[go: up one dir, main page]

WO2025130840A1 - Procédé de transmission de signal de référence de liaison descendante, terminal et dispositif côté réseau - Google Patents

Procédé de transmission de signal de référence de liaison descendante, terminal et dispositif côté réseau Download PDF

Info

Publication number
WO2025130840A1
WO2025130840A1 PCT/CN2024/139798 CN2024139798W WO2025130840A1 WO 2025130840 A1 WO2025130840 A1 WO 2025130840A1 CN 2024139798 W CN2024139798 W CN 2024139798W WO 2025130840 A1 WO2025130840 A1 WO 2025130840A1
Authority
WO
WIPO (PCT)
Prior art keywords
reference signal
downlink reference
same
signal resource
resources
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/139798
Other languages
English (en)
Chinese (zh)
Inventor
司晔
郑凯立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vivo Mobile Communication Co Ltd
Original Assignee
Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Publication of WO2025130840A1 publication Critical patent/WO2025130840A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present application belongs to the field of wireless communication technology, and specifically relates to a downlink reference signal transmission method, a terminal, and a network side device.
  • UE User Equipment
  • CSI Channel State Information
  • the embodiments of the present application provide a downlink reference signal transmission method, a terminal, and a network-side device, which can solve the problem of how the terminal processes a downlink reference signal with a large bandwidth.
  • the terminal receives a downlink reference signal sent by a network side device in a frequency hopping manner, where different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • the terminal jointly processes the downlink reference signals on the downlink reference signal resources corresponding to different hops to obtain channel state information CSI;
  • the terminal reports the CSI to the network side device.
  • a downlink reference signal transmission method which is performed by a network side device, and the method includes:
  • the network side device sends a downlink reference signal to the terminal in a frequency hopping manner, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • the network side device receives channel state information CSI reported by the terminal, where the CSI is obtained by the terminal performing joint processing on the downlink reference signals on downlink reference signal resources corresponding to different hops.
  • a downlink reference signal transmission device including:
  • a first receiving module is used to receive a downlink reference signal sent by a network side device in a frequency hopping manner, where different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • a processing module configured to jointly process the downlink reference signals on the downlink reference signal resources corresponding to different hops to obtain channel state information CSI;
  • a reporting module is used to report the CSI to the network side device.
  • a downlink reference signal transmission device including:
  • a sending module used to send a downlink reference signal to a terminal in a frequency hopping manner, where different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • the second receiving module is used to receive channel state information CSI reported by the terminal, where the CSI is obtained by the terminal performing joint processing on the downlink reference signals on the downlink reference signal resources corresponding to different hops.
  • a terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.
  • a terminal including a processor and a communication interface, wherein:
  • the communication interface is used to receive a downlink reference signal sent by a network side device in a frequency hopping manner, where different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • the processor is configured to jointly process the downlink reference signals on the downlink reference signal resources corresponding to different hops to obtain channel state information CSI;
  • the communication interface is also used to report the CSI to the network side device.
  • a network side device which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.
  • a downlink reference signal sent by a network side device through a frequency hopping manner is received by a terminal, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources.
  • the terminal jointly processes the downlink reference signals on the downlink reference signal resources corresponding to different hops, obtains CSI and reports it, so that the terminal can process a large bandwidth downlink reference signal, and the channel state information reporting overhead is small.
  • FIG2 is a schematic diagram of a flow chart of a method for transmitting a downlink reference signal according to an embodiment of the present application
  • FIG3 is a schematic diagram of different resources corresponding to different hops in a CSI-RS resource set provided in an embodiment of the present application
  • FIG4 is a schematic diagram of different CSI-RS resource sets corresponding to different hops provided in an embodiment of the present application.
  • FIG6 is a third flow chart of a method for transmitting a downlink reference signal according to an embodiment of the present application.
  • FIG7 is a schematic diagram of a structure of a downlink reference signal transmission device according to an embodiment of the present application.
  • FIG8 is a second schematic diagram of the structure of the downlink reference signal transmission device provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application.
  • first, second, etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by “first” and “second” are generally of one type, and the number of objects is not limited, for example, the first object can be one or more.
  • “or” in the present application represents at least one of the connected objects.
  • “A or B” covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B.
  • the character "/" generally indicates that the objects associated with each other are in an "or” relationship.
  • indication in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication).
  • a direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication;
  • an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • 6G 6th Generation
  • FIG1 shows a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), a flight vehicle (flight vehicle), a vehicle user equipment (VUE), a shipborne equipment, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC
  • an implementation scheme for mapping different hops of a downlink reference signal to different downlink reference signal resources may include at least one of the following:
  • the different downlink reference signal resources are respectively configured with starting resource blocks (RB) and/or bandwidth.
  • multiple CSI-RS resources are respectively configured with starting RBs and/or bandwidths.
  • multiple CSI-RS resources are configured with the same bandwidth.
  • the overlapped bandwidth between adjacent CSI-RS resources in the frequency domain and/or time domain is equal.
  • the number of ports of the different downlink reference signal resources is the same, and the ports with the same port index of the different downlink reference signal resources are the same port.
  • multiple CSI-RS resources have the same number of ports, and ports with the same port index on different CSI-RS resources are the same port.
  • CDM groups with the same CDM group index on different CSI-RS resources have the same code division multiplexing (CDM) type and the same CDM group size, and belong to the same CDM group.
  • the power control offsets of multiple CSI-RS resources are the same.
  • the transmission powers of different downlink reference signal resources are the same.
  • the QCL of multiple CSI-RS resources is the same.
  • multiple CSI-RS resources are sent from the same beam or spatial filter; or, multiple CSI-RS resources all use the first CSI-RS resource as the QCL source reference signal (QCL source RS).
  • QCL source RS QCL source reference signal
  • the frequency domain allocation parameters within the RB of multiple CSI-RS resources are the same.
  • the network configures ‘repetition on’, indicating that different downlink reference signal resources are sent from the same beam.
  • multiple downlink reference signal resources associated with the same hop satisfy at least one of the following:
  • the CSI-RS resource (or CSI-RS resource ID) having the first association relationship is configured to be divided into a group, which is divided into multiple groups in total, each group includes X1 CSI-RS resources, and X1 is a positive integer.
  • the first association relationship satisfies at least one of the following:
  • the at least one first downlink reference signal resource may be used for downlink reference signal resource joint processing to obtain CSI.
  • the at least one first downlink reference signal resource has the same number of ports, and ports with the same port index of different first downlink reference signal resources are the same port.
  • the QCL of the at least one first downlink reference signal resource is the same.
  • the power control offset of the at least one first downlink reference signal resource is the same.
  • the frequency domain density of the at least one first downlink reference signal resource is the same.
  • the scrambling code ID of the at least one first downlink reference signal resource is the same.
  • the network configures ‘repetition on/off’, and repetition on/off is applied to multiple downlink reference signal resources with the same hop ID, indicating that the different downlink reference signal resources are sent from the same beam, or, there is an assumption that the different downlink reference signal resources are sent without the same beam.
  • the network configures ‘trsinfo’, which is applied to multiple downlink reference signal resources with the same hop ID, indicating that the multiple downlink reference signal resources are used as TRS functions.
  • each downlink reference signal resource group is respectively configured or associated with a corresponding hop, wherein the multiple downlink reference signal resources included in each downlink reference signal resource group constitute all downlink reference signal ports.
  • one CSI-RS resource includes some CSI-RS ports, and multiple CSI-RS resources constitute all CSI-RS ports. For example, if the total number of CSI-RS ports is 128, the number of CSI-RS ports included in each CSI-RS resource is also 32, and 4 CSI-RS resources constitute all CSI-RS ports. Multiple CSI-RSs included in each CSI-RS group constitute the total number of CSI-RS ports. Each CSI-RS group is configured or associated with a corresponding hop.
  • At least one second downlink reference signal resource group among the different downlink reference signal resources has a second association relationship.
  • a plurality of second downlink reference signal resource groups having a second association relationship are linked downlink reference signal resource groups (linked resource groups).
  • the at least one second downlink reference signal resource group having the second association relationship is determined by at least one of the following methods:
  • Mode a sorting multiple downlink reference signal resource groups associated with the same hop in time, and determining the at least one second downlink reference signal resource group according to multiple downlink reference signal resource groups in the same time domain order.
  • multiple CSI-RS groups associated with the same hop ID are sorted by time; multiple CSI-RS groups in the same time domain order have a second association relationship.
  • each hop configures a CSI-RS resource group list, and the CSI-RS resource group corresponding to the same entry in the resource group lists corresponding to different hops has a second association relationship.
  • the terminal ignores or does not expect to configure ‘repetition’ and/or ‘trs-info’.
  • the network configures an identifier to identify that the downlink reference signal resources in the downlink reference signal resource set are used for ‘frequency hopping’.
  • TCI state A transmission configuration indication (TCI state) identifier corresponding to the downlink reference signal resource in the downlink reference signal resource set.
  • the downlink reference signal transmission method provided in the embodiment of the present application further includes:
  • the terminal reports the downlink reference signal resource ID and/or the downlink reference signal resource set ID corresponding to the CSI.
  • the terminal jointly processes the CSI-RS resources in the CSI-RS resource set, and reports the CSI, and reports the CSI, and reports the CSI-RS resource ID (CSI-RS resource ID) and/or CSI-RS resource set ID (CSI-RS resource set ID) associated with the CSI.
  • CSI-RS resource ID CSI-RS resource ID
  • CSI-RS resource set ID CSI-RS resource set ID
  • the terminal jointly processes CSI-RS resources with associated relationship and only reports one of the CSI-RS resource IDs to identify the CSI as the jointly processed CSI.
  • the terminal jointly processes the associated CSI-RS resources, reports the CSI-RS resource ID actually used, and identifies the CSI as the jointly processed CSI.
  • Solution 2 Different hops of the downlink reference signal are on downlink reference signal resources in different downlink reference signal resource sets.
  • different CSI-RS resources are CSI-RS resources in different CSI-RS resource sets, that is, multiple hops of CSI-RS are respectively configured or mapped in different CSI-RS resource sets. Different hops correspond to different CSI-RS resource sets.
  • each downlink reference signal resource set in the different downlink reference signal resource sets is respectively configured or associated with its own hop ID. Different CSI-RS resource sets represent different hops.
  • the number of CSI-RS resources in different CSI-RS resource sets is the same.
  • Figure 4 is a schematic diagram of different CSI-RS resource sets corresponding to different hops provided in an embodiment of the present application.
  • the network configures multiple CSI-RS resource sets in one CSI-RS resource configuration information (CSI-RS resource config), corresponding to different hops.
  • Multiple CSI-RS resource sets constitute a CSI-RS resource set list (CSI-RS resource set list) or a CSI-RS resource set group (CSI-RS resource set group) for hop.
  • Multiple CSI-RS resource sets for frequency hopping can be called linked CSI-RS resource sets (linked CSI-RS resource set).
  • a relationship between multiple downlink reference signal resources in each downlink reference signal resource set in the different downlink reference signal resource sets satisfies at least one of the following:
  • At least one third downlink reference signal resource in the different downlink reference signal resource sets has a third association relationship.
  • the at least one third downlink reference signal resource having the third association relationship is determined by at least one of the following methods:
  • Method a sort multiple downlink reference signal resources in a downlink reference signal resource set in time, and determine the at least one third downlink reference signal resource according to multiple downlink reference signal resources in the same time domain order in different downlink reference signal resource sets.
  • multiple CSI-RS resources in a CSI-RS resource set are sorted by time; multiple CSI-RS resources in the same time domain order have a third association relationship.
  • Mode b determining the at least one third downlink reference signal resource according to downlink reference signal resources of the same resource entry in different downlink reference signal resource sets.
  • CSI-RS resources corresponding to the same entry in a CSI-RS resource set have a third association relationship.
  • Mode c Determine the at least one third downlink reference signal resource using multiple downlink reference signal resources with the same resource identifier in different downlink reference signal resource sets.
  • multiple CSI-RS resources with the same resource identifier in a CSI-RS resource set have a third association relationship.
  • Mode d explicitly configure at least one third downlink reference signal resource having a third association relationship as a set.
  • the frequency domain density of the at least one third downlink reference signal resource is the same.
  • TCI state identifier corresponding to the downlink reference signal resource in the downlink reference signal resource set
  • the network includes multiple CSI-RS resource sets in one CSI-RS resource configuration information (CSI-RS resource config) for CSI-RS frequency hopping.
  • CSI-RS resource config CSI-RS resource configuration information
  • MAC CE is used to activate/deactivate CSI-RS frequency hopping.
  • reserved bit ‘1bit’ in MAC CE indicates that the MAC CE is used for CSI-RS frequency hopping.
  • the method of activating/deactivating CSI-RS frequency hopping using MAC CE may include at least one of the following:
  • the MAC CE contains at least one CSI-RS resource set for activation/deactivation;
  • the MAC CE includes a CSI-RS resource set for activation/deactivation.
  • a CSI-RS resource set By indicating a CSI-RS resource set, all CSI-RS resource sets used for frequency hopping are activated by default.
  • the network configuration 'indicator' enables the function of activating/deactivating CSI-RS frequency hopping; when 'indicator' is 1, the function is enabled; when 'indicator' is 0, the function is not enabled, that is, only one CSI-RS resource set indicated in the MAC CE is activated/deactivated.
  • the TCI states of multiple associated CSI-RS resources are represented by one TCI state ID.
  • TCI State ID 0 indicates the first CSI-RS resource in all activated CSI-RS resource sets.
  • the downlink reference signal resource set there are multiple identifiers of the downlink reference signal resource set, which correspond one-to-one to different downlink reference signal resource sets; or, there is one identifier of the downlink reference signal resource set, and the one downlink reference signal resource set identifier is used by the terminal to activate all downlink reference signal resource sets for frequency hopping.
  • the TCI state corresponds one-to-one to multiple downlink reference signal resources in a downlink reference signal resource set. That is, by indicating the TCI state of multiple downlink reference signal resources in a downlink reference signal resource set, the TCI state of the associated downlink reference signal resource in the associated downlink reference signal resource set can also be obtained.
  • the downlink reference signal transmission method provided in the embodiment of the present application further includes:
  • the terminal reports the downlink reference signal resource ID and/or the downlink reference signal resource set ID corresponding to the CSI.
  • the terminal jointly processes CSI-RS resources in multiple CSI-RS resource sets, and reports CSI, and reports the CSI-RS resource set ID and/or CSI-RS resource ID associated with the CSI.
  • the terminal only reports one CSI-RS resource set ID and/or CSI-RS resource ID to identify the CSI as jointly processed CSI.
  • the terminal jointly processes associated CSI-RS resources, reports the CSI-RS resource set ID and/or CSI-RS resource ID actually used, and identifies the CSI as jointly processed CSI.
  • FIG. 5 is a second flow chart of a method for transmitting a downlink reference signal provided in an embodiment of the present application. The method is applied to a network side device. As shown in FIG. 5 , the method includes steps 501 to 502:
  • Step 501 A network-side device sends a downlink reference signal to a terminal in a frequency hopping manner, where different hops of the downlink reference signal are mapped to different downlink reference signal resources.
  • the network side device sends a downlink reference signal to the terminal in a frequency hopping manner, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources.
  • the downlink reference signal is used for measuring channel state information, and the downlink reference signal is, for example, CSI-RS.
  • Step 502 The network side device receives channel state information CSI reported by the terminal, where the CSI is obtained by the terminal performing joint processing on the downlink reference signals on downlink reference signal resources corresponding to different hops.
  • the network side device sends CSI-RS to the terminal by frequency hopping, and different hops of CSI-RS (i.e., multiple hops of CSI-RS) are mapped or configured on different CSI-RS resources.
  • the terminal receives the CSI-RS sent by the network device by frequency hopping.
  • the terminal jointly processes the CSI-RS resources corresponding to different hops of CSI-RS to obtain CSI, and reports CSI to the network side device.
  • a network side device sends a downlink reference signal to a terminal by means of frequency hopping, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources.
  • the terminal After the terminal receives the downlink reference signal sent by the network side device by means of frequency hopping, the terminal jointly processes the downlink reference signal on the downlink reference signal resources corresponding to different hops, obtains CSI and reports it to the network side device, so that the terminal can process a large bandwidth downlink reference signal, and the channel state information reporting overhead is small.
  • different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources, including:
  • the different hops of the downlink reference signal are respectively on different downlink reference signal resources in the same downlink reference signal resource set.
  • different hops of the downlink reference signal correspond one-to-one to different downlink reference signal resources in the downlink reference signal resource set.
  • a relationship between different downlink reference signal resources in the same downlink reference signal resource set satisfies at least one of the following:
  • the different downlink reference signal resources are respectively configured with starting resource blocks RB and/or bandwidth;
  • the number of ports of the different downlink reference signal resources is the same, and the ports with the same port index of the different downlink reference signal resources are the same port;
  • the power control offsets of the different downlink reference signal resources are the same;
  • the quasi co-location QCLs of the different downlink reference signal resources are the same;
  • the frequency domain allocation parameters within the RB of the different downlink reference signal resources are the same;
  • the frequency domain densities of the different downlink reference signal resources are the same;
  • CDM code division multiplexing
  • each downlink reference signal resource in the different downlink reference signal resources is respectively configured or associated with a respective hop identification ID.
  • At least one target hop of the downlink reference signal is associated with more than two downlink reference signal resources in the downlink reference signal resource set.
  • each downlink reference signal resource in the downlink reference signal resource set is respectively configured with or associated with a corresponding hop.
  • multiple downlink reference signal resources associated with the same hop satisfy at least one of the following:
  • the starting physical resource block PRB is the same;
  • the number of RBs is the same;
  • the frequency domain density is the same;
  • the number of ports of downlink reference signal resources is the same;
  • the CDM type is the same;
  • the number of TCI states is the same as the number of downlink reference signal resources associated with a hop, and different TCI states correspond one-to-one to different downlink reference signal resources within a hop.
  • the relationship between multiple downlink reference signal resources in each downlink reference signal resource set in the different downlink reference signal resource sets satisfies at least one of the following: the same starting PRB; the same number of RBs; the same frequency domain density; the same number of downlink reference signal ports; and the same CDM type.
  • At least one third downlink reference signal resource having a third association relationship is explicitly configured as a set.
  • the third association relationship satisfies at least one of the following:
  • the at least one third downlink reference signal resource may be used for downlink reference signal resource joint processing to obtain CSI;
  • the at least one third downlink reference signal resource has the same number of ports, and the ports with the same port index are the same port;
  • the QCL of the at least one third downlink reference signal resource is the same;
  • the power control offset of the at least one third downlink reference signal resource is the same;
  • the at least one third downlink reference signal resource has the same frequency domain allocation parameter within the RB;
  • the frequency domain density of the at least one third downlink reference signal resource is the same;
  • the scrambling code ID of the at least one third downlink reference signal resource is the same;
  • the at least one third downlink reference signal resource has the same CDM type.
  • the method further comprises any of the following:
  • the network side device sends third indication information to the terminal, wherein the third indication information is used to trigger multiple downlink reference signal resource sets for downlink reference signal frequency hopping;
  • the network side device sends fourth indication information to the terminal, wherein the fourth indication information is used to activate or deactivate downlink reference signal frequency hopping.
  • the fourth indication information includes at least one of the following:
  • the TCI state identifier corresponding to the downlink reference signal resource in the downlink reference signal resource set is not limited.
  • the downlink reference signal resource set there are multiple identifiers of the downlink reference signal resource set, corresponding one-to-one to different downlink reference signal resource sets;
  • the number of the downlink reference signal resource set identifiers is one, and the one downlink reference signal resource set identifier is used by the terminal to activate all downlink reference signal resource sets for frequency hopping.
  • the TCI state corresponds one-to-one to multiple downlink reference signal resources in a downlink reference signal resource set.
  • the method further includes: the network side device receiving a downlink reference signal resource ID and/or a downlink reference signal resource set ID corresponding to the CSI reported by the terminal.
  • the network side device receives the CSI reported by the terminal, and the downlink reference signal resource ID and/or the downlink reference signal resource set ID corresponding to the CSI.
  • FIG. 6 is a flowchart of a method for transmitting a downlink reference signal according to an embodiment of the present application. The method is performed by a terminal and a network device in cooperation. As shown in FIG. 6 , the method includes steps 601 to 603:
  • Step 601 A network-side device sends a downlink reference signal to a terminal in a frequency hopping manner, where different hops of the downlink reference signal are mapped to different downlink reference signal resources.
  • Step 602 The terminal receives a downlink reference signal sent by a network-side device in a frequency hopping manner; the terminal jointly processes the downlink reference signals on downlink reference signal resources corresponding to different hops to obtain channel state information CSI.
  • Step 603 The terminal reports the CSI to the network side device; the network side device receives the CSI reported by the terminal.
  • a network side device sends a downlink reference signal to a terminal by means of frequency hopping, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources; after the terminal receives the downlink reference signal sent by the network side device by means of frequency hopping, the terminal jointly processes the downlink reference signal on the downlink reference signal resources corresponding to different hops, obtains CSI and reports it, so that the terminal can process a large bandwidth downlink reference signal, and the channel state information reporting overhead is small.
  • the downlink reference signal transmission method provided in the embodiment of the present application may be executed by a downlink reference signal transmission device.
  • the downlink reference signal transmission method performed by the downlink reference signal transmission device is taken as an example to illustrate the downlink reference signal transmission device provided in the embodiment of the present application.
  • FIG7 is a schematic diagram of a structure of a downlink reference signal transmission device provided in an embodiment of the present application.
  • a downlink reference signal transmission device 700 is applied to a terminal.
  • the downlink reference signal transmission device 700 includes: a first receiving module 701, a processing module 702 and a reporting module 703, wherein:
  • the processing module 702 is configured to jointly process the downlink reference signals on the downlink reference signal resources corresponding to different hops to obtain channel state information CSI;
  • the different downlink reference signal resources are respectively configured with starting resource blocks RB and/or bandwidth;
  • the third association relationship satisfies at least one of the following:
  • the frequency domain density of the at least one third downlink reference signal resource is the same;
  • the scrambling code ID of the at least one third downlink reference signal resource is the same;
  • the at least one third downlink reference signal resource has the same CDM type.
  • the first receiving module 701 is further used for any of the following:
  • the fourth indication information includes at least one of the following:
  • the TCI state identifier corresponding to the downlink reference signal resource in the downlink reference signal resource set is not limited.
  • the downlink reference signal resource set there are multiple identifiers of the downlink reference signal resource set, corresponding one-to-one to different downlink reference signal resource sets;
  • the TCI state corresponds one-to-one to multiple downlink reference signal resources in a downlink reference signal resource set.
  • the reporting module 703 is further configured to: in the process of reporting the CSI to the network side device, report the downlink reference signal resource ID and/or the downlink reference signal resource set ID corresponding to the CSI.
  • the downlink reference signal transmission device 700 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a terminal, or may be other devices other than a terminal.
  • the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.
  • the downlink reference signal transmission device 700 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 2 and achieve the same technical effect. To avoid repetition, it will not be described here.
  • FIG8 is a second structural diagram of a downlink reference signal transmission device provided in an embodiment of the present application.
  • the downlink reference signal transmission device 800 is applied to a network side device.
  • the downlink reference signal transmission device 800 includes: a sending module 801 and a second receiving module 802, wherein:
  • the sending module 801 is used to send a downlink reference signal to the terminal in a frequency hopping manner, where different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • a downlink reference signal is sent to a terminal by means of frequency hopping, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources.
  • the terminal After the terminal receives the downlink reference signal sent by a network side device by means of frequency hopping, the terminal jointly processes the downlink reference signal on the downlink reference signal resources corresponding to different hops, obtains CSI and reports it to the network side device, so that the terminal can process a large bandwidth downlink reference signal, and the channel state information reporting overhead is small.
  • different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources, including at least one of the following:
  • Different hops of the downlink reference signal are respectively on different downlink reference signal resources in the same downlink reference signal resource set;
  • Different hops of the downlink reference signal are respectively on downlink reference signal resources in different downlink reference signal resource sets.
  • different hops of the downlink reference signal correspond one-to-one to different downlink reference signal resources in the downlink reference signal resource set.
  • a relationship between different downlink reference signal resources in the same downlink reference signal resource set satisfies at least one of the following:
  • the different downlink reference signal resources are respectively configured with starting resource blocks RB and/or bandwidth;
  • the number of ports of the different downlink reference signal resources is the same, and the ports with the same port index of the different downlink reference signal resources are the same port;
  • the power control offsets of the different downlink reference signal resources are the same;
  • the quasi co-location QCLs of the different downlink reference signal resources are the same;
  • the frequency domain allocation parameters within the RB of the different downlink reference signal resources are the same;
  • the frequency domain densities of the different downlink reference signal resources are the same;
  • At least one second downlink reference signal resource group among the different downlink reference signal resources has a second association relationship, and the at least one second downlink reference signal resource group is determined by at least one of the following methods:
  • each downlink reference signal resource set in the different downlink reference signal resource sets is respectively configured or associated with its own hop ID.
  • At least one third downlink reference signal resource having a third association relationship is explicitly configured as a set.
  • the sending module 801 is further used for any of the following:
  • the terminal Sending third indication information to the terminal, wherein the third indication information is used to trigger multiple downlink reference signal resource sets for downlink reference signal frequency hopping;
  • the second receiving module 802 is further used to: receive a downlink reference signal resource ID and/or a downlink reference signal resource set ID corresponding to the CSI reported by the terminal.
  • the downlink reference signal transmission device 800 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a network side device, or may be a device other than the network side device.
  • the network side device may include but is not limited to the types of network side devices 12 listed above, and the embodiment of the present application does not specifically limit this.
  • the downlink reference signal transmission device 800 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • FIG9 is a schematic diagram of the structure of the communication device provided by the embodiment of the present application.
  • the embodiment of the present application also provides a communication device 900, including a processor 901 and a memory 902, and the memory 902 stores a program or instruction that can be run on the processor 901.
  • the communication device 900 is a terminal
  • the program or instruction is executed by the processor 901 to implement the various steps of the method embodiment shown in FIG2 above, and can achieve the same technical effect.
  • the communication device 900 is a network side device
  • the program or instruction is executed by the processor 901 to implement the various steps of the method embodiment shown in FIG5 above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiment shown in Figure 2.
  • This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.
  • the embodiment of the present application also provides a terminal
  • Figure 10 is a schematic diagram of the hardware structure of the terminal provided in the embodiment of the present application.
  • the terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and at least some of the components in the processor 1010.
  • the terminal 1000 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1010 through a power management system, so as to implement functions such as managing charging, discharging, and power consumption management through the power management system.
  • a power source such as a battery
  • the terminal structure shown in FIG10 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.
  • the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processing unit 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072.
  • the touch panel 10071 is also called a touch screen.
  • the touch panel 10071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
  • the RF unit 1001 can transmit the data to the processor 1010 for processing; in addition, the RF unit 1001 can send uplink data to the network side device.
  • the RF unit 1001 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • the memory 1009 can be used to store software programs or instructions and various data.
  • the memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the memory 1009 may include a volatile memory or a non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM).
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • DRRAM direct memory bus random access memory
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.
  • the radio frequency unit 1001 is used for the terminal to receive a downlink reference signal sent by a network side device in a frequency hopping manner, and different hops of the downlink reference signal are respectively mapped to different downlink reference signal resources;
  • the processor 1010 is configured to jointly process the downlink reference signals on the downlink reference signal resources corresponding to different hops to obtain channel state information CSI;
  • the radio frequency unit 1001 is further configured to report the CSI to the network side device.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method embodiment shown in Figure 5.
  • the network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the network side device embodiment, and can achieve the same technical effect.
  • FIG11 is a schematic diagram of the hardware structure of the network side device provided in the embodiment of the present application.
  • the network side device 1100 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114 and a memory 115.
  • the antenna 111 is connected to the radio frequency device 112.
  • the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing.
  • the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112.
  • the radio frequency device 112 processes the received information and sends it out through the antenna 111.
  • the baseband device 113 may include, for example, at least one baseband board, on which a plurality of chips are arranged, as shown in FIG11 , wherein one of the chips is, for example, a baseband processor, which is connected to the memory 115 through a bus interface to call a program in the memory 115 and execute the network device operations shown in the above method embodiment.

Landscapes

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

Abstract

La présente demande relève du domaine technique des communications sans fil. Un procédé de transmission de signal de référence de liaison descendante, un terminal et un dispositif côté réseau sont divulgués. Le procédé de transmission de signal de référence de liaison descendante décrit dans les modes de réalisation de la présente demande comprend les étapes suivantes : un terminal reçoit des signaux de référence de liaison descendante envoyés par un dispositif côté réseau au moyen d'un saut de fréquence, différents sauts des signaux de référence de liaison descendante étant respectivement mappés sur différentes ressources de signal de référence de liaison descendante ; le terminal effectue un traitement conjoint sur les signaux de référence de liaison descendante sur des ressources de signal de référence de liaison descendante correspondant respectivement à différents sauts de façon à obtenir des CS I; et le terminal rapporte les CSI au dispositif côté réseau.
PCT/CN2024/139798 2023-12-21 2024-12-17 Procédé de transmission de signal de référence de liaison descendante, terminal et dispositif côté réseau Pending WO2025130840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202311776953.2 2023-12-21
CN202311776953.2A CN120200632A (zh) 2023-12-21 2023-12-21 下行参考信号传输方法、终端及网络侧设备

Publications (1)

Publication Number Publication Date
WO2025130840A1 true WO2025130840A1 (fr) 2025-06-26

Family

ID=96061577

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/139798 Pending WO2025130840A1 (fr) 2023-12-21 2024-12-17 Procédé de transmission de signal de référence de liaison descendante, terminal et dispositif côté réseau

Country Status (2)

Country Link
CN (1) CN120200632A (fr)
WO (1) WO2025130840A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017008236A1 (fr) * 2015-07-14 2017-01-19 Nec Corporation Procédé et appareil de configuration et de détection de signal de référence
US20220247536A1 (en) * 2019-07-17 2022-08-04 Ntt Docomo, Inc. Terminal and radio communication method
CN114946126A (zh) * 2020-01-09 2022-08-26 高通股份有限公司 未许可频段中跳频的信道状态信息csi报告
EP4075834A1 (fr) * 2019-12-25 2022-10-19 Vivo Mobile Communication Co., Ltd. Procédé et terminal d'émission pour signal de référence de mesure de canal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017008236A1 (fr) * 2015-07-14 2017-01-19 Nec Corporation Procédé et appareil de configuration et de détection de signal de référence
US20220247536A1 (en) * 2019-07-17 2022-08-04 Ntt Docomo, Inc. Terminal and radio communication method
EP4075834A1 (fr) * 2019-12-25 2022-10-19 Vivo Mobile Communication Co., Ltd. Procédé et terminal d'émission pour signal de référence de mesure de canal
CN114946126A (zh) * 2020-01-09 2022-08-26 高通股份有限公司 未许可频段中跳频的信道状态信息csi报告

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
QUALCOMM INC.: "Beamformed CSI-RS for support of FD-MIMO", 3GPP DRAFT; R1-153880, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), 15 August 2015 (2015-08-15), XP050994363 *

Also Published As

Publication number Publication date
CN120200632A (zh) 2025-06-24

Similar Documents

Publication Publication Date Title
CN111034296B (zh) 用户装置以及基站装置
US20240080148A1 (en) Csi measurement resource processing method and apparatus, terminal, and readable storage medium
CN110741666A (zh) 用户终端
US20230126936A1 (en) Measurement indication method, terminal, and network-side device
WO2023025017A1 (fr) Procédé et appareil de traitement de transmission, et dispositif
US20250038814A1 (en) Resource Configuration Method and Device
JPWO2019064604A1 (ja) 基地局及びユーザ装置
WO2023051529A1 (fr) Procédé et appareil de traitement de signal de référence, terminal et support
WO2025067135A1 (fr) Procédé et appareil d'activation de cellule, dispositif électronique, et support
WO2025130840A1 (fr) Procédé de transmission de signal de référence de liaison descendante, terminal et dispositif côté réseau
WO2024114492A1 (fr) Procédé et appareil de mesure, terminal et dispositif côté réseau
WO2023078296A1 (fr) Procédé et appareil de détermination d'intervalle de temps disponible, et terminal
WO2025130842A1 (fr) Procédé et appareil de transmission de signal de référence de liaison descendante, terminal et dispositif côté réseau
US20250373388A1 (en) Method for obtaining channel state information, terminal, and network-side device
WO2024169823A1 (fr) Procédé et appareil de détermination d'une ressource de mesure et dispositif de communication
WO2020170457A1 (fr) Terminal et procédé de commande de communication sans fil
US20240040421A1 (en) Measurement Gap Pattern Configuration Method and Apparatus, Terminal, and Network-Side Device
CN120200631A (zh) 下行参考信号接收跳频方法、装置、终端及存储介质
WO2024208221A1 (fr) Procédé et appareil de transmission de rapport de csi, et terminal, dispositif côté réseau et support
WO2025036190A1 (fr) Procédé de détermination d'intervalle de mesure, terminal, dispositif côté réseau et support de stockage lisible
WO2025031306A1 (fr) Procédé et appareil de transmission, et terminal, dispositif côté réseau et support de stockage lisible
WO2024208294A1 (fr) Procédé de transmission en liaison montante, et terminal et dispositif côté réseau
WO2025130830A1 (fr) Procédé et appareil de détermination de motif de mappage, dispositif et support de stockage
WO2025113369A1 (fr) Procédé et appareil de d'activation de ressources, terminal et dispositif côté réseau
WO2024114490A1 (fr) Procédé et appareil de transmission de canal de liaison montante, et terminal et dispositif côté réseau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24906321

Country of ref document: EP

Kind code of ref document: A1