PDSCH Rep#1) can be prevented from using DM-RS (for example, DM-RS#3, DM-RS#4) corresponding to different TCI states for demodulation, and the reliability of the system is improved.
  • DM-RS for example, DM-RS#3, DM-RS#4
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives configuration information (second indication information), which indicates the repetition mechanism of the data signal.
  • the corresponding IE name is for example repetitionscheme.
  • the repetition mechanism of the data signal is indicated as PDSCH.
  • Frequency division multiplexing scheme A (fdmSchemeA).
  • the terminal equipment receives the scheduling instruction (first instruction information), and the scheduling instruction may be before the time slot n or the time slot n.
  • the scheduling indication is related to two or more TCI states.
  • the indicated codepoint corresponding to the TCI field in the indication information of the scheduling indication is associated with two or more TCI states.
  • the terminal device receives the data signal (PDSCH) at one PDSCH transmission opportunity in the time slot n according to the resource allocation instruction in the instruction information of the scheduling instruction.
  • the first part of the PDSCH corresponding to this transmission opportunity is PDSCH part#1, which corresponds to TRP#1, which is the first TCI state, TCI#1;
  • the second part of the PDSCH corresponding to this transmission opportunity is PDSCH part#2 , which corresponds to TRP#2, which is the second TCI state, TCI#2.
  • the PRB bundling indication corresponding to the PDSCH is "wideband", that is, PDSCH part#1 and PDSCH part#2 belong to the same PRG.
  • PDSCH part#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2; PDSCH part#2 includes two DM-RSs on two symbols, respectively DM-RS#3 and DM-RS#4.
  • the scheduled PDSCH (PDSCH part#1 and PDSCH part#2) is associated with multiple DM-RSs, including DM-RS#1, DM-RS#2, DM-RS#3, and DM-RS#4.
  • PDSCH part#1 is associated with DM-RS#1, DM-RS#2 or assigned the same TCI state, or more specifically, DM-RS#1, DM-RS#2 and PDSCH part#1 corresponds to the scheduling resource (resource C) in the same TCI state.
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#1 sent on the 6th symbol of slot n
  • the physical channel experienced by DM-RS#2 transmitted on the 10th symbol of time slot n that is to say, the PDSCH transmitted on the 6th symbol of time slot n can be based on DM-RS#1 sent on the symbol and DM-RS#2 sent on the 10th symbol of slot n are demodulated.
  • DM-RS#3, DM-RS#4, and PDSCH part#2 correspond to scheduling resources (resource D) in the same TCI state.
  • resource D corresponding to the same TCI state
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#3 sent on the 6th symbol of slot n
  • the physical channel experienced by DM-RS#4 transmitted on the 10th symbol of time slot n that is to say, the PDSCH transmitted on the 6th symbol of time slot n can be based on DM-RS#3 sent on the symbol and DM-RS#4 sent on the 10th symbol of slot n are demodulated.
  • resource C or D can be further understood as PRBs corresponding to the same TCI state.
  • the data signal (for example, PDSCH part#1) can be prevented from using DM-RS (for example, DM-RS#3, DM-RS#4) corresponding to different TCI states for demodulation, and the reliability of the system is improved.
  • DM-RS for example, DM-RS#3, DM-RS#4
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives configuration information (second indication information), which indicates the repetition mechanism of the data signal.
  • the corresponding IE name is for example repetitionscheme.
  • the repetition mechanism of the data signal is indicated as PDSCH.
  • Frequency division multiplexing scheme B (fdmSchemeB).
  • the terminal device receives the scheduling instruction (first instruction information), and the scheduling instruction may be before the time slot n or the time slot n.
  • the scheduling indication is related to two or more TCI states.
  • the indicated codepoint corresponding to the TCI field in the indication information of the scheduling indication is associated with two or more TCI states.
  • the terminal device receives the data signal (PDSCH) in the indicated two PDSCH transmission opportunities in the time slot n according to the resource allocation indication in the indication information of the scheduling indication.
  • the PDSCH corresponding to the first transmission opportunity is PDSCH Rep#1, which corresponds to TRP#1, which is the first TCI state, TCI#1;
  • the PDSCH corresponding to the second transmission opportunity is PDSCH Rep#2, which corresponds to TRP #2, which is the second TCI state, TCI#2.
  • the PRB bundling indication corresponding to the PDSCH is "wideband", that is, PDSCH Rep#1 and PDSCH Rep#2 belong to the same PRG.
  • PDSCH Rep#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2; PDSCH Rep#2 includes two DM-RSs on two symbols, namely DM-RS#3 and DM-RS#4.
  • the scheduled PDSCH (PDSCH Rep#1 and PDSCH Rep#2) are associated with multiple DM-RSs, including DM-RS#1, DM-RS#2, DM-RS#3, and DM-RS#4.
  • DM-RS#1 due to PDSCH Rep#1DM-RS#1, DM-RS#2 is associated or assigned the same TCI state, or more specifically, DM-RS#1, DM-RS#2 and PDSCH Rep# 1 corresponds to the scheduling resource (resource E) in the same TCI state.
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#1 sent on the 6th symbol of slot n
  • the physical channel experienced by DM-RS#2 transmitted on the 10th symbol of time slot n that is to say, the PDSCH transmitted on the 6th symbol of time slot n can be based on DM-RS#1 sent on the symbol and DM-RS#2 sent on the 10th symbol of slot n are demodulated.
  • DM-RS#3, DM-RS#4, and PDSCH Rep#2 correspond to scheduling resources (resource F) in the same TCI state.
  • resource F resource F (corresponding to the same TCI state)
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#3 sent on the 6th symbol of slot n
  • the physical channel experienced by DM-RS#4 transmitted on the 10th symbol of time slot n that is to say, the PDSCH transmitted on the 6th symbol of time slot n can be based on DM-RS#3 sent on the symbol and DM-RS#4 sent on the 10th symbol of slot n are demodulated.
  • resource E or F can be in one PRG.
  • resource E or F can be further understood as PRG/PRBs corresponding to the same TCI state.
  • the data signal (for example, PDSCH part#1) can be prevented from using DM-RS (for example, DM-RS#3, DM-RS#4) corresponding to different TCI states for demodulation, and the reliability of the system is improved.
  • DM-RS for example, DM-RS#3, DM-RS#4
  • the TCI state is used to determine the relationship between the DM-RS and the data signal, which enables the corresponding data signal to be demodulated using the correct DM-RS, thereby ensuring the reliability of data transmission and improving Improve system performance.
  • the embodiment of the present application provides a signal sending method, which is described from the network side. This method is network-side processing corresponding to the method of the embodiment of the first aspect, and the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 5 is a schematic diagram of a signal sending method according to an embodiment of the present application. As shown in FIG. 5, the method includes:
  • a network device generates first indication information, a data signal, and a DM-RS associated with the data signal; wherein the first indication information indicates at least two transmission configuration indication (TCI) states;
  • TCI transmission configuration indication
  • the network device sends the first indication signal, the data signal, and the DM-RS associated with the data signal to a terminal device;
  • the data signal is related to the at least two TCI states, one symbol of the DM-RS is the same as the TCI state associated or assigned to one symbol of the data signal, and the one symbol of the data signal
  • the channel experienced (conveyed) on one antenna port can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • the method further includes:
  • the network device generates second indication information
  • the network device sends the second indication information to the terminal device, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: time division multiplexing mechanism , Frequency division multiplexing mechanism A, and frequency division multiplexing mechanism B.
  • FIG. 5 above only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution between operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 5 above.
  • the one symbol of the DM-RS and the one symbol of the data signal are on the same antenna port.
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same scheduling resource of the data signal.
  • the scheduled resources correspond to the same TCI state.
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same frequency domain resource.
  • the frequency domain resource is a precoding resource block group (PRG).
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same time slot.
  • the one symbol of the DM-RS and the one symbol of the data signal are within the same transmission/reception occasion
  • the transmission opportunity refers to the transmission opportunity corresponding to the data signal.
  • the first indication information is indicated by the DCI that schedules the above-mentioned data signal.
  • the network device uses the same channel to send the data signal and the DM-RS associated with the data signal, so that the terminal device demodulates the data signal according to the received DM-RS .
  • the processing on the terminal device side has been described in the embodiment of the first aspect, and will not be repeated here.
  • the network device transmits the above-mentioned data signal and the DM-RS associated with the data signal, reference may be made to related technologies, and the description is omitted here.
  • the TCI state is used to determine the relationship between the DM-RS and the data signal, which enables the corresponding data signal to be demodulated using the correct DM-RS, thereby ensuring the reliability of data transmission and improving Improve system performance.
  • FIG. 6 is a schematic diagram of a signal receiving method according to an embodiment of the present application. As shown in FIG. 6, the method includes:
  • the terminal device receives first indication information; where the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the terminal device receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal; wherein the precoding granularity of the data signal is wideband precoding granularity,
  • the allocated frequency domain resource of the data signal is divided into a corresponding number of frequency domain parts according to the number of TCI states indicated by the first indication information, and one symbol of the DM-RS is related to the data signal
  • One symbol of the corresponding to the same frequency domain part, and the channel that the one symbol of the data signal has experienced on one antenna port can be on the same antenna according to the one symbol of the DM-RS The channel experienced on the port is inferred.
  • the embodiment of the present application provides a PRB bundling method when the precoding granularity of the data signal is the broadband precoding granularity.
  • frequency domain resources are divided, and the terminal device can use the DM-RS corresponding to the same frequency domain part for PDSCH demodulation, thereby ensuring the correctness of PDSCH demodulation and improving system performance.
  • the frequency domain resources allocated to the data signal are divided into corresponding numbers of frequency domain parts according to the number of TCI states indicated by the first indication information.
  • the first indication information indicates two TCI states.
  • the frequency domain resources allocated to the data signal are divided into two frequency domain parts, and each frequency domain part corresponds to a TCI state; for another example, if the first indication information indicates three TCI states, the frequency domain to which the data signal is allocated
  • the resource is divided into three frequency domain parts, and each frequency domain part corresponds to a TCI state.
  • the aforementioned TCI state corresponds to the aforementioned frequency domain part one-to-one, that is, each TCI state corresponds to a frequency domain part, but the application is not limited to this.
  • one symbol of the DM-RS corresponds to the same frequency domain part as one symbol of the data signal.
  • PDSCH part#1 and DM-RS#1 and DM-RS#2 Correspond to the same frequency domain part, and PDSCH part#2 corresponds to the same frequency domain part as DM-RS#3 and DM-RS#4; taking Figure 3 as an example, PDSCH Rep#1 and DM-RS#1 and DM- RS#2 corresponds to the same frequency domain part, and PDSCH Rep#2 corresponds to the same frequency domain part as DM-RS#3 and DM-RS#4.
  • the channel that the one symbol of the data signal has experienced on one antenna port can be based on the channel that the one symbol of the DM-RS has experienced on the same antenna port It is inferred, that is, the received data signal on one antenna port is demodulated using the DM-RS on the same antenna port in the same frequency domain as the data signal.
  • the antenna port numbers of DM-RS#1, DM-RS#2, and PDSCH Rep#1 are all 1000, and DM-RS#1 and DM-RS#2 are used to demodulate PDSCH Rep#1.
  • the PDSCH Rep#1 on one symbol for example, the 3rd symbol in slot n
  • the DM-RS on one symbol for example, the 3rd symbol in slot n
  • #1 and DM-RS#2 on one symbol for example, the seventh symbol in slot n
  • the PDSCH Rep#1 on one symbol (for example, the 3rd symbol in slot n) can be based on the DM- on one symbol (for example, the 3rd symbol in slot n).
  • RS#1 and DM-RS#2 on one symbol (for example, the seventh symbol in slot n) are demodulated.
  • the antenna port numbers of DM-RS#3, DM-RS#4, and PDSCH Rep#2 are all 1000, and DM-RS#3 and DM-RS#4 can be used to demodulate PDSCH Rep# 2.
  • the PDSCH Rep#2 on one symbol for example, the 10th symbol in slot n
  • the DM-RS on one symbol for example, the 10th symbol in slot n
  • #3 and DM-RS #4 on one symbol for example, the 14th symbol in slot n
  • the PDSCH Rep#2 on one symbol (for example, the 10th symbol in slot n) can be based on the DM- on one symbol (for example, the 10th symbol in slot n).
  • RS#3 and DM-RS#4 on one symbol (for example, the 14th symbol in slot n) are demodulated.
  • the antenna port numbers of DM-RS#1, DM-RS#2, and PDSCH part#1 are all 1000, and DM-RS#1 and DM-RS#2 can be used to demodulate PDSCH part#1 .
  • the PDSCH part#1 on one symbol for example, the 6th symbol in slot n
  • the DM-RS on one symbol for example, the 6th symbol in slot n
  • #1 and DM-RS#2 on one symbol for example, the 10th symbol in slot n
  • the PDSCH part#1 on one symbol (for example, the 6th symbol in slot n) can be based on the DM- on one symbol (for example, the 6th symbol in slot n).
  • RS#1 and DM-RS#2 on one symbol (for example, the 10th symbol in slot n) are demodulated.
  • the antenna port numbers of DM-RS#3, DM-RS#4, and PDSCH part#2 are all 1000, and DM-RS#3 and DM-RS#4 can be used to demodulate PDSCH part# 2.
  • the PDSCH part#2 on one symbol for example, the 6th symbol in slot n
  • the DM-RS on one symbol for example, the 6th symbol in slot n
  • #3 and DM-RS #4 on one symbol for example, the 10th symbol in slot n
  • the PDSCH part#2 on one symbol (for example, the 6th symbol in slot n) can be based on the DM- on one symbol (for example, the 6th symbol in slot n).
  • RS#3 and DM-RS#4 on one symbol (for example, the 10th symbol in slot n) are demodulated.
  • the antenna port numbers of DM-RS#1, DM-RS#2, and PDSCH Rep#1 are all 1000, and DM-RS#1 and DM-RS#2 can be used to demodulate PDSCH Rep#1 .
  • the PDSCH Rep#1 on one symbol for example, the 6th symbol in slot n
  • the DM-RS on one symbol for example, the 6th symbol in slot n
  • #1 and DM-RS#2 on one symbol for example, the 10th symbol in slot n
  • the PDSCH Rep#1 on one symbol (for example, the 6th symbol in slot n) can be based on the DM- on one symbol (for example, the 6th symbol in slot n).
  • RS#1 and DM-RS#2 on one symbol (for example, the 10th symbol in slot n) are demodulated.
  • the antenna port numbers of DM-RS#3, DM-RS#4, and PDSCH Rep#2 are all 1000, and DM-RS#3 and DM-RS#4 can be used to demodulate PDSCH Rep# 2.
  • the PDSCH Rep#2 on one symbol for example, the 6th symbol in slot n
  • the DM-RS on one symbol for example, the 6th symbol in slot n
  • #3 and DM-RS #4 on one symbol for example, the 10th symbol in slot n
  • the PDSCH Rep#2 on one symbol (for example, the 6th symbol in slot n) can be based on the DM- on one symbol (for example, the 6th symbol in slot n).
  • RS#3 and DM-RS#4 on one symbol (for example, the 10th symbol in slot n) are demodulated.
  • the same frequency domain part in the frequency domain resources allocated for the data signal corresponds to the same precoding.
  • the frequency domain resources of PDSCH part#1 correspond to the same precoding
  • the frequency domain resources of PDSCH part#2 correspond to the same precoding
  • the frequency domain resources of PDSCH Rep#1 correspond to the same precoding
  • the frequency domain resources of PDSCH Rep#2 correspond to the same precoding.
  • the above-mentioned frequency domain part is a precoding resource block group (PRG), but the application is not limited thereto.
  • PRG precoding resource block group
  • the first indication information indicates two TCI states.
  • the first indication information indicates two TCI states, the frequency domain resource corresponding to the data signal is divided into two frequency domain parts, and one frequency domain part (such as the frequency domain resource of PDSCH part#1) is associated with one TCI status (TCI#1), another frequency domain part (such as the frequency domain resources of PDSCH part#2) is associated with a TCI status (TCI#2);
  • the first indication information indicates two TCIs State, the frequency domain resource corresponding to the data signal is divided into two frequency domain parts, one frequency domain part (such as the frequency domain resource of PDSCH Rep#1) is associated with one TCI state (TCI#1), and the other frequency domain part (such as The frequency domain resource of PDSCH Rep#2) is associated with a TCI state (TCI#2).
  • the above-mentioned first indication information is indicated by downlink control information (DCI) for scheduling the above-mentioned data signal.
  • the DCI may include a TCI field and an antenna port field.
  • the codepoint indicated by the TCI field corresponds to at least Two TCI states, the DM-RS antenna port indicated by the antenna port field is in a code division multiplexing (CDM, Code Division Multiplexing) group.
  • CDM Code Division Multiplexing
  • the first indication information may be indicated by the DCI in the PDCCH shown in FIG. 2 and FIG. 3.
  • the DCI is used to schedule the PDSCH, but the application is not limited to this.
  • the method further includes:
  • the terminal device receives second indication information, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: frequency division multiplexing mechanism A (as shown in Figure 2 As shown), and frequency division multiplexing mechanism B (as shown in Figure 3).
  • the above-mentioned second indication information is included in RRC signaling, and the corresponding information element (Information Element, IE) name is, for example, repetition scheme, but the present application is not limited to this.
  • the second indication information may indicate that the repetition mechanism of the data signal is the PDSCH frequency division multiplexing mechanism A, as shown in FIG. 2; it may also indicate that the repetition mechanism of the data signal is the PDSCH frequency division multiplexing mechanism B, as shown in FIG. 3. That is, the method in the embodiment of the present application is applicable to the frequency division multiplexing mechanism. This application is not limited to the timing and manner of sending the second instruction information.
  • the terminal device can use the DM-RS corresponding to the same frequency domain part for PDSCH demodulation, thereby ensuring the correctness of PDSCH demodulation and improving system performance.
  • FIG. 6 above only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution between operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 6 above.
  • PDSCH including PDSCH Rep#1 and PDSCH Rep#1, or PDSCH part#1 and PDSCH part#1
  • DM-RS#1, DM-RS#2, DM-RS#3 The antenna port of DM-RS#4 is set to 1000. This application is not limited to this, and their antenna port numbers can also be 1001, 1002 or others.
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives the configuration information (second indication information), the IE name corresponding to the configuration information is, for example, repetition scheme, and through the configuration information, the repetition mechanism of the data signal is configured as the PDSCH frequency division multiplexing mechanism A (fdmSchemeA ).
  • the terminal device receives the scheduling instruction (first instruction information), and the scheduling instruction may be before the time slot n or the time slot n.
  • the scheduling indication is related to two or more TCI states, that is, the scheduling indication indicates two or more TCI states.
  • the indicated codepoint corresponding to the TCI field in the indication information of the scheduling indication is associated with two or more TCI states.
  • the terminal device receives the data signal (PDSCH) in a PDSCH transmission opportunity in the time slot n according to the resource allocation instruction in the instruction information of the scheduling instruction.
  • the first part of the PDSCH corresponding to this transmission opportunity is PDSCH part#1, which corresponds to TRP#1, which is the first TCI state, TCI#1;
  • the second part of the PDSCH corresponding to this transmission opportunity is PDSCH part#2 , which corresponds to TRP#2, which is the second TCI state, TCI#2.
  • the PRB bundling indication corresponding to the PDSCH is "wideband".
  • the terminal device considers that PDSCH part#1 and PDSCH part#2 belong to different PRGs.
  • the frequency domain part occupied by PDSCH part#1 belongs to the first PRG
  • the frequency domain part occupied by PDSCH part#2 belongs to the second PRG.
  • the frequency domain resources occupied by the above-mentioned PDSCH are N PRB (physical resource block)
  • the first indication information indicates two TCI states
  • the PDSCH occupies
  • the frequency domain resources are divided into two parts, namely, two PRGs. According to the ascending order of the PRB index (index), the first PRG occupies the first of the above N PRBs.
  • the second PRG occupies the remaining PRB; similarly, if the first indication information indicates three TCI states, the frequency domain resources occupied by the PDSCH are divided into three parts, namely three PRGs, each PRG corresponds to a different TCI state, according to the PRB index In ascending order, the first PRG occupies the first of the above N PRBs PRB, the second PRG occupies the next PRB, the third PRG occupies the remaining PRB. If the first indication information indicates more TCI states, the frequency domain resources occupied by the PDSCH can be divided into more parts, and the TCI state corresponding to each part is different, and the method is similar.
  • the above division method and location of the frequency domain resources occupied by the PDSCH are just examples, and the present application is not limited to this, and other strategies may be combined to divide the frequency domain resources occupied by the PDSCH.
  • the scheduled PDSCH (PDSCH part#1 and PDSCH part#2) are associated with multiple DM-RSs, including DM-RS#1, DM-RS#2, DM-RS#3, DM -RS#4.
  • PDSCH part#1 includes two DM-RSs on two symbols, DM-RS#1 and DM-RS#2;
  • PDSCH part#2 includes two DM-RSs on two symbols, DM-RS RS#3 and DM-RS#4.
  • PDSCH part#1 is associated with DM-RS#1, DM-RS#2 is associated or assigned the same PRG. Therefore, the channel experienced by a PDSCH part#1 can be derived from the channel experienced by the symbols of DM-RS#1 and DM-RS#2. Similarly, the channel experienced by a PDSCH part#2 can be derived from the channels experienced by DM-RS#3 and DM-RS#4.
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#1 sent on the 6th symbol of slot n and the The physical channel experienced by DM-RS#2 transmitted on the 10th symbol is derived, that is, the PDSCH transmitted on the 6th symbol of slot n can be based on the data transmitted on the 6th symbol of slot n DM-RS#1 and DM-RS#2 transmitted on the 10th symbol of slot n are demodulated.
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#3 sent on the 6th symbol of slot n and the first symbol of slot n.
  • the physical channel experienced by DM-RS#4 transmitted on 10 symbols is derived. That is to say, the PDSCH transmitted on the 6th symbol of slot n can be based on the DM-RS transmitted on the 6th symbol of slot n. -RS#3 and demodulation of DM-RS#4 sent on the 10th symbol of slot n.
  • the data signal (for example, PDSCH part#1) can be prevented from using DM-RS (for example, DM-RS#3, DM-RS#4) corresponding to different PRGs for demodulation, and the reliability of the system is improved.
  • DM-RS for example, DM-RS#3, DM-RS#4
  • the network device is associated with two TRPs, and the two TRPs respectively correspond to different TCI states, which can also be understood as corresponding to different spatial relationships.
  • the terminal device receives the configuration information (second indication information).
  • the IE name corresponding to the configuration information is, for example, repetitionscheme.
  • the repetition mechanism of the data signal is indicated as PDSCH frequency division multiplexing mechanism B (fdmSchemeB) .
  • the terminal device receives the scheduling instruction (first instruction information), and the scheduling instruction may be before the time slot n or the time slot n.
  • the scheduling indication is related to two or more TCI states, that is, the scheduling indication indicates two or more TCI states.
  • the indicated codepoint corresponding to the TCI field in the indication information of the scheduling indication is associated with two or more TCI states.
  • the terminal device receives the data signal (PDSCH) in the indicated two PDSCH transmission opportunities in the time slot n according to the resource allocation indication in the indication information of the scheduling indication.
  • the PDSCH corresponding to the first transmission opportunity is PDSCH Rep#1, which corresponds to TRP#1, which is the first TCI state, TCI#1;
  • the PDSCH corresponding to the second transmission opportunity is PDSCH Rep#2, which corresponds to TRP #2, which is the second TCI state, TCI#2.
  • the PRB bundling indication corresponding to the PDSCH is "wideband".
  • the terminal device considers that PDSCH Rep#1 and PDSCH Rep#2 belong to different PRGs. Among them, the frequency domain part occupied by PDSCH Rep#1 belongs to the first PRG; the frequency domain part occupied by PDSCH Rep#2 belongs to the second PRG.
  • the frequency domain resources occupied by the above-mentioned PDSCH are N PRB (physical resource block)
  • the first indication information indicates two TCI states
  • the PDSCH occupied The frequency domain resources are divided into two parts, for example, two PRGs.
  • the first PRG occupies PRB
  • the second PRG occupies the remaining PRB
  • the frequency domain resources occupied by the PDSCH are divided into three parts, for example, three PRGs, each PRG corresponds to a different TCI state, according to the PRB index
  • the second PRG occupies the next PRB
  • the third PRG occupies the remaining PRB. If the frequency domain resources occupied by the PDSCH are divided into more parts, the TCI state corresponding to each part is different, and the method is similar.
  • the above division method and location of the frequency domain resources occupied by the PDSCH are just examples, and the present application is not limited to this, and other strategies may be combined to divide the frequency domain resources occupied by the PDSCH.
  • the scheduled PDSCH (PDSCH Rep#1 and PDSCH Rep#2) are associated with multiple DM-RSs, including DM-RS#1, DM-RS#2, DM-RS#3, DM -RS#4.
  • PDSCH Rep#1 includes two DM-RSs on two symbols, namely DM-RS#1 and DM-RS#2;
  • PDSCH Rep#2 includes two DM-RSs on two symbols, namely DM-RS#3 and DM-RS#4.
  • PDSCH Rep#1 is associated with DM-RS#1, DM-RS#2 is associated or assigned the same PRG. Therefore, the channel experienced by PDSCH Rep#1 can be derived from the channel experienced by DM-RS#1 and DM-RS#2. Similarly, the channel experienced by PDSCH Rep#2 can be derived from the channel experienced by DM-RS#3 and DM-RS#4.
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#1 sent on the 6th symbol of slot n and the The physical channel experienced by DM-RS#2 transmitted on the 10th symbol is derived, that is, the PDSCH transmitted on the 6th symbol of slot n can be based on the data transmitted on the 6th symbol of slot n DM-RS#1 and DM-RS#2 transmitted on the 10th symbol of slot n are demodulated.
  • the physical channel experienced by the PDSCH on the 6th symbol of slot n can be based on the DM-RS#3 sent on the 6th symbol of slot n and in slot n
  • the physical channel experienced by DM-RS#4 transmitted on the 10th symbol of the DM-RS#3 and DM-RS#4 sent on the 10th symbol of slot n are demodulated.
  • the data signal (for example, PDSCH Rep#1) can be prevented from using DM-RS (for example, DM-RS#3, DM-RS#4) corresponding to different PRGs for demodulation, and the reliability of the system is improved.
  • DM-RS for example, DM-RS#3, DM-RS#4
  • the terminal device in the case that the data signal corresponds to the broadband precoding granularity, can use the DM-RS corresponding to the same frequency domain part for PDSCH demodulation, thereby ensuring the correct PDSCH demodulation And improve system performance.
  • the embodiment of the present application provides a signal sending method, which is described from the network side. This method is network-side processing corresponding to the method of the embodiment of the third aspect, and the same content as the embodiment of the third aspect will not be repeated.
  • FIG. 7 is a schematic diagram of a signal sending method according to an embodiment of the present application. As shown in FIG. 7, the method includes:
  • a network device generates first indication information, a data signal, and a DM-RS associated with the data signal, where the first indication information indicates at least two transmission configuration indication (TCI) states;
  • TCI transmission configuration indication
  • the network device sends the first indication information, the data signal, and the DM-RS associated with the data signal to a terminal device; wherein the precoding granularity of the data signal is broadband precoding granularity
  • the frequency domain resources allocated to the data signal are divided into corresponding numbers of frequency domain parts according to the number of TCI states indicated by the first indication information, and a symbol of the DM-RS is One symbol of the data signal corresponds to the same frequency domain part, and the channel that the one symbol of the data signal has experienced (conveyed) on one antenna port can be based on the one symbol of the DM-RS The channel experienced on the same antenna port is inferred.
  • the method further includes:
  • the network device generates second indication information
  • the network device sends the second indication information to the terminal device, where the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: frequency division multiplexing Mechanism A, and frequency division multiplexing mechanism B.
  • FIG. 7 above only schematically illustrates an embodiment of the present application, but the present application is not limited thereto.
  • the order of execution between operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 7 above.
  • the same frequency domain part of the frequency domain resources allocated for the data signal corresponds to the same precoding (precoding).
  • the frequency domain part is a precoding resource block group (PRG).
  • PRG precoding resource block group
  • the first indication information indicates two TCI states.
  • the first indication information is indicated by the DCI that schedules the data signal, and the DCI includes a TCI field and an antenna port field, and the TCI field indicates The codepoint corresponds to at least two TCI states, and the DM-RS antenna port indicated by the antenna port field is in a code division multiplexing group.
  • the network device uses the same channel to send the data signal and the DM-RS associated with the data signal, so that the terminal device demodulates the data signal according to the received DM-RS .
  • the processing on the terminal device side has been explained in the embodiment of the third aspect, and will not be repeated here.
  • the network device transmits the above-mentioned data signal and the DM-RS associated with the data signal, reference may be made to related technologies, and the description is omitted here.
  • the terminal device in the case that the data signal corresponds to the broadband precoding granularity, can use the DM-RS corresponding to the same frequency domain part for PDSCH demodulation, thereby ensuring the correct PDSCH demodulation And improve system performance.
  • the embodiment of the fifth aspect of the present application provides a signal receiving apparatus.
  • the apparatus may be a terminal device, for example, or may be some or some components or components configured in the terminal device.
  • FIG. 8 is a schematic diagram of the signal receiving device of the embodiment of the present application. Since the principle of the device to solve the problem is similar to the method of the embodiment of the first aspect, its specific implementation can refer to the implementation of the method of the embodiment of the first aspect , The same content will not be repeated.
  • the signal receiving device 800 of the embodiment of the present application includes: a first receiving unit 801 and a second receiving unit 802.
  • the first receiving unit 801 receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; the second receiving unit 802 receives the data signal and communicates with the A demodulation reference signal (DM-RS) associated with a data signal; wherein the data signal is related to the at least two transmission configuration indication (TCI) states, and one symbol of the DM-RS is related to one of the data signal
  • TCI status associated or allocated by the symbols is the same, and the channel that the one symbol of the data signal has experienced (conveyed) on one antenna port can be on the same antenna port according to the one symbol of the DM-RS The experienced channel is (is inferred).
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same scheduling resource corresponding to the data signal.
  • the scheduled resources correspond to the same TCI state.
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same frequency domain resource.
  • the frequency domain resource is a precoding resource block group (PRG).
  • PRG precoding resource block group
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same time slot.
  • the one symbol of the DM-RS and the one symbol of the data signal are within the same transmission/reception occasion, and the transmission opportunity refers to the location of the data signal. Corresponding transmission opportunities.
  • the first indication information is indicated by downlink control information (DCI) for scheduling the data signal.
  • DCI downlink control information
  • the signal receiving apparatus 800 of the embodiment of the present application further includes:
  • the third receiving unit 803 receives the second indication information, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: time division multiplexing mechanism, frequency division multiplexing mechanism A, and frequency division multiplexing mechanism B.
  • FIG. 9 is another schematic diagram of the signal receiving device of the embodiment of the present application. Since the principle of the device to solve the problem is similar to the method of the embodiment of the third aspect, the specific implementation can refer to the method of the embodiment of the third aspect Implementation, the same content will not be repeated.
  • the signal receiving device 900 of the embodiment of the present application includes: a first receiving unit 901 and a second receiving unit 902.
  • the first receiving unit 901 receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; the second receiving unit 902 receives the data signal and communicates with the A demodulation reference signal (DM-RS) associated with a data signal; wherein the precoding granularity of the data signal is wideband precoding granularity, and the data signal is allocated frequency domain resources According to the number of TCI states indicated by the first indication information, it is divided into a corresponding number of frequency domain parts, and one symbol of the DM-RS corresponds to the same frequency domain part as one symbol of the data signal.
  • the channel that the one symbol of the data signal has experienced on one antenna port can be obtained (is inferred) according to the channel that the one symbol of the DM-RS has experienced on the same antenna port.
  • the same frequency domain part in the frequency domain resources allocated for the data signal corresponds to the same precoding.
  • the frequency domain part is a precoding resource block group (PRG).
  • PRG precoding resource block group
  • the first indication information indicates two TCI states.
  • the first indication information is indicated by the DCI that schedules the data signal
  • the DCI includes a TCI domain and an antenna port domain
  • the codepoint indicated by the TCI domain corresponds to at least two TCIs.
  • the DM-RS antenna port indicated by the antenna port field is in a code division multiplexing (CDM, Code Division Multiplexing) group.
  • the signal receiving apparatus 900 of the embodiment of the present application further includes:
  • the third receiving unit 903 receives the second indication information, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: frequency division multiplexing mechanism A, and frequency division Reuse mechanism B.
  • the signal receiving device 800/900 of the embodiment of the present application may further include other components or modules, and for the specific content of these components or modules, reference may be made to related technologies.
  • FIGS. 8 and 9 only exemplarily show the connection relationship or signal direction between the various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • the reliability of data transmission is ensured, and system performance is improved.
  • the embodiment of the present application provides a signal sending device.
  • the device may be, for example, a network device, or may be some or some components or components configured in the network device.
  • FIG. 10 is a schematic diagram of the signal sending device of this embodiment. Since the principle of the device to solve the problem is similar to the method of the embodiment of the second aspect, its specific implementation can refer to the implementation of the method of the embodiment of the second aspect. The same content will not be repeated.
  • the signal sending device 1000 of the embodiment of the present application includes: a generating unit 1001 and a sending unit 1002.
  • the generating unit 1001 generates first indication information, a data signal, and a DM-RS associated with the data signal; wherein the first indication information indicates at least two transmission configuration indication (TCI) states
  • the sending unit 1002 sends the first indication information, the data signal, and the DM-RS associated with the data signal to the terminal device; wherein, the data signal is related to the at least two TCI states, the One symbol of the DM-RS is the same as the TCI state associated or allocated to one symbol of the data signal, and the channel that the one symbol of the data signal has experienced (conveyed) on one antenna port can be based on the DM -The channel experienced by the one symbol of the RS on the same antenna port is inferred.
  • TCI transmission configuration indication
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same scheduling resource corresponding to the data signal.
  • the scheduled resources correspond to the same TCI state.
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same frequency domain resource.
  • the frequency domain resource is a precoding resource block group (PRG).
  • PRG precoding resource block group
  • the one symbol of the DM-RS and the one symbol of the data signal are in the same time slot.
  • the one symbol of the DM-RS and the one symbol of the data signal are within the same transmission/reception occasion, and the transmission opportunity refers to the location of the data signal. Corresponding transmission opportunities.
  • the first indication information is indicated by the DCI that schedules the data signal.
  • the generating unit 1001 also generates second indication information; the sending unit 1002 also sends the second indication information to the terminal device, and the second indication information includes configuration information.
  • the configuration information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: a time division multiplexing mechanism, a frequency division multiplexing mechanism A, and a frequency division multiplexing mechanism B.
  • FIG. 11 is another schematic diagram of the signal sending device of this embodiment. Since the principle of the device to solve the problem is similar to the method of the embodiment of the fourth aspect, its specific implementation can refer to the implementation of the method of the embodiment of the fourth aspect. , The same content will not be repeated.
  • the signal sending device 1100 of the embodiment of the present application includes: a generating unit 1101 and a sending unit 1102.
  • the generating unit 1101 generates first indication information, a data signal, and a DM-RS associated with the data signal, wherein the first indication information indicates at least two transmission configuration indication (TCI) states
  • the sending unit 1102 sends the first indication information, the data signal, and the DM-RS associated with the data signal to the terminal device; wherein the precoding granularity of the data signal is the broadband precoding granularity ( wideband precoding granularity), the frequency domain resources allocated to the data signal are divided into corresponding number of frequency domain parts according to the number of TCI states indicated by the first indication information, and one symbol of the DM-RS is related to the One symbol of the data signal corresponds to the same frequency domain part, and the channel that the one symbol of the data signal has experienced on one antenna port can be in the same frequency domain according to the one symbol of the DM-RS. The channel experienced on the antenna port is inferred.
  • the same frequency domain part in the frequency domain resources allocated for the data signal corresponds to the same precoding.
  • the frequency domain part is a precoding resource block group (PRG).
  • PRG precoding resource block group
  • the first indication information indicates two TCI states.
  • the first indication information is indicated by the DCI that schedules the data signal
  • the DCI includes a TCI domain and an antenna port domain
  • the codepoint indicated by the TCI domain corresponds to at least two TCIs.
  • Status, the DM-RS antenna port indicated by the antenna port field is in a code division multiplexing group.
  • the generating unit 1101 also generates second indication information; the sending unit 1102 also sends the second indication information to the terminal device, the second indication information includes configuration information, and the configuration information indicates data
  • the repetition mechanism of the signal, the repetition mechanism of the data signal is one of the following: frequency division multiplexing mechanism A and frequency division multiplexing mechanism B.
  • the signal sending device 1000/1100 in the embodiment of the present application may further include other components or modules, and for the specific content of these components or modules, reference may be made to related technologies.
  • FIG. 10 and FIG. 11 only exemplarily show the connection relationship or signal direction between the various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • the reliability of data transmission is ensured, and system performance is improved.
  • FIG. 12 is a schematic diagram of the communication system 1200.
  • the communication system 1200 includes a network device 1201 and a terminal device 1202.
  • FIG. 12 uses only one terminal.
  • the device and a network device are taken as an example for description, but the embodiment of the present application is not limited to this.
  • the network device 1201 and the terminal device 1202 can perform existing service or service transmission that can be implemented in the future.
  • these services may include, but are not limited to: enhanced mobile broadband (eMBB), large-scale machine type communication (mMTC), high-reliability and low-latency communication (URLLC), and Internet of Vehicles (V2X) communication, and so on.
  • eMBB enhanced mobile broadband
  • mMTC large-scale machine type communication
  • URLLC high-reliability and low-latency communication
  • V2X Internet of Vehicles
  • the network device 1201 generates first indication information, a data signal, and a DM-RS associated with the data signal, and sends the first indication information, the data signal, and the terminal device 1202 to the terminal device 1202.
  • the first indication information indicates at least two transmission configuration indication (TCI) states.
  • the data signal is related to the at least two TCI states, one symbol of the DM-RS and one symbol of the data signal are associated or assigned the same TCI state, and the data signal
  • the channel experienced by the one symbol on one antenna port can be derived from the channel experienced by the one symbol of the DM-RS on the same antenna port (is inferred).
  • the network device 1201 generates first indication information, a data signal, and a DM-RS associated with the data signal, and sends the first indication information, the data signal, and the terminal device 1202 to the terminal device 1202.
  • the first indication information indicates at least two transmission configuration indication (TCI) states; the network device 1201.
  • TCI transmission configuration indication
  • the precoding granularity of the data signal is wideband precoding granularity, and the frequency domain resources to which the data signal is allocated are determined according to the TCI status indicated by the first indication information.
  • the number is divided into a corresponding number of frequency domain parts, one symbol of the DM-RS corresponds to the same frequency domain part as one symbol of the data signal, and the one symbol of the data signal is on one antenna port
  • the channel experienced (isconveyed) can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • the embodiment of the present application also provides a terminal device.
  • the terminal device may be, for example, a UE, but the present application is not limited to this, and may also be other devices.
  • FIG. 13 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1300 may include a processor 1301 and a memory 1302; the memory 1302 stores data and programs, and is coupled to the processor 1301. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to implement telecommunication functions or other functions.
  • the processor 1301 may be configured to execute a program to implement the signal receiving method as described in the embodiment of the first aspect or the third aspect.
  • the terminal device 1300 may further include: a communication module 1303, an input unit 1304, a display 1305, and a power supply 1306.
  • the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the terminal device 1300 does not necessarily include all the components shown in FIG. 13, and the above-mentioned components are not necessary; in addition, the terminal device 1300 may also include components not shown in FIG. There is technology.
  • the embodiment of the present application also provides a network device.
  • the network device may be, for example, a base station (gNB), but the present application is not limited to this, and may also be other network devices.
  • gNB base station
  • FIG. 14 is a schematic diagram of the structure of a network device according to an embodiment of the present application.
  • the network device 1400 may include: a processor (such as a central processing unit CPU) 1401 and a memory 1402; the memory 1402 is coupled to the processor 1401.
  • the memory 1402 can store various data; in addition, it also stores information processing programs, which are executed under the control of the central processing unit 1401.
  • the processor 1401 may be configured to execute a program to implement the signal sending method according to the embodiment of the second aspect or the fourth aspect.
  • the network device 1400 may further include: a transceiver 1403, an antenna 1404, etc.; wherein the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the network device 1400 does not necessarily include all the components shown in FIG. 14; in addition, the network device 1400 may also include components not shown in FIG. 14, and the prior art can be referred to.
  • the embodiments of the present application also provide a computer-readable program, wherein when the program is executed in a terminal device, the program causes the computer to execute the method described in the embodiment of the first aspect or the third aspect in the terminal device. Signal receiving method.
  • An embodiment of the present application also provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the signal receiving method described in the embodiment of the first aspect or the third aspect in a terminal device.
  • the embodiments of the present application also provide a computer-readable program, wherein when the program is executed in a network device, the program causes the computer to execute the method described in the embodiment of the second aspect or the fourth aspect in the network device. Signaling method.
  • An embodiment of the present application also provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the signal sending method described in the embodiment of the second invention or the fourth aspect in a network device.
  • the above devices and methods of this application can be implemented by hardware, or can be implemented by hardware combined with software.
  • This application relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, etc.
  • This application also relates to storage media used to store the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.
  • the method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in the figure may correspond to each software module of the computer program flow or each hardware module.
  • These software modules can respectively correspond to the steps shown in the figure.
  • These hardware modules can be implemented by solidifying these software modules by using a field programmable gate array (FPGA), for example.
  • FPGA field programmable gate array
  • the software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings can be implemented as general-purpose processors, digital signal processors (DSPs) for performing the functions described in this application. ), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any appropriate combination thereof.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, and multiple micro-processing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a signal receiving method wherein the method includes:
  • the terminal device receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the terminal device receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal;
  • DM-RS demodulation reference signal
  • the data signal is related to the at least two transmission configuration indication (TCI) states
  • one symbol of the DM-RS is the same as the TCI state associated or allocated with one symbol of the data signal
  • the data signal The channel that the one symbol of the DM-RS has experienced on one antenna port can be obtained (is inferred) according to the channel that the one symbol of the DM-RS has experienced on the same antenna port.
  • TCI transmission configuration indication
  • the terminal device receives second indication information, where the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: a time division multiplexing mechanism, a frequency division multiplexing mechanism A, and Frequency division multiplexing mechanism B.
  • a signal transmission method wherein the method includes:
  • the network device generates first indication information, a data signal, and a DM-RS associated with the data signal; wherein the first indication information indicates at least two transmission configuration indication (TCI) states;
  • TCI transmission configuration indication
  • the data signal is related to the at least two TCI states, one symbol of the DM-RS is the same as the TCI state associated or assigned to one symbol of the data signal, and the one symbol of the data signal
  • the channel experienced (conveyed) on one antenna port can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • the network device generates second indication information
  • the network device sends the second indication information to the terminal device, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: time division multiplexing mechanism, frequency Division multiplexing mechanism A, and frequency division multiplexing mechanism B.
  • a signal receiving method wherein the method includes:
  • the terminal device receives first indication information; wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the terminal device receives a data signal and a demodulation reference signal (DM-RS) associated with the data signal;
  • DM-RS demodulation reference signal
  • the precoding granularity of the data signal is wideband precoding granularity, and the allocated frequency domain resources of the data signal are based on the number of TCI states indicated by the first indication information. Divided into a corresponding number of frequency domain parts, one symbol of the DM-RS corresponds to the same frequency domain part as one symbol of the data signal, and the one symbol of the data signal is located on one antenna port.
  • the channel that is experienced (is conveyed) can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • the first indication information is indicated by a DCI that schedules the data signal
  • the DCI includes a TCI domain and an antenna port domain
  • the code point indicated by the TCI domain The codepoint corresponds to at least two TCI states
  • the DM-RS antenna port indicated by the antenna port field is in a code division multiplexing (CDM, Code Division Multiplexing) group.
  • the terminal device receives second indication information, where the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: frequency division multiplexing mechanism A, and frequency division multiplexing mechanism B.
  • a signal transmission method wherein the method includes:
  • the network device generates first indication information, a data signal, and a DM-RS associated with the data signal, wherein the first indication information indicates at least two transmission configuration indication (TCI) states; and
  • the precoding granularity of the data signal is wideband precoding granularity, and the frequency domain resources allocated to the data signal are divided into corresponding ones according to the number of TCI states indicated by the first indication information
  • the number of frequency domain parts, one symbol of the DM-RS and one symbol of the data signal correspond to the same frequency domain part, and the one symbol of the data signal is experienced on one antenna port (is
  • the conveyed channel can be derived (is inferred) according to the channel experienced by the one symbol of the DM-RS on the same antenna port.
  • the first indication information is indicated by a DCI that schedules the data signal
  • the DCI includes a TCI domain and an antenna port domain
  • the code point indicated by the TCI domain ( codepoint) corresponds to at least two TCI states
  • the DM-RS antenna port indicated by the antenna port field is in a code division multiplexing group.
  • the network device generates second indication information
  • the network device sends the second indication information to the terminal device, the second indication information indicates the repetition mechanism of the data signal, and the repetition mechanism of the data signal is one of the following: frequency division multiplexing mechanism A , And frequency division multiplexing mechanism B.
  • a terminal device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement any one of appendix 1 to 9, 19 to 25 Methods.
  • a network device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement any one of appendix 10 to 18, 26 to 32 Methods.
  • a communication system including terminal equipment and network equipment, wherein:
  • the terminal device is configured to execute the method described in any one of Supplements 1 to 9, and the network device is configured to execute the method described in any one of Supplements 10 to 19; or
  • the terminal device is configured to execute the method described in any one of Supplements 19 to 25, and the network device is configured to execute the method described in any one of Supplements 26 to 32.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de l'invention concernent un procédé et un appareil de réception de signal, ainsi qu'un système de communication. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit des premières informations d'indication, les premières informations d'indication indiquant au moins deux états d'indication de configuration de transmission (TCI) ; et le dispositif terminal reçoit un signal de données et un signal de référence de démodulation (DM-RS) associé au signal de données ; le signal de données est associé aux au moins deux états TCI, un symbole du DM-RS est associé à un symbole du signal de données ou les états TCI distribués sont identiques, et un canal par lequel passe le symbole du signal de données sur un port d'antenne peut être obtenu en fonction d'un canal par lequel passe le symbole du DM-RS sur le même port d'antenne.
PCT/CN2020/090375 2020-05-14 2020-05-14 Procédé et appareil de réception de signal, et système WO2021226970A1 (fr)

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WO2020089865A1 (fr) * 2018-11-02 2020-05-07 Telefonaktiebolaget Lm Ericsson (Publ) Systèmes et procédés de signalisation de diversité pdsch
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US20190297603A1 (en) * 2018-03-23 2019-09-26 Samsung Electronics Co., Ltd. Method and apparatus for beam management for multi-stream transmission
US20200112411A1 (en) * 2018-10-03 2020-04-09 Qualcomm Incorporated Multi-transmit receive point demodulation reference signal port identification
WO2020089865A1 (fr) * 2018-11-02 2020-05-07 Telefonaktiebolaget Lm Ericsson (Publ) Systèmes et procédés de signalisation de diversité pdsch
US20200145159A1 (en) * 2018-11-02 2020-05-07 FG Innovation Company Limited Method and apparatus for multiple transmit/receive point (trp) operations

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